RPS-BLAST 2.2.26 [Sep-21-2011]
Database: CDD.v3.10
44,354 sequences; 10,937,602 total letters
Searching..................................................done
Query= psy7076
(290 letters)
>gnl|CDD|212773 cd11839, SH3_Intersectin_4, Fourth Src homology 3 domain (or SH3D)
of Intersectin. Intersectins (ITSNs) are adaptor
proteins that function in exo- and endocytosis, actin
cytoskeletal reorganization, and signal transduction.
They are essential for initiating clathrin-coated pit
formation. They bind to many proteins through their
multidomain structure and facilitate the assembly of
multimeric complexes. Vertebrates contain two ITSN
proteins, ITSN1 and ITSN2, which exist in alternatively
spliced short and long isoforms. The short isoforms
contain two Eps15 homology domains (EH1 and EH2), a
coiled-coil region and five SH3 domains (SH3A-E), while
the long isoforms, in addition, contain RhoGEF (also
called Dbl-homologous or DH), Pleckstrin homology (PH)
and C2 domains. ITSN1 and ITSN2 are both widely
expressed, with variations depending on tissue type and
stage of development. The fourth SH3 domain (or SH3D) of
ITSN1 has been shown to bind SHIP2, Numb, CdGAP, and
N-WASP. SH3 domains are protein interaction domains that
bind to proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 58
Score = 107 bits (268), Expect = 7e-30
Identities = 40/58 (68%), Positives = 53/58 (91%)
Query: 220 IATVLAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVKV 277
IA V+AP+TAT+ QLSL+ GQL+++RKK+ +GWWEGELQA+GKKRQ+GWFPA+YVK+
Sbjct: 1 IAQVIAPFTATAENQLSLAVGQLVLVRKKSPSGWWEGELQARGKKRQIGWFPANYVKL 58
Score = 44.3 bits (105), Expect = 1e-06
Identities = 18/57 (31%), Positives = 31/57 (54%), Gaps = 7/57 (12%)
Query: 42 RAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRG-----QTGWFPESYVE 93
+ I F + ++LS G +++ V++ + GW GEL+ Q GWFP +YV+
Sbjct: 3 QVIAPFTATAENQLSLAVGQLVL--VRKKSPSGWWEGELQARGKKRQIGWFPANYVK 57
Score = 36.5 bits (85), Expect = 0.001
Identities = 16/50 (32%), Positives = 25/50 (50%), Gaps = 6/50 (12%)
Query: 111 PYDSTEPGDLTFNQDEVIYVTKKE-NDWWTGTIGDR-----TGLFPSNYV 154
P+ +T L+ +++ V KK + WW G + R G FP+NYV
Sbjct: 7 PFTATAENQLSLAVGQLVLVRKKSPSGWWEGELQARGKKRQIGWFPANYV 56
>gnl|CDD|212770 cd11836, SH3_Intersectin_1, First Src homology 3 domain (or SH3A)
of Intersectin. Intersectins (ITSNs) are adaptor
proteins that function in exo- and endocytosis, actin
cytoskeletal reorganization, and signal transduction.
They are essential for initiating clathrin-coated pit
formation. They bind to many proteins through their
multidomain structure and facilitate the assembly of
multimeric complexes. Vertebrates contain two ITSN
proteins, ITSN1 and ITSN2, which exist in alternatively
spliced short and long isoforms. The short isoforms
contain two Eps15 homology domains (EH1 and EH2), a
coiled-coil region and five SH3 domains (SH3A-E), while
the long isoforms, in addition, contain RhoGEF (also
called Dbl-homologous or DH), Pleckstrin homology (PH)
and C2 domains. ITSN1 and ITSN2 are both widely
expressed, with variations depending on tissue type and
stage of development. The first SH3 domain (or SH3A) of
ITSN1 has been shown to bind many proteins including
Sos1, dynamin1/2, CIN85, c-Cbl, PI3K-C2, SHIP2, N-WASP,
and CdGAP, among others. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles
in the cell including the regulation of enzymes,
changing the subcellular localization of signaling
pathway components, and mediating the formation of
multiprotein complex assemblies.
Length = 55
Score = 101 bits (254), Expect = 9e-28
Identities = 38/54 (70%), Positives = 45/54 (83%)
Query: 40 RYRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVE 93
+YRA+Y F +RN DE+SFQPGDII V Q AEPGWLAGEL+G+TGWFP +YVE
Sbjct: 1 KYRALYAFEARNPDEISFQPGDIIQVDESQVAEPGWLAGELKGKTGWFPANYVE 54
Score = 44.7 bits (106), Expect = 9e-07
Identities = 17/53 (32%), Positives = 29/53 (54%), Gaps = 3/53 (5%)
Query: 105 YYIAAYPYDSTEPGDLTFNQDEVIYVTKK---ENDWWTGTIGDRTGLFPSNYV 154
Y A Y +++ P +++F ++I V + E W G + +TG FP+NYV
Sbjct: 1 KYRALYAFEARNPDEISFQPGDIIQVDESQVAEPGWLAGELKGKTGWFPANYV 53
Score = 39.6 bits (93), Expect = 6e-05
Identities = 18/55 (32%), Positives = 28/55 (50%), Gaps = 7/55 (12%)
Query: 223 VLAPYTATSSEQLSLSRGQLIMIRKKTT--TGWWEGELQAKGKKRQVGWFPASYV 275
L + A + +++S G +I + + GW GEL+ K GWFPA+YV
Sbjct: 4 ALYAFEARNPDEISFQPGDIIQVDESQVAEPGWLAGELKGK-----TGWFPANYV 53
>gnl|CDD|212926 cd11993, SH3_Intersectin1_4, Fourth Src homology 3 domain (or SH3D)
of Intersectin-1. Intersectin-1 (ITSN1) is an adaptor
protein that functions in exo- and endocytosis, actin
cytoskeletal reorganization, and signal transduction. It
plays a role in clathrin-coated pit (CCP) formation. It
binds to many proteins through its multidomain structure
and facilitate the assembly of multimeric complexes.
ITSN1 localizes in membranous organelles, CCPs, the
Golgi complex, and may be involved in the cell membrane
trafficking system. It exists in alternatively spliced
short and long isoforms. The short isoform contains two
Eps15 homology domains (EH1 and EH2), a coiled-coil
region and five SH3 domains (SH3A-E), while the long
isoform, in addition, contains RhoGEF (also called
Dbl-homologous or DH), Pleckstrin homology (PH) and C2
domains. The fourth SH3 domain (or SH3D) of ITSN1 has
been shown to bind SHIP2, Numb, CdGAP, and N-WASP. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 65
Score = 97.5 bits (242), Expect = 5e-26
Identities = 46/63 (73%), Positives = 55/63 (87%)
Query: 216 KKPEIATVLAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYV 275
KKPEIA V+A YTAT EQL+L+ GQLI+IRKK GWWEGELQA+GKKRQ+GWFPA+YV
Sbjct: 1 KKPEIAQVIASYTATGPEQLTLAPGQLILIRKKNPGGWWEGELQARGKKRQIGWFPANYV 60
Query: 276 KVM 278
K++
Sbjct: 61 KLL 63
Score = 31.6 bits (71), Expect = 0.051
Identities = 18/57 (31%), Positives = 30/57 (52%), Gaps = 7/57 (12%)
Query: 42 RAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRG-----QTGWFPESYVE 93
+ I + + ++L+ PG +I++ K GW GEL+ Q GWFP +YV+
Sbjct: 7 QVIASYTATGPEQLTLAPGQLILIRKKNPG--GWWEGELQARGKKRQIGWFPANYVK 61
Score = 30.5 bits (68), Expect = 0.14
Identities = 20/58 (34%), Positives = 26/58 (44%), Gaps = 6/58 (10%)
Query: 103 PEYYIAAYPYDSTEPGDLTFNQDEVIYVTKKE-NDWWTGTIGDR-----TGLFPSNYV 154
PE Y +T P LT ++I + KK WW G + R G FP+NYV
Sbjct: 3 PEIAQVIASYTATGPEQLTLAPGQLILIRKKNPGGWWEGELQARGKKRQIGWFPANYV 60
>gnl|CDD|212772 cd11838, SH3_Intersectin_3, Third Src homology 3 domain (or SH3C)
of Intersectin. Intersectins (ITSNs) are adaptor
proteins that function in exo- and endocytosis, actin
cytoskeletal reorganization, and signal transduction.
They are essential for initiating clathrin-coated pit
formation. They bind to many proteins through their
multidomain structure and facilitate the assembly of
multimeric complexes. Vertebrates contain two ITSN
proteins, ITSN1 and ITSN2, which exist in alternatively
spliced short and long isoforms. The short isoforms
contain two Eps15 homology domains (EH1 and EH2), a
coiled-coil region and five SH3 domains (SH3A-E), while
the long isoforms, in addition, contain RhoGEF (also
called Dbl-homologous or DH), Pleckstrin homology (PH)
and C2 domains. ITSN1 and ITSN2 are both widely
expressed, with variations depending on tissue type and
stage of development. The third SH3 domain (or SH3C) of
ITSN1 has been shown to bind many proteins including
dynamin1/2, CIN85, c-Cbl, SHIP2, Reps1, synaptojanin-1,
and WNK, among others. The SH3C of ITSN2 has been shown
to bind the K15 protein of Kaposi's sarcoma-associated
herpesvirus. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate affinity
and selectivity, preferentially to PxxP motifs. They
play versatile and diverse roles in the cell including
the regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 52
Score = 93.6 bits (233), Expect = 8e-25
Identities = 39/52 (75%), Positives = 44/52 (84%)
Query: 105 YYIAAYPYDSTEPGDLTFNQDEVIYVTKKENDWWTGTIGDRTGLFPSNYVVP 156
YIA YPY+S EPGDLTFN +VI VTKK+ +WWTGTIGDRTG+FPSNYV P
Sbjct: 1 EYIALYPYESNEPGDLTFNAGDVILVTKKDGEWWTGTIGDRTGIFPSNYVRP 52
Score = 37.8 bits (88), Expect = 3e-04
Identities = 21/55 (38%), Positives = 32/55 (58%), Gaps = 3/55 (5%)
Query: 40 RYRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVEP 94
Y A+Y + S +L+F GD+I+V K++ E W G + +TG FP +YV P
Sbjct: 1 EYIALYPYESNEPGDLTFNAGDVILV-TKKDGE--WWTGTIGDRTGIFPSNYVRP 52
Score = 30.8 bits (70), Expect = 0.074
Identities = 15/51 (29%), Positives = 26/51 (50%), Gaps = 6/51 (11%)
Query: 226 PYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVK 276
PY + L+ + G +I++ KK WW G + + G FP++YV+
Sbjct: 7 PYESNEPGDLTFNAGDVILVTKKDGE-WWTGTIGDR-----TGIFPSNYVR 51
>gnl|CDD|212927 cd11994, SH3_Intersectin2_4, Fourth Src homology 3 domain (or SH3D)
of Intersectin-2. Intersectin-2 (ITSN2) is an adaptor
protein that functions in exo- and endocytosis, actin
cytoskeletal reorganization, and signal transduction. It
plays a role in clathrin-coated pit (CCP) formation. It
binds to many proteins through its multidomain structure
and facilitate the assembly of multimeric complexes.
ITSN2 also functions as a specific GEF for Cdc42
activation in epithelial morphogenesis, and is required
in mitotic spindle orientation. It exists in
alternatively spliced short and long isoforms. The short
isoform contains two Eps15 homology domains (EH1 and
EH2), a coiled-coil region and five SH3 domains
(SH3A-E), while the long isoform, in addition, contains
RhoGEF (also called Dbl-homologous or DH), Pleckstrin
homology (PH) and C2 domains. The fourth SH3 domain (or
SH3D) of ITSN2 is expected to bind protein partners,
similar to ITSN1 which has been shown to bind SHIP2,
Numb, CdGAP, and N-WASP. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 59
Score = 88.1 bits (218), Expect = 1e-22
Identities = 39/59 (66%), Positives = 47/59 (79%)
Query: 220 IATVLAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVKVM 278
IA V Y A+ EQLSLS GQLI+I KK ++GWW GELQA+GKKRQ GWFPAS+VK++
Sbjct: 1 IAQVTTAYVASGVEQLSLSPGQLILILKKNSSGWWLGELQARGKKRQKGWFPASHVKLL 59
Score = 34.5 bits (79), Expect = 0.005
Identities = 21/46 (45%), Positives = 31/46 (67%), Gaps = 7/46 (15%)
Query: 53 DELSFQPGDIIMVPVKQNAEPGWLAGEL--RG---QTGWFPESYVE 93
++LS PG +I++ +K+N+ GW GEL RG Q GWFP S+V+
Sbjct: 14 EQLSLSPGQLILI-LKKNSS-GWWLGELQARGKKRQKGWFPASHVK 57
>gnl|CDD|212925 cd11992, SH3_Intersectin2_3, Third Src homology 3 domain (or SH3C)
of Intersectin-2. Intersectin-2 (ITSN2) is an adaptor
protein that functions in exo- and endocytosis, actin
cytoskeletal reorganization, and signal transduction. It
plays a role in clathrin-coated pit (CCP) formation. It
binds to many proteins through its multidomain structure
and facilitate the assembly of multimeric complexes.
ITSN2 also functions as a specific GEF for Cdc42
activation in epithelial morphogenesis, and is required
in mitotic spindle orientation. It exists in
alternatively spliced short and long isoforms. The short
isoform contains two Eps15 homology domains (EH1 and
EH2), a coiled-coil region and five SH3 domains
(SH3A-E), while the long isoform, in addition, contains
RhoGEF (also called Dbl-homologous or DH), Pleckstrin
homology (PH) and C2 domains. The third SH3 domain
(SH3C) of ITSN2 has been shown to bind the K15 protein
of Kaposi's sarcoma-associated herpesvirus. SH3 domains
are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 52
Score = 79.7 bits (196), Expect = 2e-19
Identities = 36/51 (70%), Positives = 43/51 (84%)
Query: 106 YIAAYPYDSTEPGDLTFNQDEVIYVTKKENDWWTGTIGDRTGLFPSNYVVP 156
YIA YPY S+EPGDLTFN+ E I VT+K+ +WWTG+I DRTG+FPSNYV P
Sbjct: 2 YIALYPYSSSEPGDLTFNEGEEILVTQKDGEWWTGSIEDRTGIFPSNYVRP 52
Score = 33.8 bits (77), Expect = 0.008
Identities = 19/54 (35%), Positives = 28/54 (51%), Gaps = 3/54 (5%)
Query: 41 YRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVEP 94
Y A+Y + S +L+F G+ I+V K W G + +TG FP +YV P
Sbjct: 2 YIALYPYSSSEPGDLTFNEGEEILVTQKDGE---WWTGSIEDRTGIFPSNYVRP 52
>gnl|CDD|212924 cd11991, SH3_Intersectin1_3, Third Src homology 3 domain (or SH3C)
of Intersectin-1. Intersectin-1 (ITSN1) is an adaptor
protein that functions in exo- and endocytosis, actin
cytoskeletal reorganization, and signal transduction. It
plays a role in clathrin-coated pit (CCP) formation. It
binds to many proteins through its multidomain structure
and facilitate the assembly of multimeric complexes.
ITSN1 localizes in membranous organelles, CCPs, the
Golgi complex, and may be involved in the cell membrane
trafficking system. It exists in alternatively spliced
short and long isoforms. The short isoform contains two
Eps15 homology domains (EH1 and EH2), a coiled-coil
region and five SH3 domains (SH3A-E), while the long
isoform, in addition, contains RhoGEF (also called
Dbl-homologous or DH), Pleckstrin homology (PH) and C2
domains. The third SH3 domain (or SH3C) of ITSN1 has
been shown to bind many proteins including dynamin1/2,
CIN85, c-Cbl, SHIP2, Reps1, synaptojanin-1, and WNK,
among others. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP motifs.
They play versatile and diverse roles in the cell
including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 52
Score = 78.1 bits (192), Expect = 7e-19
Identities = 35/51 (68%), Positives = 42/51 (82%)
Query: 106 YIAAYPYDSTEPGDLTFNQDEVIYVTKKENDWWTGTIGDRTGLFPSNYVVP 156
Y+A Y Y+S E GDLTF Q +VI VTKK+ DWWTGT+GD+TG+FPSNYV P
Sbjct: 2 YVAMYTYESNEQGDLTFQQGDVILVTKKDGDWWTGTVGDKTGVFPSNYVRP 52
Score = 38.8 bits (90), Expect = 1e-04
Identities = 21/54 (38%), Positives = 31/54 (57%), Gaps = 3/54 (5%)
Query: 41 YRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVEP 94
Y A+Y + S +L+FQ GD+I+V K + W G + +TG FP +YV P
Sbjct: 2 YVAMYTYESNEQGDLTFQQGDVILVTKK---DGDWWTGTVGDKTGVFPSNYVRP 52
>gnl|CDD|212921 cd11988, SH3_Intersectin2_1, First Src homology 3 domain (or
SH3A) of Intersectin-2. Intersectin-2 (ITSN2) is an
adaptor protein that functions in exo- and endocytosis,
actin cytoskeletal reorganization, and signal
transduction. It plays a role in clathrin-coated pit
(CCP) formation. It binds to many proteins through its
multidomain structure and facilitate the assembly of
multimeric complexes. ITSN2 also functions as a
specific GEF for Cdc42 activation in epithelial
morphogenesis, and is required in mitotic spindle
orientation. It exists in alternatively spliced short
and long isoforms. The short isoform contains two Eps15
homology domains (EH1 and EH2), a coiled-coil region
and five SH3 domains (SH3A-E), while the long isoform,
in addition, contains RhoGEF (also called
Dbl-homologous or DH), Pleckstrin homology (PH) and C2
domains. The first SH3 domain (or SH3A) of ITSN2 is
expected to bind many protein partners, similar to
ITSN1 which has been shown to bind Sos1, dynamin1/2,
CIN85, c-Cbl, PI3K-C2, SHIP2, N-WASP, and CdGAP, among
others. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP
motifs. They play versatile and diverse roles in the
cell including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 57
Score = 74.1 bits (182), Expect = 2e-17
Identities = 31/53 (58%), Positives = 36/53 (67%)
Query: 41 YRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVE 93
YRA+Y F +RN DE+SF GDII V K EPGWL G +G GWFP +YVE
Sbjct: 4 YRALYPFEARNHDEMSFNAGDIIQVDEKTVGEPGWLYGSFQGNFGWFPCNYVE 56
Score = 38.7 bits (90), Expect = 2e-04
Identities = 18/57 (31%), Positives = 29/57 (50%), Gaps = 7/57 (12%)
Query: 222 TVLAPYTATSSEQLSLSRGQLIMIRKKTT--TGWWEGELQAKGKKRQVGWFPASYVK 276
L P+ A + +++S + G +I + +KT GW G Q GWFP +YV+
Sbjct: 5 RALYPFEARNHDEMSFNAGDIIQVDEKTVGEPGWLYGSFQG-----NFGWFPCNYVE 56
Score = 36.8 bits (85), Expect = 8e-04
Identities = 18/52 (34%), Positives = 28/52 (53%), Gaps = 3/52 (5%)
Query: 106 YIAAYPYDSTEPGDLTFNQDEVIYVTKK---ENDWWTGTIGDRTGLFPSNYV 154
Y A YP+++ +++FN ++I V +K E W G+ G FP NYV
Sbjct: 4 YRALYPFEARNHDEMSFNAGDIIQVDEKTVGEPGWLYGSFQGNFGWFPCNYV 55
>gnl|CDD|212920 cd11987, SH3_Intersectin1_1, First Src homology 3 domain (or
SH3A) of Intersectin-1. Intersectin-1 (ITSN1) is an
adaptor protein that functions in exo- and endocytosis,
actin cytoskeletal reorganization, and signal
transduction. It plays a role in clathrin-coated pit
(CCP) formation. It binds to many proteins through its
multidomain structure and facilitate the assembly of
multimeric complexes. ITSN1 localizes in membranous
organelles, CCPs, the Golgi complex, and may be
involved in the cell membrane trafficking system. It
exists in alternatively spliced short and long
isoforms. The short isoform contains two Eps15 homology
domains (EH1 and EH2), a coiled-coil region and five
SH3 domains (SH3A-E), while the long isoform, in
addition, contains RhoGEF (also called Dbl-homologous
or DH), Pleckstrin homology (PH) and C2 domains. The
first SH3 domain (or SH3A) of ITSN1 has been shown to
bind many proteins including Sos1, dynamin1/2, CIN85,
c-Cbl, PI3K-C2, SHIP2, N-WASP, and CdGAP, among others.
SH3 domains are protein interaction domains that bind
to proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 55
Score = 73.9 bits (181), Expect = 3e-17
Identities = 32/53 (60%), Positives = 41/53 (77%)
Query: 41 YRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVE 93
YRA+Y F +R+ DE++ QPGDI+MV Q EPGWL GEL+G+TGWFP +Y E
Sbjct: 2 YRALYPFEARSHDEITIQPGDIVMVDESQTGEPGWLGGELKGKTGWFPANYAE 54
Score = 35.4 bits (81), Expect = 0.002
Identities = 19/55 (34%), Positives = 32/55 (58%), Gaps = 7/55 (12%)
Query: 224 LAPYTATSSEQLSLSRGQLIMIRKKTT--TGWWEGELQAKGKKRQVGWFPASYVK 276
L P+ A S +++++ G ++M+ + T GW GEL+ K GWFPA+Y +
Sbjct: 5 LYPFEARSHDEITIQPGDIVMVDESQTGEPGWLGGELKGK-----TGWFPANYAE 54
Score = 34.2 bits (78), Expect = 0.006
Identities = 16/52 (30%), Positives = 28/52 (53%), Gaps = 3/52 (5%)
Query: 105 YYIAAYPYDSTEPGDLTFNQDEVIYVTKK---ENDWWTGTIGDRTGLFPSNY 153
YY A YP+++ ++T +++ V + E W G + +TG FP+NY
Sbjct: 1 YYRALYPFEARSHDEITIQPGDIVMVDESQTGEPGWLGGELKGKTGWFPANY 52
>gnl|CDD|214620 smart00326, SH3, Src homology 3 domains. Src homology 3 (SH3)
domains bind to target proteins through sequences
containing proline and hydrophobic amino acids.
Pro-containing polypeptides may bind to SH3 domains in
2 different binding orientations.
Length = 56
Score = 69.1 bits (170), Expect = 1e-15
Identities = 26/58 (44%), Positives = 41/58 (70%), Gaps = 3/58 (5%)
Query: 37 EYRRYRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGEL-RGQTGWFPESYVE 93
E + RA+Y++ +++ DELSF+ GDII V ++++ + GW G L RG+ G FP +YVE
Sbjct: 1 EGPQVRALYDYTAQDPDELSFKKGDIITV-LEKS-DDGWWKGRLGRGKEGLFPSNYVE 56
Score = 68.3 bits (168), Expect = 3e-15
Identities = 22/55 (40%), Positives = 33/55 (60%), Gaps = 2/55 (3%)
Query: 102 VPEYYIAAYPYDSTEPGDLTFNQDEVIYVTKKEND-WWTGTIGD-RTGLFPSNYV 154
A Y Y + +P +L+F + ++I V +K +D WW G +G + GLFPSNYV
Sbjct: 1 EGPQVRALYDYTAQDPDELSFKKGDIITVLEKSDDGWWKGRLGRGKEGLFPSNYV 55
Score = 61.4 bits (150), Expect = 9e-13
Identities = 19/60 (31%), Positives = 33/60 (55%), Gaps = 4/60 (6%)
Query: 217 KPEIATVLAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVK 276
+ L YTA ++LS +G +I + +K+ GWW+G L + + G FP++YV+
Sbjct: 1 EGPQVRALYDYTAQDPDELSFKKGDIITVLEKSDDGWWKGRL----GRGKEGLFPSNYVE 56
>gnl|CDD|212690 cd00174, SH3, Src Homology 3 domain superfamily. Src Homology 3
(SH3) domains are protein interaction domains that bind
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. Thus, they
are referred to as proline-recognition domains (PRDs).
SH3 domains are less selective and show more diverse
specificity compared to other PRDs. They have been shown
to bind peptide sequences that lack the PxxP motif;
examples include the PxxDY motif of Eps8 and the
RKxxYxxY sequence in SKAP55. SH3 domain containing
proteins play versatile and diverse roles in the cell,
including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies, among others. Many members of this
superfamily are adaptor proteins that associate with a
number of protein partners, facilitating complex
formation and signal transduction.
Length = 51
Score = 66.3 bits (163), Expect = 1e-14
Identities = 20/51 (39%), Positives = 33/51 (64%), Gaps = 2/51 (3%)
Query: 105 YYIAAYPYDSTEPGDLTFNQDEVIYVTKKEND-WWTGTIGD-RTGLFPSNY 153
Y A Y Y++ + +L+F + ++I V +K++D WW G + R GLFP+NY
Sbjct: 1 YARALYDYEAQDDDELSFKKGDIITVLEKDDDGWWEGELNGGREGLFPANY 51
Score = 59.4 bits (145), Expect = 4e-12
Identities = 23/53 (43%), Positives = 34/53 (64%), Gaps = 3/53 (5%)
Query: 40 RYRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGEL-RGQTGWFPESY 91
RA+Y++ +++ DELSF+ GDII V + + GW GEL G+ G FP +Y
Sbjct: 1 YARALYDYEAQDDDELSFKKGDIIT--VLEKDDDGWWEGELNGGREGLFPANY 51
Score = 59.0 bits (144), Expect = 7e-12
Identities = 21/55 (38%), Positives = 29/55 (52%), Gaps = 4/55 (7%)
Query: 220 IATVLAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASY 274
A L Y A ++LS +G +I + +K GWWEGEL + G FPA+Y
Sbjct: 1 YARALYDYEAQDDDELSFKKGDIITVLEKDDDGWWEGELN----GGREGLFPANY 51
>gnl|CDD|212776 cd11842, SH3_Ysc84p_like, Src homology 3 domain of Ysc84p and
similar fungal proteins. This family is composed of the
Saccharomyces cerevisiae proteins, Ysc84p (also called
LAS17-binding protein 4, Lsb4p) and Lsb3p, and similar
fungal proteins. They contain an N-terminal SYLF domain
(also called DUF500) and a C-terminal SH3 domain. Ysc84p
localizes to actin patches and plays an important in
actin polymerization during endocytosis. The N-terminal
domain of both Ysc84p and Lsb3p can bind and bundle
actin filaments. A study of the yeast SH3 domain
interactome predicts that the SH3 domains of Lsb3p and
Lsb4p may function as molecular hubs for the assembly of
endocytic complexes. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP motifs.
They play versatile and diverse roles in the cell
including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 55
Score = 65.5 bits (160), Expect = 3e-14
Identities = 25/53 (47%), Positives = 35/53 (66%), Gaps = 3/53 (5%)
Query: 105 YYIAAYPYDSTEPGDLTFNQDEVIYVTKK---ENDWWTGTIGDRTGLFPSNYV 154
+A Y + +PGDL F + ++I + KK +NDWWTG IG R G+FP+NYV
Sbjct: 1 KAVALYDFAGEQPGDLAFQKGDIITILKKSDSQNDWWTGRIGGREGIFPANYV 53
Score = 43.2 bits (102), Expect = 4e-06
Identities = 20/52 (38%), Positives = 31/52 (59%)
Query: 42 RAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVE 93
A+Y+F +L+FQ GDII + K +++ W G + G+ G FP +YVE
Sbjct: 3 VALYDFAGEQPGDLAFQKGDIITILKKSDSQNDWWTGRIGGREGIFPANYVE 54
Score = 36.6 bits (85), Expect = 8e-04
Identities = 17/59 (28%), Positives = 28/59 (47%), Gaps = 7/59 (11%)
Query: 221 ATVLAPYTATSSEQLSLSRGQLIMIRKKTTTG--WWEGELQAKGKKRQVGWFPASYVKV 277
A L + L+ +G +I I KK+ + WW G + + G FPA+YV++
Sbjct: 2 AVALYDFAGEQPGDLAFQKGDIITILKKSDSQNDWWTGRIGGR-----EGIFPANYVEL 55
>gnl|CDD|212757 cd11823, SH3_Nostrin, Src homology 3 domain of Nitric Oxide
Synthase TRaffic INducer. Nostrin is expressed in
endothelial and epithelial cells and is involved in the
regulation, trafficking and targeting of endothelial
NOS (eNOS). It facilitates the endocytosis of eNOS by
coordinating the functions of dynamin and the
Wiskott-Aldrich syndrome protein (WASP). Increased
expression of Nostrin may be correlated to
preeclampsia. Nostrin contains an N-terminal F-BAR
domain and a C-terminal SH3 domain. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 53
Score = 62.7 bits (153), Expect = 3e-13
Identities = 28/54 (51%), Positives = 35/54 (64%), Gaps = 2/54 (3%)
Query: 40 RYRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVE 93
R +A+Y + + DELS QPGDII V KQ + GW GEL G+ G FP +YVE
Sbjct: 1 RCKALYSYTANREDELSLQPGDIIEVHEKQ--DDGWWLGELNGKKGIFPATYVE 52
Score = 50.0 bits (120), Expect = 1e-08
Identities = 22/56 (39%), Positives = 30/56 (53%), Gaps = 5/56 (8%)
Query: 222 TVLAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVKV 277
L YTA ++LSL G +I + +K GWW GEL + G FPA+YV+
Sbjct: 3 KALYSYTANREDELSLQPGDIIEVHEKQDDGWWLGEL-----NGKKGIFPATYVEE 53
Score = 48.1 bits (115), Expect = 6e-08
Identities = 15/48 (31%), Positives = 27/48 (56%), Gaps = 1/48 (2%)
Query: 108 AAYPYDSTEPGDLTFNQDEVIYVT-KKENDWWTGTIGDRTGLFPSNYV 154
A Y Y + +L+ ++I V K+++ WW G + + G+FP+ YV
Sbjct: 4 ALYSYTANREDELSLQPGDIIEVHEKQDDGWWLGELNGKKGIFPATYV 51
>gnl|CDD|212815 cd11882, SH3_GRAF-like, Src Homology 3 domain of GTPase Regulator
Associated with Focal adhesion kinase and similar
proteins. This subfamily is composed of Rho GTPase
activating proteins (GAPs) with similarity to GRAF.
Members contain an N-terminal BAR domain, followed by a
Pleckstrin homology (PH) domain, a Rho GAP domain, and
a C-terminal SH3 domain. Although vertebrates harbor
four Rho GAPs in the GRAF subfamily including GRAF,
GRAF2, GRAF3, and Oligophrenin-1 (OPHN1), only three
are included in this model. OPHN1 contains the BAR, PH
and GAP domains, but not the C-terminal SH3 domain.
GRAF and GRAF2 show GAP activity towards RhoA and
Cdc42. GRAF influences Rho-mediated cytoskeletal
rearrangements and binds focal adhesion kinase. GRAF2
regulates caspase-activated p21-activated protein
kinase-2. The SH3 domain of GRAF and GRAF2 binds
PKNbeta, a target of the small GTPase Rho. SH3 domains
bind to proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs; they play a
role in the regulation of enzymes by intramolecular
interactions, changing the subcellular localization of
signal pathway components and mediate multiprotein
complex assemblies.
Length = 54
Score = 62.3 bits (152), Expect = 5e-13
Identities = 28/55 (50%), Positives = 36/55 (65%), Gaps = 1/55 (1%)
Query: 40 RYRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVEP 94
R RA+Y + + ELSF+PG II V+ + EPGWL G L G+TG PE+YVE
Sbjct: 1 RARALYACKAEDESELSFEPGQII-TNVQPSDEPGWLEGTLNGRTGLIPENYVEF 54
Score = 47.3 bits (113), Expect = 1e-07
Identities = 17/51 (33%), Positives = 24/51 (47%), Gaps = 2/51 (3%)
Query: 108 AAYPYDSTEPGDLTFNQDEVIY--VTKKENDWWTGTIGDRTGLFPSNYVVP 156
A Y + + +L+F ++I E W GT+ RTGL P NYV
Sbjct: 4 ALYACKAEDESELSFEPGQIITNVQPSDEPGWLEGTLNGRTGLIPENYVEF 54
>gnl|CDD|212706 cd11772, SH3_OSTF1, Src Homology 3 domain of metazoan osteoclast
stimulating factor 1. OSTF1, also named OSF or SH3P2,
is a signaling protein containing SH3 and ankyrin-repeat
domains. It acts through a Src-related pathway to
enhance the formation of osteoclasts and bone
resorption. It also acts as a negative regulator of cell
motility. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate affinity
and selectivity, preferentially to PxxP motifs. They
play versatile and diverse roles in the cell including
the regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 53
Score = 61.9 bits (151), Expect = 5e-13
Identities = 20/52 (38%), Positives = 34/52 (65%), Gaps = 1/52 (1%)
Query: 106 YIAAYPYDSTEPGDLTFNQDEVIYVT-KKENDWWTGTIGDRTGLFPSNYVVP 156
+ A Y Y++ P +L+F + +++Y++ K + +WW T G +TGL PSNYV
Sbjct: 2 FRALYDYEAQHPDELSFEEGDLLYISDKSDPNWWKATCGGKTGLIPSNYVEE 53
Score = 52.7 bits (127), Expect = 1e-09
Identities = 20/54 (37%), Positives = 34/54 (62%), Gaps = 2/54 (3%)
Query: 41 YRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVEP 94
+RA+Y++ +++ DELSF+ GD++ + K + P W G+TG P +YVE
Sbjct: 2 FRALYDYEAQHPDELSFEEGDLLYISDKSD--PNWWKATCGGKTGLIPSNYVEE 53
Score = 37.3 bits (87), Expect = 4e-04
Identities = 15/52 (28%), Positives = 23/52 (44%), Gaps = 5/52 (9%)
Query: 224 LAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYV 275
L Y A ++LS G L+ I K+ WW+ + G P++YV
Sbjct: 5 LYDYEAQHPDELSFEEGDLLYISDKSDPNWWKATC-----GGKTGLIPSNYV 51
>gnl|CDD|212739 cd11805, SH3_GRB2_like_C, C-terminal Src homology 3 domain of
Growth factor receptor-bound protein 2 (GRB2) and
related proteins. This family includes the adaptor
protein GRB2 and related proteins including Drosophila
melanogaster Downstream of receptor kinase (DRK),
Caenorhabditis elegans Sex muscle abnormal protein 5
(Sem-5), GRB2-related adaptor protein (GRAP), GRAP2, and
similar proteins. Family members contain an N-terminal
SH3 domain, a central SH2 domain, and a C-terminal SH3
domain. GRB2/Sem-5/DRK is a critical signaling molecule
that regulates the Ras pathway by linking tyrosine
kinases to the Ras guanine nucleotide releasing protein
Sos (son of sevenless), which converts Ras to the active
GTP-bound state. GRAP2 plays an important role in T cell
receptor (TCR) signaling by promoting the formation of
the SLP-76:LAT complex, which couples the TCR to the Ras
pathway. GRAP acts as a negative regulator of T cell
receptor (TCR)-induced lymphocyte proliferation by
downregulating the signaling to the Ras/ERK pathway. The
C-terminal SH3 domains (SH3c) of GRB2 and GRAP2 have
been shown to bind to classical PxxP motif ligands, as
well as to non-classical motifs. GRB2 SH3c binds Gab2
(Grb2-associated binder 2) through epitopes containing
RxxK motifs, while the SH3c of GRAP2 binds to the
phosphatase-like protein HD-PTP via a RxxxxK motif. SH3
domains are protein interaction domains that typically
bind to proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 53
Score = 61.5 bits (150), Expect = 7e-13
Identities = 21/50 (42%), Positives = 31/50 (62%), Gaps = 1/50 (2%)
Query: 108 AAYPYDSTEPGDLTFNQDEVIYVTKKEN-DWWTGTIGDRTGLFPSNYVVP 156
A Y ++ EPG+L F + ++I V + DWW G + R G+FP+NYV P
Sbjct: 4 ALYDFNPQEPGELEFRRGDIITVLDSSDPDWWKGELRGRVGIFPANYVQP 53
Score = 53.8 bits (130), Expect = 5e-10
Identities = 25/55 (45%), Positives = 36/55 (65%), Gaps = 2/55 (3%)
Query: 40 RYRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVEP 94
R +A+Y+F + EL F+ GDII V +++P W GELRG+ G FP +YV+P
Sbjct: 1 RVQALYDFNPQEPGELEFRRGDIITV--LDSSDPDWWKGELRGRVGIFPANYVQP 53
Score = 40.3 bits (95), Expect = 4e-05
Identities = 16/51 (31%), Positives = 26/51 (50%), Gaps = 5/51 (9%)
Query: 227 YTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVKV 277
+ +L RG +I + + WW+GEL + +VG FPA+YV+
Sbjct: 8 FNPQEPGELEFRRGDIITVLDSSDPDWWKGEL-----RGRVGIFPANYVQP 53
>gnl|CDD|212774 cd11840, SH3_Intersectin_5, Fifth Src homology 3 domain (or SH3E)
of Intersectin. Intersectins (ITSNs) are adaptor
proteins that function in exo- and endocytosis, actin
cytoskeletal reorganization, and signal transduction.
They are essential for initiating clathrin-coated pit
formation. They bind to many proteins through their
multidomain structure and facilitate the assembly of
multimeric complexes. Vertebrates contain two ITSN
proteins, ITSN1 and ITSN2, which exist in alternatively
spliced short and long isoforms. The short isoforms
contain two Eps15 homology domains (EH1 and EH2), a
coiled-coil region and five SH3 domains (SH3A-E), while
the long isoforms, in addition, contain RhoGEF (also
called Dbl-homologous or DH), Pleckstrin homology (PH)
and C2 domains. ITSN1 and ITSN2 are both widely
expressed, with variations depending on tissue type and
stage of development. The fifth SH3 domain (or SH3E) of
ITSN1 has been shown to bind many protein partners
including SGIP1, Sos1, dynamin1/2, CIN85, c-Cbl, SHIP2,
N-WASP, and synaptojanin-1, among others. SH3 domains
are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 53
Score = 61.7 bits (150), Expect = 8e-13
Identities = 29/53 (54%), Positives = 36/53 (67%), Gaps = 2/53 (3%)
Query: 42 RAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVEP 94
A++ + ++N DELSFQ GDII V K +P W GEL GQTG FP +YVEP
Sbjct: 3 IALFPYTAQNEDELSFQKGDIINVLSKD--DPDWWRGELNGQTGLFPSNYVEP 53
Score = 57.0 bits (138), Expect = 3e-11
Identities = 23/51 (45%), Positives = 34/51 (66%), Gaps = 1/51 (1%)
Query: 107 IAAYPYDSTEPGDLTFNQDEVIYVTKKEN-DWWTGTIGDRTGLFPSNYVVP 156
IA +PY + +L+F + ++I V K++ DWW G + +TGLFPSNYV P
Sbjct: 3 IALFPYTAQNEDELSFQKGDIINVLSKDDPDWWRGELNGQTGLFPSNYVEP 53
Score = 45.5 bits (108), Expect = 4e-07
Identities = 21/54 (38%), Positives = 30/54 (55%), Gaps = 5/54 (9%)
Query: 224 LAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVKV 277
L PYTA + ++LS +G +I + K WW GEL Q G FP++YV+
Sbjct: 5 LFPYTAQNEDELSFQKGDIINVLSKDDPDWWRGELNG-----QTGLFPSNYVEP 53
>gnl|CDD|212775 cd11841, SH3_SH3YL1_like, Src homology 3 domain of SH3 domain
containing Ysc84-like 1 (SH3YL1) protein. SH3YL1
localizes to the plasma membrane and is required for
dorsal ruffle formation. It binds phosphoinositides
(PIs) with high affinity through its N-terminal SYLF
domain (also called DUF500). In addition, SH3YL1
contains a C-terminal SH3 domain which has been reported
to bind to N-WASP, dynamin 2, and SHIP2 (a PI
5-phosphatase). SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP motifs.
They play versatile and diverse roles in the cell
including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 54
Score = 61.3 bits (149), Expect = 1e-12
Identities = 20/50 (40%), Positives = 29/50 (58%), Gaps = 3/50 (6%)
Query: 108 AAYPYDSTEPGDLTFNQDEVIYV---TKKENDWWTGTIGDRTGLFPSNYV 154
A Y ++ +P DL+F + I V T + DWW G + R G+FP+NYV
Sbjct: 4 ALYSFEGQQPCDLSFQAGDRITVLTRTDSQFDWWEGRLRGRVGIFPANYV 53
Score = 43.9 bits (104), Expect = 2e-06
Identities = 21/50 (42%), Positives = 30/50 (60%)
Query: 43 AIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYV 92
A+Y F + +LSFQ GD I V + +++ W G LRG+ G FP +YV
Sbjct: 4 ALYSFEGQQPCDLSFQAGDRITVLTRTDSQFDWWEGRLRGRVGIFPANYV 53
Score = 41.2 bits (97), Expect = 1e-05
Identities = 19/59 (32%), Positives = 26/59 (44%), Gaps = 7/59 (11%)
Query: 220 IATVLAPYTATSSEQLSLSRGQLIMIRKKTTT--GWWEGELQAKGKKRQVGWFPASYVK 276
T L + LS G I + +T + WWEG L + +VG FPA+YV
Sbjct: 1 EVTALYSFEGQQPCDLSFQAGDRITVLTRTDSQFDWWEGRL-----RGRVGIFPANYVS 54
>gnl|CDD|212810 cd11877, SH3_PIX, Src Homology 3 domain of Pak Interactive
eXchange factors. PIX proteins are Rho guanine
nucleotide exchange factors (GEFs), which activate
small GTPases by exchanging bound GDP for free GTP.
They act as GEFs for both Cdc42 and Rac 1, and have
been implicated in cell motility, adhesion, neurite
outgrowth, and cell polarity. Vertebrates contain two
proteins from the PIX subfamily, alpha-PIX and
beta-PIX. Alpha-PIX, also called ARHGEF6, is localized
in dendritic spines where it regulates spine
morphogenesis. Mutations in the ARHGEF6 gene cause
X-linked intellectual disability in humans. Beta-PIX
play roles in regulating neuroendocrine exocytosis,
focal adhesion maturation, cell migration, synaptic
vesicle localization, and insulin secretion. PIX
proteins contain an N-terminal SH3 domain followed by
RhoGEF (also called Dbl-homologous or DH) and
Pleckstrin Homology (PH) domains, and a C-terminal
leucine-zipper domain for dimerization. The SH3 domain
of PIX binds to an atypical PxxxPR motif in
p21-activated kinases (PAKs) with high affinity. The
binding of PAKs to PIX facilitate the localization of
PAKs to focal complexes and also localizes PAKs to PIX
targets Cdc43 and Rac, leading to the activation of
PAKs. SH3 domains are protein interaction domains that
bind to proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 53
Score = 60.4 bits (147), Expect = 2e-12
Identities = 28/54 (51%), Positives = 32/54 (59%), Gaps = 2/54 (3%)
Query: 41 YRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVEP 94
RA + F N DELSF GDII V Q E GW G L G+TGWFP +YV+
Sbjct: 2 VRAKFNFEGTNEDELSFDKGDIIT--VTQVVEGGWWEGTLNGKTGWFPSNYVKE 53
Score = 51.2 bits (123), Expect = 5e-09
Identities = 20/48 (41%), Positives = 32/48 (66%), Gaps = 1/48 (2%)
Query: 108 AAYPYDSTEPGDLTFNQDEVIYVTKK-ENDWWTGTIGDRTGLFPSNYV 154
A + ++ T +L+F++ ++I VT+ E WW GT+ +TG FPSNYV
Sbjct: 4 AKFNFEGTNEDELSFDKGDIITVTQVVEGGWWEGTLNGKTGWFPSNYV 51
Score = 49.2 bits (118), Expect = 2e-08
Identities = 19/51 (37%), Positives = 29/51 (56%), Gaps = 5/51 (9%)
Query: 226 PYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVK 276
+ T+ ++LS +G +I + + GWWEG L K GWFP++YVK
Sbjct: 7 NFEGTNEDELSFDKGDIITVTQVVEGGWWEGTLNGK-----TGWFPSNYVK 52
>gnl|CDD|212760 cd11826, SH3_Abi, Src homology 3 domain of Abl Interactor proteins.
Abl interactor (Abi) proteins are adaptor proteins
serving as binding partners and substrates of Abl
tyrosine kinases. They are involved in regulating actin
cytoskeletal reorganization and play important roles in
membrane-ruffling, endocytosis, cell motility, and cell
migration. They localize to sites of actin
polymerization in epithelial adherens junction and
immune synapses, as well as to the leading edge of
lamellipodia. Vertebrates contain two Abi proteins, Abi1
and Abi2. Abi1 displays a wide expression pattern while
Abi2 is highly expressed in the eye and brain. Abi
proteins contain a homeobox homology domain, a
proline-rich region, and a SH3 domain. The SH3 domain of
Abi binds to a PxxP motif in Abl. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 52
Score = 58.1 bits (141), Expect = 1e-11
Identities = 21/49 (42%), Positives = 33/49 (67%), Gaps = 1/49 (2%)
Query: 107 IAAYPYDSTEPGDLTFNQDEVIYVTKK-ENDWWTGTIGDRTGLFPSNYV 154
+A Y Y + + +L+F + ++IYVTKK ++ W+ G + TGLFP NYV
Sbjct: 3 VALYDYTADKDDELSFQEGDIIYVTKKNDDGWYEGVLNGVTGLFPGNYV 51
Score = 53.9 bits (130), Expect = 4e-10
Identities = 27/52 (51%), Positives = 34/52 (65%), Gaps = 2/52 (3%)
Query: 42 RAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVE 93
A+Y++ + DELSFQ GDII V K+N + GW G L G TG FP +YVE
Sbjct: 3 VALYDYTADKDDELSFQEGDIIYV-TKKNDD-GWYEGVLNGVTGLFPGNYVE 52
Score = 42.7 bits (101), Expect = 4e-06
Identities = 20/53 (37%), Positives = 26/53 (49%), Gaps = 5/53 (9%)
Query: 223 VLAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYV 275
L YTA ++LS G +I + KK GW+EG L G FP +YV
Sbjct: 4 ALYDYTADKDDELSFQEGDIIYVTKKNDDGWYEGVLNGV-----TGLFPGNYV 51
>gnl|CDD|212808 cd11875, SH3_CD2AP-like_3, Third Src Homology 3 domain (SH3C) of
CD2-associated protein and similar proteins. This
subfamily is composed of the third SH3 domain (SH3C) of
CD2AP, CIN85 (Cbl-interacting protein of 85 kDa), and
similar domains. CD2AP and CIN85 are adaptor proteins
that bind to protein partners and assemble complexes
that have been implicated in T cell activation, kidney
function, and apoptosis of neuronal cells. They also
associate with endocytic proteins, actin cytoskeleton
components, and other adaptor proteins involved in
receptor tyrosine kinase (RTK) signaling. CD2AP and the
main isoform of CIN85 contain three SH3 domains, a
proline-rich region, and a C-terminal coiled-coil
domain. All of these domains enable CD2AP and CIN85 to
bind various protein partners and assemble complexes
that have been implicated in many different functions.
SH3C of both proteins have been shown to bind to
ubiquitin. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP
motifs. They play versatile and diverse roles in the
cell including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 55
Score = 57.4 bits (139), Expect = 3e-11
Identities = 21/55 (38%), Positives = 36/55 (65%)
Query: 40 RYRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVEP 94
+ R ++++ + N DEL+ + GDI+ + K + GW GEL G+ G FP+++VEP
Sbjct: 1 KARVLFDYEAENEDELTLREGDIVTILSKDCEDKGWWKGELNGKRGVFPDNFVEP 55
Score = 48.5 bits (116), Expect = 5e-08
Identities = 21/59 (35%), Positives = 31/59 (52%), Gaps = 7/59 (11%)
Query: 221 ATVLAPYTATSSEQLSLSRGQLIMIRKKTT--TGWWEGELQAKGKKRQVGWFPASYVKV 277
A VL Y A + ++L+L G ++ I K GWW+GEL K G FP ++V+
Sbjct: 2 ARVLFDYEAENEDELTLREGDIVTILSKDCEDKGWWKGELNGK-----RGVFPDNFVEP 55
Score = 46.6 bits (111), Expect = 2e-07
Identities = 13/55 (23%), Positives = 28/55 (50%), Gaps = 3/55 (5%)
Query: 105 YYIAAYPYDSTEPGDLTFNQDEVIYVTKKEND---WWTGTIGDRTGLFPSNYVVP 156
+ Y++ +LT + +++ + K+ + WW G + + G+FP N+V P
Sbjct: 1 KARVLFDYEAENEDELTLREGDIVTILSKDCEDKGWWKGELNGKRGVFPDNFVEP 55
>gnl|CDD|212817 cd11884, SH3_MYO15, Src Homology 3 domain of Myosin XV. This
subfamily is composed of proteins with similarity to
Myosin XVa. Myosin XVa is an unconventional myosin that
is critical for the normal growth of mechanosensory
stereocilia of inner ear hair cells. Mutations in the
myosin XVa gene are associated with nonsyndromic
hearing loss. Myosin XVa contains a unique N-terminal
extension followed by a motor domain, light
chain-binding IQ motifs, and a tail consisting of a
pair of MyTH4-FERM tandems separated by a SH3 domain,
and a PDZ domain. SH3 domains bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs; they play a role in the
regulation of enzymes by intramolecular interactions,
changing the subcellular localization of signal pathway
components and mediate multiprotein complex assemblies.
Length = 56
Score = 56.6 bits (137), Expect = 5e-11
Identities = 22/54 (40%), Positives = 36/54 (66%), Gaps = 1/54 (1%)
Query: 42 RAIYEFVSRNGDELSFQPGDII-MVPVKQNAEPGWLAGELRGQTGWFPESYVEP 94
A+ +++R+ LSF GD+I ++P + +PGWL G L G++G FP+ YV+P
Sbjct: 3 VAVRAYITRDQTLLSFHKGDVIKLLPKEGPLDPGWLFGTLDGRSGAFPKEYVQP 56
Score = 45.8 bits (109), Expect = 4e-07
Identities = 19/56 (33%), Positives = 29/56 (51%), Gaps = 4/56 (7%)
Query: 105 YYIAAYPYDSTEPGDLTFNQDEVIYVTKKEND----WWTGTIGDRTGLFPSNYVVP 156
Y +A Y + + L+F++ +VI + KE W GT+ R+G FP YV P
Sbjct: 1 YVVAVRAYITRDQTLLSFHKGDVIKLLPKEGPLDPGWLFGTLDGRSGAFPKEYVQP 56
Score = 28.8 bits (65), Expect = 0.42
Identities = 15/55 (27%), Positives = 20/55 (36%), Gaps = 8/55 (14%)
Query: 224 LAPYTATSSEQLSLSRGQLIMIRKKTTT---GWWEGELQAKGKKRQVGWFPASYV 275
+ Y LS +G +I + K GW G L + G FP YV
Sbjct: 5 VRAYITRDQTLLSFHKGDVIKLLPKEGPLDPGWLFGTLDGR-----SGAFPKEYV 54
>gnl|CDD|213018 cd12142, SH3_D21-like, Src Homology 3 domain of SH3
domain-containing protein 21 (SH3D21) and similar
proteins. N-terminal SH3 domain of the uncharacterized
protein SH3 domain-containing protein 21, and similar
uncharacterized domains, it belongs to the CD2AP-like_3
subfamily of proteins. The CD2AP-like_3 subfamily is
composed of the third SH3 domain (SH3C) of CD2AP, CIN85
(Cbl-interacting protein of 85 kDa), and similar
domains. CD2AP and CIN85 are adaptor proteins that bind
to protein partners and assemble complexes that have
been implicated in T cell activation, kidney function,
and apoptosis of neuronal cells. They also associate
with endocytic proteins, actin cytoskeleton components,
and other adaptor proteins involved in receptor
tyrosine kinase (RTK) signaling. CD2AP and the main
isoform of CIN85 contain three SH3 domains, a
proline-rich region, and a C-terminal coiled-coil
domain. All of these domains enable CD2AP and CIN85 to
bind various protein partners and assemble complexes
that have been implicated in many different functions.
SH3C of both proteins have been shown to bind to
ubiquitin. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP
motifs. They play versatile and diverse roles in the
cell including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 55
Score = 56.3 bits (136), Expect = 7e-11
Identities = 20/54 (37%), Positives = 34/54 (62%)
Query: 41 YRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVEP 94
R ++++ DEL+ + GD+I V K+ + GW GEL G+ G+FP+++V P
Sbjct: 2 CRVLFDYNPVAPDELALKKGDVIEVISKETEDEGWWEGELNGRRGFFPDNFVMP 55
Score = 44.8 bits (106), Expect = 9e-07
Identities = 20/55 (36%), Positives = 31/55 (56%), Gaps = 7/55 (12%)
Query: 223 VLAPYTATSSEQLSLSRGQLIMIRKKTT--TGWWEGELQAKGKKRQVGWFPASYV 275
VL Y + ++L+L +G +I + K T GWWEGEL + G+FP ++V
Sbjct: 4 VLFDYNPVAPDELALKKGDVIEVISKETEDEGWWEGELNGR-----RGFFPDNFV 53
Score = 42.8 bits (101), Expect = 5e-06
Identities = 19/55 (34%), Positives = 28/55 (50%), Gaps = 3/55 (5%)
Query: 105 YYIAAYPYDSTEPGDLTFNQDEVIYVTKKEND---WWTGTIGDRTGLFPSNYVVP 156
Y + Y+ P +L + +VI V KE + WW G + R G FP N+V+P
Sbjct: 1 YCRVLFDYNPVAPDELALKKGDVIEVISKETEDEGWWEGELNGRRGFFPDNFVMP 55
>gnl|CDD|212697 cd11763, SH3_SNX9_like, Src Homology 3 domain of Sorting Nexin 9
and similar proteins. Sorting nexins (SNXs) are Phox
homology (PX) domain containing proteins that are
involved in regulating membrane traffic and protein
sorting in the endosomal system. SNXs differ from each
other in their lipid-binding specificity, subcellular
localization and specific function in the endocytic
pathway. This subfamily consists of SH3 domain
containing SNXs including SNX9, SNX18, SNX33, and
similar proteins. SNX9 is localized to plasma membrane
endocytic sites and acts primarily in clathrin-mediated
endocytosis, while SNX18 is localized to peripheral
endosomal structures, and acts in a trafficking pathway
that is clathrin-independent but relies on AP-1 and
PACS1. SH3 domains are protein interaction domains that
bind to proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 55
Score = 55.8 bits (135), Expect = 9e-11
Identities = 23/56 (41%), Positives = 35/56 (62%), Gaps = 2/56 (3%)
Query: 40 RYRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGE-LRGQTGWFPESYVEP 94
+ RA+Y+F S+ ELS + G+++ + +Q+ GWL G RG+ G FP SYVE
Sbjct: 1 KVRALYDFDSQPSGELSLRAGEVLTI-TRQDVGDGWLEGRNSRGEVGLFPSSYVEI 55
Score = 38.1 bits (89), Expect = 2e-04
Identities = 20/58 (34%), Positives = 32/58 (55%), Gaps = 5/58 (8%)
Query: 221 ATVLAPYTATSSEQLSLSRGQ-LIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVKV 277
L + + S +LSL G+ L + R+ GW EG ++G+ VG FP+SYV++
Sbjct: 2 VRALYDFDSQPSGELSLRAGEVLTITRQDVGDGWLEGR-NSRGE---VGLFPSSYVEI 55
Score = 37.7 bits (88), Expect = 3e-04
Identities = 19/54 (35%), Positives = 30/54 (55%), Gaps = 5/54 (9%)
Query: 105 YYIAAYPYDSTEPGDLTFNQDEVIYVTKKEND--WWTG--TIGDRTGLFPSNYV 154
A Y +DS G+L+ EV+ +T+++ W G + G+ GLFPS+YV
Sbjct: 1 KVRALYDFDSQPSGELSLRAGEVLTITRQDVGDGWLEGRNSRGEV-GLFPSSYV 53
>gnl|CDD|212761 cd11827, SH3_MyoIe_If_like, Src homology 3 domain of Myosins Ie,
If, and similar proteins. Myosins Ie (MyoIe) and If
(MyoIf) are nonmuscle, unconventional, long tailed,
class I myosins containing an N-terminal motor domain
and a myosin tail with TH1, TH2, and SH3 domains. MyoIe
interacts with the endocytic proteins, dynamin and
synaptojanin-1, through its SH3 domain; it may play a
role in clathrin-dependent endocytosis. In the kidney,
MyoIe is critical for podocyte function and normal
glomerular filtration. Mutations in MyoIe is associated
with focal segmental glomerulosclerosis, a disease
characterized by massive proteinuria and progression to
end-stage kidney disease. MyoIf is predominantly
expressed in the immune system; it plays a role in
immune cell motility and innate immunity. Mutations in
MyoIf may be associated with the loss of hearing. The
MyoIf gene has also been found to be fused to the MLL
(Mixed lineage leukemia) gene in infant acute myeloid
leukemias (AML). SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP motifs.
They play versatile and diverse roles in the cell
including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 53
Score = 55.1 bits (133), Expect = 2e-10
Identities = 20/48 (41%), Positives = 32/48 (66%), Gaps = 1/48 (2%)
Query: 108 AAYPYDSTEPGDLTFNQDEVIYVTKK-ENDWWTGTIGDRTGLFPSNYV 154
A Y YD+ + +L+FN+ ++I + K+ + WWTG + + GLFP NYV
Sbjct: 4 ALYAYDAQDTDELSFNEGDIIEILKEDPSGWWTGRLRGKEGLFPGNYV 51
Score = 54.0 bits (130), Expect = 5e-10
Identities = 24/54 (44%), Positives = 37/54 (68%), Gaps = 2/54 (3%)
Query: 40 RYRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVE 93
+ +A+Y + +++ DELSF GDII + +K++ GW G LRG+ G FP +YVE
Sbjct: 1 QCKALYAYDAQDTDELSFNEGDIIEI-LKEDPS-GWWTGRLRGKEGLFPGNYVE 52
Score = 38.5 bits (90), Expect = 1e-04
Identities = 21/52 (40%), Positives = 31/52 (59%), Gaps = 5/52 (9%)
Query: 224 LAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYV 275
L Y A +++LS + G +I I K+ +GWW G L +GK+ G FP +YV
Sbjct: 5 LYAYDAQDTDELSFNEGDIIEILKEDPSGWWTGRL--RGKE---GLFPGNYV 51
>gnl|CDD|212989 cd12056, SH3_CD2AP_3, Third Src Homology 3 domain (SH3C) of
CD2-associated protein. CD2AP, also called CMS (Cas
ligand with Multiple SH3 domains) or METS1
(Mesenchyme-to-Epithelium Transition protein with SH3
domains), is a cytosolic adaptor protein that plays a
role in regulating the cytoskeleton. It is critical in
cell-to-cell union necessary for kidney function. It
also stabilizes the contact between a T cell and
antigen-presenting cells. It is primarily expressed in
podocytes at the cytoplasmic face of the slit diaphragm
and serves as a linker anchoring podocin and nephrin to
the actin cytoskeleton. CD2AP contains three SH3
domains, a proline-rich region, and a C-terminal
coiled-coil domain. All of these domains enable CD2AP
to bind various protein partners and assemble complexes
that have been implicated in many different functions.
This alignment model represents the third SH3 domain
(SH3C) of CD2AP. SH3C has been shown to bind ubiquitin.
SH3 domains are protein interaction domains that bind
to proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 57
Score = 54.4 bits (131), Expect = 4e-10
Identities = 22/51 (43%), Positives = 34/51 (66%)
Query: 42 RAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYV 92
+A++ + N DEL F+ G+II++ K EPGW GEL G+ G FP+++V
Sbjct: 5 KALFHYEGTNEDELDFKEGEIILIISKDTGEPGWWKGELNGKEGVFPDNFV 55
Score = 44.8 bits (106), Expect = 8e-07
Identities = 19/55 (34%), Positives = 29/55 (52%), Gaps = 3/55 (5%)
Query: 104 EYYIAAYPYDSTEPGDLTFNQDEVIYVTKK---ENDWWTGTIGDRTGLFPSNYVV 155
EY A + Y+ T +L F + E+I + K E WW G + + G+FP N+V
Sbjct: 2 EYCKALFHYEGTNEDELDFKEGEIILIISKDTGEPGWWKGELNGKEGVFPDNFVS 56
Score = 40.2 bits (94), Expect = 4e-05
Identities = 21/59 (35%), Positives = 30/59 (50%), Gaps = 7/59 (11%)
Query: 219 EIATVLAPYTATSSEQLSLSRGQLIMIRKKTT--TGWWEGELQAKGKKRQVGWFPASYV 275
E L Y T+ ++L G++I+I K T GWW+GEL K G FP ++V
Sbjct: 2 EYCKALFHYEGTNEDELDFKEGEIILIISKDTGEPGWWKGELNGKE-----GVFPDNFV 55
>gnl|CDD|212715 cd11781, SH3_Sorbs_1, First Src Homology 3 domain of Sorbin and
SH3 domain containing (Sorbs) proteins and similar
domains. This family, also called the vinexin family,
is composed predominantly of adaptor proteins
containing one sorbin homology (SoHo) and three SH3
domains. Members include the first SH3 domains of
Sorbs1 (or ponsin), Sorbs2 (or ArgBP2), Vinexin (or
Sorbs3), and similar domains. They are involved in the
regulation of cytoskeletal organization, cell adhesion,
and growth factor signaling. Members of this family
bind multiple partners including signaling molecules
like c-Abl, c-Arg, Sos, and c-Cbl, as well as
cytoskeletal molecules such as vinculin and afadin.
They may have overlapping functions. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 53
Score = 53.9 bits (130), Expect = 6e-10
Identities = 23/55 (41%), Positives = 32/55 (58%), Gaps = 6/55 (10%)
Query: 42 RAIYEFVSRNGDELSFQPGDIIMV--PVKQNAEPGWLAGELRGQTGWFPESYVEP 94
RA+Y F +++ ELS + GDII + + +N W GE G+ G FP SYVE
Sbjct: 3 RALYPFKAQSAKELSLKKGDIIYIRRQIDKN----WYEGEHNGRVGIFPASYVEI 53
Score = 52.0 bits (125), Expect = 2e-09
Identities = 24/57 (42%), Positives = 36/57 (63%), Gaps = 5/57 (8%)
Query: 221 ATVLAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVKV 277
A L P+ A S+++LSL +G +I IR++ W+EGE +VG FPASYV++
Sbjct: 2 ARALYPFKAQSAKELSLKKGDIIYIRRQIDKNWYEGEHNG-----RVGIFPASYVEI 53
Score = 39.2 bits (92), Expect = 7e-05
Identities = 14/49 (28%), Positives = 30/49 (61%), Gaps = 1/49 (2%)
Query: 107 IAAYPYDSTEPGDLTFNQDEVIYVTKK-ENDWWTGTIGDRTGLFPSNYV 154
A YP+ + +L+ + ++IY+ ++ + +W+ G R G+FP++YV
Sbjct: 3 RALYPFKAQSAKELSLKKGDIIYIRRQIDKNWYEGEHNGRVGIFPASYV 51
>gnl|CDD|212737 cd11803, SH3_Endophilin_A, Src homology 3 domain of Endophilin-A.
Endophilins play roles in synaptic vesicle formation,
virus budding, mitochondrial morphology maintenance,
receptor-mediated endocytosis inhibition, and endosomal
sorting. They are classified into two types, A and B.
Vertebrates contain three endophilin-A isoforms (A1,
A2, and A3). Endophilin-A proteins are enriched in the
brain and play multiple roles in receptor-mediated
endocytosis. They tubulate membranes and regulate
calcium influx into neurons to trigger the activation
of the endocytic machinery. They are also involved in
the sorting of plasma membrane proteins, actin filament
assembly, and the uncoating of clathrin-coated vesicles
for fusion with endosomes. Endophilins contain an
N-terminal N-BAR domain (BAR domain with an additional
N-terminal amphipathic helix), followed by a variable
region containing proline clusters, and a C-terminal
SH3 domain. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP
motifs. They play versatile and diverse roles in the
cell including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 55
Score = 53.4 bits (129), Expect = 7e-10
Identities = 24/53 (45%), Positives = 32/53 (60%), Gaps = 2/53 (3%)
Query: 41 YRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVE 93
RA+Y+F N EL F+ GDII + Q E W G + GQ+G+FP +YVE
Sbjct: 3 CRALYDFEPENEGELGFKEGDIITL-TNQIDE-NWYEGMVNGQSGFFPVNYVE 53
Score = 44.2 bits (105), Expect = 1e-06
Identities = 17/49 (34%), Positives = 29/49 (59%), Gaps = 3/49 (6%)
Query: 108 AAYPYDSTEPGDLTFNQDEVIYVTKK--ENDWWTGTIGDRTGLFPSNYV 154
A Y ++ G+L F + ++I +T + EN W+ G + ++G FP NYV
Sbjct: 5 ALYDFEPENEGELGFKEGDIITLTNQIDEN-WYEGMVNGQSGFFPVNYV 52
Score = 29.5 bits (67), Expect = 0.22
Identities = 13/45 (28%), Positives = 23/45 (51%), Gaps = 5/45 (11%)
Query: 234 QLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVKVM 278
+L G +I + + W+EG + Q G+FP +YV+V+
Sbjct: 16 ELGFKEGDIITLTNQIDENWYEGMVNG-----QSGFFPVNYVEVL 55
>gnl|CDD|212777 cd11843, SH3_PACSIN, Src homology 3 domain of Protein kinase C
and Casein kinase Substrate in Neurons (PACSIN)
proteins. PACSINs, also called Synaptic
dynamin-associated proteins (Syndapins), act as
regulators of cytoskeletal and membrane dynamics. They
bind both dynamin and Wiskott-Aldrich syndrome protein
(WASP), and may provide direct links between the actin
cytoskeletal machinery through WASP and
dynamin-dependent endocytosis. Vetebrates harbor three
isoforms with distinct expression patterns and specific
functions. PACSINs contain an N-terminal F-BAR domain
and a C-terminal SH3 domain. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles
in the cell including the regulation of enzymes,
changing the subcellular localization of signaling
pathway components, and mediating the formation of
multiprotein complex assemblies.
Length = 53
Score = 52.8 bits (127), Expect = 1e-09
Identities = 22/54 (40%), Positives = 34/54 (62%), Gaps = 1/54 (1%)
Query: 40 RYRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVE 93
RA+Y++ + DELSF+ GDI+ +++ E GW G L G+ G +P +YVE
Sbjct: 1 PVRALYDYEGQESDELSFKAGDILT-KLEEEDEQGWCKGRLDGRVGLYPANYVE 53
Score = 37.4 bits (87), Expect = 4e-04
Identities = 16/49 (32%), Positives = 29/49 (59%), Gaps = 2/49 (4%)
Query: 108 AAYPYDSTEPGDLTFNQDEVIYVTKKEND--WWTGTIGDRTGLFPSNYV 154
A Y Y+ E +L+F +++ ++E++ W G + R GL+P+NYV
Sbjct: 4 ALYDYEGQESDELSFKAGDILTKLEEEDEQGWCKGRLDGRVGLYPANYV 52
Score = 29.3 bits (66), Expect = 0.31
Identities = 15/50 (30%), Positives = 26/50 (52%), Gaps = 6/50 (12%)
Query: 227 YTATSSEQLSLSRGQLIM-IRKKTTTGWWEGELQAKGKKRQVGWFPASYV 275
Y S++LS G ++ + ++ GW +G L +VG +PA+YV
Sbjct: 8 YEGQESDELSFKAGDILTKLEEEDEQGWCKGRLDG-----RVGLYPANYV 52
>gnl|CDD|212720 cd11786, SH3_SH3RF_1, First Src Homology 3 domain of SH3 domain
containing ring finger proteins. This model represents
the first SH3 domain of SH3RF1 (or POSH), SH3RF2 (or
POSHER), SH3RF3 (POSH2), and similar domains. Members
of this family are scaffold proteins that function as
E3 ubiquitin-protein ligases. They all contain an
N-terminal RING finger domain and multiple SH3 domains;
SH3RF1 and SH3RF3 have four SH3 domains while SH3RF2
has three. SH3RF1 plays a role in calcium homeostasis
through the control of the ubiquitin domain protein
Herp. It may also have a role in regulating death
receptor mediated and JNK mediated apoptosis. SH3RF3
interacts with p21-activated kinase 2 (PAK2) and
GTP-loaded Rac1. It may play a role in regulating JNK
mediated apoptosis in certain conditions. SH3RF2 acts
as an anti-apoptotic regulator of the JNK pathway by
binding to and promoting the degradation of SH3RF1. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 53
Score = 52.7 bits (127), Expect = 1e-09
Identities = 19/52 (36%), Positives = 33/52 (63%), Gaps = 2/52 (3%)
Query: 42 RAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVE 93
+A+Y + + +LSF+ GDII++ ++ + W GE G+ G+FP SYV+
Sbjct: 3 KALYNYEGKEPGDLSFKKGDIILL--RKRIDENWYHGECNGKQGFFPASYVQ 52
Score = 50.4 bits (121), Expect = 9e-09
Identities = 18/48 (37%), Positives = 31/48 (64%), Gaps = 1/48 (2%)
Query: 108 AAYPYDSTEPGDLTFNQDEVIYVTKK-ENDWWTGTIGDRTGLFPSNYV 154
A Y Y+ EPGDL+F + ++I + K+ + +W+ G + G FP++YV
Sbjct: 4 ALYNYEGKEPGDLSFKKGDIILLRKRIDENWYHGECNGKQGFFPASYV 51
Score = 45.8 bits (109), Expect = 4e-07
Identities = 21/57 (36%), Positives = 29/57 (50%), Gaps = 5/57 (8%)
Query: 221 ATVLAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVKV 277
A L Y LS +G +I++RK+ W+ GE K G+FPASYV+V
Sbjct: 2 AKALYNYEGKEPGDLSFKKGDIILLRKRIDENWYHGECNGK-----QGFFPASYVQV 53
>gnl|CDD|215659 pfam00018, SH3_1, SH3 domain. SH3 (Src homology 3) domains are
often indicative of a protein involved in signal
transduction related to cytoskeletal organisation. First
described in the Src cytoplasmic tyrosine kinase. The
structure is a partly opened beta barrel.
Length = 47
Score = 52.6 bits (127), Expect = 1e-09
Identities = 19/47 (40%), Positives = 29/47 (61%), Gaps = 2/47 (4%)
Query: 107 IAAYPYDSTEPGDLTFNQDEVIYVTKKEND-WWTGT-IGDRTGLFPS 151
+A Y Y + EP +L+F + ++I V +K +D WW G G + GL PS
Sbjct: 1 VALYDYTAREPDELSFKKGDIIIVLEKSDDGWWKGRLKGGKEGLIPS 47
Score = 49.9 bits (120), Expect = 1e-08
Identities = 21/48 (43%), Positives = 29/48 (60%), Gaps = 3/48 (6%)
Query: 42 RAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGEL-RGQTGWFP 88
A+Y++ +R DELSF+ GDII+V K + GW G L G+ G P
Sbjct: 1 VALYDYTAREPDELSFKKGDIIIVLEKSDD--GWWKGRLKGGKEGLIP 46
Score = 46.0 bits (110), Expect = 3e-07
Identities = 17/51 (33%), Positives = 28/51 (54%), Gaps = 4/51 (7%)
Query: 222 TVLAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPA 272
L YTA ++LS +G +I++ +K+ GWW+G L K + G P+
Sbjct: 1 VALYDYTAREPDELSFKKGDIIIVLEKSDDGWWKGRL----KGGKEGLIPS 47
>gnl|CDD|212705 cd11771, SH3_Pex13p_fungal, Src Homology 3 domain of fungal
peroxisomal membrane protein Pex13p. Pex13p, located
in the peroxisomal membrane, contains two transmembrane
regions and a C-terminal SH3 domain. It binds to the
peroxisomal targeting type I (PTS1) receptor Pex5p and
the docking factor Pex14p through its SH3 domain. It is
essential for both PTS1 and PTS2 protein import
pathways into the peroxisomal matrix. Pex13p binds
Pex14p, which contains a PxxP motif, in a classical
fashion to the proline-rich ligand binding site of its
SH3 domain. It binds the WxxxF/Y motif of Pex5p in a
novel site that does not compete with Pex14p binding.
SH3 domains are protein interaction domains that bind
to proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 60
Score = 52.7 bits (127), Expect = 1e-09
Identities = 24/57 (42%), Positives = 31/57 (54%), Gaps = 5/57 (8%)
Query: 42 RAIYEFVSRN-GDELSFQPGDIIMVPVK---QNAEPGWLAGELR-GQTGWFPESYVE 93
RA+Y+F N ELS + GDI+ V K + W G R G+ GWFP +YVE
Sbjct: 3 RALYDFTPENPEMELSLKKGDIVAVLSKTDPLGRDSEWWKGRTRDGRIGWFPSNYVE 59
Score = 40.7 bits (96), Expect = 3e-05
Identities = 18/55 (32%), Positives = 28/55 (50%), Gaps = 8/55 (14%)
Query: 108 AAYPYDSTEPG-DLTFNQDEVIYVTKK------ENDWWTGTIGD-RTGLFPSNYV 154
A Y + P +L+ + +++ V K +++WW G D R G FPSNYV
Sbjct: 4 ALYDFTPENPEMELSLKKGDIVAVLSKTDPLGRDSEWWKGRTRDGRIGWFPSNYV 58
Score = 34.9 bits (81), Expect = 0.003
Identities = 20/65 (30%), Positives = 33/65 (50%), Gaps = 14/65 (21%)
Query: 221 ATVLAPYT-ATSSEQLSLSRGQLIMIRKKT-----TTGWWEGELQAKGKKR--QVGWFPA 272
L +T +LSL +G ++ + KT + WW KG+ R ++GWFP+
Sbjct: 2 CRALYDFTPENPEMELSLKKGDIVAVLSKTDPLGRDSEWW------KGRTRDGRIGWFPS 55
Query: 273 SYVKV 277
+YV+V
Sbjct: 56 NYVEV 60
>gnl|CDD|212816 cd11883, SH3_Sdc25, Src Homology 3 domain of Sdc25/Cdc25 guanine
nucleotide exchange factors. This subfamily is composed
of the Saccharomyces cerevisiae guanine nucleotide
exchange factors (GEFs) Sdc25 and Cdc25, and similar
proteins. These GEFs regulate Ras by stimulating the
GDP/GTP exchange on Ras. Cdc25 is involved in the
Ras/PKA pathway that plays an important role in the
regulation of metabolism, stress responses, and
proliferation, depending on available nutrients and
conditions. Proteins in this subfamily contain an
N-terminal SH3 domain as well as REM (Ras exchanger
motif) and RasGEF domains at the C-terminus. SH3 domains
bind to proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs; they play a
role in the regulation of enzymes by intramolecular
interactions, changing the subcellular localization of
signal pathway components and mediate multiprotein
complex assemblies.
Length = 55
Score = 51.9 bits (125), Expect = 2e-09
Identities = 19/55 (34%), Positives = 30/55 (54%)
Query: 220 IATVLAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASY 274
+ L +T S QLS G +I + K +GWW+G + + K + GWFP++Y
Sbjct: 1 VVVALYDFTPKSKNQLSFKAGDIIYVLNKDPSGWWDGVIISSSGKVKRGWFPSNY 55
Score = 49.2 bits (118), Expect = 3e-08
Identities = 18/53 (33%), Positives = 25/53 (47%), Gaps = 6/53 (11%)
Query: 107 IAAYPYDSTEPGDLTFNQDEVIYV-TKKENDWWTGTIGDRT-----GLFPSNY 153
+A Y + L+F ++IYV K + WW G I + G FPSNY
Sbjct: 3 VALYDFTPKSKNQLSFKAGDIIYVLNKDPSGWWDGVIISSSGKVKRGWFPSNY 55
Score = 45.7 bits (109), Expect = 4e-07
Identities = 20/55 (36%), Positives = 32/55 (58%), Gaps = 7/55 (12%)
Query: 42 RAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGEL-----RGQTGWFPESY 91
A+Y+F ++ ++LSF+ GDII V K + GW G + + + GWFP +Y
Sbjct: 3 VALYDFTPKSKNQLSFKAGDIIYVLNKDPS--GWWDGVIISSSGKVKRGWFPSNY 55
>gnl|CDD|212752 cd11818, SH3_Eve1_5, Fifth Src homology 3 domain of ADAM-binding
protein Eve-1. Eve-1, also called SH3
domain-containing protein 19 (SH3D19) or EEN-binding
protein (EBP), exists in multiple alternatively spliced
isoforms. The longest isoform contains five SH3 domain
in the C-terminal region and seven proline-rich motifs
in the N-terminal region. It is abundantly expressed in
skeletal muscle and heart, and may be involved in
regulating the activity of ADAMs (A disintegrin and
metalloproteases). Eve-1 interacts with EEN, an
endophilin involved in endocytosis and may be the
target of the MLL-EEN fusion protein that is implicated
in leukemogenesis. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP
motifs. They play versatile and diverse roles in the
cell including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 50
Score = 51.7 bits (124), Expect = 3e-09
Identities = 24/52 (46%), Positives = 36/52 (69%), Gaps = 2/52 (3%)
Query: 40 RYRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESY 91
+ RA+Y+F N DELSF+ GDII + E W++GELRG++G FP+++
Sbjct: 1 KARALYDFTGENEDELSFKAGDIITELESIDEE--WMSGELRGKSGIFPKNF 50
Score = 27.8 bits (62), Expect = 1.00
Identities = 9/40 (22%), Positives = 21/40 (52%), Gaps = 6/40 (15%)
Query: 114 STEPGDLTFNQDEVIYVTKKENDWWTGTIGDRTGLFPSNY 153
S + GD+ + + + +W +G + ++G+FP N+
Sbjct: 17 SFKAGDIITELESI------DEEWMSGELRGKSGIFPKNF 50
>gnl|CDD|219499 pfam07653, SH3_2, Variant SH3 domain. SH3 (Src homology 3)
domains are often indicative of a protein involved in
signal transduction related to cytoskeletal
organisation. First described in the Src cytoplasmic
tyrosine kinase. The structure is a partly opened beta
barrel.
Length = 53
Score = 51.7 bits (125), Expect = 3e-09
Identities = 20/55 (36%), Positives = 33/55 (60%), Gaps = 2/55 (3%)
Query: 40 RYRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVEP 94
R I+++V+ + +ELS + GD++ V + ++ GW GE G+ G P SYVE
Sbjct: 1 YGRVIFDYVATDPNELSLKKGDVVKV-LDKDD-NGWWEGERGGRRGLVPSSYVEE 53
Score = 51.3 bits (124), Expect = 3e-09
Identities = 20/53 (37%), Positives = 30/53 (56%), Gaps = 1/53 (1%)
Query: 105 YYIAAYPYDSTEPGDLTFNQDEVIYVTKKE-NDWWTGTIGDRTGLFPSNYVVP 156
Y + Y +T+P +L+ + +V+ V K+ N WW G G R GL PS+YV
Sbjct: 1 YGRVIFDYVATDPNELSLKKGDVVKVLDKDDNGWWEGERGGRRGLVPSSYVEE 53
Score = 40.1 bits (95), Expect = 4e-05
Identities = 19/51 (37%), Positives = 28/51 (54%), Gaps = 5/51 (9%)
Query: 227 YTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVKV 277
Y AT +LSL +G ++ + K GWWEGE + + G P+SYV+
Sbjct: 8 YVATDPNELSLKKGDVVKVLDKDDNGWWEGE-----RGGRRGLVPSSYVEE 53
>gnl|CDD|212727 cd11793, SH3_ephexin1_like, Src homology 3 domain of
ephexin-1-like SH3 domain containing Rho guanine
nucleotide exchange factors. Members of this family
contain RhoGEF (also called Dbl-homologous or DH),
Pleckstrin Homology (PH), and C-terminal SH3 domains.
They include the Rho guanine nucleotide exchange
factors ARHGEF5, ARHGEF16, ARHGEF19, ARHGEF26, ARHGEF27
(also called ephexin-1), and similar proteins, and are
also called ephexins because they interact directly
with ephrin A receptors. GEFs interact with Rho GTPases
via their DH domains to catalyze nucleotide exchange by
stabilizing the nucleotide-free GTPase intermediate.
They play important roles in neuronal development. The
SH3 domains of ARHGEFs play an autoinhibitory role
through intramolecular interactions with a proline-rich
region N-terminal to the DH domain. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 55
Score = 51.6 bits (124), Expect = 4e-09
Identities = 21/53 (39%), Positives = 31/53 (58%), Gaps = 4/53 (7%)
Query: 43 AIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGE-LR-GQTGWFPESYVE 93
++ + ++ DEL+ + GD++ V K GW GE LR G+ GWFP SY E
Sbjct: 4 CVHAYTAQQPDELTLEEGDVVNVLRKMP--DGWYEGERLRDGERGWFPSSYTE 54
Score = 49.6 bits (119), Expect = 2e-08
Identities = 19/53 (35%), Positives = 31/53 (58%), Gaps = 3/53 (5%)
Query: 223 VLAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYV 275
+ YTA ++L+L G ++ + +K GW+EGE G++ GWFP+SY
Sbjct: 4 CVHAYTAQQPDELTLEEGDVVNVLRKMPDGWYEGERLRDGER---GWFPSSYT 53
Score = 36.2 bits (84), Expect = 0.001
Identities = 16/52 (30%), Positives = 27/52 (51%), Gaps = 3/52 (5%)
Query: 107 IAAYPYDSTEPGDLTFNQDEVIYVTKKEND-WWTGT-IGD-RTGLFPSNYVV 155
+ Y + +P +LT + +V+ V +K D W+ G + D G FPS+Y
Sbjct: 3 QCVHAYTAQQPDELTLEEGDVVNVLRKMPDGWYEGERLRDGERGWFPSSYTE 54
>gnl|CDD|212909 cd11976, SH3_VAV1_2, C-terminal (or second) Src homology 3 domain
of VAV1 protein. VAV1 is expressed predominantly in
the hematopoietic system and it plays an important role
in the development and activation of B and T cells. It
is activated by tyrosine phosphorylation to function as
a guanine nucleotide exchange factor (GEF) for Rho
GTPases following cell surface receptor activation,
triggering various effects such as cytoskeletal
reorganization, transcription regulation, cell cycle
progression, and calcium mobilization. It also serves
as a scaffold protein and has been shown to interact
with Ku70, Socs1, Janus kinase 2, SIAH2, S100B, Abl
gene, ZAP-70, SLP76, and Syk, among others. VAV
proteins contain several domains that enable their
function: N-terminal calponin homology (CH), acidic,
RhoGEF (also called Dbl-homologous or DH), Pleckstrin
Homology (PH), C1 (zinc finger), SH2, and two SH3
domains. The C-terminal SH3 domain of Vav1 interacts
with a wide variety of proteins including cytoskeletal
regulators (zyxin), RNA-binding proteins (Sam68),
transcriptional regulators, viral proteins, and dynamin
2. SH3 domains are protein interaction domains that
bind to proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 54
Score = 51.5 bits (123), Expect = 4e-09
Identities = 24/52 (46%), Positives = 35/52 (67%), Gaps = 1/52 (1%)
Query: 42 RAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVE 93
+A Y+F +R+ ELS + GDII + K+ + GW GE+ G+ GWFP +YVE
Sbjct: 3 KARYDFCARDRSELSLKEGDIIKILNKK-GQQGWWRGEIYGRVGWFPANYVE 53
Score = 43.0 bits (101), Expect = 4e-06
Identities = 22/51 (43%), Positives = 29/51 (56%), Gaps = 6/51 (11%)
Query: 227 YTATSSEQLSLSRGQLIMI-RKKTTTGWWEGELQAKGKKRQVGWFPASYVK 276
+ A +LSL G +I I KK GWW GE+ + VGWFPA+YV+
Sbjct: 8 FCARDRSELSLKEGDIIKILNKKGQQGWWRGEIYGR-----VGWFPANYVE 53
Score = 36.5 bits (84), Expect = 7e-04
Identities = 16/49 (32%), Positives = 27/49 (55%), Gaps = 2/49 (4%)
Query: 108 AAYPYDSTEPGDLTFNQDEVIYVTKK--ENDWWTGTIGDRTGLFPSNYV 154
A Y + + + +L+ + ++I + K + WW G I R G FP+NYV
Sbjct: 4 ARYDFCARDRSELSLKEGDIIKILNKKGQQGWWRGEIYGRVGWFPANYV 52
>gnl|CDD|212723 cd11789, SH3_Nebulin_family_C, C-terminal Src Homology 3 domain
of the Nebulin family of proteins. Nebulin family
proteins contain multiple nebulin repeats, and may
contain an N-terminal LIM domain and/or a C-terminal
SH3 domain. They have molecular weights ranging from 34
to 900 kD, depending on the number of nebulin repeats,
and they all bind actin. They are involved in the
regulation of actin filament architecture and function
as stabilizers and scaffolds for cytoskeletal
structures with which they associate, such as long
actin filaments or focal adhesions. Nebulin family
proteins that contain a C-terminal SH3 domain include
the giant filamentous protein nebulin, nebulette,
Lasp1, and Lasp2. Lasp2, also called LIM-nebulette, is
an alternatively spliced variant of nebulette. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 55
Score = 50.8 bits (122), Expect = 7e-09
Identities = 25/60 (41%), Positives = 36/60 (60%), Gaps = 10/60 (16%)
Query: 40 RYRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEP---GWLAG--ELRGQTGWFPESYVEP 94
RYRA+Y++ + + DE+SFQ GD+I N E GW+ G + GQ+G P +YVE
Sbjct: 1 RYRAMYDYAAADDDEVSFQEGDVI-----INVEIIDDGWMEGTVQRTGQSGMLPANYVEL 55
Score = 34.6 bits (80), Expect = 0.004
Identities = 18/55 (32%), Positives = 30/55 (54%), Gaps = 5/55 (9%)
Query: 106 YIAAYPYDSTEPGDLTFNQ-DEVIYVTKKENDWWTGTIGDRT---GLFPSNYVVP 156
Y A Y Y + + +++F + D +I V ++ W GT+ RT G+ P+NYV
Sbjct: 2 YRAMYDYAAADDDEVSFQEGDVIINVEIIDDGWMEGTV-QRTGQSGMLPANYVEL 55
Score = 28.4 bits (64), Expect = 0.56
Identities = 17/50 (34%), Positives = 26/50 (52%), Gaps = 3/50 (6%)
Query: 227 YTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVK 276
Y A +++S G +I+ + GW EG +Q G Q G PA+YV+
Sbjct: 8 YAAADDDEVSFQEGDVIINVEIIDDGWMEGTVQRTG---QSGMLPANYVE 54
>gnl|CDD|212806 cd11873, SH3_CD2AP-like_1, First Src Homology 3 domain (SH3A) of
CD2-associated protein and similar proteins. This
subfamily is composed of the first SH3 domain (SH3A) of
CD2AP, CIN85 (Cbl-interacting protein of 85 kDa), and
similar domains. CD2AP and CIN85 are adaptor proteins
that bind to protein partners and assemble complexes
that have been implicated in T cell activation, kidney
function, and apoptosis of neuronal cells. They also
associate with endocytic proteins, actin cytoskeleton
components, and other adaptor proteins involved in
receptor tyrosine kinase (RTK) signaling. CD2AP and the
main isoform of CIN85 contain three SH3 domains, a
proline-rich region, and a C-terminal coiled-coil
domain. All of these domains enable CD2AP and CIN85 to
bind various protein partners and assemble complexes
that have been implicated in many different functions.
SH3A of both proteins bind to an atypical PXXXPR motif
at the C-terminus of Cbl and the cytoplasmic domain of
the cell adhesion protein CD2. CIN85 SH3A binds to
internal proline-rich motifs within the proline-rich
region; this intramolecular interaction serves as a
regulatory mechanism to keep CIN85 in a closed
conformation, preventing the recruitment of other
proteins. CIN85 SH3A has also been shown to bind
ubiquitin. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate affinity
and selectivity, preferentially to PxxP motifs. They
play versatile and diverse roles in the cell including
the regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 53
Score = 50.7 bits (122), Expect = 7e-09
Identities = 20/50 (40%), Positives = 29/50 (58%), Gaps = 1/50 (2%)
Query: 106 YIAAYPYDSTEPGDLTFNQDEVIY-VTKKENDWWTGTIGDRTGLFPSNYV 154
I + YD+ EP +LT ++I V K E WW GT+ + G+FP N+V
Sbjct: 2 VIVEFDYDAEEPDELTLKVGDIITNVKKMEEGWWEGTLNGKRGMFPDNFV 51
Score = 48.4 bits (116), Expect = 4e-08
Identities = 19/53 (35%), Positives = 31/53 (58%), Gaps = 2/53 (3%)
Query: 41 YRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVE 93
+++ + DEL+ + GDII VK+ E GW G L G+ G FP+++V+
Sbjct: 2 VIVEFDYDAEEPDELTLKVGDII-TNVKKMEE-GWWEGTLNGKRGMFPDNFVK 52
Score = 48.0 bits (115), Expect = 5e-08
Identities = 23/57 (40%), Positives = 30/57 (52%), Gaps = 5/57 (8%)
Query: 221 ATVLAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVKV 277
V Y A ++L+L G +I KK GWWEG L GK+ G FP ++VKV
Sbjct: 2 VIVEFDYDAEEPDELTLKVGDIITNVKKMEEGWWEGTL--NGKR---GMFPDNFVKV 53
>gnl|CDD|212750 cd11816, SH3_Eve1_3, Third Src homology 3 domain of ADAM-binding
protein Eve-1. Eve-1, also called SH3
domain-containing protein 19 (SH3D19) or EEN-binding
protein (EBP), exists in multiple alternatively spliced
isoforms. The longest isoform contains five SH3 domain
in the C-terminal region and seven proline-rich motifs
in the N-terminal region. It is abundantly expressed in
skeletal muscle and heart, and may be involved in
regulating the activity of ADAMs (A disintegrin and
metalloproteases). Eve-1 interacts with EEN, an
endophilin involved in endocytosis and may be the
target of the MLL-EEN fusion protein that is implicated
in leukemogenesis. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP
motifs. They play versatile and diverse roles in the
cell including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 51
Score = 50.1 bits (120), Expect = 1e-08
Identities = 21/53 (39%), Positives = 28/53 (52%), Gaps = 2/53 (3%)
Query: 40 RYRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYV 92
R A ++F DELSF GD+I + E W GEL G+ G FP ++V
Sbjct: 1 RCVARFDFEGEQEDELSFSEGDVITLKEYVGEE--WAKGELNGKIGIFPLNFV 51
Score = 37.8 bits (88), Expect = 2e-04
Identities = 12/49 (24%), Positives = 29/49 (59%), Gaps = 1/49 (2%)
Query: 107 IAAYPYDSTEPGDLTFNQDEVIYVTKKEND-WWTGTIGDRTGLFPSNYV 154
+A + ++ + +L+F++ +VI + + + W G + + G+FP N+V
Sbjct: 3 VARFDFEGEQEDELSFSEGDVITLKEYVGEEWAKGELNGKIGIFPLNFV 51
Score = 27.8 bits (62), Expect = 1.1
Identities = 14/49 (28%), Positives = 25/49 (51%), Gaps = 5/49 (10%)
Query: 227 YTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYV 275
+ ++LS S G +I +++ W +GEL K +G FP ++V
Sbjct: 8 FEGEQEDELSFSEGDVITLKEYVGEEWAKGELNGK-----IGIFPLNFV 51
>gnl|CDD|212911 cd11978, SH3_VAV3_2, C-terminal (or second) Src homology 3 domain
of VAV3 protein. VAV3 is ubiquitously expressed and
functions as a phosphorylation-dependent guanine
nucleotide exchange factor (GEF) for RhoA, RhoG, and
Rac1. It has been implicated to function in the
hematopoietic, bone, cerebellar, and cardiovascular
systems. VAV3 is essential in axon guidance in neurons
that control blood pressure and respiration. It is
overexpressed in prostate cancer cells and it plays a
role in regulating androgen receptor transcriptional
activity. VAV proteins contain several domains that
enable their function: N-terminal calponin homology
(CH), acidic, RhoGEF (also called Dbl-homologous or
DH), Pleckstrin Homology (PH), C1 (zinc finger), SH2,
and two SH3 domains. The SH3 domain of VAV is involved
in the localization of proteins to specific sites
within the cell, by interacting with proline-rich
sequences within target proteins. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 56
Score = 50.0 bits (119), Expect = 1e-08
Identities = 22/51 (43%), Positives = 32/51 (62%), Gaps = 1/51 (1%)
Query: 43 AIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVE 93
A Y+F +R+ ELS GD++ + K + GW GE+ G+ GWFP +YVE
Sbjct: 5 ARYDFCARDMRELSLLKGDVVKIYTKMSTN-GWWRGEVNGRVGWFPSTYVE 54
Score = 41.9 bits (98), Expect = 1e-05
Identities = 22/58 (37%), Positives = 33/58 (56%), Gaps = 6/58 (10%)
Query: 220 IATVLAPYTATSSEQLSLSRGQLIMI-RKKTTTGWWEGELQAKGKKRQVGWFPASYVK 276
IA + A +LSL +G ++ I K +T GWW GE+ + VGWFP++YV+
Sbjct: 2 IAIARYDFCARDMRELSLLKGDVVKIYTKMSTNGWWRGEVNGR-----VGWFPSTYVE 54
Score = 35.8 bits (82), Expect = 0.002
Identities = 18/50 (36%), Positives = 26/50 (52%), Gaps = 2/50 (4%)
Query: 107 IAAYPYDSTEPGDLTFNQDEV--IYVTKKENDWWTGTIGDRTGLFPSNYV 154
IA Y + + + +L+ + +V IY N WW G + R G FPS YV
Sbjct: 4 IARYDFCARDMRELSLLKGDVVKIYTKMSTNGWWRGEVNGRVGWFPSTYV 53
>gnl|CDD|212929 cd11996, SH3_Intersectin2_5, Fifth Src homology 3 domain (or SH3E)
of Intersectin-2. Intersectin-2 (ITSN2) is an adaptor
protein that functions in exo- and endocytosis, actin
cytoskeletal reorganization, and signal transduction. It
plays a role in clathrin-coated pit (CCP) formation. It
binds to many proteins through its multidomain structure
and facilitate the assembly of multimeric complexes.
ITSN2 also functions as a specific GEF for Cdc42
activation in epithelial morphogenesis, and is required
in mitotic spindle orientation. It exists in
alternatively spliced short and long isoforms. The short
isoform contains two Eps15 homology domains (EH1 and
EH2), a coiled-coil region and five SH3 domains
(SH3A-E), while the long isoform, in addition, contains
RhoGEF (also called Dbl-homologous or DH), Pleckstrin
homology (PH) and C2 domains. The fifth SH3 domain (or
SH3E) of ITSN2 is expected to bind protein partners,
similar to ITSN1 which has been shown to bind many
protein partners including SGIP1, Sos1, dynamin1/2,
CIN85, c-Cbl, SHIP2, N-WASP, and synaptojanin-1, among
others. SH3 domains are protein interaction domains that
bind to proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 54
Score = 50.0 bits (119), Expect = 2e-08
Identities = 23/49 (46%), Positives = 32/49 (65%), Gaps = 1/49 (2%)
Query: 107 IAAYPYDSTEPGDLTFNQDEVIYVTKKEN-DWWTGTIGDRTGLFPSNYV 154
IA Y Y + +L+F++ ++I V K++ DWW G I TGLFPSNYV
Sbjct: 4 IAMYDYTANNEDELSFSKGQLINVLNKDDPDWWQGEINGVTGLFPSNYV 52
Score = 48.4 bits (115), Expect = 4e-08
Identities = 23/51 (45%), Positives = 32/51 (62%), Gaps = 2/51 (3%)
Query: 43 AIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVE 93
A+Y++ + N DELSF G +I V K + P W GE+ G TG FP +YV+
Sbjct: 5 AMYDYTANNEDELSFSKGQLINVLNKDD--PDWWQGEINGVTGLFPSNYVK 53
Score = 44.2 bits (104), Expect = 2e-06
Identities = 21/51 (41%), Positives = 31/51 (60%), Gaps = 5/51 (9%)
Query: 227 YTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVKV 277
YTA + ++LS S+GQLI + K WW+GE+ G FP++YVK+
Sbjct: 9 YTANNEDELSFSKGQLINVLNKDDPDWWQGEING-----VTGLFPSNYVKM 54
>gnl|CDD|212747 cd11813, SH3_SGSM3, Src Homology 3 domain of Small G protein
Signaling Modulator 3. SGSM3 is also called
Merlin-associated protein (MAP), RUN and SH3
domain-containing protein (RUSC3), RUN and TBC1
domain-containing protein 3 (RUTBC3), Rab
GTPase-activating protein 5 (RabGAP5), or Rab GAP-like
protein (RabGAPLP). It is expressed ubiquitously and
functions as a regulator of small G protein RAP- and
RAB-mediated neuronal signaling. It is involved in
modulating NGF-mediated neurite outgrowth and
differentiation. It also interacts with the tumor
suppressor merlin and may play a role in the
merlin-associated suppression of cell growth. SGSM3
contains TBC, SH3, and RUN domains. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 53
Score = 49.8 bits (119), Expect = 2e-08
Identities = 23/54 (42%), Positives = 32/54 (59%), Gaps = 2/54 (3%)
Query: 40 RYRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVE 93
R +A+ +F + DEL F+ DII + + Q E W+ GEL G GWFP +VE
Sbjct: 1 RAKALLDFERHDDDELGFRKNDIITI-ISQKDEHCWV-GELNGLRGWFPAKFVE 52
Score = 28.2 bits (63), Expect = 0.63
Identities = 10/44 (22%), Positives = 25/44 (56%), Gaps = 1/44 (2%)
Query: 112 YDSTEPGDLTFNQDEVIYV-TKKENDWWTGTIGDRTGLFPSNYV 154
++ + +L F ++++I + ++K+ W G + G FP+ +V
Sbjct: 8 FERHDDDELGFRKNDIITIISQKDEHCWVGELNGLRGWFPAKFV 51
Score = 27.1 bits (60), Expect = 1.9
Identities = 13/45 (28%), Positives = 21/45 (46%), Gaps = 5/45 (11%)
Query: 233 EQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVKV 277
++L + +I I + W GEL GWFPA +V++
Sbjct: 14 DELGFRKNDIITIISQKDEHCWVGELNG-----LRGWFPAKFVEL 53
>gnl|CDD|212994 cd12061, SH3_betaPIX, Src Homology 3 domain of beta-Pak
Interactive eXchange factor. Beta-PIX, also called Rho
guanine nucleotide exchange factor 7 (ARHGEF7) or Cool
(Cloned out of Library)-1, activates small GTPases by
exchanging bound GDP for free GTP. It acts as a GEF for
both Cdc42 and Rac 1, and plays important roles in
regulating neuroendocrine exocytosis, focal adhesion
maturation, cell migration, synaptic vesicle
localization, and insulin secretion. PIX proteins
contain an N-terminal SH3 domain followed by RhoGEF
(also called Dbl-homologous or DH) and Pleckstrin
Homology (PH) domains, and a C-terminal leucine-zipper
domain for dimerization. The SH3 domain of PIX binds to
an atypical PxxxPR motif in p21-activated kinases
(PAKs) with high affinity. The binding of PAKs to PIX
facilitate the localization of PAKs to focal complexes
and also localizes PAKs to PIX targets Cdc43 and Rac,
leading to the activation of PAKs. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 54
Score = 49.7 bits (118), Expect = 2e-08
Identities = 25/51 (49%), Positives = 30/51 (58%), Gaps = 2/51 (3%)
Query: 42 RAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYV 92
RA + F N DELSF GD+I V + E GW G G+TGWFP +YV
Sbjct: 3 RAKFNFQQTNEDELSFSKGDVIHV--TRVEEGGWWEGTHNGRTGWFPSNYV 51
Score = 47.4 bits (112), Expect = 1e-07
Identities = 22/48 (45%), Positives = 31/48 (64%), Gaps = 1/48 (2%)
Query: 108 AAYPYDSTEPGDLTFNQDEVIYVTKKEND-WWTGTIGDRTGLFPSNYV 154
A + + T +L+F++ +VI+VT+ E WW GT RTG FPSNYV
Sbjct: 4 AKFNFQQTNEDELSFSKGDVIHVTRVEEGGWWEGTHNGRTGWFPSNYV 51
Score = 42.8 bits (100), Expect = 6e-06
Identities = 17/50 (34%), Positives = 29/50 (58%), Gaps = 5/50 (10%)
Query: 227 YTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVK 276
+ T+ ++LS S+G +I + + GWWEG + GWFP++YV+
Sbjct: 8 FQQTNEDELSFSKGDVIHVTRVEEGGWWEGTHNGR-----TGWFPSNYVR 52
>gnl|CDD|212764 cd11830, SH3_VAV_2, C-terminal (or second) Src homology 3 domain
of VAV proteins. VAV proteins function both as
cytoplasmic guanine nucleotide exchange factors (GEFs)
for Rho GTPases and scaffold proteins and they play
important roles in cell signaling by coupling cell
surface receptors to various effector functions. They
play key roles in processes that require cytoskeletal
reorganization including immune synapse formation,
phagocytosis, cell spreading, and platelet aggregation,
among others. Vertebrates have three VAV proteins
(VAV1, VAV2, and VAV3). VAV proteins contain several
domains that enable their function: N-terminal calponin
homology (CH), acidic, RhoGEF (also called
Dbl-homologous or DH), Pleckstrin Homology (PH), C1
(zinc finger), SH2, and two SH3 domains. The SH3 domain
of VAV is involved in the localization of proteins to
specific sites within the cell, by interacting with
proline-rich sequences within target proteins. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 54
Score = 49.6 bits (118), Expect = 2e-08
Identities = 22/51 (43%), Positives = 34/51 (66%), Gaps = 1/51 (1%)
Query: 43 AIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVE 93
A Y+F +R+ ELS + GD++ + K+ + GW GE+ G+ GWFP +YVE
Sbjct: 4 ARYDFCARDMRELSLKEGDVVKIYNKKGQQ-GWWRGEINGRIGWFPSTYVE 53
Score = 39.5 bits (92), Expect = 7e-05
Identities = 19/51 (37%), Positives = 29/51 (56%), Gaps = 6/51 (11%)
Query: 227 YTATSSEQLSLSRGQLIMI-RKKTTTGWWEGELQAKGKKRQVGWFPASYVK 276
+ A +LSL G ++ I KK GWW GE+ + +GWFP++YV+
Sbjct: 8 FCARDMRELSLKEGDVVKIYNKKGQQGWWRGEINGR-----IGWFPSTYVE 53
Score = 36.5 bits (84), Expect = 0.001
Identities = 18/50 (36%), Positives = 26/50 (52%), Gaps = 2/50 (4%)
Query: 107 IAAYPYDSTEPGDLTFNQDEV--IYVTKKENDWWTGTIGDRTGLFPSNYV 154
A Y + + + +L+ + +V IY K + WW G I R G FPS YV
Sbjct: 3 KARYDFCARDMRELSLKEGDVVKIYNKKGQQGWWRGEINGRIGWFPSTYV 52
>gnl|CDD|212883 cd11950, SH3_GRAP2_C, C-terminal Src homology 3 domain of
GRB2-related adaptor protein 2. GRAP2 is also called
GADS (GRB2-related adapter downstream of Shc), GrpL,
GRB2L, Mona, or GRID (Grb2-related protein with insert
domain). It is expressed specifically in the
hematopoietic system. It plays an important role in T
cell receptor (TCR) signaling by promoting the formation
of the SLP-76:LAT complex, which couples the TCR to the
Ras pathway. It also has roles in antigen-receptor and
tyrosine kinase mediated signaling. GRAP2 is unique from
other GRB2-like adaptor proteins in that it can be
regulated by caspase cleavage. It contains an N-terminal
SH3 domain, a central SH2 domain, and a C-terminal SH3
domain. The C-terminal SH3 domain of GRAP2 binds to
different motifs found in substrate peptides including
the typical PxxP motif in hematopoietic progenitor
kinase 1 (HPK1), the RxxK motif in SLP-76 and HPK1, and
the RxxxxK motif in phosphatase-like protein HD-PTP. SH3
domains are protein interaction domains that typically
bind to proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 53
Score = 49.1 bits (117), Expect = 3e-08
Identities = 21/50 (42%), Positives = 29/50 (58%), Gaps = 1/50 (2%)
Query: 108 AAYPYDSTEPGDLTFNQDEVIYVTKKEN-DWWTGTIGDRTGLFPSNYVVP 156
A Y +++ E +L FN +VI V N WW G + + GLFP+NYV P
Sbjct: 4 ALYDFEALEDDELGFNSGDVIEVLDSSNPSWWKGRLHGKLGLFPANYVAP 53
Score = 47.5 bits (113), Expect = 9e-08
Identities = 23/53 (43%), Positives = 31/53 (58%), Gaps = 2/53 (3%)
Query: 42 RAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVEP 94
RA+Y+F + DEL F GD+I V ++ P W G L G+ G FP +YV P
Sbjct: 3 RALYDFEALEDDELGFNSGDVI--EVLDSSNPSWWKGRLHGKLGLFPANYVAP 53
Score = 29.4 bits (66), Expect = 0.24
Identities = 15/50 (30%), Positives = 25/50 (50%), Gaps = 5/50 (10%)
Query: 227 YTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVK 276
+ A ++L + G +I + + WW+G L K +G FPA+YV
Sbjct: 8 FEALEDDELGFNSGDVIEVLDSSNPSWWKGRLHGK-----LGLFPANYVA 52
>gnl|CDD|212894 cd11961, SH3_Abp1_fungi_C2, Second C-terminal Src homology 3 domain
of Fungal Actin-binding protein 1. Abp1 is an adaptor
protein that functions in receptor-mediated endocytosis
and vesicle trafficking. It contains an N-terminal
actin-binding module, the actin-depolymerizing factor
(ADF) homology domain, a central proline-rich region,
and a C-terminal SH3 domain (many yeast Abp1 proteins
contain two C-terminal SH3 domains). Yeast Abp1 also
contains two acidic domains that bind directly to the
Arp2/3 complex, which is required to initiate actin
polymerization. The SH3 domain of yeast Abp1 binds and
localizes the kinases, Ark1p and Prk1p, which facilitate
actin patch disassembly following vesicle
internalization. It also mediates the localization to
the actin patch of the synaptojanin-like protein, Sjl2p,
which plays a key role in endocytosis. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 53
Score = 48.7 bits (116), Expect = 4e-08
Identities = 21/48 (43%), Positives = 29/48 (60%), Gaps = 1/48 (2%)
Query: 108 AAYPYDSTEPGDLTF-NQDEVIYVTKKENDWWTGTIGDRTGLFPSNYV 154
A Y YD+ E +L+F D++I + ++DWW G GLFPSNYV
Sbjct: 4 ALYDYDAAEDNELSFFENDKIINIEFVDDDWWLGECHGSRGLFPSNYV 51
Score = 43.7 bits (103), Expect = 2e-06
Identities = 20/55 (36%), Positives = 28/55 (50%), Gaps = 8/55 (14%)
Query: 42 RAIYEFVSRNGDELSFQPGDIIMVPVKQNAE---PGWLAGELRGQTGWFPESYVE 93
+A+Y++ + +ELSF D I+ N E W GE G G FP +YVE
Sbjct: 3 KALYDYDAAEDNELSFFENDKII-----NIEFVDDDWWLGECHGSRGLFPSNYVE 52
Score = 31.0 bits (70), Expect = 0.072
Identities = 17/56 (30%), Positives = 24/56 (42%), Gaps = 5/56 (8%)
Query: 221 ATVLAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVK 276
A L Y A +LS I+ + WW GE G + G FP++YV+
Sbjct: 2 AKALYDYDAAEDNELSFFENDKIINIEFVDDDWWLGECH--GSR---GLFPSNYVE 52
>gnl|CDD|212767 cd11833, SH3_Stac_1, First C-terminal Src homology 3 domain of SH3
and cysteine-rich domain-containing (Stac) proteins.
Stac proteins are putative adaptor proteins that contain
a cysteine-rich C1 domain and one or two SH3 domains at
the C-terminus. There are three mammalian members
(Stac1, Stac2, and Stac3) of this family. Stac1 and
Stac3 contain two SH3 domains while Stac2 contains a
single SH3 domain at the C-terminus. This model
represents the first C-terminal SH3 domain of Stac1 and
Stac3, and the single C-terminal SH3 domain of Stac2.
Stac1 and Stac2 have been found to be expressed
differently in mature dorsal root ganglia (DRG) neurons.
Stac1 is mainly expressed in peptidergic neurons while
Stac2 is found in a subset of nonpeptidergic and all
trkB+ neurons. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP motifs.
They play versatile and diverse roles in the cell
including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 53
Score = 48.3 bits (115), Expect = 4e-08
Identities = 20/51 (39%), Positives = 26/51 (50%), Gaps = 1/51 (1%)
Query: 105 YYIAAYPYDSTEPGDLTFNQDEVIYVTKKEN-DWWTGTIGDRTGLFPSNYV 154
Y+A Y + E DL + I + N DWW G I DR G FP+N+V
Sbjct: 1 TYVALYKFKPQENEDLEMRPGDKITLLDDSNEDWWKGKIEDRVGFFPANFV 51
Score = 41.7 bits (98), Expect = 1e-05
Identities = 16/52 (30%), Positives = 30/52 (57%), Gaps = 2/52 (3%)
Query: 41 YRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYV 92
Y A+Y+F + ++L +PGD I + N + W G++ + G+FP ++V
Sbjct: 2 YVALYKFKPQENEDLEMRPGDKITLLDDSNED--WWKGKIEDRVGFFPANFV 51
Score = 30.2 bits (68), Expect = 0.15
Identities = 14/52 (26%), Positives = 27/52 (51%), Gaps = 5/52 (9%)
Query: 224 LAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYV 275
L + +E L + G I + + WW+G+++ + VG+FPA++V
Sbjct: 5 LYKFKPQENEDLEMRPGDKITLLDDSNEDWWKGKIEDR-----VGFFPANFV 51
>gnl|CDD|212919 cd11986, SH3_Stac3_1, First C-terminal Src homology 3 domain of SH3
and cysteine-rich domain-containing protein 3 (Stac3).
Stac proteins are putative adaptor proteins that contain
a cysteine-rich C1 domain and one or two SH3 domains at
the C-terminus. There are three mammalian members
(Stac1, Stac2, and Stac3) of this family. Stac1 and
Stac3 contain two SH3 domains while Stac2 contains a
single SH3 domain at the C-terminus. Stac1 and Stac2
have been found to be expressed differently in mature
dorsal root ganglia (DRG) neurons. Stac1 is mainly
expressed in peptidergic neurons while Stac2 is found in
a subset of nonpeptidergic and all trkB+ neurons. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 53
Score = 48.4 bits (115), Expect = 5e-08
Identities = 21/52 (40%), Positives = 32/52 (61%), Gaps = 1/52 (1%)
Query: 105 YYIAAYPYDSTEPGDLTFNQDEVIYVTKKEND-WWTGTIGDRTGLFPSNYVV 155
Y++A Y + + E DL F+ E I V N+ WW G IG++TG FP N+++
Sbjct: 1 YFVALYRFKALEKDDLDFHPGERITVIDDSNEEWWRGKIGEKTGYFPMNFII 52
Score = 38.7 bits (90), Expect = 1e-04
Identities = 18/52 (34%), Positives = 30/52 (57%), Gaps = 2/52 (3%)
Query: 41 YRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYV 92
+ A+Y F + D+L F PG+ I V N E W G++ +TG+FP +++
Sbjct: 2 FVALYRFKALEKDDLDFHPGERITVIDDSNEE--WWRGKIGEKTGYFPMNFI 51
>gnl|CDD|212771 cd11837, SH3_Intersectin_2, Second Src homology 3 domain (or
SH3B) of Intersectin. Intersectins (ITSNs) are adaptor
proteins that function in exo- and endocytosis, actin
cytoskeletal reorganization, and signal transduction.
They are essential for initiating clathrin-coated pit
formation. They bind to many proteins through their
multidomain structure and facilitate the assembly of
multimeric complexes. Vertebrates contain two ITSN
proteins, ITSN1 and ITSN2, which exist in alternatively
spliced short and long isoforms. The short isoforms
contain two Eps15 homology domains (EH1 and EH2), a
coiled-coil region and five SH3 domains (SH3A-E), while
the long isoforms, in addition, contain RhoGEF (also
called Dbl-homologous or DH), Pleckstrin homology (PH)
and C2 domains. ITSN1 and ITSN2 are both widely
expressed, with variations depending on tissue type and
stage of development. The second SH3 domain (or SH3B)
of ITSN1 has been shown to bind WNK and CdGAP. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 53
Score = 48.1 bits (115), Expect = 6e-08
Identities = 23/54 (42%), Positives = 31/54 (57%), Gaps = 4/54 (7%)
Query: 40 RYRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGEL-RGQTGWFPESYV 92
A+Y + ++ + LSF GDII V +Q W GEL G+ GWFP+SYV
Sbjct: 1 TATALYPWRAKKENHLSFAKGDIITVLEQQEM---WWFGELEGGEEGWFPKSYV 51
Score = 46.2 bits (110), Expect = 3e-07
Identities = 22/56 (39%), Positives = 31/56 (55%), Gaps = 5/56 (8%)
Query: 221 ATVLAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVK 276
AT L P+ A LS ++G +I + ++ WW GEL+ + GWFP SYVK
Sbjct: 2 ATALYPWRAKKENHLSFAKGDIITVLEQQEM-WWFGELE----GGEEGWFPKSYVK 52
Score = 45.4 bits (108), Expect = 6e-07
Identities = 16/50 (32%), Positives = 28/50 (56%), Gaps = 1/50 (2%)
Query: 106 YIAAYPYDSTEPGDLTFNQDEVIYVTKKENDWWTGTI-GDRTGLFPSNYV 154
A YP+ + + L+F + ++I V +++ WW G + G G FP +YV
Sbjct: 2 ATALYPWRAKKENHLSFAKGDIITVLEQQEMWWFGELEGGEEGWFPKSYV 51
>gnl|CDD|212979 cd12046, SH3_p67phox_C, C-terminal (or second) Src Homology 3
domain of the p67phox subunit of NADPH oxidase.
p67phox, also called Neutrophil cytosol factor 2
(NCF-2), is a cytosolic subunit of the phagocytic NADPH
oxidase complex (also called Nox2 or gp91phox) which
plays a crucial role in the cellular response to
bacterial infection. NADPH oxidase catalyzes the
transfer of electrons from NADPH to oxygen during
phagocytosis forming superoxide and reactive oxygen
species. p67phox plays a regulatory role and contains
N-terminal TPR, first SH3 (or N-terminal or central
SH3), PB1, and C-terminal SH3 domains. It binds, via its
C-terminal SH3 domain, to a proline-rich region of
p47phox and upon activation, this complex assembles with
flavocytochrome b558, the Nox2-p22phox heterodimer.
Concurrently, RacGTP translocates to the membrane and
interacts with the TPR domain of p67phox, which leads to
the activation of NADPH oxidase. The PB1 domain of
p67phox binds to its partner PB1 domain in p40phox, and
this facilitates the assembly of p47phox-p67phox at the
membrane. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate affinity
and selectivity, preferentially to PxxP motifs. They
play versatile and diverse roles in the cell including
the regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 53
Score = 47.9 bits (114), Expect = 7e-08
Identities = 19/53 (35%), Positives = 30/53 (56%), Gaps = 1/53 (1%)
Query: 105 YYIAAYPYDSTEPGDLTFNQDEVIYVTKKEN-DWWTGTIGDRTGLFPSNYVVP 156
+A + Y++++P DL F + +VI V K N DW G + G+FPS +V
Sbjct: 1 QVVALFSYEASQPEDLEFQKGDVILVLSKVNEDWLEGQCKGKIGIFPSAFVED 53
Score = 47.1 bits (112), Expect = 1e-07
Identities = 19/52 (36%), Positives = 33/52 (63%), Gaps = 2/52 (3%)
Query: 43 AIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVEP 94
A++ + + ++L FQ GD+I+V K N + WL G+ +G+ G FP ++VE
Sbjct: 4 ALFSYEASQPEDLEFQKGDVILVLSKVNED--WLEGQCKGKIGIFPSAFVED 53
Score = 39.4 bits (92), Expect = 7e-05
Identities = 16/55 (29%), Positives = 28/55 (50%), Gaps = 5/55 (9%)
Query: 222 TVLAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVK 276
L Y A+ E L +G +I++ K W EG+ + K +G FP+++V+
Sbjct: 3 VALFSYEASQPEDLEFQKGDVILVLSKVNEDWLEGQCKGK-----IGIFPSAFVE 52
>gnl|CDD|212882 cd11949, SH3_GRB2_C, C-terminal Src homology 3 domain of Growth
factor receptor-bound protein 2. GRB2 is a critical
signaling molecule that regulates the Ras pathway by
linking tyrosine kinases to the Ras guanine nucleotide
releasing protein Sos (son of sevenless), which
converts Ras to the active GTP-bound state. It is
ubiquitously expressed in all tissues throughout
development and is important in cell cycle progression,
motility, morphogenesis, and angiogenesis. In
lymphocytes, GRB2 is associated with antigen receptor
signaling components. GRB2 contains an N-terminal SH3
domain, a central SH2 domain, and a C-terminal SH3
domain. The C-terminal SH3 domain of GRB2 binds to Gab2
(Grb2-associated binder 2) through epitopes containing
RxxK motifs, as well as to the proline-rich C-terminus
of FGRF2. SH3 domains are protein interaction domains
that typically bind to proline-rich ligands with
moderate affinity and selectivity, preferentially to
PxxP motifs. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 53
Score = 47.9 bits (114), Expect = 7e-08
Identities = 22/53 (41%), Positives = 31/53 (58%), Gaps = 2/53 (3%)
Query: 42 RAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVEP 94
+A+++F + EL F+ GD I V N++P W G GQTG FP +YV P
Sbjct: 3 QALFDFDPQEDGELGFRRGDFI--EVMDNSDPNWWKGACHGQTGMFPRNYVTP 53
Score = 46.0 bits (109), Expect = 4e-07
Identities = 19/50 (38%), Positives = 28/50 (56%), Gaps = 1/50 (2%)
Query: 108 AAYPYDSTEPGDLTFNQDEVIYVTKKEN-DWWTGTIGDRTGLFPSNYVVP 156
A + +D E G+L F + + I V + +WW G +TG+FP NYV P
Sbjct: 4 ALFDFDPQEDGELGFRRGDFIEVMDNSDPNWWKGACHGQTGMFPRNYVTP 53
Score = 31.0 bits (70), Expect = 0.069
Identities = 14/56 (25%), Positives = 20/56 (35%), Gaps = 5/56 (8%)
Query: 221 ATVLAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVK 276
L + +L RG I + + WW+G Q G FP +YV
Sbjct: 2 VQALFDFDPQEDGELGFRRGDFIEVMDNSDPNWWKGACHG-----QTGMFPRNYVT 52
>gnl|CDD|212990 cd12057, SH3_CIN85_3, Third Src Homology 3 domain (SH3C) of
Cbl-interacting protein of 85 kDa. CIN85, also called
SH3 domain-containing kinase-binding protein 1
(SH3KBP1) or CD2-binding protein 3 (CD2BP3) or Ruk, is
an adaptor protein that is involved in the
downregulation of receptor tyrosine kinases by
facilitating endocytosis through interaction with
endophilin-associated ubiquitin ligase Cbl proteins. It
is also important in many other cellular processes
including vesicle-mediated transport, cytoskeletal
remodelling, apoptosis, cell adhesion and migration,
and viral infection, among others. CIN85 exists as
multiple variants from alternative splicing; the main
variant contains three SH3 domains, a proline-rich
region, and a C-terminal coiled-coil domain. All of
these domains enable CIN85 to bind various protein
partners and assemble complexes that have been
implicated in many different functions. This alignment
model represents the third SH3 domain (SH3C) of CIN85.
SH3C has been shown to bind ubiquitin. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 56
Score = 48.0 bits (114), Expect = 8e-08
Identities = 18/52 (34%), Positives = 34/52 (65%)
Query: 42 RAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVE 93
+ ++ + ++N DEL+ + GDI+ + K + GW GEL G+ G FP+++V+
Sbjct: 3 KVLFPYEAQNEDELTIKEGDIVTLISKDCIDAGWWEGELNGRRGVFPDNFVK 54
Score = 41.8 bits (98), Expect = 1e-05
Identities = 21/58 (36%), Positives = 35/58 (60%), Gaps = 7/58 (12%)
Query: 223 VLAPYTATSSEQLSLSRGQLIMIRKK--TTTGWWEGELQAKGKKRQVGWFPASYVKVM 278
VL PY A + ++L++ G ++ + K GWWEGEL G++ G FP ++VK++
Sbjct: 4 VLFPYEAQNEDELTIKEGDIVTLISKDCIDAGWWEGELN--GRR---GVFPDNFVKLL 56
Score = 39.5 bits (92), Expect = 8e-05
Identities = 14/48 (29%), Positives = 27/48 (56%), Gaps = 3/48 (6%)
Query: 110 YPYDSTEPGDLTFNQDEVIYVTKKE---NDWWTGTIGDRTGLFPSNYV 154
+PY++ +LT + +++ + K+ WW G + R G+FP N+V
Sbjct: 6 FPYEAQNEDELTIKEGDIVTLISKDCIDAGWWEGELNGRRGVFPDNFV 53
>gnl|CDD|212714 cd11780, SH3_Sorbs_3, Third (or C-terminal) Src Homology 3 domain
of Sorbin and SH3 domain containing (Sorbs) proteins
and similar domains. This family, also called the
vinexin family, is composed predominantly of adaptor
proteins containing one sorbin homology (SoHo) and
three SH3 domains. Members include the third SH3
domains of Sorbs1 (or ponsin), Sorbs2 (or ArgBP2),
Vinexin (or Sorbs3), and similar domains. They are
involved in the regulation of cytoskeletal
organization, cell adhesion, and growth factor
signaling. Members of this family bind multiple
partners including signaling molecules like c-Abl,
c-Arg, Sos, and c-Cbl, as well as cytoskeletal
molecules such as vinculin and afadin. They may have
overlapping functions. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles
in the cell including the regulation of enzymes,
changing the subcellular localization of signaling
pathway components, and mediating the formation of
multiprotein complex assemblies.
Length = 55
Score = 47.7 bits (114), Expect = 8e-08
Identities = 24/57 (42%), Positives = 31/57 (54%), Gaps = 4/57 (7%)
Query: 40 RYRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAG--ELRGQTGWFPESYVEP 94
RYRA+Y + +N DEL + GDI V V + + GW G E G G FP +YV
Sbjct: 1 RYRALYSYTPQNEDELELREGDI--VYVMEKCDDGWFVGTSERTGLFGTFPGNYVAR 55
Score = 34.2 bits (79), Expect = 0.006
Identities = 21/55 (38%), Positives = 29/55 (52%), Gaps = 5/55 (9%)
Query: 106 YIAAYPYDSTEPGDLTFNQDEVIYVTKKEND-WWTGTIGDRTGL---FPSNYVVP 156
Y A Y Y +L + +++YV +K +D W+ GT RTGL FP NYV
Sbjct: 2 YRALYSYTPQNEDELELREGDIVYVMEKCDDGWFVGTSE-RTGLFGTFPGNYVAR 55
Score = 28.8 bits (65), Expect = 0.48
Identities = 16/54 (29%), Positives = 26/54 (48%), Gaps = 3/54 (5%)
Query: 223 VLAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVK 276
L YT + ++L L G ++ + +K GW+ G + G G FP +YV
Sbjct: 4 ALYSYTPQNEDELELREGDIVYVMEKCDDGWFVGTSERTG---LFGTFPGNYVA 54
>gnl|CDD|212928 cd11995, SH3_Intersectin1_5, Fifth Src homology 3 domain (or
SH3E) of Intersectin-1. Intersectin-1 (ITSN1) is an
adaptor protein that functions in exo- and endocytosis,
actin cytoskeletal reorganization, and signal
transduction. It plays a role in clathrin-coated pit
(CCP) formation. It binds to many proteins through its
multidomain structure and facilitate the assembly of
multimeric complexes. ITSN1 localizes in membranous
organelles, CCPs, the Golgi complex, and may be
involved in the cell membrane trafficking system. It
exists in alternatively spliced short and long
isoforms. The short isoform contains two Eps15 homology
domains (EH1 and EH2), a coiled-coil region and five
SH3 domains (SH3A-E), while the long isoform, in
addition, contains RhoGEF (also called Dbl-homologous
or DH), Pleckstrin homology (PH) and C2 domains. The
fifth SH3 domain (or SH3E) of ITSN1 has been shown to
bind many protein partners including SGIP1, Sos1,
dynamin1/2, CIN85, c-Cbl, SHIP2, N-WASP, and
synaptojanin-1, among others. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles
in the cell including the regulation of enzymes,
changing the subcellular localization of signaling
pathway components, and mediating the formation of
multiprotein complex assemblies.
Length = 54
Score = 47.6 bits (113), Expect = 8e-08
Identities = 23/51 (45%), Positives = 33/51 (64%), Gaps = 2/51 (3%)
Query: 43 AIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVE 93
+Y++ ++N DEL+F G II V K+ +P W GEL GQ G FP +YV+
Sbjct: 5 GMYDYTAQNDDELAFSKGQIINVLNKE--DPDWWKGELNGQVGLFPSNYVK 53
Score = 46.1 bits (109), Expect = 3e-07
Identities = 21/49 (42%), Positives = 30/49 (61%), Gaps = 1/49 (2%)
Query: 107 IAAYPYDSTEPGDLTFNQDEVIYVTKKEN-DWWTGTIGDRTGLFPSNYV 154
I Y Y + +L F++ ++I V KE+ DWW G + + GLFPSNYV
Sbjct: 4 IGMYDYTAQNDDELAFSKGQIINVLNKEDPDWWKGELNGQVGLFPSNYV 52
Score = 45.7 bits (108), Expect = 5e-07
Identities = 22/51 (43%), Positives = 33/51 (64%), Gaps = 5/51 (9%)
Query: 227 YTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVKV 277
YTA + ++L+ S+GQ+I + K WW+GEL QVG FP++YVK+
Sbjct: 9 YTAQNDDELAFSKGQIINVLNKEDPDWWKGELNG-----QVGLFPSNYVKL 54
>gnl|CDD|212867 cd11934, SH3_Lasp1_C, C-terminal Src Homology 3 domain of LIM and
SH3 domain protein 1. Lasp1 is a cytoplasmic protein
that binds focal adhesion proteins and is involved in
cell signaling, migration, and proliferation. It is
overexpressed in several cancer cells including breast,
ovarian, bladder, and liver. In cancer cells, it can be
found in the nucleus; its degree of nuclear
localization correlates with tumor size and poor
prognosis. Lasp1 is a 36kD protein containing an
N-terminal LIM domain, two nebulin repeats, and a
C-terminal SH3 domain. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles
in the cell including the regulation of enzymes,
changing the subcellular localization of signaling
pathway components, and mediating the formation of
multiprotein complex assemblies.
Length = 59
Score = 47.7 bits (113), Expect = 9e-08
Identities = 27/57 (47%), Positives = 38/57 (66%), Gaps = 4/57 (7%)
Query: 39 RRYRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAG--ELRGQTGWFPESYVE 93
+RYRA+Y++ + + DE+SFQ GD I V V+Q + GW+ G E G TG P +YVE
Sbjct: 3 KRYRAVYDYNAADEDEVSFQDGDTI-VNVQQ-IDDGWMYGTVERTGDTGMLPANYVE 57
Score = 29.6 bits (66), Expect = 0.26
Identities = 14/52 (26%), Positives = 25/52 (48%), Gaps = 3/52 (5%)
Query: 227 YTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVKVM 278
Y A +++S G I+ ++ GW G ++ G G PA+YV+ +
Sbjct: 11 YNAADEDEVSFQDGDTIVNVQQIDDGWMYGTVERTG---DTGMLPANYVEAI 59
Score = 29.6 bits (66), Expect = 0.27
Identities = 18/53 (33%), Positives = 33/53 (62%), Gaps = 5/53 (9%)
Query: 106 YIAAYPYDSTEPGDLTF-NQDEVIYVTKKENDWWTGTI---GDRTGLFPSNYV 154
Y A Y Y++ + +++F + D ++ V + ++ W GT+ GD TG+ P+NYV
Sbjct: 5 YRAVYDYNAADEDEVSFQDGDTIVNVQQIDDGWMYGTVERTGD-TGMLPANYV 56
>gnl|CDD|212918 cd11985, SH3_Stac2_C, C-terminal Src homology 3 domain of SH3 and
cysteine-rich domain-containing protein 2 (Stac2). Stac
proteins are putative adaptor proteins that contain a
cysteine-rich C1 domain and one or two SH3 domains at
the C-terminus. There are three mammalian members
(Stac1, Stac2, and Stac3) of this family. Stac2 contains
a single SH3 domain at the C-terminus unlike Stac1 and
Stac3, which contain two C-terminal SH3 domains. Stac1
and Stac2 have been found to be expressed differently in
mature dorsal root ganglia (DRG) neurons. Stac1 is
mainly expressed in peptidergic neurons while Stac2 is
found in a subset of nonpeptidergic and all trkB+
neurons. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate affinity
and selectivity, preferentially to PxxP motifs. They
play versatile and diverse roles in the cell including
the regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 53
Score = 47.6 bits (113), Expect = 1e-07
Identities = 20/50 (40%), Positives = 26/50 (52%), Gaps = 1/50 (2%)
Query: 106 YIAAYPYDSTEPGDLTFNQDEVIYVTKKEN-DWWTGTIGDRTGLFPSNYV 154
Y+A Y + E DL + + V N DWW G GDR G FP+N+V
Sbjct: 2 YVALYKFLPQENNDLPLQPGDRVMVVDDSNEDWWKGKSGDRVGFFPANFV 51
Score = 42.6 bits (100), Expect = 6e-06
Identities = 18/53 (33%), Positives = 32/53 (60%), Gaps = 2/53 (3%)
Query: 41 YRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVE 93
Y A+Y+F+ + ++L QPGD +MV N + W G+ + G+FP ++V+
Sbjct: 2 YVALYKFLPQENNDLPLQPGDRVMVVDDSNED--WWKGKSGDRVGFFPANFVQ 52
Score = 29.5 bits (66), Expect = 0.24
Identities = 13/42 (30%), Positives = 23/42 (54%), Gaps = 5/42 (11%)
Query: 235 LSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVK 276
L L G +M+ + WW+G+ + VG+FPA++V+
Sbjct: 16 LPLQPGDRVMVVDDSNEDWWKGKSGDR-----VGFFPANFVQ 52
>gnl|CDD|212910 cd11977, SH3_VAV2_2, C-terminal (or second) Src homology 3 domain
of VAV2 protein. VAV2 is widely expressed and
functions as a guanine nucleotide exchange factor (GEF)
for RhoA, RhoB and RhoG and also activates Rac1 and
Cdc42. It is implicated in many cellular and
physiological functions including blood pressure
control, eye development, neurite outgrowth and
branching, EGFR endocytosis and degradation, and cell
cluster morphology, among others. It has been reported
to associate with Nek3. VAV proteins contain several
domains that enable their function: N-terminal calponin
homology (CH), acidic, RhoGEF (also called
Dbl-homologous or DH), Pleckstrin Homology (PH), C1
(zinc finger), SH2, and two SH3 domains. The SH3 domain
of VAV is involved in the localization of proteins to
specific sites within the cell, by interacting with
proline-rich sequences within target proteins. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 58
Score = 47.7 bits (113), Expect = 1e-07
Identities = 21/51 (41%), Positives = 31/51 (60%)
Query: 43 AIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVE 93
A Y F +R+ ELS + GD++ + + + GW GE G+ GWFP +YVE
Sbjct: 5 ARYNFAARDMRELSLREGDVVRIYSRIGGDQGWWKGETNGRIGWFPSTYVE 55
Score = 34.6 bits (79), Expect = 0.004
Identities = 18/55 (32%), Positives = 29/55 (52%), Gaps = 7/55 (12%)
Query: 227 YTATSSEQLSLSRGQLIMIRKKT--TTGWWEGELQAKGKKRQVGWFPASYVKVMG 279
+ A +LSL G ++ I + GWW+GE + +GWFP++YV+ G
Sbjct: 9 FAARDMRELSLREGDVVRIYSRIGGDQGWWKGETNGR-----IGWFPSTYVEEEG 58
Score = 29.2 bits (65), Expect = 0.31
Identities = 14/51 (27%), Positives = 26/51 (50%), Gaps = 3/51 (5%)
Query: 107 IAAYPYDSTEPGDLTFNQDEVIYVTKK---ENDWWTGTIGDRTGLFPSNYV 154
+A Y + + + +L+ + +V+ + + + WW G R G FPS YV
Sbjct: 4 VARYNFAARDMRELSLREGDVVRIYSRIGGDQGWWKGETNGRIGWFPSTYV 54
>gnl|CDD|212860 cd11927, SH3_SH3RF1_1, First Src Homology 3 domain of SH3 domain
containing ring finger protein 1, an E3
ubiquitin-protein ligase. SH3RF1 is also called POSH
(Plenty of SH3s) or SH3MD2 (SH3 multiple domains protein
2). It is a scaffold protein that acts as an E3
ubiquitin-protein ligase. It plays a role in calcium
homeostasis through the control of the ubiquitin domain
protein Herp. It may also have a role in regulating
death receptor mediated and JNK mediated apoptosis.
SH3RF1 also enhances the ubiquitination of ROMK1
potassium channel resulting in its increased
endocytosis. It contains an N-terminal RING finger
domain and four SH3 domains. This model represents the
first SH3 domain, located at the N-terminal half, of
SH3RF1. SH3 domains are protein interaction domains that
bind to proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 54
Score = 47.3 bits (112), Expect = 1e-07
Identities = 17/48 (35%), Positives = 31/48 (64%), Gaps = 1/48 (2%)
Query: 108 AAYPYDSTEPGDLTFNQDEVIYVTKK-ENDWWTGTIGDRTGLFPSNYV 154
A Y Y+ EPGDL F++ ++I + ++ + +W+ G + G FP+N+V
Sbjct: 5 ALYNYEGKEPGDLKFSKGDIIILRRQVDENWYHGEVNGIHGFFPTNFV 52
Score = 37.6 bits (87), Expect = 3e-04
Identities = 16/52 (30%), Positives = 31/52 (59%), Gaps = 2/52 (3%)
Query: 42 RAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVE 93
+A+Y + + +L F GDII++ ++ + W GE+ G G+FP ++V+
Sbjct: 4 KALYNYEGKEPGDLKFSKGDIIIL--RRQVDENWYHGEVNGIHGFFPTNFVQ 53
Score = 32.6 bits (74), Expect = 0.023
Identities = 15/57 (26%), Positives = 28/57 (49%), Gaps = 5/57 (8%)
Query: 221 ATVLAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVKV 277
A L Y L S+G +I++R++ W+ GE+ G+FP ++V++
Sbjct: 3 AKALYNYEGKEPGDLKFSKGDIIILRRQVDENWYHGEVNGIH-----GFFPTNFVQI 54
>gnl|CDD|212993 cd12060, SH3_alphaPIX, Src Homology 3 domain of alpha-Pak
Interactive eXchange factor. Alpha-PIX, also called
Rho guanine nucleotide exchange factor 6 (ARHGEF6) or
Cool (Cloned out of Library)-2, activates small GTPases
by exchanging bound GDP for free GTP. It acts as a GEF
for both Cdc42 and Rac 1, and is localized in dendritic
spines where it regulates spine morphogenesis. It
controls dendritic length and spine density in the
hippocampus. Mutations in the ARHGEF6 gene cause
X-linked intellectual disability in humans. PIX
proteins contain an N-terminal SH3 domain followed by
RhoGEF (also called Dbl-homologous or DH) and
Pleckstrin Homology (PH) domains, and a C-terminal
leucine-zipper domain for dimerization. The SH3 domain
of PIX binds to an atypical PxxxPR motif in
p21-activated kinases (PAKs) with high affinity. The
binding of PAKs to PIX facilitate the localization of
PAKs to focal complexes and also localizes PAKs to PIX
targets Cdc43 and Rac, leading to the activation of
PAKs. SH3 domains are protein interaction domains that
bind to proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 58
Score = 47.3 bits (112), Expect = 1e-07
Identities = 25/52 (48%), Positives = 30/52 (57%), Gaps = 2/52 (3%)
Query: 42 RAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVE 93
+A + F N DELS GDII V + E GW G L G+TGWFP +YV
Sbjct: 5 KARFNFKQTNEDELSVCKGDIIYV--TRVEEGGWWEGTLNGKTGWFPSNYVR 54
Score = 45.0 bits (106), Expect = 1e-06
Identities = 20/48 (41%), Positives = 31/48 (64%), Gaps = 1/48 (2%)
Query: 108 AAYPYDSTEPGDLTFNQDEVIYVTK-KENDWWTGTIGDRTGLFPSNYV 154
A + + T +L+ + ++IYVT+ +E WW GT+ +TG FPSNYV
Sbjct: 6 ARFNFKQTNEDELSVCKGDIIYVTRVEEGGWWEGTLNGKTGWFPSNYV 53
Score = 41.9 bits (98), Expect = 1e-05
Identities = 18/50 (36%), Positives = 30/50 (60%), Gaps = 5/50 (10%)
Query: 227 YTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVK 276
+ T+ ++LS+ +G +I + + GWWEG L K GWFP++YV+
Sbjct: 10 FKQTNEDELSVCKGDIIYVTRVEEGGWWEGTLNGK-----TGWFPSNYVR 54
>gnl|CDD|212753 cd11819, SH3_Cortactin_like, Src homology 3 domain of Cortactin and
related proteins. This subfamily includes cortactin,
Abp1 (actin-binding protein 1), hematopoietic lineage
cell-specific protein 1 (HS1), and similar proteins.
These proteins are involved in regulating actin dynamics
through direct or indirect interaction with the Arp2/3
complex, which is required to initiate actin
polymerization. They all contain at least one C-terminal
SH3 domain. Cortactin and HS1 bind Arp2/3 and actin
through an N-terminal region that contains an acidic
domain and several copies of a repeat domain found in
cortactin and HS1. Abp1 binds actin via an N-terminal
actin-depolymerizing factor (ADF) homology domain. Yeast
Abp1 binds Arp2/3 directly through two acidic domains.
Mammalian Abp1 does not directly interact with Arp2/3;
instead, it regulates actin dynamics indirectly by
interacting with dynamin and WASP family proteins. The
C-terminal region of these proteins acts as an adaptor
or scaffold that can connect membrane trafficking and
signaling proteins that bind the SH3 domain within the
actin network. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP motifs.
They play versatile and diverse roles in the cell
including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 54
Score = 47.3 bits (113), Expect = 1e-07
Identities = 16/50 (32%), Positives = 28/50 (56%), Gaps = 2/50 (4%)
Query: 107 IAAYPYDSTEPGDLTFNQDEVIY-VTKKENDWWTGTIGD-RTGLFPSNYV 154
A Y Y + E +++F + ++I + + + WW G + GLFP+NYV
Sbjct: 3 KALYDYQAAEDNEISFVEGDIITQIEQIDEGWWLGVNAKGQKGLFPANYV 52
Score = 43.5 bits (103), Expect = 3e-06
Identities = 22/53 (41%), Positives = 32/53 (60%), Gaps = 3/53 (5%)
Query: 42 RAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELR-GQTGWFPESYVE 93
+A+Y++ + +E+SF GDII ++Q E GW G GQ G FP +YVE
Sbjct: 3 KALYDYQAAEDNEISFVEGDII-TQIEQIDE-GWWLGVNAKGQKGLFPANYVE 53
Score = 41.5 bits (98), Expect = 1e-05
Identities = 21/56 (37%), Positives = 29/56 (51%), Gaps = 4/56 (7%)
Query: 221 ATVLAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVK 276
A L Y A ++S G +I ++ GWW G AKG+K G FPA+YV+
Sbjct: 2 AKALYDYQAAEDNEISFVEGDIITQIEQIDEGWWLGVN-AKGQK---GLFPANYVE 53
>gnl|CDD|212997 cd12064, SH3_GRAF, Src Homology 3 domain of GTPase Regulator
Associated with Focal adhesion kinase. GRAF, also
called Rho GTPase activating protein 26 (ARHGAP26),
Oligophrenin-1-like (OPHN1L) or GRAF1, is a GAP with
activity towards RhoA and Cdc42 and is only weakly
active towards Rac1. It influences Rho-mediated
cytoskeletal rearrangements and binds focal adhesion
kinase (FAK), which is a critical component of integrin
signaling. It is essential for the major
clathrin-independent endocytic pathway mediated by
pleiomorphic membranes. GRAF contains an N-terminal BAR
domain, followed by a Pleckstrin homology (PH) domain,
a Rho GAP domain, and a C-terminal SH3 domain. The SH3
domain of GRAF binds PKNbeta, a target of the small
GTPase Rho. SH3 domains bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs; they play a role in the regulation of
enzymes by intramolecular interactions, changing the
subcellular localization of signal pathway components
and mediate multiprotein complex assemblies.
Length = 56
Score = 47.0 bits (111), Expect = 1e-07
Identities = 24/55 (43%), Positives = 33/55 (60%), Gaps = 1/55 (1%)
Query: 39 RRYRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVE 93
R+ +A+Y + + ELSF G + V + EPGWL G L G+TG PE+YVE
Sbjct: 1 RKAKALYACKAEHDSELSFTAG-TVFDNVHPSQEPGWLEGTLNGKTGLIPENYVE 54
Score = 28.2 bits (62), Expect = 0.96
Identities = 11/22 (50%), Positives = 14/22 (63%)
Query: 133 KENDWWTGTIGDRTGLFPSNYV 154
+E W GT+ +TGL P NYV
Sbjct: 32 QEPGWLEGTLNGKTGLIPENYV 53
>gnl|CDD|212829 cd11896, SH3_SNX33, Src Homology 3 domain of Sorting Nexin 33.
SNX33 interacts with Wiskott-Aldrich syndrome protein
(WASP) and plays a role in the maintenance of cell
shape and cell cycle progression. It modulates the
shedding and endocytosis of cellular prion protein
(PrP(c)) and amyloid precursor protein (APP). SNXs are
Phox homology (PX) domain containing proteins that are
involved in regulating membrane traffic and protein
sorting in the endosomal system. SNX33 also contains
BAR and SH3 domains. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles
in the cell including the regulation of enzymes,
changing the subcellular localization of signaling
pathway components, and mediating the formation of
multiprotein complex assemblies.
Length = 55
Score = 46.9 bits (111), Expect = 1e-07
Identities = 23/55 (41%), Positives = 36/55 (65%), Gaps = 2/55 (3%)
Query: 40 RYRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGE-LRGQTGWFPESYVE 93
+ RA+Y F S N +E++ Q + +++ +N+ GWL G+ RG+TG FP SYVE
Sbjct: 1 KARALYSFQSENKEEINIQENEELVI-FSENSLDGWLQGQNSRGETGLFPASYVE 54
Score = 30.3 bits (68), Expect = 0.16
Identities = 15/58 (25%), Positives = 32/58 (55%), Gaps = 5/58 (8%)
Query: 221 ATVLAPYTATSSEQLSLSRGQ-LIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVKV 277
A L + + + E++++ + L++ + + GW LQ + + + G FPASYV++
Sbjct: 2 ARALYSFQSENKEEINIQENEELVIFSENSLDGW----LQGQNSRGETGLFPASYVEI 55
>gnl|CDD|212987 cd12054, SH3_CD2AP_2, Second Src Homology 3 domain (SH3B) of
CD2-associated protein. CD2AP, also called CMS (Cas
ligand with Multiple SH3 domains) or METS1
(Mesenchyme-to-Epithelium Transition protein with SH3
domains), is a cytosolic adaptor protein that plays a
role in regulating the cytoskeleton. It is critical in
cell-to-cell union necessary for kidney function. It
also stabilizes the contact between a T cell and
antigen-presenting cells. It is primarily expressed in
podocytes at the cytoplasmic face of the slit diaphragm
and serves as a linker anchoring podocin and nephrin to
the actin cytoskeleton. CD2AP contains three SH3
domains, a proline-rich region, and a C-terminal
coiled-coil domain. All of these domains enable CD2AP
to bind various protein partners and assemble complexes
that have been implicated in many different functions.
This alignment model represents the second SH3 domain
(SH3B) of CD2AP. SH3B binds to c-Cbl in a site
(TPSSRPLR is the core binding motif) distinct from the
c-Cbl/SH3A binding site. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles
in the cell including the regulation of enzymes,
changing the subcellular localization of signaling
pathway components, and mediating the formation of
multiprotein complex assemblies.
Length = 55
Score = 46.9 bits (111), Expect = 2e-07
Identities = 21/55 (38%), Positives = 36/55 (65%), Gaps = 2/55 (3%)
Query: 39 RRYRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVE 93
R+ + ++E+V +N DEL + GDII + + E GW +G L G++G FP ++V+
Sbjct: 1 RQCKVLFEYVPQNEDELELKVGDII--DINEEVEEGWWSGTLNGKSGLFPSNFVK 53
Score = 38.8 bits (90), Expect = 1e-04
Identities = 15/46 (32%), Positives = 27/46 (58%), Gaps = 1/46 (2%)
Query: 110 YPYDSTEPGDLTFNQDEVIYVTKK-ENDWWTGTIGDRTGLFPSNYV 154
+ Y +L ++I + ++ E WW+GT+ ++GLFPSN+V
Sbjct: 7 FEYVPQNEDELELKVGDIIDINEEVEEGWWSGTLNGKSGLFPSNFV 52
Score = 37.3 bits (86), Expect = 5e-04
Identities = 19/54 (35%), Positives = 28/54 (51%), Gaps = 5/54 (9%)
Query: 223 VLAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVK 276
VL Y + ++L L G +I I ++ GWW G L K G FP+++VK
Sbjct: 5 VLFEYVPQNEDELELKVGDIIDINEEVEEGWWSGTLNGKS-----GLFPSNFVK 53
>gnl|CDD|212881 cd11948, SH3_GRAP_N, N-terminal Src homology 3 domain of
GRB2-related adaptor protein. GRAP is a GRB-2 like
adaptor protein that is highly expressed in lymphoid
tissues. It acts as a negative regulator of T cell
receptor (TCR)-induced lymphocyte proliferation by
downregulating the signaling to the Ras/ERK pathway. It
has been identified as a regulator of TGFbeta signaling
in diabetic kidney tubules and may have a role in the
pathogenesis of the disease. GRAP contains an
N-terminal SH3 domain, a central SH2 domain, and a
C-terminal SH3 domain. The N-terminal SH3 domain of the
related protein GRB2 binds to Sos and Sos-derived
proline-rich peptides. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles
in the cell including the regulation of enzymes,
changing the subcellular localization of signaling
pathway components, and mediating the formation of
multiprotein complex assemblies.
Length = 54
Score = 46.7 bits (111), Expect = 2e-07
Identities = 18/51 (35%), Positives = 31/51 (60%), Gaps = 1/51 (1%)
Query: 43 AIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVE 93
A+Y F + DEL FQ GDI+ + + + W EL+G+ G+ P++Y++
Sbjct: 4 ALYSFQATESDELPFQKGDILKI-LNMEDDQNWYKAELQGREGYIPKNYIK 53
Score = 38.6 bits (90), Expect = 1e-04
Identities = 14/50 (28%), Positives = 27/50 (54%), Gaps = 2/50 (4%)
Query: 107 IAAYPYDSTEPGDLTFNQDEVIYVTKKEND--WWTGTIGDRTGLFPSNYV 154
+A Y + +TE +L F + +++ + E+D W+ + R G P NY+
Sbjct: 3 VALYSFQATESDELPFQKGDILKILNMEDDQNWYKAELQGREGYIPKNYI 52
>gnl|CDD|212696 cd11762, SH3_FCHSD_2, Second Src Homology 3 domain of FCH and
double SH3 domains proteins. This group is composed of
FCH and double SH3 domains protein 1 (FCHSD1) and
FCHSD2. These proteins have a common domain structure
consisting of an N-terminal F-BAR (FES-CIP4 Homology and
Bin/Amphiphysin/Rvs), two SH3, and C-terminal
proline-rich domains. They have only been characterized
in silico and their functions remain unknown. This group
also includes the insect protein, nervous wreck, which
acts as a regulator of synaptic growth signaling. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 57
Score = 46.6 bits (111), Expect = 2e-07
Identities = 15/49 (30%), Positives = 27/49 (55%), Gaps = 5/49 (10%)
Query: 108 AAYPYDSTEPGDLTFNQDEVIYVTKKEND-----WWTGTIGDRTGLFPS 151
A Y Y++ +L+F + +I + +K+++ WW G R G+FPS
Sbjct: 4 ALYDYEAQSDEELSFPEGAIIRILRKDDNGVDDGWWEGEFNGRVGVFPS 52
Score = 42.8 bits (101), Expect = 6e-06
Identities = 21/54 (38%), Positives = 32/54 (59%), Gaps = 2/54 (3%)
Query: 42 RAIYEFVSRNGDELSFQPGDIIMVPVKQN--AEPGWLAGELRGQTGWFPESYVE 93
RA+Y++ +++ +ELSF G II + K + + GW GE G+ G FP VE
Sbjct: 3 RALYDYEAQSDEELSFPEGAIIRILRKDDNGVDDGWWEGEFNGRVGVFPSLVVE 56
Score = 36.6 bits (85), Expect = 7e-04
Identities = 21/53 (39%), Positives = 26/53 (49%), Gaps = 9/53 (16%)
Query: 227 YTATSSEQLSLSRGQLIMIRKKTTT----GWWEGELQAKGKKRQVGWFPASYV 275
Y A S E+LS G +I I +K GWWEGE + VG FP+ V
Sbjct: 8 YEAQSDEELSFPEGAIIRILRKDDNGVDDGWWEGEFNGR-----VGVFPSLVV 55
>gnl|CDD|212820 cd11887, SH3_Bbc1, Src Homology 3 domain of Bbc1 and similar
domains. This subfamily is composed of Saccharomyces
cerevisiae Bbc1p, also called Mti1p (Myosin tail
region-interacting protein), and similar proteins. Bbc1p
interacts with and regulates type I myosins in yeast,
Myo3p and Myo5p, which are involved in actin
cytoskeletal reorganization. It also binds and inhibits
Las17, a WASp family protein that functions as an
activator of the Arp2/3 complex. Bbc1p contains an
N-terminal SH3 domain. SH3 domains bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs; they play a role in the
regulation of enzymes by intramolecular interactions,
changing the subcellular localization of signal pathway
components and mediate multiprotein complex assemblies.
Length = 60
Score = 46.6 bits (111), Expect = 2e-07
Identities = 21/54 (38%), Positives = 31/54 (57%), Gaps = 6/54 (11%)
Query: 107 IAAYPYDSTEPGDLTFNQDEVIYVTKKE-NDWWTGTIGD-----RTGLFPSNYV 154
A YPY+S DL F+ ++I VT++E DW+ G D + G+FP N+V
Sbjct: 5 KALYPYESDHEDDLNFDVGQLITVTEEEDADWYFGEYVDSNGNTKEGIFPKNFV 58
Score = 35.0 bits (81), Expect = 0.003
Identities = 18/60 (30%), Positives = 34/60 (56%), Gaps = 7/60 (11%)
Query: 40 RYRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRG-----QTGWFPESYVEP 94
+ +A+Y + S + D+L+F G +I V +++A+ W GE + G FP+++VE
Sbjct: 3 KVKALYPYESDHEDDLNFDVGQLITVTEEEDAD--WYFGEYVDSNGNTKEGIFPKNFVEV 60
Score = 31.9 bits (73), Expect = 0.040
Identities = 15/52 (28%), Positives = 26/52 (50%)
Query: 226 PYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVKV 277
PY + + L+ GQLI + ++ W+ GE + G FP ++V+V
Sbjct: 9 PYESDHEDDLNFDVGQLITVTEEEDADWYFGEYVDSNGNTKEGIFPKNFVEV 60
>gnl|CDD|212986 cd12053, SH3_CD2AP_1, First Src Homology 3 domain (SH3A) of
CD2-associated protein. CD2AP, also called CMS (Cas
ligand with Multiple SH3 domains) or METS1
(Mesenchyme-to-Epithelium Transition protein with SH3
domains), is a cytosolic adaptor protein that plays a
role in regulating the cytoskeleton. It is critical in
cell-to-cell union necessary for kidney function. It
also stabilizes the contact between a T cell and
antigen-presenting cells. It is primarily expressed in
podocytes at the cytoplasmic face of the slit diaphragm
and serves as a linker anchoring podocin and nephrin to
the actin cytoskeleton. CD2AP contains three SH3
domains, a proline-rich region, and a C-terminal
coiled-coil domain. All of these domains enable CD2AP
to bind various protein partners and assemble complexes
that have been implicated in many different functions.
This alignment model represents the first SH3 domain
(SH3A) of CD2AP. SH3A binds to the PXXXPR motif present
in c-Cbl and the cytoplasmic domain of cell adhesion
protein CD2. Its interaction with CD2 anchors CD2 at
sites of cell contact. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles
in the cell including the regulation of enzymes,
changing the subcellular localization of signaling
pathway components, and mediating the formation of
multiprotein complex assemblies.
Length = 56
Score = 46.4 bits (110), Expect = 2e-07
Identities = 21/49 (42%), Positives = 34/49 (69%), Gaps = 1/49 (2%)
Query: 45 YEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVE 93
Y++ + + DEL+ + G+II VK+ E GWL GEL G+ G FP+++V+
Sbjct: 6 YDYDAVHEDELTIRVGEIIR-NVKKLEEEGWLEGELNGRRGMFPDNFVK 53
Score = 39.1 bits (91), Expect = 1e-04
Identities = 20/51 (39%), Positives = 26/51 (50%), Gaps = 2/51 (3%)
Query: 106 YIAAYPYDSTEPGDLTFNQDEVIYVTKK--ENDWWTGTIGDRTGLFPSNYV 154
YI Y YD+ +LT E+I KK E W G + R G+FP N+V
Sbjct: 2 YIVEYDYDAVHEDELTIRVGEIIRNVKKLEEEGWLEGELNGRRGMFPDNFV 52
Score = 32.5 bits (74), Expect = 0.020
Identities = 18/51 (35%), Positives = 30/51 (58%), Gaps = 6/51 (11%)
Query: 227 YTATSSEQLSLSRGQLIM-IRKKTTTGWWEGELQAKGKKRQVGWFPASYVK 276
Y A ++L++ G++I ++K GW EGEL G++ G FP ++VK
Sbjct: 8 YDAVHEDELTIRVGEIIRNVKKLEEEGWLEGELN--GRR---GMFPDNFVK 53
>gnl|CDD|212884 cd11951, SH3_GRAP_C, C-terminal Src homology 3 domain of
GRB2-related adaptor protein. GRAP is a GRB-2 like
adaptor protein that is highly expressed in lymphoid
tissues. It acts as a negative regulator of T cell
receptor (TCR)-induced lymphocyte proliferation by
downregulating the signaling to the Ras/ERK pathway. It
has been identified as a regulator of TGFbeta signaling
in diabetic kidney tubules and may have a role in the
pathogenesis of the disease. GRAP contains an
N-terminal SH3 domain, a central SH2 domain, and a
C-terminal SH3 domain. The C-terminal SH3 domains
(SH3c) of the related proteins, GRB2 and GRAP2, have
been shown to bind to classical PxxP motif ligands, as
well as to non-classical motifs. GRB2 SH3c binds Gab2
(Grb2-associated binder 2) through epitopes containing
RxxK motifs, while the SH3c of GRAP2 binds to the
phosphatase-like protein HD-PTP via a RxxxxK motif. SH3
domains are protein interaction domains that typically
bind to proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 53
Score = 46.3 bits (110), Expect = 2e-07
Identities = 21/53 (39%), Positives = 32/53 (60%), Gaps = 2/53 (3%)
Query: 42 RAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVEP 94
+A Y+F + + +LSF+ GDII V +P W G + G+ G+FP +YV P
Sbjct: 3 QAQYDFSAEDPSQLSFRRGDII--EVLDCPDPNWWRGRISGRVGFFPRNYVHP 53
Score = 45.2 bits (107), Expect = 7e-07
Identities = 19/50 (38%), Positives = 28/50 (56%), Gaps = 1/50 (2%)
Query: 108 AAYPYDSTEPGDLTFNQDEVIYVTKKEN-DWWTGTIGDRTGLFPSNYVVP 156
A Y + + +P L+F + ++I V + +WW G I R G FP NYV P
Sbjct: 4 AQYDFSAEDPSQLSFRRGDIIEVLDCPDPNWWRGRISGRVGFFPRNYVHP 53
Score = 33.6 bits (77), Expect = 0.009
Identities = 16/49 (32%), Positives = 24/49 (48%), Gaps = 5/49 (10%)
Query: 227 YTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYV 275
++A QLS RG +I + WW G + + VG+FP +YV
Sbjct: 8 FSAEDPSQLSFRRGDIIEVLDCPDPNWWRGRISGR-----VGFFPRNYV 51
>gnl|CDD|212905 cd11972, SH3_Abi2, Src homology 3 domain of Abl Interactor 2.
Abi2 is highly expressed in the brain and eye. It
regulates actin cytoskeletal reorganization at adherens
junctions and dendritic spines, which is important in
cell morphogenesis, migration, and cognitive function.
Mice deficient with Abi2 show defects in orientation
and migration of lens fibers, neuronal migration,
dendritic spine morphology, as well as deficits in
learning and memory. Abi proteins are adaptor proteins
serving as binding partners and substrates of Abl
tyrosine kinases. They are involved in regulating actin
cytoskeletal reorganization and play important roles in
membrane-ruffling, endocytosis, cell motility, and cell
migration. Abi proteins contain a homeobox homology
domain, a proline-rich region, and a SH3 domain. The
SH3 domain of Abi binds to a PxxP motif in Abl. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 61
Score = 46.5 bits (110), Expect = 2e-07
Identities = 26/51 (50%), Positives = 33/51 (64%), Gaps = 2/51 (3%)
Query: 43 AIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVE 93
AIY++ DELSFQ G II V +K+N + GW G + G TG FP +YVE
Sbjct: 7 AIYDYTKDKEDELSFQEGAIIYV-IKKN-DDGWYEGVMNGVTGLFPGNYVE 55
Score = 45.8 bits (108), Expect = 5e-07
Identities = 22/52 (42%), Positives = 31/52 (59%), Gaps = 1/52 (1%)
Query: 104 EYYIAAYPYDSTEPGDLTFNQDEVIYVTKKEND-WWTGTIGDRTGLFPSNYV 154
E +A Y Y + +L+F + +IYV KK +D W+ G + TGLFP NYV
Sbjct: 3 EKVVAIYDYTKDKEDELSFQEGAIIYVIKKNDDGWYEGVMNGVTGLFPGNYV 54
Score = 34.2 bits (78), Expect = 0.006
Identities = 17/54 (31%), Positives = 26/54 (48%), Gaps = 5/54 (9%)
Query: 227 YTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVKVMGG 280
YT ++LS G +I + KK GW+EG + G FP +YV+ +
Sbjct: 11 YTKDKEDELSFQEGAIIYVIKKNDDGWYEGVMNG-----VTGLFPGNYVESIMH 59
>gnl|CDD|212798 cd11864, SH3_PEX13_eumet, Src Homology 3 domain of eumetazoan
Peroxisomal biogenesis factor 13. PEX13 is a peroxin
and is required for protein import into the peroxisomal
matrix and membrane. It is an integral membrane protein
that is essential for the localization of PEX14 and the
import of proteins containing the peroxisome matrix
targeting signals, PTS1 and PTS2. Mutations of the
PEX13 gene in humans lead to a wide range of peroxisome
biogenesis disorders (PBDs), the most severe of which
is known as Zellweger syndrome (ZS), a severe
multisystem disorder characterized by hypotonia,
psychomotor retardation, and neuronal migration
defects. PEX13 contains two transmembrane regions and a
C-terminal SH3 domain. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles
in the cell including the regulation of enzymes,
changing the subcellular localization of signaling
pathway components, and mediating the formation of
multiprotein complex assemblies.
Length = 58
Score = 46.1 bits (110), Expect = 3e-07
Identities = 23/55 (41%), Positives = 32/55 (58%), Gaps = 3/55 (5%)
Query: 42 RAIYEFVSRNGDELSFQPGDIIMVPVK--QNAEPGWLAGELRGQT-GWFPESYVE 93
RA Y+FV+ + DELSF+ GD + + K Q GWL + GQ G P +YV+
Sbjct: 3 RAEYDFVAESEDELSFRAGDKLRLAPKELQPRVRGWLLATVDGQKIGLVPANYVK 57
Score = 33.0 bits (76), Expect = 0.014
Identities = 16/62 (25%), Positives = 27/62 (43%), Gaps = 8/62 (12%)
Query: 220 IATVLAPYTATSSEQLSLSRGQLIMIRKKT----TTGWWEGELQAKGKKRQVGWFPASYV 275
+A + A S ++LS G + + K GW L ++ +G PA+YV
Sbjct: 1 VARAEYDFVAESEDELSFRAGDKLRLAPKELQPRVRGWL---LATVDGQK-IGLVPANYV 56
Query: 276 KV 277
K+
Sbjct: 57 KI 58
Score = 27.6 bits (62), Expect = 1.2
Identities = 14/54 (25%), Positives = 24/54 (44%), Gaps = 6/54 (11%)
Query: 107 IAAYPYDSTEPGDLTFNQDEVIYVTKKE-----NDWWTGTIGD-RTGLFPSNYV 154
A Y + + +L+F + + + KE W T+ + GL P+NYV
Sbjct: 3 RAEYDFVAESEDELSFRAGDKLRLAPKELQPRVRGWLLATVDGQKIGLVPANYV 56
>gnl|CDD|212873 cd11940, SH3_ARHGEF5_19, Src homology 3 domain of the Rho guanine
nucleotide exchange factors ARHGEF5 and ARHGEF19.
ARHGEF5, also called ephexin-3 or TIM (Transforming
immortalized mammary oncogene), is a potent activator
of RhoA and it plays roles in regulating cell shape,
adhesion, and migration. It binds to the SH3 domain of
Src and is involved in regulating Src-induced podosome
formation. ARHGEF19, also called ephexin-2 or WGEF
(weak-similarity GEF), is highly expressed in the
intestine, liver, heart and kidney. It activates RhoA,
Cdc42, and Rac 1, and has been shown to activate RhoA
in the Wnt-PCP (planar cell polarity) pathway. It is
involved in the regulation of cell polarity and
cytoskeletal reorganization. ARHGEF5 and ARHGEF19
contain RhoGEF (also called Dbl-homologous or DH),
Pleckstrin Homology (PH), and SH3 domains. The SH3
domains of ARHGEFs play an autoinhibitory role through
intramolecular interactions with a proline-rich region
N-terminal to the DH domain. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles
in the cell including the regulation of enzymes,
changing the subcellular localization of signaling
pathway components, and mediating the formation of
multiprotein complex assemblies.
Length = 55
Score = 45.9 bits (109), Expect = 3e-07
Identities = 23/54 (42%), Positives = 34/54 (62%), Gaps = 6/54 (11%)
Query: 44 IYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELR---GQTGWFPESYVEP 94
I + ++ DEL+ + DIIMV +Q + GWL G +R G+ GWFP+S+VE
Sbjct: 5 IRSYKAQENDELTLEKADIIMV--RQQSSDGWLEG-VRLSDGERGWFPQSHVEE 55
Score = 42.5 bits (100), Expect = 7e-06
Identities = 18/50 (36%), Positives = 34/50 (68%), Gaps = 3/50 (6%)
Query: 227 YTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVK 276
Y A +++L+L + +IM+R++++ GW EG + G++ GWFP S+V+
Sbjct: 8 YKAQENDELTLEKADIIMVRQQSSDGWLEGVRLSDGER---GWFPQSHVE 54
Score = 27.1 bits (60), Expect = 2.1
Identities = 14/46 (30%), Positives = 25/46 (54%), Gaps = 3/46 (6%)
Query: 112 YDSTEPGDLTFNQDEVIYVTKKEND-WWTGT-IGDR-TGLFPSNYV 154
Y + E +LT + ++I V ++ +D W G + D G FP ++V
Sbjct: 8 YKAQENDELTLEKADIIMVRQQSSDGWLEGVRLSDGERGWFPQSHV 53
>gnl|CDD|212740 cd11806, SH3_PRMT2, Src homology 3 domain of Protein arginine
N-methyltransferase 2. PRMT2, also called HRMT1L1,
belongs to the arginine methyltransferase protein
family. It functions as a coactivator to both estrogen
receptor alpha (ER-alpha) and androgen receptor (AR),
presumably through arginine methylation. The ER-alpha
transcription factor is involved in cell proliferation,
differentiation, morphogenesis, and apoptosis, and is
also implicated in the development and progression of
breast cancer. PRMT2 and its variants are upregulated in
breast cancer cells and may be involved in modulating
the ER-alpha signaling pathway during formation of
breast cancer. PRMT2 also plays a role in regulating the
function of E2F transcription factors, which are
critical cell cycle regulators, by binding to the
retinoblastoma gene product (RB). It contains an
N-terminal SH3 domain and an AdoMet binding domain. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 53
Score = 45.8 bits (109), Expect = 4e-07
Identities = 15/56 (26%), Positives = 25/56 (44%), Gaps = 5/56 (8%)
Query: 220 IATVLAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYV 275
+A + AT QLS G +++ +K + WW E G+ PAS++
Sbjct: 1 EYVAIADFVATDDSQLSFESGDKLLVLRKPSVDWWWAEHNG-----CCGYIPASHL 51
Score = 41.6 bits (98), Expect = 1e-05
Identities = 18/54 (33%), Positives = 30/54 (55%), Gaps = 2/54 (3%)
Query: 41 YRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVEP 94
Y AI +FV+ + +LSF+ GD ++V K + + W E G G+ P S++
Sbjct: 2 YVAIADFVATDDSQLSFESGDKLLVLRKPSVD--WWWAEHNGCCGYIPASHLHQ 53
Score = 32.0 bits (73), Expect = 0.033
Identities = 12/52 (23%), Positives = 25/52 (48%), Gaps = 1/52 (1%)
Query: 106 YIAAYPYDSTEPGDLTFNQDEVIYVTKKEN-DWWTGTIGDRTGLFPSNYVVP 156
Y+A + +T+ L+F + + V +K + DWW G P++++
Sbjct: 2 YVAIADFVATDDSQLSFESGDKLLVLRKPSVDWWWAEHNGCCGYIPASHLHQ 53
>gnl|CDD|212763 cd11829, SH3_GAS7, Src homology 3 domain of Growth Arrest
Specific protein 7. GAS7 is mainly expressed in the
brain and is required for neurite outgrowth. It may
also play a role in the protection and migration of
embryonic stem cells. Treatment-related acute myeloid
leukemia (AML) has been reported resulting from
mixed-lineage leukemia (MLL)-GAS7 translocations as a
complication of primary cancer treatment. GAS7 contains
an N-terminal SH3 domain, followed by a WW domain, and
a central F-BAR domain. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles
in the cell including the regulation of enzymes,
changing the subcellular localization of signaling
pathway components, and mediating the formation of
multiprotein complex assemblies.
Length = 52
Score = 46.0 bits (109), Expect = 4e-07
Identities = 22/54 (40%), Positives = 28/54 (51%), Gaps = 3/54 (5%)
Query: 40 RYRAIYEFVSRNGDE-LSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYV 92
R +Y F + LSF+ G++I V Q + GW GE G GWFP SYV
Sbjct: 1 LCRTLYAFTGEQHQQGLSFEAGELIRV--LQAPDGGWWEGEKDGLRGWFPASYV 52
Score = 39.4 bits (92), Expect = 8e-05
Identities = 23/53 (43%), Positives = 28/53 (52%), Gaps = 6/53 (11%)
Query: 224 LAPYTATSSEQ-LSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYV 275
L +T +Q LS G+LI + + GWWEGE K GWFPASYV
Sbjct: 5 LYAFTGEQHQQGLSFEAGELIRVLQAPDGGWWEGE-----KDGLRGWFPASYV 52
Score = 25.6 bits (56), Expect = 5.9
Identities = 13/36 (36%), Positives = 19/36 (52%), Gaps = 1/36 (2%)
Query: 120 LTFNQDEVIYVTKK-ENDWWTGTIGDRTGLFPSNYV 154
L+F E+I V + + WW G G FP++YV
Sbjct: 17 LSFEAGELIRVLQAPDGGWWEGEKDGLRGWFPASYV 52
>gnl|CDD|212700 cd11766, SH3_Nck_2, Second Src Homology 3 domain of Nck adaptor
proteins. Nck adaptor proteins regulate actin
cytoskeleton dynamics by linking proline-rich effector
molecules to protein tyrosine kinases and phosphorylated
signaling intermediates. They contain three SH3 domains
and a C-terminal SH2 domain. They function downstream of
the PDGFbeta receptor and are involved in Rho GTPase
signaling and actin dynamics. Vertebrates contain two
Nck adaptor proteins: Nck1 (also called Nckalpha) and
Nck2 (also called Nckbeta or Growth factor
receptor-bound protein 4, Grb4), which show partly
overlapping functions but also bind distinct targets.
Their SH3 domains are involved in recruiting downstream
effector molecules, such as the N-WASP/Arp2/3 complex,
which when activated induces actin polymerization that
results in the production of pedestals, or protrusions
of the plasma membrane. The second SH3 domain of Nck
appears to prefer ligands containing the APxxPxR motif.
SH3 domains are protein interaction domains that usually
bind to proline-rich ligands with moderate affinity and
selectivity, preferentially a PxxP motif. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 53
Score = 45.7 bits (109), Expect = 4e-07
Identities = 20/49 (40%), Positives = 31/49 (63%), Gaps = 5/49 (10%)
Query: 227 YTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYV 275
Y A ++LSL +G +++ +K++ GWW GE QVGWFP++YV
Sbjct: 8 YEAQREDELSLRKGDRVLVLEKSSDGWWRGECNG-----QVGWFPSNYV 51
Score = 44.6 bits (106), Expect = 1e-06
Identities = 15/52 (28%), Positives = 27/52 (51%), Gaps = 1/52 (1%)
Query: 106 YIAAYPYDSTEPGDLTFNQDEVIYVTKKEND-WWTGTIGDRTGLFPSNYVVP 156
+ + Y++ +L+ + + + V +K +D WW G + G FPSNYV
Sbjct: 2 AVVKFNYEAQREDELSLRKGDRVLVLEKSSDGWWRGECNGQVGWFPSNYVTE 53
Score = 43.8 bits (104), Expect = 2e-06
Identities = 20/55 (36%), Positives = 29/55 (52%), Gaps = 2/55 (3%)
Query: 40 RYRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVEP 94
+ + ++ DELS + GD ++V K + GW GE GQ GWFP +YV
Sbjct: 1 PAVVKFNYEAQREDELSLRKGDRVLVLEK--SSDGWWRGECNGQVGWFPSNYVTE 53
>gnl|CDD|212802 cd11869, SH3_p40phox, Src Homology 3 domain of the p40phox
subunit of NADPH oxidase. p40phox, also called
Neutrophil cytosol factor 4 (NCF-4), is a cytosolic
subunit of the phagocytic NADPH oxidase complex (also
called Nox2 or gp91phox) which plays a crucial role in
the cellular response to bacterial infection. NADPH
oxidase catalyzes the transfer of electrons from NADPH
to oxygen during phagocytosis forming superoxide and
reactive oxygen species. p40phox positively regulates
NADPH oxidase in both phosphatidylinositol-3-phosphate
(PI3P)-dependent and PI3P-independent manner. It
contains an N-terminal PX domain, a central SH3 domain,
and a C-terminal PB1 domain that interacts with
p67phox. The SH3 domain of p40phox binds to canonical
polyproline and noncanonical motifs at the C-terminus
of p47phox. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP
motifs. They play versatile and diverse roles in the
cell including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 54
Score = 45.9 bits (109), Expect = 4e-07
Identities = 21/54 (38%), Positives = 34/54 (62%), Gaps = 2/54 (3%)
Query: 40 RYRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVE 93
R A+++F + EL+F+ GD+I + + N + WL G +RG TG FP S+V+
Sbjct: 1 RAEALFDFTGNSKLELNFKAGDVIFLLSRVNKD--WLEGTVRGATGIFPLSFVK 52
Score = 41.3 bits (97), Expect = 1e-05
Identities = 15/48 (31%), Positives = 26/48 (54%), Gaps = 1/48 (2%)
Query: 108 AAYPYDSTEPGDLTFNQDEVIYVTKKEN-DWWTGTIGDRTGLFPSNYV 154
A + + +L F +VI++ + N DW GT+ TG+FP ++V
Sbjct: 4 ALFDFTGNSKLELNFKAGDVIFLLSRVNKDWLEGTVRGATGIFPLSFV 51
Score = 34.4 bits (79), Expect = 0.004
Identities = 16/58 (27%), Positives = 27/58 (46%), Gaps = 5/58 (8%)
Query: 221 ATVLAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVKVM 278
A L +T S +L+ G +I + + W EG ++ G FP S+VK++
Sbjct: 2 AEALFDFTGNSKLELNFKAGDVIFLLSRVNKDWLEGTVRGA-----TGIFPLSFVKII 54
>gnl|CDD|212730 cd11796, SH3_DNMBP_N3, Third N-terminal Src homology 3 domain of
Dynamin Binding Protein, also called Tuba. DNMBP or
Tuba is a cdc42-specific guanine nucleotide exchange
factor (GEF) that contains four N-terminal SH3 domains,
a central RhoGEF [or Dbl homology (DH)] domain followed
by a Bin/Amphiphysin/Rvs (BAR) domain, and two
C-terminal SH3 domains. It provides a functional link
between dynamin and key regulatory proteins of the
actin cytoskeleton. It plays an important role in
regulating cell junction configuration. The four
N-terminal SH3 domains of DNMBP binds the GTPase
dynamin, which plays an important role in the fission
of endocytic vesicles. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles
in the cell including the regulation of enzymes,
changing the subcellular localization of signaling
pathway components, and mediating the formation of
multiprotein complex assemblies.
Length = 51
Score = 45.4 bits (108), Expect = 5e-07
Identities = 16/53 (30%), Positives = 29/53 (54%), Gaps = 2/53 (3%)
Query: 40 RYRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYV 92
+ R + + ++ +EL + GD++ + + GW GEL G+ G FPE +V
Sbjct: 1 QARVLQDLSAQLDEELDLREGDVVTI--TGILDKGWFRGELNGRRGIFPEGFV 51
Score = 36.6 bits (85), Expect = 8e-04
Identities = 10/39 (25%), Positives = 20/39 (51%), Gaps = 1/39 (2%)
Query: 117 PGDLTFNQDEVIYVTK-KENDWWTGTIGDRTGLFPSNYV 154
+L + +V+ +T + W+ G + R G+FP +V
Sbjct: 13 DEELDLREGDVVTITGILDKGWFRGELNGRRGIFPEGFV 51
Score = 33.9 bits (78), Expect = 0.006
Identities = 18/55 (32%), Positives = 25/55 (45%), Gaps = 5/55 (9%)
Query: 221 ATVLAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYV 275
A VL +A E+L L G ++ I GW+ GEL + G FP +V
Sbjct: 2 ARVLQDLSAQLDEELDLREGDVVTITGILDKGWFRGELNGR-----RGIFPEGFV 51
>gnl|CDD|212868 cd11935, SH3_Nebulette_C, C-terminal Src Homology 3 domain of
Nebulette and LIM-nebulette (or Lasp2). Nebulette is a
cardiac-specific protein that localizes to the Z-disc.
It interacts with tropomyosin and is important in
stabilizing actin thin filaments in cardiac muscles.
Polymorphisms in the nebulette gene are associated with
dilated cardiomyopathy, with some mutations resulting
in severe heart failure. Nebulette is a 107kD protein
that contains an N-terminal acidic region, multiple
nebulin repeats, and a C-terminal SH3 domain.
LIM-nebulette, also called Lasp2 (LIM and SH3 domain
protein 2), is an alternatively spliced variant of
nebulette. Although it shares a gene with nebulette,
Lasp2 is not transcribed from a muscle-specific
promoter, giving rise to its multiple tissue expression
pattern with highest amounts in the brain. It can
crosslink actin filaments and it affects cell
spreading. Lasp2 is a 34kD protein containing an
N-terminal LIM domain, three nebulin repeats, and a
C-terminal SH3 domain. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles
in the cell including the regulation of enzymes,
changing the subcellular localization of signaling
pathway components, and mediating the formation of
multiprotein complex assemblies.
Length = 58
Score = 45.8 bits (108), Expect = 5e-07
Identities = 23/60 (38%), Positives = 38/60 (63%), Gaps = 10/60 (16%)
Query: 39 RRYRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEP---GWLAGELR--GQTGWFPESYVE 93
R YRA+Y++ +++ DE+SF+ GD I N +P GW+ G ++ G+TG P +Y+E
Sbjct: 1 RTYRAMYDYSAQDEDEVSFRDGDYI-----VNVQPIDEGWMYGTVQRTGRTGMLPANYIE 55
Score = 28.4 bits (63), Expect = 0.80
Identities = 16/52 (30%), Positives = 28/52 (53%), Gaps = 3/52 (5%)
Query: 106 YIAAYPYDSTEPGDLTFNQ-DEVIYVTKKENDWWTGTI--GDRTGLFPSNYV 154
Y A Y Y + + +++F D ++ V + W GT+ RTG+ P+NY+
Sbjct: 3 YRAMYDYSAQDEDEVSFRDGDYIVNVQPIDEGWMYGTVQRTGRTGMLPANYI 54
Score = 27.3 bits (60), Expect = 1.9
Identities = 14/50 (28%), Positives = 25/50 (50%), Gaps = 3/50 (6%)
Query: 227 YTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVK 276
Y+A +++S G I+ + GW G +Q G+ G PA+Y++
Sbjct: 9 YSAQDEDEVSFRDGDYIVNVQPIDEGWMYGTVQRTGRT---GMLPANYIE 55
>gnl|CDD|212847 cd11914, SH3_BAIAP2L2, Src Homology 3 domain of Brain-specific
Angiogenesis Inhibitor 1-Associated Protein 2-Like 2.
BAIAP2L2 co-localizes with clathrin plaques but its
function has not been determined. It contains an
N-terminal IMD or Inverse-Bin/Amphiphysin/Rvs (I-BAR)
domain, an SH3 domain, and a WASP homology 2 (WH2)
actin-binding motif at the C-terminus. The related
proteins, BAIAP2L1 and IRSp53, function as regulators
of membrane dynamics and the actin cytoskeleton. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 59
Score = 45.6 bits (108), Expect = 6e-07
Identities = 28/59 (47%), Positives = 33/59 (55%), Gaps = 4/59 (6%)
Query: 39 RRYRAIYEF-VSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQT--GWFPESYVEP 94
RR RAI N L F GDII V V + A GWL G+L G + GWFPE+YV+
Sbjct: 1 RRVRAIVSHPAGSNPTLLRFNRGDIITVLVPE-ARNGWLYGKLEGSSRQGWFPEAYVKA 58
Score = 31.3 bits (71), Expect = 0.057
Identities = 18/45 (40%), Positives = 27/45 (60%), Gaps = 4/45 (8%)
Query: 235 LSLSRGQLI-MIRKKTTTGWWEGELQAKGKKRQVGWFPASYVKVM 278
L +RG +I ++ + GW G+L+ G RQ GWFP +YVK +
Sbjct: 18 LRFNRGDIITVLVPEARNGWLYGKLE--GSSRQ-GWFPEAYVKAL 59
>gnl|CDD|212992 cd12059, SH3_MLK1-3, Src Homology 3 domain of Mixed Lineage Kinases
1, 2, and 3. MLKs 1, 2, and 3 are Serine/Threonine
Kinases (STKs), catalyzing the transfer of the
gamma-phosphoryl group from ATP to S/T residues on
protein substrates. MLKs act as mitogen-activated
protein kinase kinase kinases (MAP3Ks, MKKKs, MAPKKKs),
which phosphorylate and activate MAPK kinases (MAPKKs or
MKKs or MAP2Ks), which in turn phosphorylate and
activate MAPKs during signaling cascades that are
important in mediating cellular responses to
extracellular signals. MLKs play roles in immunity and
inflammation, as well as in cell death, proliferation,
and cell cycle regulation. Little is known about the
specific function of MLK1, also called MAP3K9. It is
capable of activating the c-Jun N-terminal kinase
pathway. Mice lacking both MLK1 and MLK2 are viable,
fertile, and have normal life spans. MLK2, also called
MAP3K10, is abundant in brain, skeletal muscle, and
testis. It functions upstream of the MAPK, c-Jun
N-terminal kinase. It binds hippocalcin, a
calcium-sensor protein that protects neurons against
calcium-induced cell death. Both MLK2 and hippocalcin
may be associated with the pathogenesis of Parkinson's
disease. MLK3, also called MAP3K11, is highly expressed
in breast cancer cells and its signaling through c-Jun
N-terminal kinase has been implicated in the migration,
invasion, and malignancy of cancer cells. It also
functions as a negative regulator of Inhibitor of
Nuclear Factor-KappaB Kinase (IKK) and thus, impacts
inflammation and immunity. MLKs contain an SH3 domain, a
catalytic kinase domain, a leucine zipper, a
proline-rich region, and a CRIB domain that mediates
binding to GTP-bound Cdc42 and Rac. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 58
Score = 45.5 bits (108), Expect = 6e-07
Identities = 20/58 (34%), Positives = 32/58 (55%), Gaps = 6/58 (10%)
Query: 105 YYIAAYPYDSTEPGDLTFNQDEVIYVTKKEND------WWTGTIGDRTGLFPSNYVVP 156
+ A + Y+++ +LT + + + V K++ WWTG I DR G+FPSNYV
Sbjct: 1 VWTAVFDYEASAEDELTLRRGDRVEVLSKDSAVSGDEGWWTGKINDRVGIFPSNYVTS 58
Score = 37.1 bits (86), Expect = 5e-04
Identities = 18/59 (30%), Positives = 32/59 (54%), Gaps = 10/59 (16%)
Query: 222 TVLAPYTATSSEQLSLSRGQLIMIRKKTTT-----GWWEGELQAKGKKRQVGWFPASYV 275
T + Y A++ ++L+L RG + + K + GWW G++ + VG FP++YV
Sbjct: 3 TAVFDYEASAEDELTLRRGDRVEVLSKDSAVSGDEGWWTGKINDR-----VGIFPSNYV 56
Score = 36.3 bits (84), Expect = 0.001
Identities = 17/55 (30%), Positives = 31/55 (56%), Gaps = 3/55 (5%)
Query: 43 AIYEFVSRNGDELSFQPGDIIMVPVKQNA---EPGWLAGELRGQTGWFPESYVEP 94
A++++ + DEL+ + GD + V K +A + GW G++ + G FP +YV
Sbjct: 4 AVFDYEASAEDELTLRRGDRVEVLSKDSAVSGDEGWWTGKINDRVGIFPSNYVTS 58
>gnl|CDD|212931 cd11998, SH3_PACSIN1-2, Src homology 3 domain of Protein kinase C
and Casein kinase Substrate in Neurons 1 (PACSIN1) and
PACSIN 2. PACSIN 1 or Syndapin I (Synaptic
dynamin-associated protein I) is expressed specifically
in the brain and is localized in neurites and synaptic
boutons. It binds the brain-specific proteins dynamin
I, synaptojanin, synapsin I, and neural Wiskott-Aldrich
syndrome protein (nWASP), and functions as a link
between the cytoskeletal machinery and synaptic vesicle
endocytosis. PACSIN 1 interacts with huntingtin and may
be implicated in the neuropathology of Huntington's
disease. PACSIN 2 or Syndapin II is expressed
ubiquitously and is involved in the regulation of
tubulin polymerization. It associates with Golgi
membranes and forms a complex with dynamin II which is
crucial in promoting vesicle formation from the
trans-Golgi network. PACSINs act as regulators of
cytoskeletal and membrane dynamics. Vetebrates harbor
three isoforms with distinct expression patterns and
specific functions. PACSINs contain an N-terminal F-BAR
domain and a C-terminal SH3 domain. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 56
Score = 45.3 bits (107), Expect = 6e-07
Identities = 24/56 (42%), Positives = 34/56 (60%), Gaps = 2/56 (3%)
Query: 40 RYRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGEL-RGQTGWFPESYVEP 94
R RA+Y++ + DELSF+ GD + ++ E GW G L GQ G +P +YVEP
Sbjct: 2 RVRALYDYDGQEQDELSFKAGD-ELTKLEDEDEQGWCKGRLDSGQVGLYPANYVEP 56
Score = 31.5 bits (71), Expect = 0.058
Identities = 17/52 (32%), Positives = 28/52 (53%), Gaps = 3/52 (5%)
Query: 108 AAYPYDSTEPGDLTFNQDEVIYVTKKEND--WWTGTI-GDRTGLFPSNYVVP 156
A Y YD E +L+F + + + E++ W G + + GL+P+NYV P
Sbjct: 5 ALYDYDGQEQDELSFKAGDELTKLEDEDEQGWCKGRLDSGQVGLYPANYVEP 56
>gnl|CDD|212902 cd11969, SH3_PLCgamma2, Src homology 3 domain of Phospholipase C
(PLC) gamma 2. PLCgamma2 is primarily expressed in
haematopoietic cells, specifically in B cells. It is
activated by tyrosine phosphorylation by B cell receptor
(BCR) kinases and is recruited to the plasma membrane
where its substrate is located. It is required in
pre-BCR signaling and in the maturation of B cells. PLCs
catalyze the hydrolysis of phosphatidylinositol
(4,5)-bisphosphate [PtdIns(4,5)P2] to produce
Ins(1,4,5)P3 and diacylglycerol (DAG). Ins(1,4,5)P3
initiates the calcium signaling cascade while DAG
functions as an activator of PKC. PLCgamma contains a
Pleckstrin homology (PH) domain followed by an
elongation factor (EF) domain, two catalytic regions of
PLC domains that flank two tandem SH2 domains, followed
by a SH3 domain and C2 domain. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 55
Score = 45.2 bits (107), Expect = 6e-07
Identities = 18/49 (36%), Positives = 27/49 (55%), Gaps = 2/49 (4%)
Query: 108 AAYPYDSTEPGDLTFNQDEVIY-VTKKENDWWTGTIGDRTG-LFPSNYV 154
A Y Y + +L+F + +I+ V+K+ WW G G + FPSNYV
Sbjct: 4 ALYDYRAKRSDELSFCKGALIHNVSKETGGWWKGDYGGKVQHYFPSNYV 52
Score = 41.0 bits (96), Expect = 2e-05
Identities = 22/53 (41%), Positives = 31/53 (58%), Gaps = 4/53 (7%)
Query: 224 LAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVK 276
L Y A S++LS +G LI K T GWW+G+ G K Q +FP++YV+
Sbjct: 5 LYDYRAKRSDELSFCKGALIHNVSKETGGWWKGDY---GGKVQH-YFPSNYVE 53
Score = 30.2 bits (68), Expect = 0.13
Identities = 19/53 (35%), Positives = 31/53 (58%), Gaps = 3/53 (5%)
Query: 42 RAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTG-WFPESYVE 93
+A+Y++ ++ DELSF G +I K+ GW G+ G+ +FP +YVE
Sbjct: 3 KALYDYRAKRSDELSFCKGALIHNVSKETG--GWWKGDYGGKVQHYFPSNYVE 53
>gnl|CDD|212724 cd11790, SH3_Amphiphysin, Src Homology 3 domain of Amphiphysin
and related domains. Amphiphysins function primarily
in endocytosis and other membrane remodeling events.
They exist in several isoforms and mammals possess two
amphiphysin proteins from distinct genes. Amphiphysin I
proteins, enriched in the brain and nervous system,
contain domains that bind clathrin, Adaptor Protein
complex 2 (AP2), dynamin, and synaptojanin. They
function in synaptic vesicle endocytosis. Human
autoantibodies to amphiphysin I hinder GABAergic
signaling and contribute to the pathogenesis of
paraneoplastic stiff-person syndrome. Some amphiphysin
II isoforms, also called Bridging integrator 1 (Bin1),
are localized in many different tissues and may
function in intracellular vesicle trafficking. In
skeletal muscle, Bin1 plays a role in the organization
and maintenance of the T-tubule network. Mutations in
Bin1 are associated with autosomal recessive
centronuclear myopathy. Amphiphysins contain an
N-terminal BAR domain with an additional N-terminal
amphipathic helix (an N-BAR), a variable central
domain, and a C-terminal SH3 domain. The SH3 domain of
amphiphysins bind proline-rich motifs present in
binding partners such as dynamin, synaptojanin, and
nsP3. It also belongs to a subset of SH3 domains that
bind ubiquitin in a site that overlaps with the peptide
binding site. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP
motifs. They play versatile and diverse roles in the
cell including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 64
Score = 45.4 bits (108), Expect = 6e-07
Identities = 23/62 (37%), Positives = 37/62 (59%), Gaps = 9/62 (14%)
Query: 40 RYRAIYEFVSRNGDELSFQPGDIIMV-----PVKQNAEPGWLAG--ELRGQTGWFPESYV 92
+ RA +++ + + DEL+F+ GD+I+V P +Q + GWL G E G G FPE++
Sbjct: 4 KVRATHDYTAEDTDELTFEKGDVILVIPFDDPEEQ--DEGWLMGVKESTGCRGVFPENFT 61
Query: 93 EP 94
E
Sbjct: 62 ER 63
Score = 33.5 bits (77), Expect = 0.011
Identities = 14/57 (24%), Positives = 24/57 (42%), Gaps = 8/57 (14%)
Query: 108 AAYPYDSTEPGDLTFNQDEVIYVTKKEND------WWTGTIGDRT--GLFPSNYVVP 156
A + Y + + +LTF + +VI V ++ W G G+FP N+
Sbjct: 7 ATHDYTAEDTDELTFEKGDVILVIPFDDPEEQDEGWLMGVKESTGCRGVFPENFTER 63
Score = 29.6 bits (67), Expect = 0.25
Identities = 13/56 (23%), Positives = 29/56 (51%), Gaps = 8/56 (14%)
Query: 226 PYTATSSEQLSLSRGQLIMI-----RKKTTTGWWEGELQAKGKKRQVGWFPASYVK 276
YTA +++L+ +G +I++ ++ GW G ++ G + G FP ++ +
Sbjct: 10 DYTAEDTDELTFEKGDVILVIPFDDPEEQDEGWLMGVKESTGCR---GVFPENFTE 62
>gnl|CDD|212713 cd11779, SH3_Irsp53_BAIAP2L, Src Homology 3 domain of Insulin
Receptor tyrosine kinase Substrate p53, Brain-specific
Angiogenesis Inhibitor 1-Associated Protein 2
(BAIAP2)-Like proteins, and similar proteins. Proteins
in this family include IRSp53, BAIAP2L1, BAIAP2L2, and
similar proteins. They all contain an
Inverse-Bin/Amphiphysin/Rvs (I-BAR) or IMD domain in
addition to the SH3 domain. IRSp53, also known as
BAIAP2, is a scaffolding protein that takes part in
many signaling pathways including Cdc42-induced
filopodia formation, Rac-mediated lamellipodia
extension, and spine morphogenesis. IRSp53 exists as
multiple splicing variants that differ mainly at the
C-termini. BAIAP2L1, also called IRTKS (Insulin
Receptor Tyrosine Kinase Substrate), serves as a
substrate for the insulin receptor and binds the small
GTPase Rac. It plays a role in regulating the actin
cytoskeleton and colocalizes with F-actin, cortactin,
VASP, and vinculin. IRSp53 and IRTKS also mediate the
recruitment of effector proteins Tir and EspFu, which
regulate host cell actin reorganization, to bacterial
attachment sites. BAIAP2L2 co-localizes with clathrin
plaques but its function has not been determined. The
SH3 domains of IRSp53 and IRTKS have been shown to bind
the proline-rich C-terminus of EspFu. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 57
Score = 45.4 bits (108), Expect = 6e-07
Identities = 21/58 (36%), Positives = 32/58 (55%), Gaps = 3/58 (5%)
Query: 39 RRYRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGEL--RGQTGWFPESYVEP 94
R +A+Y + +LSF+ GD+I + + + GW GE G+ GWFP +Y EP
Sbjct: 1 PRVKALYPHAAGGETQLSFEEGDVITLLGPEPRD-GWHYGENERSGRRGWFPIAYTEP 57
Score = 37.7 bits (88), Expect = 3e-04
Identities = 18/54 (33%), Positives = 28/54 (51%), Gaps = 4/54 (7%)
Query: 224 LAPYTATSSEQLSLSRGQLI-MIRKKTTTGWWEGELQAKGKKRQVGWFPASYVK 276
L P+ A QLS G +I ++ + GW GE + G++ GWFP +Y +
Sbjct: 6 LYPHAAGGETQLSFEEGDVITLLGPEPRDGWHYGENERSGRR---GWFPIAYTE 56
>gnl|CDD|212807 cd11874, SH3_CD2AP-like_2, Second Src Homology 3 domain (SH3B) of
CD2-associated protein and similar proteins. This
subfamily is composed of the second SH3 domain (SH3B)
of CD2AP, CIN85 (Cbl-interacting protein of 85 kDa),
and similar domains. CD2AP and CIN85 are adaptor
proteins that bind to protein partners and assemble
complexes that have been implicated in T cell
activation, kidney function, and apoptosis of neuronal
cells. They also associate with endocytic proteins,
actin cytoskeleton components, and other adaptor
proteins involved in receptor tyrosine kinase (RTK)
signaling. CD2AP and the main isoform of CIN85 contain
three SH3 domains, a proline-rich region, and a
C-terminal coiled-coil domain. All of these domains
enable CD2AP and CIN85 to bind various protein partners
and assemble complexes that have been implicated in
many different functions. SH3B of both proteins have
been shown to bind to Cbl. In the case of CD2AP, its
SH3B binds to Cbl at a site distinct from the
c-Cbl/SH3A binding site. The CIN85 SH3B also binds
ubiquitin. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP
motifs. They play versatile and diverse roles in the
cell including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 53
Score = 45.0 bits (107), Expect = 6e-07
Identities = 19/54 (35%), Positives = 32/54 (59%), Gaps = 2/54 (3%)
Query: 40 RYRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVE 93
R + ++ + +N DEL + GD I V + + E GW G+L G+ G FP ++V+
Sbjct: 1 RCKVLFSYTPQNEDELELKVGDTIEV-LGE-VEEGWWEGKLNGKVGVFPSNFVK 52
Score = 41.6 bits (98), Expect = 1e-05
Identities = 21/57 (36%), Positives = 30/57 (52%), Gaps = 5/57 (8%)
Query: 221 ATVLAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVKV 277
VL YT + ++L L G I + + GWWEG+L K VG FP+++VK
Sbjct: 2 CKVLFSYTPQNEDELELKVGDTIEVLGEVEEGWWEGKLNGK-----VGVFPSNFVKE 53
Score = 41.2 bits (97), Expect = 2e-05
Identities = 13/48 (27%), Positives = 22/48 (45%), Gaps = 1/48 (2%)
Query: 108 AAYPYDSTEPGDLTFNQDEVIYVTKKEND-WWTGTIGDRTGLFPSNYV 154
+ Y +L + I V + + WW G + + G+FPSN+V
Sbjct: 4 VLFSYTPQNEDELELKVGDTIEVLGEVEEGWWEGKLNGKVGVFPSNFV 51
>gnl|CDD|212755 cd11821, SH3_ASAP, Src homology 3 domain of ArfGAP with SH3 domain,
ankyrin repeat and PH domain containing proteins. ASAPs
are Arf GTPase activating proteins (GAPs) and they
function in regulating cell growth, migration, and
invasion. They contain an N-terminal BAR domain,
followed by a Pleckstrin homology (PH) domain, an Arf
GAP domain, ankyrin (ANK) repeats, and a C-terminal SH3
domain. Vertebrates contain at least three members,
ASAP1, ASAP2, and ASAP3, but some ASAP3 proteins do not
seem to harbor a C-terminal SH3 domain. ASAP1 and ASAP2
show GTPase activating protein (GAP) activity towards
Arf1 and Arf5. They do not show GAP activity towards
Arf6, but are able to mediate Arf6 signaling by binding
stably to GTP-Arf6. ASAP3 is an Arf6-specific GAP. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 53
Score = 45.0 bits (107), Expect = 7e-07
Identities = 18/50 (36%), Positives = 29/50 (58%), Gaps = 4/50 (8%)
Query: 108 AAYPYDSTEPGDLTFNQDEVIYVTKKEN-DWWTGTI---GDRTGLFPSNY 153
A Y + +LTF++ E+I VT +E+ +WW G I R G+FP ++
Sbjct: 4 ALYDCQADNDDELTFSEGEIIVVTGEEDDEWWEGHIEGDPSRRGVFPVSF 53
Score = 43.1 bits (102), Expect = 3e-06
Identities = 21/55 (38%), Positives = 32/55 (58%), Gaps = 5/55 (9%)
Query: 40 RYRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQ---TGWFPESY 91
R RA+Y+ + N DEL+F G+II+V +++ E W G + G G FP S+
Sbjct: 1 RVRALYDCQADNDDELTFSEGEIIVVTGEEDDE--WWEGHIEGDPSRRGVFPVSF 53
Score = 36.9 bits (86), Expect = 6e-04
Identities = 14/46 (30%), Positives = 27/46 (58%), Gaps = 2/46 (4%)
Query: 229 ATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASY 274
A + ++L+ S G++I++ + WWEG ++ G + G FP S+
Sbjct: 10 ADNDDELTFSEGEIIVVTGEEDDEWWEGHIE--GDPSRRGVFPVSF 53
>gnl|CDD|212738 cd11804, SH3_GRB2_like_N, N-terminal Src homology 3 domain of
Growth factor receptor-bound protein 2 (GRB2) and
related proteins. This family includes the adaptor
protein GRB2 and related proteins including Drosophila
melanogaster Downstream of receptor kinase (DRK),
Caenorhabditis elegans Sex muscle abnormal protein 5
(Sem-5), GRB2-related adaptor protein (GRAP), GRAP2,
and similar proteins. Family members contain an
N-terminal SH3 domain, a central SH2 domain, and a
C-terminal SH3 domain. GRB2/Sem-5/DRK is a critical
signaling molecule that regulates the Ras pathway by
linking tyrosine kinases to the Ras guanine nucleotide
releasing protein Sos (son of sevenless), which
converts Ras to the active GTP-bound state. GRAP2 plays
an important role in T cell receptor (TCR) signaling by
promoting the formation of the SLP-76:LAT complex,
which couples the TCR to the Ras pathway. GRAP acts as
a negative regulator of T cell receptor (TCR)-induced
lymphocyte proliferation by downregulating the
signaling to the Ras/ERK pathway. The N-terminal SH3
domain of GRB2 binds to Sos and Sos-derived
proline-rich peptides. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles
in the cell including the regulation of enzymes,
changing the subcellular localization of signaling
pathway components, and mediating the formation of
multiprotein complex assemblies.
Length = 52
Score = 45.0 bits (107), Expect = 7e-07
Identities = 18/51 (35%), Positives = 29/51 (56%), Gaps = 1/51 (1%)
Query: 42 RAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYV 92
A ++F + DELSF+ G I+ V + +P W EL G+ G P++Y+
Sbjct: 3 VAKHDFKATAEDELSFKKGSILKV-LNMEDDPNWYKAELDGKEGLIPKNYI 52
Score = 37.3 bits (87), Expect = 4e-04
Identities = 13/50 (26%), Positives = 27/50 (54%), Gaps = 2/50 (4%)
Query: 107 IAAYPYDSTEPGDLTFNQDEVIYVTKKEND--WWTGTIGDRTGLFPSNYV 154
+A + + +T +L+F + ++ V E+D W+ + + GL P NY+
Sbjct: 3 VAKHDFKATAEDELSFKKGSILKVLNMEDDPNWYKAELDGKEGLIPKNYI 52
Score = 27.7 bits (62), Expect = 1.00
Identities = 12/50 (24%), Positives = 25/50 (50%), Gaps = 6/50 (12%)
Query: 227 YTATSSEQLSLSRGQLIMI-RKKTTTGWWEGELQAKGKKRQVGWFPASYV 275
+ AT+ ++LS +G ++ + + W++ EL K G P +Y+
Sbjct: 8 FKATAEDELSFKKGSILKVLNMEDDPNWYKAELDGK-----EGLIPKNYI 52
>gnl|CDD|212998 cd12065, SH3_GRAF2, Src Homology 3 domain of GTPase Regulator
Associated with Focal adhesion kinase 2. GRAF2, also
called Rho GTPase activating protein 10 (ARHGAP10) or
PS-GAP, is a GAP with activity towards Cdc42 and RhoA.
It regulates caspase-activated p21-activated protein
kinase-2 (PAK-2p34). GRAF2 interacts with PAK-2p34,
leading to its stabilization and decrease of cell
death. It is highly expressed in skeletal muscle, and
is involved in alpha-catenin recruitment at cell-cell
junctions. GRAF2 contains an N-terminal BAR domain,
followed by a Pleckstrin homology (PH) domain, a Rho
GAP domain, and a C-terminal SH3 domain. The SH3 domain
of GRAF binds PKNbeta, a target of the small GTPase
Rho. SH3 domains bind to proline-rich ligands with
moderate affinity and selectivity, preferentially to
PxxP motifs; they play a role in the regulation of
enzymes by intramolecular interactions, changing the
subcellular localization of signal pathway components
and mediate multiprotein complex assemblies.
Length = 54
Score = 45.0 bits (106), Expect = 7e-07
Identities = 23/52 (44%), Positives = 31/52 (59%), Gaps = 1/52 (1%)
Query: 42 RAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVE 93
+A+Y + + ELSF+ G I V + EPGWL G L G+ G PE+YVE
Sbjct: 3 KAVYPCEAEHSSELSFEVGAIFE-DVTLSREPGWLEGTLNGKRGLIPENYVE 53
Score = 31.9 bits (72), Expect = 0.039
Identities = 15/49 (30%), Positives = 23/49 (46%), Gaps = 2/49 (4%)
Query: 108 AAYPYDSTEPGDLTFNQDEVIY--VTKKENDWWTGTIGDRTGLFPSNYV 154
A YP ++ +L+F + +E W GT+ + GL P NYV
Sbjct: 4 AVYPCEAEHSSELSFEVGAIFEDVTLSREPGWLEGTLNGKRGLIPENYV 52
>gnl|CDD|212892 cd11959, SH3_Cortactin, Src homology 3 domain of Cortactin.
Cortactin was originally identified as a substrate of
Src kinase. It is an actin regulatory protein that
binds to the Arp2/3 complex and stabilizes branched
actin filaments. It is involved in cellular processes
that affect cell motility, adhesion, migration,
endocytosis, and invasion. It is expressed ubiquitously
except in hematopoietic cells, where the homolog
hematopoietic lineage cell-specific 1 (HS1) is
expressed instead. Cortactin contains an N-terminal
acidic domain, several copies of a repeat domain found
in cortactin and HS1, a proline-rich region, and a
C-terminal SH3 domain. The N-terminal region interacts
with the Arp2/3 complex and F-actin, and is crucial in
regulating branched actin assembly. Cortactin also
serves as a scaffold and provides a bridge to the actin
cytoskeleton for membrane trafficking and signaling
proteins that bind to its SH3 domain. Binding partners
for the SH3 domain of cortactin include dynamin2,
N-WASp, MIM, FGD1, among others. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 53
Score = 45.1 bits (107), Expect = 7e-07
Identities = 22/51 (43%), Positives = 32/51 (62%), Gaps = 2/51 (3%)
Query: 43 AIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVE 93
A+Y++ + + DE+SF P DII ++ E GW G RG+ G FP +YVE
Sbjct: 4 ALYDYQAADDDEISFDPDDII-TNIEMIDE-GWWRGVCRGKYGLFPANYVE 52
Score = 43.9 bits (104), Expect = 2e-06
Identities = 16/49 (32%), Positives = 29/49 (59%), Gaps = 1/49 (2%)
Query: 107 IAAYPYDSTEPGDLTFNQDEVI-YVTKKENDWWTGTIGDRTGLFPSNYV 154
+A Y Y + + +++F+ D++I + + WW G + GLFP+NYV
Sbjct: 3 VALYDYQAADDDEISFDPDDIITNIEMIDEGWWRGVCRGKYGLFPANYV 51
Score = 34.3 bits (79), Expect = 0.004
Identities = 16/58 (27%), Positives = 26/58 (44%), Gaps = 5/58 (8%)
Query: 220 IATVLAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVKV 277
A L Y A +++S +I + GWW G + + G FPA+YV++
Sbjct: 1 TAVALYDYQAADDDEISFDPDDIITNIEMIDEGWWRGVC-----RGKYGLFPANYVEL 53
>gnl|CDD|212904 cd11971, SH3_Abi1, Src homology 3 domain of Abl Interactor 1.
Abi1, also called e3B1, is a central regulator of actin
cytoskeletal reorganization through interactions with
many protein complexes. It is part of WAVE, a
nucleation-promoting factor complex, that links Rac 1
activation to actin polymerization causing lamellipodia
protrusion at the plasma membrane. Abi1 interact with
formins to promote protrusions at the leading edge of
motile cells. It also is a target of alpha4 integrin,
regulating membrane protrusions at sites of integrin
engagement. Abi proteins are adaptor proteins serving
as binding partners and substrates of Abl tyrosine
kinases. They are involved in regulating actin
cytoskeletal reorganization and play important roles in
membrane-ruffling, endocytosis, cell motility, and cell
migration. Abi proteins contain a homeobox homology
domain, a proline-rich region, and a SH3 domain. The
SH3 domain of Abi binds to a PxxP motif in Abl. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 59
Score = 45.0 bits (106), Expect = 9e-07
Identities = 25/51 (49%), Positives = 31/51 (60%), Gaps = 2/51 (3%)
Query: 43 AIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVE 93
AIY++ DELSF G II V +K+N + GW G G TG FP +YVE
Sbjct: 4 AIYDYSKDKDDELSFMEGAIIYV-IKKN-DDGWYEGVCNGVTGLFPGNYVE 52
Score = 44.6 bits (105), Expect = 1e-06
Identities = 21/49 (42%), Positives = 29/49 (59%), Gaps = 1/49 (2%)
Query: 107 IAAYPYDSTEPGDLTFNQDEVIYVTKKEND-WWTGTIGDRTGLFPSNYV 154
+A Y Y + +L+F + +IYV KK +D W+ G TGLFP NYV
Sbjct: 3 VAIYDYSKDKDDELSFMEGAIIYVIKKNDDGWYEGVCNGVTGLFPGNYV 51
Score = 34.2 bits (78), Expect = 0.005
Identities = 16/50 (32%), Positives = 24/50 (48%), Gaps = 5/50 (10%)
Query: 227 YTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVK 276
Y+ ++LS G +I + KK GW+EG G FP +YV+
Sbjct: 8 YSKDKDDELSFMEGAIIYVIKKNDDGWYEGVCN-----GVTGLFPGNYVE 52
>gnl|CDD|212754 cd11820, SH3_STAM, Src homology 3 domain of Signal Transducing
Adaptor Molecules. STAMs were discovered as proteins
that are highly phosphorylated following cytokine and
growth factor stimulation. They function in cytokine
signaling and surface receptor degradation, as well as
regulate Golgi morphology. They associate with many
proteins including Jak2 and Jak3 tyrosine kinases, Hrs,
AMSH, and UBPY. STAM adaptor proteins contain VHS
(Vps27, Hrs, STAM homology), ubiquitin interacting
(UIM), and SH3 domains. There are two vertebrate STAMs,
STAM1 and STAM2, which may be functionally redundant;
vertebrate STAMs contain ITAM motifs. They are part of
the endosomal sorting complex required for transport
(ESCRT-0). STAM2 deficiency in mice did not cause any
obvious abnormality, while STAM1 deficiency resulted in
growth retardation. Loss of both STAM1 and STAM2 in
mice proved lethal, indicating that STAMs are important
for embryonic development. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles
in the cell including the regulation of enzymes,
changing the subcellular localization of signaling
pathway components, and mediating the formation of
multiprotein complex assemblies.
Length = 54
Score = 44.8 bits (106), Expect = 1e-06
Identities = 19/54 (35%), Positives = 32/54 (59%), Gaps = 2/54 (3%)
Query: 39 RRYRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYV 92
R+ RA+Y+F + +EL+F+ G+II V +++P W G G FP ++V
Sbjct: 1 RKVRALYDFEAAEDNELTFKAGEIIT--VLDDSDPNWWKGSNHRGEGLFPANFV 52
Score = 42.8 bits (101), Expect = 4e-06
Identities = 18/48 (37%), Positives = 28/48 (58%), Gaps = 1/48 (2%)
Query: 108 AAYPYDSTEPGDLTFNQDEVIYVTKKEN-DWWTGTIGDRTGLFPSNYV 154
A Y +++ E +LTF E+I V + +WW G+ GLFP+N+V
Sbjct: 5 ALYDFEAAEDNELTFKAGEIITVLDDSDPNWWKGSNHRGEGLFPANFV 52
Score = 33.2 bits (76), Expect = 0.014
Identities = 14/53 (26%), Positives = 24/53 (45%), Gaps = 5/53 (9%)
Query: 224 LAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVK 276
L + A +L+ G++I + + WW+G R G FPA++V
Sbjct: 6 LYDFEAAEDNELTFKAGEIITVLDDSDPNWWKGSNH-----RGEGLFPANFVT 53
>gnl|CDD|212809 cd11876, SH3_MLK, Src Homology 3 domain of Mixed Lineage Kinases.
MLKs are Serine/Threonine Kinases (STKs), catalyzing the
transfer of the gamma-phosphoryl group from ATP to S/T
residues on protein substrates. MLKs act as
mitogen-activated protein kinase kinase kinases (MAP3Ks,
MKKKs, MAPKKKs), which phosphorylate and activate MAPK
kinases (MAPKKs or MKKs or MAP2Ks), which in turn
phosphorylate and activate MAPKs during signaling
cascades that are important in mediating cellular
responses to extracellular signals. MLKs play roles in
immunity and inflammation, as well as in cell death,
proliferation, and cell cycle regulation. Mammals have
four MLKs (MLK1-4), mostly conserved in vertebrates,
which contain an SH3 domain, a catalytic kinase domain,
a leucine zipper, a proline-rich region, and a CRIB
domain that mediates binding to GTP-bound Cdc42 and Rac.
SH3 domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 58
Score = 44.8 bits (106), Expect = 1e-06
Identities = 22/57 (38%), Positives = 32/57 (56%), Gaps = 6/57 (10%)
Query: 106 YIAAYPYDSTEPGDLTFNQDEVIYVTKKEND------WWTGTIGDRTGLFPSNYVVP 156
+ A + YD+ +LT + + + V K+ WWTG IGD+ G+FPSNYV P
Sbjct: 2 WTALFDYDARGEDELTLRRGQPVEVLSKDAAVSGDEGWWTGKIGDKVGIFPSNYVAP 58
Score = 36.7 bits (85), Expect = 6e-04
Identities = 21/59 (35%), Positives = 30/59 (50%), Gaps = 10/59 (16%)
Query: 222 TVLAPYTATSSEQLSLSRGQLIMIRKKTTT-----GWWEGELQAKGKKRQVGWFPASYV 275
T L Y A ++L+L RGQ + + K GWW G++ K VG FP++YV
Sbjct: 3 TALFDYDARGEDELTLRRGQPVEVLSKDAAVSGDEGWWTGKIGDK-----VGIFPSNYV 56
Score = 36.3 bits (84), Expect = 0.001
Identities = 16/55 (29%), Positives = 30/55 (54%), Gaps = 3/55 (5%)
Query: 43 AIYEFVSRNGDELSFQPGDIIMV---PVKQNAEPGWLAGELRGQTGWFPESYVEP 94
A++++ +R DEL+ + G + V + + GW G++ + G FP +YV P
Sbjct: 4 ALFDYDARGEDELTLRRGQPVEVLSKDAAVSGDEGWWTGKIGDKVGIFPSNYVAP 58
>gnl|CDD|212852 cd11919, SH3_Sorbs1_1, First Src Homology 3 domain of Sorbin and
SH3 domain containing 1 (Sorbs1), also called ponsin.
Sorbs1 is also called ponsin, SH3P12, or CAP (c-Cbl
associated protein). It is an adaptor protein
containing one sorbin homology (SoHo) and three SH3
domains. It binds Cbl and plays a major role in
regulating the insulin signaling pathway by enhancing
insulin-induced phosphorylation of Cbl. Sorbs1, like
vinexin, localizes at cell-ECM and cell-cell adhesion
sites where it binds vinculin, paxillin, and afadin. It
may function in the control of cell motility. Other
interaction partners of Sorbs1 include c-Abl, Sos,
flotillin, Grb4, ataxin-7, filamin C, among others. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 55
Score = 44.6 bits (105), Expect = 1e-06
Identities = 20/55 (36%), Positives = 30/55 (54%), Gaps = 2/55 (3%)
Query: 39 RRYRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVE 93
R RA ++F ++ EL Q GDI+ + + + W GE G+ G FP SY+E
Sbjct: 1 RPARAKFDFKAQTLKELPLQKGDIVYI--YKQIDQNWYEGEHHGRVGIFPRSYIE 53
Score = 38.0 bits (88), Expect = 3e-04
Identities = 16/52 (30%), Positives = 30/52 (57%), Gaps = 5/52 (9%)
Query: 227 YTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVKVM 278
+ A + ++L L +G ++ I K+ W+EGE + VG FP SY++++
Sbjct: 9 FKAQTLKELPLQKGDIVYIYKQIDQNWYEGEHHGR-----VGIFPRSYIELL 55
Score = 28.0 bits (62), Expect = 0.80
Identities = 11/48 (22%), Positives = 27/48 (56%), Gaps = 1/48 (2%)
Query: 108 AAYPYDSTEPGDLTFNQDEVIYVTKK-ENDWWTGTIGDRTGLFPSNYV 154
A + + + +L + +++Y+ K+ + +W+ G R G+FP +Y+
Sbjct: 5 AKFDFKAQTLKELPLQKGDIVYIYKQIDQNWYEGEHHGRVGIFPRSYI 52
>gnl|CDD|212803 cd11870, SH3_p67phox-like_C, C-terminal Src Homology 3 domain of
the p67phox subunit of NADPH oxidase and similar
proteins. This subfamily is composed of p67phox, NADPH
oxidase activator 1 (Noxa1), and similar proteins.
p67phox, also called Neutrophil cytosol factor 2
(NCF-2), and Noxa1 are homologs and are the cytosolic
subunits of the phagocytic (Nox2) and nonphagocytic
(Nox1) NADPH oxidase complexes, respectively. NADPH
oxidase catalyzes the transfer of electrons from NADPH
to oxygen during phagocytosis forming superoxide and
reactive oxygen species. p67phox and Noxa1 play
regulatory roles. p67phox contains N-terminal TPR,
first SH3 (or N-terminal or central SH3), PB1, and
C-terminal SH3 domains. Noxa1 has a similar domain
architecture except it is lacking the N-terminal SH3
domain. The TPR domain of both binds activated
GTP-bound Rac, while the C-terminal SH3 domain of
p67phox and Noxa1 binds the polyproline motif found at
the C-terminus of p47phox and Noxo1, respectively. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 53
Score = 44.4 bits (105), Expect = 1e-06
Identities = 17/52 (32%), Positives = 29/52 (55%), Gaps = 2/52 (3%)
Query: 43 AIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVEP 94
A++ + ++ ++L F+ GD I V + N WL G G+ G FP+ +V P
Sbjct: 4 ALHRYEAQGPEDLGFREGDTIDVLSEVNEA--WLEGHSDGRVGIFPKCFVVP 53
Score = 44.1 bits (104), Expect = 2e-06
Identities = 18/51 (35%), Positives = 27/51 (52%), Gaps = 1/51 (1%)
Query: 107 IAAYPYDSTEPGDLTFNQDEVIYVTKKEN-DWWTGTIGDRTGLFPSNYVVP 156
+A + Y++ P DL F + + I V + N W G R G+FP +VVP
Sbjct: 3 VALHRYEAQGPEDLGFREGDTIDVLSEVNEAWLEGHSDGRVGIFPKCFVVP 53
Score = 34.8 bits (80), Expect = 0.003
Identities = 15/50 (30%), Positives = 20/50 (40%), Gaps = 5/50 (10%)
Query: 227 YTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVK 276
Y A E L G I + + W EG + G+ VG FP +V
Sbjct: 8 YEAQGPEDLGFREGDTIDVLSEVNEAWLEGH--SDGR---VGIFPKCFVV 52
>gnl|CDD|213001 cd12068, SH3_MYO15B, Src Homology 3 domain of Myosin XVb. Myosin
XVb, also called KIAA1783, was named based on its
similarity with myosin XVa. It is a transcribed and
unprocessed pseudogene whose predicted amino acid
sequence contains mutated or deleted amino acid
residues that are normally conserved and important for
myosin function. The related myosin XVa is important
for normal growth of mechanosensory stereocilia of
inner ear hair cells. Myosin XVa contains a unique
N-terminal extension followed by a motor domain, light
chain-binding IQ motifs, and a tail consisting of a
pair of MyTH4-FERM tandems separated by a SH3 domain,
and a PDZ domain. SH3 domains bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs; they play a role in the
regulation of enzymes by intramolecular interactions,
changing the subcellular localization of signal pathway
components and mediate multiprotein complex assemblies.
Length = 55
Score = 44.5 bits (105), Expect = 1e-06
Identities = 18/52 (34%), Positives = 28/52 (53%)
Query: 43 AIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVEP 94
A+ +++ + LSF GD+I + EPGW G G++G FP V+P
Sbjct: 4 ALRSYITDDKSLLSFHRGDLIKLLPMAGLEPGWQFGSTGGRSGLFPADIVQP 55
Score = 29.5 bits (66), Expect = 0.23
Identities = 17/55 (30%), Positives = 30/55 (54%), Gaps = 3/55 (5%)
Query: 105 YYIAAYPYDSTEPGDLTFNQDEVIY---VTKKENDWWTGTIGDRTGLFPSNYVVP 156
Y +A Y + + L+F++ ++I + E W G+ G R+GLFP++ V P
Sbjct: 1 YVVALRSYITDDKSLLSFHRGDLIKLLPMAGLEPGWQFGSTGGRSGLFPADIVQP 55
>gnl|CDD|212716 cd11782, SH3_Sorbs_2, Second Src Homology 3 domain of Sorbin and
SH3 domain containing (Sorbs) proteins and similar
domains. This family, also called the vinexin family,
is composed predominantly of adaptor proteins
containing one sorbin homology (SoHo) and three SH3
domains. Members include the second SH3 domains of
Sorbs1 (or ponsin), Sorbs2 (or ArgBP2), Vinexin (or
Sorbs3), and similar domains. They are involved in the
regulation of cytoskeletal organization, cell adhesion,
and growth factor signaling. Members of this family
bind multiple partners including signaling molecules
like c-Abl, c-Arg, Sos, and c-Cbl, as well as
cytoskeletal molecules such as vinculin and afadin.
They may have overlapping functions. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 53
Score = 43.9 bits (104), Expect = 2e-06
Identities = 23/54 (42%), Positives = 31/54 (57%), Gaps = 6/54 (11%)
Query: 42 RAIYEFVSRNGDELSFQPGDIIMV--PVKQNAEPGWLAGELRGQTGWFPESYVE 93
RA Y F + G ELSF+ GD+I + V +N W G + G+ G FP SYV+
Sbjct: 3 RAKYNFNADTGVELSFRKGDVITLTRRVDEN----WYEGRIGGRQGIFPVSYVQ 52
Score = 42.7 bits (101), Expect = 5e-06
Identities = 17/49 (34%), Positives = 32/49 (65%), Gaps = 1/49 (2%)
Query: 107 IAAYPYDSTEPGDLTFNQDEVIYVTKKEND-WWTGTIGDRTGLFPSNYV 154
A Y +++ +L+F + +VI +T++ ++ W+ G IG R G+FP +YV
Sbjct: 3 RAKYNFNADTGVELSFRKGDVITLTRRVDENWYEGRIGGRQGIFPVSYV 51
Score = 38.5 bits (90), Expect = 1e-04
Identities = 16/51 (31%), Positives = 29/51 (56%), Gaps = 5/51 (9%)
Query: 227 YTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVKV 277
+ A + +LS +G +I + ++ W+EG + G ++ G FP SYV+V
Sbjct: 8 FNADTGVELSFRKGDVITLTRRVDENWYEGRI---GGRQ--GIFPVSYVQV 53
>gnl|CDD|212861 cd11928, SH3_SH3RF3_1, First Src Homology 3 domain of SH3 domain
containing ring finger 3, an E3 ubiquitin-protein
ligase. SH3RF3 is also called POSH2 (Plenty of SH3s 2)
or SH3MD4 (SH3 multiple domains protein 4). It is a
scaffold protein with E3 ubiquitin-protein ligase
activity. It was identified in the screen for
interacting partners of p21-activated kinase 2 (PAK2).
It may play a role in regulating JNK mediated apoptosis
in certain conditions. It also interacts with GTP-loaded
Rac1. SH3RF3 is highly homologous to SH3RF1; it also
contains an N-terminal RING finger domain and four SH3
domains. This model represents the first SH3 domain,
located at the N-terminal half, of SH3RF3. SH3 domains
are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 54
Score = 44.1 bits (104), Expect = 2e-06
Identities = 17/48 (35%), Positives = 30/48 (62%), Gaps = 1/48 (2%)
Query: 108 AAYPYDSTEPGDLTFNQDEVIYVTKKEND-WWTGTIGDRTGLFPSNYV 154
A Y Y+ EPGDL FN+ ++I + +K ++ W+ G + G P++Y+
Sbjct: 5 ALYSYEGKEPGDLKFNKGDIIILRRKVDENWYHGELNGCHGFLPASYI 52
Score = 41.8 bits (98), Expect = 1e-05
Identities = 17/52 (32%), Positives = 30/52 (57%), Gaps = 2/52 (3%)
Query: 42 RAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVE 93
+A+Y + + +L F GDII++ ++ + W GEL G G+ P SY++
Sbjct: 4 KALYSYEGKEPGDLKFNKGDIIIL--RRKVDENWYHGELNGCHGFLPASYIQ 53
Score = 36.4 bits (84), Expect = 0.001
Identities = 16/53 (30%), Positives = 26/53 (49%), Gaps = 5/53 (9%)
Query: 224 LAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVK 276
L Y L ++G +I++R+K W+ GEL G+ PASY++
Sbjct: 6 LYSYEGKEPGDLKFNKGDIIILRRKVDENWYHGELNGCH-----GFLPASYIQ 53
>gnl|CDD|212712 cd11778, SH3_Bzz1_2, Second Src Homology 3 domain of Bzz1 and
similar domains. Bzz1 (or Bzz1p) is a
WASP/Las17-interacting protein involved in endocytosis
and trafficking to the vacuole. It physically interacts
with type I myosins and functions in the early steps of
endocytosis. Together with other proteins, it induces
membrane scission in yeast. Bzz1 contains an N-terminal
F-BAR (FES-CIP4 Homology and Bin/Amphiphysin/Rvs), a
central coiled-coil, and two C-terminal SH3 domains.
This model represents the second C-terminal SH3 domain.
SH3 domains are protein interaction domains that bind
to proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 51
Score = 43.6 bits (103), Expect = 2e-06
Identities = 19/49 (38%), Positives = 30/49 (61%), Gaps = 1/49 (2%)
Query: 43 AIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESY 91
A+Y++ ++ DE+S + GD I V ++ + GW GE+ G G FP SY
Sbjct: 4 ALYDYEAQGDDEISIRVGDRIAV-IRGDDGSGWTYGEINGVKGLFPTSY 51
Score = 25.9 bits (57), Expect = 5.2
Identities = 14/51 (27%), Positives = 25/51 (49%), Gaps = 2/51 (3%)
Query: 105 YYIAAYPYDSTEPGDLTFNQDEVIYVTKKE--NDWWTGTIGDRTGLFPSNY 153
Y A Y Y++ +++ + I V + + + W G I GLFP++Y
Sbjct: 1 YVEALYDYEAQGDDEISIRVGDRIAVIRGDDGSGWTYGEINGVKGLFPTSY 51
>gnl|CDD|212762 cd11828, SH3_ARHGEF9_like, Src homology 3 domain of ARHGEF9-like
Rho guanine nucleotide exchange factors. Members of
this family contain a SH3 domain followed by RhoGEF
(also called Dbl-homologous or DH) and Pleckstrin
Homology (PH) domains. They include the Rho guanine
nucleotide exchange factors ARHGEF9, ASEF (also called
ARHGEF4), ASEF2, and similar proteins. GEFs activate
small GTPases by exchanging bound GDP for free GTP.
ARHGEF9 specifically activates Cdc42, while both ASEF
and ASEF2 can activate Rac1 and Cdc42. ARHGEF9 is
highly expressed in the brain and it interacts with
gephyrin, a postsynaptic protein associated with GABA
and glycine receptors. ASEF plays a role in
angiogenesis and cell migration. ASEF2 is important in
cell migration and adhesion dynamics. ASEF exists in an
autoinhibited form and is activated upon binding of the
tumor suppressor APC (adenomatous polyposis coli),
leading to the activation of Rac1 or Cdc42. In its
autoinhibited form, the SH3 domain of ASEF forms an
extensive interface with the DH and PH domains,
blocking the Rac binding site. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles
in the cell including the regulation of enzymes,
changing the subcellular localization of signaling
pathway components, and mediating the formation of
multiprotein complex assemblies.
Length = 53
Score = 43.9 bits (104), Expect = 2e-06
Identities = 18/50 (36%), Positives = 31/50 (62%), Gaps = 2/50 (4%)
Query: 43 AIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYV 92
A+++ V+ + +EL F+ GD+I V + + W G +R + GWFP S+V
Sbjct: 4 ALWDHVTMDPEELGFKAGDVIEVLDMSDKD--WWWGSIRDEEGWFPASFV 51
Score = 40.8 bits (96), Expect = 3e-05
Identities = 17/51 (33%), Positives = 28/51 (54%), Gaps = 1/51 (1%)
Query: 105 YYIAAYPYDSTEPGDLTFNQDEVIYVTKKEN-DWWTGTIGDRTGLFPSNYV 154
A + + + +P +L F +VI V + DWW G+I D G FP+++V
Sbjct: 1 LAEALWDHVTMDPEELGFKAGDVIEVLDMSDKDWWWGSIRDEEGWFPASFV 51
Score = 35.4 bits (82), Expect = 0.002
Identities = 16/57 (28%), Positives = 27/57 (47%), Gaps = 5/57 (8%)
Query: 221 ATVLAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVKV 277
A L + E+L G +I + + WW G ++ + GWFPAS+V++
Sbjct: 2 AEALWDHVTMDPEELGFKAGDVIEVLDMSDKDWWWGSIR-----DEEGWFPASFVRL 53
>gnl|CDD|212853 cd11920, SH3_Sorbs2_1, First Src Homology 3 domain of Sorbin and
SH3 domain containing 2 (Sorbs2), also called
Arg-binding protein 2 (ArgBP2). Sorbs2 or ArgBP2 is an
adaptor protein containing one sorbin homology (SoHo)
and three SH3 domains. It regulates actin-dependent
processes including cell adhesion, morphology, and
migration. It is expressed in many tissues and is
abundant in the heart. Like vinexin, it is found in
focal adhesion where it interacts with vinculin and
afadin. It also localizes in epithelial cell stress
fibers and in cardiac muscle cell Z-discs. Sorbs2 has
been implicated to play roles in the signaling of
c-Arg, Akt, and Pyk2. Other interaction partners of
Sorbs2 include c-Abl, flotillin, spectrin, dynamin 1/2,
synaptojanin, PTP-PEST, among others. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 55
Score = 43.8 bits (103), Expect = 2e-06
Identities = 22/52 (42%), Positives = 31/52 (59%), Gaps = 2/52 (3%)
Query: 42 RAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVE 93
RA+Y+F ++ ELSF+ GD + + K + W GE G+ G FP SYVE
Sbjct: 4 RAVYDFKAQTSKELSFKKGDTVYILRK--IDQNWYEGEHHGRVGIFPISYVE 53
Score = 38.1 bits (88), Expect = 3e-04
Identities = 14/48 (29%), Positives = 28/48 (58%), Gaps = 1/48 (2%)
Query: 108 AAYPYDSTEPGDLTFNQDEVIYVTKK-ENDWWTGTIGDRTGLFPSNYV 154
A Y + + +L+F + + +Y+ +K + +W+ G R G+FP +YV
Sbjct: 5 AVYDFKAQTSKELSFKKGDTVYILRKIDQNWYEGEHHGRVGIFPISYV 52
Score = 37.3 bits (86), Expect = 4e-04
Identities = 19/58 (32%), Positives = 31/58 (53%), Gaps = 5/58 (8%)
Query: 221 ATVLAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVKVM 278
A + + A +S++LS +G + I +K W+EGE + VG FP SYV+ +
Sbjct: 3 ARAVYDFKAQTSKELSFKKGDTVYILRKIDQNWYEGEHHGR-----VGIFPISYVEKL 55
>gnl|CDD|212731 cd11797, SH3_DNMBP_N4, Fourth N-terminal Src homology 3 domain of
Dynamin Binding Protein, also called Tuba. DNMBP or
Tuba is a cdc42-specific guanine nucleotide exchange
factor (GEF) that contains four N-terminal SH3 domains,
a central RhoGEF [or Dbl homology (DH)] domain followed
by a Bin/Amphiphysin/Rvs (BAR) domain, and two
C-terminal SH3 domains. It provides a functional link
between dynamin and key regulatory proteins of the
actin cytoskeleton. It plays an important role in
regulating cell junction configuration. The four
N-terminal SH3 domains of DNMBP bind the GTPase
dynamin, which plays an important role in the fission
of endocytic vesicles. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles
in the cell including the regulation of enzymes,
changing the subcellular localization of signaling
pathway components, and mediating the formation of
multiprotein complex assemblies.
Length = 50
Score = 43.6 bits (103), Expect = 2e-06
Identities = 20/49 (40%), Positives = 28/49 (57%), Gaps = 2/49 (4%)
Query: 43 AIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESY 91
A+Y F + +EL F+ GD I + E GWL GEL+G+ G FP +
Sbjct: 4 ALYRFQALEPNELDFEVGDRIRI--IATLEDGWLEGELKGRRGIFPHRF 50
Score = 35.1 bits (81), Expect = 0.002
Identities = 15/50 (30%), Positives = 25/50 (50%), Gaps = 1/50 (2%)
Query: 105 YYIAAYPYDSTEPGDLTFNQDEVIYVTKK-ENDWWTGTIGDRTGLFPSNY 153
Y +A Y + + EP +L F + I + E+ W G + R G+FP +
Sbjct: 1 YGVALYRFQALEPNELDFEVGDRIRIIATLEDGWLEGELKGRRGIFPHRF 50
Score = 28.2 bits (63), Expect = 0.66
Identities = 15/51 (29%), Positives = 19/51 (37%), Gaps = 5/51 (9%)
Query: 221 ATVLAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFP 271
L + A +L G I I GW EGEL+ + G FP
Sbjct: 2 GVALYRFQALEPNELDFEVGDRIRIIATLEDGWLEGELKGR-----RGIFP 47
>gnl|CDD|212746 cd11812, SH3_AHI-1, Src Homology 3 domain of Abelson helper
integration site-1 (AHI-1). AHI-1, also called
Jouberin, is expressed in high levels in the brain,
gonad tissues, and skeletal muscle. It is an adaptor
protein that interacts with the small GTPase Rab8a and
regulates it distribution and function, affecting
cilium formation and vesicle transport. Mutations in
the AHI-1 gene can cause Joubert syndrome, a disorder
characterized by brainstem malformations, cerebellar
aplasia/hypoplasia, and retinal dystrophy. AHI-1
variation is also associated with susceptibility to
schizophrenia and type 2 diabetes mellitus progression.
AHI-1 contains WD40 and SH3 domains. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 52
Score = 43.7 bits (103), Expect = 2e-06
Identities = 22/51 (43%), Positives = 29/51 (56%), Gaps = 3/51 (5%)
Query: 43 AIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGEL-RGQTGWFPESYV 92
A+Y++ + DEL+ GDII V K N W G L GQ G+FP +YV
Sbjct: 4 ALYDYTANRSDELTIHRGDIIRVLYKDN--DNWWFGSLVNGQQGYFPANYV 52
Score = 43.3 bits (102), Expect = 3e-06
Identities = 22/52 (42%), Positives = 30/52 (57%), Gaps = 4/52 (7%)
Query: 224 LAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYV 275
L YTA S++L++ RG +I + K WW G L G Q G+FPA+YV
Sbjct: 5 LYDYTANRSDELTIHRGDIIRVLYKDNDNWWFGSL-VNG---QQGYFPANYV 52
Score = 41.0 bits (96), Expect = 2e-05
Identities = 19/50 (38%), Positives = 32/50 (64%), Gaps = 2/50 (4%)
Query: 107 IAAYPYDSTEPGDLTFNQDEVIYVTKKEND-WWTGTIGD-RTGLFPSNYV 154
+A Y Y + +LT ++ ++I V K+ND WW G++ + + G FP+NYV
Sbjct: 3 VALYDYTANRSDELTIHRGDIIRVLYKDNDNWWFGSLVNGQQGYFPANYV 52
>gnl|CDD|213009 cd12076, SH3_Tks4_2, Second Src homology 3 domain of Tyrosine
kinase substrate with four SH3 domains. Tks4, also
called SH3 and PX domain-containing protein 2B
(SH3PXD2B) or HOFI, is a Src substrate and scaffolding
protein that plays an important role in the formation of
podosomes and invadopodia, the dynamic actin-rich
structures that are related to cell migration and cancer
cell invasion. It is required in the formation of
functional podosomes, EGF-induced membrane ruffling, and
lamellipodia generation. It plays an important role in
cellular attachment and cell spreading. Tks4 is
essential for the localization of MT1-MMP (membrane-type
1 matrix metalloproteinase) to invadopodia. It contains
an N-terminal Phox homology (PX) domain and four SH3
domains. This model characterizes the second SH3 domain
of Tks4. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate affinity
and selectivity, preferentially to PxxP motifs. They
play versatile and diverse roles in the cell including
the regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 54
Score = 43.1 bits (101), Expect = 4e-06
Identities = 22/58 (37%), Positives = 38/58 (65%), Gaps = 5/58 (8%)
Query: 219 EIATVLAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVK 276
E TV+ PYTA ++++L +G ++ + +K GWW +++ +GK+ GW PASY+K
Sbjct: 1 EKYTVIYPYTARDQDEINLEKGAVVEVIQKNLEGWW--KIRYQGKE---GWAPASYLK 53
Score = 37.3 bits (86), Expect = 5e-04
Identities = 18/54 (33%), Positives = 34/54 (62%), Gaps = 2/54 (3%)
Query: 40 RYRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVE 93
+Y IY + +R+ DE++ + G ++ V +++N E GW +G+ GW P SY++
Sbjct: 2 KYTVIYPYTARDQDEINLEKGAVVEV-IQKNLE-GWWKIRYQGKEGWAPASYLK 53
Score = 26.5 bits (58), Expect = 2.7
Identities = 13/52 (25%), Positives = 24/52 (46%), Gaps = 1/52 (1%)
Query: 104 EYYIAAYPYDSTEPGDLTFNQDEVIYVTKKE-NDWWTGTIGDRTGLFPSNYV 154
E Y YPY + + ++ + V+ V +K WW + G P++Y+
Sbjct: 1 EKYTVIYPYTARDQDEINLEKGAVVEVIQKNLEGWWKIRYQGKEGWAPASYL 52
>gnl|CDD|212930 cd11997, SH3_PACSIN3, Src homology 3 domain of Protein kinase C
and Casein kinase Substrate in Neurons 3 (PACSIN3).
PACSIN 3 or Syndapin III (Synaptic dynamin-associated
protein III) is expressed ubiquitously and regulates
glucose uptake in adipocytes through its role in GLUT1
trafficking. It also modulates the subcellular
localization and stimulus-specific function of the
cation channel TRPV4. PACSINs act as regulators of
cytoskeletal and membrane dynamics. Vetebrates harbor
three isoforms with distinct expression patterns and
specific functions. PACSINs contain an N-terminal F-BAR
domain and a C-terminal SH3 domain. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 56
Score = 43.0 bits (101), Expect = 4e-06
Identities = 21/55 (38%), Positives = 34/55 (61%), Gaps = 2/55 (3%)
Query: 40 RYRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELR-GQTGWFPESYVE 93
R RA+Y++ + DELSF+ G+ ++ + + E GW G L G+ G +P +YVE
Sbjct: 3 RVRALYDYTGQEADELSFKAGEELL-KIGEEDEQGWCKGRLLSGRIGLYPANYVE 56
Score = 28.4 bits (63), Expect = 0.61
Identities = 17/50 (34%), Positives = 26/50 (52%), Gaps = 3/50 (6%)
Query: 108 AAYPYDSTEPGDLTFNQDEVIYVTKKEND--WWTGTI-GDRTGLFPSNYV 154
A Y Y E +L+F E + +E++ W G + R GL+P+NYV
Sbjct: 6 ALYDYTGQEADELSFKAGEELLKIGEEDEQGWCKGRLLSGRIGLYPANYV 55
>gnl|CDD|212751 cd11817, SH3_Eve1_4, Fourth Src homology 3 domain of ADAM-binding
protein Eve-1. Eve-1, also called SH3
domain-containing protein 19 (SH3D19) or EEN-binding
protein (EBP), exists in multiple alternatively spliced
isoforms. The longest isoform contains five SH3 domain
in the C-terminal region and seven proline-rich motifs
in the N-terminal region. It is abundantly expressed in
skeletal muscle and heart, and may be involved in
regulating the activity of ADAMs (A disintegrin and
metalloproteases). Eve-1 interacts with EEN, an
endophilin involved in endocytosis and may be the
target of the MLL-EEN fusion protein that is implicated
in leukemogenesis. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP
motifs. They play versatile and diverse roles in the
cell including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 50
Score = 42.9 bits (101), Expect = 4e-06
Identities = 20/49 (40%), Positives = 29/49 (59%), Gaps = 2/49 (4%)
Query: 43 AIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESY 91
A+Y+F ++LSFQ GD I+V +AE W G L G+ G FP ++
Sbjct: 4 ALYDFTGETEEDLSFQRGDRILVTEHLDAE--WSRGRLNGREGIFPRAF 50
Score = 39.8 bits (93), Expect = 4e-05
Identities = 14/48 (29%), Positives = 25/48 (52%), Gaps = 1/48 (2%)
Query: 107 IAAYPYDSTEPGDLTFNQDEVIYVTKK-ENDWWTGTIGDRTGLFPSNY 153
+A Y + DL+F + + I VT+ + +W G + R G+FP +
Sbjct: 3 VALYDFTGETEEDLSFQRGDRILVTEHLDAEWSRGRLNGREGIFPRAF 50
Score = 34.4 bits (79), Expect = 0.004
Identities = 15/54 (27%), Positives = 23/54 (42%), Gaps = 5/54 (9%)
Query: 221 ATVLAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASY 274
A L +T + E LS RG I++ + W G L + G FP ++
Sbjct: 2 AVALYDFTGETEEDLSFQRGDRILVTEHLDAEWSRGRLNGRE-----GIFPRAF 50
>gnl|CDD|212897 cd11964, SH3_STAM1, Src homology 3 domain of Signal Transducing
Adaptor Molecule 1. STAM1 is part of the endosomal
sorting complex required for transport (ESCRT-0) and is
involved in sorting ubiquitinated cargo proteins from
the endosome. It may also be involved in the regulation
of IL2 and GM-CSF mediated signaling, and has been
implicated in neural cell survival. STAMs were
discovered as proteins that are highly phosphorylated
following cytokine and growth factor stimulation. They
function in cytokine signaling and surface receptor
degradation, as well as regulate Golgi morphology. They
associate with many proteins including Jak2 and Jak3
tyrosine kinases, Hrs, AMSH, and UBPY. STAM adaptor
proteins contain VHS (Vps27, Hrs, STAM homology),
ubiquitin interacting (UIM), and SH3 domains. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 55
Score = 43.0 bits (101), Expect = 4e-06
Identities = 22/54 (40%), Positives = 34/54 (62%), Gaps = 2/54 (3%)
Query: 39 RRYRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYV 92
R+ RAIY+F + +EL+F+ GDII + +++P W GE TG FP ++V
Sbjct: 1 RKVRAIYDFEAAEDNELTFKAGDII--TILDDSDPNWWKGETPQGTGLFPSNFV 52
Score = 39.5 bits (92), Expect = 8e-05
Identities = 18/48 (37%), Positives = 28/48 (58%), Gaps = 1/48 (2%)
Query: 108 AAYPYDSTEPGDLTFNQDEVIYVTKKEN-DWWTGTIGDRTGLFPSNYV 154
A Y +++ E +LTF ++I + + +WW G TGLFPSN+V
Sbjct: 5 AIYDFEAAEDNELTFKAGDIITILDDSDPNWWKGETPQGTGLFPSNFV 52
Score = 26.4 bits (58), Expect = 2.8
Identities = 13/49 (26%), Positives = 23/49 (46%), Gaps = 5/49 (10%)
Query: 227 YTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYV 275
+ A +L+ G +I I + WW+GE + G FP+++V
Sbjct: 9 FEAAEDNELTFKAGDIITILDDSDPNWWKGE-----TPQGTGLFPSNFV 52
>gnl|CDD|212834 cd11901, SH3_Nck1_2, Second Src Homology 3 domain of Nck1 adaptor
protein. Nck1 (also called Nckalpha) plays a crucial
role in connecting signaling pathways of tyrosine kinase
receptors and important effectors in actin dynamics and
cytoskeletal remodeling. It binds and activates RasGAP,
resulting in the downregulation of Ras. It is also
involved in the signaling of endothilin-mediated
inhibition of cell migration. Nck adaptor proteins
regulate actin cytoskeleton dynamics by linking
proline-rich effector molecules to protein tyrosine
kinases and phosphorylated signaling intermediates. They
contain three SH3 domains and a C-terminal SH2 domain.
They function downstream of the PDGFbeta receptor and
are involved in Rho GTPase signaling and actin dynamics.
Vertebrates contain two Nck adaptor proteins: Nck1 (also
called Nckalpha) and Nck2, which show partly overlapping
functions but also bind distinct targets. The second SH3
domain of Nck appears to prefer ligands containing the
APxxPxR motif. SH3 domains are protein interaction
domains that usually bind to proline-rich ligands with
moderate affinity and selectivity, preferentially a PxxP
motif. They play versatile and diverse roles in the cell
including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 55
Score = 42.7 bits (100), Expect = 5e-06
Identities = 22/55 (40%), Positives = 32/55 (58%), Gaps = 5/55 (9%)
Query: 221 ATVLAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYV 275
A V YTA ++LSL +G +++ +K + GWW G QVGWFP++YV
Sbjct: 4 AYVKFNYTAEREDELSLVKGTKVIVMEKCSDGWWRGSYNG-----QVGWFPSNYV 53
Score = 34.2 bits (78), Expect = 0.006
Identities = 17/48 (35%), Positives = 24/48 (50%), Gaps = 2/48 (4%)
Query: 45 YEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYV 92
+ + + DELS G ++V + GW G GQ GWFP +YV
Sbjct: 8 FNYTAEREDELSLVKGTKVIV--MEKCSDGWWRGSYNGQVGWFPSNYV 53
Score = 31.9 bits (72), Expect = 0.036
Identities = 13/29 (44%), Positives = 18/29 (62%)
Query: 126 EVIYVTKKENDWWTGTIGDRTGLFPSNYV 154
+VI + K + WW G+ + G FPSNYV
Sbjct: 25 KVIVMEKCSDGWWRGSYNGQVGWFPSNYV 53
>gnl|CDD|212896 cd11963, SH3_STAM2, Src homology 3 domain of Signal Transducing
Adaptor Molecule 2. STAM2, also called EAST (Epidermal
growth factor receptor-associated protein with SH3 and
TAM domain) or Hbp (Hrs binding protein), is part of the
endosomal sorting complex required for transport
(ESCRT-0). It plays a role in sorting mono-ubiquinated
endosomal cargo for trafficking to the lysosome for
degradation. It is also involved in the regulation of
exocytosis. STAMs were discovered as proteins that are
highly phosphorylated following cytokine and growth
factor stimulation. They function in cytokine signaling
and surface receptor degradation, as well as regulate
Golgi morphology. They associate with many proteins
including Jak2 and Jak3 tyrosine kinases, Hrs, AMSH, and
UBPY. STAM adaptor proteins contain VHS (Vps27, Hrs,
STAM homology), ubiquitin interacting (UIM), and SH3
domains. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate affinity
and selectivity, preferentially to PxxP motifs. They
play versatile and diverse roles in the cell including
the regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 57
Score = 42.7 bits (100), Expect = 5e-06
Identities = 19/48 (39%), Positives = 27/48 (56%), Gaps = 1/48 (2%)
Query: 108 AAYPYDSTEPGDLTFNQDEVIYVTKKEN-DWWTGTIGDRTGLFPSNYV 154
A Y +++ E +LTF E+I V + +WW G GLFPSN+V
Sbjct: 6 ALYDFEAVEDNELTFKHGEIIIVLDDSDANWWKGENHRGVGLFPSNFV 53
Score = 40.4 bits (94), Expect = 4e-05
Identities = 19/54 (35%), Positives = 33/54 (61%), Gaps = 2/54 (3%)
Query: 39 RRYRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYV 92
R+ RA+Y+F + +EL+F+ G+II+ V +++ W GE G FP ++V
Sbjct: 2 RKVRALYDFEAVEDNELTFKHGEIII--VLDDSDANWWKGENHRGVGLFPSNFV 53
Score = 35.0 bits (80), Expect = 0.003
Identities = 15/52 (28%), Positives = 27/52 (51%), Gaps = 5/52 (9%)
Query: 224 LAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYV 275
L + A +L+ G++I++ + WW+GE R VG FP+++V
Sbjct: 7 LYDFEAVEDNELTFKHGEIIIVLDDSDANWWKGE-----NHRGVGLFPSNFV 53
>gnl|CDD|213006 cd12073, SH3_HS1, Src homology 3 domain of Hematopoietic lineage
cell-specific protein 1. HS1, also called HCLS1
(hematopoietic cell-specific Lyn substrate 1), is a
cortactin homolog expressed specifically in
hematopoietic cells. It is an actin regulatory protein
that binds the Arp2/3 complex and stabilizes branched
actin filaments. It is required for cell spreading and
signaling in lymphocytes. It regulates cytoskeletal
remodeling that controls lymphocyte trafficking, and it
also affects tissue invasion and infiltration of
leukemic B cells. Like cortactin, HS1 contains an
N-terminal acidic domain, several copies of a repeat
domain found in cortactin and HS1, a proline-rich
region, and a C-terminal SH3 domain. The N-terminal
region binds the Arp2/3 complex and F-actin, while the
C-terminal region acts as an adaptor or scaffold that
can connect varied proteins that bind the SH3 domain
within the actin network. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles
in the cell including the regulation of enzymes,
changing the subcellular localization of signaling
pathway components, and mediating the formation of
multiprotein complex assemblies.
Length = 55
Score = 42.9 bits (101), Expect = 5e-06
Identities = 20/55 (36%), Positives = 27/55 (49%), Gaps = 10/55 (18%)
Query: 43 AIYEFVSRNGDELSFQPGDII----MVPVKQNAEPGWLAGELRGQTGWFPESYVE 93
A+Y++ DE+SF P + I MV + GW G G G FP +YVE
Sbjct: 5 ALYDYQGEGDDEISFDPQETITDIEMV------DEGWWKGTCHGHRGLFPANYVE 53
Score = 40.2 bits (94), Expect = 4e-05
Identities = 17/49 (34%), Positives = 25/49 (51%), Gaps = 1/49 (2%)
Query: 107 IAAYPYDSTEPGDLTFNQDEVI-YVTKKENDWWTGTIGDRTGLFPSNYV 154
+A Y Y +++F+ E I + + WW GT GLFP+NYV
Sbjct: 4 VALYDYQGEGDDEISFDPQETITDIEMVDEGWWKGTCHGHRGLFPANYV 52
Score = 33.3 bits (76), Expect = 0.010
Identities = 15/58 (25%), Positives = 25/58 (43%), Gaps = 5/58 (8%)
Query: 221 ATVLAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVKVM 278
A L Y +++S + I + GWW+G G FPA+YV+++
Sbjct: 3 AVALYDYQGEGDDEISFDPQETITDIEMVDEGWWKGTCHGH-----RGLFPANYVELL 55
>gnl|CDD|212725 cd11791, SH3_UBASH3, Src homology 3 domain of
Ubiquitin-associated and SH3 domain-containing
proteins, also called TULA (T cell Ubiquitin LigAnd)
family of proteins. UBASH3 or TULA proteins are also
referred to as Suppressor of T cell receptor Signaling
(STS) proteins. They contain an N-terminal UBA domain,
a central SH3 domain, and a C-terminal histidine
phosphatase domain. They bind c-Cbl through the SH3
domain and to ubiquitin via UBA. In some vertebrates,
there are two TULA family proteins, called UBASH3A
(also called TULA or STS-2) and UBASH3B (also called
TULA-2 or STS-1), which show partly overlapping as well
as distinct functions. UBASH3B is widely expressed
while UBASH3A is only found in lymphoid cells. UBASH3A
facilitates apoptosis induced in T cells through its
interaction with the apoptosis-inducing factor AIF.
UBASH3B is an active phosphatase while UBASH3A is not.
SH3 domains are protein interaction domains that bind
to proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 59
Score = 42.7 bits (101), Expect = 5e-06
Identities = 20/57 (35%), Positives = 30/57 (52%), Gaps = 4/57 (7%)
Query: 41 YRAIYEFVSRNGDELSFQPGDIIMVPVKQ--NAEPGWLAG--ELRGQTGWFPESYVE 93
R +Y + + DEL PGD I V ++ ++ GW+ G L G +G PE+Y E
Sbjct: 2 LRVLYPYTPQEEDELELVPGDYIYVSPEELDSSSDGWVEGTSWLTGCSGLLPENYTE 58
Score = 30.3 bits (69), Expect = 0.15
Identities = 17/57 (29%), Positives = 22/57 (38%), Gaps = 7/57 (12%)
Query: 223 VLAPYTATSSEQLSLSRGQLIMIRKKTTT----GWWEGELQAKGKKRQVGWFPASYV 275
VL PYT ++L L G I + + GW EG G G P +Y
Sbjct: 4 VLYPYTPQEEDELELVPGDYIYVSPEELDSSSDGWVEGTSWLTGCS---GLLPENYT 57
Score = 28.4 bits (64), Expect = 0.77
Identities = 18/56 (32%), Positives = 23/56 (41%), Gaps = 15/56 (26%)
Query: 110 YPYDSTEPGDLTFNQDEVIYVTKKEND-----------WWTGTIGDRTGLFPSNYV 154
YPY E +L + IYV+ +E D W TG +GL P NY
Sbjct: 6 YPYTPQEEDELELVPGDYIYVSPEELDSSSDGWVEGTSWLTGC----SGLLPENYT 57
>gnl|CDD|212830 cd11897, SH3_SNX18, Src Homology 3 domain of Sorting nexin 18.
SNX18 is localized to peripheral endosomal structures,
and acts in a trafficking pathway that is
clathrin-independent but relies on AP-1 and PACS1. It
binds FIP5 and is required for apical lumen formation.
It may also play a role in axonal elongation. SNXs are
Phox homology (PX) domain containing proteins that are
involved in regulating membrane traffic and protein
sorting in the endosomal system. SNX18 also contains
BAR and SH3 domains. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles
in the cell including the regulation of enzymes,
changing the subcellular localization of signaling
pathway components, and mediating the formation of
multiprotein complex assemblies.
Length = 55
Score = 42.7 bits (100), Expect = 5e-06
Identities = 24/55 (43%), Positives = 34/55 (61%), Gaps = 2/55 (3%)
Query: 40 RYRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAG-ELRGQTGWFPESYVE 93
R RA+Y+F S N E+S + +++ + +Q+ E GWL G RG G FP SYVE
Sbjct: 1 RARALYDFRSENPGEISLREHEVLSLCSEQDIE-GWLEGVNSRGDRGLFPASYVE 54
Score = 30.7 bits (69), Expect = 0.11
Identities = 17/51 (33%), Positives = 31/51 (60%), Gaps = 5/51 (9%)
Query: 108 AAYPYDSTEPGDLTFNQDEVIYVTKKEN-DWW---TGTIGDRTGLFPSNYV 154
A Y + S PG+++ + EV+ + +++ + W + GDR GLFP++YV
Sbjct: 4 ALYDFRSENPGEISLREHEVLSLCSEQDIEGWLEGVNSRGDR-GLFPASYV 53
Score = 25.3 bits (55), Expect = 7.0
Identities = 17/58 (29%), Positives = 33/58 (56%), Gaps = 5/58 (8%)
Query: 221 ATVLAPYTATSSEQLSLSRGQLI-MIRKKTTTGWWEGELQAKGKKRQVGWFPASYVKV 277
A L + + + ++SL +++ + ++ GW EG + ++G + G FPASYV+V
Sbjct: 2 ARALYDFRSENPGEISLREHEVLSLCSEQDIEGWLEG-VNSRGDR---GLFPASYVEV 55
>gnl|CDD|212749 cd11815, SH3_Eve1_2, Second Src homology 3 domain of ADAM-binding
protein Eve-1. Eve-1, also called SH3 domain-containing
protein 19 (SH3D19) or EEN-binding protein (EBP), exists
in multiple alternatively spliced isoforms. The longest
isoform contains five SH3 domain in the C-terminal
region and seven proline-rich motifs in the N-terminal
region. It is abundantly expressed in skeletal muscle
and heart, and may be involved in regulating the
activity of ADAMs (A disintegrin and metalloproteases).
Eve-1 interacts with EEN, an endophilin involved in
endocytosis and may be the target of the MLL-EEN fusion
protein that is implicated in leukemogenesis. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 52
Score = 42.6 bits (100), Expect = 6e-06
Identities = 14/37 (37%), Positives = 26/37 (70%), Gaps = 1/37 (2%)
Query: 119 DLTFNQDEVIYVTKK-ENDWWTGTIGDRTGLFPSNYV 154
DL+ N E++Y+ +K + +W+ G + TG+FP+N+V
Sbjct: 15 DLSLNSGEIVYLLEKIDTEWYRGKCKNTTGIFPANHV 51
Score = 38.7 bits (90), Expect = 1e-04
Identities = 20/56 (35%), Positives = 32/56 (57%), Gaps = 5/56 (8%)
Query: 221 ATVLAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVK 276
A VL + A S+ LSL+ G+++ + +K T W+ G+ K G FPA++VK
Sbjct: 2 AVVLHDFPAEHSDDLSLNSGEIVYLLEKIDTEWYRGKC-----KNTTGIFPANHVK 52
Score = 36.0 bits (83), Expect = 0.001
Identities = 15/50 (30%), Positives = 30/50 (60%), Gaps = 2/50 (4%)
Query: 44 IYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVE 93
+++F + + D+LS G+I+ + K + E W G+ + TG FP ++V+
Sbjct: 5 LHDFPAEHSDDLSLNSGEIVYLLEKIDTE--WYRGKCKNTTGIFPANHVK 52
>gnl|CDD|212759 cd11825, SH3_PLCgamma, Src homology 3 domain of Phospholipase C
(PLC) gamma. PLC catalyzes the hydrolysis of
phosphatidylinositol (4,5)-bisphosphate [PtdIns(4,5)P2]
to produce Ins(1,4,5)P3 and diacylglycerol (DAG) in
response to various receptors. Ins(1,4,5)P3 initiates
the calcium signaling cascade while DAG functions as an
activator of PKC. PLCgamma catalyzes this reaction in
tyrosine kinase-dependent signaling pathways. It is
activated and recruited to its substrate at the
membrane. Vertebrates contain two forms of PLCgamma,
PLCgamma1, which is widely expressed, and PLCgamma2,
which is primarily found in haematopoietic cells.
PLCgamma contains a Pleckstrin homology (PH) domain
followed by an elongation factor (EF) domain, two
catalytic regions of PLC domains that flank two tandem
SH2 domains, followed by a SH3 domain and C2 domain. The
SH3 domain of PLCgamma1 directly interacts with
dynamin-1 and can serve as a guanine nucleotide exchange
factor (GEF). It also interacts with Cbl, inhibiting its
phosphorylation and activity. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 54
Score = 42.3 bits (100), Expect = 6e-06
Identities = 18/49 (36%), Positives = 27/49 (55%), Gaps = 2/49 (4%)
Query: 108 AAYPYDSTEPGDLTFNQDEVIY-VTKKENDWWTGTIGDR-TGLFPSNYV 154
A Y Y + P +L+F + +I V K++ WW G G + FP+NYV
Sbjct: 4 ALYDYRAQRPDELSFCKHAIITNVEKEDGGWWRGDYGGKKQKWFPANYV 52
Score = 41.5 bits (98), Expect = 1e-05
Identities = 19/50 (38%), Positives = 28/50 (56%), Gaps = 4/50 (8%)
Query: 227 YTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVK 276
Y A ++LS + +I +K GWW G+ G K+Q WFPA+YV+
Sbjct: 8 YRAQRPDELSFCKHAIITNVEKEDGGWWRGDY---GGKKQ-KWFPANYVE 53
Score = 41.5 bits (98), Expect = 1e-05
Identities = 20/53 (37%), Positives = 31/53 (58%), Gaps = 3/53 (5%)
Query: 42 RAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQ-TGWFPESYVE 93
+A+Y++ ++ DELSF II K++ GW G+ G+ WFP +YVE
Sbjct: 3 KALYDYRAQRPDELSFCKHAIITNVEKEDG--GWWRGDYGGKKQKWFPANYVE 53
>gnl|CDD|212790 cd11856, SH3_p47phox_like, Src homology 3 domains of the p47phox
subunit of NADPH oxidase and similar domains. This
family is composed of the tandem SH3 domains of p47phox
subunit of NADPH oxidase and Nox Organizing protein 1
(NoxO1), the four SH3 domains of Tks4 (Tyr kinase
substrate with four SH3 domains), the five SH3 domains
of Tks5, the SH3 domain of obscurin, Myosin-I, and
similar domains. Most members of this group also contain
Phox homology (PX) domains, except for obscurin and
Myosin-I. p47phox and NoxO1 are regulators of the
phagocytic NADPH oxidase complex (also called Nox2 or
gp91phox) and nonphagocytic NADPH oxidase Nox1,
respectively. They play roles in the activation of their
respective NADPH oxidase, which catalyzes the transfer
of electrons from NADPH to molecular oxygen to form
superoxide. Tks proteins are Src substrates and
scaffolding proteins that play important roles in the
formation of podosomes and invadopodia, the dynamic
actin-rich structures that are related to cell migration
and cancer cell invasion. Obscurin is a giant muscle
protein that plays important roles in the organization
and assembly of the myofibril and the sarcoplasmic
reticulum. Type I myosins (Myosin-I) are actin-dependent
motors in endocytic actin structures and actin patches.
They play roles in membrane traffic in endocytic and
secretory pathways, cell motility, and mechanosensing.
Myosin-I contains an N-terminal actin-activated ATPase,
a phospholipid-binding TH1 (tail homology 1) domain, and
a C-terminal extension which includes an F-actin-binding
TH2 domain, an SH3 domain, and an acidic peptide that
participates in activating the Arp2/3complex. The SH3
domain of myosin-I is required for myosin-I-induced
actin polymerization. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 53
Score = 42.2 bits (100), Expect = 6e-06
Identities = 15/52 (28%), Positives = 30/52 (57%), Gaps = 1/52 (1%)
Query: 106 YIAAYPYDSTEPGDLTFNQDEVIYVTKK-ENDWWTGTIGDRTGLFPSNYVVP 156
Y+A Y++ +++ + EV+ V +K ++ WW GD+ G P++Y+ P
Sbjct: 2 YVAIADYEAQGDDEISLQEGEVVEVLEKNDSGWWYVRKGDKEGWVPASYLEP 53
Score = 41.9 bits (99), Expect = 1e-05
Identities = 19/54 (35%), Positives = 30/54 (55%), Gaps = 2/54 (3%)
Query: 41 YRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVEP 94
Y AI ++ ++ DE+S Q G++ V V + + GW + GW P SY+EP
Sbjct: 2 YVAIADYEAQGDDEISLQEGEV--VEVLEKNDSGWWYVRKGDKEGWVPASYLEP 53
Score = 39.2 bits (92), Expect = 8e-05
Identities = 17/55 (30%), Positives = 30/55 (54%), Gaps = 5/55 (9%)
Query: 222 TVLAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVK 276
+A Y A +++SL G+++ + +K +GWW K + GW PASY++
Sbjct: 3 VAIADYEAQGDDEISLQEGEVVEVLEKNDSGWWYVR-----KGDKEGWVPASYLE 52
>gnl|CDD|212835 cd11902, SH3_Nck2_2, Second Src Homology 3 domain of Nck2 adaptor
protein. Nck2 (also called Nckbeta or Growth factor
receptor-bound protein 4, Grb4) plays a crucial role in
connecting signaling pathways of tyrosine kinase
receptors and important effectors in actin dynamics and
cytoskeletal remodeling. It binds neuronal signaling
proteins such as ephrinB and Disabled-1 (Dab-1)
exclusively. Nck adaptor proteins regulate actin
cytoskeleton dynamics by linking proline-rich effector
molecules to protein tyrosine kinases and phosphorylated
signaling intermediates. They contain three SH3 domains
and a C-terminal SH2 domain. They function downstream of
the PDGFbeta receptor and are involved in Rho GTPase
signaling and actin dynamics. Vertebrates contain two
Nck adaptor proteins: Nck1 (also called Nckalpha) and
Nck2, which show partly overlapping functions but also
bind distinct targets. The second SH3 domain of Nck
appears to prefer ligands containing the APxxPxR motif.
SH3 domains are protein interaction domains that usually
bind to proline-rich ligands with moderate affinity and
selectivity, preferentially a PxxP motif. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 55
Score = 42.3 bits (99), Expect = 7e-06
Identities = 20/55 (36%), Positives = 30/55 (54%), Gaps = 5/55 (9%)
Query: 221 ATVLAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYV 275
A V Y A ++LSL +G + + +K + GWW G Q+GWFP++YV
Sbjct: 3 AFVKFAYVAEREDELSLVKGSRVTVMEKCSDGWWRGSYNG-----QIGWFPSNYV 52
Score = 36.1 bits (83), Expect = 0.001
Identities = 19/48 (39%), Positives = 24/48 (50%), Gaps = 2/48 (4%)
Query: 45 YEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYV 92
+ +V+ DELS G V V + GW G GQ GWFP +YV
Sbjct: 7 FAYVAEREDELSLVKGS--RVTVMEKCSDGWWRGSYNGQIGWFPSNYV 52
Score = 30.7 bits (69), Expect = 0.086
Identities = 16/50 (32%), Positives = 26/50 (52%), Gaps = 1/50 (2%)
Query: 107 IAAYPYDSTEPGDLTFNQDEVIYVTKKEND-WWTGTIGDRTGLFPSNYVV 155
+ Y + +L+ + + V +K +D WW G+ + G FPSNYVV
Sbjct: 4 FVKFAYVAEREDELSLVKGSRVTVMEKCSDGWWRGSYNGQIGWFPSNYVV 53
>gnl|CDD|212719 cd11785, SH3_SH3RF_C, C-terminal (Fourth) Src Homology 3 domain of
SH3 domain containing ring finger 1 (SH3RF1), SH3RF3,
and similar domains. SH3RF1 (or POSH) and SH3RF3 (or
POSH2) are scaffold proteins that function as E3
ubiquitin-protein ligases. They contain an N-terminal
RING finger domain and four SH3 domains. This model
represents the fourth SH3 domain, located at the
C-terminus of SH3RF1 and SH3RF3, and similar domains.
SH3RF1 plays a role in calcium homeostasis through the
control of the ubiquitin domain protein Herp. It may
also have a role in regulating death receptor mediated
and JNK mediated apoptosis. SH3RF3 interacts with
p21-activated kinase 2 (PAK2) and GTP-loaded Rac1. It
may play a role in regulating JNK mediated apoptosis in
certain conditions. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP motifs.
They play versatile and diverse roles in the cell
including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 55
Score = 42.5 bits (100), Expect = 7e-06
Identities = 21/54 (38%), Positives = 30/54 (55%), Gaps = 3/54 (5%)
Query: 223 VLAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVK 276
V+ PY S +L L G ++ + KK GW++G LQ GK G FP S+V+
Sbjct: 4 VIVPYPPQSEAELELKEGDIVFVHKKREDGWFKGTLQRTGK---TGLFPGSFVE 54
Score = 42.1 bits (99), Expect = 9e-06
Identities = 24/57 (42%), Positives = 33/57 (57%), Gaps = 4/57 (7%)
Query: 40 RYRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELR--GQTGWFPESYVEP 94
RYR I + ++ EL + GDI+ V K+ E GW G L+ G+TG FP S+VE
Sbjct: 1 RYRVIVPYPPQSEAELELKEGDIVFVHKKR--EDGWFKGTLQRTGKTGLFPGSFVES 55
Score = 35.5 bits (82), Expect = 0.002
Identities = 16/49 (32%), Positives = 27/49 (55%), Gaps = 3/49 (6%)
Query: 111 PYDSTEPGDLTFNQDEVIYVTKKEND-WWTGTI--GDRTGLFPSNYVVP 156
PY +L + ++++V KK D W+ GT+ +TGLFP ++V
Sbjct: 7 PYPPQSEAELELKEGDIVFVHKKREDGWFKGTLQRTGKTGLFPGSFVES 55
>gnl|CDD|212792 cd11858, SH3_Myosin-I_fungi, Src homology 3 domain of Type I fungal
Myosins. Type I myosins (myosin-I) are actin-dependent
motors in endocytic actin structures and actin patches.
They play roles in membrane traffic in endocytic and
secretory pathways, cell motility, and mechanosensing.
Saccharomyces cerevisiae has two myosins-I, Myo3 and
Myo5, which are involved in endocytosis and the
polarization of the actin cytoskeleton. Myosin-I
contains an N-terminal actin-activated ATPase, a
phospholipid-binding TH1 (tail homology 1) domain, and a
C-terminal extension which includes an F-actin-binding
TH2 domain, an SH3 domain, and an acidic peptide that
participates in activating the Arp2/3complex. The SH3
domain of myosin-I is required for myosin-I-induced
actin polymerization. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 55
Score = 42.0 bits (99), Expect = 9e-06
Identities = 15/54 (27%), Positives = 28/54 (51%), Gaps = 3/54 (5%)
Query: 106 YIAAYPYDSTEPGDLTFNQDEVIYVTKKE-NDWWTGTIGDRT--GLFPSNYVVP 156
Y A Y + + +L+ +D+++Y+ +KE N WW D + G P+ Y+
Sbjct: 2 YKALYDFAGSVANELSLKKDDIVYIVQKEDNGWWLAKKLDESKEGWVPAAYLEE 55
Score = 38.5 bits (90), Expect = 1e-04
Identities = 20/57 (35%), Positives = 32/57 (56%), Gaps = 4/57 (7%)
Query: 40 RYRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGW-LAGELRGQT-GWFPESYVEP 94
Y+A+Y+F +ELS + DI+ + K++ GW LA +L GW P +Y+E
Sbjct: 1 TYKALYDFAGSVANELSLKKDDIVYIVQKEDN--GWWLAKKLDESKEGWVPAAYLEE 55
Score = 33.1 bits (76), Expect = 0.012
Identities = 16/56 (28%), Positives = 29/56 (51%), Gaps = 3/56 (5%)
Query: 221 ATVLAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVK 276
L + + + +LSL + ++ I +K GWW L K + + GW PA+Y++
Sbjct: 2 YKALYDFAGSVANELSLKKDDIVYIVQKEDNGWW---LAKKLDESKEGWVPAAYLE 54
>gnl|CDD|212922 cd11989, SH3_Intersectin1_2, Second Src homology 3 domain (or
SH3B) of Intersectin-1. Intersectin-1 (ITSN1) is an
adaptor protein that functions in exo- and endocytosis,
actin cytoskeletal reorganization, and signal
transduction. It plays a role in clathrin-coated pit
(CCP) formation. It binds to many proteins through its
multidomain structure and facilitate the assembly of
multimeric complexes. ITSN1 localizes in membranous
organelles, CCPs, the Golgi complex, and may be
involved in the cell membrane trafficking system. It
exists in alternatively spliced short and long
isoforms. The short isoform contains two Eps15 homology
domains (EH1 and EH2), a coiled-coil region and five
SH3 domains (SH3A-E), while the long isoform, in
addition, contains RhoGEF (also called Dbl-homologous
or DH), Pleckstrin homology (PH) and C2 domains. The
second SH3 domain (or SH3B) of ITSN1 has been shown to
bind WNK and CdGAP. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP
motifs. They play versatile and diverse roles in the
cell including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 52
Score = 42.0 bits (98), Expect = 9e-06
Identities = 20/52 (38%), Positives = 34/52 (65%), Gaps = 3/52 (5%)
Query: 42 RAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVE 93
+A+Y + ++ + L+F D+I V +Q+ W GE++GQ GWFP+SYV+
Sbjct: 3 QALYPWRAKKDNHLNFNKNDVITVLEQQDM---WWFGEVQGQKGWFPKSYVK 51
Score = 41.2 bits (96), Expect = 2e-05
Identities = 17/47 (36%), Positives = 30/47 (63%)
Query: 108 AAYPYDSTEPGDLTFNQDEVIYVTKKENDWWTGTIGDRTGLFPSNYV 154
A YP+ + + L FN+++VI V ++++ WW G + + G FP +YV
Sbjct: 4 ALYPWRAKKDNHLNFNKNDVITVLEQQDMWWFGEVQGQKGWFPKSYV 50
Score = 36.6 bits (84), Expect = 7e-04
Identities = 20/57 (35%), Positives = 30/57 (52%), Gaps = 6/57 (10%)
Query: 221 ATVLAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVKV 277
A L P+ A L+ ++ +I + ++ WW GE+Q Q GWFP SYVK+
Sbjct: 2 AQALYPWRAKKDNHLNFNKNDVITVLEQQDM-WWFGEVQG-----QKGWFPKSYVKL 52
>gnl|CDD|212880 cd11947, SH3_GRAP2_N, N-terminal Src homology 3 domain of
GRB2-related adaptor protein 2. GRAP2 is also called
GADS (GRB2-related adapter downstream of Shc), GrpL,
GRB2L, Mona, or GRID (Grb2-related protein with insert
domain). It is expressed specifically in the
hematopoietic system. It plays an important role in T
cell receptor (TCR) signaling by promoting the
formation of the SLP-76:LAT complex, which couples the
TCR to the Ras pathway. It also have roles in
antigen-receptor and tyrosine kinase mediated
signaling. GRAP2 is unique from other GRB2-like adaptor
proteins in that it can be regulated by caspase
cleavage. It contains an N-terminal SH3 domain, a
central SH2 domain, and a C-terminal SH3 domain. The
N-terminal SH3 domain of the related protein GRB2 binds
to Sos and Sos-derived proline-rich peptides. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 52
Score = 41.7 bits (98), Expect = 1e-05
Identities = 16/52 (30%), Positives = 30/52 (57%), Gaps = 3/52 (5%)
Query: 42 RAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVE 93
R ++F + DELSF+ GD++ + + W EL G+ G+ P+++V+
Sbjct: 3 RGKFDFTASGEDELSFKKGDVLKILSSDDI---WFKAELNGEEGYVPKNFVD 51
Score = 30.9 bits (70), Expect = 0.079
Identities = 8/47 (17%), Positives = 23/47 (48%)
Query: 108 AAYPYDSTEPGDLTFNQDEVIYVTKKENDWWTGTIGDRTGLFPSNYV 154
+ + ++ +L+F + +V+ + ++ W+ + G P N+V
Sbjct: 4 GKFDFTASGEDELSFKKGDVLKILSSDDIWFKAELNGEEGYVPKNFV 50
>gnl|CDD|212849 cd11916, SH3_Sorbs1_3, Third (or C-terminal) Src Homology 3
domain of Sorbin and SH3 domain containing 1 (Sorbs1),
also called ponsin. Sorbs1 is also called ponsin,
SH3P12, or CAP (c-Cbl associated protein). It is an
adaptor protein containing one sorbin homology (SoHo)
and three SH3 domains. It binds Cbl and plays a major
role in regulating the insulin signaling pathway by
enhancing insulin-induced phosphorylation of Cbl.
Sorbs1, like vinexin, localizes at cell-ECM and
cell-cell adhesion sites where it binds vinculin,
paxillin, and afadin. It may function in the control of
cell motility. Other interaction partners of Sorbs1
include c-Abl, Sos, flotillin, Grb4, ataxin-7, filamin
C, among others. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP
motifs. They play versatile and diverse roles in the
cell including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 59
Score = 41.9 bits (98), Expect = 1e-05
Identities = 22/56 (39%), Positives = 31/56 (55%), Gaps = 4/56 (7%)
Query: 41 YRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELR--GQTGWFPESYVEP 94
Y+A+Y + +N DEL + GDI V V + + GW G R Q G FP +YV+
Sbjct: 4 YQALYSYAPQNDDELELRDGDI--VDVMEKCDDGWFVGTSRRTKQFGTFPGNYVKL 57
Score = 33.4 bits (76), Expect = 0.010
Identities = 16/55 (29%), Positives = 30/55 (54%), Gaps = 3/55 (5%)
Query: 224 LAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVKVM 278
L Y + ++L L G ++ + +K GW+ G + + +Q G FP +YVK++
Sbjct: 7 LYSYAPQNDDELELRDGDIVDVMEKCDDGWFVGTSR---RTKQFGTFPGNYVKLL 58
Score = 28.8 bits (64), Expect = 0.46
Identities = 17/54 (31%), Positives = 23/54 (42%), Gaps = 3/54 (5%)
Query: 106 YIAAYPYDSTEPGDLTFNQDEVIYVTKKENDWWTGTIGDRT---GLFPSNYVVP 156
Y A Y Y +L +++ V +K +D W RT G FP NYV
Sbjct: 4 YQALYSYAPQNDDELELRDGDIVDVMEKCDDGWFVGTSRRTKQFGTFPGNYVKL 57
>gnl|CDD|212779 cd11845, SH3_Src_like, Src homology 3 domain of Src kinase-like
Protein Tyrosine Kinases. Src subfamily members include
Src, Lck, Hck, Blk, Lyn, Fgr, Fyn, Yrk, Yes, and Brk.
Src (or c-Src) proteins are cytoplasmic (or
non-receptor) PTKs which are anchored to the plasma
membrane. They contain an N-terminal SH4 domain with a
myristoylation site, followed by SH3 and SH2 domains, a
tyr kinase domain, and a regulatory C-terminal region
containing a conserved tyr. They are activated by
autophosphorylation at the tyr kinase domain, but are
negatively regulated by phosphorylation at the
C-terminal tyr by Csk (C-terminal Src Kinase). However,
Brk lacks the N-terminal myristoylation sites. Src
proteins are involved in signaling pathways that
regulate cytokine and growth factor responses,
cytoskeleton dynamics, cell proliferation, survival, and
differentiation. They were identified as the first
proto-oncogene products, and they regulate cell
adhesion, invasion, and motility in cancer cells, and
tumor vasculature, contributing to cancer progression
and metastasis. Src kinases are overexpressed in a
variety of human cancers, making them attractive targets
for therapy. They are also implicated in acute
inflammatory responses and osteoclast function. Src,
Fyn, Yes, and Yrk are widely expressed, while Blk, Lck,
Hck, Fgr, Lyn, and Brk show a limited expression
pattern. This subfamily also includes Drosophila Src42A,
Src oncogene at 42A (also known as Dsrc41) which
accumulates at sites of cell-cell or cell-matrix
adhesion, and participates in Drosphila development and
wound healing. It has been shown to promote tube
elongation in the tracheal system, is essential for
proper cell-cell matching during dorsal closure, and
regulates cell-cell contacts in developing Drosophila
eyes. The SH3 domain of Src kinases contributes to
substrate recruitment by binding adaptor
proteins/substrates, and regulation of kinase activity
through an intramolecular interaction. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 52
Score = 41.8 bits (99), Expect = 1e-05
Identities = 17/55 (30%), Positives = 27/55 (49%), Gaps = 11/55 (20%)
Query: 106 YIAAYPYDSTEPGDLTFNQDEVIYVTKKEN-DWW------TGTIGDRTGLFPSNY 153
Y+A Y Y++ DL+F + + + + + DWW TG + G PSNY
Sbjct: 2 YVALYDYEARTDDDLSFKKGDRLQILDDSDGDWWLARHLSTG----KEGYIPSNY 52
Score = 40.3 bits (95), Expect = 3e-05
Identities = 18/52 (34%), Positives = 31/52 (59%), Gaps = 2/52 (3%)
Query: 41 YRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELR-GQTGWFPESY 91
Y A+Y++ +R D+LSF+ GD + + + + WLA L G+ G+ P +Y
Sbjct: 2 YVALYDYEARTDDDLSFKKGDRLQI-LDDSDGDWWLARHLSTGKEGYIPSNY 52
Score = 36.0 bits (84), Expect = 0.001
Identities = 14/51 (27%), Positives = 24/51 (47%), Gaps = 3/51 (5%)
Query: 224 LAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASY 274
L Y A + + LS +G + I + WW + GK+ G+ P++Y
Sbjct: 5 LYDYEARTDDDLSFKKGDRLQILDDSDGDWWLARHLSTGKE---GYIPSNY 52
>gnl|CDD|212923 cd11990, SH3_Intersectin2_2, Second Src homology 3 domain (or
SH3B) of Intersectin-2. Intersectin-2 (ITSN2) is an
adaptor protein that functions in exo- and endocytosis,
actin cytoskeletal reorganization, and signal
transduction. It plays a role in clathrin-coated pit
(CCP) formation. It binds to many proteins through its
multidomain structure and facilitate the assembly of
multimeric complexes. ITSN2 also functions as a
specific GEF for Cdc42 activation in epithelial
morphogenesis, and is required in mitotic spindle
orientation. It exists in alternatively spliced short
and long isoforms. The short isoform contains two Eps15
homology domains (EH1 and EH2), a coiled-coil region
and five SH3 domains (SH3A-E), while the long isoform,
in addition, contains RhoGEF (also called
Dbl-homologous or DH), Pleckstrin homology (PH) and C2
domains. The second SH3 domain (or SH3B) of ITSN2 is
expected to bind protein partners, similar to ITSN1
which has been shown to bind WNK and CdGAP. SH3 domains
are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 52
Score = 41.6 bits (97), Expect = 1e-05
Identities = 19/52 (36%), Positives = 30/52 (57%), Gaps = 3/52 (5%)
Query: 42 RAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVE 93
+A+ + ++ + L+F DII V +Q W GE+ G GWFP+SYV+
Sbjct: 3 QALCSWTAKKDNHLNFSKNDIITVLEQQE---NWWFGEVHGGRGWFPKSYVK 51
Score = 36.9 bits (85), Expect = 5e-04
Identities = 19/57 (33%), Positives = 28/57 (49%), Gaps = 6/57 (10%)
Query: 221 ATVLAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVKV 277
A L +TA L+ S+ +I + ++ WW GE+ GWFP SYVK+
Sbjct: 2 AQALCSWTAKKDNHLNFSKNDIITVLEQQEN-WWFGEVHG-----GRGWFPKSYVKL 52
Score = 36.6 bits (84), Expect = 7e-04
Identities = 12/35 (34%), Positives = 23/35 (65%)
Query: 120 LTFNQDEVIYVTKKENDWWTGTIGDRTGLFPSNYV 154
L F+++++I V +++ +WW G + G FP +YV
Sbjct: 16 LNFSKNDIITVLEQQENWWFGEVHGGRGWFPKSYV 50
>gnl|CDD|212721 cd11787, SH3_SH3RF_2, Second Src Homology 3 domain of SH3 domain
containing ring finger proteins. This model represents
the second SH3 domain of SH3RF1 (or POSH), SH3RF2 (or
POSHER), SH3RF3 (POSH2), and similar domains. Members of
this family are scaffold proteins that function as E3
ubiquitin-protein ligases. They all contain an
N-terminal RING finger domain and multiple SH3 domains;
SH3RF1 and SH3RF3 have four SH3 domains while SH3RF2 has
three. SH3RF1 plays a role in calcium homeostasis
through the control of the ubiquitin domain protein
Herp. It may also have a role in regulating death
receptor mediated and JNK mediated apoptosis. SH3RF3
interacts with p21-activated kinase 2 (PAK2) and
GTP-loaded Rac1. It may play a role in regulating JNK
mediated apoptosis in certain conditions. SH3RF2 acts as
an anti-apoptotic regulator of the JNK pathway by
binding to and promoting the degradation of SH3RF1. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 53
Score = 41.6 bits (98), Expect = 1e-05
Identities = 18/52 (34%), Positives = 29/52 (55%), Gaps = 6/52 (11%)
Query: 107 IAAYPYDST---EPGDLTFNQDEVIYVTKK--ENDWWTGTIGDRTGLFPSNY 153
A Y ++ E LTF + +VI V ++ EN W G +GD+ G+FP ++
Sbjct: 3 KALYDFEMKDEDEKDCLTFKKGDVITVIRRVDEN-WAEGRLGDKIGIFPISF 53
Score = 36.9 bits (86), Expect = 5e-04
Identities = 20/55 (36%), Positives = 31/55 (56%), Gaps = 9/55 (16%)
Query: 42 RAIYEFVSRNGDE---LSFQPGDIIMV--PVKQNAEPGWLAGELRGQTGWFPESY 91
+A+Y+F ++ DE L+F+ GD+I V V +N W G L + G FP S+
Sbjct: 3 KALYDFEMKDEDEKDCLTFKKGDVITVIRRVDEN----WAEGRLGDKIGIFPISF 53
>gnl|CDD|212980 cd12047, SH3_Noxa1_C, C-terminal Src Homology 3 domain of NADPH
oxidase activator 1. Noxa1 is a homolog of p67phox and
is a cytosolic subunit of the nonphagocytic NADPH
oxidase complex Nox1, which catalyzes the transfer of
electrons from NADPH to molecular oxygen to form
superoxide. Noxa1 is co-expressed with Nox1 in colon,
stomach, uterus, prostate, and vascular smooth muscle
cells, consistent with its regulatory role. It does not
interact with p40phox, unlike p67phox, making Nox1
activity independent of p40phox, unlike Nox2. Noxa1
contains TPR, PB1, and C-terminal SH3 domains, but lacks
the central SH3 domain that is present in p67phox. The
TPR domain binds activated GTP-bound Rac. The C-terminal
SH3 domain binds the polyproline motif found at the
C-terminus of Noxo1, a homolog of p47phox. SH3 domains
are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 53
Score = 41.7 bits (98), Expect = 1e-05
Identities = 16/51 (31%), Positives = 26/51 (50%), Gaps = 1/51 (1%)
Query: 107 IAAYPYDSTEPGDLTFNQDEVIYVTKKEN-DWWTGTIGDRTGLFPSNYVVP 156
+A + Y + P DL F+Q + I + + N +W G R G+FP + V
Sbjct: 3 VAQHDYSAQGPEDLEFSQGDTIDILSEVNQEWLEGHCDGRIGIFPKCFAVR 53
Score = 38.3 bits (89), Expect = 2e-04
Identities = 16/55 (29%), Positives = 28/55 (50%), Gaps = 2/55 (3%)
Query: 40 RYRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVEP 94
R A +++ ++ ++L F GD I + + N E WL G G+ G FP+ +
Sbjct: 1 RMVAQHDYSAQGPEDLEFSQGDTIDILSEVNQE--WLEGHCDGRIGIFPKCFAVR 53
>gnl|CDD|212977 cd12044, SH3_SKAP1, Src Homology 3 domain of Src
Kinase-Associated Phosphoprotein 1. SKAP1, also called
SKAP55 (Src kinase-associated protein of 55kDa), is an
immune cell-specific adaptor protein that plays an
important role in T-cell adhesion, migration, and
integrin clustering. It is expressed exclusively in
T-lymphocytes, mast cells, and macrophages. Binding
partners include ADAP (adhesion and
degranulation-promoting adaptor protein), Fyn, Riam,
RapL, and RasGRP. It contains a pleckstrin homology
(PH) domain, a C-terminal SH3 domain, and several
tyrosine phosphorylation sites. The SH3 domain of SKAP1
is necessary for its ability to regulate T-cell
conjugation with antigen-presenting cells and the
formation of LFA-1 clusters. SKAP1 binds primarily to a
proline-rich region of ADAP through its SH3 domain; its
degradation is regulated by ADAP. A secondary
interaction occurs via the ADAP SH3 domain and the
RKxxYxxY motif in SKAP1. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles
in the cell including the regulation of enzymes,
changing the subcellular localization of signaling
pathway components, and mediating the formation of
multiprotein complex assemblies.
Length = 53
Score = 41.8 bits (98), Expect = 1e-05
Identities = 21/52 (40%), Positives = 30/52 (57%)
Query: 41 YRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYV 92
Y+ +++ N DELSFQ GD+I + K+ GW GEL G G P+ Y+
Sbjct: 2 YQGLWDCFGDNPDELSFQRGDLIYILSKEYNMYGWWVGELNGIVGIVPKDYL 53
Score = 34.1 bits (78), Expect = 0.007
Identities = 15/53 (28%), Positives = 27/53 (50%), Gaps = 3/53 (5%)
Query: 105 YYIAAYPYDSTEPGDLTFNQDEVIYVTKKEND---WWTGTIGDRTGLFPSNYV 154
YY + P +L+F + ++IY+ KE + WW G + G+ P +Y+
Sbjct: 1 YYQGLWDCFGDNPDELSFQRGDLIYILSKEYNMYGWWVGELNGIVGIVPKDYL 53
Score = 30.2 bits (68), Expect = 0.12
Identities = 18/50 (36%), Positives = 22/50 (44%), Gaps = 7/50 (14%)
Query: 228 TATSSEQLSLSRGQLIMIRKK--TTTGWWEGELQAKGKKRQVGWFPASYV 275
+ ++LS RG LI I K GWW GEL VG P Y+
Sbjct: 9 FGDNPDELSFQRGDLIYILSKEYNMYGWWVGELNG-----IVGIVPKDYL 53
>gnl|CDD|212758 cd11824, SH3_PSTPIP1, Src homology 3 domain of
Proline-Serine-Threonine Phosphatase-Interacting
Protein 1. PSTPIP1, also called CD2 Binding Protein 1
(CD2BP1), is mainly expressed in hematopoietic cells.
It is a binding partner of the cell surface receptor
CD2 and PTP-PEST, a tyrosine phosphatase which
functions in cell motility and Rac1 regulation. It also
plays a role in the activation of the Wiskott-Aldrich
syndrome protein (WASP), which couples actin
rearrangement and T cell activation. Mutations in the
gene encoding PSTPIP1 cause the autoinflammatory
disorder known as PAPA (pyogenic sterile arthritis,
pyoderma gangrenosum, and acne) syndrome. PSTPIP1
contains an N-terminal F-BAR domain, PEST motifs, and a
C-terminal SH3 domain. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles
in the cell including the regulation of enzymes,
changing the subcellular localization of signaling
pathway components, and mediating the formation of
multiprotein complex assemblies.
Length = 53
Score = 41.6 bits (98), Expect = 1e-05
Identities = 20/54 (37%), Positives = 30/54 (55%), Gaps = 2/54 (3%)
Query: 40 RYRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVE 93
+Y +Y++ ++ DELS GD++ V K E GW E GQ G P +Y+E
Sbjct: 1 KYSVLYDYTAQEDDELSISKGDVVAVIEK--GEDGWWTVERNGQKGLVPGTYLE 52
Score = 35.8 bits (83), Expect = 0.001
Identities = 18/56 (32%), Positives = 31/56 (55%), Gaps = 5/56 (8%)
Query: 221 ATVLAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVK 276
+VL YTA ++LS+S+G ++ + +K GWW E + Q G P +Y++
Sbjct: 2 YSVLYDYTAQEDDELSISKGDVVAVIEKGEDGWWTVE-----RNGQKGLVPGTYLE 52
Score = 31.6 bits (72), Expect = 0.049
Identities = 16/50 (32%), Positives = 27/50 (54%), Gaps = 1/50 (2%)
Query: 106 YIAAYPYDSTEPGDLTFNQDEVIYVTKK-ENDWWTGTIGDRTGLFPSNYV 154
Y Y Y + E +L+ ++ +V+ V +K E+ WWT + GL P Y+
Sbjct: 2 YSVLYDYTAQEDDELSISKGDVVAVIEKGEDGWWTVERNGQKGLVPGTYL 51
>gnl|CDD|212954 cd12021, SH3_p47phox_1, First or N-terminal Src homology 3 domain
of the p47phox subunit of NADPH oxidase, also called
Neutrophil Cytosolic Factor 1. p47phox, or NCF1, is a
cytosolic subunit of the phagocytic NADPH oxidase
complex (also called Nox2 or gp91phox), which plays a
key role in the ability of phagocytes to defend against
bacterial infections. NADPH oxidase catalyzes the
transfer of electrons from NADPH to oxygen during
phagocytosis forming superoxide and reactive oxygen
species. p47phox is required for activation of NADH
oxidase and plays a role in translocation. It contains
an N-terminal Phox homology (PX) domain, tandem SH3
domains (N-SH3 and C-SH3), a polybasic/autoinhibitory
region, and a C-terminal proline-rich region (PRR).
This model characterizes the first SH3 domain (or
N-SH3) of p47phox. In its inactive state, the tandem
SH3 domains interact intramolecularly with the
autoinhibitory region; upon activation, the tandem SH3
domains are exposed through a conformational change,
resulting in their binding to the PRR of p22phox and
the activation of NADPH oxidase. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 53
Score = 41.5 bits (97), Expect = 1e-05
Identities = 20/54 (37%), Positives = 33/54 (61%), Gaps = 2/54 (3%)
Query: 41 YRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVEP 94
YRAI ++ + E++ + GD +V V + +E GW +L+ + GW P SY+EP
Sbjct: 2 YRAIADYEKSSKSEMALKTGD--VVEVVEKSENGWWFCQLKAKRGWVPASYLEP 53
Score = 39.2 bits (91), Expect = 8e-05
Identities = 18/54 (33%), Positives = 32/54 (59%), Gaps = 5/54 (9%)
Query: 223 VLAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVK 276
+A Y +S +++L G ++ + +K+ GWW +L+AK GW PASY++
Sbjct: 4 AIADYEKSSKSEMALKTGDVVEVVEKSENGWWFCQLKAKR-----GWVPASYLE 52
Score = 26.5 bits (58), Expect = 3.6
Identities = 15/52 (28%), Positives = 24/52 (46%), Gaps = 1/52 (1%)
Query: 106 YIAAYPYDSTEPGDLTF-NQDEVIYVTKKENDWWTGTIGDRTGLFPSNYVVP 156
Y A Y+ + ++ D V V K EN WW + + G P++Y+ P
Sbjct: 2 YRAIADYEKSSKSEMALKTGDVVEVVEKSENGWWFCQLKAKRGWVPASYLEP 53
>gnl|CDD|212937 cd12004, SH3_Lyn, Src homology 3 domain of Lyn Protein Tyrosine
Kinase. Lyn is a member of the Src subfamily of
proteins, which are cytoplasmic (or non-receptor) PTKs.
Lyn is expressed in B lymphocytes and myeloid cells. It
exhibits both positive and negative regulatory roles in
B cell receptor (BCR) signaling. Lyn, as well as Fyn and
Blk, promotes B cell activation by phosphorylating ITAMs
(immunoreceptor tyr activation motifs) in CD19 and in Ig
components of BCR. It negatively regulates signaling by
its unique ability to phosphorylate ITIMs
(immunoreceptor tyr inhibition motifs) in cell surface
receptors like CD22 and CD5. Lyn also plays an important
role in G-CSF receptor signaling by phosphorylating a
variety of adaptor molecules. Src kinases contain an
N-terminal SH4 domain with a myristoylation site,
followed by SH3 and SH2 domains, a tyr kinase domain,
and a regulatory C-terminal region containing a
conserved tyr. They are activated by autophosphorylation
at the tyr kinase domain, but are negatively regulated
by phosphorylation at the C-terminal tyr by Csk
(C-terminal Src Kinase). The SH3 domain of Src kinases
contributes to substrate recruitment by binding adaptor
proteins/substrates, and regulation of kinase activity
through an intramolecular interaction. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 56
Score = 41.1 bits (96), Expect = 2e-05
Identities = 18/50 (36%), Positives = 26/50 (52%), Gaps = 2/50 (4%)
Query: 107 IAAYPYDSTEPGDLTFNQDEVIYVTKKENDWWTGT--IGDRTGLFPSNYV 154
+A YPYD DL+F + E + V ++ +WW + G PSNYV
Sbjct: 3 VALYPYDGIHEDDLSFKKGEKLKVIEEHGEWWKARSLTTKKEGFIPSNYV 52
>gnl|CDD|212978 cd12045, SH3_SKAP2, Src Homology 3 domain of Src
Kinase-Associated Phosphoprotein 2. SKAP2, also called
SKAP55-Related (SKAP55R) or SKAP55 homolog (SKAP-HOM or
SKAP55-HOM), is an immune cell-specific adaptor protein
that plays an important role in adhesion and migration
of B-cells and macrophages. Binding partners include
ADAP (adhesion and degranulation-promoting adaptor
protein), YopH, SHPS1, and HPK1. SKAP2 has also been
identified as a substrate for lymphoid-specific
tyrosine phosphatase (Lyp), which has been implicated
in a wide variety of autoimmune diseases. It contains a
pleckstrin homology (PH) domain, a C-terminal SH3
domain, and several tyrosine phosphorylation sites.
Like SKAP1, SKAP2 is expected to bind primarily to a
proline-rich region of ADAP through its SH3 domain; its
degradation may be regulated by ADAP. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 53
Score = 41.0 bits (96), Expect = 2e-05
Identities = 18/52 (34%), Positives = 30/52 (57%)
Query: 41 YRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYV 92
Y+ +++ DELSF+ GD I + K+ GW GE++G G P++Y+
Sbjct: 2 YQGLWDCTGDQPDELSFKRGDTIYILSKEYNRFGWWVGEMKGTIGLVPKAYI 53
Score = 33.7 bits (77), Expect = 0.009
Identities = 15/53 (28%), Positives = 26/53 (49%), Gaps = 3/53 (5%)
Query: 105 YYIAAYPYDSTEPGDLTFNQDEVIYVTKKEND---WWTGTIGDRTGLFPSNYV 154
+Y + +P +L+F + + IY+ KE + WW G + GL P Y+
Sbjct: 1 FYQGLWDCTGDQPDELSFKRGDTIYILSKEYNRFGWWVGEMKGTIGLVPKAYI 53
Score = 29.1 bits (65), Expect = 0.38
Identities = 17/50 (34%), Positives = 23/50 (46%), Gaps = 7/50 (14%)
Query: 228 TATSSEQLSLSRGQLIMIRKK--TTTGWWEGELQAKGKKRQVGWFPASYV 275
T ++LS RG I I K GWW GE+ K +G P +Y+
Sbjct: 9 TGDQPDELSFKRGDTIYILSKEYNRFGWWVGEM-----KGTIGLVPKAYI 53
>gnl|CDD|212800 cd11866, SH3_SKAP1-like, Src Homology 3 domain of Src
Kinase-Associated Phosphoprotein 1 and similar
proteins. This subfamily is composed of SKAP1, SKAP2,
and similar proteins. SKAP1 and SKAP2 are immune
cell-specific adaptor proteins that play roles in T-
and B-cell adhesion, respectively, and are thus
important in the migration of T- and B-cells to sites
of inflammation and for movement during T-cell
conjugation with antigen-presenting cells. Both SKAP1
and SKAP2 bind to ADAP (adhesion and
degranulation-promoting adaptor protein), among many
other binding partners. They contain a pleckstrin
homology (PH) domain, a C-terminal SH3 domain, and
several tyrosine phosphorylation sites. The SH3 domain
of SKAP1 is necessary for its ability to regulate
T-cell conjugation with antigen-presenting cells and
the formation of LFA-1 clusters. SKAP1 binds primarily
to a proline-rich region of ADAP through its SH3
domain; its degradation is regulated by ADAP. A
secondary interaction occurs via the ADAP SH3 domain
and the RKxxYxxY motif in SKAP1. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 53
Score = 40.9 bits (96), Expect = 2e-05
Identities = 19/52 (36%), Positives = 29/52 (55%)
Query: 41 YRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYV 92
Y +++ DELSF+ GD+I + K+ GW GEL G+ G P+ Y+
Sbjct: 2 YMGLWDCSGNEPDELSFKRGDLIYIISKEYDSFGWWVGELNGKVGLVPKDYL 53
Score = 34.7 bits (80), Expect = 0.003
Identities = 17/53 (32%), Positives = 30/53 (56%), Gaps = 3/53 (5%)
Query: 105 YYIAAYPYDSTEPGDLTFNQDEVIYVTKKEND---WWTGTIGDRTGLFPSNYV 154
+Y+ + EP +L+F + ++IY+ KE D WW G + + GL P +Y+
Sbjct: 1 WYMGLWDCSGNEPDELSFKRGDLIYIISKEYDSFGWWVGELNGKVGLVPKDYL 53
Score = 30.1 bits (68), Expect = 0.16
Identities = 18/50 (36%), Positives = 25/50 (50%), Gaps = 7/50 (14%)
Query: 228 TATSSEQLSLSRGQLIMI--RKKTTTGWWEGELQAKGKKRQVGWFPASYV 275
+ ++LS RG LI I ++ + GWW GEL K VG P Y+
Sbjct: 9 SGNEPDELSFKRGDLIYIISKEYDSFGWWVGELNGK-----VGLVPKDYL 53
>gnl|CDD|212854 cd11921, SH3_Vinexin_1, First Src Homology 3 domain of Vinexin,
also called Sorbin and SH3 domain containing 3
(Sorbs3). Vinexin is also called Sorbs3, SH3P3, and
SH3-containing adapter molecule 1 (SCAM-1). It is an
adaptor protein containing one sorbin homology (SoHo)
and three SH3 domains. Vinexin was first identified as
a vinculin binding protein; it is co-localized with
vinculin at cell-ECM and cell-cell adhesion sites.
There are several splice variants of vinexin: alpha,
which contains the SoHo and three SH3 domains and
displays tissue-specific expression; and beta, which
contains only the three SH3 domains and is widely
expressed. Vinexin alpha stimulates the accumulation of
F-actin at focal contact sites. Vinexin also promotes
keratinocyte migration and wound healing. The SH3
domains of vinexin have been reported to bind a number
of ligands including vinculin, WAVE2, DLG5, Abl, and
Cbl. SH3 domains are protein interaction domains that
bind to proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 55
Score = 41.1 bits (96), Expect = 2e-05
Identities = 20/55 (36%), Positives = 32/55 (58%), Gaps = 2/55 (3%)
Query: 39 RRYRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVE 93
+ R ++F +++ EL+ Q GDI V + + + WL GE G+ G FP +YVE
Sbjct: 1 KAARLKFDFQAQSPKELTLQKGDI--VYIHKEVDKNWLEGEHHGRVGIFPANYVE 53
Score = 39.9 bits (93), Expect = 6e-05
Identities = 19/52 (36%), Positives = 31/52 (59%), Gaps = 5/52 (9%)
Query: 227 YTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVKVM 278
+ A S ++L+L +G ++ I K+ W EGE + VG FPA+YV+V+
Sbjct: 9 FQAQSPKELTLQKGDIVYIHKEVDKNWLEGEHHGR-----VGIFPANYVEVL 55
Score = 33.7 bits (77), Expect = 0.008
Identities = 14/39 (35%), Positives = 25/39 (64%), Gaps = 1/39 (2%)
Query: 117 PGDLTFNQDEVIYVTKK-ENDWWTGTIGDRTGLFPSNYV 154
P +LT + +++Y+ K+ + +W G R G+FP+NYV
Sbjct: 14 PKELTLQKGDIVYIHKEVDKNWLEGEHHGRVGIFPANYV 52
>gnl|CDD|212862 cd11929, SH3_SH3RF2_1, First Src Homology 3 domain of SH3 domain
containing ring finger 2. SH3RF2 is also called POSHER
(POSH-eliminating RING protein) or HEPP1 (heart protein
phosphatase 1-binding protein). It acts as an
anti-apoptotic regulator of the JNK pathway by binding
to and promoting the degradation of SH3RF1 (or POSH), a
scaffold protein that is required for pro-apoptotic JNK
activation. It may also play a role in cardiac
functions together with protein phosphatase 1. SH3RF2
contains an N-terminal RING finger domain and three SH3
domains. This model represents the first SH3 domain,
located at the N-terminal half, of SH3RF2. SH3 domains
are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 54
Score = 41.1 bits (96), Expect = 2e-05
Identities = 18/54 (33%), Positives = 30/54 (55%), Gaps = 2/54 (3%)
Query: 40 RYRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVE 93
R +A+ + N +L F GD+I+ +++ + W GE+ G +G FP S VE
Sbjct: 2 RAKALCNYRGHNPGDLKFNKGDVIL--LRRQLDENWYLGEINGVSGIFPASSVE 53
Score = 39.5 bits (92), Expect = 6e-05
Identities = 17/48 (35%), Positives = 29/48 (60%), Gaps = 1/48 (2%)
Query: 108 AAYPYDSTEPGDLTFNQDEVIYVTKK-ENDWWTGTIGDRTGLFPSNYV 154
A Y PGDL FN+ +VI + ++ + +W+ G I +G+FP++ V
Sbjct: 5 ALCNYRGHNPGDLKFNKGDVILLRRQLDENWYLGEINGVSGIFPASSV 52
Score = 31.8 bits (72), Expect = 0.037
Identities = 17/57 (29%), Positives = 28/57 (49%), Gaps = 5/57 (8%)
Query: 221 ATVLAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVKV 277
A L Y + L ++G +I++R++ W+ GE+ G FPAS V+V
Sbjct: 3 AKALCNYRGHNPGDLKFNKGDVILLRRQLDENWYLGEIN-----GVSGIFPASSVEV 54
>gnl|CDD|212866 cd11933, SH3_Nebulin_C, C-terminal Src Homology 3 domain of
Nebulin. Nebulin is a giant filamentous protein
(600-900 kD) that is expressed abundantly in skeletal
muscle. It binds to actin thin filaments and regulates
its assembly and function. Nebulin was thought to be
part of a molecular ruler complex that is critical in
determining the lengths of actin thin filaments in
skeletal muscle since its length, which varies due to
alternative splicing, correlates with the length of
thin filaments in various muscle types. Recent studies
indicate that nebulin regulates thin filament length by
stabilizing the filaments and preventing
depolymerization. Mutations in nebulin can cause
nemaline myopathy, characterized by muscle weakness
which can be severe and can lead to neonatal lethality.
Nebulin contains an N-terminal LIM domain, many nebulin
repeats/super repeats, and a C-terminal SH3 domain. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 58
Score = 41.1 bits (96), Expect = 2e-05
Identities = 21/57 (36%), Positives = 37/57 (64%), Gaps = 4/57 (7%)
Query: 39 RRYRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELR--GQTGWFPESYVE 93
+ +RA+Y++ + + DE+SF+ GD I+ Q + GW+ G ++ G+TG P +YVE
Sbjct: 2 KSFRAMYDYRAADDDEVSFKDGDTIV--NVQTIDEGWMYGTVQRTGKTGMLPANYVE 56
Score = 28.8 bits (64), Expect = 0.49
Identities = 16/52 (30%), Positives = 25/52 (48%), Gaps = 3/52 (5%)
Query: 227 YTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVKVM 278
Y A +++S G I+ + GW G +Q GK G PA+YV+ +
Sbjct: 10 YRAADDDEVSFKDGDTIVNVQTIDEGWMYGTVQRTGK---TGMLPANYVEAI 58
Score = 28.0 bits (62), Expect = 0.88
Identities = 15/50 (30%), Positives = 27/50 (54%), Gaps = 3/50 (6%)
Query: 108 AAYPYDSTEPGDLTFNQ-DEVIYVTKKENDWWTGTI--GDRTGLFPSNYV 154
A Y Y + + +++F D ++ V + W GT+ +TG+ P+NYV
Sbjct: 6 AMYDYRAADDDEVSFKDGDTIVNVQTIDEGWMYGTVQRTGKTGMLPANYV 55
>gnl|CDD|212783 cd11849, SH3_SPIN90, Src homology 3 domain of SH3 protein
interacting with Nck, 90 kDa (SPIN90). SPIN90 is also
called NCK interacting protein with SH3 domain
(NCKIPSD), Dia-interacting protein (DIP), 54 kDa
vimentin-interacting protein (VIP54), or
WASP-interacting SH3-domain protein (WISH). It is an
F-actin binding protein that regulates actin
polymerization and endocytosis. It associates with the
Arp2/3 complex near actin filaments and determines
filament localization at the leading edge of
lamellipodia. SPIN90 is expressed in the early stages of
neuronal differentiation and plays a role in regulating
growth cone dynamics and neurite outgrowth. It also
interacts with IRSp53 and regulates cell motility by
playing a role in the formation of membrane protrusions.
SPIN90 contains an N-terminal SH3 domain, a proline-rich
domain, and a C-terminal VCA (verprolin-homology and
cofilin-like acidic) domain. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 53
Score = 40.8 bits (96), Expect = 2e-05
Identities = 19/51 (37%), Positives = 27/51 (52%), Gaps = 2/51 (3%)
Query: 106 YIAAYPYDSTEPGDLTFNQDEVIYVTKKEN-DWWTGT-IGDRTGLFPSNYV 154
Y A Y + S EP L+F++ E + ++ N WW T TG P+NYV
Sbjct: 2 YRALYDFKSAEPNTLSFSEGETFLLLERSNAHWWLVTNHSGETGYVPANYV 52
Score = 35.4 bits (82), Expect = 0.002
Identities = 20/53 (37%), Positives = 31/53 (58%), Gaps = 1/53 (1%)
Query: 41 YRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVE 93
YRA+Y+F S + LSF G+ ++ + NA WL G+TG+ P +YV+
Sbjct: 2 YRALYDFKSAEPNTLSFSEGETFLLLERSNAH-WWLVTNHSGETGYVPANYVK 53
Score = 29.6 bits (67), Expect = 0.26
Identities = 13/53 (24%), Positives = 24/53 (45%), Gaps = 4/53 (7%)
Query: 224 LAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVK 276
L + + LS S G+ ++ +++ WW + G+ PA+YVK
Sbjct: 5 LYDFKSAEPNTLSFSEGETFLLLERSNAHWW----LVTNHSGETGYVPANYVK 53
>gnl|CDD|212743 cd11809, SH3_srGAP, Src homology 3 domain of Slit-Robo GTPase
Activating Proteins. Slit-Robo GTPase Activating
Proteins (srGAPs) are Rho GAPs that interact with Robo1,
the transmembrane receptor of Slit proteins. Slit
proteins are secreted proteins that control axon
guidance and the migration of neurons and leukocytes.
Vertebrates contain three isoforms of srGAPs (srGAP1-3),
all of which are expressed during embryonic and early
development in the nervous system but with different
localization and timing. A fourth member has also been
reported (srGAP4, also called ARHGAP4). srGAPs contain
an N-terminal F-BAR domain, a Rho GAP domain, and a
C-terminal SH3 domain. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 53
Score = 40.8 bits (96), Expect = 2e-05
Identities = 13/51 (25%), Positives = 23/51 (45%), Gaps = 1/51 (1%)
Query: 107 IAAYPYDSTEPGDLTFNQ-DEVIYVTKKENDWWTGTIGDRTGLFPSNYVVP 156
A + Y +L+F + D + + +DWW G + + GL P Y+
Sbjct: 3 TAQFDYTGRSERELSFKKGDSLTLYRQVSDDWWRGQLNGQDGLVPHKYITL 53
Score = 40.1 bits (94), Expect = 4e-05
Identities = 16/52 (30%), Positives = 26/52 (50%), Gaps = 2/52 (3%)
Query: 43 AIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVEP 94
A +++ R+ ELSF+ GD + + + W G+L GQ G P Y+
Sbjct: 4 AQFDYTGRSERELSFKKGDSLT--LYRQVSDDWWRGQLNGQDGLVPHKYITL 53
Score = 33.9 bits (78), Expect = 0.006
Identities = 16/55 (29%), Positives = 25/55 (45%), Gaps = 5/55 (9%)
Query: 221 ATVLAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYV 275
AT YT S +LS +G + + ++ + WW G+L Q G P Y+
Sbjct: 2 ATAQFDYTGRSERELSFKKGDSLTLYRQVSDDWWRGQL-----NGQDGLVPHKYI 51
>gnl|CDD|212946 cd12013, SH3_RIM-BP_3, Third Src homology 3 domain of
Rab3-interacting molecules (RIMs) binding proteins.
RIMs binding proteins (RBPs, RIM-BPs) associate with
calcium channels present in photoreceptors, neurons,
and hair cells; they interact simultaneously with
specific calcium channel subunits, and active zone
proteins, RIM1 and RIM2. RIMs are part of the matrix at
the presynaptic active zone and are associated with
synaptic vesicles through their interaction with the
small GTPase Rab3. RIM-BPs play a role in regulating
synaptic transmission by serving as adaptors and
linking calcium channels with the synaptic vesicle
release machinery. RIM-BPs contain three SH3 domains
and two to three fibronectin III repeats. Invertebrates
contain one, while vertebrates contain at least two
RIM-BPs, RIM-BP1 and RIM-BP2. RIM-BP1 is also called
peripheral-type benzodiazapine receptor associated
protein 1 (PRAX-1). Mammals contain a third protein,
RIM-BP3. RIM-BP1 and RIM-BP2 are predominantly
expressed in the brain where they display overlapping
but distinct expression patterns, while RIM-BP3 is
almost exclusively expressed in the testis and is
essential in spermiogenesis. The SH3 domains of RIM-BPs
bind to the PxxP motifs of RIM1, RIM2, and L-type
(alpha1D) and N-type (alpha1B) calcium channel
subunits. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate
affinity and selectivity. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 61
Score = 40.8 bits (96), Expect = 3e-05
Identities = 24/62 (38%), Positives = 35/62 (56%), Gaps = 8/62 (12%)
Query: 40 RYRAIYEF----VSRNGD---ELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYV 92
R A++++ S N D ELSF+ GDII V + + E G+ GEL GQ G P +++
Sbjct: 1 RMVALFDYDPRESSPNVDAEVELSFRAGDIITVFGEMD-EDGFYYGELNGQRGLVPSNFL 59
Query: 93 EP 94
E
Sbjct: 60 EE 61
Score = 35.0 bits (81), Expect = 0.003
Identities = 16/58 (27%), Positives = 29/58 (50%), Gaps = 9/58 (15%)
Query: 106 YIAAYPYDSTE--PG-----DLTFNQDEVIYV--TKKENDWWTGTIGDRTGLFPSNYV 154
+A + YD E P +L+F ++I V E+ ++ G + + GL PSN++
Sbjct: 2 MVALFDYDPRESSPNVDAEVELSFRAGDIITVFGEMDEDGFYYGELNGQRGLVPSNFL 59
>gnl|CDD|212702 cd11768, SH3_Tec_like, Src Homology 3 domain of Tec-like Protein
Tyrosine Kinases. The Tec (Tyrosine kinase expressed in
hepatocellular carcinoma) subfamily is composed of Tec,
Btk, Bmx (Etk), Itk (Tsk, Emt), Rlk (Txk), and similar
proteins. They are cytoplasmic (or nonreceptor) tyr
kinases containing Src homology protein interaction
domains (SH3, SH2) N-terminal to the catalytic tyr
kinase domain. Most Tec subfamily members (except Rlk)
also contain an N-terminal pleckstrin homology (PH)
domain, which binds the products of PI3K and allows
membrane recruitment and activation. In addition, some
members contain the Tec homology (TH) domain, which
contains proline-rich and zinc-binding regions. Tec
kinases are expressed mainly by haematopoietic cells,
although Tec and Bmx are also found in endothelial
cells. B-cells express Btk and Tec, while T-cells
express Itk, Txk, and Tec. Collectively, Tec kinases are
expressed in a variety of myeloid cells such as mast
cells, platelets, macrophages, and dendritic cells. Each
Tec kinase shows a distinct cell-type pattern of
expression. The function of Tec kinases in lymphoid
cells have been studied extensively. They play important
roles in the development, differentiation, maturation,
regulation, survival, and function of B-cells and
T-cells. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate affinity
and selectivity, preferentially to PxxP motifs. They
play versatile and diverse roles in the cell including
the regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 54
Score = 40.7 bits (96), Expect = 3e-05
Identities = 17/52 (32%), Positives = 21/52 (40%), Gaps = 2/52 (3%)
Query: 107 IAAYPYDSTEPGDLTFNQDEVIYV-TKKENDWWTGTIGD-RTGLFPSNYVVP 156
+A Y + EPGDL + E V WW + G PSNYV
Sbjct: 3 VALYDFQPIEPGDLPLEKGEEYVVLDDSNEHWWRARDKNGNEGYIPSNYVTE 54
Score = 34.2 bits (79), Expect = 0.005
Identities = 12/53 (22%), Positives = 23/53 (43%), Gaps = 4/53 (7%)
Query: 224 LAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVK 276
L + L L +G+ ++ + WW +A+ K G+ P++YV
Sbjct: 5 LYDFQPIEPGDLPLEKGEEYVVLDDSNEHWW----RARDKNGNEGYIPSNYVT 53
Score = 27.2 bits (61), Expect = 1.5
Identities = 14/52 (26%), Positives = 25/52 (48%), Gaps = 1/52 (1%)
Query: 43 AIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVEP 94
A+Y+F +L + G+ +V + + E W A + G G+ P +YV
Sbjct: 4 ALYDFQPIEPGDLPLEKGEEYVV-LDDSNEHWWRARDKNGNEGYIPSNYVTE 54
>gnl|CDD|212879 cd11946, SH3_GRB2_N, N-terminal Src homology 3 domain of Growth
factor receptor-bound protein 2. GRB2 is a critical
signaling molecule that regulates the Ras pathway by
linking tyrosine kinases to the Ras guanine nucleotide
releasing protein Sos (son of sevenless), which
converts Ras to the active GTP-bound state. It is
ubiquitously expressed in all tissues throughout
development and is important in cell cycle progression,
motility, morphogenesis, and angiogenesis. In
lymphocytes, GRB2 is associated with antigen receptor
signaling components. GRB2 contains an N-terminal SH3
domain, a central SH2 domain, and a C-terminal SH3
domain. Its N-terminal SH3 domain binds to Sos and
Sos-derived proline-rich peptides. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 56
Score = 40.8 bits (95), Expect = 3e-05
Identities = 20/51 (39%), Positives = 32/51 (62%), Gaps = 1/51 (1%)
Query: 43 AIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVE 93
A Y+F + DELSF+ GDI+ V + + + W EL G+ G+ P++Y+E
Sbjct: 5 AKYDFKATADDELSFKRGDILKV-LNEECDQNWYKAELNGKDGFIPKNYIE 54
Score = 32.3 bits (73), Expect = 0.023
Identities = 14/50 (28%), Positives = 27/50 (54%), Gaps = 2/50 (4%)
Query: 107 IAAYPYDSTEPGDLTFNQDEVIYVTKKEND--WWTGTIGDRTGLFPSNYV 154
IA Y + +T +L+F + +++ V +E D W+ + + G P NY+
Sbjct: 4 IAKYDFKATADDELSFKRGDILKVLNEECDQNWYKAELNGKDGFIPKNYI 53
Score = 28.1 bits (62), Expect = 1.0
Identities = 13/52 (25%), Positives = 30/52 (57%), Gaps = 6/52 (11%)
Query: 227 YTATSSEQLSLSRGQLI-MIRKKTTTGWWEGELQAKGKKRQVGWFPASYVKV 277
+ AT+ ++LS RG ++ ++ ++ W++ EL K G+ P +Y+++
Sbjct: 9 FKATADDELSFKRGDILKVLNEECDQNWYKAELNGKD-----GFIPKNYIEM 55
>gnl|CDD|212988 cd12055, SH3_CIN85_2, Second Src Homology 3 domain (SH3B) of
Cbl-interacting protein of 85 kDa. CIN85, also called
SH3 domain-containing kinase-binding protein 1
(SH3KBP1) or CD2-binding protein 3 (CD2BP3) or Ruk, is
an adaptor protein that is involved in the
downregulation of receptor tyrosine kinases by
facilitating endocytosis through interaction with
endophilin-associated ubiquitin ligase Cbl proteins. It
is also important in many other cellular processes
including vesicle-mediated transport, cytoskeletal
remodelling, apoptosis, cell adhesion and migration,
and viral infection, among others. CIN85 exists as
multiple variants from alternative splicing; the main
variant contains three SH3 domains, a proline-rich
region, and a C-terminal coiled-coil domain. All of
these domains enable CIN85 to bind various protein
partners and assemble complexes that have been
implicated in many different functions. This alignment
model represents the second SH3 domain (SH3B) of CIN85.
SH3B has been shown to bind Cbl proline-rich peptides
and ubiquitin. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP
motifs. They play versatile and diverse roles in the
cell including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 53
Score = 40.8 bits (95), Expect = 3e-05
Identities = 20/54 (37%), Positives = 31/54 (57%), Gaps = 2/54 (3%)
Query: 40 RYRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVE 93
R + + ++ +N DEL + GDII V E GW G L G+TG FP ++++
Sbjct: 1 RCQVAFSYLPQNEDELELKVGDII--EVVGEVEEGWWEGVLNGKTGMFPSNFIK 52
Score = 34.6 bits (79), Expect = 0.004
Identities = 15/48 (31%), Positives = 25/48 (52%), Gaps = 1/48 (2%)
Query: 108 AAYPYDSTEPGDLTFNQDEVIYVTKK-ENDWWTGTIGDRTGLFPSNYV 154
A+ Y +L ++I V + E WW G + +TG+FPSN++
Sbjct: 4 VAFSYLPQNEDELELKVGDIIEVVGEVEEGWWEGVLNGKTGMFPSNFI 51
Score = 33.8 bits (77), Expect = 0.006
Identities = 16/50 (32%), Positives = 26/50 (52%), Gaps = 5/50 (10%)
Query: 227 YTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVK 276
Y + ++L L G +I + + GWWEG L K G FP++++K
Sbjct: 8 YLPQNEDELELKVGDIIEVVGEVEEGWWEGVLNGK-----TGMFPSNFIK 52
>gnl|CDD|212717 cd11783, SH3_SH3RF_3, Third Src Homology 3 domain of SH3 domain
containing ring finger 1 (SH3RF1), SH3RF3, and similar
domains. SH3RF1 (or POSH) and SH3RF3 (or POSH2) are
scaffold proteins that function as E3 ubiquitin-protein
ligases. They contain an N-terminal RING finger domain
and four SH3 domains. This model represents the third
SH3 domain, located in the middle of SH3RF1 and SH3RF3,
and similar domains. SH3RF1 plays a role in calcium
homeostasis through the control of the ubiquitin domain
protein Herp. It may also have a role in regulating
death receptor mediated and JNK mediated apoptosis.
SH3RF3 interacts with p21-activated kinase 2 (PAK2) and
GTP-loaded Rac1. It may play a role in regulating JNK
mediated apoptosis in certain conditions. SH3 domains
are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 55
Score = 40.8 bits (96), Expect = 3e-05
Identities = 22/54 (40%), Positives = 32/54 (59%), Gaps = 3/54 (5%)
Query: 106 YIAAYPYDSTEPGDLTFNQDEVIYVTKKEND-WWTGT--IGDRTGLFPSNYVVP 156
Y+A YPY +P +L + E+ VT+K D W+ GT ++G+FP NYV P
Sbjct: 2 YVALYPYKPQKPDELELRKGEMYTVTEKCQDGWFKGTSLRTGQSGVFPGNYVQP 55
Score = 35.4 bits (82), Expect = 0.002
Identities = 20/57 (35%), Positives = 29/57 (50%), Gaps = 4/57 (7%)
Query: 40 RYRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGE--LRGQTGWFPESYVEP 94
Y A+Y + + DEL + G++ V K GW G GQ+G FP +YV+P
Sbjct: 1 IYVALYPYKPQKPDELELRKGEMYTVTEKCQ--DGWFKGTSLRTGQSGVFPGNYVQP 55
Score = 31.2 bits (71), Expect = 0.056
Identities = 17/58 (29%), Positives = 29/58 (50%), Gaps = 3/58 (5%)
Query: 220 IATVLAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVKV 277
I L PY ++L L +G++ + +K GW++G + Q G FP +YV+
Sbjct: 1 IYVALYPYKPQKPDELELRKGEMYTVTEKCQDGWFKG---TSLRTGQSGVFPGNYVQP 55
>gnl|CDD|212932 cd11999, SH3_PACSIN_like, Src homology 3 domain of an unknown
subfamily of proteins with similarity to Protein kinase
C and Casein kinase Substrate in Neurons (PACSIN)
proteins. PACSINs, also called Synaptic
dynamin-associated proteins (Syndapins), act as
regulators of cytoskeletal and membrane dynamics. They
bind both dynamin and Wiskott-Aldrich syndrome protein
(WASP), and may provide direct links between the actin
cytoskeletal machinery through WASP and
dynamin-dependent endocytosis. Vetebrates harbor three
isoforms with distinct expression patterns and specific
functions. PACSINs contain an N-terminal F-BAR domain
and a C-terminal SH3 domain. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles
in the cell including the regulation of enzymes,
changing the subcellular localization of signaling
pathway components, and mediating the formation of
multiprotein complex assemblies.
Length = 56
Score = 40.7 bits (95), Expect = 3e-05
Identities = 21/55 (38%), Positives = 32/55 (58%), Gaps = 2/55 (3%)
Query: 40 RYRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAG-ELRGQTGWFPESYVE 93
R RA+Y++ + DELSF+ G+ ++ V+ E GW G G G +P +YVE
Sbjct: 3 RVRAVYDYTGQEPDELSFKAGEELL-KVEDEDEQGWCKGVTDGGAVGLYPANYVE 56
Score = 31.4 bits (71), Expect = 0.048
Identities = 18/50 (36%), Positives = 26/50 (52%), Gaps = 3/50 (6%)
Query: 108 AAYPYDSTEPGDLTFNQDEVIYVTKKEND--W-WTGTIGDRTGLFPSNYV 154
A Y Y EP +L+F E + + E++ W T G GL+P+NYV
Sbjct: 6 AVYDYTGQEPDELSFKAGEELLKVEDEDEQGWCKGVTDGGAVGLYPANYV 55
>gnl|CDD|212942 cd12009, SH3_Blk, Src homology 3 domain of Blk Protein Tyrosine
Kinase. Blk is a member of the Src subfamily of
proteins, which are cytoplasmic (or non-receptor) PTKs.
It is expressed specifically in B-cells and is involved
in pre-BCR (B-cell receptor) signaling. Src kinases
contain an N-terminal SH4 domain with a myristoylation
site, followed by SH3 and SH2 domains, a tyr kinase
domain, and a regulatory C-terminal region containing a
conserved tyr. They are activated by autophosphorylation
at the tyr kinase domain, but are negatively regulated
by phosphorylation at the C-terminal tyr by Csk
(C-terminal Src Kinase). The SH3 domain of Src kinases
contributes to substrate recruitment by binding adaptor
proteins/substrates, and regulation of kinase activity
through an intramolecular interaction. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 54
Score = 40.2 bits (94), Expect = 4e-05
Identities = 16/54 (29%), Positives = 23/54 (42%), Gaps = 2/54 (3%)
Query: 105 YYIAAYPYDSTEPGDLTFNQDEVIYVTKKENDWWTGT--IGDRTGLFPSNYVVP 156
IA Y + + DL + E + V K + +WW + G PSNYV
Sbjct: 1 CVIAQYDFVPSNERDLQLKKGEKLQVLKSDGEWWLAKSLTTGKEGYIPSNYVAR 54
Score = 29.4 bits (66), Expect = 0.26
Identities = 19/55 (34%), Positives = 29/55 (52%), Gaps = 3/55 (5%)
Query: 41 YRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGEL-RGQTGWFPESYVEP 94
A Y+FV N +L + G+ + V +K + E WLA L G+ G+ P +YV
Sbjct: 2 VIAQYDFVPSNERDLQLKKGEKLQV-LKSDGE-WWLAKSLTTGKEGYIPSNYVAR 54
>gnl|CDD|212999 cd12066, SH3_GRAF3, Src Homology 3 domain of GTPase Regulator
Associated with Focal adhesion kinase 3. GRAF3 is also
called Rho GTPase activating protein 42 (ARHGAP42) or
ARHGAP10-like. Though its function has not been
characterized, it may be a GAP with activity towards
RhoA and Cdc42, based on its similarity to GRAF and
GRAF2. It contains an N-terminal BAR domain, followed
by a Pleckstrin homology (PH) domain, a Rho GAP domain,
and a C-terminal SH3 domain. The SH3 domain of GRAF and
GRAF2 binds PKNbeta, a target of the small GTPase Rho.
SH3 domains bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP
motifs; they play a role in the regulation of enzymes
by intramolecular interactions, changing the
subcellular localization of signal pathway components
and mediate multiprotein complex assemblies.
Length = 55
Score = 40.0 bits (93), Expect = 5e-05
Identities = 21/52 (40%), Positives = 28/52 (53%), Gaps = 1/52 (1%)
Query: 42 RAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVE 93
+A+Y + + ELSF P I V + EPGWL G+TG PE+YV
Sbjct: 3 KAMYSCKAEHSHELSF-PQGAIFSNVYPSVEPGWLKATYEGKTGLVPENYVV 53
Score = 26.2 bits (57), Expect = 4.9
Identities = 11/22 (50%), Positives = 12/22 (54%)
Query: 134 ENDWWTGTIGDRTGLFPSNYVV 155
E W T +TGL P NYVV
Sbjct: 32 EPGWLKATYEGKTGLVPENYVV 53
>gnl|CDD|212991 cd12058, SH3_MLK4, Src Homology 3 domain of Mixed Lineage Kinase
4. MLK4 is a Serine/Threonine Kinase (STK), catalyzing
the transfer of the gamma-phosphoryl group from ATP to
S/T residues on protein substrates. MLKs act as
mitogen-activated protein kinase kinase kinases
(MAP3Ks, MKKKs, MAPKKKs), which phosphorylate and
activate MAPK kinases (MAPKKs or MKKs or MAP2Ks), which
in turn phosphorylate and activate MAPKs during
signaling cascades that are important in mediating
cellular responses to extracellular signals. MLKs play
roles in immunity and inflammation, as well as in cell
death, proliferation, and cell cycle regulation. The
specific function of MLK4 is yet to be determined.
Mutations in the kinase domain of MLK4 have been
detected in colorectal cancers. MLK4 contains an SH3
domain, a catalytic kinase domain, a leucine zipper, a
proline-rich region, and a CRIB domain that mediates
binding to GTP-bound Cdc42 and Rac. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 58
Score = 39.9 bits (93), Expect = 5e-05
Identities = 20/57 (35%), Positives = 34/57 (59%), Gaps = 3/57 (5%)
Query: 41 YRAIYEFVSRNGDELSFQPGDIIMVPVKQNA---EPGWLAGELRGQTGWFPESYVEP 94
+ A+Y++ + DELS + GD++ V + A + GW AG++R + G FP +YV
Sbjct: 2 WTALYDYEASGEDELSLRRGDVVEVLSQDAAVSGDDGWWAGKIRHRLGIFPANYVTR 58
Score = 39.9 bits (93), Expect = 5e-05
Identities = 19/59 (32%), Positives = 32/59 (54%), Gaps = 10/59 (16%)
Query: 222 TVLAPYTATSSEQLSLSRGQLIMIRKKTTT-----GWWEGELQAKGKKRQVGWFPASYV 275
T L Y A+ ++LSL RG ++ + + GWW G+++ ++G FPA+YV
Sbjct: 3 TALYDYEASGEDELSLRRGDVVEVLSQDAAVSGDDGWWAGKIR-----HRLGIFPANYV 56
Score = 38.4 bits (89), Expect = 2e-04
Identities = 17/57 (29%), Positives = 31/57 (54%), Gaps = 6/57 (10%)
Query: 106 YIAAYPYDSTEPGDLTFNQDEVIYVTKKE------NDWWTGTIGDRTGLFPSNYVVP 156
+ A Y Y+++ +L+ + +V+ V ++ + WW G I R G+FP+NYV
Sbjct: 2 WTALYDYEASGEDELSLRRGDVVEVLSQDAAVSGDDGWWAGKIRHRLGIFPANYVTR 58
>gnl|CDD|212701 cd11767, SH3_Nck_3, Third Src Homology 3 domain of Nck adaptor
proteins. This group contains the third SH3 domain of
Nck, the first SH3 domain of Caenorhabditis elegans
Ced-2 (Cell death abnormality protein 2), and similar
domains. Nck adaptor proteins regulate actin
cytoskeleton dynamics by linking proline-rich effector
molecules to protein tyrosine kinases and
phosphorylated signaling intermediates. They contain
three SH3 domains and a C-terminal SH2 domain. They
function downstream of the PDGFbeta receptor and are
involved in Rho GTPase signaling and actin dynamics.
Vertebrates contain two Nck adaptor proteins: Nck1
(also called Nckalpha) and Nck2 (also called Nckbeta or
Growth factor receptor-bound protein 4, Grb4), which
show partly overlapping functions but also bind
distinct targets. Their SH3 domains are involved in
recruiting downstream effector molecules, such as the
N-WASP/Arp2/3 complex, which when activated induces
actin polymerization that results in the production of
pedestals, or protrusions of the plasma membrane. The
third SH3 domain of Nck appears to prefer ligands with
a PxAPxR motif. SH3 domains are protein interaction
domains that usually bind to proline-rich ligands with
moderate affinity and selectivity, preferentially a
PxxP motif. Ced-2 is a cell corpse engulfment protein
that interacts with Ced-5 in a pathway that regulates
the activation of Ced-10, a Rac small GTPase.
Length = 56
Score = 40.0 bits (94), Expect = 5e-05
Identities = 20/53 (37%), Positives = 28/53 (52%), Gaps = 1/53 (1%)
Query: 42 RAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGW-LAGELRGQTGWFPESYVE 93
A+Y F N +ELSF+ G+ + + K +P W A G TG P +YVE
Sbjct: 3 VALYPFTGENDEELSFEKGERLEIIEKPEDDPDWWKARNALGTTGLVPRNYVE 55
Score = 37.3 bits (87), Expect = 5e-04
Identities = 19/56 (33%), Positives = 28/56 (50%), Gaps = 12/56 (21%)
Query: 107 IAAYPYDSTEPGDLTFNQDEVIYVTKK---ENDWW-----TGTIGDRTGLFPSNYV 154
+A YP+ +L+F + E + + +K + DWW GT TGL P NYV
Sbjct: 3 VALYPFTGENDEELSFEKGERLEIIEKPEDDPDWWKARNALGT----TGLVPRNYV 54
Score = 31.1 bits (71), Expect = 0.077
Identities = 17/60 (28%), Positives = 29/60 (48%), Gaps = 6/60 (10%)
Query: 220 IATVLAPYTATSSEQLSLSRGQLIMIRKKTTT--GWWEGELQAKGKKRQVGWFPASYVKV 277
+ L P+T + E+LS +G+ + I +K WW +A+ G P +YV+V
Sbjct: 1 VVVALYPFTGENDEELSFEKGERLEIIEKPEDDPDWW----KARNALGTTGLVPRNYVEV 56
>gnl|CDD|212899 cd11966, SH3_ASAP2, Src homology 3 domain of ArfGAP with SH3
domain, ankyrin repeat and PH domain containing protein
2. ASAP2 is also called DDEF2 (Development and
Differentiation Enhancing Factor 2), AMAP2, centaurin
beta-3, or PAG3. It mediates the functions of Arf
GTPases vial dual mechanisms: it exhibits GTPase
activating protein (GAP) activity towards class I
(Arf1) and II (Arf5) Arfs; and it binds class III Arfs
(GTP-Arf6) stably without GAP activity. It binds
paxillin and is implicated in Fcgamma receptor-mediated
phagocytosis in macrophages and in cell migration.
ASAP2 contains an N-terminal BAR domain, followed by a
Pleckstrin homology (PH) domain, an Arf GAP domain,
ankyrin (ANK) repeats, and a C-terminal SH3 domain. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 56
Score = 39.9 bits (93), Expect = 5e-05
Identities = 22/56 (39%), Positives = 34/56 (60%), Gaps = 5/56 (8%)
Query: 40 RYRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQ---TGWFPESYV 92
R +A+Y V+ N DEL+F G+II+V +++ E W G + G+ G FP S+V
Sbjct: 1 RVKALYNCVADNPDELTFSEGEIIIVDGEEDKE--WWIGHIDGEPTRRGAFPVSFV 54
Score = 34.2 bits (78), Expect = 0.005
Identities = 20/51 (39%), Positives = 31/51 (60%), Gaps = 4/51 (7%)
Query: 108 AAYPYDSTEPGDLTFNQDEVIYVTKKEN-DWWTGTI-GD--RTGLFPSNYV 154
A Y + P +LTF++ E+I V +E+ +WW G I G+ R G FP ++V
Sbjct: 4 ALYNCVADNPDELTFSEGEIIIVDGEEDKEWWIGHIDGEPTRRGAFPVSFV 54
Score = 29.9 bits (67), Expect = 0.17
Identities = 14/48 (29%), Positives = 27/48 (56%), Gaps = 2/48 (4%)
Query: 228 TATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYV 275
A + ++L+ S G++I++ + WW G + + +R G FP S+V
Sbjct: 9 VADNPDELTFSEGEIIIVDGEEDKEWWIGHIDGEPTRR--GAFPVSFV 54
>gnl|CDD|212827 cd11894, SH3_FCHSD2_2, Second Src Homology 3 domain of FCH and
double SH3 domains protein 2. FCHSD2 has a domain
structure consisting of an N-terminal F-BAR (FES-CIP4
Homology and Bin/Amphiphysin/Rvs), two SH3, and
C-terminal proline-rich domains. It has only been
characterized in silico and its function is unknown.
SH3 domains are protein interaction domains that bind
to proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 56
Score = 39.9 bits (93), Expect = 6e-05
Identities = 21/53 (39%), Positives = 31/53 (58%), Gaps = 1/53 (1%)
Query: 42 RAIYEFVSRNGDELSFQPGDIIMVPVKQN-AEPGWLAGELRGQTGWFPESYVE 93
+A+Y++ + DELSF G II + K+N + G+ GE G+ G FP VE
Sbjct: 3 KALYDYEGQTDDELSFPEGAIIRILNKENQDDDGFWEGEFNGRIGVFPSVLVE 55
Score = 33.4 bits (76), Expect = 0.012
Identities = 16/51 (31%), Positives = 25/51 (49%), Gaps = 4/51 (7%)
Query: 105 YYIAAYPYDSTEPGDLTFNQDEVIYVTKKEND----WWTGTIGDRTGLFPS 151
+ A Y Y+ +L+F + +I + KEN +W G R G+FPS
Sbjct: 1 FVKALYDYEGQTDDELSFPEGAIIRILNKENQDDDGFWEGEFNGRIGVFPS 51
Score = 31.8 bits (72), Expect = 0.039
Identities = 17/56 (30%), Positives = 26/56 (46%), Gaps = 8/56 (14%)
Query: 224 LAPYTATSSEQLSLSRGQLIMIRKKTTT---GWWEGELQAKGKKRQVGWFPASYVK 276
L Y + ++LS G +I I K G+WEGE + +G FP+ V+
Sbjct: 5 LYDYEGQTDDELSFPEGAIIRILNKENQDDDGFWEGEFNGR-----IGVFPSVLVE 55
>gnl|CDD|212778 cd11844, SH3_CAS, Src homology 3 domain of CAS (Crk-Associated
Substrate) scaffolding proteins. CAS proteins function
as molecular scaffolds to regulate protein complexes
that are involved in many cellular processes including
migration, chemotaxis, apoptosis, differentiation, and
progenitor cell function. They mediate the signaling of
integrins at focal adhesions where they localize, and
thus, regulate cell invasion and survival.
Over-expression of these proteins is implicated in poor
prognosis, increased metastasis, and resistance to
chemotherapeutics in many cancers such as breast, lung,
melanoma, and glioblastoma. CAS proteins have also been
linked to the pathogenesis of inflammatory disorders,
Alzheimer's, Parkinson's, and developmental defects.
They share a common domain structure that includes an
N-terminal SH3 domain, an unstructured substrate domain
that contains many YxxP motifs, a serine-rich
four-helix bundle, and a FAT-like C-terminal domain.
Vertebrates contain four CAS proteins: BCAR1 (or
p130Cas), NEDD9 (or HEF1), EFS (or SIN), and CASS4 (or
HEPL). The SH3 domain of CAS proteins binds to diverse
partners including FAK, FRNK, Pyk2, PTP-PEST, DOCK180,
among others. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP
motifs. They play versatile and diverse roles in the
cell including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 56
Score = 39.6 bits (93), Expect = 6e-05
Identities = 21/49 (42%), Positives = 31/49 (63%), Gaps = 3/49 (6%)
Query: 42 RAIYEFVSRNGDELSFQPGDIIMVPVKQNAE--PGWLAGELRGQTGWFP 88
RA+Y+ V+ + DEL+F+ GDI+ V ++QN GW LRG+ G P
Sbjct: 3 RALYDNVAESPDELAFRRGDILTV-LEQNTAGLEGWWLCSLRGRQGIAP 50
Score = 27.3 bits (61), Expect = 1.4
Identities = 12/47 (25%), Positives = 23/47 (48%), Gaps = 6/47 (12%)
Query: 112 YDSTE--PGDLTFNQDEVIYVTKKE----NDWWTGTIGDRTGLFPSN 152
YD+ P +L F + +++ V ++ WW ++ R G+ P N
Sbjct: 6 YDNVAESPDELAFRRGDILTVLEQNTAGLEGWWLCSLRGRQGIAPGN 52
>gnl|CDD|212871 cd11938, SH3_ARHGEF16_26, Src homology 3 domain of the Rho
guanine nucleotide exchange factors ARHGEF16 and
ARHGEF26. ARHGEF16, also called ephexin-4, acts as a
GEF for RhoG, activating it by exchanging bound GDP for
free GTP. RhoG is a small GTPase that is a crucial
regulator of Rac in migrating cells. ARHGEF16 interacts
directly with the ephrin receptor EphA2 and mediates
cell migration and invasion in breast cancer cells by
activating RhoG. ARHGEF26, also called SGEF (SH3
domain-containing guanine exchange factor), also
activates RhoG. It is highly expressed in liver and may
play a role in regulating membrane dynamics. ARHGEF16
and ARHGEF26 contain RhoGEF (also called Dbl-homologous
or DH), Pleckstrin Homology (PH), and SH3 domains. The
SH3 domains of ARHGEFs play an autoinhibitory role
through intramolecular interactions with a proline-rich
region N-terminal to the DH domain. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 55
Score = 39.4 bits (92), Expect = 7e-05
Identities = 21/54 (38%), Positives = 29/54 (53%), Gaps = 4/54 (7%)
Query: 43 AIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGE-LR-GQTGWFPESYVEP 94
I + ++ DELS Q D+++V Q GW GE LR G+ GWFP S +
Sbjct: 4 IIKAYTAKQPDELSLQQADVVLV--LQTESDGWYYGERLRDGERGWFPSSCAKE 55
Score = 36.4 bits (84), Expect = 9e-04
Identities = 17/50 (34%), Positives = 30/50 (60%), Gaps = 3/50 (6%)
Query: 227 YTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVK 276
YTA ++LSL + ++++ + + GW+ GE G++ GWFP+S K
Sbjct: 8 YTAKQPDELSLQQADVVLVLQTESDGWYYGERLRDGER---GWFPSSCAK 54
>gnl|CDD|212819 cd11886, SH3_BOI, Src Homology 3 domain of fungal BOI-like
proteins. This subfamily includes the Saccharomyces
cerevisiae proteins BOI1 and BOI2, and similar
proteins. They contain an N-terminal SH3 domain, a
Sterile alpha motif (SAM), and a Pleckstrin homology
(PH) domain at the C-terminus. BOI1 and BOI2 interact
with the SH3 domain of Bem1p, a protein involved in bud
formation. They promote polarized cell growth and
participates in the NoCut signaling pathway, which is
involved in the control of cytokinesis. SH3 domains
bind to proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs; they play a
role in the regulation of enzymes by intramolecular
interactions, changing the subcellular localization of
signal pathway components and mediate multiprotein
complex assemblies.
Length = 55
Score = 39.2 bits (92), Expect = 8e-05
Identities = 19/55 (34%), Positives = 31/55 (56%), Gaps = 5/55 (9%)
Query: 41 YRAIYEFVSRNGDELSFQPGDIIMVPVKQNAE--PGWLAGE--LRGQTGWFPESY 91
I++F +R+ DEL+ +PGD I + ++ + E GW G G+TG FP +
Sbjct: 2 LIVIHDFNARSEDELTLKPGDKIEL-IEDDEEFGDGWYLGRNLRTGETGLFPVVF 55
>gnl|CDD|212735 cd11801, SH3_JIP1_like, Src homology 3 domain of JNK-interacting
proteins 1 and 2, and similar domains. JNK-interacting
proteins (JIPs) function as scaffolding proteins for
c-Jun N-terminal kinase (JNK) signaling pathways. They
bind to components of Mitogen-activated protein kinase
(MAPK) pathways such as JNK, MKK, and several MAP3Ks
such as MLK and DLK. There are four JIPs (JIP1-4); all
contain a JNK binding domain. JIP1 and JIP2 also
contain SH3 and Phosphotyrosine-binding (PTB) domains.
Both are highly expressed in the brain and pancreatic
beta-cells. JIP1 functions as an adaptor linking motor
to cargo during axonal transport and also is involved
in regulating insulin secretion. JIP2 form complexes
with fibroblast growth factor homologous factors
(FHFs), which facilitates activation of the p38delta
MAPK. The SH3 domain of JIP1 homodimerizes at the
interface usually involved in proline-rich ligand
recognition, despite the lack of this motif in the
domain itself. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP
motifs. They play versatile and diverse roles in the
cell including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 55
Score = 39.2 bits (92), Expect = 8e-05
Identities = 22/54 (40%), Positives = 33/54 (61%), Gaps = 4/54 (7%)
Query: 41 YRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAG-ELR-GQTGWFPESYV 92
+RA+++F+ R+ DE+ GD + V+Q A+ W G LR GQ G FP +YV
Sbjct: 2 HRALHKFIPRHEDEIELDIGDPVY--VEQEADDLWCEGTNLRTGQRGIFPAAYV 53
>gnl|CDD|212856 cd11923, SH3_Sorbs2_2, Second Src Homology 3 domain of Sorbin and
SH3 domain containing 2 (Sorbs2), also called
Arg-binding protein 2 (ArgBP2). Sorbs2 or ArgBP2 is an
adaptor protein containing one sorbin homology (SoHo)
and three SH3 domains. It regulates actin-dependent
processes including cell adhesion, morphology, and
migration. It is expressed in many tissues and is
abundant in the heart. Like vinexin, it is found in
focal adhesion where it interacts with vinculin and
afadin. It also localizes in epithelial cell stress
fibers and in cardiac muscle cell Z-discs. Sorbs2 has
been implicated to play roles in the signaling of c-Arg,
Akt, and Pyk2. Other interaction partners of Sorbs2
include c-Abl, flotillin, spectrin, dynamin 1/2,
synaptojanin, PTP-PEST, among others. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 57
Score = 39.1 bits (91), Expect = 9e-05
Identities = 19/52 (36%), Positives = 33/52 (63%), Gaps = 3/52 (5%)
Query: 227 YTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVKVM 278
+ A ++ +LSL +G +++ K+ W+EG++ G RQ G FP SYV+V+
Sbjct: 9 FNADTNVELSLRKGDRVVLLKQVDQNWYEGKI--PGTNRQ-GIFPVSYVEVI 57
>gnl|CDD|212692 cd11758, SH3_CRK_N, N-terminal Src Homology 3 domain of Ct10
Regulator of Kinase adaptor proteins. CRK adaptor
proteins consists of SH2 and SH3 domains, which bind
tyrosine-phosphorylated peptides and proline-rich
motifs, respectively. They function downstream of
protein tyrosine kinases in many signaling pathways
started by various extracellular signals, including
growth and differentiation factors. Cellular CRK
(c-CRK) contains a single SH2 domain, followed by
N-terminal and C-terminal SH3 domains. It is involved
in the regulation of many cellular processes including
cell growth, motility, adhesion, and apoptosis. CRK has
been implicated in the malignancy of various human
cancers. The N-terminal SH3 domain of CRK binds a
number of target proteins including DOCK180, C3G, SOS,
and cABL. The CRK family includes two alternatively
spliced protein forms, CRKI and CRKII, that are
expressed by the CRK gene, and the CRK-like (CRKL)
protein, which is expressed by a distinct gene (CRKL).
SH3 domains are protein interaction domains that bind
to proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 55
Score = 38.9 bits (91), Expect = 1e-04
Identities = 18/52 (34%), Positives = 31/52 (59%), Gaps = 1/52 (1%)
Query: 42 RAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVE 93
RA+++F + ++L F+ G+I+ V +++ E W A G+TG P YVE
Sbjct: 4 RALFDFPGNDDEDLPFKKGEILTV-IRKPEEQWWNARNSEGKTGMIPVPYVE 54
Score = 37.7 bits (88), Expect = 3e-04
Identities = 16/53 (30%), Positives = 27/53 (50%), Gaps = 2/53 (3%)
Query: 104 EYYIAAYPYDSTEPGDLTFNQDEVIYVTKKEND-WWTGTIGD-RTGLFPSNYV 154
EY A + + + DL F + E++ V +K + WW + +TG+ P YV
Sbjct: 1 EYVRALFDFPGNDDEDLPFKKGEILTVIRKPEEQWWNARNSEGKTGMIPVPYV 53
Score = 27.7 bits (62), Expect = 0.99
Identities = 11/49 (22%), Positives = 21/49 (42%), Gaps = 4/49 (8%)
Query: 227 YTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYV 275
+ E L +G+++ + +K WW A+ + + G P YV
Sbjct: 9 FPGNDDEDLPFKKGEILTVIRKPEEQWW----NARNSEGKTGMIPVPYV 53
>gnl|CDD|212805 cd11872, SH3_DOCK_AB, Src Homology 3 domain of Class A and B
Dedicator of Cytokinesis proteins. DOCK proteins are
atypical guanine nucleotide exchange factors (GEFs) that
lack the conventional Dbl homology (DH) domain. They are
divided into four classes (A-D) based on sequence
similarity and domain architecture: class A includes
Dock1, 2 and 5; class B includes Dock3 and 4; class C
includes Dock6, 7, and 8; and class D includes Dock9, 10
and 11. All DOCKs contain two homology domains: the
DHR-1 (Dock homology region-1), also called CZH1 (CED-5,
Dock180, and MBC-zizimin homology 1), and DHR-2 (also
called CZH2 or Docker). The DHR-1 domain binds
phosphatidylinositol-3,4,5-triphosphate while DHR-2
contains the catalytic activity for Rac and/or Cdc42.
This subfamily includes only Class A and B DOCKs, which
also contain an SH3 domain at the N-terminal region and
a PxxP motif at the C-terminus. Class A/B DOCKs are
mostly specific GEFs for Rac, except Dock4 which
activates the Ras family GTPase Rap1, probably
indirectly through interaction with Rap regulatory
proteins. The SH3 domain of class A/B DOCKs have been
shown to bind Elmo, a scaffold protein that promotes GEF
activity of DOCKs by releasing DHR-2 autoinhibition by
the intramolecular SH3 domain. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 56
Score = 38.7 bits (91), Expect = 1e-04
Identities = 16/59 (27%), Positives = 23/59 (38%), Gaps = 3/59 (5%)
Query: 220 IATVLAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVKVM 278
+ + QLSL G + I ++ GW+ G K G FP SYV +
Sbjct: 1 YGVAIYNFQGDGEHQLSLQVGDTVQILEECE-GWYRGFSL--RNKSLKGIFPKSYVHIK 56
Score = 29.9 bits (68), Expect = 0.20
Identities = 11/54 (20%), Positives = 27/54 (50%), Gaps = 3/54 (5%)
Query: 105 YYIAAYPYDSTEPGDLTFNQDEVIYVTKKENDWWTG-TIGDRT--GLFPSNYVV 155
Y +A Y + L+ + + + ++ W+ G ++ +++ G+FP +YV
Sbjct: 1 YGVAIYNFQGDGEHQLSLQVGDTVQILEECEGWYRGFSLRNKSLKGIFPKSYVH 54
>gnl|CDD|212741 cd11807, SH3_ASPP, Src homology 3 domain of Apoptosis Stimulating
of p53 proteins (ASPP). The ASPP family of proteins
bind to important regulators of apoptosis (p53, Bcl-2,
and RelA) and cell growth (APCL, PP1). They share
similarity at their C-termini, where they harbor a
proline-rich region, four ankyrin (ANK) repeats, and an
SH3 domain. Vertebrates contain three members of the
family: ASPP1, ASPP2, and iASPP. ASPP1 and ASPP2
activate the apoptotic function of the p53 family of
tumor suppressors (p53, p63, and p73), while iASPP is an
oncoprotein that specifically inhibits p53-induced
apoptosis. The expression of ASPP proteins is altered in
tumors; ASPP1 and ASPP2 are downregulated whereas iASPP
is upregulated is some cancer types. ASPP proteins also
bind and regulate protein phosphatase 1 (PP1), and this
binding is competitive with p53 binding. The SH3 domain
and the ANK repeats of ASPP contribute to the p53
binding site; they bind to the DNA binding domain of
p53. SH3 domains are protein interaction domains that
bind to proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 57
Score = 38.9 bits (91), Expect = 1e-04
Identities = 13/50 (26%), Positives = 25/50 (50%), Gaps = 4/50 (8%)
Query: 108 AAYPYDSTEPGDLTFNQDEVIYVTKK----ENDWWTGTIGDRTGLFPSNY 153
A + Y++ +L+F + + + V +K E +WW + D+ G P N
Sbjct: 5 ALFDYEAENGDELSFREGDELTVLRKGDDDETEWWWARLNDKEGYVPRNL 54
Score = 32.7 bits (75), Expect = 0.019
Identities = 17/50 (34%), Positives = 28/50 (56%), Gaps = 1/50 (2%)
Query: 43 AIYEFVSRNGDELSFQPGDIIMVPVKQ-NAEPGWLAGELRGQTGWFPESY 91
A++++ + NGDELSF+ GD + V K + E W L + G+ P +
Sbjct: 5 ALFDYEAENGDELSFREGDELTVLRKGDDDETEWWWARLNDKEGYVPRNL 54
>gnl|CDD|212781 cd11847, SH3_Brk, Src homology 3 domain of Brk (Breast tumor
kinase) Protein Tyrosine Kinase (PTK), also called PTK6.
Brk is a cytoplasmic (or non-receptor) PTK with limited
homology to Src kinases. It has been found to be
overexpressed in a majority of breast tumors. It plays
roles in normal cell differentiation, proliferation,
survival, migration, and cell cycle progression. Brk
substrates include RNA-binding proteins (SLM-1/2,
Sam68), transcription factors (STAT3/5), and signaling
molecules (Akt, paxillin, IRS-4). Src kinases in general
contain an N-terminal SH4 domain with a myristoylation
site, followed by SH3 and SH2 domains, a tyr kinase
domain, and a regulatory C-terminal region containing a
conserved tyr; they are activated by autophosphorylation
at the tyr kinase domain, but are negatively regulated
by phosphorylation at the C-terminal tyr by Csk
(C-terminal Src Kinase). However, Brk lacks the
N-terminal myristoylation site. The SH3 domain of Src
kinases contributes to substrate recruitment by binding
adaptor proteins/substrates, and regulation of kinase
activity through an intramolecular interaction. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 58
Score = 38.7 bits (90), Expect = 1e-04
Identities = 14/55 (25%), Positives = 25/55 (45%), Gaps = 6/55 (10%)
Query: 106 YIAAYPYDSTEPGDLTFNQDEVIYVTKKENDWWTGTIGDR------TGLFPSNYV 154
Y A + + + +L+F + + ++ DWWT DR G P+NY+
Sbjct: 2 YKALWDFKARGDEELSFQAGDQFRIAERSGDWWTALKLDRAGGVVAQGFVPNNYL 56
Score = 32.5 bits (74), Expect = 0.026
Identities = 17/57 (29%), Positives = 29/57 (50%), Gaps = 7/57 (12%)
Query: 41 YRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGEL-----RGQTGWFPESYV 92
Y+A+++F +R +ELSFQ GD + + W A +L G+ P +Y+
Sbjct: 2 YKALWDFKARGDEELSFQAGDQFRIAERS--GDWWTALKLDRAGGVVAQGFVPNNYL 56
Score = 25.2 bits (55), Expect = 9.4
Identities = 14/56 (25%), Positives = 23/56 (41%)
Query: 220 IATVLAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYV 275
I L + A E+LS G I +++ W +L G G+ P +Y+
Sbjct: 1 IYKALWDFKARGDEELSFQAGDQFRIAERSGDWWTALKLDRAGGVVAQGFVPNNYL 56
>gnl|CDD|212870 cd11937, SH3_UBASH3A, Src homology 3 domain of
Ubiquitin-associated and SH3 domain-containing protein
A. UBASH3A is also called Cbl-Interacting Protein 4
(CLIP4), T cell Ubiquitin LigAnd (TULA), or T cell
receptor Signaling (STS)-2. It is only found in
lymphoid cells and exhibits weak phosphatase activity.
UBASH3A facilitates T cell-induced apoptosis through
interaction with the apoptosis-inducing factor AIF. It
is involved in regulating the level of phosphorylation
of the zeta-associated protein (ZAP)-70 tyrosine
kinase. TULA proteins contain an N-terminal UBA domain,
a central SH3 domain, and a C-terminal histidine
phosphatase domain. They bind c-Cbl through the SH3
domain and to ubiquitin via UBA. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 60
Score = 38.8 bits (90), Expect = 1e-04
Identities = 23/56 (41%), Positives = 33/56 (58%), Gaps = 4/56 (7%)
Query: 42 RAIYEFVSRNGDELSFQPGDIIMV-PVKQN-AEPGWLAG--ELRGQTGWFPESYVE 93
RA++++ +N DEL PGD I V P +Q+ A GW+ G G G+ PE+Y E
Sbjct: 4 RALFQYKPQNIDELMLSPGDYIFVDPTQQSEASEGWVIGISHRTGCRGFLPENYTE 59
>gnl|CDD|212851 cd11918, SH3_Vinexin_3, Third (or C-terminal) Src Homology 3
domain of Vinexin, also called Sorbin and SH3 domain
containing 3 (Sorbs3). Vinexin is also called Sorbs3,
SH3P3, and SH3-containing adapter molecule 1 (SCAM-1).
It is an adaptor protein containing one sorbin homology
(SoHo) and three SH3 domains. Vinexin was first
identified as a vinculin binding protein; it is
co-localized with vinculin at cell-ECM and cell-cell
adhesion sites. There are several splice variants of
vinexin: alpha, which contains the SoHo and three SH3
domains and displays tissue-specific expression; and
beta, which contains only the three SH3 domains and is
widely expressed. Vinexin alpha stimulates the
accumulation of F-actin at focal contact sites. Vinexin
also promotes keratinocyte migration and wound healing.
The SH3 domains of vinexin have been reported to bind a
number of ligands including vinculin, WAVE2, DLG5, Abl,
and Cbl. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP
motifs. They play versatile and diverse roles in the
cell including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 58
Score = 38.8 bits (90), Expect = 1e-04
Identities = 22/56 (39%), Positives = 31/56 (55%), Gaps = 4/56 (7%)
Query: 41 YRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELR--GQTGWFPESYVEP 94
Y+A+Y++ +N DEL + GD V V Q + GW G R + G FP +YV P
Sbjct: 4 YKAVYQYRPQNEDELELREGDR--VDVMQQCDDGWFVGVSRRTQKFGTFPGNYVAP 57
Score = 31.5 bits (71), Expect = 0.050
Identities = 17/54 (31%), Positives = 25/54 (46%), Gaps = 3/54 (5%)
Query: 106 YIAAYPYDSTEPGDLTFNQDEVIYVTKKENDWWTGTIGDRT---GLFPSNYVVP 156
Y A Y Y +L + + + V ++ +D W + RT G FP NYV P
Sbjct: 4 YKAVYQYRPQNEDELELREGDRVDVMQQCDDGWFVGVSRRTQKFGTFPGNYVAP 57
>gnl|CDD|212890 cd11957, SH3_RUSC2, Src homology 3 domain of RUN and SH3
domain-containing protein 2. RUSC2, also called Iporin
or Interacting protein of Rab1, is expressed
ubiquitously with highest amounts in the brain and
testis. It interacts with the small GTPase Rab1 and the
Golgi matrix protein GM130, and may function in linking
GTPases to certain intracellular signaling pathways.
RUSC proteins are adaptor proteins consisting of RUN,
leucine zipper, and SH3 domains. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 52
Score = 38.4 bits (89), Expect = 2e-04
Identities = 16/42 (38%), Positives = 28/42 (66%), Gaps = 1/42 (2%)
Query: 114 STEPGDLTFNQDEVIYV-TKKENDWWTGTIGDRTGLFPSNYV 154
+TEPG L+FN+ +++ V ++ + DW ++G +GL P YV
Sbjct: 10 ATEPGQLSFNKGDILQVLSRADGDWLRCSLGPDSGLVPIAYV 51
>gnl|CDD|212846 cd11913, SH3_BAIAP2L1, Src Homology 3 domain of Brain-specific
Angiogenesis Inhibitor 1-Associated Protein 2-Like 1,
also called Insulin Receptor Tyrosine Kinase Substrate
(IRTKS). BAIAP2L1 or IRTKS is widely expressed, serves
as a substrate for the insulin receptor, and binds the
small GTPase Rac. It plays a role in regulating the
actin cytoskeleton and colocalizes with F-actin,
cortactin, VASP, and vinculin. BAIAP2L1 expression
leads to the formation of short actin bundles, distinct
from filopodia-like protrusions induced by the
expression of the related protein IRSp53. IRTKS
mediates the recruitment of effector proteins Tir and
EspFu, which regulate host cell actin reorganization,
to bacterial attachment sites. It contains an
N-terminal IMD or Inverse-Bin/Amphiphysin/Rvs (I-BAR)
domain, an SH3 domain, and a WASP homology 2 (WH2)
actin-binding motif at the C-terminus. The SH3 domain
of IRTKS has been shown to bind the proline-rich
C-terminus of EspFu. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles
in the cell including the regulation of enzymes,
changing the subcellular localization of signaling
pathway components, and mediating the formation of
multiprotein complex assemblies.
Length = 58
Score = 38.7 bits (90), Expect = 2e-04
Identities = 19/46 (41%), Positives = 24/46 (52%), Gaps = 3/46 (6%)
Query: 51 NGDELSFQPGDIIMVPVKQNAEPGWLAGELR--GQTGWFPESYVEP 94
N LSF GD+I + + + + GWL GE GWFP SY P
Sbjct: 14 NKTLLSFAQGDVITLLIPEEKD-GWLYGEHDTTKARGWFPSSYTRP 58
Score = 34.1 bits (78), Expect = 0.007
Identities = 16/53 (30%), Positives = 29/53 (54%), Gaps = 5/53 (9%)
Query: 226 PYTATSSE-QLSLSRGQ-LIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVK 276
P+TA +++ LS ++G + ++ + GW GE + GWFP+SY +
Sbjct: 8 PHTAGNNKTLLSFAQGDVITLLIPEEKDGWLYGEHDTTKAR---GWFPSSYTR 57
>gnl|CDD|212865 cd11932, SH3_SH3RF2_2, Second Src Homology 3 domain of SH3 domain
containing ring finger 2. SH3RF2 is also called POSHER
(POSH-eliminating RING protein) or HEPP1 (heart protein
phosphatase 1-binding protein). It acts as an
anti-apoptotic regulator of the JNK pathway by binding
to and promoting the degradation of SH3RF1 (or POSH), a
scaffold protein that is required for pro-apoptotic JNK
activation. It may also play a role in cardiac functions
together with protein phosphatase 1. SH3RF2 contains an
N-terminal RING finger domain and three SH3 domains.
This model represents the second SH3 domain, located
C-terminal of the first SH3 domain at the N-terminal
half, of SH3RF2. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP motifs.
They play versatile and diverse roles in the cell
including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 57
Score = 38.7 bits (90), Expect = 2e-04
Identities = 13/36 (36%), Positives = 23/36 (63%), Gaps = 1/36 (2%)
Query: 120 LTFNQDEVIYVTKK-ENDWWTGTIGDRTGLFPSNYV 154
L F +D++I V + + +W G +GD+ G+FP +V
Sbjct: 22 LKFQKDDIITVISRVDENWAEGKLGDQVGIFPILFV 57
Score = 35.6 bits (82), Expect = 0.002
Identities = 22/59 (37%), Positives = 27/59 (45%), Gaps = 12/59 (20%)
Query: 42 RAIYEF------VSRNGDELSFQPGDIIMV--PVKQNAEPGWLAGELRGQTGWFPESYV 92
RA+Y F + D L FQ DII V V +N W G+L Q G FP +V
Sbjct: 3 RALYNFDLKEKNREESKDCLKFQKDDIITVISRVDEN----WAEGKLGDQVGIFPILFV 57
>gnl|CDD|212985 cd12052, SH3_CIN85_1, First Src Homology 3 domain (SH3A) of
Cbl-interacting protein of 85 kDa. CIN85, also called
SH3 domain-containing kinase-binding protein 1 (SH3KBP1)
or CD2-binding protein 3 (CD2BP3) or Ruk, is an adaptor
protein that is involved in the downregulation of
receptor tyrosine kinases by facilitating endocytosis
through interaction with endophilin-associated ubiquitin
ligase Cbl proteins. It is also important in many other
cellular processes including vesicle-mediated transport,
cytoskeletal remodelling, apoptosis, cell adhesion and
migration, and viral infection, among others. CIN85
exists as multiple variants from alternative splicing;
the main variant contains three SH3 domains, a
proline-rich region, and a C-terminal coiled-coil
domain. All of these domains enable CIN85 to bind
various protein partners and assemble complexes that
have been implicated in many different functions. This
alignment model represents the first SH3 domain (SH3A)
of CIN85; SH3A binds to internal proline-rich motifs
within the proline-rich region. This intramolecular
interaction serves as a regulatory mechanism to keep
CIN85 in a closed conformation, preventing the
recruitment of other proteins. SH3A has also been shown
to bind ubiquitin and to an atypical PXXXPR motif at the
C-terminus of Cbl and the cytoplasmic end of the cell
adhesion protein CD2. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 53
Score = 38.3 bits (89), Expect = 2e-04
Identities = 21/56 (37%), Positives = 33/56 (58%), Gaps = 5/56 (8%)
Query: 221 ATVLAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVK 276
A V Y A ++L+++ G +I KK GWWEGE+ KG++ G FP ++V+
Sbjct: 2 AIVEFDYKAQHEDELTITVGDIITKIKKDDGGWWEGEI--KGRR---GLFPDNFVR 52
Score = 38.3 bits (89), Expect = 2e-04
Identities = 17/49 (34%), Positives = 25/49 (51%), Gaps = 1/49 (2%)
Query: 107 IAAYPYDSTEPGDLTFNQDEVIY-VTKKENDWWTGTIGDRTGLFPSNYV 154
I + Y + +LT ++I + K + WW G I R GLFP N+V
Sbjct: 3 IVEFDYKAQHEDELTITVGDIITKIKKDDGGWWEGEIKGRRGLFPDNFV 51
Score = 38.0 bits (88), Expect = 3e-04
Identities = 17/48 (35%), Positives = 31/48 (64%), Gaps = 2/48 (4%)
Query: 45 YEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYV 92
+++ +++ DEL+ GDII K + GW GE++G+ G FP+++V
Sbjct: 6 FDYKAQHEDELTITVGDIITKIKKDDG--GWWEGEIKGRRGLFPDNFV 51
>gnl|CDD|212718 cd11784, SH3_SH3RF2_3, Third Src Homology 3 domain of SH3 domain
containing ring finger 2. SH3RF2 is also called POSHER
(POSH-eliminating RING protein) or HEPP1 (heart protein
phosphatase 1-binding protein). It acts as an
anti-apoptotic regulator of the JNK pathway by binding
to and promoting the degradation of SH3RF1 (or POSH), a
scaffold protein that is required for pro-apoptotic JNK
activation. It may also play a role in cardiac functions
together with protein phosphatase 1. SH3RF2 contains an
N-terminal RING finger domain and three SH3 domains.
This model represents the third SH3 domain, located in
the middle, of SH3RF2. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 55
Score = 38.2 bits (89), Expect = 2e-04
Identities = 17/54 (31%), Positives = 26/54 (48%), Gaps = 3/54 (5%)
Query: 106 YIAAYPYDSTEPGDLTFNQDEVIYVTKKENDWW---TGTIGDRTGLFPSNYVVP 156
+A + Y + P +L + E + V K + W + R G+FPSNYV P
Sbjct: 2 CVALHSYSAHRPEELELQKGEGVRVLGKFQEGWLRGLSLVTGRVGIFPSNYVSP 55
Score = 36.3 bits (84), Expect = 9e-04
Identities = 18/53 (33%), Positives = 27/53 (50%), Gaps = 3/53 (5%)
Query: 223 VLAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYV 275
L Y+A E+L L +G+ + + K GW G G+ VG FP++YV
Sbjct: 4 ALHSYSAHRPEELELQKGEGVRVLGKFQEGWLRGLSLVTGR---VGIFPSNYV 53
Score = 35.1 bits (81), Expect = 0.002
Identities = 18/57 (31%), Positives = 28/57 (49%), Gaps = 4/57 (7%)
Query: 40 RYRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGE--LRGQTGWFPESYVEP 94
A++ + + +EL Q G+ V V + GWL G + G+ G FP +YV P
Sbjct: 1 MCVALHSYSAHRPEELELQKGE--GVRVLGKFQEGWLRGLSLVTGRVGIFPSNYVSP 55
>gnl|CDD|212722 cd11788, SH3_RasGAP, Src Homology 3 domain of Ras
GTPase-Activating Protein 1. RasGAP, also called Ras
p21 protein activator, RASA1, or p120RasGAP, is part of
the GAP1 family of GTPase-activating proteins. It is a
120kD cytosolic protein containing an SH3 domain
flanked by two SH2 domains at the N-terminal end, a
pleckstrin homology (PH) domain, a calcium dependent
phospholipid binding domain (CaLB/C2), and a C-terminal
catalytic GAP domain. It stimulates the GTPase activity
of normal RAS p21. It acts as a positive effector of
Ras in tumor cells. It also functions as a regulator
downstream of tyrosine receptors such as those of PDGF,
EGF, ephrin, and insulin, among others. The SH3 domain
of RasGAP is unable to bind proline-rich sequences but
have been shown to interact with protein partners such
as the G3BP protein, Aurora kinases, and the Calpain
small subunit 1. The RasGAP SH3 domain is necessary for
the downstream signaling of Ras and it also influences
Rho-mediated cytoskeletal reorganization. SH3 domains
are protein interaction domains that typically bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 59
Score = 38.5 bits (90), Expect = 2e-04
Identities = 23/59 (38%), Positives = 27/59 (45%), Gaps = 5/59 (8%)
Query: 39 RRYRAIYEFVSRNG-DELSFQPGDIIMVPVKQNAEPGWLAGELR--GQTGWFPESYVEP 94
RR RAI + DELSFQ GDI + V E GWL G++G VE
Sbjct: 2 RRVRAILPYNKVPDTDELSFQKGDIFV--VHNELEDGWLWVTSLRTGESGLVFRDLVEE 58
>gnl|CDD|212893 cd11960, SH3_Abp1_eu, Src homology 3 domain of eumetazoan
Actin-binding protein 1. Abp1, also called drebrin-like
protein, is an adaptor protein that functions in
receptor-mediated endocytosis and vesicle trafficking.
It contains an N-terminal actin-binding module, the
actin-depolymerizing factor (ADF) homology domain, a
helical domain, and a C-terminal SH3 domain. Mammalian
Abp1, unlike yeast Abp1, does not contain an acidic
domain that interacts with the Arp2/3 complex. It
regulates actin dynamics indirectly by interacting with
dynamin and WASP family proteins. Abp1 deficiency causes
abnormal organ structure and function of the spleen,
heart, and lung of mice. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 54
Score = 38.1 bits (89), Expect = 2e-04
Identities = 17/49 (34%), Positives = 29/49 (59%), Gaps = 2/49 (4%)
Query: 108 AAYPYDSTEPGDLTFNQDEVI-YVTKKENDWWTGTIGD-RTGLFPSNYV 154
A Y Y + + +++F+ ++I + + + WW GT D GLFP+NYV
Sbjct: 4 ALYDYQAADDTEISFDPGDIITDIEQIDEGWWRGTGPDGTYGLFPANYV 52
Score = 36.2 bits (84), Expect = 9e-04
Identities = 22/54 (40%), Positives = 31/54 (57%), Gaps = 1/54 (1%)
Query: 40 RYRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVE 93
R RA+Y++ + + E+SF PGDII ++Q E W G G FP +YVE
Sbjct: 1 RARALYDYQAADDTEISFDPGDII-TDIEQIDEGWWRGTGPDGTYGLFPANYVE 53
Score = 28.9 bits (65), Expect = 0.41
Identities = 18/56 (32%), Positives = 25/56 (44%), Gaps = 4/56 (7%)
Query: 221 ATVLAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVK 276
A L Y A ++S G +I ++ GWW G G G FPA+YV+
Sbjct: 2 ARALYDYQAADDTEISFDPGDIITDIEQIDEGWWRG----TGPDGTYGLFPANYVE 53
>gnl|CDD|212789 cd11855, SH3_Sho1p, Src homology 3 domain of High osmolarity
signaling protein Sho1p. Sho1p (or Sho1), also called
SSU81 (Suppressor of SUA8-1 mutation), is a yeast
membrane protein that regulates adaptation to high salt
conditions by activating the HOG (high-osmolarity
glycerol) pathway. High salt concentrations lead to the
localization to the membrane of the MAPKK Pbs2, which is
then activated by the MAPKK Ste11 and in turn, activates
the MAPK Hog1. Pbs2 is localized to the membrane though
the interaction of its PxxP motif with the SH3 domain of
Sho1p. SH3 domains are protein interaction domains that
bind to proline-rich ligands with moderate affinity and
selectivity. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 55
Score = 37.8 bits (88), Expect = 2e-04
Identities = 18/50 (36%), Positives = 30/50 (60%), Gaps = 3/50 (6%)
Query: 108 AAYPYDST--EPGDLTFNQDEVIYVTKKENDWWTGTIGD-RTGLFPSNYV 154
A YPYD++ +P +L+F + E++ V+ WW + TG+ PSNY+
Sbjct: 4 ALYPYDASPDDPNELSFEKGEILEVSDTSGKWWQARKSNGETGICPSNYL 53
>gnl|CDD|212864 cd11931, SH3_SH3RF3_2, Second Src Homology 3 domain of SH3 domain
containing ring finger 3, an E3 ubiquitin-protein
ligase. SH3RF3 is also called POSH2 (Plenty of SH3s 2)
or SH3MD4 (SH3 multiple domains protein 4). It is a
scaffold protein with E3 ubiquitin-protein ligase
activity. It was identified in the screen for
interacting partners of p21-activated kinase 2 (PAK2).
It may play a role in regulating JNK mediated apoptosis
in certain conditions. It also interacts with GTP-loaded
Rac1. SH3RF3 is highly homologous to SH3RF1; it also
contains an N-terminal RING finger domain and four SH3
domains. This model represents the second SH3 domain,
located C-terminal of the first SH3 domain at the
N-terminal half, of SH3RF3. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 55
Score = 38.0 bits (88), Expect = 3e-04
Identities = 15/36 (41%), Positives = 25/36 (69%), Gaps = 1/36 (2%)
Query: 120 LTFNQDEVIYVTKK-ENDWWTGTIGDRTGLFPSNYV 154
LTF +DE++ V ++ + +W G +GD+ G+FP YV
Sbjct: 20 LTFTKDEILTVIRRVDENWAEGMLGDKIGIFPILYV 55
>gnl|CDD|212707 cd11773, SH3_Sla1p_1, First Src Homology 3 domain of the fungal
endocytic adaptor protein Sla1p. Sla1p facilitates
endocytosis by playing a role as an adaptor protein in
coupling components of the actin cytoskeleton to the
endocytic machinery. It interacts with Abp1p, Las17p and
Pan1p, which are activator proteins of actin-related
protein 2/3 (Arp2/3). Sla1p contains multiple domains
including three SH3 domains, a SAM (sterile alpha motif)
domain, and a Sla1 homology domain 1 (SHD1), which binds
to the NPFXD motif that is found in many integral
membrane proteins such as the Golgi-localized
Arf-binding protein Lsb5p and the P4-ATPases, Drs2p and
Dnf1p. SH3 domains are protein interaction domains that
bind to proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 57
Score = 37.8 bits (88), Expect = 3e-04
Identities = 16/56 (28%), Positives = 29/56 (51%), Gaps = 8/56 (14%)
Query: 106 YIAAYPYDSTEPGDLTFNQDEVIYVTKK-ENDWWTGTIGDRT-------GLFPSNY 153
Y A Y Y+ +LT +D+++Y+ +K ++DWW + + GL P+ Y
Sbjct: 2 YKALYDYEPQTEDELTIQEDDILYLLEKSDDDWWKVKLKVNSSDDDEPVGLVPATY 57
Score = 27.4 bits (61), Expect = 1.4
Identities = 17/68 (25%), Positives = 31/68 (45%), Gaps = 14/68 (20%)
Query: 41 YRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVEPCDETGE 100
Y+A+Y++ + DEL+ Q DI+ + K + + W +L+ + D+
Sbjct: 2 YKALYDYEPQTEDELTIQEDDILYLLEKSDDD--WWKVKLKVNSS----------DDDEP 49
Query: 101 V--VPEYY 106
V VP Y
Sbjct: 50 VGLVPATY 57
>gnl|CDD|212895 cd11962, SH3_Abp1_fungi_C1, First C-terminal Src homology 3 domain
of Fungal Actin-binding protein 1. Abp1 is an adaptor
protein that functions in receptor-mediated endocytosis
and vesicle trafficking. It contains an N-terminal
actin-binding module, the actin-depolymerizing factor
(ADF) homology domain, a central proline-rich region,
and a C-terminal SH3 domain (many yeast Abp1 proteins
contain two C-terminal SH3 domains). Yeast Abp1 also
contains two acidic domains that bind directly to the
Arp2/3 complex, which is required to initiate actin
polymerization. The SH3 domain of yeast Abp1 binds and
localizes the kinases, Ark1p and Prk1p, which facilitate
actin patch disassembly following vesicle
internalization. It also mediates the localization to
the actin patch of the synaptojanin-like protein, Sjl2p,
which plays a key role in endocytosis. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 54
Score = 37.5 bits (87), Expect = 3e-04
Identities = 17/47 (36%), Positives = 26/47 (55%), Gaps = 2/47 (4%)
Query: 110 YPYDSTEPGDLTFNQDEVIY-VTKKENDWWTGTIGD-RTGLFPSNYV 154
Y Y+ E ++ + E++ + + DWW GT +GLFPSNYV
Sbjct: 6 YDYEKDEDNEIELVEGEIVTNIEMVDEDWWMGTNSKGESGLFPSNYV 52
Score = 37.1 bits (86), Expect = 4e-04
Identities = 15/57 (26%), Positives = 26/57 (45%), Gaps = 4/57 (7%)
Query: 221 ATVLAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVKV 277
A VL Y ++ L G+++ + WW G K + G FP++YV++
Sbjct: 2 AVVLYDYEKDEDNEIELVEGEIVTNIEMVDEDWWMGT----NSKGESGLFPSNYVEL 54
Score = 27.1 bits (60), Expect = 2.1
Identities = 13/50 (26%), Positives = 27/50 (54%), Gaps = 1/50 (2%)
Query: 44 IYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVE 93
+Y++ +E+ G+I+ ++ E W+ +G++G FP +YVE
Sbjct: 5 LYDYEKDEDNEIELVEGEIVTN-IEMVDEDWWMGTNSKGESGLFPSNYVE 53
>gnl|CDD|212874 cd11941, SH3_ARHGEF37_C2, Second C-terminal Src homology 3 domain
of Rho guanine nucleotide exchange factor 37. ARHGEF37
contains a RhoGEF [or Dbl homology (DH)] domain
followed by a Bin/Amphiphysin/Rvs (BAR) domain, and two
C-terminal SH3 domains. Its specific function is
unknown. Its domain architecture is similar to the
C-terminal half of DNMBP or Tuba, a cdc42-specific GEF
that provides a functional link between dynamin, Rho
GTPase signaling, and actin dynamics, and plays an
important role in regulating cell junction
configuration. GEFs activate small GTPases by
exchanging bound GDP for free GTP. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 57
Score = 37.6 bits (87), Expect = 4e-04
Identities = 19/52 (36%), Positives = 27/52 (51%), Gaps = 2/52 (3%)
Query: 43 AIYEFVSRNGDELSFQPGDIIMV--PVKQNAEPGWLAGELRGQTGWFPESYV 92
A Y F +R+ E+S Q G + V P + P W E+ GQ G+ P SY+
Sbjct: 4 AAYPFTARSKHEVSLQAGQPVTVLEPHDKKGSPEWSLVEVNGQRGYVPSSYL 55
>gnl|CDD|212903 cd11970, SH3_PLCgamma1, Src homology 3 domain of Phospholipase C
(PLC) gamma 1. PLCgamma1 is widely expressed and is
essential in growth and development. It is activated by
the TrkA receptor tyrosine kinase and functions as a key
regulator of cell differentiation. It is also the
predominant PLCgamma in T cells and is required for T
cell and NK cell function. PLCs catalyze the hydrolysis
of phosphatidylinositol (4,5)-bisphosphate
[PtdIns(4,5)P2] to produce Ins(1,4,5)P3 and
diacylglycerol (DAG). Ins(1,4,5)P3 initiates the calcium
signaling cascade while DAG functions as an activator of
PKC. PLCgamma contains a Pleckstrin homology (PH) domain
followed by an elongation factor (EF) domain, two
catalytic regions of PLC domains that flank two tandem
SH2 domains, followed by a SH3 domain and C2 domain. The
SH3 domain of PLCgamma1 directly interacts with
dynamin-1 and can serve as a guanine nucleotide exchange
factor (GEF). It also interacts with Cbl, inhibiting its
phosphorylation and activity. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 60
Score = 36.9 bits (85), Expect = 6e-04
Identities = 17/52 (32%), Positives = 31/52 (59%), Gaps = 4/52 (7%)
Query: 227 YTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVKVM 278
Y A ++L+ ++ +I +K GWW G+ G K+Q+ WFP++YV+ +
Sbjct: 12 YKAQREDELTFTKNAIIQNVEKQEGGWWRGDY---GGKKQL-WFPSNYVEEI 59
Score = 36.9 bits (85), Expect = 7e-04
Identities = 20/53 (37%), Positives = 31/53 (58%), Gaps = 3/53 (5%)
Query: 42 RAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTG-WFPESYVE 93
+A++++ ++ DEL+F II KQ E GW G+ G+ WFP +YVE
Sbjct: 7 KALFDYKAQREDELTFTKNAIIQNVEKQ--EGGWWRGDYGGKKQLWFPSNYVE 57
Score = 36.1 bits (83), Expect = 0.002
Identities = 20/49 (40%), Positives = 28/49 (57%), Gaps = 2/49 (4%)
Query: 108 AAYPYDSTEPGDLTFNQDEVIY-VTKKENDWWTGTIGDRTGL-FPSNYV 154
A + Y + +LTF ++ +I V K+E WW G G + L FPSNYV
Sbjct: 8 ALFDYKAQREDELTFTKNAIIQNVEKQEGGWWRGDYGGKKQLWFPSNYV 56
>gnl|CDD|212850 cd11917, SH3_Sorbs2_3, Third (or C-terminal) Src Homology 3
domain of Sorbin and SH3 domain containing 2 (Sorbs2),
also called Arg-binding protein 2 (ArgBP2). Sorbs2 or
ArgBP2 is an adaptor protein containing one sorbin
homology (SoHo) and three SH3 domains. It regulates
actin-dependent processes including cell adhesion,
morphology, and migration. It is expressed in many
tissues and is abundant in the heart. Like vinexin, it
is found in focal adhesion where it interacts with
vinculin and afadin. It also localizes in epithelial
cell stress fibers and in cardiac muscle cell Z-discs.
Sorbs2 has been implicated to play roles in the
signaling of c-Arg, Akt, and Pyk2. Other interaction
partners of Sorbs2 include c-Abl, flotillin, spectrin,
dynamin 1/2, synaptojanin, PTP-PEST, among others. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 61
Score = 36.9 bits (85), Expect = 6e-04
Identities = 20/55 (36%), Positives = 31/55 (56%), Gaps = 4/55 (7%)
Query: 41 YRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQT--GWFPESYVE 93
++A+Y ++ RN DEL + GD+I V + + GW G R G FP +YV+
Sbjct: 7 FQALYNYMPRNEDELELREGDVI--DVMEKCDDGWFVGTSRRTKFFGTFPGNYVK 59
Score = 29.2 bits (65), Expect = 0.38
Identities = 16/53 (30%), Positives = 27/53 (50%), Gaps = 3/53 (5%)
Query: 224 LAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVK 276
L Y + ++L L G +I + +K GW+ G + + + G FP +YVK
Sbjct: 10 LYNYMPRNEDELELREGDVIDVMEKCDDGWFVGTSR---RTKFFGTFPGNYVK 59
Score = 29.2 bits (65), Expect = 0.46
Identities = 19/54 (35%), Positives = 25/54 (46%), Gaps = 3/54 (5%)
Query: 104 EYYIAAYPYDSTEPGDLTFNQDEVIYVTKKENDWWTGTIGDRT---GLFPSNYV 154
E + A Y Y +L + +VI V +K +D W RT G FP NYV
Sbjct: 5 EPFQALYNYMPRNEDELELREGDVIDVMEKCDDGWFVGTSRRTKFFGTFPGNYV 58
>gnl|CDD|212804 cd11871, SH3_p67phox_N, N-terminal (or first) Src Homology 3
domain of the p67phox subunit of NADPH oxidase.
p67phox, also called Neutrophil cytosol factor 2
(NCF-2), is a cytosolic subunit of the phagocytic NADPH
oxidase complex (also called Nox2 or gp91phox) which
plays a crucial role in the cellular response to
bacterial infection. NADPH oxidase catalyzes the
transfer of electrons from NADPH to oxygen during
phagocytosis forming superoxide and reactive oxygen
species. p67phox plays a regulatory role and contains
N-terminal TPR, first SH3 (or N-terminal or central
SH3), PB1, and C-terminal SH3 domains. It binds, via
its C-terminal SH3 domain, to a proline-rich region of
p47phox and upon activation, this complex assembles
with flavocytochrome b558, the Nox2-p22phox
heterodimer. Concurrently, RacGTP translocates to the
membrane and interacts with the TPR domain of p67phox,
which leads to the activation of NADPH oxidase. The PB1
domain of p67phox binds to its partner PB1 domain in
p40phox, and this facilitates the assembly of
p47phox-p67phox at the membrane. The N-terminal SH3
domain increases the affinity of p67phox for the
oxidase complex. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP
motifs. They play versatile and diverse roles in the
cell including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 54
Score = 36.8 bits (85), Expect = 6e-04
Identities = 18/54 (33%), Positives = 27/54 (50%), Gaps = 2/54 (3%)
Query: 41 YRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVEP 94
+R +YEFV +EL PG+I+ V K W G+ G P +++EP
Sbjct: 2 HRVLYEFVPETKEELQVLPGNIVFVLKKGT--DNWATVVFNGKKGLVPCNFLEP 53
Score = 27.6 bits (61), Expect = 1.3
Identities = 11/31 (35%), Positives = 17/31 (54%), Gaps = 1/31 (3%)
Query: 127 VIYVTKKEND-WWTGTIGDRTGLFPSNYVVP 156
+++V KK D W T + GL P N++ P
Sbjct: 23 IVFVLKKGTDNWATVVFNGKKGLVPCNFLEP 53
>gnl|CDD|212898 cd11965, SH3_ASAP1, Src homology 3 domain of ArfGAP with SH3
domain, ankyrin repeat and PH domain containing protein
1. ASAP1 is also called DDEF1 (Development and
Differentiation Enhancing Factor 1), AMAP1, centaurin
beta-4, or PAG2. an Arf GTPase activating protein (GAP)
with activity towards Arf1 and Arf5 but not Arf6.
However, it has been shown to bind GTP-Arf6 stably
without GAP activity. It has been implicated in cell
growth, migration, and survival, as well as in tumor
invasion and malignancy. It binds paxillin and
cortactin, two components of invadopodia which are
essential for tumor invasiveness. It also binds focal
adhesion kinase (FAK) and the SH2/SH3 adaptor CrkL.
ASAP1 contains an N-terminal BAR domain, followed by a
Pleckstrin homology (PH) domain, an Arf GAP domain,
ankyrin (ANK) repeats, and a C-terminal SH3 domain. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 57
Score = 36.9 bits (85), Expect = 7e-04
Identities = 21/56 (37%), Positives = 33/56 (58%), Gaps = 5/56 (8%)
Query: 40 RYRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQ---TGWFPESYV 92
R + IY+ + N DEL+F G++I+V +++ E W G + GQ G FP S+V
Sbjct: 1 RVKTIYDCQADNDDELTFVEGEVIIVTGEEDQE--WWIGHIEGQPERKGVFPVSFV 54
Score = 35.4 bits (81), Expect = 0.002
Identities = 18/40 (45%), Positives = 27/40 (67%), Gaps = 4/40 (10%)
Query: 119 DLTFNQDEVIYVTKKEN-DWWTGTIG---DRTGLFPSNYV 154
+LTF + EVI VT +E+ +WW G I +R G+FP ++V
Sbjct: 15 ELTFVEGEVIIVTGEEDQEWWIGHIEGQPERKGVFPVSFV 54
>gnl|CDD|212704 cd11770, SH3_Nephrocystin, Src Homology 3 domain of Nephrocystin
(or Nephrocystin-1). Nephrocystin contains an SH3
domain involved in signaling pathways that regulate cell
adhesion and cytoskeletal organization. It is a protein
that in humans is associated with juvenile
nephronophthisis, an inherited kidney disease
characterized by renal fibrosis that lead to chronic
renal failure in children. It is localized in cell-cell
junctions in renal duct cells, and is known to interact
with Ack1, an activated Cdc42-associated kinase. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 54
Score = 36.5 bits (85), Expect = 8e-04
Identities = 18/56 (32%), Positives = 28/56 (50%), Gaps = 4/56 (7%)
Query: 222 TVLAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVKV 277
L+ + A LS +G+++ I K GWW E +KG + G P +Y+KV
Sbjct: 3 EALSDFQAEQEGDLSFKKGEVLRIISKRADGWWLAE-NSKGNR---GLVPKTYLKV 54
Score = 34.6 bits (80), Expect = 0.003
Identities = 18/53 (33%), Positives = 28/53 (52%), Gaps = 4/53 (7%)
Query: 105 YYIAAYPYDSTEPGDLTFNQDEVIYVTKKEND-WWTG--TIGDRTGLFPSNYV 154
Y A + + + GDL+F + EV+ + K D WW + G+R GL P Y+
Sbjct: 1 LYEALSDFQAEQEGDLSFKKGEVLRIISKRADGWWLAENSKGNR-GLVPKTYL 52
Score = 32.7 bits (75), Expect = 0.016
Identities = 15/55 (27%), Positives = 32/55 (58%), Gaps = 1/55 (1%)
Query: 40 RYRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVEP 94
Y A+ +F + +LSF+ G+++ + + + A+ WLA +G G P++Y++
Sbjct: 1 LYEALSDFQAEQEGDLSFKKGEVLRI-ISKRADGWWLAENSKGNRGLVPKTYLKV 54
>gnl|CDD|212936 cd12003, SH3_EFS, Src homology 3 domain of CAS (Crk-Associated
Substrate) scaffolding protein family member, Embryonal
Fyn-associated Substrate. EFS is also called HEFS,
CASS3 (Cas scaffolding protein family member 3) or SIN
(Src-interacting protein). It was identified based on
interactions with the Src kinases, Fyn and Yes. It
plays a role in thymocyte development and acts as a
negative regulator of T cell proliferation. CAS
proteins function as molecular scaffolds to regulate
protein complexes that are involved in many cellular
processes. They share a common domain structure that
includes an N-terminal SH3 domain, an unstructured
substrate domain that contains many YxxP motifs, a
serine-rich four-helix bundle, and a FAT-like
C-terminal domain. The SH3 domain of CAS proteins binds
to diverse partners including FAK, FRNK, Pyk2,
PTP-PEST, DOCK180, among others. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 62
Score = 36.8 bits (85), Expect = 8e-04
Identities = 18/48 (37%), Positives = 30/48 (62%), Gaps = 1/48 (2%)
Query: 42 RAIYEFVSRNGDELSFQPGDIIMVPVKQNAE-PGWLAGELRGQTGWFP 88
+A+Y+ + + +ELSF+ GD++MV +++ PGW L GQ G P
Sbjct: 4 KALYDNAAESPEELSFRRGDVLMVLKREHGSLPGWWLCSLHGQQGIAP 51
Score = 28.7 bits (64), Expect = 0.62
Identities = 19/63 (30%), Positives = 32/63 (50%), Gaps = 8/63 (12%)
Query: 219 EIATVLAPYTATSSEQLSLSRGQLIMIRKK---TTTGWWEGELQAKGKKRQVGWFPASYV 275
++A L A S E+LS RG ++M+ K+ + GWW L Q G PA+ +
Sbjct: 1 QLAKALYDNAAESPEELSFRRGDVLMVLKREHGSLPGWWLCSLHG-----QQGIAPANRL 55
Query: 276 KVM 278
+++
Sbjct: 56 RLL 58
>gnl|CDD|212872 cd11939, SH3_ephexin1, Src homology 3 domain of the Rho guanine
nucleotide exchange factor, ephexin-1 (also called NGEF
or ARHGEF27). Ephexin-1, also called NGEF (neuronal
GEF) or ARHGEF27, activates RhoA, Tac1, and Cdc42 by
exchanging bound GDP for free GTP. It is expressed
mainly in the brain in a region associated with
movement control. It regulates the stability of
postsynaptic acetylcholine receptor (AChR) clusters and
thus, plays a critical role in the maturation and
neurotransmission of neuromuscular junctions. Ephexin-1
directly interacts with the ephrin receptor EphA4 and
their coexpression enhances the ability of ephexin-1 to
activate RhoA. It is required for normal axon growth
and EphA-induced growth cone collapse. Ephexin-1
contains RhoGEF (also called Dbl-homologous or DH),
Pleckstrin Homology (PH), and SH3 domains. The SH3
domains of ARHGEFs play an autoinhibitory role through
intramolecular interactions with a proline-rich region
N-terminal to the DH domain. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles
in the cell including the regulation of enzymes,
changing the subcellular localization of signaling
pathway components, and mediating the formation of
multiprotein complex assemblies.
Length = 55
Score = 36.5 bits (84), Expect = 0.001
Identities = 19/52 (36%), Positives = 30/52 (57%), Gaps = 4/52 (7%)
Query: 44 IYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGEL--RGQTGWFPESYVE 93
++ +VS+ DELS + D++ + K + GW+ GE + GWFP S VE
Sbjct: 5 VHPYVSQEPDELSLELADVLNILDK--TDDGWIFGERLHDQERGWFPSSVVE 54
Score = 34.9 bits (80), Expect = 0.003
Identities = 18/51 (35%), Positives = 27/51 (52%), Gaps = 3/51 (5%)
Query: 226 PYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVK 276
PY + ++LSL ++ I KT GW GE ++ GWFP+S V+
Sbjct: 7 PYVSQEPDELSLELADVLNILDKTDDGWIFGERLHDQER---GWFPSSVVE 54
Score = 27.6 bits (61), Expect = 1.3
Identities = 17/50 (34%), Positives = 26/50 (52%), Gaps = 7/50 (14%)
Query: 110 YPYDSTEPGDLTFNQDEVIYVTKKENDWWTGTIGDR-----TGLFPSNYV 154
+PY S EP +L+ +V+ + K +D W G+R G FPS+ V
Sbjct: 6 HPYVSQEPDELSLELADVLNILDKTDDGW--IFGERLHDQERGWFPSSVV 53
>gnl|CDD|212949 cd12016, SH3_Tks_2, Second Src homology 3 domain of Tyrosine kinase
substrate (Tks) proteins. Tks proteins are Src
substrates and scaffolding proteins that play important
roles in the formation of podosomes and invadopodia, the
dynamic actin-rich structures that are related to cell
migration and cancer cell invasion. Vertebrates contain
two Tks proteins, Tks4 (Tyr kinase substrate with four
SH3 domains) and Tks5 (Tyr kinase substrate with five
SH3 domains), which display partially overlapping but
non-redundant functions. Both associate with the ADAMs
family of transmembrane metalloproteases, which function
as sheddases and mediators of cell and matrix
interactions. Tks5 interacts with N-WASP and Nck, while
Tks4 is essential for the localization of MT1-MMP
(membrane-type 1 matrix metalloproteinase) to
invadopodia. Tks proteins contain an N-terminal Phox
homology (PX) domain and four or five SH3 domains. This
model characterizes the second SH3 domain of Tks
proteins. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate affinity
and selectivity, preferentially to PxxP motifs. They
play versatile and diverse roles in the cell including
the regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 54
Score = 36.3 bits (84), Expect = 0.001
Identities = 15/51 (29%), Positives = 26/51 (50%), Gaps = 5/51 (9%)
Query: 226 PYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVK 276
Y A + +++ G ++ + +K GWW+ Q K GW PA+Y+K
Sbjct: 8 AYKAENEDEIGFETGVVVEVIQKNLDGWWKIRYQGK-----EGWAPATYLK 53
Score = 33.6 bits (77), Expect = 0.009
Identities = 15/54 (27%), Positives = 31/54 (57%), Gaps = 2/54 (3%)
Query: 40 RYRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVE 93
+Y + + N DE+ F+ G ++ V +++N + GW +G+ GW P +Y++
Sbjct: 2 KYITTQAYKAENEDEIGFETGVVVEV-IQKNLD-GWWKIRYQGKEGWAPATYLK 53
Score = 25.9 bits (57), Expect = 5.5
Identities = 14/52 (26%), Positives = 22/52 (42%), Gaps = 1/52 (1%)
Query: 104 EYYIAAYPYDSTEPGDLTFNQDEVIYVTKKEND-WWTGTIGDRTGLFPSNYV 154
E YI Y + ++ F V+ V +K D WW + G P+ Y+
Sbjct: 1 EKYITTQAYKAENEDEIGFETGVVVEVIQKNLDGWWKIRYQGKEGWAPATYL 52
>gnl|CDD|212869 cd11936, SH3_UBASH3B, Src homology 3 domain of
Ubiquitin-associated and SH3 domain-containing protein
B. UBASH3B, also called Suppressor of T cell receptor
Signaling (STS)-1 or T cell Ubiquitin LigAnd (TULA)-2
is an active phosphatase that is expressed
ubiquitously. The phosphatase activity of UBASH3B is
essential for its roles in the suppression of TCR
signaling and the regulation of EGFR. It also interacts
with Syk and functions as a negative regulator of
platelet glycoprotein VI signaling. TULA proteins
contain an N-terminal UBA domain, a central SH3 domain,
and a C-terminal histidine phosphatase domain. They
bind c-Cbl through the SH3 domain and to ubiquitin via
UBA. SH3 domains are protein interaction domains that
bind to proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 62
Score = 36.6 bits (84), Expect = 0.001
Identities = 21/57 (36%), Positives = 31/57 (54%), Gaps = 4/57 (7%)
Query: 42 RAIYEFVSRNGDELSFQPGD-IIMVPVKQNA-EPGWLAGE--LRGQTGWFPESYVEP 94
+ IY + +N DEL PGD I M P++Q + GW+ G G +G PE+Y+
Sbjct: 5 QVIYPYTPQNDDELELVPGDYIFMSPMEQTSTSEGWIYGTSLTTGCSGLLPENYITK 61
>gnl|CDD|212837 cd11904, SH3_Nck1_3, Third Src Homology 3 domain of Nck1 adaptor
protein. Nck1 (also called Nckalpha) plays a crucial
role in connecting signaling pathways of tyrosine
kinase receptors and important effectors in actin
dynamics and cytoskeletal remodeling. It binds and
activates RasGAP, resulting in the downregulation of
Ras. It is also involved in the signaling of
endothilin-mediated inhibition of cell migration. Nck
adaptor proteins regulate actin cytoskeleton dynamics
by linking proline-rich effector molecules to protein
tyrosine kinases and phosphorylated signaling
intermediates. They contain three SH3 domains and a
C-terminal SH2 domain. They function downstream of the
PDGFbeta receptor and are involved in Rho GTPase
signaling and actin dynamics. Vertebrates contain two
Nck adaptor proteins: Nck1 (also called Nckalpha) and
Nck2, which show partly overlapping functions but also
bind distinct targets. The third SH3 domain of Nck
appears to prefer ligands with a PxAPxR motif. SH3
domains are protein interaction domains that usually
bind to proline-rich ligands with moderate affinity and
selectivity, preferentially a PxxP motif. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 57
Score = 36.2 bits (83), Expect = 0.001
Identities = 19/52 (36%), Positives = 31/52 (59%), Gaps = 1/52 (1%)
Query: 42 RAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWL-AGELRGQTGWFPESYV 92
+A+Y F S N +EL+F+ G+++ V K +P W + GQ G P++YV
Sbjct: 4 QALYPFSSSNDEELNFEKGEVMDVIEKPENDPEWWKCRKANGQVGLVPKNYV 55
Score = 33.5 bits (76), Expect = 0.010
Identities = 21/51 (41%), Positives = 28/51 (54%), Gaps = 4/51 (7%)
Query: 108 AAYPYDSTEPGDLTFNQDEVIYVTKK-END--WWT-GTIGDRTGLFPSNYV 154
A YP+ S+ +L F + EV+ V +K END WW + GL P NYV
Sbjct: 5 ALYPFSSSNDEELNFEKGEVMDVIEKPENDPEWWKCRKANGQVGLVPKNYV 55
>gnl|CDD|212885 cd11952, SH3_iASPP, Src Homology 3 (SH3) domain of Inhibitor of
ASPP protein (iASPP). iASPP, also called
RelA-associated inhibitor (RAI), is an oncoprotein that
inhibits the apoptotic transactivation potential of
p53. It is upregulated in human breast cancers
expressing wild-type p53, in acute leukemias regardless
of the p53 mutation status, as well as in ovarian
cancer where it is associated with poor patient outcome
and chemoresistance. iASPP is also a binding partner
and negative regulator of p65RelA, which promotes cell
proliferation and inhibits apoptosis; p65RelA has the
opposite effect on cell growth compared to the p53
family. It contains a proline-rich region, four ankyrin
(ANK) repeats, and an SH3 domain at its C-terminal
half. The SH3 domain and the ANK repeats of iASPP
contribute to the p53 binding site; they bind to the
DNA binding domain of p53. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles
in the cell including the regulation of enzymes,
changing the subcellular localization of signaling
pathway components, and mediating the formation of
multiprotein complex assemblies.
Length = 56
Score = 36.1 bits (83), Expect = 0.001
Identities = 16/49 (32%), Positives = 27/49 (55%)
Query: 43 AIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESY 91
A++++ + DELSF+ GD++ V K W L G+ G+ P +Y
Sbjct: 5 ALWDYSAEFPDELSFKEGDMVTVLRKDGEGTDWWWASLCGREGYVPRNY 53
Score = 29.1 bits (65), Expect = 0.35
Identities = 15/49 (30%), Positives = 26/49 (53%), Gaps = 3/49 (6%)
Query: 108 AAYPYDSTEPGDLTFNQDEVIYVTKK---ENDWWTGTIGDRTGLFPSNY 153
A + Y + P +L+F + +++ V +K DWW ++ R G P NY
Sbjct: 5 ALWDYSAEFPDELSFKEGDMVTVLRKDGEGTDWWWASLCGREGYVPRNY 53
>gnl|CDD|212915 cd11982, SH3_Shank1, Src homology 3 domain of SH3 and multiple
ankyrin repeat domains protein 1. Shank1, also called
SSTRIP (Somatostatin receptor-interacting protein), is a
brain-specific protein that plays a role in the
construction of postsynaptic density (PSD) and the
maturation of dendritic spines. Mice deficient in Shank1
show altered PSD composition, thinner PSDs, smaller
dendritic spines, and weaker basal synaptic
transmission, although synaptic plasticity is normal.
They show increased anxiety and impaired fear memory,
but also show better spatial learning. Shank proteins
carry scaffolding functions through multiple sites of
protein-protein interaction in its domain architecture,
including ankyrin (ANK) repeats, a long proline rich
region, as well as SH3, PDZ, and SAM domains. The SH3
domain of Shank binds GRIP, a scaffold protein that
binds AMPA receptors and Eph receptors/ligands. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 52
Score = 36.1 bits (83), Expect = 0.001
Identities = 20/50 (40%), Positives = 30/50 (60%), Gaps = 5/50 (10%)
Query: 226 PYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYV 275
PY + + ++SLS+G+ I + G+WEG Q KG+ VGWFP+ V
Sbjct: 8 PYQSQAEGEISLSKGEKIKVLSVGEGGFWEG--QVKGR---VGWFPSDCV 52
Score = 31.5 bits (71), Expect = 0.050
Identities = 17/50 (34%), Positives = 28/50 (56%), Gaps = 1/50 (2%)
Query: 106 YIAAYPYDSTEPGDLTFNQDEVIYV-TKKENDWWTGTIGDRTGLFPSNYV 154
++A PY S G+++ ++ E I V + E +W G + R G FPS+ V
Sbjct: 3 FMAVKPYQSQAEGEISLSKGEKIKVLSVGEGGFWEGQVKGRVGWFPSDCV 52
Score = 29.2 bits (65), Expect = 0.29
Identities = 16/54 (29%), Positives = 28/54 (51%), Gaps = 2/54 (3%)
Query: 39 RRYRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYV 92
R + A+ + S+ E+S G+ + V E G+ G+++G+ GWFP V
Sbjct: 1 RTFMAVKPYQSQAEGEISLSKGE--KIKVLSVGEGGFWEGQVKGRVGWFPSDCV 52
>gnl|CDD|212703 cd11769, SH3_CSK, Src Homology 3 domain of C-terminal Src kinase.
CSK is a cytoplasmic (or nonreceptor) tyr kinase
containing the Src homology domains, SH3 and SH2,
N-terminal to the catalytic tyr kinase domain. They
negatively regulate the activity of Src kinases that
are anchored to the plasma membrane. To inhibit Src
kinases, CSK is translocated to the membrane via
binding to specific transmembrane proteins, G-proteins,
or adaptor proteins near the membrane. CSK catalyzes
the tyr phosphorylation of the regulatory C-terminal
tail of Src kinases, resulting in their inactivation.
It is expressed in a wide variety of tissues and plays
a role, as a regulator of Src, in cell proliferation,
survival, and differentiation, and consequently, in
cancer development and progression. In addition, CSK
also shows Src-independent functions. It is a critical
component in G-protein signaling, and plays a role in
cytoskeletal reorganization and cell migration. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 57
Score = 36.1 bits (84), Expect = 0.001
Identities = 17/52 (32%), Positives = 27/52 (51%), Gaps = 2/52 (3%)
Query: 43 AIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGW-LAGELRGQTGWFPESYVE 93
A Y F + ++L F+ GDI+ + V +P W A G+ G P +YV+
Sbjct: 6 AKYNFNGASEEDLPFKKGDILTI-VAVTKDPNWYKAKNKDGREGMIPANYVQ 56
Score = 33.8 bits (78), Expect = 0.008
Identities = 15/51 (29%), Positives = 25/51 (49%), Gaps = 3/51 (5%)
Query: 107 IAAYPYDSTEPGDLTFNQDEVIYVTKKEND--WWTGTIGD-RTGLFPSNYV 154
IA Y ++ DL F + +++ + D W+ D R G+ P+NYV
Sbjct: 5 IAKYNFNGASEEDLPFKKGDILTIVAVTKDPNWYKAKNKDGREGMIPANYV 55
Score = 31.1 bits (71), Expect = 0.072
Identities = 15/52 (28%), Positives = 24/52 (46%), Gaps = 5/52 (9%)
Query: 227 YTATSSEQLSLSRGQLIMIRKKTTT-GWWEGELQAKGKKRQVGWFPASYVKV 277
+ S E L +G ++ I T W+ +AK K + G PA+YV+
Sbjct: 10 FNGASEEDLPFKKGDILTIVAVTKDPNWY----KAKNKDGREGMIPANYVQK 57
>gnl|CDD|212941 cd12008, SH3_Src, Src homology 3 domain of Src Protein Tyrosine
Kinase. Src (or c-Src) is a cytoplasmic (or
non-receptor) PTK and is the vertebrate homolog of the
oncogenic protein (v-Src) from Rous sarcoma virus.
Together with other Src subfamily proteins, it is
involved in signaling pathways that regulate cytokine
and growth factor responses, cytoskeleton dynamics, cell
proliferation, survival, and differentiation. Src also
play a role in regulating cell adhesion, invasion, and
motility in cancer cells, and tumor vasculature,
contributing to cancer progression and metastasis.
Elevated levels of Src kinase activity have been
reported in a variety of human cancers. Several
inhibitors of Src have been developed as anti-cancer
drugs. Src is also implicated in acute inflammatory
responses and osteoclast function. Src kinases contain
an N-terminal SH4 domain with a myristoylation site,
followed by SH3 and SH2 domains, a tyr kinase domain,
and a regulatory C-terminal region containing a
conserved tyr. They are activated by autophosphorylation
at the tyr kinase domain, but are negatively regulated
by phosphorylation at the C-terminal tyr by Csk
(C-terminal Src Kinase). The SH3 domain of Src kinases
contributes to substrate recruitment by binding adaptor
proteins/substrates, and regulation of kinase activity
through an intramolecular interaction. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 56
Score = 35.9 bits (82), Expect = 0.001
Identities = 23/55 (41%), Positives = 30/55 (54%), Gaps = 5/55 (9%)
Query: 106 YIAAYPYDSTEPGDLTFNQDEVI-YVTKKENDWWTG---TIGDRTGLFPSNYVVP 156
++A Y Y+S DL+F + E + V E DWW T G +TG PSNYV P
Sbjct: 2 FVALYDYESRTETDLSFKKGERLQIVNNTEGDWWLAHSLTTG-QTGYIPSNYVAP 55
Score = 33.9 bits (77), Expect = 0.007
Identities = 21/55 (38%), Positives = 32/55 (58%), Gaps = 2/55 (3%)
Query: 41 YRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELR-GQTGWFPESYVEP 94
+ A+Y++ SR +LSF+ G+ + + V WLA L GQTG+ P +YV P
Sbjct: 2 FVALYDYESRTETDLSFKKGERLQI-VNNTEGDWWLAHSLTTGQTGYIPSNYVAP 55
Score = 26.2 bits (57), Expect = 4.0
Identities = 15/52 (28%), Positives = 23/52 (44%), Gaps = 3/52 (5%)
Query: 224 LAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYV 275
L Y + + LS +G+ + I T WW G Q G+ P++YV
Sbjct: 5 LYDYESRTETDLSFKKGERLQIVNNTEGDWWLAHSLTTG---QTGYIPSNYV 53
>gnl|CDD|212906 cd11973, SH3_ASEF, Src homology 3 domain of APC-Stimulated
guanine nucleotide Exchange Factor. ASEF, also called
ARHGEF4, exists in an autoinhibited form and is
activated upon binding of the tumor suppressor APC
(adenomatous polyposis coli). GEFs activate small
GTPases by exchanging bound GDP for free GTP. ASEF can
activate Rac1 or Cdc42. Truncated ASEF, which is found
in colorectal cancers, is constitutively active and has
been shown to promote angiogenesis and cancer cell
migration. ASEF contains a SH3 domain followed by
RhoGEF (also called Dbl-homologous or DH) and
Pleckstrin Homology (PH) domains. In its autoinhibited
form, the SH3 domain of ASEF forms an extensive
interface with the DH and PH domains, blocking the Rac
binding site. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP
motifs. They play versatile and diverse roles in the
cell including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 73
Score = 36.1 bits (83), Expect = 0.002
Identities = 19/50 (38%), Positives = 28/50 (56%), Gaps = 2/50 (4%)
Query: 43 AIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYV 92
A+++ V+ + EL F+ GD+I V N E W G + GWFP S+V
Sbjct: 22 ALWDHVTMDDQELGFKAGDVIEVMDATNKE--WWWGRVLDSEGWFPASFV 69
Score = 30.0 bits (67), Expect = 0.28
Identities = 16/57 (28%), Positives = 25/57 (43%), Gaps = 5/57 (8%)
Query: 221 ATVLAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVKV 277
A L + ++L G +I + T WW G + GWFPAS+V++
Sbjct: 20 AEALWDHVTMDDQELGFKAGDVIEVMDATNKEWWWGRVLDSE-----GWFPASFVRL 71
Score = 29.2 bits (65), Expect = 0.49
Identities = 15/48 (31%), Positives = 26/48 (54%), Gaps = 1/48 (2%)
Query: 108 AAYPYDSTEPGDLTFNQDEVIYVTKKEN-DWWTGTIGDRTGLFPSNYV 154
A + + + + +L F +VI V N +WW G + D G FP+++V
Sbjct: 22 ALWDHVTMDDQELGFKAGDVIEVMDATNKEWWWGRVLDSEGWFPASFV 69
>gnl|CDD|212935 cd12002, SH3_NEDD9, Src homology 3 domain of CAS (Crk-Associated
Substrate) scaffolding protein family member, Neural
precursor cell Expressed, Developmentally
Down-regulated 9. NEDD9 is also called human enhancer
of filamentation 1 (HEF1) or CAS-L (Crk-associated
substrate in lymphocyte). It was first described as a
gene predominantly expressed in early embryonic brain,
and was also isolated from a screen of human proteins
that regulate filamentous budding in yeast, and as a
tyrosine phosphorylated protein in lymphocytes. It
promotes metastasis in different solid tumors. NEDD9
localizes in focal adhesions and associates with FAK
and Abl kinase. It also interacts with SMAD3 and the
proteasomal machinery which allows its rapid turnover;
these interactions are not shared by other CAS
proteins. CAS proteins function as molecular scaffolds
to regulate protein complexes that are involved in many
cellular processes. They share a common domain
structure that includes an N-terminal SH3 domain, an
unstructured substrate domain that contains many YxxP
motifs, a serine-rich four-helix bundle, and a FAT-like
C-terminal domain. The SH3 domain of CAS proteins binds
to diverse partners including FAK, FRNK, Pyk2,
PTP-PEST, DOCK180, among others. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 57
Score = 35.7 bits (82), Expect = 0.002
Identities = 19/49 (38%), Positives = 28/49 (57%), Gaps = 3/49 (6%)
Query: 42 RAIYEFVSRNGDELSFQPGDIIMVPVKQNAE--PGWLAGELRGQTGWFP 88
RA+Y+ V +EL+F+ GDI+ V ++QN GW L G+ G P
Sbjct: 3 RALYDNVPECAEELAFRKGDILTV-IEQNTGGLEGWWLCSLHGRQGIAP 50
>gnl|CDD|212889 cd11956, SH3_srGAP4, Src homology 3 domain of Slit-Robo GTPase
Activating Protein 4. srGAP4, also called ARHGAP4, is
highly expressed in hematopoietic cells and may play a
role in lymphocyte differentiation. It is able to
stimulate the GTPase activity of Rac1, Cdc42, and RhoA.
In the nervous system, srGAP4 has been detected in
differentiating neurites and may be involved in axon and
dendritic growth. srGAPs are Rho GAPs that interact with
Robo1, the transmembrane receptor of Slit proteins. Slit
proteins are secreted proteins that control axon
guidance and the migration of neurons and leukocytes.
srGAPs contain an N-terminal F-BAR domain, a Rho GAP
domain, and a C-terminal SH3 domain. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 55
Score = 35.6 bits (82), Expect = 0.002
Identities = 16/51 (31%), Positives = 28/51 (54%), Gaps = 5/51 (9%)
Query: 227 YTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVKV 277
YT ++++LS RG ++++ K ++ WW GE G + G P Y+ V
Sbjct: 10 YTGRTAQELSFKRGDVLLLHSKASSDWWRGE--HNGMR---GLIPHKYISV 55
Score = 35.2 bits (81), Expect = 0.002
Identities = 16/50 (32%), Positives = 28/50 (56%), Gaps = 2/50 (4%)
Query: 43 AIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYV 92
A +++ R ELSF+ GD++++ K +++ W GE G G P Y+
Sbjct: 6 ACFDYTGRTAQELSFKRGDVLLLHSKASSD--WWRGEHNGMRGLIPHKYI 53
Score = 35.2 bits (81), Expect = 0.002
Identities = 14/49 (28%), Positives = 25/49 (51%), Gaps = 1/49 (2%)
Query: 107 IAAYPYDSTEPGDLTFNQDEVIYV-TKKENDWWTGTIGDRTGLFPSNYV 154
+A + Y +L+F + +V+ + +K +DWW G GL P Y+
Sbjct: 5 VACFDYTGRTAQELSFKRGDVLLLHSKASSDWWRGEHNGMRGLIPHKYI 53
>gnl|CDD|212766 cd11832, SH3_Shank, Src homology 3 domain of SH3 and multiple
ankyrin repeat domains (Shank) proteins. Shank proteins
carry scaffolding functions through multiple sites of
protein-protein interaction in its domain architecture,
including ankyrin (ANK) repeats, a long proline rich
region, as well as SH3, PDZ, and SAM domains. They bind
a variety of membrane and cytosolic proteins, and exist
in alternatively spliced isoforms. They are highly
enriched in postsynaptic density (PSD) where they
interact with the cytoskeleton and with postsynaptic
membrane receptors including NMDA and glutamate
receptors. They are crucial in the construction and
organization of the PSD and dendritic spines of
excitatory synapses. There are three members of this
family (Shank1, Shank2, Shank3) which show distinct and
cell-type specific patterns of expression. Shank1 is
brain-specific; Shank2 is found in neurons, glia,
endocrine cells, liver, and kidney; Shank3 is widely
expressed. The SH3 domain of Shank binds GRIP, a
scaffold protein that binds AMPA receptors and Eph
receptors/ligands. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP motifs.
They play versatile and diverse roles in the cell
including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 50
Score = 35.5 bits (82), Expect = 0.002
Identities = 16/48 (33%), Positives = 27/48 (56%), Gaps = 1/48 (2%)
Query: 105 YYIAAYPYDSTEPGDLTFNQDEVIYVTK-KENDWWTGTIGDRTGLFPS 151
Y+IA Y E G+++ ++ + + V E +W G++ RTG FPS
Sbjct: 1 YFIAVKSYSPQEEGEISLHKGDRVKVLSIGEGGFWEGSVRGRTGWFPS 48
Score = 33.6 bits (77), Expect = 0.009
Identities = 17/49 (34%), Positives = 25/49 (51%), Gaps = 2/49 (4%)
Query: 40 RYRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFP 88
+ A+ + + E+S GD V V E G+ G +RG+TGWFP
Sbjct: 1 YFIAVKSYSPQEEGEISLHKGDR--VKVLSIGEGGFWEGSVRGRTGWFP 47
Score = 28.9 bits (65), Expect = 0.32
Identities = 13/47 (27%), Positives = 23/47 (48%), Gaps = 5/47 (10%)
Query: 226 PYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPA 272
Y+ ++SL +G + + G+WEG +G+ GWFP+
Sbjct: 7 SYSPQEEGEISLHKGDRVKVLSIGEGGFWEG--SVRGR---TGWFPS 48
>gnl|CDD|212907 cd11974, SH3_ASEF2, Src homology 3 domain of APC-Stimulated
guanine nucleotide Exchange Factor 2. ASEF2, also
called Spermatogenesis-associated protein 13 (SPATA13),
is a GEF that localizes with actin at the leading edge
of cells and is important in cell migration and
adhesion dynamics. GEFs activate small GTPases by
exchanging bound GDP for free GTP. ASEF2 can activate
both Rac 1 and Cdc42, but only Rac1 activation is
necessary for increased cell migration and adhesion
turnover. Together with APC (adenomatous polyposis
coli) and Neurabin2, a scaffold protein that binds
F-actin, it is involved in regulating HGF-induced cell
migration. ASEF2 contains a SH3 domain followed by
RhoGEF (also called Dbl-homologous or DH) and
Pleckstrin Homology (PH) domains. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 54
Score = 35.4 bits (81), Expect = 0.002
Identities = 17/50 (34%), Positives = 28/50 (56%), Gaps = 2/50 (4%)
Query: 43 AIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYV 92
A+++ V+ + EL+F+ GD+I V N + W G + WFP S+V
Sbjct: 5 ALWDHVTMDDQELAFKAGDVIRVLEASNKD--WWWGRNEDREAWFPASFV 52
Score = 33.1 bits (75), Expect = 0.013
Identities = 17/51 (33%), Positives = 27/51 (52%), Gaps = 1/51 (1%)
Query: 105 YYIAAYPYDSTEPGDLTFNQDEVIYVTKKEN-DWWTGTIGDRTGLFPSNYV 154
Y A + + + + +L F +VI V + N DWW G DR FP+++V
Sbjct: 2 YAEALWDHVTMDDQELAFKAGDVIRVLEASNKDWWWGRNEDREAWFPASFV 52
Score = 30.0 bits (67), Expect = 0.16
Identities = 15/57 (26%), Positives = 29/57 (50%), Gaps = 5/57 (8%)
Query: 221 ATVLAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVKV 277
A L + ++L+ G +I + + + WW G + + R+ WFPAS+V++
Sbjct: 3 AEALWDHVTMDDQELAFKAGDVIRVLEASNKDWWWG----RNEDRE-AWFPASFVRL 54
>gnl|CDD|212908 cd11975, SH3_ARHGEF9, Src homology 3 domain of the Rho guanine
nucleotide exchange factor ARHGEF9. ARHGEF9, also
called PEM2 or collybistin, selectively activates Cdc42
by exchanging bound GDP for free GTP. It is highly
expressed in the brain and it interacts with gephyrin,
a postsynaptic protein associated with GABA and glycine
receptors. Mutations in the ARHGEF9 gene cause X-linked
mental retardation with associated features like
seizures, hyper-anxiety, aggressive behavior, and
sensory hyperarousal. ARHGEF9 contains a SH3 domain
followed by RhoGEF (also called Dbl-homologous or DH)
and Pleckstrin Homology (PH) domains. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 62
Score = 35.5 bits (81), Expect = 0.002
Identities = 18/50 (36%), Positives = 30/50 (60%), Gaps = 2/50 (4%)
Query: 43 AIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYV 92
A+++ V+ EL+F+ GD+I V N + W G++ + GWFP S+V
Sbjct: 9 AVWDHVTMANRELAFKAGDVIKVLDASNKD--WWWGQIDDEEGWFPASFV 56
Score = 31.6 bits (71), Expect = 0.064
Identities = 16/37 (43%), Positives = 21/37 (56%), Gaps = 1/37 (2%)
Query: 119 DLTFNQDEVIYVTKKEN-DWWTGTIGDRTGLFPSNYV 154
+L F +VI V N DWW G I D G FP+++V
Sbjct: 20 ELAFKAGDVIKVLDASNKDWWWGQIDDEEGWFPASFV 56
Score = 30.4 bits (68), Expect = 0.17
Identities = 13/51 (25%), Positives = 27/51 (52%), Gaps = 5/51 (9%)
Query: 227 YTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVKV 277
+ ++ +L+ G +I + + WW G++ + GWFPAS+V++
Sbjct: 13 HVTMANRELAFKAGDVIKVLDASNKDWWWGQID-----DEEGWFPASFVRL 58
>gnl|CDD|212695 cd11761, SH3_FCHSD_1, First Src Homology 3 domain of FCH and
double SH3 domains proteins. This group is composed of
FCH and double SH3 domains protein 1 (FCHSD1) and
FCHSD2. These proteins have a common domain structure
consisting of an N-terminal F-BAR (FES-CIP4 Homology
and Bin/Amphiphysin/Rvs), two SH3, and C-terminal
proline-rich domains. They have only been characterized
in silico and their functions remain unknown. This
group also includes the insect protein, nervous wreck,
which acts as a regulator of synaptic growth signaling.
SH3 domains are protein interaction domains that bind
to proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 57
Score = 35.0 bits (81), Expect = 0.003
Identities = 13/52 (25%), Positives = 28/52 (53%), Gaps = 2/52 (3%)
Query: 43 AIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAG-ELRGQTGWFPESYVE 93
+Y + ++ DEL+ G+ + V ++ GW+ G+ G+ PE+Y++
Sbjct: 6 VLYSYEAQRPDELTITEGEELEV-IEDGDGDGWVKARNKSGEVGYVPENYLQ 56
Score = 34.3 bits (79), Expect = 0.006
Identities = 16/59 (27%), Positives = 31/59 (52%), Gaps = 5/59 (8%)
Query: 218 PEIATVLAPYTATSSEQLSLSRGQLI-MIRKKTTTGWWEGELQAKGKKRQVGWFPASYV 275
P VL Y A ++L+++ G+ + +I GW ++A+ K +VG+ P +Y+
Sbjct: 1 PVTCKVLYSYEAQRPDELTITEGEELEVIEDGDGDGW----VKARNKSGEVGYVPENYL 55
Score = 25.8 bits (57), Expect = 6.4
Identities = 12/48 (25%), Positives = 20/48 (41%), Gaps = 3/48 (6%)
Query: 110 YPYDSTEPGDLTFNQDEVIYVTKK--ENDWWTG-TIGDRTGLFPSNYV 154
Y Y++ P +LT + E + V + + W G P NY+
Sbjct: 8 YSYEAQRPDELTITEGEELEVIEDGDGDGWVKARNKSGEVGYVPENYL 55
>gnl|CDD|212863 cd11930, SH3_SH3RF1_2, Second Src Homology 3 domain of SH3 domain
containing ring finger protein 1, an E3
ubiquitin-protein ligase. SH3RF1 is also called POSH
(Plenty of SH3s) or SH3MD2 (SH3 multiple domains protein
2). It is a scaffold protein that acts as an E3
ubiquitin-protein ligase. It plays a role in calcium
homeostasis through the control of the ubiquitin domain
protein Herp. It may also have a role in regulating
death receptor mediated and JNK mediated apoptosis.
SH3RF1 also enhances the ubiquitination of ROMK1
potassium channel resulting in its increased
endocytosis. It contains an N-terminal RING finger
domain and four SH3 domains. This model represents the
second SH3 domain, located C-terminal of the first SH3
domain at the N-terminal half, of SH3RF1. SH3 domains
are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 55
Score = 35.0 bits (80), Expect = 0.003
Identities = 13/36 (36%), Positives = 25/36 (69%), Gaps = 1/36 (2%)
Query: 120 LTFNQDEVIYVTKK-ENDWWTGTIGDRTGLFPSNYV 154
L F +D+++ V ++ + +W G +GD+ G+FP +YV
Sbjct: 20 LPFAKDDILTVIRRVDENWAEGMLGDKIGIFPISYV 55
Score = 26.9 bits (59), Expect = 2.2
Identities = 18/55 (32%), Positives = 27/55 (49%), Gaps = 6/55 (10%)
Query: 42 RAIYEFVSRNG----DELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYV 92
+A+Y+F ++ D L F DI+ V + + W G L + G FP SYV
Sbjct: 3 KALYDFEVKDKEADKDCLPFAKDDILTV--IRRVDENWAEGMLGDKIGIFPISYV 55
>gnl|CDD|212938 cd12005, SH3_Lck, Src homology 3 domain of Lck Protein Tyrosine
Kinase. Lck is a member of the Src subfamily of
proteins, which are cytoplasmic (or non-receptor) PTKs.
Lck is expressed in T-cells and natural killer cells. It
plays a critical role in T-cell maturation, activation,
and T-cell receptor (TCR) signaling. Lck phosphorylates
ITAM (immunoreceptor tyr activation motif) sequences on
several subunits of TCRs, leading to the activation of
different second messenger cascades. Phosphorylated
ITAMs serve as binding sites for other signaling factor
such as Syk and ZAP-70, leading to their activation and
propagation of downstream events. In addition, Lck
regulates drug-induced apoptosis by interfering with the
mitochondrial death pathway. The apototic role of Lck is
independent of its primary function in T-cell signaling.
Src kinases contain an N-terminal SH4 domain with a
myristoylation site, followed by SH3 and SH2 domains, a
tyr kinase domain, and a regulatory C-terminal region
containing a conserved tyr. They are activated by
autophosphorylation at the tyr kinase domain, but are
negatively regulated by phosphorylation at the
C-terminal tyr by Csk (C-terminal Src Kinase). The SH3
domain of Src kinases contributes to substrate
recruitment by binding adaptor proteins/substrates, and
regulation of kinase activity through an intramolecular
interaction. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate affinity
and selectivity, preferentially to PxxP motifs. They
play versatile and diverse roles in the cell including
the regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 54
Score = 34.8 bits (80), Expect = 0.003
Identities = 16/51 (31%), Positives = 26/51 (50%), Gaps = 4/51 (7%)
Query: 107 IAAYPYDSTEPGDLTFNQDEVIYVTKKENDWWTG---TIGDRTGLFPSNYV 154
+A Y Y+ + GDL F + E + + ++ +WW T G G P N+V
Sbjct: 3 VALYSYEPSHDGDLGFEKGEKLRILEQSGEWWKAQSLTTGQE-GFIPFNFV 52
>gnl|CDD|212734 cd11800, SH3_DNMBP_C2_like, Second C-terminal Src homology 3
domain of Dynamin Binding Protein, also called Tuba,
and similar domains. DNMBP or Tuba is a cdc42-specific
guanine nucleotide exchange factor (GEF) that contains
four N-terminal SH3 domains, a central RhoGEF [or Dbl
homology (DH)] domain followed by a Bin/Amphiphysin/Rvs
(BAR) domain, and two C-terminal SH3 domains. It
provides a functional link between dynamin, Rho GTPase
signaling, and actin dynamics. It plays an important
role in regulating cell junction configuration. The
C-terminal SH3 domains of DNMBP bind to N-WASP and
Ena/VASP proteins, which are key regulatory proteins of
the actin cytoskeleton. Also included in this subfamily
is the second C-terminal SH3 domain of Rho guanine
nucleotide exchange factor 37 (ARHGEF37), whose
function is still unknown. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles
in the cell including the regulation of enzymes,
changing the subcellular localization of signaling
pathway components, and mediating the formation of
multiprotein complex assemblies.
Length = 57
Score = 35.0 bits (81), Expect = 0.003
Identities = 19/56 (33%), Positives = 30/56 (53%), Gaps = 2/56 (3%)
Query: 41 YRAIYEFVSRNGDELSFQPGDIIMVPVKQNAE--PGWLAGELRGQTGWFPESYVEP 94
Y A+Y F +R+ ELS G ++ V K + + P W E RG+ G+ P +Y+
Sbjct: 2 YYALYTFEARSPGELSVTEGQVVTVLEKHDLKGNPEWWLVEDRGKQGYVPSNYLAK 57
Score = 32.7 bits (75), Expect = 0.017
Identities = 17/54 (31%), Positives = 27/54 (50%), Gaps = 5/54 (9%)
Query: 105 YYIAAYPYDSTEPGDLTFNQDEVIYV-----TKKENDWWTGTIGDRTGLFPSNY 153
YY A Y +++ PG+L+ + +V+ V K +WW + G PSNY
Sbjct: 1 YYYALYTFEARSPGELSVTEGQVVTVLEKHDLKGNPEWWLVEDRGKQGYVPSNY 54
Score = 28.9 bits (65), Expect = 0.50
Identities = 15/53 (28%), Positives = 30/53 (56%), Gaps = 9/53 (16%)
Query: 226 PYTATSSEQLSLSRGQLI-MIRKKTTTG---WWEGELQAKGKKRQVGWFPASY 274
+ A S +LS++ GQ++ ++ K G WW ++ +GK+ G+ P++Y
Sbjct: 7 TFEARSPGELSVTEGQVVTVLEKHDLKGNPEWW--LVEDRGKQ---GYVPSNY 54
>gnl|CDD|212878 cd11945, SH3_Endophilin_B1, Src homology 3 domain of
Endophilin-B1. Endophilin-B1, also called
Bax-interacting factor 1 (Bif-1) or SH3GLB1 (SH3-domain
GRB2-like endophilin B1), is localized mainly to the
Golgi apparatus. It is involved in the regulation of
many biological events including autophagy,
tumorigenesis, nerve growth factor (NGF) trafficking,
neurite outgrowth, mitochondrial outer membrane
dynamics, and cell death. Endophilins play roles in
synaptic vesicle formation, virus budding,
mitochondrial morphology maintenance, receptor-mediated
endocytosis inhibition, and endosomal sorting. They
contain an N-terminal N-BAR domain (BAR domain with an
additional N-terminal amphipathic helix), followed by a
variable region containing proline clusters, and a
C-terminal SH3 domain. Endophilin-B1 forms homo- and
heterodimers (with endophilin-B2) through its BAR
domain. It interacts with amphiphysin 1 and dynamin 1
through its SH3 domain. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles
in the cell including the regulation of enzymes,
changing the subcellular localization of signaling
pathway components, and mediating the formation of
multiprotein complex assemblies.
Length = 61
Score = 35.0 bits (80), Expect = 0.003
Identities = 19/58 (32%), Positives = 29/58 (50%)
Query: 36 SEYRRYRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVE 93
S R+ R +Y++ + N ELS ++I V + WL GE Q G P +Y+E
Sbjct: 1 SGSRKARVLYDYDAANSTELSLLADEVITVYSVPGMDSDWLMGERGNQKGKVPITYLE 58
Score = 30.0 bits (67), Expect = 0.23
Identities = 16/48 (33%), Positives = 24/48 (50%), Gaps = 3/48 (6%)
Query: 110 YPYDSTEPGDLTFNQDEVIYVTK---KENDWWTGTIGDRTGLFPSNYV 154
Y YD+ +L+ DEVI V ++DW G G++ G P Y+
Sbjct: 10 YDYDAANSTELSLLADEVITVYSVPGMDSDWLMGERGNQKGKVPITYL 57
>gnl|CDD|212950 cd12017, SH3_Tks_3, Third Src homology 3 domain of Tyrosine kinase
substrate (Tks) proteins. Tks proteins are Src
substrates and scaffolding proteins that play important
roles in the formation of podosomes and invadopodia, the
dynamic actin-rich structures that are related to cell
migration and cancer cell invasion. Vertebrates contain
two Tks proteins, Tks4 (Tyr kinase substrate with four
SH3 domains) and Tks5 (Tyr kinase substrate with five
SH3 domains), which display partially overlapping but
non-redundant functions. Both associate with the ADAMs
family of transmembrane metalloproteases, which function
as sheddases and mediators of cell and matrix
interactions. Tks5 interacts with N-WASP and Nck, while
Tks4 is essential for the localization of MT1-MMP
(membrane-type 1 matrix metalloproteinase) to
invadopodia. Tks proteins contain an N-terminal Phox
homology (PX) domain and four or five SH3 domains. This
model characterizes the third SH3 domain of Tks
proteins. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate affinity
and selectivity, preferentially to PxxP motifs. They
play versatile and diverse roles in the cell including
the regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 53
Score = 34.7 bits (80), Expect = 0.003
Identities = 15/52 (28%), Positives = 27/52 (51%), Gaps = 5/52 (9%)
Query: 224 LAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYV 275
+ + AT + +S +GQ + + K +GWW ++ K GW P+SY+
Sbjct: 5 IGEFQATIQDGISFQKGQKVEVIDKNPSGWWYVKIDGKE-----GWAPSSYI 51
Score = 33.2 bits (76), Expect = 0.012
Identities = 20/53 (37%), Positives = 28/53 (52%), Gaps = 2/53 (3%)
Query: 41 YRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVE 93
Y I EF + D +SFQ G + V K + GW ++ G+ GW P SY+E
Sbjct: 2 YFTIGEFQATIQDGISFQKGQKVEVIDKNPS--GWWYVKIDGKEGWAPSSYIE 52
Score = 27.4 bits (61), Expect = 1.4
Identities = 13/52 (25%), Positives = 25/52 (48%), Gaps = 2/52 (3%)
Query: 104 EYYIAAYPYDSTEPGDLTFNQ-DEVIYVTKKENDWWTGTIGDRTGLFPSNYV 154
EY+ + +T ++F + +V + K + WW I + G PS+Y+
Sbjct: 1 EYFTIG-EFQATIQDGISFQKGQKVEVIDKNPSGWWYVKIDGKEGWAPSSYI 51
>gnl|CDD|212709 cd11775, SH3_Sla1p_3, Third Src Homology 3 domain of the fungal
endocytic adaptor protein Sla1p. Sla1p facilitates
endocytosis by playing a role as an adaptor protein in
coupling components of the actin cytoskeleton to the
endocytic machinery. It interacts with Abp1p, Las17p and
Pan1p, which are activator proteins of actin-related
protein 2/3 (Arp2/3). Sla1p contains multiple domains
including three SH3 domains, a SAM (sterile alpha motif)
domain, and a Sla1 homology domain 1 (SHD1), which binds
to the NPFXD motif that is found in many integral
membrane proteins such as the Golgi-localized
Arf-binding protein Lsb5p and the P4-ATPases, Drs2p and
Dnf1p. The third SH3 domain of Sla1p can bind ubiquitin
while retaining the ability to bind proline-rich
ligands; monoubiquitination of target proteins signals
internalization and sorting through the endocytic
pathway. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate affinity
and selectivity, preferentially to PxxP motifs. They
play versatile and diverse roles in the cell including
the regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 57
Score = 34.6 bits (80), Expect = 0.004
Identities = 17/60 (28%), Positives = 32/60 (53%), Gaps = 4/60 (6%)
Query: 219 EIATVLAPYTATSSEQLSLSRGQ-LIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVKV 277
+ VL + A S ++L++ G + ++ K + WW E + GK+ G PASY+++
Sbjct: 1 KRGKVLYDFDAQSDDELTVKEGDVVYILDDKKSKDWWMVENVSTGKE---GVVPASYIEI 57
Score = 28.1 bits (63), Expect = 0.82
Identities = 14/54 (25%), Positives = 32/54 (59%), Gaps = 1/54 (1%)
Query: 42 RAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGEL-RGQTGWFPESYVEP 94
+ +Y+F +++ DEL+ + GD++ + + ++ W+ + G+ G P SY+E
Sbjct: 4 KVLYDFDAQSDDELTVKEGDVVYILDDKKSKDWWMVENVSTGKEGVVPASYIEI 57
>gnl|CDD|213015 cd12139, SH3_Bin1, Src Homology 3 domain of Bridging integrator 1
(Bin1), also called Amphiphysin-2. Bin1 isoforms are
localized in many different tissues and may function in
intracellular vesicle trafficking. It plays a role in
the organization and maintenance of the T-tubule
network in skeletal muscle. Mutations in Bin1 are
associated with autosomal recessive centronuclear
myopathy. Bin1 contains an N-terminal BAR domain with
an additional N-terminal amphipathic helix (an N-BAR)
and a C-terminal SH3 domain. The SH3 domain of Bin1
forms transient complexes with actin, myosin filaments,
and CDK5, to facilitate sarcomere organization and
myofiber maturation. It also binds dynamin and prevents
its self-assembly. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP
motifs. They play versatile and diverse roles in the
cell including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 72
Score = 35.3 bits (81), Expect = 0.004
Identities = 19/67 (28%), Positives = 34/67 (50%), Gaps = 13/67 (19%)
Query: 40 RYRAIYEFVSRNGDELSFQPGDIIMVPVKQN---AEPGWLAG----------ELRGQTGW 86
+ +A +++ + + DEL + GD+++V QN + GWL G +L G
Sbjct: 4 KVQAQHDYTATDTDELQLKAGDVVLVIPFQNPEEQDEGWLMGVKESDWNQHKKLEKCRGV 63
Query: 87 FPESYVE 93
FPE++ E
Sbjct: 64 FPENFTE 70
>gnl|CDD|212859 cd11926, SH3_SH3RF1_3, Third Src Homology 3 domain of SH3 domain
containing ring finger 1, an E3 ubiquitin-protein
ligase. SH3RF1 is also called POSH (Plenty of SH3s) or
SH3MD2 (SH3 multiple domains protein 2). It is a
scaffold protein that acts as an E3 ubiquitin-protein
ligase. It plays a role in calcium homeostasis through
the control of the ubiquitin domain protein Herp. It may
also have a role in regulating death receptor mediated
and JNK mediated apoptosis. SH3RF1 also enhances the
ubiquitination of ROMK1 potassium channel resulting in
its increased endocytosis. It contains an N-terminal
RING finger domain and four SH3 domains. This model
represents the third SH3 domain, located in the middle,
of SH3RF1. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate affinity
and selectivity, preferentially to PxxP motifs. They
play versatile and diverse roles in the cell including
the regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 55
Score = 34.6 bits (79), Expect = 0.004
Identities = 18/54 (33%), Positives = 27/54 (50%), Gaps = 3/54 (5%)
Query: 106 YIAAYPYDSTEPGDLTFNQDEVIYVTKKENDWW---TGTIGDRTGLFPSNYVVP 156
Y+A YPY + +L + E+ V ++ D W T + G+FP NYV P
Sbjct: 2 YVAIYPYTPRKEDELELRKGEMFLVFERCQDGWFKGTSMHTSKIGVFPGNYVAP 55
Score = 34.6 bits (79), Expect = 0.004
Identities = 15/50 (30%), Positives = 28/50 (56%), Gaps = 3/50 (6%)
Query: 226 PYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYV 275
PYT ++L L +G++ ++ ++ GW++G K +G FP +YV
Sbjct: 7 PYTPRKEDELELRKGEMFLVFERCQDGWFKGTSMHTSK---IGVFPGNYV 53
Score = 33.8 bits (77), Expect = 0.008
Identities = 19/56 (33%), Positives = 28/56 (50%), Gaps = 4/56 (7%)
Query: 41 YRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGEL--RGQTGWFPESYVEP 94
Y AIY + R DEL + G++ + V + + GW G + G FP +YV P
Sbjct: 2 YVAIYPYTPRKEDELELRKGEMFL--VFERCQDGWFKGTSMHTSKIGVFPGNYVAP 55
>gnl|CDD|212736 cd11802, SH3_Endophilin_B, Src homology 3 domain of Endophilin-B.
Endophilins play roles in synaptic vesicle formation,
virus budding, mitochondrial morphology maintenance,
receptor-mediated endocytosis inhibition, and endosomal
sorting. They are classified into two types, A and B.
Vertebrates contain two endophilin-B isoforms.
Endophilin-B proteins are cytoplasmic proteins expressed
mainly in the heart, placenta, and skeletal muscle.
Endophilins contain an N-terminal N-BAR domain (BAR
domain with an additional N-terminal amphipathic helix),
followed by a variable region containing proline
clusters, and a C-terminal SH3 domain. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 52
Score = 34.6 bits (80), Expect = 0.004
Identities = 15/47 (31%), Positives = 23/47 (48%), Gaps = 3/47 (6%)
Query: 110 YPYDSTEPGDLTFNQDEVIYVTK---KENDWWTGTIGDRTGLFPSNY 153
Y YD+ + +L+ DEVI V + + D+ G G + G P Y
Sbjct: 6 YDYDAEDSTELSLLADEVITVYELPGMDEDYMMGERGSQRGKVPVAY 52
Score = 29.9 bits (68), Expect = 0.15
Identities = 13/52 (25%), Positives = 25/52 (48%)
Query: 40 RYRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESY 91
+ R +Y++ + + ELS ++I V + ++ GE Q G P +Y
Sbjct: 1 KARVLYDYDAEDSTELSLLADEVITVYELPGMDEDYMMGERGSQRGKVPVAY 52
Score = 28.0 bits (63), Expect = 0.86
Identities = 17/56 (30%), Positives = 25/56 (44%), Gaps = 7/56 (12%)
Query: 221 ATVLAPYTATSSEQLSLSRGQLIMIR--KKTTTGWWEGELQAKGKKRQVGWFPASY 274
A VL Y A S +LSL ++I + + GE +G +R G P +Y
Sbjct: 2 ARVLYDYDAEDSTELSLLADEVITVYELPGMDEDYMMGE---RGSQR--GKVPVAY 52
>gnl|CDD|212940 cd12007, SH3_Yes, Src homology 3 domain of Yes Protein Tyrosine
Kinase. Yes (or c-Yes) is a member of the Src subfamily
of proteins, which are cytoplasmic (or non-receptor)
PTKs. c-Yes kinase is the cellular homolog of the
oncogenic protein (v-Yes) encoded by the Yamaguchi 73
and Esh sarcoma viruses. It displays functional overlap
with other Src subfamily members, particularly Src. It
also shows some unique functions such as binding to
occludins, transmembrane proteins that regulate
extracellular interactions in tight junctions. Yes also
associates with a number of proteins in different cell
types that Src does not interact with, like JAK2 and
gp130 in pre-adipocytes, and Pyk2 in treated pulmonary
vein endothelial cells. Although the biological function
of Yes remains unclear, it appears to have a role in
regulating cell-cell interactions and vesicle
trafficking in polarized cells. Src kinases contain an
N-terminal SH4 domain with a myristoylation site,
followed by SH3 and SH2 domains, a tyr kinase domain,
and a regulatory C-terminal region containing a
conserved tyr. They are activated by autophosphorylation
at the tyr kinase domain, but are negatively regulated
by phosphorylation at the C-terminal tyr by Csk
(C-terminal Src Kinase). The SH3 domain of Src kinases
contributes to substrate recruitment by binding adaptor
proteins/substrates, and regulation of kinase activity
through an intramolecular interaction. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 58
Score = 34.6 bits (79), Expect = 0.004
Identities = 18/55 (32%), Positives = 26/55 (47%), Gaps = 3/55 (5%)
Query: 105 YYIAAYPYDSTEPGDLTFNQDEVI-YVTKKENDWWTG--TIGDRTGLFPSNYVVP 156
++A Y Y++ DL+F + E + E DWW + G PSNYV P
Sbjct: 2 IFVALYDYEARTTEDLSFKKGERFQIINNTEGDWWEARSIATGKNGYIPSNYVAP 56
Score = 33.1 bits (75), Expect = 0.014
Identities = 17/58 (29%), Positives = 30/58 (51%), Gaps = 4/58 (6%)
Query: 41 YRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGE--LRGQTGWFPESYVEPCD 96
+ A+Y++ +R ++LSF+ G+ + N E W G+ G+ P +YV P D
Sbjct: 3 FVALYDYEARTTEDLSFKKGE--RFQIINNTEGDWWEARSIATGKNGYIPSNYVAPAD 58
Score = 32.7 bits (74), Expect = 0.021
Identities = 19/52 (36%), Positives = 26/52 (50%), Gaps = 3/52 (5%)
Query: 224 LAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYV 275
L Y A ++E LS +G+ I T WWE A GK G+ P++YV
Sbjct: 6 LYDYEARTTEDLSFKKGERFQIINNTEGDWWEARSIATGKN---GYIPSNYV 54
>gnl|CDD|212857 cd11924, SH3_Vinexin_2, Second Src Homology 3 domain of Vinexin,
also called Sorbin and SH3 domain containing 3 (Sorbs3).
Vinexin is also called Sorbs3, SH3P3, and
SH3-containing adapter molecule 1 (SCAM-1). It is an
adaptor protein containing one sorbin homology (SoHo)
and three SH3 domains. Vinexin was first identified as a
vinculin binding protein; it is co-localized with
vinculin at cell-ECM and cell-cell adhesion sites. There
are several splice variants of vinexin: alpha, which
contains the SoHo and three SH3 domains and displays
tissue-specific expression; and beta, which contains
only the three SH3 domains and is widely expressed.
Vinexin alpha stimulates the accumulation of F-actin at
focal contact sites. Vinexin also promotes keratinocyte
migration and wound healing. The SH3 domains of vinexin
have been reported to bind a number of ligands including
vinculin, WAVE2, DLG5, Abl, and Cbl. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 56
Score = 34.6 bits (79), Expect = 0.005
Identities = 17/44 (38%), Positives = 27/44 (61%), Gaps = 3/44 (6%)
Query: 234 QLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVKV 277
+LS +G+ I + +K W+EG + G++ G FPASYV+V
Sbjct: 16 ELSFRKGEHICLIRKVNENWYEGRITGTGRQ---GIFPASYVQV 56
Score = 32.6 bits (74), Expect = 0.022
Identities = 17/51 (33%), Positives = 29/51 (56%), Gaps = 3/51 (5%)
Query: 107 IAAYPYDSTEPGDLTFNQDEVIYVTKKEND-WWTGTIG--DRTGLFPSNYV 154
+A Y + +L+F + E I + +K N+ W+ G I R G+FP++YV
Sbjct: 4 VAQYTFKGDLEVELSFRKGEHICLIRKVNENWYEGRITGTGRQGIFPASYV 54
>gnl|CDD|212933 cd12000, SH3_CASS4, Src homology 3 domain of CAS (Crk-Associated
Substrate) scaffolding protein family member 4. CASS4,
also called HEPL (HEF1-EFS-p130Cas-like), localizes to
focal adhesions and plays a role in regulating FAK
activity, focal adhesion integrity, and cell spreading.
It is most abundant in blood cells and lung tissue, and
is also found in high levels in leukemia and ovarian
cell lines. CAS proteins function as molecular
scaffolds to regulate protein complexes that are
involved in many cellular processes. They share a
common domain structure that includes an N-terminal SH3
domain, an unstructured substrate domain that contains
many YxxP motifs, a serine-rich four-helix bundle, and
a FAT-like C-terminal domain. The SH3 domain of CAS
proteins binds to diverse partners including FAK, FRNK,
Pyk2, PTP-PEST, DOCK180, among others. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 57
Score = 34.5 bits (79), Expect = 0.005
Identities = 19/55 (34%), Positives = 31/55 (56%), Gaps = 3/55 (5%)
Query: 42 RAIYEFVSRNGDELSFQPGDIIMVPVKQN--AEPGWLAGELRGQTGWFPESYVEP 94
RA+Y+ + DEL+F+ GDI+ V ++QN GW L G+ G P + ++
Sbjct: 4 RALYDNKADCSDELAFRRGDILTV-LEQNVPGSEGWWKCLLHGRQGLAPANRLQL 57
>gnl|CDD|212822 cd11889, SH3_Cyk3p-like, Src Homology 3 domain of Cytokinesis
protein 3 and similar proteins. Cytokinesis protein 3
(Cyk3 or Cyk3p) is a component of the actomyosin ring
independent cytokinesis pathway in yeast. It interacts
with Inn1 and facilitates its recruitment to the bud
neck, thereby promoting cytokinesis. Cyk3p contains an
N-terminal SH3 domain and a C-terminal
transglutaminase-like domain. The Cyk3p SH3 domain binds
to the C-terminal proline-rich region of Inn1. SH3
domains bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP motifs;
they play a role in the regulation of enzymes by
intramolecular interactions, changing the subcellular
localization of signal pathway components and mediate
multiprotein complex assemblies.
Length = 53
Score = 34.0 bits (78), Expect = 0.006
Identities = 17/50 (34%), Positives = 26/50 (52%), Gaps = 3/50 (6%)
Query: 108 AAYPYDSTEPGDLTFNQDEVIYVTKKEND-WWTGT-IGDRT-GLFPSNYV 154
A Y + GDL F + ++I V + WW+G + G+FPSN+V
Sbjct: 4 AVYSWAGETEGDLGFLEGDLIEVLSIGDGSWWSGKLRRNGAEGIFPSNFV 53
>gnl|CDD|212858 cd11925, SH3_SH3RF3_3, Third Src Homology 3 domain of SH3 domain
containing ring finger 3, an E3 ubiquitin-protein
ligase. SH3RF3 is also called POSH2 (Plenty of SH3s 2)
or SH3MD4 (SH3 multiple domains protein 4). It is a
scaffold protein with E3 ubiquitin-protein ligase
activity. It was identified in the screen for
interacting partners of p21-activated kinase 2 (PAK2).
It may play a role in regulating JNK mediated apoptosis
in certain conditions. It also interacts with GTP-loaded
Rac1. SH3RF3 is highly homologous to SH3RF1; it also
contains an N-terminal RING finger domain and four SH3
domains. This model represents the third SH3 domain,
located in the middle, of SH3RF3. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 57
Score = 34.2 bits (78), Expect = 0.006
Identities = 19/54 (35%), Positives = 26/54 (48%), Gaps = 3/54 (5%)
Query: 106 YIAAYPYDSTEPGDLTFNQDEVIYVTKKENDWWTGTIGDRT---GLFPSNYVVP 156
Y+A Y Y + +L + E+ V +K D W RT G+FP NYV P
Sbjct: 3 YLALYAYKPQKNDELELRKGEMYRVIEKCQDGWFKGTSLRTGVSGVFPGNYVTP 56
Score = 33.4 bits (76), Expect = 0.011
Identities = 21/56 (37%), Positives = 30/56 (53%), Gaps = 4/56 (7%)
Query: 41 YRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAG-ELR-GQTGWFPESYVEP 94
Y A+Y + + DEL + G+ M V + + GW G LR G +G FP +YV P
Sbjct: 3 YLALYAYKPQKNDELELRKGE--MYRVIEKCQDGWFKGTSLRTGVSGVFPGNYVTP 56
Score = 28.4 bits (63), Expect = 0.71
Identities = 16/56 (28%), Positives = 27/56 (48%), Gaps = 3/56 (5%)
Query: 220 IATVLAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYV 275
I L Y +++L L +G++ + +K GW++G G G FP +YV
Sbjct: 2 IYLALYAYKPQKNDELELRKGEMYRVIEKCQDGWFKGTSLRTGVS---GVFPGNYV 54
>gnl|CDD|212780 cd11846, SH3_Srms, Src homology 3 domain of Srms Protein Tyrosine
Kinase. Src-related kinase lacking C-terminal
regulatory tyrosine and N-terminal myristoylation sites
(Srms) is a cytoplasmic (or non-receptor) PTK with
limited homology to Src kinases. Src kinases in general
contain an N-terminal SH4 domain with a myristoylation
site, followed by SH3 and SH2 domains, a tyr kinase
domain, and a regulatory C-terminal region containing a
conserved tyr; they are activated by
autophosphorylation at the tyr kinase domain, but are
negatively regulated by phosphorylation at the
C-terminal tyr by Csk (C-terminal Src Kinase). However,
Srms lacks the N-terminal myristoylation sites. Src
proteins are involved in signaling pathways that
regulate cytokine and growth factor responses,
cytoskeleton dynamics, cell proliferation, survival,
and differentiation. The SH3 domain of Src kinases
contributes to substrate recruitment by binding adaptor
proteins/substrates, and regulation of kinase activity
through an intramolecular interaction. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 55
Score = 34.0 bits (78), Expect = 0.006
Identities = 19/56 (33%), Positives = 30/56 (53%), Gaps = 6/56 (10%)
Query: 40 RYRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGW-LAGELRGQ--TGWFPESYV 92
+ A+Y+F +R+ ELS + GD + V + E + A +L G +G P SYV
Sbjct: 1 LFTALYDFTARSTHELSVEQGDKLCVIEE---EGDYIFARKLTGNPESGLVPASYV 53
>gnl|CDD|212934 cd12001, SH3_BCAR1, Src homology 3 domain of the CAS
(Crk-Associated Substrate) scaffolding protein family
member, Breast Cancer Anti-estrogen Resistance 1.
BCAR1, also called p130cas or CASS1, is the founding
member of the CAS family of scaffolding proteins and
was originally identified through its ability to
associate with Crk. The name BCAR1 was designated
because the human gene was identified in a screen for
genes that promote resistance to tamoxifen. It is
widely expressed and its deletion is lethal in mice. It
plays a role in regulating cell motility, survival,
proliferation, transformation, cancer progression, and
bacterial pathogenesis. CAS proteins function as
molecular scaffolds to regulate protein complexes that
are involved in many cellular processes. They share a
common domain structure that includes an N-terminal SH3
domain, an unstructured substrate domain that contains
many YxxP motifs, a serine-rich four-helix bundle, and
a FAT-like C-terminal domain. The SH3 domain of CAS
proteins binds to diverse partners including FAK, FRNK,
Pyk2, PTP-PEST, DOCK180, among others. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 68
Score = 34.2 bits (78), Expect = 0.007
Identities = 18/49 (36%), Positives = 31/49 (63%), Gaps = 3/49 (6%)
Query: 42 RAIYEFVSRNGDELSFQPGDIIMVPVKQNAE--PGWLAGELRGQTGWFP 88
+A+Y+ V+ + DELSF+ GDI+ V ++++ + GW L G+ G P
Sbjct: 6 KALYDNVAESPDELSFRKGDIMTV-LERDTQGLDGWWLCSLHGRQGIVP 53
Score = 27.3 bits (60), Expect = 2.0
Identities = 12/49 (24%), Positives = 26/49 (53%), Gaps = 4/49 (8%)
Query: 108 AAYPYDSTEPGDLTFNQDEVIYVTKKE----NDWWTGTIGDRTGLFPSN 152
A Y + P +L+F + +++ V +++ + WW ++ R G+ P N
Sbjct: 7 ALYDNVAESPDELSFRKGDIMTVLERDTQGLDGWWLCSLHGRQGIVPGN 55
Score = 25.8 bits (56), Expect = 7.7
Identities = 18/64 (28%), Positives = 31/64 (48%), Gaps = 8/64 (12%)
Query: 220 IATVLAPYTATSSEQLSLSRGQLIMIRKKTTT---GWWEGELQAKGKKRQVGWFPASYVK 276
+A L A S ++LS +G ++ + ++ T GWW L RQ G P + +K
Sbjct: 4 LAKALYDNVAESPDELSFRKGDIMTVLERDTQGLDGWWLCSLHG----RQ-GIVPGNRLK 58
Query: 277 VMGG 280
++ G
Sbjct: 59 ILVG 62
>gnl|CDD|212710 cd11776, SH3_PI3K_p85, Src Homology 3 domain of the p85
regulatory subunit of Class IA Phosphatidylinositol
3-kinases. Class I PI3Ks convert PtdIns(4,5)P2 to the
critical second messenger PtdIns(3,4,5)P3. They are
heterodimers and exist in multiple isoforms consisting
of one catalytic subunit (out of four isoforms) and one
of several regulatory subunits. Class IA PI3Ks
associate with the p85 regulatory subunit family, which
contains SH3, RhoGAP, and SH2 domains. The p85 subunits
recruit the PI3K p110 catalytic subunit to the
membrane, where p110 phosphorylates inositol lipids.
Vertebrates harbor two p85 isoforms, called alpha and
beta. SH3 domains are protein interaction domains that
bind to proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 72
Score = 34.4 bits (79), Expect = 0.007
Identities = 21/69 (30%), Positives = 35/69 (50%), Gaps = 15/69 (21%)
Query: 40 RYRAIYEFVSRNGDELSFQPGDIIMV----------PVKQNAEP---GWLAG--ELRGQT 84
+YRA+Y++ +++ + GD+++V P + P GWL G E G+
Sbjct: 2 QYRALYDYEKERDEDIILKTGDVLVVENPELLALGVPDGKETVPKPEGWLEGKNERTGER 61
Query: 85 GWFPESYVE 93
G FP +YVE
Sbjct: 62 GDFPGTYVE 70
>gnl|CDD|212693 cd11759, SH3_CRK_C, C-terminal Src Homology 3 domain of Ct10
Regulator of Kinase adaptor proteins. CRK adaptor
proteins consists of SH2 and SH3 domains, which bind
tyrosine-phosphorylated peptides and proline-rich
motifs, respectively. They function downstream of
protein tyrosine kinases in many signaling pathways
started by various extracellular signals, including
growth and differentiation factors. Cellular CRK (c-CRK)
contains a single SH2 domain, followed by N-terminal and
C-terminal SH3 domains. It is involved in the regulation
of many cellular processes including cell growth,
motility, adhesion, and apoptosis. CRK has been
implicated in the malignancy of various human cancers.
The C-terminal SH3 domain of CRK has not been shown to
bind any target protein; it acts as a negative regulator
of CRK function by stabilizing a structure that inhibits
the access by target proteins to the N-terminal SH3
domain. SH3 domains are protein interaction domains that
bind to proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes by intramolecular interactions,
changing the subcellular localization of signal pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 57
Score = 34.0 bits (78), Expect = 0.008
Identities = 18/49 (36%), Positives = 26/49 (53%), Gaps = 5/49 (10%)
Query: 229 ATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVKV 277
A L+L G L+ + K +G WEGEL K VG FP ++V++
Sbjct: 14 AYDKTALALEVGDLVKVTKINVSGQWEGELNGK-----VGHFPFTHVEL 57
Score = 30.1 bits (68), Expect = 0.16
Identities = 16/39 (41%), Positives = 23/39 (58%), Gaps = 2/39 (5%)
Query: 55 LSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVE 93
L+ + GD++ V K N W GEL G+ G FP ++VE
Sbjct: 20 LALEVGDLVKV-TKINVSGQW-EGELNGKVGHFPFTHVE 56
>gnl|CDD|212828 cd11895, SH3_FCHSD1_2, Second Src Homology 3 domain of FCH and
double SH3 domains protein 1. FCHSD1 has a domain
structure consisting of an N-terminal F-BAR (FES-CIP4
Homology and Bin/Amphiphysin/Rvs), two SH3, and
C-terminal proline-rich domains. It has only been
characterized in silico and its function is unknown.
SH3 domains are protein interaction domains that bind
to proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 58
Score = 33.8 bits (77), Expect = 0.008
Identities = 20/54 (37%), Positives = 32/54 (59%), Gaps = 2/54 (3%)
Query: 42 RAIYEFVSRNGDELSFQPGDII-MVPVKQN-AEPGWLAGELRGQTGWFPESYVE 93
RA+Y + ++ +ELSF G +I ++P Q+ + G+ GE G+ G FP VE
Sbjct: 3 RALYSYTGQSPEELSFPEGALIRLLPRAQDGVDDGFWRGEFGGRVGVFPSLLVE 56
Score = 33.4 bits (76), Expect = 0.013
Identities = 16/49 (32%), Positives = 24/49 (48%), Gaps = 5/49 (10%)
Query: 108 AAYPYDSTEPGDLTFNQDEVIYVTKKEND-----WWTGTIGDRTGLFPS 151
A Y Y P +L+F + +I + + D +W G G R G+FPS
Sbjct: 4 ALYSYTGQSPEELSFPEGALIRLLPRAQDGVDDGFWRGEFGGRVGVFPS 52
Score = 27.6 bits (61), Expect = 1.2
Identities = 20/61 (32%), Positives = 28/61 (45%), Gaps = 9/61 (14%)
Query: 220 IATVLAPYTATSSEQLSLSRGQLIMI----RKKTTTGWWEGELQAKGKKRQVGWFPASYV 275
+A L YT S E+LS G LI + + G+W GE + VG FP+ V
Sbjct: 1 LARALYSYTGQSPEELSFPEGALIRLLPRAQDGVDDGFWRGEFGGR-----VGVFPSLLV 55
Query: 276 K 276
+
Sbjct: 56 E 56
>gnl|CDD|212742 cd11808, SH3_Alpha_Spectrin, Src homology 3 domain of Alpha
Spectrin. Spectrin is a major structural component of
the red blood cell membrane skeleton and is important in
erythropoiesis and membrane biogenesis. It is a
flexible, rope-like molecule composed of two subunits,
alpha and beta, which consist of many spectrin-type
repeats. Alpha and beta spectrin associate to form
heterodimers and tetramers; spectrin tetramer formation
is critical for red cell shape and deformability.
Defects in alpha spectrin have been associated with
inherited hemolytic anemias including hereditary
spherocytosis (HSp), hereditary elliptocytosis (HE), and
hereditary pyropoikilocytosis (HPP). Alpha spectrin
contains a middle SH3 domain and a C-terminal EF-hand
binding motif in addition to multiple spectrin repeats.
SH3 domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 53
Score = 33.6 bits (77), Expect = 0.009
Identities = 14/51 (27%), Positives = 25/51 (49%), Gaps = 1/51 (1%)
Query: 105 YYIAAYPYDSTEPGDLTFNQDEVIYVTKKEN-DWWTGTIGDRTGLFPSNYV 154
+A Y Y P +++ + +++ + N DWW + DR G P+ YV
Sbjct: 1 CVVALYDYQEKSPREVSMKKGDILTLLNSSNKDWWKVEVNDRQGFVPAAYV 51
Score = 30.5 bits (69), Expect = 0.10
Identities = 16/54 (29%), Positives = 28/54 (51%), Gaps = 5/54 (9%)
Query: 223 VLAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVK 276
L Y S ++S+ +G ++ + + WW+ E+ RQ G+ PA+YVK
Sbjct: 4 ALYDYQEKSPREVSMKKGDILTLLNSSNKDWWKVEVN----DRQ-GFVPAAYVK 52
Score = 29.0 bits (65), Expect = 0.42
Identities = 14/51 (27%), Positives = 29/51 (56%), Gaps = 2/51 (3%)
Query: 43 AIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVE 93
A+Y++ ++ E+S + GDI+ + N + W E+ + G+ P +YV+
Sbjct: 4 ALYDYQEKSPREVSMKKGDILTLLNSSNKD--WWKVEVNDRQGFVPAAYVK 52
>gnl|CDD|212729 cd11795, SH3_DNMBP_N2, Second N-terminal Src homology 3 domain of
Dynamin Binding Protein, also called Tuba. DNMBP or
Tuba is a cdc42-specific guanine nucleotide exchange
factor (GEF) that contains four N-terminal SH3 domains,
a central RhoGEF [or Dbl homology (DH)] domain followed
by a Bin/Amphiphysin/Rvs (BAR) domain, and two
C-terminal SH3 domains. It provides a functional link
between dynamin and key regulatory proteins of the
actin cytoskeleton. It plays an important role in
regulating cell junction configuration. The four
N-terminal SH3 domains of DNMBP binds the GTPase
dynamin, which plays an important role in the fission
of endocytic vesicles. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles
in the cell including the regulation of enzymes,
changing the subcellular localization of signaling
pathway components, and mediating the formation of
multiprotein complex assemblies.
Length = 54
Score = 33.6 bits (77), Expect = 0.009
Identities = 17/54 (31%), Positives = 27/54 (50%), Gaps = 3/54 (5%)
Query: 41 YRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELR-GQTGWFPESYVE 93
I F S+ L+ Q GD++ + ++ GWL G G +G+FP S V+
Sbjct: 2 VVCIEAFTSQEPGHLNLQRGDLVELTGTTDS--GWLQGRSCWGSSGFFPSSCVQ 53
Score = 31.7 bits (72), Expect = 0.047
Identities = 16/50 (32%), Positives = 26/50 (52%), Gaps = 4/50 (8%)
Query: 227 YTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVK 276
+T+ L+L RG L+ + T +GW +G G G+FP+S V+
Sbjct: 8 FTSQEPGHLNLQRGDLVELTGTTDSGWLQGRSCW-GSS---GFFPSSCVQ 53
>gnl|CDD|212769 cd11835, SH3_ARHGAP32_33, Src homology 3 domain of Rho
GTPase-activating proteins 32 and 33, and similar
proteins. Members of this family contain N-terminal PX
and Src Homology 3 (SH3) domains, a central Rho GAP
domain, and C-terminal extensions. RhoGAPs (or ARHGAPs)
bind to Rho proteins and enhance the hydrolysis rates of
bound GTP. ARHGAP32 is also called RICS, PX-RICS,
p250GAP, or p200RhoGAP. It is a Rho GTPase-activating
protein for Cdc42 and Rac1, and is implicated in the
regulation of postsynaptic signaling and neurite
outgrowth. PX-RICS, a variant of RICS that contain PX
and SH3 domains, is the main isoform expressed during
neural development. It is involved in neural functions
including axon and dendrite extension, postnatal
remodeling, and fine-tuning of neural circuits during
early brain development. ARHGAP33, also called sorting
nexin 26 or TCGAP (Tc10/CDC42 GTPase-activating
protein), is widely expressed in the brain where it is
involved in regulating the outgrowth of axons and
dendrites and is regulated by the protein tyrosine
kinase Fyn. It is translocated to the plasma membrane in
adipocytes in response to insulin and may be involved in
the regulation of insulin-stimulated glucose transport.
SH3 domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 54
Score = 33.6 bits (77), Expect = 0.010
Identities = 19/58 (32%), Positives = 30/58 (51%), Gaps = 8/58 (13%)
Query: 221 ATVLAPYTATSSEQLSLSRGQLIMI---RKKTTTGWWEGELQAKGKKRQVGWFPASYV 275
A V+ YTA + ++LSL G ++ + + WW G+ K QVG+FP+ V
Sbjct: 2 AHVIKRYTAQAPDELSLEVGDIVSVIDMPPPEESTWWRGK-----KGFQVGFFPSECV 54
Score = 30.9 bits (70), Expect = 0.085
Identities = 14/48 (29%), Positives = 23/48 (47%), Gaps = 4/48 (8%)
Query: 111 PYDSTEPGDLTFNQDEVIYV----TKKENDWWTGTIGDRTGLFPSNYV 154
Y + P +L+ +++ V +E+ WW G G + G FPS V
Sbjct: 7 RYTAQAPDELSLEVGDIVSVIDMPPPEESTWWRGKKGFQVGFFPSECV 54
Score = 28.6 bits (64), Expect = 0.50
Identities = 20/57 (35%), Positives = 27/57 (47%), Gaps = 11/57 (19%)
Query: 39 RRYRAIYEFVSRNGDELSFQPGDIIMV---PVKQNAEPGWLAGELRGQTGWFPESYV 92
+RY A + DELS + GDI+ V P + E W G+ Q G+FP V
Sbjct: 6 KRYTA------QAPDELSLEVGDIVSVIDMPPPE--ESTWWRGKKGFQVGFFPSECV 54
>gnl|CDD|212698 cd11764, SH3_Eps8, Src Homology 3 domain of Epidermal growth
factor receptor kinase substrate 8 and similar
proteins. This group is composed of Eps8 and Eps8-like
proteins including Eps8-like 1-3, among others. These
proteins contain N-terminal Phosphotyrosine-binding
(PTB), central SH3, and C-terminal effector domains.
Eps8 binds either Abi1 (also called E3b1) or Rab5
GTPase activating protein RN-tre through its SH3
domain. With Abi1 and Sos1, it becomes part of a
trimeric complex that is required to activate Rac.
Together with RN-tre, it inhibits the internalization
of EGFR. The SH3 domains of Eps8 and similar proteins
recognize peptides containing a PxxDY motif, instead of
the classical PxxP motif. SH3 domains are protein
interaction domains that usually bind to proline-rich
ligands with moderate affinity and selectivity. They
play versatile and diverse roles in the cell including
the regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 54
Score = 33.4 bits (77), Expect = 0.010
Identities = 18/54 (33%), Positives = 28/54 (51%), Gaps = 2/54 (3%)
Query: 41 YRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVEP 94
R +Y+F +RN ELS G+ + V ++ W RGQ G+ P + +EP
Sbjct: 2 VRVLYDFTARNSKELSVLKGEY--LEVLDDSRQWWKVRNSRGQVGYVPHNILEP 53
Score = 26.5 bits (59), Expect = 3.3
Identities = 12/54 (22%), Positives = 20/54 (37%), Gaps = 1/54 (1%)
Query: 105 YYIAAYPYDSTEPGDLTFNQDEVIYVTKKENDWW-TGTIGDRTGLFPSNYVVPY 157
Y Y + + +L+ + E + V WW + G P N + PY
Sbjct: 1 YVRVLYDFTARNSKELSVLKGEYLEVLDDSRQWWKVRNSRGQVGYVPHNILEPY 54
>gnl|CDD|212939 cd12006, SH3_Fyn_Yrk, Src homology 3 domain of Fyn and Yrk Protein
Tyrosine Kinases. Fyn and Yrk (Yes-related kinase) are
members of the Src subfamily of proteins, which are
cytoplasmic (or non-receptor) PTKs. Fyn, together with
Lck, plays a critical role in T-cell signal transduction
by phosphorylating ITAM (immunoreceptor tyr activation
motif) sequences on T-cell receptors, ultimately leading
to the proliferation and differentiation of T-cells. In
addition, Fyn is involved in the myelination of neurons,
and is implicated in Alzheimer's and Parkinson's
diseases. Yrk has been detected only in chickens. It is
primarily found in neuronal and epithelial cells and in
macrophages. It may play a role in inflammation and in
response to injury. Src kinases contain an N-terminal
SH4 domain with a myristoylation site, followed by SH3
and SH2 domains, a tyr kinase domain, and a regulatory
C-terminal region containing a conserved tyr. They are
activated by autophosphorylation at the tyr kinase
domain, but are negatively regulated by phosphorylation
at the C-terminal tyr by Csk (C-terminal Src Kinase).
The SH3 domain of Src kinases contributes to substrate
recruitment by binding adaptor proteins/substrates, and
regulation of kinase activity through an intramolecular
interaction. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate affinity
and selectivity, preferentially to PxxP motifs. They
play versatile and diverse roles in the cell including
the regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 56
Score = 33.5 bits (76), Expect = 0.010
Identities = 21/55 (38%), Positives = 30/55 (54%), Gaps = 5/55 (9%)
Query: 106 YIAAYPYDSTEPGDLTFNQDEVIYV-TKKENDWWTG---TIGDRTGLFPSNYVVP 156
++A Y Y++ DL+F++ E + E DWW T G+ TG PSNYV P
Sbjct: 3 FVALYDYEARTEDDLSFHKGEKFQILNSSEGDWWEARSLTTGE-TGYIPSNYVAP 56
Score = 30.0 bits (67), Expect = 0.15
Identities = 18/55 (32%), Positives = 31/55 (56%), Gaps = 2/55 (3%)
Query: 41 YRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGEL-RGQTGWFPESYVEP 94
+ A+Y++ +R D+LSF G+ + + + W A L G+TG+ P +YV P
Sbjct: 3 FVALYDYEARTEDDLSFHKGEKFQI-LNSSEGDWWEARSLTTGETGYIPSNYVAP 56
Score = 27.3 bits (60), Expect = 1.9
Identities = 15/52 (28%), Positives = 24/52 (46%), Gaps = 3/52 (5%)
Query: 224 LAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYV 275
L Y A + + LS +G+ I + WWE G + G+ P++YV
Sbjct: 6 LYDYEARTEDDLSFHKGEKFQILNSSEGDWWEARSLTTG---ETGYIPSNYV 54
>gnl|CDD|212984 cd12051, SH3_DOCK1_5_A, Src Homology 3 domain of Class A Dedicator
of Cytokinesis proteins 1 and 5. Dock1, also called
Dock180, and Dock5 are class A DOCKs and are atypical
guanine nucleotide exchange factors (GEFs) that lack the
conventional Dbl homology (DH) domain. Dock1 interacts
with the scaffold protein Elmo and the resulting complex
functions upstream of Rac in many biological events
including phagocytosis of apoptotic cells, cell
migration and invasion. Dock5 functions upstream of Rac1
to regulate osteoclast function. All DOCKs contain two
homology domains: the DHR-1 (Dock homology region-1),
also called CZH1 (CED-5, Dock180, and MBC-zizimin
homology 1), and DHR-2 (also called CZH2 or Docker). The
DHR-1 domain binds
phosphatidylinositol-3,4,5-triphosphate while DHR-2
contains the catalytic activity for Rac and/or Cdc42.
Class A DOCKs also contain an SH3 domain at the
N-terminal region and a PxxP motif at the C-terminus;
they are specific GEFs for Rac. The SH3 domain of Dock1
binds to DHR-2 in an autoinhibitory manner; binding of
Elmo to the SH3 domain of Dock1 exposes the DHR-2 domain
and promotes GEF activity. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 56
Score = 33.3 bits (76), Expect = 0.010
Identities = 21/50 (42%), Positives = 28/50 (56%), Gaps = 5/50 (10%)
Query: 227 YTATSSEQLSLSRGQLIMIRKKTTTGWWEG-ELQAKGKKRQVGWFPASYV 275
Y A ++LSL G + I + T GW+ G L+ K KK G FPASY+
Sbjct: 8 YDARGPDELSLQIGDTVHILE-TYEGWYRGYTLRKKSKK---GIFPASYI 53
Score = 32.5 bits (74), Expect = 0.021
Identities = 21/53 (39%), Positives = 28/53 (52%), Gaps = 6/53 (11%)
Query: 43 AIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAG---ELRGQTGWFPESYV 92
AIY + +R DELS Q GD V + + E GW G + + G FP SY+
Sbjct: 4 AIYNYDARGPDELSLQIGD--TVHILETYE-GWYRGYTLRKKSKKGIFPASYI 53
Score = 27.1 bits (60), Expect = 2.2
Identities = 14/53 (26%), Positives = 31/53 (58%), Gaps = 3/53 (5%)
Query: 105 YYIAAYPYDSTEPGDLTFNQDEVIYVTKKENDWWTG-TIGDRT--GLFPSNYV 154
Y +A Y YD+ P +L+ + +++ + W+ G T+ ++ G+FP++Y+
Sbjct: 1 YGVAIYNYDARGPDELSLQIGDTVHILETYEGWYRGYTLRKKSKKGIFPASYI 53
>gnl|CDD|212917 cd11984, SH3_Shank3, Src homology 3 domain of SH3 and multiple
ankyrin repeat domains protein 3. Shank3, also called
ProSAP2 (Proline-rich synapse-associated protein 2), is
widely expressed. It plays a role in the formation of
dendritic spines and synapses. Haploinsufficiency of the
Shank3 gene causes the 22q13 deletion/Phelan-McDermid
syndrome, and variants of Shank3 have been implicated in
autism spectrum disorder, schizophrenia, and
intellectual disability. Shank proteins carry
scaffolding functions through multiple sites of
protein-protein interaction in its domain architecture,
including ankyrin (ANK) repeats, a long proline rich
region, as well as SH3, PDZ, and SAM domains. The SH3
domain of Shank binds GRIP, a scaffold protein that
binds AMPA receptors and Eph receptors/ligands. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 52
Score = 33.4 bits (76), Expect = 0.011
Identities = 17/50 (34%), Positives = 27/50 (54%), Gaps = 1/50 (2%)
Query: 106 YIAAYPYDSTEPGDLTFNQDEVIYV-TKKENDWWTGTIGDRTGLFPSNYV 154
+IA Y G++ N+ E + V + E +W GT+ RTG FP++ V
Sbjct: 3 FIAVKAYSPQGEGEIQLNRGERVKVLSIGEGGFWEGTVKGRTGWFPADCV 52
Score = 29.9 bits (67), Expect = 0.19
Identities = 15/53 (28%), Positives = 26/53 (49%), Gaps = 5/53 (9%)
Query: 223 VLAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYV 275
+ Y+ ++ L+RG+ + + G+WEG + K + GWFPA V
Sbjct: 5 AVKAYSPQGEGEIQLNRGERVKVLSIGEGGFWEGTV-----KGRTGWFPADCV 52
Score = 25.3 bits (55), Expect = 7.5
Identities = 16/54 (29%), Positives = 26/54 (48%), Gaps = 2/54 (3%)
Query: 39 RRYRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYV 92
R + A+ + + E+ G+ V V E G+ G ++G+TGWFP V
Sbjct: 1 RTFIAVKAYSPQGEGEIQLNRGE--RVKVLSIGEGGFWEGTVKGRTGWFPADCV 52
>gnl|CDD|212877 cd11944, SH3_Endophilin_B2, Src homology 3 domain of
Endophilin-B2. Endophilin-B2, also called SH3GLB2
(SH3-domain GRB2-like endophilin B2), is a cytoplasmic
protein that interacts with the apoptosis inducer Bax.
It is overexpressed in prostate cancer metastasis and
has been identified as a cancer antigen with potential
utility in immunotherapy. Endophilins play roles in
synaptic vesicle formation, virus budding,
mitochondrial morphology maintenance, receptor-mediated
endocytosis inhibition, and endosomal sorting. They
contain an N-terminal N-BAR domain (BAR domain with an
additional N-terminal amphipathic helix), followed by a
variable region containing proline clusters, and a
C-terminal SH3 domain. Endophilin-B2 forms homo- and
heterodimers (with endophilin-B1) through its BAR
domain. The related protein endophilin-B1 interacts
with amphiphysin 1 and dynamin 1 through its SH3
domain. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP
motifs. They play versatile and diverse roles in the
cell including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 55
Score = 33.4 bits (76), Expect = 0.012
Identities = 16/54 (29%), Positives = 28/54 (51%)
Query: 40 RYRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVE 93
+ R +Y++ + + EL+ ++I V +P WL GE Q G P +Y+E
Sbjct: 1 KARVLYDYEAADSSELALLADELITVYSLPGMDPDWLIGERGNQKGKVPVTYLE 54
>gnl|CDD|213010 cd12077, SH3_Tks5_2, Second Src homology 3 domain of Tyrosine
kinase substrate with five SH3 domains. Tks5, also
called SH3 and PX domain-containing protein 2A
(SH3PXD2A) or Five SH (FISH), is a scaffolding protein
and Src substrate that is localized in podosomes, which
are electron-dense structures found in Src-transformed
fibroblasts, osteoclasts, macrophages, and some invasive
cancer cells. It binds and regulates some members of the
ADAMs family of transmembrane metalloproteases, which
function as sheddases and mediators of cell and matrix
interactions. It is required for podosome formation,
degradation of the extracellular matrix, and cancer cell
invasion. Tks5 contains an N-terminal Phox homology (PX)
domain and five SH3 domains. This model characterizes
the second SH3 domain of Tks5. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 54
Score = 33.1 bits (75), Expect = 0.014
Identities = 17/51 (33%), Positives = 29/51 (56%), Gaps = 5/51 (9%)
Query: 226 PYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVK 276
PYT+ +++ +G + + +K GWW ++ GK+ GW PASY+K
Sbjct: 8 PYTSQGKDEIGFEKGVTVEVIQKNLEGWW--YIRYLGKE---GWAPASYLK 53
Score = 31.9 bits (72), Expect = 0.037
Identities = 17/54 (31%), Positives = 30/54 (55%), Gaps = 2/54 (3%)
Query: 40 RYRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVE 93
+Y + + S+ DE+ F+ G + V +++N E GW G+ GW P SY++
Sbjct: 2 KYVTVQPYTSQGKDEIGFEKGVTVEV-IQKNLE-GWWYIRYLGKEGWAPASYLK 53
>gnl|CDD|212948 cd12015, SH3_Tks_1, First Src homology 3 domain of Tyrosine kinase
substrate (Tks) proteins. Tks proteins are Src
substrates and scaffolding proteins that play important
roles in the formation of podosomes and invadopodia, the
dynamic actin-rich structures that are related to cell
migration and cancer cell invasion. Vertebrates contain
two Tks proteins, Tks4 (Tyr kinase substrate with four
SH3 domains) and Tks5 (Tyr kinase substrate with five
SH3 domains), which display partially overlapping but
non-redundant functions. Both associate with the ADAMs
family of transmembrane metalloproteases, which function
as sheddases and mediators of cell and matrix
interactions. Tks5 interacts with N-WASP and Nck, while
Tks4 is essential for the localization of MT1-MMP
(membrane-type 1 matrix metalloproteinase) to
invadopodia. Tks proteins contain an N-terminal Phox
homology (PX) domain and four or five SH3 domains. This
model characterizes the first SH3 domain of Tks
proteins. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate affinity
and selectivity, preferentially to PxxP motifs. They
play versatile and diverse roles in the cell including
the regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 53
Score = 32.8 bits (75), Expect = 0.015
Identities = 16/53 (30%), Positives = 26/53 (49%), Gaps = 5/53 (9%)
Query: 222 TVLAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASY 274
V+A Y ++SL G ++ + +K GWW L+ + GW PA+Y
Sbjct: 3 VVVADYKKQQPNEISLRAGDVVDVIEKNENGWWFVSLE-----DEQGWVPATY 50
Score = 32.0 bits (73), Expect = 0.036
Identities = 17/54 (31%), Positives = 29/54 (53%), Gaps = 2/54 (3%)
Query: 41 YRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVEP 94
Y + ++ + +E+S + GD+ V V + E GW L + GW P +Y+EP
Sbjct: 2 YVVVADYKKQQPNEISLRAGDV--VDVIEKNENGWWFVSLEDEQGWVPATYLEP 53
Score = 29.3 bits (66), Expect = 0.28
Identities = 15/52 (28%), Positives = 27/52 (51%), Gaps = 1/52 (1%)
Query: 106 YIAAYPYDSTEPGDLTFNQDEVIYVTKK-ENDWWTGTIGDRTGLFPSNYVVP 156
Y+ Y +P +++ +V+ V +K EN WW ++ D G P+ Y+ P
Sbjct: 2 YVVVADYKKQQPNEISLRAGDVVDVIEKNENGWWFVSLEDEQGWVPATYLEP 53
>gnl|CDD|212694 cd11760, SH3_MIA_like, Src Homology 3 domain of Melanoma Inhibitory
Activity protein and similar proteins. MIA is a single
domain protein that adopts a SH3 domain-like fold; it
contains an additional antiparallel beta sheet and two
disulfide bonds compared to classical SH3 domains. MIA
is secreted from malignant melanoma cells and it plays
an important role in melanoma development and invasion.
MIA is expressed by chondrocytes in normal tissues and
may be important in the cartilage cell phenotype. Unlike
classical SH3 domains, MIA does not bind proline-rich
ligands. MIA is a member of the recently identified
family that also includes MIA-like (MIAL), MIA2, and
MIA3 (also called TANGO); the biological functions of
this family are not yet fully understood.
Length = 76
Score = 33.6 bits (77), Expect = 0.016
Identities = 14/60 (23%), Positives = 21/60 (35%), Gaps = 5/60 (8%)
Query: 221 ATVLAPYTATSSEQLSLSRGQLIMIRKKTTTGW---WEGELQAKGKKRQVGWFPASYVKV 277
A L Y L+ +G I + K W G + G G+FP + V+
Sbjct: 14 ARALEDYHGPDCRFLNFKKGDTIYVYSKLAGERQDLWAGSVG--GDAGLFGYFPKNLVQE 71
>gnl|CDD|212838 cd11905, SH3_Tec, Src Homology 3 domain of Tec (Tyrosine kinase
expressed in hepatocellular carcinoma). Tec is a
cytoplasmic (or nonreceptor) tyr kinase containing Src
homology protein interaction domains (SH3, SH2)
N-terminal to the catalytic tyr kinase domain. It also
contains an N-terminal pleckstrin homology (PH) domain,
which binds the products of PI3K and allows membrane
recruitment and activation, and the Tec homology (TH)
domain, which contains proline-rich and zinc-binding
regions. It is more widely-expressed than other Tec
subfamily kinases. Tec is found in endothelial cells,
both B- and T-cells, and a variety of myeloid cells
including mast cells, erythroid cells, platelets,
macrophages and neutrophils. Tec is a key component of
T-cell receptor (TCR) signaling, and is important in
TCR-stimulated proliferation, IL-2 production and
phospholipase C-gamma1 activation. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 56
Score = 32.9 bits (75), Expect = 0.016
Identities = 16/57 (28%), Positives = 27/57 (47%), Gaps = 4/57 (7%)
Query: 219 EIATVLAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYV 275
EI + + T L L G+ +I +K WW +A+ K + G+ P++YV
Sbjct: 1 EIVVAMYDFQPTEPHDLRLETGEEYVILEKNDVHWW----KARDKYGKEGYIPSNYV 53
Score = 32.9 bits (75), Expect = 0.017
Identities = 18/53 (33%), Positives = 25/53 (47%), Gaps = 2/53 (3%)
Query: 104 EYYIAAYPYDSTEPGDLTFNQ-DEVIYVTKKENDWWTGTIGD-RTGLFPSNYV 154
E +A Y + TEP DL +E + + K + WW + G PSNYV
Sbjct: 1 EIVVAMYDFQPTEPHDLRLETGEEYVILEKNDVHWWKARDKYGKEGYIPSNYV 53
>gnl|CDD|212728 cd11794, SH3_DNMBP_N1, First N-terminal Src homology 3 domain of
Dynamin Binding Protein, also called Tuba. DNMBP or
Tuba is a cdc42-specific guanine nucleotide exchange
factor (GEF) that contains four N-terminal SH3 domains,
a central RhoGEF [or Dbl homology (DH)] domain followed
by a Bin/Amphiphysin/Rvs (BAR) domain, and two
C-terminal SH3 domains. It provides a functional link
between dynamin and key regulatory proteins of the
actin cytoskeleton. It plays an important role in
regulating cell junction configuration. The four
N-terminal SH3 domains of DNMBP binds the GTPase
dynamin, which plays an important role in the fission
of endocytic vesicles. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles
in the cell including the regulation of enzymes,
changing the subcellular localization of signaling
pathway components, and mediating the formation of
multiprotein complex assemblies.
Length = 51
Score = 32.5 bits (74), Expect = 0.018
Identities = 20/51 (39%), Positives = 27/51 (52%), Gaps = 2/51 (3%)
Query: 42 RAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYV 92
RAI++F +EL GD+I V + + WL G G TG FP S+V
Sbjct: 3 RAIFDFCPSVSEELPLFAGDVI--EVLKVVDEFWLLGTKEGVTGQFPSSFV 51
>gnl|CDD|213019 cd12143, SH3_ARHGAP9, Src Homology 3 domain of Rho
GTPase-activating protein 9 and similar proteins. Rho
GTPase-activating proteins (RhoGAPs or ARHGAPs) bind to
Rho proteins and enhance the hydrolysis rates of bound
GTP. ARHGAP9 functions as a GAP for Rac and Cdc42, but
not for RhoA. It negatively regulates cell migration and
adhesion. It also acts as a docking protein for the MAP
kinases Erk2 and p38alpha, and may facilitate cross-talk
between the Rho GTPase and MAPK pathways to control
actin remodeling. It contains SH3, WW, Pleckstin
homology (PH), and RhoGAP domains. SH3 domains bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs; they play a
role in the regulation of enzymes by intramolecular
interactions, changing the subcellular localization of
signal pathway components and mediate multiprotein
complex assemblies.
Length = 57
Score = 33.0 bits (75), Expect = 0.018
Identities = 12/48 (25%), Positives = 24/48 (50%)
Query: 227 YTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASY 274
YT Q+S++ G+ ++ +KT + WW+ + + PA+Y
Sbjct: 10 YTGADGRQVSIAEGERFLLLRKTNSDWWQVRRLEAPSTSRPLFVPATY 57
>gnl|CDD|212708 cd11774, SH3_Sla1p_2, Second Src Homology 3 domain of the fungal
endocytic adaptor protein Sla1p. Sla1p facilitates
endocytosis by playing a role as an adaptor protein in
coupling components of the actin cytoskeleton to the
endocytic machinery. It interacts with Abp1p, Las17p and
Pan1p, which are activator proteins of actin-related
protein 2/3 (Arp2/3). Sla1p contains multiple domains
including three SH3 domains, a SAM (sterile alpha motif)
domain, and a Sla1 homology domain 1 (SHD1), which binds
to the NPFXD motif that is found in many integral
membrane proteins such as the Golgi-localized
Arf-binding protein Lsb5p and the P4-ATPases, Drs2p and
Dnf1p. SH3 domains are protein interaction domains that
bind to proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 52
Score = 32.4 bits (74), Expect = 0.020
Identities = 15/49 (30%), Positives = 24/49 (48%), Gaps = 2/49 (4%)
Query: 108 AAYPYDSTEPGDLTFNQDEVIYVTKKENDWWT--GTIGDRTGLFPSNYV 154
A Y YD +L+FN+ + + V + W G G + G P+NY+
Sbjct: 4 ALYDYDKQTEEELSFNEGDTLDVYDDSDSDWILVGFNGTQFGFVPANYI 52
Score = 29.0 bits (65), Expect = 0.32
Identities = 16/52 (30%), Positives = 29/52 (55%), Gaps = 3/52 (5%)
Query: 42 RAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGW-LAGELRGQTGWFPESYV 92
+A+Y++ + +ELSF GD + V +++ W L G Q G+ P +Y+
Sbjct: 3 KALYDYDKQTEEELSFNEGDTL--DVYDDSDSDWILVGFNGTQFGFVPANYI 52
>gnl|CDD|212955 cd12022, SH3_p47phox_2, Second or C-terminal Src homology 3 domain
of the p47phox subunit of NADPH oxidase, also called
Neutrophil Cytosolic Factor 1. p47phox, or NCF1, is a
cytosolic subunit of the phagocytic NADPH oxidase
complex (also called Nox2 or gp91phox), which plays a
key role in the ability of phagocytes to defend against
bacterial infections. NADPH oxidase catalyzes the
transfer of electrons from NADPH to oxygen during
phagocytosis forming superoxide and reactive oxygen
species. p47phox is required for activation of NADH
oxidase and plays a role in translocation. It contains
an N-terminal Phox homology (PX) domain, tandem SH3
domains (N-SH3 and C-SH3), a polybasic/autoinhibitory
region, and a C-terminal proline-rich region (PRR). This
model characterizes the second SH3 domain (or C-SH3) of
p47phox. In its inactive state, the tandem SH3 domains
interact intramolecularly with the autoinhibitory
region; upon activation, the tandem SH3 domains are
exposed through a conformational change, resulting in
their binding to the PRR of p22phox and the activation
of NADPH oxidase. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP motifs.
They play versatile and diverse roles in the cell
including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 53
Score = 32.5 bits (74), Expect = 0.021
Identities = 20/50 (40%), Positives = 25/50 (50%), Gaps = 1/50 (2%)
Query: 106 YIAAYPYDSTEPGDLTFNQDEVIYVTKKEND-WWTGTIGDRTGLFPSNYV 154
YI Y + E +LT + E I V K D WW G+ TG FPS Y+
Sbjct: 2 YITIKAYTAVEEDELTLLEGEAIEVIHKLLDGWWVVRKGEVTGYFPSMYL 51
Score = 30.6 bits (69), Expect = 0.095
Identities = 16/50 (32%), Positives = 25/50 (50%), Gaps = 5/50 (10%)
Query: 227 YTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVK 276
YTA ++L+L G+ I + K GWW K G+FP+ Y++
Sbjct: 8 YTAVEEDELTLLEGEAIEVIHKLLDGWW-----VVRKGEVTGYFPSMYLQ 52
Score = 26.7 bits (59), Expect = 2.1
Identities = 16/53 (30%), Positives = 23/53 (43%), Gaps = 2/53 (3%)
Query: 41 YRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVE 93
Y I + + DEL+ G+ I V K GW TG+FP Y++
Sbjct: 2 YITIKAYTAVEEDELTLLEGEAIEVIHK--LLDGWWVVRKGEVTGYFPSMYLQ 52
>gnl|CDD|212799 cd11865, SH3_Nbp2-like, Src Homology 3 domain of Saccharomyces
cerevisiae Nap1-binding protein 2 and similar fungal
proteins. This subfamily includes Saccharomyces
cerevisiae Nbp2 (Nucleosome assembly protein 1
(Nap1)-binding protein 2), Schizosaccharomyces pombe
Skb5, and similar proteins. Nbp2 interacts with Nap1,
which is essential for maintaining proper nucleosome
structures in transcription and replication. It is also
the binding partner of the yeast type II protein
phosphatase Ptc1p and serves as a scaffolding protein
that brings seven kinases in close contact to Ptc1p.
Nbp2 plays a role many cell processes including
organelle inheritance, mating hormone response, cell
wall stress, mitotic cell growth at elevated
temperatures, and high osmolarity. Skb5 interacts with
the p21-activated kinase (PAK) homolog Shk1, which is
critical for fission yeast cell viability. Skb5
activates Shk1 and plays a role in regulating cell
morphology and growth under hypertonic conditions. Nbp2
and Skb5 contain an SH3 domain. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles
in the cell including the regulation of enzymes,
changing the subcellular localization of signaling
pathway components, and mediating the formation of
multiprotein complex assemblies.
Length = 55
Score = 32.5 bits (74), Expect = 0.022
Identities = 19/53 (35%), Positives = 27/53 (50%), Gaps = 4/53 (7%)
Query: 43 AIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAG--ELRGQTGWFPESYVE 93
A+Y+F + +EL F G I+ + K GWL E G+TG PE +V
Sbjct: 4 ALYDFEPEHDNELGFAEGQILFILYKHGQ--GWLIAEDESGGKTGLVPEEFVS 54
>gnl|CDD|212876 cd11943, SH3_JIP1, Src homology 3 domain of JNK-interacting
protein 1. JNK-interacting protein 1 (JIP1) is also
called Islet-brain 1 (IB1) or Mitogen-activated protein
kinase 8-interacting protein 1 (MAPK8IP1). It is highly
expressed in neurons, where it functions as an adaptor
linking motor to cargo during axonal transport. It also
affects microtubule dynamics in neurons. JIP1 is also
found in pancreatic beta-cells, where it is involved in
regulating insulin secretion. In addition to a JNK
binding domain, JIP1 also contains SH3 and
Phosphotyrosine-binding (PTB) domains. Its SH3 domain
homodimerizes at the interface usually involved in
proline-rich ligand recognition, despite the lack of
this motif in the domain itself. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 55
Score = 32.7 bits (74), Expect = 0.022
Identities = 20/53 (37%), Positives = 29/53 (54%), Gaps = 4/53 (7%)
Query: 41 YRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAG-ELR-GQTGWFPESY 91
+RA++ FV R+ DEL + D ++V V+ AE W +R G G FP Y
Sbjct: 2 HRAVFRFVPRHPDELELEVDDPLLVEVQ--AEDYWYEAYNMRTGARGIFPAYY 52
>gnl|CDD|212840 cd11907, SH3_TXK, Src Homology 3 domain of TXK, also called Resting
lymphocyte kinase (Rlk). TXK is a cytoplasmic (or
nonreceptor) tyr kinase containing Src homology protein
interaction domains (SH3, SH2) N-terminal to the
catalytic tyr kinase domain. It also contains an
N-terminal cysteine-rich region. Rlk is expressed in
T-cells and mast cell lines, and is a key component of
T-cell receptor (TCR) signaling. It is important in
TCR-stimulated proliferation, IL-2 production and
phospholipase C-gamma1 activation. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 55
Score = 32.6 bits (74), Expect = 0.022
Identities = 17/52 (32%), Positives = 25/52 (48%), Gaps = 6/52 (11%)
Query: 107 IAAYPYDSTEPGDLTFNQ-DEVIYVTKKENDWWTGTIGDR---TGLFPSNYV 154
A Y + EP +L + +E + + + + WW DR GL PSNYV
Sbjct: 4 KALYDFLPREPSNLALKRAEEYLILEQYDPHWWKAR--DRYGNEGLIPSNYV 53
>gnl|CDD|213016 cd12140, SH3_Amphiphysin_I, Src Homology 3 domain of Amphiphysin
I. Amphiphysins function primarily in endocytosis and
other membrane remodeling events. They exist in several
isoforms and mammals possess two amphiphysin proteins
from distinct genes. Amphiphysin I proteins, enriched
in the brain and nervous system, contain domains that
bind clathrin, Adaptor Protein complex 2 (AP2),
dynamin, and synaptojanin. They function in synaptic
vesicle endocytosis. Human autoantibodies to
amphiphysin I hinder GABAergic signaling and contribute
to the pathogenesis of paraneoplastic stiff-person
syndrome. Amphiphysins contain an N-terminal BAR domain
with an additional N-terminal amphipathic helix (an
N-BAR), a variable central domain, and a C-terminal SH3
domain. The SH3 domain of amphiphysins bind
proline-rich motifs present in binding partners such as
dynamin, synaptojanin, and nsP3. It also belongs to a
subset of SH3 domains that bind ubiquitin in a site
that overlaps with the peptide binding site. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 72
Score = 32.9 bits (75), Expect = 0.023
Identities = 18/61 (29%), Positives = 30/61 (49%), Gaps = 13/61 (21%)
Query: 44 IYEFVSRNGDELSFQPGDIIMVPVKQNA---EPGWLAG----------ELRGQTGWFPES 90
+++F + N DEL + GDI++V + A + GWL G + G FPE+
Sbjct: 8 LHDFEAANSDELELKRGDIVLVVPSETAADQDAGWLTGVKESDWLQYRDASAYKGLFPEN 67
Query: 91 Y 91
+
Sbjct: 68 F 68
>gnl|CDD|212887 cd11954, SH3_ASPP1, Src Homology 3 domain of Apoptosis
Stimulating of p53 protein 1. ASPP1, like ASPP2,
activates the apoptotic function of the p53 family of
tumor suppressors (p53, p63, and p73). In addition, it
functions in the cytoplasm to regulate the nuclear
localization of the transcriptional cofactors YAP and
TAZ by inihibiting their phosphorylation; YAP and TAZ
are important regulators of cell expansion,
differentiation, migration, and invasion. ASPP1 is
downregulated in breast tumors expressing wild-type
p53. It contains a proline-rich region, four ankyrin
(ANK) repeats, and an SH3 domain at its C-terminal
half. The SH3 domain and the ANK repeats of ASPP1
contribute to the p53 binding site; they bind to the
DNA binding domain of p53. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles
in the cell including the regulation of enzymes,
changing the subcellular localization of signaling
pathway components, and mediating the formation of
multiprotein complex assemblies.
Length = 57
Score = 32.3 bits (73), Expect = 0.025
Identities = 17/49 (34%), Positives = 31/49 (63%), Gaps = 1/49 (2%)
Query: 43 AIYEFVSRNGDELSFQPGD-IIMVPVKQNAEPGWLAGELRGQTGWFPES 90
A++++ ++N DELSFQ GD I ++ K ++E W L + G+ P++
Sbjct: 5 ALWDYEAQNADELSFQEGDAITILRRKDDSETEWWWARLNDKEGYVPKN 53
Score = 31.9 bits (72), Expect = 0.041
Identities = 12/49 (24%), Positives = 25/49 (51%), Gaps = 4/49 (8%)
Query: 108 AAYPYDSTEPGDLTFNQDEVIYVTKK----ENDWWTGTIGDRTGLFPSN 152
A + Y++ +L+F + + I + ++ E +WW + D+ G P N
Sbjct: 5 ALWDYEAQNADELSFQEGDAITILRRKDDSETEWWWARLNDKEGYVPKN 53
>gnl|CDD|212818 cd11885, SH3_SH3TC, Src Homology 3 domain of SH3 domain and
tetratricopeptide repeat-containing (SH3TC) proteins and
similar domains. This subfamily is composed of
vertebrate SH3TC proteins and hypothetical fungal
proteins containing BAR and SH3 domains. Mammals contain
two SH3TC proteins, SH3TC1 and SH3TC2. The function of
SH3TC1 is unknown. SH3TC2 is localized in Schwann cells
in the peripheral nervous system, where it interacts
with Rab11 and plays a role in peripheral nerve
myelination. Mutations in SH3TC2 are associated with
Charcot-Marie-Tooth disease type 4C, a severe hereditary
peripheral neuropathy with symptoms that include
progressive scoliosis, delayed age of walking, muscular
atrophy, distal weakness, and reduced nerve conduction
velocity. SH3 domains bind to proline-rich ligands with
moderate affinity and selectivity, preferentially to
PxxP motifs; they play a role in the regulation of
enzymes by intramolecular interactions, changing the
subcellular localization of signal pathway components
and mediate multiprotein complex assemblies.
Length = 55
Score = 32.3 bits (74), Expect = 0.027
Identities = 15/52 (28%), Positives = 23/52 (44%), Gaps = 5/52 (9%)
Query: 108 AAYPYDSTEPGDLTFNQD---EVIYVTKKENDWWTGTIGD--RTGLFPSNYV 154
A ++ EPG+L+F Q E+I W+ G R G P+N+
Sbjct: 4 AKMDFEGVEPGELSFRQGDSIEIIGDLIPGLQWFVGRSKSSGRVGFVPTNHF 55
Score = 29.6 bits (67), Expect = 0.22
Identities = 14/55 (25%), Positives = 22/55 (40%), Gaps = 2/55 (3%)
Query: 40 RYRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAG--ELRGQTGWFPESYV 92
A +F ELSF+ GD I + W G + G+ G+ P ++
Sbjct: 1 SCTAKMDFEGVEPGELSFRQGDSIEIIGDLIPGLQWFVGRSKSSGRVGFVPTNHF 55
>gnl|CDD|212945 cd12012, SH3_RIM-BP_2, Second Src homology 3 domain of
Rab3-interacting molecules (RIMs) binding proteins.
RIMs binding proteins (RBPs, RIM-BPs) associate with
calcium channels present in photoreceptors, neurons,
and hair cells; they interact simultaneously with
specific calcium channel subunits, and active zone
proteins, RIM1 and RIM2. RIMs are part of the matrix at
the presynaptic active zone and are associated with
synaptic vesicles through their interaction with the
small GTPase Rab3. RIM-BPs play a role in regulating
synaptic transmission by serving as adaptors and
linking calcium channels with the synaptic vesicle
release machinery. RIM-BPs contain three SH3 domains
and two to three fibronectin III repeats. Invertebrates
contain one, while vertebrates contain at least two
RIM-BPs, RIM-BP1 and RIM-BP2. RIM-BP1 is also called
peripheral-type benzodiazapine receptor associated
protein 1 (PRAX-1). Mammals contain a third protein,
RIM-BP3. RIM-BP1 and RIM-BP2 are predominantly
expressed in the brain where they display overlapping
but distinct expression patterns, while RIM-BP3 is
almost exclusively expressed in the testis and is
essential in spermiogenesis. The SH3 domains of RIM-BPs
bind to the PxxP motifs of RIM1, RIM2, and L-type
(alpha1D) and N-type (alpha1B) calcium channel
subunits. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate
affinity and selectivity. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 62
Score = 32.3 bits (74), Expect = 0.029
Identities = 14/41 (34%), Positives = 24/41 (58%), Gaps = 1/41 (2%)
Query: 53 DELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVE 93
+EL F+ G +I V ++A+ G+ GE+ G+ G P + V
Sbjct: 22 EELPFKEGQLIKVYGDKDAD-GFYLGEINGRRGLVPCNMVS 61
Score = 30.0 bits (68), Expect = 0.23
Identities = 17/61 (27%), Positives = 27/61 (44%), Gaps = 10/61 (16%)
Query: 105 YYIAAYPYD--STEPGD------LTFNQDEVIYV--TKKENDWWTGTIGDRTGLFPSNYV 154
++A + YD + P L F + ++I V K + ++ G I R GL P N V
Sbjct: 1 LFVALFDYDPLTMSPNPDAAEEELPFKEGQLIKVYGDKDADGFYLGEINGRRGLVPCNMV 60
Query: 155 V 155
Sbjct: 61 S 61
>gnl|CDD|212956 cd12023, SH3_NoxO1_1, First or N-terminal Src homology 3 domain of
Nox Organizing protein 1. Nox Organizing protein 1
(NoxO1) is a critical regulator of enzyme kinetics of
the nonphagocytic NADPH oxidase Nox1, which catalyzes
the transfer of electrons from NADPH to molecular oxygen
to form superoxide. Nox1 is expressed in colon, stomach,
uterus, prostate, and vascular smooth muscle cells.
NoxO1 is involved in targeting activator subunits (such
as NoxA1) to Nox1. It is co-localized with Nox1 in the
membranes of resting cells and directs the subcellular
localization of Nox1. NoxO1 contains an N-terminal Phox
homology (PX) domain, tandem SH3 domains (N-SH3 and
C-SH3), and a C-terminal proline-rich region (PRR). This
model characterizes the first SH3 domain (or N-SH3) of
NoxO1. The tandem SH3 domains of NoxO1 interact with the
PRR of p22phox, which also complexes with Nox1. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 56
Score = 32.1 bits (73), Expect = 0.030
Identities = 17/55 (30%), Positives = 28/55 (50%), Gaps = 6/55 (10%)
Query: 224 LAPYTA--TSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVK 276
LAP+ T ++ + + + + K TGWW E + RQ+ WFPA Y++
Sbjct: 5 LAPFETKDTKNKPFKAAAQESLDVLLKDPTGWWLVE----NEDRQIAWFPAPYLE 55
>gnl|CDD|213017 cd12141, SH3_DNMBP_C2, Second C-terminal Src homology 3 domain of
Dynamin Binding Protein, also called Tuba, and similar
domains. DNMBP or Tuba is a cdc42-specific guanine
nucleotide exchange factor (GEF) that contains four
N-terminal SH3 domains, a central RhoGEF [or Dbl
homology (DH)] domain followed by a Bin/Amphiphysin/Rvs
(BAR) domain, and two C-terminal SH3 domains. It
provides a functional link between dynamin, Rho GTPase
signaling, and actin dynamics. It plays an important
role in regulating cell junction configuration. The
C-terminal SH3 domains of DNMBP bind to N-WASP and
Ena/VASP proteins, which are key regulatory proteins of
the actin cytoskeleton. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles
in the cell including the regulation of enzymes,
changing the subcellular localization of signaling
pathway components, and mediating the formation of
multiprotein complex assemblies.
Length = 57
Score = 32.1 bits (73), Expect = 0.033
Identities = 16/54 (29%), Positives = 24/54 (44%), Gaps = 2/54 (3%)
Query: 41 YRAIYEFVSRNGDELSFQPGDI--IMVPVKQNAEPGWLAGELRGQTGWFPESYV 92
Y A+Y F +R+ +ELS I+ W E GQ G+ P +Y+
Sbjct: 2 YYAVYTFKARSPNELSVSANQRVRILEFSDLTGNKEWWLAEANGQKGYVPSNYI 55
Score = 27.8 bits (62), Expect = 1.2
Identities = 12/54 (22%), Positives = 26/54 (48%), Gaps = 5/54 (9%)
Query: 106 YIAAYPYDSTEPGDLTFNQDEVIYVTKKEN-----DWWTGTIGDRTGLFPSNYV 154
Y A Y + + P +L+ + ++ + + + + +WW + G PSNY+
Sbjct: 2 YYAVYTFKARSPNELSVSANQRVRILEFSDLTGNKEWWLAEANGQKGYVPSNYI 55
>gnl|CDD|212825 cd11892, SH3_MIA2, Src Homology 3 domain of Melanoma Inhibitory
Activity 2 protein. MIA2 is expressed specifically in
hepatocytes and its expression is controlled by
hepatocyte nuclear factor 1 binding sites in the MIA2
promoter. It inhibits the growth and invasion of
hepatocellular carcinomas (HCC) and may act as a tumor
suppressor. A mutation in MIA2 in mice resulted in
reduced cholesterol and triglycerides. Since MIA2
localizes to ER exit sites, it may function as an
ER-to-Golgi trafficking protein that regulates lipid
metabolism. MIA2 contains an N-terminal SH3-like domain,
similar to MIA. It is a member of the recently
identified family that also includes MIA, MIAL, and MIA3
(also called TANGO). MIA is a single domain protein that
adopts a SH3 domain-like fold; it contains an additional
antiparallel beta sheet and two disulfide bonds compared
to classical SH3 domains. Unlike classical SH3 domains,
MIA does not bind proline-rich ligands.
Length = 73
Score = 32.5 bits (74), Expect = 0.034
Identities = 13/39 (33%), Positives = 19/39 (48%), Gaps = 4/39 (10%)
Query: 120 LTFNQDEVIYV----TKKENDWWTGTIGDRTGLFPSNYV 154
L+F + + I V + K D W G+ G G FP + V
Sbjct: 28 LSFKKGDEIIVYYKLSGKREDLWAGSTGKEFGYFPKDAV 66
>gnl|CDD|212836 cd11903, SH3_Nck2_3, Third Src Homology 3 domain of Nck2 adaptor
protein. Nck2 (also called Nckbeta or Growth factor
receptor-bound protein 4, Grb4) plays a crucial role in
connecting signaling pathways of tyrosine kinase
receptors and important effectors in actin dynamics and
cytoskeletal remodeling. It binds neuronal signaling
proteins such as ephrinB and Disabled-1 (Dab-1)
exclusively. Nck adaptor proteins regulate actin
cytoskeleton dynamics by linking proline-rich effector
molecules to protein tyrosine kinases and
phosphorylated signaling intermediates. They contain
three SH3 domains and a C-terminal SH2 domain. They
function downstream of the PDGFbeta receptor and are
involved in Rho GTPase signaling and actin dynamics.
Vertebrates contain two Nck adaptor proteins: Nck1
(also called Nckalpha) and Nck2, which show partly
overlapping functions but also bind distinct targets.
The third SH3 domain of Nck appears to prefer ligands
with a PxAPxR motif. SH3 domains are protein
interaction domains that usually bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially a PxxP motif. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 59
Score = 32.0 bits (72), Expect = 0.038
Identities = 18/52 (34%), Positives = 28/52 (53%), Gaps = 1/52 (1%)
Query: 42 RAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWL-AGELRGQTGWFPESYV 92
+ +Y F S +EL+F+ G+ + V K +P W RGQ G P++YV
Sbjct: 4 QTLYPFSSVTEEELNFEKGETMEVIEKPENDPEWWKCKNSRGQVGLVPKNYV 55
Score = 31.2 bits (70), Expect = 0.077
Identities = 20/50 (40%), Positives = 26/50 (52%), Gaps = 4/50 (8%)
Query: 110 YPYDSTEPGDLTFNQDEVIYVTKK-END--WWT-GTIGDRTGLFPSNYVV 155
YP+ S +L F + E + V +K END WW + GL P NYVV
Sbjct: 7 YPFSSVTEEELNFEKGETMEVIEKPENDPEWWKCKNSRGQVGLVPKNYVV 56
Score = 29.6 bits (66), Expect = 0.23
Identities = 16/61 (26%), Positives = 32/61 (52%), Gaps = 6/61 (9%)
Query: 220 IATVLAPYTATSSEQLSLSRGQLIMIRKKTTTG--WWEGELQAKGKKRQVGWFPASYVKV 277
+ L P+++ + E+L+ +G+ + + +K WW + K + QVG P +YV V
Sbjct: 2 VVQTLYPFSSVTEEELNFEKGETMEVIEKPENDPEWW----KCKNSRGQVGLVPKNYVVV 57
Query: 278 M 278
+
Sbjct: 58 L 58
>gnl|CDD|212842 cd11909, SH3_PI3K_p85beta, Src Homology 3 domain of the p85beta
regulatory subunit of Class IA Phosphatidylinositol
3-kinases. Class I PI3Ks convert PtdIns(4,5)P2 to the
critical second messenger PtdIns(3,4,5)P3. They are
heterodimers and exist in multiple isoforms consisting
of one catalytic subunit (out of four isoforms) and one
of several regulatory subunits. Class IA PI3Ks
associate with the p85 regulatory subunit family, which
contains SH3, RhoGAP, and SH2 domains. The p85 subunits
recruit the PI3K p110 catalytic subunit to the
membrane, where p110 phosphorylates inositol lipids.
Vertebrates harbor two p85 isoforms, called alpha and
beta. In addition to regulating the p110 subunit,
p85beta binds CD28 and may be involved in the
activation and differentiation of antigen-stimulated T
cells. SH3 domains are protein interaction domains that
bind to proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 74
Score = 32.1 bits (73), Expect = 0.041
Identities = 22/69 (31%), Positives = 33/69 (47%), Gaps = 15/69 (21%)
Query: 40 RYRAIYEFVSRNGDELSFQPGDIIMVP--------VKQNAEP-----GWLAG--ELRGQT 84
+YRA+Y + +++ PGD++ V VK+ E GW+ G E Q
Sbjct: 2 QYRALYPYRKEREEDIDLLPGDVLTVSRAALQALGVKEGGEQCPQSIGWILGLNERTKQR 61
Query: 85 GWFPESYVE 93
G FP +YVE
Sbjct: 62 GDFPGTYVE 70
>gnl|CDD|212744 cd11810, SH3_RUSC1_like, Src homology 3 domain of RUN and SH3
domain-containing proteins 1 and 2. RUSC1 and RUSC2,
that were originally characterized in silico. They are
adaptor proteins consisting of RUN, leucine zipper, and
SH3 domains. RUSC1, also called NESCA (New molecule
containing SH3 at the carboxy-terminus), is highly
expressed in the brain and is translocated to the
nuclear membrane from the cytoplasm upon stimulation
with neurotrophin. It plays a role in facilitating
neurotrophin-dependent neurite outgrowth. It also
interacts with NEMO (or IKKgamma) and may function in
NEMO-mediated activation of NF-kB. RUSC2, also called
Iporin, is expressed ubiquitously with highest amounts
in the brain and testis. It interacts with the small
GTPase Rab1 and the Golgi matrix protein GM130, and may
function in linking GTPases to certain intracellular
signaling pathways. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP motifs.
They play versatile and diverse roles in the cell
including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 50
Score = 31.3 bits (71), Expect = 0.048
Identities = 13/40 (32%), Positives = 23/40 (57%), Gaps = 1/40 (2%)
Query: 115 TEPGDLTFNQDEVIYV-TKKENDWWTGTIGDRTGLFPSNY 153
T+ G L+F + +++ V + ++DW T G GL P +Y
Sbjct: 11 TDSGQLSFRKGDILRVIARVDDDWLLCTRGSTKGLVPLSY 50
Score = 31.3 bits (71), Expect = 0.063
Identities = 16/52 (30%), Positives = 24/52 (46%), Gaps = 2/52 (3%)
Query: 40 RYRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESY 91
RA+ V+ + +LSF+ GDI+ V + + WL G P SY
Sbjct: 1 VVRALCHHVATDSGQLSFRKGDILRVIAR--VDDDWLLCTRGSTKGLVPLSY 50
>gnl|CDD|212843 cd11910, SH3_PI3K_p85alpha, Src Homology 3 domain of the p85alpha
regulatory subunit of Class IA Phosphatidylinositol
3-kinases. Class I PI3Ks convert PtdIns(4,5)P2 to the
critical second messenger PtdIns(3,4,5)P3. They are
heterodimers and exist in multiple isoforms consisting
of one catalytic subunit (out of four isoforms) and one
of several regulatory subunits. Class IA PI3Ks
associate with the p85 regulatory subunit family, which
contains SH3, RhoGAP, and SH2 domains. The p85 subunits
recruit the PI3K p110 catalytic subunit to the
membrane, where p110 phosphorylates inositol lipids.
Vertebrates harbor two p85 isoforms, called alpha and
beta. In addition to regulating the p110 subunit,
p85alpha interacts with activated FGFR3. SH3 domains
are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 75
Score = 32.2 bits (73), Expect = 0.049
Identities = 23/69 (33%), Positives = 33/69 (47%), Gaps = 15/69 (21%)
Query: 40 RYRAIYEFVSRNGDELSFQPGDIIMVPVK----------QNAEP---GWLAG--ELRGQT 84
+YRA+Y++ +++ GDI+ V Q A P GWL G E G+
Sbjct: 3 QYRALYDYKKEREEDIDLHLGDILTVNKGSLLALGFSEGQEARPEEIGWLNGYNETTGER 62
Query: 85 GWFPESYVE 93
G FP +YVE
Sbjct: 63 GDFPGTYVE 71
>gnl|CDD|212839 cd11906, SH3_BTK, Src Homology 3 domain of Bruton's tyrosine
kinase. BTK is a cytoplasmic (or nonreceptor) tyr
kinase containing Src homology protein interaction
domains (SH3, SH2) N-terminal to the catalytic tyr
kinase domain. It also contains an N-terminal
pleckstrin homology (PH) domain, which binds the
products of PI3K and allows membrane recruitment and
activation, and the Tec homology (TH) domain with
proline-rich and zinc-binding regions. Btk is expressed
in B-cells, and a variety of myeloid cells including
mast cells, platelets, neutrophils, and dendrictic
cells. It interacts with a variety of partners, from
cytosolic proteins to nuclear transcription factors,
suggesting a diversity of functions. Stimulation of a
diverse array of cell surface receptors, including
antigen engagement of the B-cell receptor (BCR), leads
to PH-mediated membrane translocation of Btk and
subsequent phosphorylation by Src kinase and
activation. Btk plays an important role in the life
cycle of B-cells including their development,
differentiation, proliferation, survival, and
apoptosis. Mutations in Btk cause the primary
immunodeficiency disease, X-linked agammaglobulinaemia
(XLA) in humans. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP
motifs. They play versatile and diverse roles in the
cell including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 55
Score = 31.3 bits (71), Expect = 0.052
Identities = 13/50 (26%), Positives = 29/50 (58%), Gaps = 1/50 (2%)
Query: 43 AIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYV 92
A+Y++ N +L + G+ ++ ++++ P W A + G+ G+ P +YV
Sbjct: 5 ALYDYTPMNAQDLQLRKGEEYVI-LEESNLPWWRARDKNGREGYIPSNYV 53
Score = 30.6 bits (69), Expect = 0.12
Identities = 15/51 (29%), Positives = 21/51 (41%), Gaps = 2/51 (3%)
Query: 107 IAAYPYDSTEPGDLTFNQD-EVIYVTKKENDWWTGTIGD-RTGLFPSNYVV 155
+A Y Y DL + E + + + WW + R G PSNYV
Sbjct: 4 VALYDYTPMNAQDLQLRKGEEYVILEESNLPWWRARDKNGREGYIPSNYVT 54
Score = 27.9 bits (62), Expect = 1.00
Identities = 14/49 (28%), Positives = 29/49 (59%), Gaps = 4/49 (8%)
Query: 227 YTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYV 275
YT +++ L L +G+ +I +++ WW +A+ K + G+ P++YV
Sbjct: 9 YTPMNAQDLQLRKGEEYVILEESNLPWW----RARDKNGREGYIPSNYV 53
>gnl|CDD|212811 cd11878, SH3_Bem1p_1, First Src Homology 3 domain of Bud emergence
protein 1 and similar domains. Members of this
subfamily bear similarity to Saccharomyces cerevisiae
Bem1p, containing two Src Homology 3 (SH3) domains at
the N-terminus, a central PX domain, and a C-terminal
PB1 domain. Bem1p is a scaffolding protein that is
critical for proper Cdc42p activation during bud
formation in yeast. During budding and mating, Bem1p
migrates to the plasma membrane where it can serve as an
adaptor for Cdc42p and some other proteins. Bem1p also
functions as an effector of the G1 cyclin Cln3p and the
cyclin-dependent kinase Cdc28p in promoting vacuolar
fusion. SH3 domains bind to proline-rich ligands with
moderate affinity and selectivity, preferentially to
PxxP motifs; they play a role in the regulation of
enzymes by intramolecular interactions, changing the
subcellular localization of signal pathway components
and mediate multiprotein complex assemblies.
Length = 54
Score = 31.5 bits (72), Expect = 0.054
Identities = 15/50 (30%), Positives = 28/50 (56%), Gaps = 4/50 (8%)
Query: 108 AAYPYDSTEPGDLTFNQDEVIYVTKKE--NDWW--TGTIGDRTGLFPSNY 153
A Y Y + PG+L+F++ + +V +E +W+ T + + GL P +Y
Sbjct: 4 ALYDYRAQTPGELSFSKGDFFHVIGEEDQGEWYEATNPVTGKRGLVPKSY 53
Score = 29.2 bits (66), Expect = 0.36
Identities = 10/24 (41%), Positives = 15/24 (62%)
Query: 42 RAIYEFVSRNGDELSFQPGDIIMV 65
RA+Y++ ++ ELSF GD V
Sbjct: 3 RALYDYRAQTPGELSFSKGDFFHV 26
Score = 25.7 bits (57), Expect = 5.1
Identities = 16/52 (30%), Positives = 24/52 (46%), Gaps = 4/52 (7%)
Query: 224 LAPYTATSSEQLSLSRGQLI-MIRKKTTTGWWEGELQAKGKKRQVGWFPASY 274
L Y A + +LS S+G +I ++ W+E GK+ G P SY
Sbjct: 5 LYDYRAQTPGELSFSKGDFFHVIGEEDQGEWYEATNPVTGKR---GLVPKSY 53
>gnl|CDD|213008 cd12075, SH3_Tks4_1, First Src homology 3 domain of Tyrosine kinase
substrate with four SH3 domains. Tks4, also called SH3
and PX domain-containing protein 2B (SH3PXD2B) or HOFI,
is a Src substrate and scaffolding protein that plays an
important role in the formation of podosomes and
invadopodia, the dynamic actin-rich structures that are
related to cell migration and cancer cell invasion. It
is required in the formation of functional podosomes,
EGF-induced membrane ruffling, and lamellipodia
generation. It plays an important role in cellular
attachment and cell spreading. Tks4 is essential for the
localization of MT1-MMP (membrane-type 1 matrix
metalloproteinase) to invadopodia. It contains an
N-terminal Phox homology (PX) domain and four SH3
domains. This model characterizes the first SH3 domain
of Tks4. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate affinity
and selectivity, preferentially to PxxP motifs. They
play versatile and diverse roles in the cell including
the regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 55
Score = 31.6 bits (71), Expect = 0.057
Identities = 17/51 (33%), Positives = 26/51 (50%), Gaps = 5/51 (9%)
Query: 223 VLAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPAS 273
V+A Y S ++SL GQ++ I +K +GWW + GW PA+
Sbjct: 5 VVANYQKQESSEISLYVGQVVDIIEKNESGWW-----FVSTADEQGWVPAT 50
Score = 25.4 bits (55), Expect = 8.2
Identities = 11/49 (22%), Positives = 23/49 (46%), Gaps = 1/49 (2%)
Query: 104 EYYIAAYPYDSTEPGDLTFNQDEVIYVTKK-ENDWWTGTIGDRTGLFPS 151
+ Y+ Y E +++ +V+ + +K E+ WW + D G P+
Sbjct: 1 DQYVVVANYQKQESSEISLYVGQVVDIIEKNESGWWFVSTADEQGWVPA 49
>gnl|CDD|212785 cd11851, SH3_RIM-BP, Src homology 3 domains of Rab3-interacting
molecules (RIMs) binding proteins. RIMs binding
proteins (RBPs, RIM-BPs) associate with calcium
channels present in photoreceptors, neurons, and hair
cells; they interact simultaneously with specific
calcium channel subunits, and active zone proteins,
RIM1 and RIM2. RIMs are part of the matrix at the
presynaptic active zone and are associated with
synaptic vesicles through their interaction with the
small GTPase Rab3. RIM-BPs play a role in regulating
synaptic transmission by serving as adaptors and
linking calcium channels with the synaptic vesicle
release machinery. RIM-BPs contain three SH3 domains
and two to three fibronectin III repeats. Invertebrates
contain one, while vertebrates contain at least two
RIM-BPs, RIM-BP1 and RIM-BP2. RIM-BP1 is also called
peripheral-type benzodiazapine receptor associated
protein 1 (PRAX-1). Mammals contain a third protein,
RIM-BP3. RIM-BP1 and RIM-BP2 are predominantly
expressed in the brain where they display overlapping
but distinct expression patterns, while RIM-BP3 is
almost exclusively expressed in the testis and is
essential in spermiogenesis. The SH3 domains of RIM-BPs
bind to the PxxP motifs of RIM1, RIM2, and L-type
(alpha1D) and N-type (alpha1B) calcium channel
subunits. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate
affinity and selectivity. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 62
Score = 31.5 bits (72), Expect = 0.057
Identities = 21/63 (33%), Positives = 33/63 (52%), Gaps = 9/63 (14%)
Query: 40 RYRAIYEF----VSRNGD---ELSFQPGDIIMVPVKQNAEPGWLAGELRG-QTGWFPESY 91
A+Y++ +S N D ELSF GD++ V + E G+ GEL G + G P ++
Sbjct: 1 LMVALYDYNPETMSPNDDPEEELSFHAGDVVRVYGPMD-EDGFYYGELEGGRKGLVPSNF 59
Query: 92 VEP 94
V+
Sbjct: 60 VQE 62
Score = 30.7 bits (70), Expect = 0.091
Identities = 19/59 (32%), Positives = 29/59 (49%), Gaps = 10/59 (16%)
Query: 106 YIAAYPYDSTE--PGD-----LTFNQDEVIYV--TKKENDWWTG-TIGDRTGLFPSNYV 154
+A Y Y+ P D L+F+ +V+ V E+ ++ G G R GL PSN+V
Sbjct: 2 MVALYDYNPETMSPNDDPEEELSFHAGDVVRVYGPMDEDGFYYGELEGGRKGLVPSNFV 60
>gnl|CDD|212983 cd12050, SH3_DOCK2_A, Src Homology 3 domain of Class A Dedicator
of Cytokinesis protein 2. Dock2 is a hematopoietic
cell-specific, class A DOCK and is an atypical guanine
nucleotide exchange factor (GEF) that lacks the
conventional Dbl homology (DH) domain. It plays an
important role in lymphocyte migration and activation,
T-cell differentiation, neutrophil chemotaxis, and type
I interferon induction. All DOCKs contain two homology
domains: the DHR-1 (Dock homology region-1), also
called CZH1 (CED-5, Dock180, and MBC-zizimin homology
1), and DHR-2 (also called CZH2 or Docker). The DHR-1
domain binds phosphatidylinositol-3,4,5-triphosphate
while DHR-2 contains the catalytic activity for Rac
and/or Cdc42. Class A DOCKs also contain an SH3 domain
at the N-terminal region and a PxxP motif at the
C-terminus; they are specific GEFs for Rac. The SH3
domain of Dock2 binds to DHR-2 in an autoinhibitory
manner; binding of the scaffold protein Elmo to the SH3
domain of Dock2 exposes the DHR-2 domain and promotes
GEF activity. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP
motifs. They play versatile and diverse roles in the
cell including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 56
Score = 31.4 bits (71), Expect = 0.064
Identities = 17/53 (32%), Positives = 25/53 (47%), Gaps = 6/53 (11%)
Query: 43 AIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGEL---RGQTGWFPESYV 92
AIY F +LS Q GD++ + Q W G L + G FP+S++
Sbjct: 4 AIYNFKGSGVPQLSLQIGDVVHI---QETCEDWYKGYLVRHKDLQGIFPKSFI 53
>gnl|CDD|212826 cd11893, SH3_MIA3, Src Homology 3 domain of Melanoma Inhibitory
Activity 3 protein. MIA3, also called TANGO or TANGO1,
acts as a tumor suppressor of malignant melanoma. It is
downregulated or lost in melanoma cells lines. Unlike
other MIA family members, MIA3 is widely expressed
except in hematopoietic cells. MIA3 is an ER resident
transmembrane protein that is required for the loading
of collagen VII into transport vesicles. SNPs in the
MIA3 gene have been associated with coronary arterial
disease and myocardial infarction. MIA3 contains an
N-terminal SH3-like domain, similar to MIA. It is a
member of the recently identified family that also
includes MIA, MIAL, and MIA2. MIA is a single domain
protein that adopts a SH3 domain-like fold; it contains
an additional antiparallel beta sheet and two disulfide
bonds compared to classical SH3 domains. Unlike
classical SH3 domains, MIA does not bind proline-rich
ligands.
Length = 73
Score = 31.7 bits (72), Expect = 0.064
Identities = 14/39 (35%), Positives = 20/39 (51%), Gaps = 4/39 (10%)
Query: 120 LTFNQDEVIYVTKK----ENDWWTGTIGDRTGLFPSNYV 154
L+F + E IYV K D W G++G G FP + +
Sbjct: 28 LSFKKGETIYVYYKLSGRRTDLWAGSVGFDFGYFPKDLL 66
>gnl|CDD|212888 cd11955, SH3_srGAP1-3, Src homology 3 domain of Slit-Robo GTPase
Activating Proteins 1, 2, and 3. srGAP1, also called
Rho GTPase-Activating Protein 13 (ARHGAP13), is a Cdc42-
and RhoA-specific GAP and is expressed later in the
development of central nervous system tissues. srGAP2 is
expressed in zones of neuronal differentiation. It plays
a role in the regeneration of neurons and axons. srGAP3,
also called MEGAP (MEntal disorder associated
GTPase-Activating Protein), is a Rho GAP with activity
towards Rac1 and Cdc42. It impacts cell migration by
regulating actin and microtubule cytoskeletal dynamics.
The association between srGAP3 haploinsufficiency and
mental retardation is under debate. srGAPs are Rho GAPs
that interact with Robo1, the transmembrane receptor of
Slit proteins. Slit proteins are secreted proteins that
control axon guidance and the migration of neurons and
leukocytes. srGAPs contain an N-terminal F-BAR domain, a
Rho GAP domain, and a C-terminal SH3 domain. SH3 domains
are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 53
Score = 31.1 bits (70), Expect = 0.073
Identities = 14/50 (28%), Positives = 23/50 (46%), Gaps = 1/50 (2%)
Query: 107 IAAYPYDSTEPGDLTFNQ-DEVIYVTKKENDWWTGTIGDRTGLFPSNYVV 155
IA + Y +L+F + ++ + +DWW G GL P Y+V
Sbjct: 3 IAKFDYVGRSARELSFKKGASLLLYHRASDDWWEGRHNGIDGLVPHQYIV 52
Score = 26.8 bits (59), Expect = 2.1
Identities = 9/30 (30%), Positives = 17/30 (56%)
Query: 227 YTATSSEQLSLSRGQLIMIRKKTTTGWWEG 256
Y S+ +LS +G +++ + + WWEG
Sbjct: 8 YVGRSARELSFKKGASLLLYHRASDDWWEG 37
>gnl|CDD|212912 cd11979, SH3_VAV1_1, First Src homology 3 domain of VAV1 protein.
VAV1 is expressed predominantly in the hematopoietic
system and it plays an important role in the development
and activation of B and T cells. It is activated by
tyrosine phosphorylation to function as a guanine
nucleotide exchange factor (GEF) for Rho GTPases
following cell surface receptor activation, triggering
various effects such as cytoskeletal reorganization,
transcription regulation, cell cycle progression, and
calcium mobilization. It also serves as a scaffold
protein and has been shown to interact with Ku70, Socs1,
Janus kinase 2, SIAH2, S100B, Abl gene, ZAP-70, SLP76,
and Syk, among others. VAV proteins contain several
domains that enable their function: N-terminal calponin
homology (CH), acidic, RhoGEF (also called
Dbl-homologous or DH), Pleckstrin Homology (PH), C1
(zinc finger), SH2, and two SH3 domains. The first SH3
domain of Vav1 has been shown to bind the adaptor
protein Grb2. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP motifs.
They play versatile and diverse roles in the cell
including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 63
Score = 31.1 bits (70), Expect = 0.075
Identities = 23/62 (37%), Positives = 30/62 (48%), Gaps = 5/62 (8%)
Query: 100 EVVPEYYIAAYPYDSTEPGDLTFNQDEVIYVTKKEND--WWTG--TIGDRTGLFPSNYVV 155
EV EYY P + P L N +++ +TK E + WW G T + G FP N V
Sbjct: 3 EVFQEYYGIPPPPGAFGP-FLRLNPGDIVELTKAEAEQNWWEGRNTSTNEIGWFPCNRVK 61
Query: 156 PY 157
PY
Sbjct: 62 PY 63
Score = 27.6 bits (61), Expect = 1.7
Identities = 17/45 (37%), Positives = 22/45 (48%), Gaps = 3/45 (6%)
Query: 52 GDELSFQPGDIIMVPVKQNAEPGWLAGE--LRGQTGWFPESYVEP 94
G L PGDI+ + K AE W G + GWFP + V+P
Sbjct: 19 GPFLRLNPGDIVEL-TKAEAEQNWWEGRNTSTNEIGWFPCNRVKP 62
Score = 27.3 bits (60), Expect = 2.0
Identities = 14/43 (32%), Positives = 23/43 (53%), Gaps = 4/43 (9%)
Query: 235 LSLSRGQLIMIRK-KTTTGWWEGELQAKGKKRQVGWFPASYVK 276
L L+ G ++ + K + WWEG + ++GWFP + VK
Sbjct: 22 LRLNPGDIVELTKAEAEQNWWEGRNTSTN---EIGWFPCNRVK 61
>gnl|CDD|212699 cd11765, SH3_Nck_1, First Src Homology 3 domain of Nck adaptor
proteins. Nck adaptor proteins regulate actin
cytoskeleton dynamics by linking proline-rich effector
molecules to protein tyrosine kinases and phosphorylated
signaling intermediates. They contain three SH3 domains
and a C-terminal SH2 domain. They function downstream of
the PDGFbeta receptor and are involved in Rho GTPase
signaling and actin dynamics. Vertebrates contain two
Nck adaptor proteins: Nck1 (also called Nckalpha) and
Nck2 (also called Nckbeta or Growth factor
receptor-bound protein 4, Grb4), which show partly
overlapping functions but also bind distinct targets.
Their SH3 domains are involved in recruiting downstream
effector molecules, such as the N-WASP/Arp2/3 complex,
which when activated induces actin polymerization that
results in the production of pedestals, or protrusions
of the plasma membrane. The first SH3 domain of Nck
proteins preferentially binds the PxxDY sequence, which
is present in the CD3e cytoplasmic tail. This binding
inhibits phosphorylation by Src kinases, resulting in
the downregulation of TCR surface expression. SH3
domains are protein interaction domains that usually
bind to proline-rich ligands with moderate affinity and
selectivity, preferentially a PxxP motif. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 51
Score = 30.5 bits (69), Expect = 0.091
Identities = 15/51 (29%), Positives = 25/51 (49%), Gaps = 1/51 (1%)
Query: 105 YYIAAYPYDSTEPGDLTFNQDEVIYVTKKENDWW-TGTIGDRTGLFPSNYV 154
Y +A Y Y + +L+ ++E + + WW ++TG PSNYV
Sbjct: 1 YVVAKYDYTAQGDQELSIKKNEKLTLLDDSKHWWKVQNSSNQTGYVPSNYV 51
>gnl|CDD|212765 cd11831, SH3_VAV_1, First Src homology 3 domain of VAV proteins.
VAV proteins function both as cytoplasmic guanine
nucleotide exchange factors (GEFs) for Rho GTPases and
scaffold proteins and they play important roles in cell
signaling by coupling cell surface receptors to various
effector functions. They play key roles in processes
that require cytoskeletal reorganization including
immune synapse formation, phagocytosis, cell spreading,
and platelet aggregation, among others. Vertebrates
have three VAV proteins (VAV1, VAV2, and VAV3). VAV
proteins contain several domains that enable their
function: N-terminal calponin homology (CH), acidic,
RhoGEF (also called Dbl-homologous or DH), Pleckstrin
Homology (PH), C1 (zinc finger), SH2, and two SH3
domains. The SH3 domain of VAV is involved in the
localization of proteins to specific sites within the
cell, by interacting with proline-rich sequences within
target proteins. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP
motifs. They play versatile and diverse roles in the
cell including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 62
Score = 30.7 bits (69), Expect = 0.12
Identities = 16/45 (35%), Positives = 25/45 (55%), Gaps = 3/45 (6%)
Query: 52 GDELSFQPGDIIMVPVKQNAEPGWLAGEL--RGQTGWFPESYVEP 94
G L+ Q GD++ + +K +AE W G + G+FP S V+P
Sbjct: 19 GPVLTLQTGDVVEL-LKGDAESPWWEGRNVATREVGYFPSSSVKP 62
Score = 28.7 bits (64), Expect = 0.54
Identities = 15/43 (34%), Positives = 25/43 (58%), Gaps = 4/43 (9%)
Query: 235 LSLSRGQLI-MIRKKTTTGWWEGELQAKGKKRQVGWFPASYVK 276
L+L G ++ +++ + WWEG A + VG+FP+S VK
Sbjct: 22 LTLQTGDVVELLKGDAESPWWEGRNVATRE---VGYFPSSSVK 61
>gnl|CDD|213007 cd12074, SH3_Tks5_1, First Src homology 3 domain of Tyrosine kinase
substrate with five SH3 domains. Tks5, also called SH3
and PX domain-containing protein 2A (SH3PXD2A) or Five
SH (FISH), is a scaffolding protein and Src substrate
that is localized in podosomes, which are electron-dense
structures found in Src-transformed fibroblasts,
osteoclasts, macrophages, and some invasive cancer
cells. It binds and regulates some members of the ADAMs
family of transmembrane metalloproteases, which function
as sheddases and mediators of cell and matrix
interactions. It is required for podosome formation,
degradation of the extracellular matrix, and cancer cell
invasion. Tks5 contains an N-terminal Phox homology (PX)
domain and five SH3 domains. This model characterizes
the first SH3 domain of Tks5. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 53
Score = 30.5 bits (68), Expect = 0.12
Identities = 14/53 (26%), Positives = 28/53 (52%), Gaps = 5/53 (9%)
Query: 223 VLAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYV 275
V++ Y + ++SL G+++ + +K +GWW + GW PA+Y+
Sbjct: 4 VVSNYEKQENSEISLQAGEVVDVIEKNESGWW-----FVSTAEEQGWVPATYL 51
Score = 26.2 bits (57), Expect = 3.5
Identities = 15/54 (27%), Positives = 26/54 (48%), Gaps = 2/54 (3%)
Query: 40 RYRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVE 93
+Y + + + E+S Q G++ V V + E GW + GW P +Y+E
Sbjct: 1 QYVVVSNYEKQENSEISLQAGEV--VDVIEKNESGWWFVSTAEEQGWVPATYLE 52
Score = 25.1 bits (54), Expect = 9.1
Identities = 13/50 (26%), Positives = 25/50 (50%), Gaps = 1/50 (2%)
Query: 106 YIAAYPYDSTEPGDLTFNQDEVIYVTKK-ENDWWTGTIGDRTGLFPSNYV 154
Y+ Y+ E +++ EV+ V +K E+ WW + + G P+ Y+
Sbjct: 2 YVVVSNYEKQENSEISLQAGEVVDVIEKNESGWWFVSTAEEQGWVPATYL 51
>gnl|CDD|212711 cd11777, SH3_CIP4_Bzz1_like, Src Homology 3 domain of
Cdc42-Interacting Protein 4, Bzz1 and similar domains.
This subfamily is composed of Cdc42-Interacting Protein
4 (CIP4) and similar proteins such as Formin Binding
Protein 17 (FBP17) and FormiN Binding Protein 1-Like
(FNBP1L), as well as yeast Bzz1 (or Bzz1p). CIP4 and
FNBP1L are Cdc42 effectors that bind Wiskott-Aldrich
syndrome protein (WASP) and function in endocytosis.
CIP4 and FBP17 bind to the Fas ligand and may be
implicated in the inflammatory response. CIP4 may also
play a role in phagocytosis. Bzz1 is also a
WASP/Las17-interacting protein involved in endocytosis
and trafficking to the vacuole. It physically interacts
with type I myosins and functions in the early steps of
endocytosis. Members of this subfamily contain an
N-terminal F-BAR (FES-CIP4 Homology and
Bin/Amphiphysin/Rvs) domain as well as at least one
C-terminal SH3 domain. Bzz1 contains a second SH3
domain at the C-terminus. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles
in the cell including the regulation of enzymes,
changing the subcellular localization of signaling
pathway components, and mediating the formation of
multiprotein complex assemblies.
Length = 55
Score = 30.3 bits (68), Expect = 0.12
Identities = 14/52 (26%), Positives = 27/52 (51%), Gaps = 2/52 (3%)
Query: 42 RAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWL-AGELRGQTGWFPESYV 92
+A+Y FV + +S G+ + + V+++ GW G+ G+ P SY+
Sbjct: 3 KALYAFVGSSEGTISMTEGEKLSL-VEEDKGDGWTRVRRDTGEEGYVPTSYI 53
>gnl|CDD|212855 cd11922, SH3_Sorbs1_2, Second Src Homology 3 domain of Sorbin and
SH3 domain containing 1 (Sorbs1), also called ponsin.
Sorbs1 is also called ponsin, SH3P12, or CAP (c-Cbl
associated protein). It is an adaptor protein containing
one sorbin homology (SoHo) and three SH3 domains. It
binds Cbl and plays a major role in regulating the
insulin signaling pathway by enhancing insulin-induced
phosphorylation of Cbl. Sorbs1, like vinexin, localizes
at cell-ECM and cell-cell adhesion sites where it binds
vinculin, paxillin, and afadin. It may function in the
control of cell motility. Other interaction partners of
Sorbs1 include c-Abl, Sos, flotillin, Grb4, ataxin-7,
filamin C, among others. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 58
Score = 30.3 bits (68), Expect = 0.13
Identities = 15/52 (28%), Positives = 28/52 (53%), Gaps = 3/52 (5%)
Query: 227 YTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVKVM 278
+ + ++S +G+ I + ++ W+EG + G RQ G FP +YV V+
Sbjct: 9 FNGDTQVEMSFRKGERITLLRQVDENWYEGRI--PGTSRQ-GIFPITYVDVI 57
>gnl|CDD|212791 cd11857, SH3_DBS, Src homology 3 domain of DBL's Big Sister
(DBS), a guanine nucleotide exchange factor. DBS, also
called MCF2L (MCF2-transforming sequence-like protein)
or OST, is a Rho GTPase guanine nucleotide exchange
factor (RhoGEF), facilitating the exchange of GDP and
GTP. It was originally isolated from a cDNA screen for
sequences that cause malignant growth. It plays roles
in regulating clathrin-mediated endocytosis and cell
migration through its activation of Rac1 and Cdc42.
Depending on cell type, DBS can also activate RhoA and
RhoG. DBS contains a Sec14-like domain, spectrin-like
repeats, a RhoGEF [or Dbl homology (DH)] domain, a
Pleckstrin homology (PH) domain, and an SH3 domain. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 55
Score = 29.9 bits (68), Expect = 0.16
Identities = 12/50 (24%), Positives = 25/50 (50%), Gaps = 2/50 (4%)
Query: 40 RYRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGEL-RGQTGWFP 88
+Y + ++ D+L+ + GD++ + + + E WL L + GW P
Sbjct: 1 KYTVVADYEKGGPDDLTVKSGDLVQL-IHEGDEGQWLVKNLSTRKEGWVP 49
>gnl|CDD|212916 cd11983, SH3_Shank2, Src homology 3 domain of SH3 and multiple
ankyrin repeat domains protein 2. Shank2, also called
ProSAP1 (Proline-rich synapse-associated protein 1) or
CortBP1 (Cortactin-binding protein 1), is found in
neurons, glia, endocrine cells, liver, and kidney. It
plays a role in regulating dendritic spine volume and
branching and postsynaptic clustering. Mutations in the
Shank2 gene are associated with autism spectrum disorder
and mental retardation. Shank proteins carry scaffolding
functions through multiple sites of protein-protein
interaction in its domain architecture, including
ankyrin (ANK) repeats, a long proline rich region, as
well as SH3, PDZ, and SAM domains. The SH3 domain of
Shank binds GRIP, a scaffold protein that binds AMPA
receptors and Eph receptors/ligands. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 52
Score = 29.9 bits (67), Expect = 0.17
Identities = 17/53 (32%), Positives = 25/53 (47%), Gaps = 5/53 (9%)
Query: 223 VLAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYV 275
V+ Y ++ L +G + + G+WEG A+G VGWFPA V
Sbjct: 5 VVKSYQPQVEGEIPLHKGDRVKVLSIGEGGFWEG--SARG---HVGWFPAECV 52
Score = 26.0 bits (57), Expect = 4.5
Identities = 16/54 (29%), Positives = 22/54 (40%), Gaps = 2/54 (3%)
Query: 39 RRYRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYV 92
R + + + + E+ GD V V E G+ G RG GWFP V
Sbjct: 1 RHFVVVKSYQPQVEGEIPLHKGD--RVKVLSIGEGGFWEGSARGHVGWFPAECV 52
>gnl|CDD|212784 cd11850, SH3_Abl, Src homology 3 domain of the Protein Tyrosine
Kinase, Abelson kinase. Abl (or c-Abl) is a
ubiquitously-expressed cytoplasmic (or nonreceptor) PTK
that contains SH3, SH2, and tyr kinase domains in its
N-terminal region, as well as nuclear localization
motifs, a putative DNA-binding domain, and F- and
G-actin binding domains in its C-terminal tail. It also
contains a short autoinhibitory cap region in its
N-terminus. Abl function depends on its subcellular
localization. In the cytoplasm, Abl plays a role in cell
proliferation and survival. In response to DNA damage or
oxidative stress, Abl is transported to the nucleus
where it induces apoptosis. In chronic myelogenous
leukemia (CML) patients, an aberrant translocation
results in the replacement of the first exon of Abl with
the BCR (breakpoint cluster region) gene. The resulting
BCR-Abl fusion protein is constitutively active and
associates into tetramers, resulting in a hyperactive
kinase sending a continuous signal. This leads to
uncontrolled proliferation, morphological transformation
and anti-apoptotic effects. BCR-Abl is the target of
selective inhibitors, such as imatinib (Gleevec), used
in the treatment of CML. Abl2, also known as ARG
(Abelson-related gene), is thought to play a cooperative
role with Abl in the proper development of the nervous
system. The Tel-ARG fusion protein, resulting from
reciprocal translocation between chromosomes 1 and 12,
is associated with acute myeloid leukemia (AML). SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 56
Score = 30.1 bits (68), Expect = 0.17
Identities = 14/53 (26%), Positives = 26/53 (49%), Gaps = 2/53 (3%)
Query: 223 VLAPYTATSSEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYV 275
L + A+ QLS+ +G+ + + G W E ++K GW P++Y+
Sbjct: 4 ALYDFVASGENQLSIKKGEQLRVLGYNKNGEW-CEAESK-STGGQGWVPSNYI 54
Score = 27.4 bits (61), Expect = 1.7
Identities = 17/54 (31%), Positives = 29/54 (53%), Gaps = 3/54 (5%)
Query: 43 AIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELR--GQTGWFPESYVEP 94
A+Y+FV+ ++LS + G+ + V + N W E + G GW P +Y+ P
Sbjct: 4 ALYDFVASGENQLSIKKGEQLRV-LGYNKNGEWCEAESKSTGGQGWVPSNYITP 56
>gnl|CDD|212832 cd11899, SH3_Nck2_1, First Src Homology 3 domain of Nck2 adaptor
protein. Nck2 (also called Nckbeta or Growth factor
receptor-bound protein 4, Grb4) plays a crucial role in
connecting signaling pathways of tyrosine kinase
receptors and important effectors in actin dynamics and
cytoskeletal remodeling. It binds neuronal signaling
proteins such as ephrinB and Disabled-1 (Dab-1)
exclusively. Nck adaptor proteins regulate actin
cytoskeleton dynamics by linking proline-rich effector
molecules to protein tyrosine kinases and phosphorylated
signaling intermediates. They contain three SH3 domains
and a C-terminal SH2 domain. They function downstream of
the PDGFbeta receptor and are involved in Rho GTPase
signaling and actin dynamics. Vertebrates contain two
Nck adaptor proteins: Nck1 (also called Nckalpha) and
Nck2, which show partly overlapping functions but also
bind distinct targets. The first SH3 domain of Nck2
binds the PxxDY sequence in the CD3e cytoplasmic tail;
this binding inhibits phosphorylation by Src kinases,
resulting in the downregulation of TCR surface
expression. SH3 domains are protein interaction domains
that usually bind to proline-rich ligands with moderate
affinity and selectivity, preferentially a PxxP motif.
They play versatile and diverse roles in the cell
including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 58
Score = 29.7 bits (66), Expect = 0.22
Identities = 15/49 (30%), Positives = 25/49 (51%), Gaps = 1/49 (2%)
Query: 107 IAAYPYDSTEPGDLTFNQDEVIYVTKKENDWW-TGTIGDRTGLFPSNYV 154
IA + Y + + +L ++E +++ WW +RTG PSNYV
Sbjct: 7 IAKWDYTAQQDQELDIKKNERLWLLDDSKTWWRVRNAANRTGYVPSNYV 55
>gnl|CDD|212957 cd12024, SH3_NoxO1_2, Second or C-terminal Src homology 3 domain of
NADPH oxidase (Nox) Organizing protein 1. Nox
Organizing protein 1 (NoxO1) is a critical regulator of
enzyme kinetics of the nonphagocytic NADPH oxidase Nox1,
which catalyzes the transfer of electrons from NADPH to
molecular oxygen to form superoxide. Nox1 is expressed
in colon, stomach, uterus, prostate, and vascular smooth
muscle cells. NoxO1 is involved in targeting activator
subunits (such as NoxA1) to Nox1. It is co-localized
with Nox1 in the membranes of resting cells and directs
the subcellular localization of Nox1. NoxO1 contains an
N-terminal Phox homology (PX) domain, tandem SH3 domains
(N-SH3 and C-SH3), and a C-terminal proline-rich region
(PRR). This model characterizes the second SH3 domain
(or C-SH3) of NoxO1. The tandem SH3 domains of NoxO1
interact with the PRR of p22phox, which also complexes
with Nox1. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate affinity
and selectivity, preferentially to PxxP motifs. They
play versatile and diverse roles in the cell including
the regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 53
Score = 29.6 bits (67), Expect = 0.24
Identities = 9/32 (28%), Positives = 17/32 (53%)
Query: 223 VLAPYTATSSEQLSLSRGQLIMIRKKTTTGWW 254
Y A ++LS+ G ++ + +K+ GWW
Sbjct: 4 ATRAYEAQKEDELSVPAGVVVEVLQKSDNGWW 35
Score = 28.5 bits (64), Expect = 0.56
Identities = 15/52 (28%), Positives = 25/52 (48%), Gaps = 1/52 (1%)
Query: 106 YIAAYPYDSTEPGDLTFNQDEVIYVTKKEND-WWTGTIGDRTGLFPSNYVVP 156
Y A Y++ + +L+ V+ V +K ++ WW R G PS Y+ P
Sbjct: 2 YYATRAYEAQKEDELSVPAGVVVEVLQKSDNGWWLIRYNGRAGYVPSMYLQP 53
>gnl|CDD|213000 cd12067, SH3_MYO15A, Src Homology 3 domain of Myosin XVa. Myosin
XVa is an unconventional myosin that is critical for
the normal growth of mechanosensory stereocilia of
inner ear hair cells. Mutations in the myosin XVa gene
are associated with nonsyndromic hearing loss. Myosin
XVa contains a unique N-terminal extension followed by
a motor domain, light chain-binding IQ motifs, and a
tail consisting of a pair of MyTH4-FERM tandems
separated by a SH3 domain, and a PDZ domain. SH3
domains bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP
motifs; they play a role in the regulation of enzymes
by intramolecular interactions, changing the
subcellular localization of signal pathway components
and mediate multiprotein complex assemblies.
Length = 80
Score = 30.2 bits (68), Expect = 0.27
Identities = 19/80 (23%), Positives = 28/80 (35%), Gaps = 31/80 (38%)
Query: 43 AIYEFVSRNGDELSFQPGDIIMVPVKQNAEP----------------------------G 74
A+ ++ + LSF GDII + Q E G
Sbjct: 4 AVRNYLPEDPALLSFHKGDIIHL---QPLEGPKVGQYYGCVVRKKVMYLEELKRGTPDFG 60
Query: 75 WLAGELRGQTGWFPESYVEP 94
W G + G++G FP V+P
Sbjct: 61 WKFGAIHGRSGVFPAELVQP 80
Score = 28.2 bits (63), Expect = 1.4
Identities = 9/20 (45%), Positives = 12/20 (60%)
Query: 137 WWTGTIGDRTGLFPSNYVVP 156
W G I R+G+FP+ V P
Sbjct: 61 WKFGAIHGRSGVFPAELVQP 80
>gnl|CDD|212875 cd11942, SH3_JIP2, Src homology 3 domain of JNK-interacting
protein 2. JNK-interacting protein 2 (JIP2) is also
called Mitogen-activated protein kinase 8-interacting
protein 2 (MAPK8IP2) or Islet-brain-2 (IB2). It is
widely expressed in the brain, where it forms complexes
with fibroblast growth factor homologous factors
(FHFs), which facilitates activation of the p38delta
MAPK. JIP2 is enriched in postsynaptic densities and
may play a role in motor and cognitive function. In
addition to a JNK binding domain, JIP2 also contains
SH3 and Phosphotyrosine-binding (PTB) domains. The SH3
domain of the related protein JIP1 homodimerizes at the
interface usually involved in proline-rich ligand
recognition, despite the lack of this motif in the
domain itself. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP
motifs. They play versatile and diverse roles in the
cell including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 55
Score = 29.5 bits (66), Expect = 0.28
Identities = 17/53 (32%), Positives = 29/53 (54%), Gaps = 4/53 (7%)
Query: 41 YRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAG-ELR-GQTGWFPESY 91
+RA++ F+ R+ DEL D ++V +++ W G +R G+ G FP Y
Sbjct: 2 HRAVFRFIPRHEDELELDVDDPLLVEAEEDDY--WYRGYNMRTGERGIFPAFY 52
Score = 26.0 bits (57), Expect = 4.1
Identities = 13/49 (26%), Positives = 24/49 (48%), Gaps = 3/49 (6%)
Query: 108 AAYPYDSTEPGDLTFNQDEVIYVTKKENDWWTGTIGDRT---GLFPSNY 153
A + + +L + D+ + V +E+D+W RT G+FP+ Y
Sbjct: 4 AVFRFIPRHEDELELDVDDPLLVEAEEDDYWYRGYNMRTGERGIFPAFY 52
>gnl|CDD|212944 cd12011, SH3_SLAP2, Src homology 3 domain of Src-Like Adaptor
Protein 2. SLAP2 plays a role in c-Cbl-dependent
regulation of CSF1R, a tyrosine kinase important for
myeloid cell growth and differentiation. It has been
shown to interact with CSF1R, c-Cbl, LAT, CD247, and
Zap70. SLAPs are adaptor proteins with limited
similarity to Src family tyrosine kinases. They contain
an N-terminal SH3 domain followed by an SH2 domain, and
a unique C-terminal sequence. They function in
regulating the signaling, ubiquitination, and
trafficking of T-cell receptor (TCR) and B-cell receptor
(BCR) components. The SH3 domain of SLAP forms a complex
with v-Abl. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate affinity
and selectivity, preferentially to PxxP motifs. They
play versatile and diverse roles in the cell including
the regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 55
Score = 29.3 bits (66), Expect = 0.28
Identities = 14/50 (28%), Positives = 23/50 (46%), Gaps = 2/50 (4%)
Query: 107 IAAYPYDSTEPGDLTFNQDEVIYVTKKENDWWT--GTIGDRTGLFPSNYV 154
+A + S P +L+ E + + ++ DWW + R PSNYV
Sbjct: 3 VALCNFPSGGPTELSIRMGEQLTILSEDGDWWKVSSAVTGRECYIPSNYV 52
>gnl|CDD|213005 cd12072, SH3_FNBP1L, Src Homology 3 domain of Formin Binding
Protein 1-Like. FormiN Binding Protein 1-Like (FNBP1L),
also known as Toca-1 (Transducer of Cdc42-dependent
actin assembly), forms a complex with neural
Wiskott-Aldrich syndrome protein (N-WASP). The
FNBP1L/N-WASP complex induces the formation of filopodia
and endocytic vesicles. FNBP1L is required for
Cdc42-induced actin assembly and is essential for
autophagy of intracellular pathogens. It contains an
N-terminal F-BAR domain, a central Cdc42-binding HR1
domain, and a C-terminal SH3 domain. The SH3 domain of
the related protein, CIP4, associates with Gapex-5, a
Rab31 GEF. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate affinity
and selectivity, preferentially to PxxP motifs. They
play versatile and diverse roles in the cell including
the regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 57
Score = 29.6 bits (66), Expect = 0.29
Identities = 15/50 (30%), Positives = 26/50 (52%), Gaps = 3/50 (6%)
Query: 108 AAYPYDSTEPGDLTFNQDEVIYVTKKEN-DWWTGTIGD--RTGLFPSNYV 154
A YP+D + G L + EV+Y+ +++ D WT G P++Y+
Sbjct: 5 ALYPFDGSNEGTLAMKEGEVLYIIEEDKGDGWTRARKQNGEEGYVPTSYI 54
>gnl|CDD|212848 cd11915, SH3_Irsp53, Src Homology 3 domain of Insulin Receptor
tyrosine kinase Substrate p53. IRSp53 is also known as
BAIAP2 (Brain-specific Angiogenesis Inhibitor
1-Associated Protein 2). It is a scaffolding protein
that takes part in many signaling pathways including
Cdc42-induced filopodia formation, Rac-mediated
lamellipodia extension, and spine morphogenesis. IRSp53
exists as multiple splicing variants that differ mainly
at the C-termini. One variant (T-form) is expressed
exclusively in human breast cancer cells. The gene
encoding IRSp53 is a putative susceptibility gene for
Gilles de la Tourette syndrome. IRSp53 can also mediate
the recruitment of effector proteins Tir and EspFu,
which regulate host cell actin reorganization, to
bacterial attachment sites. It contains an N-terminal
IMD, a CRIB (Cdc42 and Rac interactive binding motif),
an SH3 domain, and a WASP homology 2 (WH2) actin-binding
motif at the C-terminus. The SH3 domain of IRSp53 has
been shown to bind the proline-rich C-terminus of EspFu.
SH3 domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 59
Score = 29.6 bits (66), Expect = 0.31
Identities = 17/49 (34%), Positives = 25/49 (51%), Gaps = 4/49 (8%)
Query: 231 SSEQLSLSRGQLI-MIRKKTTTGWWEGELQAKGKKRQVGWFPASYVKVM 278
+S LS G I ++ + GW GE + K + GWFP SY +V+
Sbjct: 14 NSTLLSFKEGDYITLLVPEARDGWHYGECE---KTKMRGWFPFSYTRVL 59
>gnl|CDD|212833 cd11900, SH3_Nck1_1, First Src Homology 3 domain of Nck1 adaptor
protein. Nck1 (also called Nckalpha) plays a crucial
role in connecting signaling pathways of tyrosine kinase
receptors and important effectors in actin dynamics and
cytoskeletal remodeling. It binds and activates RasGAP,
resulting in the downregulation of Ras. It is also
involved in the signaling of endothilin-mediated
inhibition of cell migration. Nck adaptor proteins
regulate actin cytoskeleton dynamics by linking
proline-rich effector molecules to protein tyrosine
kinases and phosphorylated signaling intermediates. They
contain three SH3 domains and a C-terminal SH2 domain.
They function downstream of the PDGFbeta receptor and
are involved in Rho GTPase signaling and actin dynamics.
Vertebrates contain two Nck adaptor proteins: Nck1 (also
called Nckalpha) and Nck2, which show partly overlapping
functions but also bind distinct targets. The first SH3
domain of Nck1 binds the PxxDY sequence in the CD3e
cytoplasmic tail; this binding inhibits phosphorylation
by Src kinases, resulting in the downregulation of TCR
surface expression. SH3 domains are protein interaction
domains that usually bind to proline-rich ligands with
moderate affinity and selectivity, preferentially a PxxP
motif. They play versatile and diverse roles in the cell
including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 59
Score = 29.3 bits (65), Expect = 0.33
Identities = 13/49 (26%), Positives = 25/49 (51%), Gaps = 1/49 (2%)
Query: 107 IAAYPYDSTEPGDLTFNQDEVIYVTKKENDWW-TGTIGDRTGLFPSNYV 154
+A + Y + + +L ++E +++ WW ++TG PSNYV
Sbjct: 6 VAKFDYVAQQDQELDIKKNERLWLLDDSKSWWRVRNAMNKTGFVPSNYV 54
>gnl|CDD|212845 cd11912, SH3_Bzz1_1, First Src Homology 3 domain of Bzz1 and
similar domains. Bzz1 (or Bzz1p) is a
WASP/Las17-interacting protein involved in endocytosis
and trafficking to the vacuole. It physically interacts
with type I myosins and functions in the early steps of
endocytosis. Together with other proteins, it induces
membrane scission in yeast. Bzz1 contains an N-terminal
F-BAR (FES-CIP4 Homology and Bin/Amphiphysin/Rvs), a
central coiled-coil, and two C-terminal SH3 domains.
This model represents the first C-terminal SH3 domain.
SH3 domains are protein interaction domains that bind
to proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 55
Score = 29.1 bits (66), Expect = 0.37
Identities = 14/53 (26%), Positives = 27/53 (50%), Gaps = 2/53 (3%)
Query: 42 RAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGW-LAGELRGQTGWFPESYVE 93
+ +Y++ + DE+S G+ + V ++ + GW G+ G P SY+E
Sbjct: 3 KVLYDYTASGDDEVSISEGEEVTV-LEPDDGSGWTKVRNGSGEEGLVPTSYIE 54
>gnl|CDD|212844 cd11911, SH3_CIP4-like, Src Homology 3 domain of Cdc42-Interacting
Protein 4. This subfamily is composed of
Cdc42-Interacting Protein 4 (CIP4), Formin Binding
Protein 17 (FBP17), FormiN Binding Protein 1-Like
(FNBP1L), and similar proteins. CIP4 and FNBP1L are
Cdc42 effectors that bind Wiskott-Aldrich syndrome
protein (WASP) and function in endocytosis. CIP4 and
FBP17 bind to the Fas ligand and may be implicated in
the inflammatory response. CIP4 may also play a role in
phagocytosis. It functions downstream of Cdc42 in
PDGF-dependent actin reorganization and cell migration,
and also regulates the activity of PDGFRbeta. It uses
Src as a substrate in regulating the invasiveness of
breast tumor cells. CIP4 may also play a role in the
pathogenesis of Huntington's disease. Members of this
subfamily typically contain an N-terminal F-BAR
(FES-CIP4 Homology and Bin/Amphiphysin/Rvs) domain, a
central Cdc42-binding HR1 domain, and a C-terminal SH3
domain. The SH3 domain of CIP4 associates with Gapex-5,
a Rab31 GEF. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate affinity
and selectivity, preferentially to PxxP motifs. They
play versatile and diverse roles in the cell including
the regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 55
Score = 29.1 bits (66), Expect = 0.39
Identities = 15/59 (25%), Positives = 26/59 (44%), Gaps = 5/59 (8%)
Query: 220 IATVLAPYTATSSEQLSLSRG-QLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVKV 277
T L + TS LS+ G L+++ + GW + + G+ P SY++V
Sbjct: 1 TCTALYDFDGTSEGTLSMEEGEILLVLEEDGGDGW----TRVRKNNGDEGYVPTSYIEV 55
Score = 27.2 bits (61), Expect = 1.5
Identities = 17/55 (30%), Positives = 31/55 (56%), Gaps = 6/55 (10%)
Query: 42 RAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELR---GQTGWFPESYVE 93
A+Y+F + LS + G+I++V ++++ GW +R G G+ P SY+E
Sbjct: 3 TALYDFDGTSEGTLSMEEGEILLV-LEEDGGDGWT--RVRKNNGDEGYVPTSYIE 54
Score = 26.1 bits (58), Expect = 4.8
Identities = 14/51 (27%), Positives = 24/51 (47%), Gaps = 3/51 (5%)
Query: 107 IAAYPYDSTEPGDLTFNQDEVIYVTKK-ENDWWTGT--IGDRTGLFPSNYV 154
A Y +D T G L+ + E++ V ++ D WT G P++Y+
Sbjct: 3 TALYDFDGTSEGTLSMEEGEILLVLEEDGGDGWTRVRKNNGDEGYVPTSYI 53
>gnl|CDD|212794 cd11860, SH3_DLG5, Src homology 3 domain of Disks Large homolog
5. DLG5 is a multifunctional scaffold protein that is
located at sites of cell-cell contact and is involved
in the maintenance of cell shape and polarity.
Mutations in the DLG5 gene are associated with Crohn's
disease (CD) and inflammatory bowel disease (IBD). DLG5
is a member of the MAGUK (membrane-associated guanylate
kinase) protein family, which is characterized by the
presence of a core of three domains: PDZ, SH3, and
guanylate kinase (GuK). The GuK domain in MAGUK
proteins is enzymatically inactive; instead, the domain
mediates protein-protein interactions and associates
intramolecularly with the SH3 domain. DLG5 contains 4
PDZ domains as well as an N-terminal domain of unknown
function. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP
motifs. They play versatile and diverse roles in the
cell including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 63
Score = 28.8 bits (65), Expect = 0.49
Identities = 11/24 (45%), Positives = 17/24 (70%)
Query: 42 RAIYEFVSRNGDELSFQPGDIIMV 65
RA+++ + N DELSF+ DI+ V
Sbjct: 3 RALFDRSAENEDELSFKKDDILYV 26
>gnl|CDD|212782 cd11848, SH3_SLAP-like, Src homology 3 domain of Src-Like Adaptor
Proteins. SLAPs are adaptor proteins with limited
similarity to Src family tyrosine kinases. They contain
an N-terminal SH3 domain followed by an SH2 domain, and
a unique C-terminal sequence. They function in
regulating the signaling, ubiquitination, and
trafficking of T-cell receptor (TCR) and B-cell receptor
(BCR) components. Vertebrates contain two SLAPs, named
SLAP (or SLA1) and SLAP2 (or SLA2). SLAP has been shown
to interact with the EphA receptor, EpoR, Lck, PDGFR,
Syk, CD79a, among others, while SLAP2 interacts with
CSF1R. Both SLAPs interact with c-Cbl, LAT, CD247, and
Zap70. SLAP modulates TCR surface expression levels as
well as surface and total BCR levels. As an adaptor to
c-Cbl, SLAP increases the ubiquitination, intracellular
retention, and targeted degradation of the BCR complex
components. SLAP2 plays a role in c-Cbl-dependent
regulation of CSF1R, a tyrosine kinase important for
myeloid cell growth and differentiation. The SH3 domain
of SLAP forms a complex with v-Abl. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 55
Score = 28.3 bits (63), Expect = 0.65
Identities = 14/50 (28%), Positives = 21/50 (42%), Gaps = 2/50 (4%)
Query: 107 IAAYPYDSTEPGDLTFNQDEVIYVTKKENDWWT--GTIGDRTGLFPSNYV 154
+A Y S P +L+ E + + E DWW + R PS +V
Sbjct: 3 VALGDYPSGGPAELSLRLGEPLTIVSDEGDWWKVLSEVTGRESYIPSVHV 52
>gnl|CDD|212786 cd11852, SH3_Kalirin_1, First Src homology 3 domain of the RhoGEF
kinase, Kalirin. Kalirin, also called Duo, Duet, or
TRAD, is a large neuronal dual Rho guanine nucleotide
exchange factor (RhoGEF) that activates Rac1, RhoA, and
RhoG using two RhoGEF domains. Kalirin exists in many
isoforms generated by alternative splicing and the use
of multiple promoters; the major isoforms are kalirin-7,
-9, and -12, which differ at their C-terminal ends.
Kalirin-12, the longest isoform, contains an N-terminal
Sec14p domain, spectrin-like repeats, two RhoGEF
domains, two SH3 domains, as well as Ig, FNIII, and
kinase domains at the C-terminal end. Kalirin-7 contains
only a single RhoGEF domain and does not contain an SH3
domain. Kalirin, through its many isoforms, interacts
with many different proteins and is able to localize to
different locations within the cell. It influences
neurite initiation, axon growth, dendritic
morphogenesis, vesicle trafficking, neuronal
maintenance, and neurodegeneration. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 62
Score = 28.5 bits (64), Expect = 0.68
Identities = 10/23 (43%), Positives = 18/23 (78%)
Query: 219 EIATVLAPYTATSSEQLSLSRGQ 241
E+ V+ + ATSS++L++S+GQ
Sbjct: 1 ELTVVIEDFEATSSQELTVSKGQ 23
>gnl|CDD|212886 cd11953, SH3_ASPP2, Src Homology 3 (SH3) domain of Apoptosis
Stimulating of p53 protein 2. ASPP2 is the full length
form of the previously-identified tumor supressor,
p53-binding protein 2 (p53BP2). ASPP2 activates the
apoptotic function of the p53 family of tumor
suppressors (p53, p63, and p73). It plays a central role
in regulating apoptosis and cell growth; ASPP2-deficient
mice show postnatal death. Downregulated expression of
ASPP2 is frequently found in breast tumors, lung cancer,
and diffuse large B-cell lymphoma where it is correlated
with a poor clinical outcome. ASPP2 contains a
proline-rich region, four ankyrin (ANK) repeats, and an
SH3 domain at its C-terminal half. The SH3 domain and
the ANK repeats of ASPP2 contribute to the p53 binding
site; they bind to the DNA binding domain of p53. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 57
Score = 27.2 bits (60), Expect = 1.7
Identities = 11/49 (22%), Positives = 25/49 (51%), Gaps = 4/49 (8%)
Query: 108 AAYPYDSTEPGDLTFNQDEVIYVTKKEN----DWWTGTIGDRTGLFPSN 152
A + Y+ +L+F + + + + ++E+ +WW + D+ G P N
Sbjct: 5 ALWDYEGESDDELSFKEGDCMTILRREDEDETEWWWARLNDKEGYVPRN 53
>gnl|CDD|213011 cd12078, SH3_Tks4_3, Third Src homology 3 domain of Tyrosine
kinase substrate with four SH3 domains. Tks4, also
called SH3 and PX domain-containing protein 2B
(SH3PXD2B) or HOFI, is a Src substrate and scaffolding
protein that plays an important role in the formation
of podosomes and invadopodia, the dynamic actin-rich
structures that are related to cell migration and
cancer cell invasion. It is required in the formation
of functional podosomes, EGF-induced membrane ruffling,
and lamellipodia generation. It plays an important role
in cellular attachment and cell spreading. Tks4 is
essential for the localization of MT1-MMP
(membrane-type 1 matrix metalloproteinase) to
invadopodia. It contains an N-terminal Phox homology
(PX) domain and four SH3 domains. This model
characterizes the third SH3 domain of Tks4. SH3 domains
are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 53
Score = 27.3 bits (60), Expect = 1.7
Identities = 15/53 (28%), Positives = 27/53 (50%), Gaps = 2/53 (3%)
Query: 41 YRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVE 93
Y I +F + D +SFQ G + V V + GW ++ + GW P ++++
Sbjct: 2 YYTIADFQTTIPDGISFQAG--LKVEVIEKNLSGWWYIQIEDKEGWAPATFID 52
>gnl|CDD|212797 cd11863, SH3_CACNB, Src Homology 3 domain of Voltage-dependent
L-type calcium channel subunit beta. Voltage-dependent
calcium channels (Ca(V)s) are multi-protein complexes
that regulate the entry of calcium into cells. They
impact muscle contraction, neuronal migration, hormone
and neurotransmitter release, and the activation of
calcium-dependent signaling pathways. They are composed
of four subunits: alpha1, alpha2delta, beta, and gamma.
The beta subunit is a soluble and intracellular protein
that interacts with the transmembrane alpha1 subunit. It
facilitates the trafficking and proper localization of
the alpha1 subunit to the cellular plasma membrane.
Vertebrates contain four different beta subunits from
distinct genes (beta1-4); each exists as multiple splice
variants. All are expressed in the brain while other
tissues show more specific expression patterns. The beta
subunits show similarity to MAGUK (membrane-associated
guanylate kinase) proteins in that they contain SH3 and
inactive guanylate kinase (GuK) domains; however, they
do not appear to contain a PDZ domain. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 62
Score = 27.2 bits (61), Expect = 1.8
Identities = 16/51 (31%), Positives = 25/51 (49%), Gaps = 5/51 (9%)
Query: 106 YIAAYPYDSTEPG-DLTFNQDEVIYVTKK-ENDWWTGTI---GDRTGLFPS 151
Y + DS PG ++F + +++ +K NDWW G + G G PS
Sbjct: 9 YDGSLDDDSPVPGYAVSFEAKDFLHIKEKYNNDWWIGRLVKEGCDIGFIPS 59
>gnl|CDD|212951 cd12018, SH3_Tks4_4, Fourth (C-terminal) Src homology 3 domain of
Tyrosine kinase substrate with four SH3 domains. Tks4,
also called SH3 and PX domain-containing protein 2B
(SH3PXD2B) or HOFI, is a Src substrate and scaffolding
protein that plays an important role in the formation of
podosomes and invadopodia, the dynamic actin-rich
structures that are related to cell migration and cancer
cell invasion. It is required in the formation of
functional podosomes, EGF-induced membrane ruffling, and
lamellipodia generation. It plays an important role in
cellular attachment and cell spreading. Tks4 is
essential for the localization of MT1-MMP (membrane-type
1 matrix metalloproteinase) to invadopodia. It contains
an N-terminal Phox homology (PX) domain and four SH3
domains. This model characterizes the fourth
(C-terminal) SH3 domain of Tks4. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 56
Score = 27.2 bits (60), Expect = 2.0
Identities = 12/41 (29%), Positives = 25/41 (60%), Gaps = 1/41 (2%)
Query: 236 SLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVK 276
S G + +R+K ++GWW ++ + G + GW P++Y++
Sbjct: 16 SFKEGTVFEVREKNSSGWWFCKVLSGGPVWE-GWIPSNYLR 55
>gnl|CDD|187881 cd09750, Csa5_I-A, CRISPR/Cas system-associated protein Csa5.
CRISPR (Clustered Regularly Interspaced Short
Palindromic Repeats) and associated Cas proteins
comprise a system for heritable host defense by
prokaryotic cells against phage and other foreign DNA;
Predicted transcriptional regulator of CRISPR/Cas
system; contains DNA binding HTH domain; also known as
Csa5 family.
Length = 101
Score = 28.2 bits (63), Expect = 2.1
Identities = 15/57 (26%), Positives = 26/57 (45%)
Query: 47 FVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVEPCDETGEVVP 103
+V R G+ LS + + ++ ++ G GE+R QTG Y+ + VV
Sbjct: 10 YVDRIGNALSKEAVEKVLYEAQRIFRSGIERGEIRLQTGENGRRYIAEKEGEYIVVG 66
>gnl|CDD|212812 cd11879, SH3_Bem1p_2, Second Src Homology 3 domain of Bud
emergence protein 1 and similar domains. Members of
this subfamily bear similarity to Saccharomyces
cerevisiae Bem1p, containing two Src Homology 3 (SH3)
domains at the N-terminus, a central PX domain, and a
C-terminal PB1 domain. Bem1p is a scaffolding protein
that is critical for proper Cdc42p activation during
bud formation in yeast. During budding and mating,
Bem1p migrates to the plasma membrane where it can
serve as an adaptor for Cdc42p and some other proteins.
Bem1p also functions as an effector of the G1 cyclin
Cln3p and the cyclin-dependent kinase Cdc28p in
promoting vacuolar fusion. SH3 domains bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs; they play a
role in the regulation of enzymes by intramolecular
interactions, changing the subcellular localization of
signal pathway components and mediate multiprotein
complex assemblies.
Length = 56
Score = 26.9 bits (60), Expect = 2.1
Identities = 17/52 (32%), Positives = 23/52 (44%), Gaps = 5/52 (9%)
Query: 45 YEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAG---ELRGQTGWFPESYVE 93
Y+F + DEL + GD I++ N E W G G P S+VE
Sbjct: 6 YDFKAERPDELDAKAGDAIIICAHSNYE--WFVAKPIGRLGGPGLIPVSFVE 55
>gnl|CDD|212726 cd11792, SH3_Fut8, Src homology 3 domain of
Alpha1,6-fucosyltransferase (Fut8). Fut8 catalyzes the
alpha1,6-linkage of a fucose residue from a donor
substrate to N-linked oligosaccharides on glycoproteins
in a process called core fucosylation, which is crucial
for growth factor receptor-mediated biological
functions. Fut8-deficient mice show severe growth
retardation, early death, and a pulmonary
emphysema-like phenotype. Fut8 is also implicated to
play roles in aging and cancer metastasis. It contains
an N-terminal coiled-coil domain, a catalytic domain,
and a C-terminal SH3 domain. The SH3 domain of Fut8 is
located in the lumen and its role in glycosyl transfer
is unclear. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP
motifs. They play versatile and diverse roles in the
cell including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 55
Score = 26.4 bits (59), Expect = 3.3
Identities = 12/24 (50%), Positives = 14/24 (58%)
Query: 42 RAIYEFVSRNGDELSFQPGDIIMV 65
AIY RN DE+ + GDII V
Sbjct: 3 VAIYPHKPRNHDEIELRVGDIIGV 26
>gnl|CDD|236805 PRK10952, PRK10952, glycine betaine transporter membrane protein;
Provisional.
Length = 355
Score = 28.5 bits (64), Expect = 4.0
Identities = 10/22 (45%), Positives = 11/22 (50%)
Query: 15 NAWDNAPAADTWTASTDPTGVS 36
N WD PAAD+ S D G
Sbjct: 7 NPWDTTPAADSAAQSADAWGTP 28
>gnl|CDD|212813 cd11880, SH3_Caskin, Src Homology 3 domain of CASK interacting
protein. Caskin proteins are multidomain adaptor
proteins that contain six ankyrin repeats, a single SH3
domain, tandem sterile alpha motif (SAM) domains, and a
long disordered proline-rich region. There are two
Caskin proteins called Caskin1 and Caskin2. Caskin1
binds to the multidomain scaffolding protein CASK
through the CaM domain in competition with
Munc-interacting protein 1 (Mint1). CASK participates in
one of two evolutionarily conserved tripartite complexes
containing either Mint1 and Velis or Caskin1 and Velis.
Caskin1 may play a role in infantile myoclonic epilepsy.
There is not much known about Caskin2; despite sharing a
domain architecture with Caskin1, Caskin2 does not bind
CASK. SH3 domains bind to proline-rich ligands with
moderate affinity and selectivity, preferentially to
PxxP motifs; they play a role in the regulation of
enzymes by intramolecular interactions, changing the
subcellular localization of signal pathway components
and mediate multiprotein complex assemblies.
Length = 61
Score = 26.4 bits (58), Expect = 4.4
Identities = 13/44 (29%), Positives = 24/44 (54%), Gaps = 1/44 (2%)
Query: 235 LSLSRGQLIMIRKKTTTGWWEGELQAKGK-KRQVGWFPASYVKV 277
L++ G +I + ++ G W+G + +VG+FP S V+V
Sbjct: 18 LNVRAGDIITVLEQHPDGRWKGHIHDNQTGNDRVGYFPPSLVEV 61
>gnl|CDD|213012 cd12079, SH3_Tks5_3, Third Src homology 3 domain of Tyrosine
kinase substrate with five SH3 domains. Tks5, also
called SH3 and PX domain-containing protein 2A
(SH3PXD2A) or Five SH (FISH), is a scaffolding protein
and Src substrate that is localized in podosomes, which
are electron-dense structures found in Src-transformed
fibroblasts, osteoclasts, macrophages, and some
invasive cancer cells. It binds and regulates some
members of the ADAMs family of transmembrane
metalloproteases, which function as sheddases and
mediators of cell and matrix interactions. It is
required for podosome formation, degradation of the
extracellular matrix, and cancer cell invasion. Tks5
contains an N-terminal Phox homology (PX) domain and
five SH3 domains. This model characterizes the third
SH3 domain of Tks5. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP
motifs. They play versatile and diverse roles in the
cell including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 54
Score = 26.2 bits (57), Expect = 4.7
Identities = 18/53 (33%), Positives = 26/53 (49%), Gaps = 2/53 (3%)
Query: 41 YRAIYEFVSRNGDELSFQPGDIIMVPVKQNAEPGWLAGELRGQTGWFPESYVE 93
Y I EF S D +SF+ G V K + GW ++ + GW P SY++
Sbjct: 3 YYTIAEFQSCISDGISFRGGQKAEVIEKNSG--GWWYVQIGEKEGWAPSSYID 53
>gnl|CDD|212913 cd11980, SH3_VAV2_1, First Src homology 3 domain of VAV2 protein.
VAV2 is widely expressed and functions as a guanine
nucleotide exchange factor (GEF) for RhoA, RhoB and RhoG
and also activates Rac1 and Cdc42. It is implicated in
many cellular and physiological functions including
blood pressure control, eye development, neurite
outgrowth and branching, EGFR endocytosis and
degradation, and cell cluster morphology, among others.
It has been reported to associate with Nek3. VAV
proteins contain several domains that enable their
function: N-terminal calponin homology (CH), acidic,
RhoGEF (also called Dbl-homologous or DH), Pleckstrin
Homology (PH), C1 (zinc finger), SH2, and two SH3
domains. The SH3 domain of VAV is involved in the
localization of proteins to specific sites within the
cell, by interacting with proline-rich sequences within
target proteins. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP motifs.
They play versatile and diverse roles in the cell
including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 60
Score = 26.1 bits (57), Expect = 4.8
Identities = 15/43 (34%), Positives = 25/43 (58%), Gaps = 4/43 (9%)
Query: 235 LSLSRGQLI-MIRKKTTTGWWEGELQAKGKKRQVGWFPASYVK 276
L+ G +I ++R + WWEG L + ++ G+FP+S VK
Sbjct: 20 LTFQTGDVIELLRGDPDSPWWEGRLL---QTKKSGYFPSSSVK 59
>gnl|CDD|213013 cd12080, SH3_MPP1, Src Homology 3 domain of Membrane Protein,
Palmitoylated 1 (or MAGUK p55 subfamily member 1).
MPP1, also called 55 kDa erythrocyte membrane protein
(p55), is a ubiquitously-expressed scaffolding protein
that plays roles in regulating neutrophil polarity, cell
shape, hair cell development, and neural development and
patterning of the retina. It was originally identified
as an erythrocyte protein that stabilizes the actin
cytoskeleton to the plasma membrane by forming a complex
with 4.1R protein and glycophorin C. MPP1 is one of
seven vertebrate homologs of the Drosophila Stardust
protein, which is required in establishing cell
polarity, and it contains the three domains
characteristic of MAGUK (membrane-associated guanylate
kinase) proteins: PDZ, SH3, and guanylate kinase (GuK).
In addition, it also contains the Hook (Protein 4.1
Binding) motif in between the SH3 and GuK domains. The
GuK domain in MAGUK proteins is enzymatically inactive;
instead, the domain mediates protein-protein
interactions and associates intramolecularly with the
SH3 domain. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate affinity
and selectivity, preferentially to PxxP motifs. They
play versatile and diverse roles in the cell including
the regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 62
Score = 26.1 bits (57), Expect = 5.0
Identities = 9/29 (31%), Positives = 15/29 (51%)
Query: 235 LSLSRGQLIMIRKKTTTGWWEGELQAKGK 263
L G +I I K + WW+G ++ G+
Sbjct: 23 LKFQTGDIIQIINKDDSNWWQGRVEGSGE 51
>gnl|CDD|183147 PRK11465, PRK11465, putative mechanosensitive channel protein;
Provisional.
Length = 741
Score = 28.6 bits (64), Expect = 5.2
Identities = 12/40 (30%), Positives = 16/40 (40%)
Query: 159 AQTPAAAVDPTPATPVVKDTPTKSEGVTRTSSVSGGSRSG 198
A TP A P P + + T + VT S G + S
Sbjct: 73 AATPPAEPVPKIVPPTLVEEKTVLQNVTEVSRHYGEALSA 112
>gnl|CDD|199215 cd10315, CBM41_pullulanase, Family 41 Carbohydrate-Binding Module
from pullulanase-like enzymes. Pullulanases (EC
3.2.1.41) are a group of starch-debranching enzymes,
catalyzing the hydrolysis of the alpha-1,6-glucosidic
linkages of alpha-glucans, preferentially pullulan.
Pullulan is a polysaccharide in which alpha-1,4 linked
maltotriosyl units are combined via an alpha-1,6
linkage. These enzymes are of importance in the starch
industry, where they are used to hydrolyze amylopectin
starch. Pullulanases consist of multiple distinct
domains, including a catalytic domain belonging to the
glycoside hydrolase (GH) family 13 and
carbohydrate-binding modules (CBM), including CBM41.
Length = 100
Score = 26.9 bits (60), Expect = 5.7
Identities = 8/31 (25%), Positives = 11/31 (35%)
Query: 11 SWGDNAWDNAPAADTWTASTDPTGVSEYRRY 41
WG W + W + TG +Y Y
Sbjct: 16 GWGLWLWGDGACPTWWGGAYAFTGDDDYGAY 46
>gnl|CDD|212947 cd12014, SH3_RIM-BP_1, First Src homology 3 domain of
Rab3-interacting molecules (RIMs) binding proteins.
RIMs binding proteins (RBPs, RIM-BPs) associate with
calcium channels present in photoreceptors, neurons, and
hair cells; they interact simultaneously with specific
calcium channel subunits, and active zone proteins, RIM1
and RIM2. RIMs are part of the matrix at the presynaptic
active zone and are associated with synaptic vesicles
through their interaction with the small GTPase Rab3.
RIM-BPs play a role in regulating synaptic transmission
by serving as adaptors and linking calcium channels with
the synaptic vesicle release machinery. RIM-BPs contain
three SH3 domains and two to three fibronectin III
repeats. Invertebrates contain one, while vertebrates
contain at least two RIM-BPs, RIM-BP1 and RIM-BP2.
RIM-BP1 is also called peripheral-type benzodiazapine
receptor associated protein 1 (PRAX-1). Mammals contain
a third protein, RIM-BP3. RIM-BP1 and RIM-BP2 are
predominantly expressed in the brain where they display
overlapping but distinct expression patterns, while
RIM-BP3 is almost exclusively expressed in the testis
and is essential in spermiogenesis. The SH3 domains of
RIM-BPs bind to the PxxP motifs of RIM1, RIM2, and
L-type (alpha1D) and N-type (alpha1B) calcium channel
subunits. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate affinity
and selectivity. They play versatile and diverse roles
in the cell including the regulation of enzymes,
changing the subcellular localization of signaling
pathway components, and mediating the formation of
multiprotein complex assemblies.
Length = 62
Score = 25.8 bits (57), Expect = 6.1
Identities = 17/59 (28%), Positives = 28/59 (47%), Gaps = 10/59 (16%)
Query: 106 YIAAYPYDSTEPG-------DLTFNQDEVIYV--TKKENDWWTGTIGD-RTGLFPSNYV 154
++A Y Y+ +L N + +YV E+ ++ G + D R GL PSN+V
Sbjct: 2 FVARYSYNPLRDSPNENPEAELPLNAGDYVYVYGDMDEDGFYEGELLDGRRGLVPSNFV 60
>gnl|CDD|212952 cd12019, SH3_Tks5_4, Fourth Src homology 3 domain of Tyrosine
kinase substrate with five SH3 domains. Tks5, also
called SH3 and PX domain-containing protein 2A
(SH3PXD2A) or Five SH (FISH), is a scaffolding protein
and Src substrate that is localized in podosomes, which
are electron-dense structures found in Src-transformed
fibroblasts, osteoclasts, macrophages, and some invasive
cancer cells. It binds and regulates some members of the
ADAMs family of transmembrane metalloproteases, which
function as sheddases and mediators of cell and matrix
interactions. It is required for podosome formation,
degradation of the extracellular matrix, and cancer cell
invasion. Tks5 contains an N-terminal Phox homology (PX)
domain and five SH3 domains. This model characterizes
the fourth SH3 domain of Tks5. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 53
Score = 25.3 bits (55), Expect = 7.6
Identities = 14/53 (26%), Positives = 25/53 (47%), Gaps = 1/53 (1%)
Query: 105 YYIAAYPYDSTEPGDLTFNQD-EVIYVTKKENDWWTGTIGDRTGLFPSNYVVP 156
Y+ Y + +++F EV + K+E+ WW G+ G PS+Y+
Sbjct: 1 SYMTTSAYQKVQDSEISFPAGVEVEVLEKQESGWWYVRFGELEGWAPSHYLEL 53
>gnl|CDD|107222 cd06465, p23_hB-ind1_like, p23_like domain found in human (h)
butyrate-induced transcript 1 (B-ind1) and similar
proteins. hB-ind1 participates in signaling by the small
GTPase Rac1. It binds to Rac1 and enhances different
Rac1 effects including activation of nuclear factor (NF)
kappaB and activation of c-Jun N-terminal kinase (JNK).
hB-ind1 also plays a part in the RNA replication and
particle production of Hepatitis C virus (HCV) through
its interaction with heat shock protein Hsp90, HCV
nonstructural protein 5A (NS5A), and the immunophilin
FKBP8. hB-ind1 is upregulated in the outer layer of
Chinese hamster V79 cells grown as multicell spheroids,
versus in the same cells grown as monolayers. This group
includes the Saccharomyces cerevisiae Sba1, a
co-chaperone of the Hsp90. Sba1 has been shown to be is
required for telomere length maintenance, and may
modulate telomerase DNA-binding activity.
Length = 108
Score = 26.4 bits (59), Expect = 8.1
Identities = 11/46 (23%), Positives = 18/46 (39%), Gaps = 8/46 (17%)
Query: 232 SEQLSLSRGQLIMIRKKTTTGWWEGELQAKGKKRQVGWFPASYVKV 277
S+ R ++RKK +W + KGK ++KV
Sbjct: 61 SKYKVTGRQIEFVLRKKEAGEYWPRLTKEKGKL--------PWLKV 98
>gnl|CDD|235673 PRK06018, PRK06018, putative acyl-CoA synthetase; Provisional.
Length = 542
Score = 27.8 bits (62), Expect = 8.3
Identities = 20/61 (32%), Positives = 29/61 (47%), Gaps = 7/61 (11%)
Query: 13 GDNAW----DNAPAADTWTAST--DPTGVSEYRRYRAIYEFVSRNGDELSFQPGDIIMVP 66
GD AW +N A +T+ T DP GV R ++ ++ NGD L D ++ P
Sbjct: 167 GDFAWKTFDENTAAGMCYTSGTTGDPKGVLYSHRSNVLHALMANNGDALGTSAADTML-P 225
Query: 67 V 67
V
Sbjct: 226 V 226
>gnl|CDD|212973 cd12040, SH3_CACNB2, Src Homology 3 domain of Voltage-dependent
L-type calcium channel subunit beta2. The beta2 subunit
of voltage-dependent calcium channels (Ca(V)s) is one of
four beta subunits present in vertebrates. It is
expressed in the heart and is present in specific
neuronal cells including cerebellar Purkinje cells,
hippocampal pyramidal neurons, and photoreceptors.
Knockout of the beta2 gene in mice results in embryonic
lethality, demonstrating its importance in development.
Ca(V)s are multi-protein complexes that regulate the
entry of calcium into cells. They impact muscle
contraction, neuronal migration, hormone and
neurotransmitter release, and the activation of
calcium-dependent signaling pathways. They are composed
of four subunits: alpha1, alpha2delta, beta, and gamma.
The beta subunit is a soluble and intracellular protein
that interacts with the transmembrane alpha1 subunit. It
facilitates the trafficking and proper localization of
the alpha1 subunit to the cellular plasma membrane.
Vertebrates contain four different beta subunits from
distinct genes (beta1-4); each exists as multiple splice
variants. All are expressed in the brain while other
tissues show more specific expression patterns. The beta
subunits show similarity to MAGUK (membrane-associated
guanylate kinase) proteins in that they contain SH3 and
inactive guanylate kinase (GuK) domains; however, they
do not appear to contain a PDZ domain. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 69
Score = 25.4 bits (55), Expect = 9.4
Identities = 18/51 (35%), Positives = 26/51 (50%), Gaps = 5/51 (9%)
Query: 106 YIAAYPYDSTEPGD-LTFNQDEVIYVTKK-ENDWWTGTI---GDRTGLFPS 151
Y AA+ D PG ++F + ++V +K NDWW G + G G PS
Sbjct: 14 YSAAHEDDVPVPGMAISFEAKDFLHVKEKFNNDWWIGRLVKEGCEIGFIPS 64
>gnl|CDD|237208 PRK12795, fliM, flagellar motor switch protein FliM; Reviewed.
Length = 388
Score = 27.3 bits (61), Expect = 9.8
Identities = 11/58 (18%), Positives = 22/58 (37%), Gaps = 8/58 (13%)
Query: 14 DNAWDNAPAADTWTASTDPTGVSEYRRYRAIYEFVSRNGDELSFQPGDIIMVPVKQNA 71
D+ W+ A + W + V + E L+ + GD +M+ + +A
Sbjct: 288 DSIWEGHLATEIWQTDVEVDAV--------LDEQTLPLKRVLNLKVGDTLMLDARPDA 337
Database: CDD.v3.10
Posted date: Mar 20, 2013 7:55 AM
Number of letters in database: 10,937,602
Number of sequences in database: 44,354
Lambda K H
0.311 0.130 0.401
Gapped
Lambda K H
0.267 0.0630 0.140
Matrix: BLOSUM62
Gap Penalties: Existence: 11, Extension: 1
Number of Sequences: 44354
Number of Hits to DB: 14,897,610
Number of extensions: 1395204
Number of successful extensions: 1989
Number of sequences better than 10.0: 1
Number of HSP's gapped: 1670
Number of HSP's successfully gapped: 701
Length of query: 290
Length of database: 10,937,602
Length adjustment: 96
Effective length of query: 194
Effective length of database: 6,679,618
Effective search space: 1295845892
Effective search space used: 1295845892
Neighboring words threshold: 11
Window for multiple hits: 40
X1: 16 ( 7.2 bits)
X2: 38 (14.6 bits)
X3: 64 (24.7 bits)
S1: 42 (21.8 bits)
S2: 58 (26.3 bits)