RPS-BLAST 2.2.26 [Sep-21-2011]
Database: CDD.v3.10
44,354 sequences; 10,937,602 total letters
Searching..................................................done
Query= psy9669
(173 letters)
>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 = 111 bits (280), Expect = 3e-33
Identities = 38/52 (73%), Positives = 47/52 (90%)
Query: 114 KFRCIVPYPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASF 165
++R IVPYPP SE ELEL+ GD+++VHKKR+DGW+KGTLQRTG+TGLFP SF
Sbjct: 1 RYRVIVPYPPQSEAELELKEGDIVFVHKKREDGWFKGTLQRTGKTGLFPGSF 52
Score = 66.3 bits (162), Expect = 2e-15
Identities = 27/54 (50%), Positives = 38/54 (70%)
Query: 59 YIAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYVAP 112
Y I PY PQ + ELEL+ G + V ++ +DGWFKGT QRT ++G+FPG++V
Sbjct: 2 YRVIVPYPPQSEAELELKEGDIVFVHKKREDGWFKGTLQRTGKTGLFPGSFVES 55
>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 = 109 bits (275), Expect = 2e-32
Identities = 43/54 (79%), Positives = 49/54 (90%)
Query: 59 YIAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYVAP 112
Y+A+YPYKPQK DELELR+G +YTVTE+CQDGWFKGTS RT +SGVFPGNYV P
Sbjct: 2 YVALYPYKPQKPDELELRKGEMYTVTEKCQDGWFKGTSLRTGQSGVFPGNYVQP 55
Score = 53.2 bits (128), Expect = 2e-10
Identities = 26/59 (44%), Positives = 38/59 (64%), Gaps = 6/59 (10%)
Query: 109 YVAPAKFRCIVPYPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFMK 167
YVA + PY P ELELR G++ V +K DGW+KGT RTG++G+FP ++++
Sbjct: 2 YVA------LYPYKPQKPDELELRKGEMYTVTEKCQDGWFKGTSLRTGQSGVFPGNYVQ 54
>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 = 95.8 bits (238), Expect = 6e-27
Identities = 40/54 (74%), Positives = 46/54 (85%)
Query: 59 YIAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYVAP 112
Y+A+Y YKPQK+DELELR+G +Y V E+CQDGWFKGTS RT SGVFPGNYV P
Sbjct: 3 YLALYAYKPQKNDELELRKGEMYRVIEKCQDGWFKGTSLRTGVSGVFPGNYVTP 56
Score = 48.8 bits (116), Expect = 1e-08
Identities = 22/46 (47%), Positives = 31/46 (67%)
Query: 121 YPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFM 166
Y P ELELR G++ V +K DGW+KGT RTG +G+FP +++
Sbjct: 9 YKPQKNDELELRKGEMYRVIEKCQDGWFKGTSLRTGVSGVFPGNYV 54
>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 = 92.0 bits (228), Expect = 2e-25
Identities = 39/54 (72%), Positives = 46/54 (85%)
Query: 59 YIAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYVAP 112
Y+AIYPY P+K+DELELR+G ++ V ERCQDGWFKGTS T + GVFPGNYVAP
Sbjct: 2 YVAIYPYTPRKEDELELRKGEMFLVFERCQDGWFKGTSMHTSKIGVFPGNYVAP 55
Score = 55.4 bits (133), Expect = 3e-11
Identities = 22/52 (42%), Positives = 33/52 (63%)
Query: 115 FRCIVPYPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFM 166
+ I PY P E ELELR G++ V ++ DGW+KGT T + G+FP +++
Sbjct: 2 YVAIYPYTPRKEDELELRKGEMFLVFERCQDGWFKGTSMHTSKIGVFPGNYV 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 = 90.1 bits (224), Expect = 1e-24
Identities = 33/54 (61%), Positives = 38/54 (70%)
Query: 59 YIAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYVAP 112
Y A+Y Y PQ +DELELR G + V E+C DGWF GTS+RT G FPGNYVA
Sbjct: 2 YRALYSYTPQNEDELELREGDIVYVMEKCDDGWFVGTSERTGLFGTFPGNYVAR 55
Score = 70.0 bits (172), Expect = 8e-17
Identities = 26/53 (49%), Positives = 37/53 (69%)
Query: 115 FRCIVPYPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFMK 167
+R + Y P +E ELELR GD++YV +K DDGW+ GT +RTG G FP +++
Sbjct: 2 YRALYSYTPQNEDELELREGDIVYVMEKCDDGWFVGTSERTGLFGTFPGNYVA 54
>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 = 81.9 bits (202), Expect = 2e-21
Identities = 33/54 (61%), Positives = 40/54 (74%)
Query: 59 YIAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYVAP 112
Y A+Y Y+PQ +DELELR G V ++C DGWF G S+RTQ+ G FPGNYVAP
Sbjct: 4 YKAVYQYRPQNEDELELREGDRVDVMQQCDDGWFVGVSRRTQKFGTFPGNYVAP 57
Score = 50.0 bits (119), Expect = 4e-09
Identities = 21/52 (40%), Positives = 34/52 (65%)
Query: 115 FRCIVPYPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFM 166
++ + Y P +E ELELR GD + V ++ DDGW+ G +RT + G FP +++
Sbjct: 4 YKAVYQYRPQNEDELELREGDRVDVMQQCDDGWFVGVSRRTQKFGTFPGNYV 55
>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 = 78.9 bits (194), Expect = 3e-20
Identities = 33/54 (61%), Positives = 39/54 (72%)
Query: 59 YIAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYVAP 112
Y A+Y Y PQ DDELELR G + V E+C DGWF GTS+RT++ G FPGNYV
Sbjct: 4 YQALYSYAPQNDDELELRDGDIVDVMEKCDDGWFVGTSRRTKQFGTFPGNYVKL 57
Score = 53.5 bits (128), Expect = 2e-10
Identities = 23/53 (43%), Positives = 37/53 (69%)
Query: 115 FRCIVPYPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFMK 167
++ + Y P ++ ELELR GD++ V +K DDGW+ GT +RT + G FP +++K
Sbjct: 4 YQALYSYAPQNDDELELRDGDIVDVMEKCDDGWFVGTSRRTKQFGTFPGNYVK 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 = 71.2 bits (174), Expect = 3e-17
Identities = 31/52 (59%), Positives = 38/52 (73%)
Query: 59 YIAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYV 110
+ A+Y Y P+ +DELELR G V V E+C DGWF GTS+RT+ G FPGNYV
Sbjct: 7 FQALYNYMPRNEDELELREGDVIDVMEKCDDGWFVGTSRRTKFFGTFPGNYV 58
Score = 53.5 bits (128), Expect = 3e-10
Identities = 26/54 (48%), Positives = 37/54 (68%)
Query: 115 FRCIVPYPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFMKQ 168
F+ + Y P +E ELELR GD+I V +K DDGW+ GT +RT G FP +++K+
Sbjct: 7 FQALYNYMPRNEDELELREGDVIDVMEKCDDGWFVGTSRRTKFFGTFPGNYVKR 60
>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 = 67.2 bits (165), Expect = 9e-16
Identities = 24/56 (42%), Positives = 33/56 (58%), Gaps = 1/56 (1%)
Query: 56 VPEYIAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYVA 111
P+ A+Y Y Q DEL ++G + TV E+ DGW+KG R + G+FP NYV
Sbjct: 2 GPQVRALYDYTAQDPDELSFKKGDIITVLEKSDDGWWKGRLGRGKE-GLFPSNYVE 56
Score = 62.2 bits (152), Expect = 7e-14
Identities = 22/54 (40%), Positives = 34/54 (62%), Gaps = 1/54 (1%)
Query: 114 KFRCIVPYPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFMK 167
+ R + Y EL + GD+I V +K DDGW+KG L R G+ GLFP+++++
Sbjct: 4 QVRALYDYTAQDPDELSFKKGDIITVLEKSDDGWWKGRLGR-GKEGLFPSNYVE 56
>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 = 66.7 bits (163), Expect = 1e-15
Identities = 22/54 (40%), Positives = 34/54 (62%)
Query: 59 YIAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYVAP 112
+A++ Y + +ELEL++G V + Q+GW +G S T R G+FP NYV+P
Sbjct: 2 CVALHSYSAHRPEELELQKGEGVRVLGKFQEGWLRGLSLVTGRVGIFPSNYVSP 55
Score = 50.5 bits (121), Expect = 3e-09
Identities = 18/53 (33%), Positives = 30/53 (56%), Gaps = 2/53 (3%)
Query: 116 RCIV--PYPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFM 166
C+ Y + ELEL+ G+ + V K +GW +G TGR G+FP++++
Sbjct: 1 MCVALHSYSAHRPEELELQKGEGVRVLGKFQEGWLRGLSLVTGRVGIFPSNYV 53
>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 = 65.2 bits (160), Expect = 6e-15
Identities = 22/51 (43%), Positives = 31/51 (60%), Gaps = 1/51 (1%)
Query: 59 YIAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNY 109
A+Y Y+ Q DDEL ++G + TV E+ DGW++G R G+FP NY
Sbjct: 2 ARALYDYEAQDDDELSFKKGDIITVLEKDDDGWWEGELNG-GREGLFPANY 51
Score = 64.4 bits (158), Expect = 1e-14
Identities = 22/52 (42%), Positives = 31/52 (59%), Gaps = 1/52 (1%)
Query: 114 KFRCIVPYPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASF 165
R + Y + EL + GD+I V +K DDGW++G L GR GLFPA++
Sbjct: 1 YARALYDYEAQDDDELSFKKGDIITVLEKDDDGWWEGELNG-GREGLFPANY 51
>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 = 64.6 bits (158), Expect = 9e-15
Identities = 25/56 (44%), Positives = 31/56 (55%), Gaps = 4/56 (7%)
Query: 59 YIAIYPYKPQKDDELELRRGS-VYTVTERCQ---DGWFKGTSQRTQRSGVFPGNYV 110
+YPY PQ++DELEL G +Y E DGW +GTS T SG+ P NY
Sbjct: 2 LRVLYPYTPQEEDELELVPGDYIYVSPEELDSSSDGWVEGTSWLTGCSGLLPENYT 57
Score = 58.5 bits (142), Expect = 2e-12
Identities = 24/54 (44%), Positives = 30/54 (55%), Gaps = 4/54 (7%)
Query: 116 RCIVPYPPNSEYELELRVGDLIYVHKKR----DDGWYKGTLQRTGRTGLFPASF 165
R + PY P E ELEL GD IYV + DGW +GT TG +GL P ++
Sbjct: 3 RVLYPYTPQEEDELELVPGDYIYVSPEELDSSSDGWVEGTSWLTGCSGLLPENY 56
>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 = 60.0 bits (146), Expect = 6e-13
Identities = 24/54 (44%), Positives = 30/54 (55%)
Query: 59 YIAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYVAP 112
Y A+Y Y DDE+ + G V E DGW +GT QRT +SG+ P NYV
Sbjct: 2 YRAMYDYAAADDDEVSFQEGDVIINVEIIDDGWMEGTVQRTGQSGMLPANYVEL 55
Score = 46.5 bits (111), Expect = 8e-08
Identities = 19/55 (34%), Positives = 36/55 (65%)
Query: 114 KFRCIVPYPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFMKQ 168
++R + Y + E+ + GD+I + DDGW +GT+QRTG++G+ PA++++
Sbjct: 1 RYRAMYDYAAADDDEVSFQEGDVIINVEIIDDGWMEGTVQRTGQSGMLPANYVEL 55
>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 = 59.3 bits (144), Expect = 1e-12
Identities = 22/51 (43%), Positives = 32/51 (62%), Gaps = 2/51 (3%)
Query: 60 IAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYV 110
+A+Y Y KDDEL + G + VT++ DGW++G +G+FPGNYV
Sbjct: 3 VALYDYTADKDDELSFQEGDIIYVTKKNDDGWYEGVLNG--VTGLFPGNYV 51
Score = 54.6 bits (132), Expect = 6e-11
Identities = 24/52 (46%), Positives = 32/52 (61%), Gaps = 2/52 (3%)
Query: 114 KFRCIVPYPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASF 165
K + Y + + EL + GD+IYV KK DDGWY+G L G TGLFP ++
Sbjct: 1 KVVALYDYTADKDDELSFQEGDIIYVTKKNDDGWYEGVLN--GVTGLFPGNY 50
>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 = 57.7 bits (140), Expect = 4e-12
Identities = 22/55 (40%), Positives = 33/55 (60%), Gaps = 3/55 (5%)
Query: 116 RCIVPYPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTG---RTGLFPASFMK 167
+ I P+ +E +L L VG L+ V KK GW++G LQ G + G FPA+++K
Sbjct: 3 QVIAPFTATAENQLSLAVGQLVLVRKKSPSGWWEGELQARGKKRQIGWFPANYVK 57
Score = 41.2 bits (97), Expect = 8e-06
Identities = 16/53 (30%), Positives = 28/53 (52%), Gaps = 3/53 (5%)
Query: 61 AIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQ---RTQRSGVFPGNYV 110
I P+ +++L L G + V ++ GW++G Q + ++ G FP NYV
Sbjct: 4 VIAPFTATAENQLSLAVGQLVLVRKKSPSGWWEGELQARGKKRQIGWFPANYV 56
>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 = 57.7 bits (140), Expect = 4e-12
Identities = 20/55 (36%), Positives = 30/55 (54%), Gaps = 2/55 (3%)
Query: 58 EYIAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYVAP 112
+ + Y+ Q++DEL LR+G V E+ DGW++G + G FP NYV
Sbjct: 1 PAVVKFNYEAQREDELSLRKGDRVLVLEKSSDGWWRGECN--GQVGWFPSNYVTE 53
Score = 44.9 bits (107), Expect = 3e-07
Identities = 21/53 (39%), Positives = 26/53 (49%), Gaps = 6/53 (11%)
Query: 110 VAPAKFRCIVPYPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFP 162
A KF Y E EL LR GD + V +K DGW++G G+ G FP
Sbjct: 1 PAVVKFN----YEAQREDELSLRKGDRVLVLEKSSDGWWRGECN--GQVGWFP 47
>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 = 57.2 bits (139), Expect = 5e-12
Identities = 23/46 (50%), Positives = 32/46 (69%)
Query: 118 IVPYPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPA 163
I P+ P + E+ELRVGD+I V DG+ KG +RTG+TGL+P+
Sbjct: 5 IYPHKPRNHDEIELRVGDIIGVAGNHWDGYSKGRNRRTGKTGLYPS 50
Score = 50.3 bits (121), Expect = 3e-09
Identities = 21/47 (44%), Positives = 33/47 (70%)
Query: 60 IAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFP 106
+AIYP+KP+ DE+ELR G + V DG+ KG ++RT ++G++P
Sbjct: 3 VAIYPHKPRNHDEIELRVGDIIGVAGNHWDGYSKGRNRRTGKTGLYP 49
>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 = 55.8 bits (135), Expect = 2e-11
Identities = 21/53 (39%), Positives = 33/53 (62%), Gaps = 2/53 (3%)
Query: 58 EYIAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYV 110
+Y +Y Y Q+DDEL + +G V V E+ +DGW+ T +R + G+ PG Y+
Sbjct: 1 KYSVLYDYTAQEDDELSISKGDVVAVIEKGEDGWW--TVERNGQKGLVPGTYL 51
Score = 37.7 bits (88), Expect = 1e-04
Identities = 17/54 (31%), Positives = 33/54 (61%), Gaps = 2/54 (3%)
Query: 114 KFRCIVPYPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFMK 167
K+ + Y + EL + GD++ V +K +DGW+ T++R G+ GL P ++++
Sbjct: 1 KYSVLYDYTAQEDDELSISKGDVVAVIEKGEDGWW--TVERNGQKGLVPGTYLE 52
>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 = 55.8 bits (134), Expect = 2e-11
Identities = 22/51 (43%), Positives = 31/51 (60%), Gaps = 2/51 (3%)
Query: 60 IAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYV 110
+AIY Y KDDEL G++ V ++ DGW++G +G+FPGNYV
Sbjct: 3 VAIYDYSKDKDDELSFMEGAIIYVIKKNDDGWYEGVCNGV--TGLFPGNYV 51
Score = 45.8 bits (108), Expect = 2e-07
Identities = 22/54 (40%), Positives = 30/54 (55%), Gaps = 2/54 (3%)
Query: 114 KFRCIVPYPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFMK 167
K I Y + + EL G +IYV KK DDGWY+G TGLFP ++++
Sbjct: 1 KVVAIYDYSKDKDDELSFMEGAIIYVIKKNDDGWYEGVCNGV--TGLFPGNYVE 52
>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 = 55.0 bits (133), Expect = 4e-11
Identities = 25/52 (48%), Positives = 35/52 (67%), Gaps = 4/52 (7%)
Query: 116 RC--IVPYPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASF 165
RC + Y N E EL L+ GD+I VH+K+DDGW+ G L G+ G+FPA++
Sbjct: 1 RCKALYSYTANREDELSLQPGDIIEVHEKQDDGWWLGELN--GKKGIFPATY 50
Score = 50.0 bits (120), Expect = 4e-09
Identities = 19/50 (38%), Positives = 28/50 (56%), Gaps = 2/50 (4%)
Query: 61 AIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYV 110
A+Y Y ++DEL L+ G + V E+ DGW+ G + G+FP YV
Sbjct: 4 ALYSYTANREDELSLQPGDIIEVHEKQDDGWWLGELN--GKKGIFPATYV 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 = 54.7 bits (132), Expect = 6e-11
Identities = 22/57 (38%), Positives = 33/57 (57%), Gaps = 4/57 (7%)
Query: 114 KFRCIVPYPPNSEYELELRVGDLIYVHKKR--DDGWYKGTLQRTGRTGLFPASFMKQ 168
K R + Y +E EL LR GD++ + K D GW+KG L G+ G+FP +F++
Sbjct: 1 KARVLFDYEAENEDELTLREGDIVTILSKDCEDKGWWKGELN--GKRGVFPDNFVEP 55
Score = 51.6 bits (124), Expect = 9e-10
Identities = 21/54 (38%), Positives = 33/54 (61%), Gaps = 4/54 (7%)
Query: 61 AIYPYKPQKDDELELRRGSVYTVTER-CQD-GWFKGTSQRTQRSGVFPGNYVAP 112
++ Y+ + +DEL LR G + T+ + C+D GW+KG + GVFP N+V P
Sbjct: 4 VLFDYEAENEDELTLREGDIVTILSKDCEDKGWWKGELN--GKRGVFPDNFVEP 55
>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 = 53.1 bits (128), Expect = 2e-10
Identities = 25/54 (46%), Positives = 37/54 (68%), Gaps = 4/54 (7%)
Query: 116 RCIV--PYPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFMK 167
RC V Y P +E ELEL+VGD I V + ++GW++G L G+ G+FP++F+K
Sbjct: 1 RCKVLFSYTPQNEDELELKVGDTIEVLGEVEEGWWEGKLN--GKVGVFPSNFVK 52
Score = 52.0 bits (125), Expect = 7e-10
Identities = 19/50 (38%), Positives = 29/50 (58%), Gaps = 2/50 (4%)
Query: 61 AIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYV 110
++ Y PQ +DELEL+ G V ++GW++G + GVFP N+V
Sbjct: 4 VLFSYTPQNEDELELKVGDTIEVLGEVEEGWWEGK--LNGKVGVFPSNFV 51
>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 = 52.7 bits (126), Expect = 5e-10
Identities = 23/48 (47%), Positives = 39/48 (81%), Gaps = 2/48 (4%)
Query: 121 YPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFMKQ 168
Y P +E ELEL+VGD+I ++++ ++GW+ GTL G++GLFP++F+K+
Sbjct: 9 YVPQNEDELELKVGDIIDINEEVEEGWWSGTL--NGKSGLFPSNFVKE 54
Score = 50.7 bits (121), Expect = 2e-09
Identities = 20/49 (40%), Positives = 32/49 (65%), Gaps = 2/49 (4%)
Query: 62 IYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYV 110
++ Y PQ +DELEL+ G + + E ++GW+ GT +SG+FP N+V
Sbjct: 6 LFEYVPQNEDELELKVGDIIDINEEVEEGWWSGTL--NGKSGLFPSNFV 52
>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 = 52.0 bits (125), Expect = 5e-10
Identities = 19/53 (35%), Positives = 32/53 (60%), Gaps = 2/53 (3%)
Query: 60 IAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYVAP 112
IA++PY Q +DEL ++G + V + W++G + ++G+FP NYV P
Sbjct: 3 IALFPYTAQNEDELSFQKGDIINVLSKDDPDWWRG--ELNGQTGLFPSNYVEP 53
Score = 40.5 bits (95), Expect = 1e-05
Identities = 20/54 (37%), Positives = 33/54 (61%), Gaps = 2/54 (3%)
Query: 114 KFRCIVPYPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFMK 167
+ + PY +E EL + GD+I V K D W++G L G+TGLFP+++++
Sbjct: 1 QVIALFPYTAQNEDELSFQKGDIINVLSKDDPDWWRGELN--GQTGLFPSNYVE 52
>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 = 51.8 bits (125), Expect = 6e-10
Identities = 16/47 (34%), Positives = 28/47 (59%), Gaps = 1/47 (2%)
Query: 60 IAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFP 106
+A+Y Y ++ DEL ++G + V E+ DGW+KG + + G+ P
Sbjct: 1 VALYDYTAREPDELSFKKGDIIIVLEKSDDGWWKGRLKGGKE-GLIP 46
Score = 50.6 bits (122), Expect = 2e-09
Identities = 19/44 (43%), Positives = 26/44 (59%), Gaps = 1/44 (2%)
Query: 120 PYPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPA 163
Y EL + GD+I V +K DDGW+KG L+ G+ GL P+
Sbjct: 5 DYTAREPDELSFKKGDIIIVLEKSDDGWWKGRLK-GGKEGLIPS 47
>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 = 52.3 bits (125), Expect = 7e-10
Identities = 21/52 (40%), Positives = 29/52 (55%)
Query: 59 YIAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYV 110
Y A+Y Y Q +DE+ R G + +GW GT QRT R+G+ P NY+
Sbjct: 3 YRAMYDYSAQDEDEVSFRDGDYIVNVQPIDEGWMYGTVQRTGRTGMLPANYI 54
Score = 50.0 bits (119), Expect = 5e-09
Identities = 22/53 (41%), Positives = 33/53 (62%)
Query: 115 FRCIVPYPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFMK 167
+R + Y E E+ R GD I + D+GW GT+QRTGRTG+ PA++++
Sbjct: 3 YRAMYDYSAQDEDEVSFRDGDYIVNVQPIDEGWMYGTVQRTGRTGMLPANYIE 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 = 51.5 bits (123), Expect = 9e-10
Identities = 26/55 (47%), Positives = 40/55 (72%), Gaps = 4/55 (7%)
Query: 116 RCIVP--YPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFMKQ 168
RC V Y P +E ELEL+VGD+I V + ++GW++G L G+TG+FP++F+K+
Sbjct: 1 RCQVAFSYLPQNEDELELKVGDIIEVVGEVEEGWWEGVLN--GKTGMFPSNFIKE 53
Score = 42.7 bits (100), Expect = 2e-06
Identities = 17/50 (34%), Positives = 30/50 (60%), Gaps = 2/50 (4%)
Query: 61 AIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYV 110
+ Y PQ +DELEL+ G + V ++GW++G ++G+FP N++
Sbjct: 4 VAFSYLPQNEDELELKVGDIIEVVGEVEEGWWEGV--LNGKTGMFPSNFI 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 = 51.2 bits (122), Expect = 2e-09
Identities = 21/56 (37%), Positives = 35/56 (62%), Gaps = 2/56 (3%)
Query: 55 FVPEYIAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYV 110
++ + +AIY Y K+DEL + G++ V ++ DGW++G +G+FPGNYV
Sbjct: 1 YLEKVVAIYDYTKDKEDELSFQEGAIIYVIKKNDDGWYEGVMNGV--TGLFPGNYV 54
Score = 50.0 bits (119), Expect = 4e-09
Identities = 24/54 (44%), Positives = 33/54 (61%), Gaps = 2/54 (3%)
Query: 114 KFRCIVPYPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFMK 167
K I Y + E EL + G +IYV KK DDGWY+G + G TGLFP ++++
Sbjct: 4 KVVAIYDYTKDKEDELSFQEGAIIYVIKKNDDGWYEGVMN--GVTGLFPGNYVE 55
>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 = 50.4 bits (121), Expect = 2e-09
Identities = 16/54 (29%), Positives = 28/54 (51%), Gaps = 2/54 (3%)
Query: 59 YIAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYVAP 112
+ A+Y Y+ Q DEL G + ++++ W+K T ++G+ P NYV
Sbjct: 2 FRALYDYEAQHPDELSFEEGDLLYISDKSDPNWWKATCGG--KTGLIPSNYVEE 53
Score = 45.0 bits (107), Expect = 2e-07
Identities = 19/51 (37%), Positives = 27/51 (52%), Gaps = 2/51 (3%)
Query: 115 FRCIVPYPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASF 165
FR + Y EL GDL+Y+ K D W+K T G+TGL P+++
Sbjct: 2 FRALYDYEAQHPDELSFEEGDLLYISDKSDPNWWKATCG--GKTGLIPSNY 50
>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 = 50.3 bits (121), Expect = 3e-09
Identities = 23/52 (44%), Positives = 31/52 (59%), Gaps = 2/52 (3%)
Query: 61 AIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYVAP 112
A+Y + PQ+ ELE RRG + TV + W+KG + R G+FP NYV P
Sbjct: 4 ALYDFNPQEPGELEFRRGDIITVLDSSDPDWWKGELR--GRVGIFPANYVQP 53
Score = 43.0 bits (102), Expect = 1e-06
Identities = 20/43 (46%), Positives = 26/43 (60%), Gaps = 2/43 (4%)
Query: 123 PNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASF 165
P ELE R GD+I V D W+KG L+ GR G+FPA++
Sbjct: 10 PQEPGELEFRRGDIITVLDSSDPDWWKGELR--GRVGIFPANY 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 = 50.2 bits (121), Expect = 3e-09
Identities = 21/54 (38%), Positives = 31/54 (57%), Gaps = 2/54 (3%)
Query: 114 KFRCIVPYPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFMK 167
R I Y EL L+ GD++ V K D+GW++G R GR GL P+S+++
Sbjct: 1 YGRVIFDYVATDPNELSLKKGDVVKVLDKDDNGWWEGE--RGGRRGLVPSSYVE 52
Score = 37.1 bits (87), Expect = 3e-04
Identities = 17/54 (31%), Positives = 28/54 (51%), Gaps = 2/54 (3%)
Query: 59 YIAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYVAP 112
I+ Y +EL L++G V V ++ +GW++G R R G+ P +YV
Sbjct: 2 GRVIFDYVATDPNELSLKKGDVVKVLDKDDNGWWEGE--RGGRRGLVPSSYVEE 53
>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 = 50.0 bits (120), Expect = 4e-09
Identities = 18/50 (36%), Positives = 30/50 (60%), Gaps = 2/50 (4%)
Query: 61 AIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYV 110
A + ++ +DEL +G + TVT+ + GW++GT ++G FP NYV
Sbjct: 4 AKFNFEGTNEDELSFDKGDIITVTQVVEGGWWEGTLN--GKTGWFPSNYV 51
Score = 42.3 bits (100), Expect = 3e-06
Identities = 19/52 (36%), Positives = 31/52 (59%), Gaps = 2/52 (3%)
Query: 116 RCIVPYPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFMK 167
R + +E EL GD+I V + + GW++GTL G+TG FP++++K
Sbjct: 3 RAKFNFEGTNEDELSFDKGDIITVTQVVEGGWWEGTLN--GKTGWFPSNYVK 52
>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 = 50.0 bits (120), Expect = 4e-09
Identities = 18/51 (35%), Positives = 31/51 (60%), Gaps = 1/51 (1%)
Query: 60 IAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYV 110
A+Y Y+ +D+E+ G + T E+ +GW+ G + + Q+ G+FP NYV
Sbjct: 3 KALYDYQAAEDNEISFVEGDIITQIEQIDEGWWLGVNAKGQK-GLFPANYV 52
Score = 47.7 bits (114), Expect = 3e-08
Identities = 15/52 (28%), Positives = 29/52 (55%), Gaps = 1/52 (1%)
Query: 116 RCIVPYPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFMK 167
+ + Y + E+ GD+I ++ D+GW+ G G+ GLFPA++++
Sbjct: 3 KALYDYQAAEDNEISFVEGDIITQIEQIDEGWWLGVN-AKGQKGLFPANYVE 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 = 49.6 bits (119), Expect = 5e-09
Identities = 18/51 (35%), Positives = 25/51 (49%)
Query: 60 IAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYV 110
++ Y Q+ DEL L G V V + DGW++G R G FP +Y
Sbjct: 3 QCVHAYTAQQPDELTLEEGDVVNVLRKMPDGWYEGERLRDGERGWFPSSYT 53
Score = 48.1 bits (115), Expect = 2e-08
Identities = 20/49 (40%), Positives = 27/49 (55%)
Query: 117 CIVPYPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASF 165
C+ Y EL L GD++ V +K DGWY+G R G G FP+S+
Sbjct: 4 CVHAYTAQQPDELTLEEGDVVNVLRKMPDGWYEGERLRDGERGWFPSSY 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 = 50.0 bits (119), Expect = 5e-09
Identities = 26/56 (46%), Positives = 31/56 (55%), Gaps = 4/56 (7%)
Query: 62 IYPYKPQKDDELELRRGSVYTVTERCQ----DGWFKGTSQRTQRSGVFPGNYVAPA 113
IYPY PQ DDELEL G ++ Q +GW GTS T SG+ P NY+ A
Sbjct: 7 IYPYTPQNDDELELVPGDYIFMSPMEQTSTSEGWIYGTSLTTGCSGLLPENYITKA 62
Score = 38.1 bits (88), Expect = 1e-04
Identities = 20/59 (33%), Positives = 32/59 (54%), Gaps = 4/59 (6%)
Query: 115 FRCIVPYPPNSEYELELRVGDLIYV----HKKRDDGWYKGTLQRTGRTGLFPASFMKQS 169
+ I PY P ++ ELEL GD I++ +GW GT TG +GL P +++ ++
Sbjct: 4 LQVIYPYTPQNDDELELVPGDYIFMSPMEQTSTSEGWIYGTSLTTGCSGLLPENYITKA 62
>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 = 49.6 bits (119), Expect = 6e-09
Identities = 18/53 (33%), Positives = 32/53 (60%), Gaps = 2/53 (3%)
Query: 58 EYIAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYV 110
E I + Y ++ DEL L+ G + T ++ ++GW++GT + G+FP N+V
Sbjct: 1 EVIVEFDYDAEEPDELTLKVGDIITNVKKMEEGWWEGTLN--GKRGMFPDNFV 51
Score = 49.6 bits (119), Expect = 6e-09
Identities = 21/54 (38%), Positives = 32/54 (59%), Gaps = 2/54 (3%)
Query: 114 KFRCIVPYPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFMK 167
+ Y EL L+VGD+I KK ++GW++GTL G+ G+FP +F+K
Sbjct: 1 EVIVEFDYDAEEPDELTLKVGDIITNVKKMEEGWWEGTLN--GKRGMFPDNFVK 52
>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 = 49.6 bits (118), Expect = 6e-09
Identities = 23/59 (38%), Positives = 31/59 (52%), Gaps = 7/59 (11%)
Query: 59 YIAIYPYKPQKDDELELRRGSVYTVTER-----CQDGWFKGTSQRTQRSGVFPGNYVAP 112
+ A+Y Y+ +DEL LRRG V V + DGW+ G + R G+FP NYV
Sbjct: 2 WTALYDYEASGEDELSLRRGDVVEVLSQDAAVSGDDGWWAGKIRH--RLGIFPANYVTR 58
Score = 39.5 bits (92), Expect = 3e-05
Identities = 19/51 (37%), Positives = 30/51 (58%), Gaps = 7/51 (13%)
Query: 121 YPPNSEYELELRVGDLIYVHKKR-----DDGWYKGTLQRTGRTGLFPASFM 166
Y + E EL LR GD++ V + DDGW+ G ++ R G+FPA+++
Sbjct: 8 YEASGEDELSLRRGDVVEVLSQDAAVSGDDGWWAGKIRH--RLGIFPANYV 56
>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 = 49.6 bits (118), Expect = 6e-09
Identities = 19/50 (38%), Positives = 28/50 (56%)
Query: 61 AIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYV 110
A+Y Y+ DDE+ + G + +GW GT QRT ++G+ P NYV
Sbjct: 6 AMYDYRAADDDEVSFKDGDTIVNVQTIDEGWMYGTVQRTGKTGMLPANYV 55
Score = 48.9 bits (116), Expect = 1e-08
Identities = 20/53 (37%), Positives = 33/53 (62%)
Query: 115 FRCIVPYPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFMK 167
FR + Y + E+ + GD I + D+GW GT+QRTG+TG+ PA++++
Sbjct: 4 FRAMYDYRAADDDEVSFKDGDTIVNVQTIDEGWMYGTVQRTGKTGMLPANYVE 56
>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 = 48.8 bits (117), Expect = 9e-09
Identities = 19/51 (37%), Positives = 30/51 (58%)
Query: 61 AIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYVA 111
A++ + P+ +DE+EL G V + D W +GT+ RT + G+FP YV
Sbjct: 4 ALHKFIPRHEDEIELDIGDPVYVEQEADDLWCEGTNLRTGQRGIFPAAYVV 54
Score = 48.8 bits (117), Expect = 1e-08
Identities = 21/43 (48%), Positives = 31/43 (72%)
Query: 123 PNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASF 165
P E E+EL +GD +YV ++ DD W +GT RTG+ G+FPA++
Sbjct: 10 PRHEDEIELDIGDPVYVEQEADDLWCEGTNLRTGQRGIFPAAY 52
>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 = 48.8 bits (116), Expect = 1e-08
Identities = 20/54 (37%), Positives = 34/54 (62%)
Query: 114 KFRCIVPYPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFMK 167
++R + Y E E+ + GD I ++ DDGW GT++RTG TG+ PA++++
Sbjct: 4 RYRAVYDYNAADEDEVSFQDGDTIVNVQQIDDGWMYGTVERTGDTGMLPANYVE 57
Score = 46.1 bits (109), Expect = 1e-07
Identities = 19/52 (36%), Positives = 28/52 (53%)
Query: 59 YIAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYV 110
Y A+Y Y +DE+ + G ++ DGW GT +RT +G+ P NYV
Sbjct: 5 YRAVYDYNAADEDEVSFQDGDTIVNVQQIDDGWMYGTVERTGDTGMLPANYV 56
>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 = 48.5 bits (116), Expect = 1e-08
Identities = 21/50 (42%), Positives = 32/50 (64%), Gaps = 2/50 (4%)
Query: 116 RCIVPYPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASF 165
R + P+ S EL L+ GD+IY+ ++ D WY+G + GR G+FPAS+
Sbjct: 3 RALYPFKAQSAKELSLKKGDIIYIRRQIDKNWYEG--EHNGRVGIFPASY 50
Score = 45.4 bits (108), Expect = 2e-07
Identities = 17/51 (33%), Positives = 28/51 (54%), Gaps = 2/51 (3%)
Query: 60 IAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYV 110
A+YP+K Q EL L++G + + + W++G R G+FP +YV
Sbjct: 3 RALYPFKAQSAKELSLKKGDIIYIRRQIDKNWYEGEHNG--RVGIFPASYV 51
>gnl|CDD|238093 cd00162, RING, RING-finger (Really Interesting New Gene) domain,
a specialized type of Zn-finger of 40 to 60 residues
that binds two atoms of zinc; defined by the
'cross-brace' motif C-X2-C-X(9-39)-C-X(1-3)-
H-X(2-3)-(N/C/H)-X2-C-X(4-48)C-X2-C; probably involved
in mediating protein-protein interactions; identified
in a proteins with a wide range of functions such as
viral replication, signal transduction, and
development; has two variants, the C3HC4-type and a
C3H2C3-type (RING-H2 finger), which have different
cysteine/histidine pattern; a subset of RINGs are
associated with B-Boxes (C-X2-H-X7-C-X7-C-X2-C-H-X2-H).
Length = 45
Score = 48.2 bits (115), Expect = 1e-08
Identities = 16/42 (38%), Positives = 24/42 (57%), Gaps = 1/42 (2%)
Query: 11 ECSVCLDRLDTSSKVLPCQHTFCKKCLEEIVSSHKELRCPEC 52
EC +CL+ +LPC H FC+ C+++ + S K CP C
Sbjct: 1 ECPICLEEFREPVVLLPCGHVFCRSCIDKWLKSGK-NTCPLC 41
>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 = 47.7 bits (114), Expect = 2e-08
Identities = 21/51 (41%), Positives = 30/51 (58%), Gaps = 2/51 (3%)
Query: 61 AIYPYKPQKDDELELRRGSVYTVT-ERCQDGWFKGTSQRTQRSGVFPGNYV 110
A+Y + Q EL LR G V T+T + DGW +G + R + G+FP +YV
Sbjct: 4 ALYDFDSQPSGELSLRAGEVLTITRQDVGDGWLEGRNSRGEV-GLFPSSYV 53
Score = 34.6 bits (80), Expect = 0.002
Identities = 18/53 (33%), Positives = 29/53 (54%), Gaps = 2/53 (3%)
Query: 114 KFRCIVPYPPNSEYELELRVGDLIYVHKKRD-DGWYKGTLQRTGRTGLFPASF 165
K R + + EL LR G+++ + ++ DGW +G R G GLFP+S+
Sbjct: 1 KVRALYDFDSQPSGELSLRAGEVLTITRQDVGDGWLEGRNSR-GEVGLFPSSY 52
>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 = 47.3 bits (113), Expect = 4e-08
Identities = 19/45 (42%), Positives = 25/45 (55%), Gaps = 2/45 (4%)
Query: 66 KPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYV 110
Q D+EL+LR G V T+T GWF+G R G+FP +V
Sbjct: 9 SAQLDEELDLREGDVVTITGILDKGWFRGELN--GRRGIFPEGFV 51
Score = 44.7 bits (106), Expect = 4e-07
Identities = 17/38 (44%), Positives = 24/38 (63%), Gaps = 2/38 (5%)
Query: 128 ELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASF 165
EL+LR GD++ + D GW++G L GR G+FP F
Sbjct: 15 ELDLREGDVVTITGILDKGWFRGELN--GRRGIFPEGF 50
>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 = 47.3 bits (112), Expect = 4e-08
Identities = 21/55 (38%), Positives = 34/55 (61%), Gaps = 3/55 (5%)
Query: 56 VPEYIAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYV 110
+P Y+ + Y +++DEL L +G+ V E+C DGW++G+ + G FP NYV
Sbjct: 2 LPAYVK-FNYTAEREDELSLVKGTKVIVMEKCSDGWWRGSYN--GQVGWFPSNYV 53
Score = 33.5 bits (76), Expect = 0.006
Identities = 16/48 (33%), Positives = 27/48 (56%), Gaps = 2/48 (4%)
Query: 121 YPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFMKQ 168
Y E EL L G + V +K DGW++G+ G+ G FP++++ +
Sbjct: 10 YTAEREDELSLVKGTKVIVMEKCSDGWWRGSYN--GQVGWFPSNYVTE 55
>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 = 47.5 bits (113), Expect = 4e-08
Identities = 21/59 (35%), Positives = 31/59 (52%), Gaps = 7/59 (11%)
Query: 59 YIAIYPYKPQKDDELELRRGSVYTVTER-----CQDGWFKGTSQRTQRSGVFPGNYVAP 112
+ A++ Y + +DEL LRRG V + +GW+ G + G+FP NYVAP
Sbjct: 2 WTALFDYDARGEDELTLRRGQPVEVLSKDAAVSGDEGWWTGKIGD--KVGIFPSNYVAP 58
>gnl|CDD|214546 smart00184, RING, Ring finger. E3 ubiquitin-protein ligase
activity is intrinsic to the RING domain of c-Cbl and
is likely to be a general function of this domain;
Various RING fingers exhibit binding activity towards
E2 ubiquitin-conjugating enzymes (Ubc' s).
Length = 40
Score = 47.1 bits (112), Expect = 4e-08
Identities = 15/41 (36%), Positives = 22/41 (53%), Gaps = 1/41 (2%)
Query: 12 CSVCLDRLDTSSKVLPCQHTFCKKCLEEIVSSHKELRCPEC 52
C +CL+ +LPC HTFC+ C+ + + S CP C
Sbjct: 1 CPICLEEYLKDPVILPCGHTFCRSCIRKWLESGN-NTCPIC 40
>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 = 47.3 bits (112), Expect = 4e-08
Identities = 22/55 (40%), Positives = 35/55 (63%), Gaps = 3/55 (5%)
Query: 56 VPEYIAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYV 110
+P ++ + Y +++DEL L +GS TV E+C DGW++G+ + G FP NYV
Sbjct: 1 IPAFVK-FAYVAEREDELSLVKGSRVTVMEKCSDGWWRGSYN--GQIGWFPSNYV 52
Score = 30.7 bits (69), Expect = 0.046
Identities = 16/46 (34%), Positives = 26/46 (56%), Gaps = 2/46 (4%)
Query: 121 YPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFM 166
Y E EL L G + V +K DGW++G+ G+ G FP++++
Sbjct: 9 YVAEREDELSLVKGSRVTVMEKCSDGWWRGSYN--GQIGWFPSNYV 52
>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 = 47.2 bits (112), Expect = 4e-08
Identities = 21/48 (43%), Positives = 31/48 (64%), Gaps = 2/48 (4%)
Query: 121 YPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFMKQ 168
Y E EL + VGD+I KK D GW++G ++ GR GLFP +F+++
Sbjct: 8 YKAQHEDELTITVGDIITKIKKDDGGWWEGEIK--GRRGLFPDNFVRE 53
Score = 42.6 bits (100), Expect = 2e-06
Identities = 19/53 (35%), Positives = 30/53 (56%), Gaps = 2/53 (3%)
Query: 58 EYIAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYV 110
E I + YK Q +DEL + G + T ++ GW++G + R G+FP N+V
Sbjct: 1 EAIVEFDYKAQHEDELTITVGDIITKIKKDDGGWWEG--EIKGRRGLFPDNFV 51
>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 = 46.7 bits (111), Expect = 6e-08
Identities = 18/44 (40%), Positives = 30/44 (68%), Gaps = 2/44 (4%)
Query: 124 NSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFMK 167
NS+ EL + GD+I++ + + W +GT++ G TG+FP SF+K
Sbjct: 11 NSKLELNFKAGDVIFLLSRVNKDWLEGTVR--GATGIFPLSFVK 52
Score = 29.8 bits (67), Expect = 0.12
Identities = 13/50 (26%), Positives = 24/50 (48%), Gaps = 2/50 (4%)
Query: 61 AIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYV 110
A++ + EL + G V + R W +GT + +G+FP ++V
Sbjct: 4 ALFDFTGNSKLELNFKAGDVIFLLSRVNKDWLEGTVR--GATGIFPLSFV 51
>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 = 47.1 bits (112), Expect = 7e-08
Identities = 21/68 (30%), Positives = 33/68 (48%), Gaps = 15/68 (22%)
Query: 58 EYIAIYPYKPQKDDELELRRGSVYTVT-------------ERCQD--GWFKGTSQRTQRS 102
+Y A+Y Y+ ++D+++ L+ G V V E GW +G ++RT
Sbjct: 2 QYRALYDYEKERDEDIILKTGDVLVVENPELLALGVPDGKETVPKPEGWLEGKNERTGER 61
Query: 103 GVFPGNYV 110
G FPG YV
Sbjct: 62 GDFPGTYV 69
Score = 35.6 bits (82), Expect = 0.001
Identities = 15/68 (22%), Positives = 30/68 (44%), Gaps = 15/68 (22%)
Query: 113 AKFRCIVPYPPNSEYELELRVGDLIYVHK---------------KRDDGWYKGTLQRTGR 157
++R + Y + ++ L+ GD++ V + +GW +G +RTG
Sbjct: 1 VQYRALYDYEKERDEDIILKTGDVLVVENPELLALGVPDGKETVPKPEGWLEGKNERTGE 60
Query: 158 TGLFPASF 165
G FP ++
Sbjct: 61 RGDFPGTY 68
>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 = 46.3 bits (110), Expect = 9e-08
Identities = 25/56 (44%), Positives = 34/56 (60%), Gaps = 5/56 (8%)
Query: 58 EYIAIYPYKPQKDDELELRRGSVYTVTERCQDG-WFKGTSQRTQRSGVFPGNYVAP 112
EYIA+YPY+ + +L G V VT+ +DG W+ GT R+G+FP NYV P
Sbjct: 1 EYIALYPYESNEPGDLTFNAGDVILVTK--KDGEWWTGTIG--DRTGIFPSNYVRP 52
Score = 38.2 bits (89), Expect = 8e-05
Identities = 18/48 (37%), Positives = 29/48 (60%), Gaps = 3/48 (6%)
Query: 120 PYPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFMK 167
PY N +L GD+I V KK + W+ GT+ RTG+FP+++++
Sbjct: 7 PYESNEPGDLTFNAGDVILVTKKDGE-WWTGTIG--DRTGIFPSNYVR 51
>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 = 46.3 bits (110), Expect = 9e-08
Identities = 19/51 (37%), Positives = 32/51 (62%), Gaps = 1/51 (1%)
Query: 60 IAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYV 110
+ +Y Y+ +D+E+EL G + T E + W+ GT+ + + SG+FP NYV
Sbjct: 3 VVLYDYEKDEDNEIELVEGEIVTNIEMVDEDWWMGTNSKGE-SGLFPSNYV 52
Score = 37.5 bits (87), Expect = 2e-04
Identities = 16/54 (29%), Positives = 33/54 (61%), Gaps = 3/54 (5%)
Query: 116 RCIVP--YPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFMK 167
R +V Y + + E+EL G+++ + D+ W+ GT + G +GLFP+++++
Sbjct: 1 RAVVLYDYEKDEDNEIELVEGEIVTNIEMVDEDWWMGTNSK-GESGLFPSNYVE 53
>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 = 46.2 bits (109), Expect = 1e-07
Identities = 16/55 (29%), Positives = 32/55 (58%)
Query: 59 YIAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYVAPA 113
++A+Y Y+ + ++L ++G + + + W++ S T ++G P NYVAPA
Sbjct: 3 FVALYDYEARTTEDLSFKKGERFQIINNTEGDWWEARSIATGKNGYIPSNYVAPA 57
Score = 25.8 bits (56), Expect = 3.1
Identities = 10/56 (17%), Positives = 25/56 (44%)
Query: 115 FRCIVPYPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFMKQSD 170
F + Y + +L + G+ + + W++ TG+ G P++++ +D
Sbjct: 3 FVALYDYEARTTEDLSFKKGERFQIINNTEGDWWEARSIATGKNGYIPSNYVAPAD 58
>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 = 46.3 bits (110), Expect = 1e-07
Identities = 22/54 (40%), Positives = 30/54 (55%), Gaps = 4/54 (7%)
Query: 114 KFRCIVPYPPNSEYELELRVGDLIYVHKK--RDDGWYKGTLQRTGRTGLFPASF 165
R + Y P + EL L+ GD+I V K D+GW++G L GR G FP +F
Sbjct: 1 YCRVLFDYNPVAPDELALKKGDVIEVISKETEDEGWWEGELN--GRRGFFPDNF 52
Score = 42.8 bits (101), Expect = 2e-06
Identities = 20/53 (37%), Positives = 28/53 (52%), Gaps = 4/53 (7%)
Query: 62 IYPYKPQKDDELELRRGSVYTVT--ERCQDGWFKGTSQRTQRSGVFPGNYVAP 112
++ Y P DEL L++G V V E +GW++G R G FP N+V P
Sbjct: 5 LFDYNPVAPDELALKKGDVIEVISKETEDEGWWEGELN--GRRGFFPDNFVMP 55
>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 = 46.1 bits (109), Expect = 1e-07
Identities = 18/43 (41%), Positives = 30/43 (69%), Gaps = 2/43 (4%)
Query: 125 SEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFMK 167
S EL L+ GD++Y+HK+ D W +G + GR G+FPA++++
Sbjct: 13 SPKELTLQKGDIVYIHKEVDKNWLEG--EHHGRVGIFPANYVE 53
Score = 30.3 bits (68), Expect = 0.088
Identities = 14/46 (30%), Positives = 24/46 (52%), Gaps = 2/46 (4%)
Query: 65 YKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYV 110
++ Q EL L++G + + + W +G + R G+FP NYV
Sbjct: 9 FQAQSPKELTLQKGDIVYIHKEVDKNWLEG--EHHGRVGIFPANYV 52
>gnl|CDD|206094 pfam13923, zf-C3HC4_2, Zinc finger, C3HC4 type (RING finger).
Length = 45
Score = 45.6 bits (108), Expect = 1e-07
Identities = 16/45 (35%), Positives = 24/45 (53%), Gaps = 2/45 (4%)
Query: 8 DLLECSVCLDRLDTSSKVLPCQHTFCKKCLEEIVSSHKELRCPEC 52
+ LEC +CLD L + PC H FC++C+ + +CP C
Sbjct: 1 EELECPICLDLLRDPVVLTPCGHVFCRECILRYLKKKS--KCPIC 43
>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 = 46.4 bits (110), Expect = 1e-07
Identities = 23/68 (33%), Positives = 39/68 (57%), Gaps = 15/68 (22%)
Query: 58 EYIAIYPYKPQKDDELELRRGSVYTVT-------------ERCQD--GWFKGTSQRTQRS 102
+Y A+YPY+ +++++++L G V TV+ E+C GW G ++RT++
Sbjct: 2 QYRALYPYRKEREEDIDLLPGDVLTVSRAALQALGVKEGGEQCPQSIGWILGLNERTKQR 61
Query: 103 GVFPGNYV 110
G FPG YV
Sbjct: 62 GDFPGTYV 69
Score = 28.3 bits (63), Expect = 0.64
Identities = 17/69 (24%), Positives = 32/69 (46%), Gaps = 15/69 (21%)
Query: 114 KFRCIVPYPPNSEYELELRVGDLIYVHK--------KRDD-------GWYKGTLQRTGRT 158
++R + PY E +++L GD++ V + K GW G +RT +
Sbjct: 2 QYRALYPYRKEREEDIDLLPGDVLTVSRAALQALGVKEGGEQCPQSIGWILGLNERTKQR 61
Query: 159 GLFPASFMK 167
G FP ++++
Sbjct: 62 GDFPGTYVE 70
>gnl|CDD|222279 pfam13639, zf-RING_2, Ring finger domain.
Length = 46
Score = 45.1 bits (107), Expect = 2e-07
Identities = 18/44 (40%), Positives = 25/44 (56%), Gaps = 4/44 (9%)
Query: 11 ECSVCLDRLDTSSKV--LPCQHTFCKKCLEEIVSSHKELRCPEC 52
EC +CLD + +V LPC H F K+CL++ + S CP C
Sbjct: 2 ECPICLDEFEPGEEVVVLPCGHVFHKECLDKWLRSSN--TCPLC 43
>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 = 45.3 bits (107), Expect = 2e-07
Identities = 22/50 (44%), Positives = 29/50 (58%)
Query: 116 RCIVPYPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASF 165
R + + P E ELEL V D + V + DD WY+G RTG G+FPA +
Sbjct: 3 RAVFRFIPRHEDELELDVDDPLLVEAEEDDYWYRGYNMRTGERGIFPAFY 52
Score = 37.6 bits (87), Expect = 2e-04
Identities = 17/49 (34%), Positives = 26/49 (53%)
Query: 61 AIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNY 109
A++ + P+ +DELEL V D W++G + RT G+FP Y
Sbjct: 4 AVFRFIPRHEDELELDVDDPLLVEAEEDDYWYRGYNMRTGERGIFPAFY 52
>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 = 45.4 bits (108), Expect = 2e-07
Identities = 15/53 (28%), Positives = 27/53 (50%), Gaps = 3/53 (5%)
Query: 116 RCIVPYPPNSEYELELRVGDLIYVHKKRDDGWYKGTL---QRTGRTGLFPASF 165
+ + P S+ +L + GD+IYV K GW+ G + + G FP+++
Sbjct: 3 VALYDFTPKSKNQLSFKAGDIIYVLNKDPSGWWDGVIISSSGKVKRGWFPSNY 55
Score = 32.6 bits (75), Expect = 0.010
Identities = 16/54 (29%), Positives = 28/54 (51%), Gaps = 5/54 (9%)
Query: 60 IAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGT----SQRTQRSGVFPGNY 109
+A+Y + P+ ++L + G + V + GW+ G S + +R G FP NY
Sbjct: 3 VALYDFTPKSKNQLSFKAGDIIYVLNKDPSGWWDGVIISSSGKVKR-GWFPSNY 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 = 45.0 bits (107), Expect = 3e-07
Identities = 19/56 (33%), Positives = 28/56 (50%), Gaps = 3/56 (5%)
Query: 60 IAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGT---SQRTQRSGVFPGNYVAP 112
A+YPY+ +D+L G + TVTE W+ G S + G+FP N+V
Sbjct: 5 KALYPYESDHEDDLNFDVGQLITVTEEEDADWYFGEYVDSNGNTKEGIFPKNFVEV 60
Score = 34.2 bits (79), Expect = 0.003
Identities = 19/56 (33%), Positives = 27/56 (48%), Gaps = 5/56 (8%)
Query: 115 FRCIVPYPPNSEYE--LELRVGDLIYVHKKRDDGWYKGTLQR---TGRTGLFPASF 165
F+ YP S++E L VG LI V ++ D WY G + G+FP +F
Sbjct: 2 FKVKALYPYESDHEDDLNFDVGQLITVTEEEDADWYFGEYVDSNGNTKEGIFPKNF 57
>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 = 45.0 bits (106), Expect = 3e-07
Identities = 21/55 (38%), Positives = 32/55 (58%), Gaps = 3/55 (5%)
Query: 58 EYIAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYVAP 112
EY+A+Y Y+ + +L ++G V VT++ D W T ++GVFP NYV P
Sbjct: 1 EYVAMYTYESNEQGDLTFQQGDVILVTKKDGDWW---TGTVGDKTGVFPSNYVRP 52
Score = 36.5 bits (84), Expect = 5e-04
Identities = 17/47 (36%), Positives = 30/47 (63%), Gaps = 3/47 (6%)
Query: 121 YPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFMK 167
Y N + +L + GD+I V KK D W+ GT+ +TG+FP+++++
Sbjct: 8 YESNEQGDLTFQQGDVILVTKKDGD-WWTGTV--GDKTGVFPSNYVR 51
>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 = 45.1 bits (107), Expect = 3e-07
Identities = 20/59 (33%), Positives = 30/59 (50%), Gaps = 7/59 (11%)
Query: 59 YIAIYPYKPQKDDELELRRGSVYTVTER-----CQDGWFKGTSQRTQRSGVFPGNYVAP 112
+ A++ Y+ +DEL LRRG V + +GW+ G + R G+FP NYV
Sbjct: 2 WTAVFDYEASAEDELTLRRGDRVEVLSKDSAVSGDEGWWTG--KINDRVGIFPSNYVTS 58
Score = 39.7 bits (93), Expect = 3e-05
Identities = 18/50 (36%), Positives = 28/50 (56%), Gaps = 7/50 (14%)
Query: 121 YPPNSEYELELRVGDLIYVHKKR-----DDGWYKGTLQRTGRTGLFPASF 165
Y ++E EL LR GD + V K D+GW+ G + R G+FP+++
Sbjct: 8 YEASAEDELTLRRGDRVEVLSKDSAVSGDEGWWTGKIN--DRVGIFPSNY 55
>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 = 44.8 bits (106), Expect = 4e-07
Identities = 20/52 (38%), Positives = 34/52 (65%), Gaps = 2/52 (3%)
Query: 59 YIAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYV 110
Y+A+Y +KPQ++++LE+R G T+ + + W+KG + R G FP N+V
Sbjct: 2 YVALYKFKPQENEDLEMRPGDKITLLDDSNEDWWKGKIE--DRVGFFPANFV 51
Score = 40.9 bits (96), Expect = 1e-05
Identities = 21/60 (35%), Positives = 34/60 (56%), Gaps = 8/60 (13%)
Query: 109 YVAPAKFRCIVPYPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFMKQ 168
YVA KF+ P +LE+R GD I + ++ W+KG ++ R G FPA+F+++
Sbjct: 2 YVALYKFK------PQENEDLEMRPGDKITLLDDSNEDWWKGKIED--RVGFFPANFVQR 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 = 44.7 bits (105), Expect = 4e-07
Identities = 21/59 (35%), Positives = 35/59 (59%), Gaps = 6/59 (10%)
Query: 110 VAPAKFRCIVPYPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFMKQ 168
V AKF + +E EL GD+I+V + + GW++GT GRTG FP++++++
Sbjct: 1 VVRAKFN----FQQTNEDELSFSKGDVIHVTRVEEGGWWEGTH--NGRTGWFPSNYVRE 53
Score = 38.9 bits (90), Expect = 7e-05
Identities = 19/50 (38%), Positives = 28/50 (56%), Gaps = 2/50 (4%)
Query: 61 AIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYV 110
A + ++ +DEL +G V VT + GW++GT R+G FP NYV
Sbjct: 4 AKFNFQQTNEDELSFSKGDVIHVTRVEEGGWWEGT--HNGRTGWFPSNYV 51
>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 = 44.9 bits (106), Expect = 4e-07
Identities = 20/51 (39%), Positives = 34/51 (66%), Gaps = 4/51 (7%)
Query: 62 IYPYKPQKDDELELRRGSVYTV-TERCQD-GWFKGTSQRTQRSGVFPGNYV 110
++PY+ Q +DEL ++ G + T+ ++ C D GW++G + R GVFP N+V
Sbjct: 5 LFPYEAQNEDELTIKEGDIVTLISKDCIDAGWWEG--ELNGRRGVFPDNFV 53
Score = 39.9 bits (93), Expect = 2e-05
Identities = 20/54 (37%), Positives = 33/54 (61%), Gaps = 4/54 (7%)
Query: 116 RCIVPYPPNSEYELELRVGDLIYVHKKR--DDGWYKGTLQRTGRTGLFPASFMK 167
+ + PY +E EL ++ GD++ + K D GW++G L GR G+FP +F+K
Sbjct: 3 KVLFPYEAQNEDELTIKEGDIVTLISKDCIDAGWWEGEL--NGRRGVFPDNFVK 54
>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 = 44.7 bits (106), Expect = 4e-07
Identities = 20/58 (34%), Positives = 32/58 (55%), Gaps = 3/58 (5%)
Query: 112 PAKFRCIVPYP--PNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFMK 167
+ R I+PY P+++ EL + GD+ VH + +DGW T RTG +GL ++
Sbjct: 1 RRRVRAILPYNKVPDTD-ELSFQKGDIFVVHNELEDGWLWVTSLRTGESGLVFRDLVE 57
Score = 39.7 bits (93), Expect = 3e-05
Identities = 20/54 (37%), Positives = 27/54 (50%), Gaps = 1/54 (1%)
Query: 60 IAIYPYKPQKD-DELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYVAP 112
AI PY D DEL ++G ++ V +DGW TS RT SG+ + V
Sbjct: 5 RAILPYNKVPDTDELSFQKGDIFVVHNELEDGWLWVTSLRTGESGLVFRDLVEE 58
>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 = 44.6 bits (106), Expect = 5e-07
Identities = 24/55 (43%), Positives = 28/55 (50%), Gaps = 5/55 (9%)
Query: 115 FRCIVPYPPNSEYELELRVGDLIYVHKKRD----DGWYKGTLQRTGRTGLFPASF 165
I + SE EL L+ GD I + + D DGWY G RTG TGLFP F
Sbjct: 2 LIVIHDFNARSEDELTLKPGDKIEL-IEDDEEFGDGWYLGRNLRTGETGLFPVVF 55
Score = 41.9 bits (99), Expect = 4e-06
Identities = 17/54 (31%), Positives = 29/54 (53%), Gaps = 3/54 (5%)
Query: 59 YIAIYPYKPQKDDELELRRGSVYTVTERCQ---DGWFKGTSQRTQRSGVFPGNY 109
I I+ + + +DEL L+ G + E + DGW+ G + RT +G+FP +
Sbjct: 2 LIVIHDFNARSEDELTLKPGDKIELIEDDEEFGDGWYLGRNLRTGETGLFPVVF 55
>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 = 44.3 bits (105), Expect = 5e-07
Identities = 18/50 (36%), Positives = 26/50 (52%), Gaps = 2/50 (4%)
Query: 61 AIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYV 110
A+Y Y Q DEL G + + + GW+ G + + G+FPGNYV
Sbjct: 4 ALYAYDAQDTDELSFNEGDIIEILKEDPSGWWTGRLRG--KEGLFPGNYV 51
Score = 40.5 bits (95), Expect = 1e-05
Identities = 16/53 (30%), Positives = 29/53 (54%), Gaps = 2/53 (3%)
Query: 116 RCIVPYPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFMKQ 168
+ + Y EL GD+I + K+ GW+ G L+ G+ GLFP +++++
Sbjct: 3 KALYAYDAQDTDELSFNEGDIIEILKEDPSGWWTGRLR--GKEGLFPGNYVEK 53
>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 = 44.6 bits (106), Expect = 5e-07
Identities = 18/54 (33%), Positives = 31/54 (57%), Gaps = 2/54 (3%)
Query: 57 PEYIAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYV 110
P A+Y ++P+ + EL + G + T+T + + W++G +SG FP NYV
Sbjct: 1 PCCRALYDFEPENEGELGFKEGDIITLTNQIDENWYEGMVN--GQSGFFPVNYV 52
Score = 41.1 bits (97), Expect = 8e-06
Identities = 15/43 (34%), Positives = 27/43 (62%), Gaps = 2/43 (4%)
Query: 123 PNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASF 165
P +E EL + GD+I + + D+ WY+G + G++G FP ++
Sbjct: 11 PENEGELGFKEGDIITLTNQIDENWYEGMVN--GQSGFFPVNY 51
>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 = 44.3 bits (105), Expect = 5e-07
Identities = 19/57 (33%), Positives = 34/57 (59%), Gaps = 6/57 (10%)
Query: 111 APAKFRCIVPYPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFMK 167
A AK+ + ++ EL R GD+I + ++ D+ WY+G + GR G+FP S+++
Sbjct: 2 ARAKYN----FNADTGVELSFRKGDVITLTRRVDENWYEGRI--GGRQGIFPVSYVQ 52
Score = 43.5 bits (103), Expect = 9e-07
Identities = 19/53 (35%), Positives = 28/53 (52%), Gaps = 2/53 (3%)
Query: 58 EYIAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYV 110
E A Y + EL R+G V T+T R + W++G + R G+FP +YV
Sbjct: 1 EARAKYNFNADTGVELSFRKGDVITLTRRVDENWYEG--RIGGRQGIFPVSYV 51
>gnl|CDD|215715 pfam00097, zf-C3HC4, Zinc finger, C3HC4 type (RING finger). The
C3HC4 type zinc-finger (RING finger) is a cysteine-rich
domain of 40 to 60 residues that coordinates two zinc
ions, and has the consensus sequence:
C-X2-C-X(9-39)-C-X(1-3)-H-X(2-3)-C-X2-C-X(4-48)-C-X2-C
where X is any amino acid. Many proteins containing a
RING finger play a key role in the ubiquitination
pathway.
Length = 40
Score = 44.0 bits (104), Expect = 5e-07
Identities = 15/41 (36%), Positives = 21/41 (51%), Gaps = 1/41 (2%)
Query: 12 CSVCLDRLDTSSKVLPCQHTFCKKCLEEIVSSHKELRCPEC 52
C +CL+ +LPC H FC KC+ + S + CP C
Sbjct: 1 CPICLEEPKDPVTILPCGHLFCSKCILSWLES-GNVTCPLC 40
>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 = 43.7 bits (104), Expect = 8e-07
Identities = 14/51 (27%), Positives = 25/51 (49%)
Query: 59 YIAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNY 109
Y+A+Y Y+ + DD+L ++G + + W+ T + G P NY
Sbjct: 2 YVALYDYEARTDDDLSFKKGDRLQILDDSDGDWWLARHLSTGKEGYIPSNY 52
Score = 32.2 bits (74), Expect = 0.013
Identities = 9/38 (23%), Positives = 18/38 (47%)
Query: 128 ELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASF 165
+L + GD + + D W+ TG+ G P+++
Sbjct: 15 DLSFKKGDRLQILDDSDGDWWLARHLSTGKEGYIPSNY 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 = 43.7 bits (103), Expect = 9e-07
Identities = 20/52 (38%), Positives = 29/52 (55%), Gaps = 2/52 (3%)
Query: 61 AIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYVAP 112
A+Y ++ +DDEL G V V + W+KG + + G+FP NYVAP
Sbjct: 4 ALYDFEALEDDELGFNSGDVIEVLDSSNPSWWKG--RLHGKLGLFPANYVAP 53
Score = 37.5 bits (87), Expect = 2e-04
Identities = 17/53 (32%), Positives = 27/53 (50%), Gaps = 2/53 (3%)
Query: 116 RCIVPYPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFMKQ 168
R + + + EL GD+I V + W+KG L G+ GLFPA+++
Sbjct: 3 RALYDFEALEDDELGFNSGDVIEVLDSSNPSWWKGRLH--GKLGLFPANYVAP 53
>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 = 43.6 bits (103), Expect = 9e-07
Identities = 17/50 (34%), Positives = 31/50 (62%), Gaps = 2/50 (4%)
Query: 61 AIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYV 110
A+Y ++ +D+EL + G + TV + W+KG++ R + G+FP N+V
Sbjct: 5 ALYDFEAAEDNELTFKAGEIITVLDDSDPNWWKGSNHRGE--GLFPANFV 52
Score = 41.3 bits (97), Expect = 7e-06
Identities = 18/54 (33%), Positives = 28/54 (51%), Gaps = 2/54 (3%)
Query: 114 KFRCIVPYPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFMK 167
K R + + + EL + G++I V D W+KG+ R GLFPA+F+
Sbjct: 2 KVRALYDFEAAEDNELTFKAGEIITVLDDSDPNWWKGSNHR--GEGLFPANFVT 53
>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 = 43.8 bits (103), Expect = 1e-06
Identities = 18/44 (40%), Positives = 32/44 (72%), Gaps = 2/44 (4%)
Query: 125 SEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFMKQ 168
+E EL + GD+IYV + + GW++GTL G+TG FP++++++
Sbjct: 14 NEDELSVCKGDIIYVTRVEEGGWWEGTLN--GKTGWFPSNYVRE 55
Score = 37.7 bits (87), Expect = 2e-04
Identities = 19/54 (35%), Positives = 30/54 (55%), Gaps = 2/54 (3%)
Query: 61 AIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYVAPAK 114
A + +K +DEL + +G + VT + GW++GT ++G FP NYV K
Sbjct: 6 ARFNFKQTNEDELSVCKGDIIYVTRVEEGGWWEGT--LNGKTGWFPSNYVREIK 57
>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 = 43.7 bits (103), Expect = 1e-06
Identities = 19/51 (37%), Positives = 27/51 (52%), Gaps = 2/51 (3%)
Query: 60 IAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYV 110
+A+Y Y+ + DDE+ T E +GW+KGT G+FP NYV
Sbjct: 4 VALYDYQGEGDDEISFDPQETITDIEMVDEGWWKGTCH--GHRGLFPANYV 52
Score = 34.8 bits (80), Expect = 0.002
Identities = 15/47 (31%), Positives = 25/47 (53%), Gaps = 2/47 (4%)
Query: 121 YPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFMK 167
Y + E+ + I + D+GW+KGT G GLFPA++++
Sbjct: 9 YQGEGDDEISFDPQETITDIEMVDEGWWKGTCH--GHRGLFPANYVE 53
>gnl|CDD|222135 pfam13445, zf-RING_LisH, RING-type zinc-finger, LisH dimerisation
motif. This zinc-finger is the dimerisation motif for
LisH proteins, and is also a typical RING-type of plant
ubiquitin ligases.
Length = 55
Score = 43.5 bits (103), Expect = 1e-06
Identities = 10/44 (22%), Positives = 21/44 (47%), Gaps = 3/44 (6%)
Query: 10 LECSVCLDRLDTSS---KVLPCQHTFCKKCLEEIVSSHKELRCP 50
C + + + +LPC H + +K LE++ + + +CP
Sbjct: 11 FVCPISKEVMTDEENPPVMLPCGHVYSRKALEKLAKNGGKFKCP 54
>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 = 43.1 bits (102), Expect = 1e-06
Identities = 17/52 (32%), Positives = 29/52 (55%), Gaps = 2/52 (3%)
Query: 59 YIAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYV 110
A+YP++ +K++ L +G + TV E+ Q+ W+ G G FP +YV
Sbjct: 2 ATALYPWRAKKENHLSFAKGDIITVLEQ-QEMWWFGEL-EGGEEGWFPKSYV 51
Score = 32.0 bits (73), Expect = 0.016
Identities = 16/48 (33%), Positives = 25/48 (52%), Gaps = 2/48 (4%)
Query: 120 PYPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFMK 167
P+ E L GD+I V ++++ W+ G L G G FP S++K
Sbjct: 7 PWRAKKENHLSFAKGDIITVLEQQEM-WWFGEL-EGGEEGWFPKSYVK 52
>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 = 42.7 bits (100), Expect = 2e-06
Identities = 16/54 (29%), Positives = 30/54 (55%)
Query: 59 YIAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYVAP 112
++A+Y Y+ + +D+L +G + + + W++ S T +G P NYVAP
Sbjct: 3 FVALYDYEARTEDDLSFHKGEKFQILNSSEGDWWEARSLTTGETGYIPSNYVAP 56
>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 = 42.7 bits (101), Expect = 2e-06
Identities = 19/59 (32%), Positives = 28/59 (47%), Gaps = 5/59 (8%)
Query: 114 KFRCIVPYPPNSEYELELRVGDLIYV-----HKKRDDGWYKGTLQRTGRTGLFPASFMK 167
K R Y EL GD+I V +++D+GW G + TG G+FP +F +
Sbjct: 4 KVRATHDYTAEDTDELTFEKGDVILVIPFDDPEEQDEGWLMGVKESTGCRGVFPENFTE 62
Score = 40.0 bits (94), Expect = 3e-05
Identities = 18/57 (31%), Positives = 24/57 (42%), Gaps = 5/57 (8%)
Query: 61 AIYPYKPQKDDELELRRGSVYTVT-----ERCQDGWFKGTSQRTQRSGVFPGNYVAP 112
A + Y + DEL +G V V E +GW G + T GVFP N+
Sbjct: 7 ATHDYTAEDTDELTFEKGDVILVIPFDDPEEQDEGWLMGVKESTGCRGVFPENFTER 63
>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 = 43.0 bits (101), Expect = 2e-06
Identities = 19/68 (27%), Positives = 33/68 (48%), Gaps = 15/68 (22%)
Query: 58 EYIAIYPYKPQKDDELELRRGSVYTVTERC---------------QDGWFKGTSQRTQRS 102
+Y A+Y YK +++++++L G + TV + + GW G ++ T
Sbjct: 3 QYRALYDYKKEREEDIDLHLGDILTVNKGSLLALGFSEGQEARPEEIGWLNGYNETTGER 62
Query: 103 GVFPGNYV 110
G FPG YV
Sbjct: 63 GDFPGTYV 70
Score = 33.3 bits (76), Expect = 0.008
Identities = 17/69 (24%), Positives = 33/69 (47%), Gaps = 15/69 (21%)
Query: 114 KFRCIVPYPPNSEYELELRVGDLIYVHK-------------KRDD--GWYKGTLQRTGRT 158
++R + Y E +++L +GD++ V+K R + GW G + TG
Sbjct: 3 QYRALYDYKKEREEDIDLHLGDILTVNKGSLLALGFSEGQEARPEEIGWLNGYNETTGER 62
Query: 159 GLFPASFMK 167
G FP ++++
Sbjct: 63 GDFPGTYVE 71
>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 = 42.6 bits (100), Expect = 3e-06
Identities = 19/52 (36%), Positives = 31/52 (59%), Gaps = 2/52 (3%)
Query: 59 YIAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYV 110
Y+A+Y + PQ++++L L+ G V + + W+KG S R G FP N+V
Sbjct: 2 YVALYKFLPQENNDLPLQPGDRVMVVDDSNEDWWKGKSG--DRVGFFPANFV 51
Score = 36.1 bits (83), Expect = 6e-04
Identities = 20/60 (33%), Positives = 30/60 (50%), Gaps = 8/60 (13%)
Query: 109 YVAPAKFRCIVPYPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFMKQ 168
YVA KF P +L L+ GD + V ++ W+KG R G FPA+F+++
Sbjct: 2 YVALYKFL------PQENNDLPLQPGDRVMVVDDSNEDWWKGKSG--DRVGFFPANFVQR 53
>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 = 42.3 bits (99), Expect = 3e-06
Identities = 21/55 (38%), Positives = 29/55 (52%), Gaps = 3/55 (5%)
Query: 58 EYIAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYVAP 112
EYIA+YPY + +L G VT++ + W T R+G+FP NYV P
Sbjct: 1 EYIALYPYSSSEPGDLTFNEGEEILVTQKDGEWW---TGSIEDRTGIFPSNYVRP 52
Score = 29.2 bits (65), Expect = 0.18
Identities = 15/48 (31%), Positives = 29/48 (60%), Gaps = 3/48 (6%)
Query: 120 PYPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFMK 167
PY + +L G+ I V +K D W+ G+++ RTG+FP+++++
Sbjct: 7 PYSSSEPGDLTFNEGEEILVTQK-DGEWWTGSIE--DRTGIFPSNYVR 51
>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 = 42.3 bits (99), Expect = 3e-06
Identities = 18/42 (42%), Positives = 29/42 (69%)
Query: 126 EYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFMK 167
E EL R G+ I + +K ++ WY+G + TGR G+FPAS+++
Sbjct: 14 EVELSFRKGEHICLIRKVNENWYEGRITGTGRQGIFPASYVQ 55
Score = 40.7 bits (95), Expect = 1e-05
Identities = 17/53 (32%), Positives = 28/53 (52%)
Query: 58 EYIAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYV 110
E +A Y +K + EL R+G + + + W++G T R G+FP +YV
Sbjct: 2 EAVAQYTFKGDLEVELSFRKGEHICLIRKVNENWYEGRITGTGRQGIFPASYV 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 = 42.3 bits (99), Expect = 3e-06
Identities = 19/50 (38%), Positives = 27/50 (54%)
Query: 116 RCIVPYPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASF 165
R + + P ELEL V D + V + +D WY+ RTG G+FPA +
Sbjct: 3 RAVFRFVPRHPDELELEVDDPLLVEVQAEDYWYEAYNMRTGARGIFPAYY 52
Score = 40.4 bits (94), Expect = 2e-05
Identities = 16/49 (32%), Positives = 26/49 (53%)
Query: 61 AIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNY 109
A++ + P+ DELEL V + +D W++ + RT G+FP Y
Sbjct: 4 AVFRFVPRHPDELELEVDDPLLVEVQAEDYWYEAYNMRTGARGIFPAYY 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 = 42.0 bits (99), Expect = 4e-06
Identities = 17/52 (32%), Positives = 28/52 (53%), Gaps = 2/52 (3%)
Query: 60 IAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYVA 111
+A+Y Y+ DDE+ + T E +GW++G + + G+FP NYV
Sbjct: 3 VALYDYQAADDDEISFDPDDIITNIEMIDEGWWRGVCR--GKYGLFPANYVE 52
Score = 33.9 bits (78), Expect = 0.003
Identities = 14/47 (29%), Positives = 27/47 (57%), Gaps = 2/47 (4%)
Query: 121 YPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFMK 167
Y + E+ D+I + D+GW++G + G+ GLFPA++++
Sbjct: 8 YQAADDDEISFDPDDIITNIEMIDEGWWRGVCR--GKYGLFPANYVE 52
>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 = 41.9 bits (98), Expect = 4e-06
Identities = 17/40 (42%), Positives = 29/40 (72%), Gaps = 2/40 (5%)
Query: 128 ELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFMK 167
EL L+ GD++Y++K+ D WY+G + GR G+FP S+++
Sbjct: 16 ELPLQKGDIVYIYKQIDQNWYEG--EHHGRVGIFPRSYIE 53
Score = 33.4 bits (76), Expect = 0.006
Identities = 14/50 (28%), Positives = 28/50 (56%), Gaps = 2/50 (4%)
Query: 61 AIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYV 110
A + +K Q EL L++G + + ++ W++G + R G+FP +Y+
Sbjct: 5 AKFDFKAQTLKELPLQKGDIVYIYKQIDQNWYEG--EHHGRVGIFPRSYI 52
>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 = 41.7 bits (98), Expect = 4e-06
Identities = 19/51 (37%), Positives = 28/51 (54%), Gaps = 1/51 (1%)
Query: 60 IAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYV 110
+A+Y Y + DEL + RG + V + D W+ G+ Q+ G FP NYV
Sbjct: 3 VALYDYTANRSDELTIHRGDIIRVLYKDNDNWWFGSLVNGQQ-GYFPANYV 52
Score = 36.3 bits (84), Expect = 5e-04
Identities = 18/46 (39%), Positives = 27/46 (58%), Gaps = 1/46 (2%)
Query: 121 YPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFM 166
Y N EL + GD+I V K +D W+ G+L G+ G FPA+++
Sbjct: 8 YTANRSDELTIHRGDIIRVLYKDNDNWWFGSLVN-GQQGYFPANYV 52
>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 = 42.0 bits (98), Expect = 4e-06
Identities = 21/59 (35%), Positives = 30/59 (50%), Gaps = 3/59 (5%)
Query: 112 PAKFRCIVPYPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRT---GLFPASFMK 167
P + I Y +L L G LI + KK GW++G LQ G+ G FPA+++K
Sbjct: 3 PEIAQVIASYTATGPEQLTLAPGQLILIRKKNPGGWWEGELQARGKKRQIGWFPANYVK 61
Score = 30.5 bits (68), Expect = 0.082
Identities = 15/52 (28%), Positives = 26/52 (50%), Gaps = 3/52 (5%)
Query: 62 IYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQ---RTQRSGVFPGNYV 110
I Y ++L L G + + ++ GW++G Q + ++ G FP NYV
Sbjct: 9 IASYTATGPEQLTLAPGQLILIRKKNPGGWWEGELQARGKKRQIGWFPANYV 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 = 41.8 bits (98), Expect = 4e-06
Identities = 21/49 (42%), Positives = 31/49 (63%), Gaps = 3/49 (6%)
Query: 121 YPPNSEYELELRVGDLIY-VHKKRDDGWYKGTLQRTGRTGLFPASFMKQ 168
Y E EL +RVG++I V K ++GW +G L GR G+FP +F+K+
Sbjct: 8 YDAVHEDELTIRVGEIIRNVKKLEEEGWLEGELN--GRRGMFPDNFVKE 54
Score = 39.4 bits (92), Expect = 3e-05
Identities = 20/58 (34%), Positives = 31/58 (53%), Gaps = 3/58 (5%)
Query: 58 EYIAIYPYKPQKDDELELRRGSVYTVTERCQ-DGWFKGTSQRTQRSGVFPGNYVAPAK 114
EYI Y Y +DEL +R G + ++ + +GW +G + R G+FP N+V K
Sbjct: 1 EYIVEYDYDAVHEDELTIRVGEIIRNVKKLEEEGWLEG--ELNGRRGMFPDNFVKEIK 56
>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 = 41.5 bits (98), Expect = 5e-06
Identities = 19/50 (38%), Positives = 27/50 (54%), Gaps = 5/50 (10%)
Query: 121 YPPNSEYELEL--RVGDLIY-VHKKRDDGWYKGTLQRTGRTGLFPASFMK 167
Y +E E EL G +I V + GW +GTL GRTGL P ++++
Sbjct: 6 YACKAEDESELSFEPGQIITNVQPSDEPGWLEGTLN--GRTGLIPENYVE 53
Score = 41.5 bits (98), Expect = 6e-06
Identities = 18/53 (33%), Positives = 26/53 (49%), Gaps = 3/53 (5%)
Query: 61 AIYPYKPQKDDELELRRGSVYT-VTERCQDGWFKGTSQRTQRSGVFPGNYVAP 112
A+Y K + + EL G + T V + GW +GT R+G+ P NYV
Sbjct: 4 ALYACKAEDESELSFEPGQIITNVQPSDEPGWLEGTLN--GRTGLIPENYVEF 54
>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 = 41.8 bits (98), Expect = 5e-06
Identities = 17/47 (36%), Positives = 29/47 (61%)
Query: 121 YPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFMK 167
+ ++ EL LR GD + + K+ D WY+G + T R G+FP S+++
Sbjct: 9 FNADTNVELSLRKGDRVVLLKQVDQNWYEGKIPGTNRQGIFPVSYVE 55
Score = 41.1 bits (96), Expect = 1e-05
Identities = 17/53 (32%), Positives = 28/53 (52%)
Query: 58 EYIAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYV 110
E +A Y + + EL LR+G + ++ W++G T R G+FP +YV
Sbjct: 2 EAVAKYNFNADTNVELSLRKGDRVVLLKQVDQNWYEGKIPGTNRQGIFPVSYV 54
>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 = 41.4 bits (98), Expect = 6e-06
Identities = 15/46 (32%), Positives = 28/46 (60%), Gaps = 2/46 (4%)
Query: 121 YPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRT-GRTGLFPASF 165
+ + E++L L+VGD + + ++ +GWY+G R G+FP S+
Sbjct: 8 FQGDGEHQLSLQVGDTVQILEE-CEGWYRGFSLRNKSLKGIFPKSY 52
Score = 37.6 bits (88), Expect = 2e-04
Identities = 18/52 (34%), Positives = 31/52 (59%), Gaps = 2/52 (3%)
Query: 60 IAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRS-GVFPGNYV 110
+AIY ++ + +L L+ G + E C +GW++G S R + G+FP +YV
Sbjct: 3 VAIYNFQGDGEHQLSLQVGDTVQILEEC-EGWYRGFSLRNKSLKGIFPKSYV 53
>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 = 41.5 bits (97), Expect = 6e-06
Identities = 19/53 (35%), Positives = 28/53 (52%), Gaps = 2/53 (3%)
Query: 58 EYIAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYV 110
+ I +Y Y Q DDEL +G + V + W+KG + + G+FP NYV
Sbjct: 2 QVIGMYDYTAQNDDELAFSKGQIINVLNKEDPDWWKG--ELNGQVGLFPSNYV 52
Score = 35.7 bits (82), Expect = 8e-04
Identities = 18/47 (38%), Positives = 27/47 (57%), Gaps = 2/47 (4%)
Query: 121 YPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFMK 167
Y ++ EL G +I V K D W+KG L G+ GLFP++++K
Sbjct: 9 YTAQNDDELAFSKGQIINVLNKEDPDWWKGEL--NGQVGLFPSNYVK 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 = 41.3 bits (97), Expect = 6e-06
Identities = 17/53 (32%), Positives = 26/53 (49%), Gaps = 2/53 (3%)
Query: 58 EYIAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYV 110
+YI YK + +DE+ G V V ++ DGW+K Q + G P Y+
Sbjct: 2 KYITTQAYKAENEDEIGFETGVVVEVIQKNLDGWWKIRYQ--GKEGWAPATYL 52
>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 = 41.3 bits (97), Expect = 6e-06
Identities = 20/51 (39%), Positives = 30/51 (58%), Gaps = 3/51 (5%)
Query: 61 AIYPYKPQKDDELELRRGSVYT-VTERCQDGWFKGTSQRTQRSGVFPGNYV 110
A+Y Y+ Q+ DEL + G + T + E + GW KG + R G++P NYV
Sbjct: 4 ALYDYEGQESDELSFKAGDILTKLEEEDEQGWCKG--RLDGRVGLYPANYV 52
Score = 32.8 bits (75), Expect = 0.008
Identities = 18/52 (34%), Positives = 28/52 (53%), Gaps = 3/52 (5%)
Query: 115 FRCIVPYPPNSEYELELRVGDLIYVHKKRDD-GWYKGTLQRTGRTGLFPASF 165
R + Y EL + GD++ ++ D+ GW KG L GR GL+PA++
Sbjct: 2 VRALYDYEGQESDELSFKAGDILTKLEEEDEQGWCKGRLD--GRVGLYPANY 51
>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 = 41.5 bits (97), Expect = 6e-06
Identities = 19/54 (35%), Positives = 29/54 (53%), Gaps = 1/54 (1%)
Query: 60 IAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYVAPA 113
+A+YPY +D+L ++G V E + W+K S T++ G P NYVA
Sbjct: 3 VALYPYDGIHEDDLSFKKGEKLKVIEEHGE-WWKARSLTTKKEGFIPSNYVAKV 55
>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 = 41.2 bits (97), Expect = 8e-06
Identities = 17/54 (31%), Positives = 28/54 (51%), Gaps = 4/54 (7%)
Query: 59 YIAIYPYKPQKDDELELRRGSVYTVTER--CQDGWFKGTSQRTQRSGVFPGNYV 110
Y A+Y ++ + DE+ + G + V E + GW G + ++G FP NYV
Sbjct: 2 YRALYAFEARNPDEISFQPGDIIQVDESQVAEPGWLAGELK--GKTGWFPANYV 53
Score = 38.5 bits (90), Expect = 9e-05
Identities = 17/54 (31%), Positives = 30/54 (55%), Gaps = 4/54 (7%)
Query: 114 KFRCIVPYPPNSEYELELRVGDLIYVHKKRD--DGWYKGTLQRTGRTGLFPASF 165
K+R + + + E+ + GD+I V + + GW G L+ G+TG FPA++
Sbjct: 1 KYRALYAFEARNPDEISFQPGDIIQVDESQVAEPGWLAGELK--GKTGWFPANY 52
>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 = 41.2 bits (97), Expect = 8e-06
Identities = 19/46 (41%), Positives = 29/46 (63%), Gaps = 3/46 (6%)
Query: 123 PNSEYELELRVGDLIYVHKKRD-DGWYKGTLQRTGRTGLFPASFMK 167
++E EL R GD+I V + D DG+Y G L G+ GL P++F++
Sbjct: 17 VDAEVELSFRAGDIITVFGEMDEDGFYYGELN--GQRGLVPSNFLE 60
>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 = 41.0 bits (96), Expect = 8e-06
Identities = 16/47 (34%), Positives = 28/47 (59%), Gaps = 2/47 (4%)
Query: 121 YPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFMK 167
+P +L L G+++Y+ +K D WY+G + TG+FPA+ +K
Sbjct: 8 FPAEHSDDLSLNSGEIVYLLEKIDTEWYRGKCK--NTTGIFPANHVK 52
Score = 32.2 bits (73), Expect = 0.016
Identities = 12/51 (23%), Positives = 27/51 (52%), Gaps = 2/51 (3%)
Query: 60 IAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYV 110
+ ++ + + D+L L G + + E+ W++G + +G+FP N+V
Sbjct: 3 VVLHDFPAEHSDDLSLNSGEIVYLLEKIDTEWYRGKCK--NTTGIFPANHV 51
>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 = 41.3 bits (96), Expect = 9e-06
Identities = 15/55 (27%), Positives = 30/55 (54%)
Query: 59 YIAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYVAPA 113
++A+Y Y+ + + +L ++G + + W+ S T ++G P NYVAP+
Sbjct: 2 FVALYDYESRTETDLSFKKGERLQIVNNTEGDWWLAHSLTTGQTGYIPSNYVAPS 56
Score = 27.0 bits (59), Expect = 1.3
Identities = 12/55 (21%), Positives = 26/55 (47%)
Query: 115 FRCIVPYPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFMKQS 169
F + Y +E +L + G+ + + + W+ TG+TG P++++ S
Sbjct: 2 FVALYDYESRTETDLSFKKGERLQIVNNTEGDWWLAHSLTTGQTGYIPSNYVAPS 56
>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 = 40.8 bits (96), Expect = 9e-06
Identities = 18/50 (36%), Positives = 27/50 (54%), Gaps = 1/50 (2%)
Query: 61 AIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYV 110
A+Y Y+ D E+ G + T E+ +GW++GT G+FP NYV
Sbjct: 4 ALYDYQAADDTEISFDPGDIITDIEQIDEGWWRGTGP-DGTYGLFPANYV 52
Score = 35.1 bits (81), Expect = 0.001
Identities = 17/52 (32%), Positives = 30/52 (57%), Gaps = 1/52 (1%)
Query: 116 RCIVPYPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFMK 167
R + Y + E+ GD+I ++ D+GW++GT G GLFPA++++
Sbjct: 3 RALYDYQAADDTEISFDPGDIITDIEQIDEGWWRGTGP-DGTYGLFPANYVE 53
>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 = 41.1 bits (97), Expect = 9e-06
Identities = 21/56 (37%), Positives = 30/56 (53%), Gaps = 7/56 (12%)
Query: 116 RCIVPYPP-NSEYELELRVGDLIYVHKKRD-----DGWYKGTLQRTGRTGLFPASF 165
R + + P N E EL L+ GD++ V K D W+KG R GR G FP+++
Sbjct: 3 RALYDFTPENPEMELSLKKGDIVAVLSKTDPLGRDSEWWKGRT-RDGRIGWFPSNY 57
Score = 36.5 bits (85), Expect = 4e-04
Identities = 19/56 (33%), Positives = 28/56 (50%), Gaps = 7/56 (12%)
Query: 61 AIYPYKPQKDD-ELELRRGSVYTV-----TERCQDGWFKGTSQRTQRSGVFPGNYV 110
A+Y + P+ + EL L++G + V W+KG + R R G FP NYV
Sbjct: 4 ALYDFTPENPEMELSLKKGDIVAVLSKTDPLGRDSEWWKGRT-RDGRIGWFPSNYV 58
>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 = 40.7 bits (96), Expect = 1e-05
Identities = 19/55 (34%), Positives = 30/55 (54%), Gaps = 2/55 (3%)
Query: 58 EYIAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYVAP 112
Y+AI Y+ Q DDE+ L+ G V V E+ GW+ ++ + G P +Y+ P
Sbjct: 1 SYVAIADYEAQGDDEISLQEGEVVEVLEKNDSGWW--YVRKGDKEGWVPASYLEP 53
Score = 36.5 bits (85), Expect = 3e-04
Identities = 14/54 (25%), Positives = 30/54 (55%), Gaps = 2/54 (3%)
Query: 114 KFRCIVPYPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFMK 167
+ I Y + E+ L+ G+++ V +K D GW+ +++ + G PAS+++
Sbjct: 1 SYVAIADYEAQGDDEISLQEGEVVEVLEKNDSGWW--YVRKGDKEGWVPASYLE 52
>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 = 40.6 bits (95), Expect = 1e-05
Identities = 22/51 (43%), Positives = 29/51 (56%), Gaps = 2/51 (3%)
Query: 116 RCIVPYPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFM 166
R I + P+ EL L GD+I V K D+ W GT + G TG FP+SF+
Sbjct: 3 RAIFDFCPSVSEELPLFAGDVIEVLKVVDEFWLLGT--KEGVTGQFPSSFV 51
Score = 29.0 bits (65), Expect = 0.21
Identities = 16/50 (32%), Positives = 24/50 (48%), Gaps = 2/50 (4%)
Query: 61 AIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYV 110
AI+ + P +EL L G V V + + W GT + G FP ++V
Sbjct: 4 AIFDFCPSVSEELPLFAGDVIEVLKVVDEFWLLGTKEGVT--GQFPSSFV 51
>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 = 40.8 bits (96), Expect = 1e-05
Identities = 18/46 (39%), Positives = 28/46 (60%), Gaps = 2/46 (4%)
Query: 123 PNSEYELELRVGDLIYVHKKRD-DGWYKGTLQRTGRTGLFPASFMK 167
+ E EL GD++ V+ D DG+Y G L+ GR GL P++F++
Sbjct: 17 DDPEEELSFHAGDVVRVYGPMDEDGFYYGELEG-GRKGLVPSNFVQ 61
>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 = 40.8 bits (95), Expect = 1e-05
Identities = 17/53 (32%), Positives = 31/53 (58%), Gaps = 2/53 (3%)
Query: 116 RCIVPYPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFMKQ 168
R + + + EL + GD +Y+ +K D WY+G + GR G+FP S++++
Sbjct: 4 RAVYDFKAQTSKELSFKKGDTVYILRKIDQNWYEG--EHHGRVGIFPISYVEK 54
Score = 34.6 bits (79), Expect = 0.002
Identities = 15/50 (30%), Positives = 26/50 (52%), Gaps = 2/50 (4%)
Query: 61 AIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYV 110
A+Y +K Q EL ++G + + W++G + R G+FP +YV
Sbjct: 5 AVYDFKAQTSKELSFKKGDTVYILRKIDQNWYEG--EHHGRVGIFPISYV 52
>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 = 40.6 bits (95), Expect = 1e-05
Identities = 17/52 (32%), Positives = 26/52 (50%), Gaps = 1/52 (1%)
Query: 60 IAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYVA 111
+A+Y Y+P D +L +G + E W+K S T + G P N+VA
Sbjct: 3 VALYSYEPSHDGDLGFEKGEKLRILE-QSGEWWKAQSLTTGQEGFIPFNFVA 53
>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 = 40.5 bits (95), Expect = 1e-05
Identities = 21/56 (37%), Positives = 30/56 (53%), Gaps = 8/56 (14%)
Query: 110 VAPAKFRCIVPYPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASF 165
VA +F+ + P EL+ VGD I + +DGW +G L+ GR G+FP F
Sbjct: 3 VALYRFQALEPN------ELDFEVGDRIRIIATLEDGWLEGELK--GRRGIFPHRF 50
Score = 28.9 bits (65), Expect = 0.20
Identities = 13/47 (27%), Positives = 25/47 (53%), Gaps = 2/47 (4%)
Query: 60 IAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFP 106
+A+Y ++ + +EL+ G + +DGW +G + R G+FP
Sbjct: 3 VALYRFQALEPNELDFEVGDRIRIIATLEDGWLEGELK--GRRGIFP 47
>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 = 40.2 bits (94), Expect = 2e-05
Identities = 20/52 (38%), Positives = 29/52 (55%), Gaps = 2/52 (3%)
Query: 61 AIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYVAP 112
A++ + PQ+D EL RRG V + W+KG ++G+FP NYV P
Sbjct: 4 ALFDFDPQEDGELGFRRGDFIEVMDNSDPNWWKGACH--GQTGMFPRNYVTP 53
Score = 38.3 bits (89), Expect = 1e-04
Identities = 17/52 (32%), Positives = 27/52 (51%), Gaps = 2/52 (3%)
Query: 116 RCIVPYPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFMK 167
+ + + P + EL R GD I V D W+KG G+TG+FP +++
Sbjct: 3 QALFDFDPQEDGELGFRRGDFIEVMDNSDPNWWKGACH--GQTGMFPRNYVT 52
>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 = 40.4 bits (94), Expect = 2e-05
Identities = 22/53 (41%), Positives = 24/53 (45%), Gaps = 4/53 (7%)
Query: 61 AIYPYKPQKDDELELRRGSVYTVTERCQD----GWFKGTSQRTQRSGVFPGNY 109
A++ YKPQ DEL L G V Q GW G S RT G P NY
Sbjct: 5 ALFQYKPQNIDELMLSPGDYIFVDPTQQSEASEGWVIGISHRTGCRGFLPENY 57
Score = 35.8 bits (82), Expect = 8e-04
Identities = 18/58 (31%), Positives = 26/58 (44%), Gaps = 4/58 (6%)
Query: 115 FRCIVPYPPNSEYELELRVGDLIYVHKKRDD----GWYKGTLQRTGRTGLFPASFMKQ 168
R + Y P + EL L GD I+V + GW G RTG G P ++ ++
Sbjct: 3 LRALFQYKPQNIDELMLSPGDYIFVDPTQQSEASEGWVIGISHRTGCRGFLPENYTER 60
>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 = 40.2 bits (94), Expect = 2e-05
Identities = 17/51 (33%), Positives = 26/51 (50%)
Query: 62 IYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYVAP 112
I YK Q++DEL L + + V ++ DGW +G G FP ++V
Sbjct: 5 IRSYKAQENDELTLEKADIIMVRQQSSDGWLEGVRLSDGERGWFPQSHVEE 55
Score = 37.8 bits (88), Expect = 1e-04
Identities = 18/51 (35%), Positives = 24/51 (47%)
Query: 117 CIVPYPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFMK 167
CI Y EL L D+I V ++ DGW +G G G FP S ++
Sbjct: 4 CIRSYKAQENDELTLEKADIIMVRQQSSDGWLEGVRLSDGERGWFPQSHVE 54
>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 = 40.0 bits (93), Expect = 2e-05
Identities = 20/47 (42%), Positives = 28/47 (59%), Gaps = 2/47 (4%)
Query: 121 YPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFMK 167
Y N+E EL G LI V K D W++G + G TGLFP++++K
Sbjct: 9 YTANNEDELSFSKGQLINVLNKDDPDWWQGEIN--GVTGLFPSNYVK 53
Score = 38.8 bits (90), Expect = 5e-05
Identities = 17/53 (32%), Positives = 28/53 (52%), Gaps = 2/53 (3%)
Query: 58 EYIAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYV 110
+ IA+Y Y +DEL +G + V + W++G + +G+FP NYV
Sbjct: 2 QVIAMYDYTANNEDELSFSKGQLINVLNKDDPDWWQG--EINGVTGLFPSNYV 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 = 40.0 bits (94), Expect = 2e-05
Identities = 17/50 (34%), Positives = 28/50 (56%), Gaps = 1/50 (2%)
Query: 61 AIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYV 110
A+Y Y+ Q+ DEL + ++ T E+ GW++G ++ FP NYV
Sbjct: 4 ALYDYRAQRPDELSFCKHAIITNVEKEDGGWWRG-DYGGKKQKWFPANYV 52
Score = 27.3 bits (61), Expect = 0.76
Identities = 12/48 (25%), Positives = 22/48 (45%), Gaps = 1/48 (2%)
Query: 121 YPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFMKQ 168
Y EL +I +K D GW++G + FPA+++++
Sbjct: 8 YRAQRPDELSFCKHAIITNVEKEDGGWWRGDYG-GKKQKWFPANYVEE 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 = 40.0 bits (93), Expect = 2e-05
Identities = 20/54 (37%), Positives = 28/54 (51%), Gaps = 3/54 (5%)
Query: 58 EYIAIYPYKPQKDDELELRRGSVYTV-TERCQDGWFKGTSQRTQRSGVFPGNYV 110
E IA Y +K DDEL +RG + V E C W+K ++ + G P NY+
Sbjct: 2 EAIAKYDFKATADDELSFKRGDILKVLNEECDQNWYK--AELNGKDGFIPKNYI 53
>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 = 39.7 bits (93), Expect = 3e-05
Identities = 16/50 (32%), Positives = 26/50 (52%), Gaps = 2/50 (4%)
Query: 116 RCIVPYPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASF 165
+ + Y +L + GD+I + K+ D+ WY G G+ G FPAS+
Sbjct: 3 KALYNYEGKEPGDLSFKKGDIILLRKRIDENWYHGECN--GKQGFFPASY 50
Score = 35.0 bits (81), Expect = 0.002
Identities = 14/50 (28%), Positives = 27/50 (54%), Gaps = 2/50 (4%)
Query: 61 AIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYV 110
A+Y Y+ ++ +L ++G + + +R + W+ G Q G FP +YV
Sbjct: 4 ALYNYEGKEPGDLSFKKGDIILLRKRIDENWYHGECNGKQ--GFFPASYV 51
>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 = 39.6 bits (93), Expect = 3e-05
Identities = 18/53 (33%), Positives = 27/53 (50%), Gaps = 1/53 (1%)
Query: 61 AIYPYKPQKDDELELRRGSVYT-VTERCQDGWFKGTSQRTQRSGVFPGNYVAP 112
A+YP+ + +L G V T + +DGW G ++R+ R G FP Y P
Sbjct: 5 ALYPHAAGGETQLSFEEGDVITLLGPEPRDGWHYGENERSGRRGWFPIAYTEP 57
Score = 39.2 bits (92), Expect = 4e-05
Identities = 16/56 (28%), Positives = 30/56 (53%), Gaps = 1/56 (1%)
Query: 114 KFRCIVPYPPNSEYELELRVGDLI-YVHKKRDDGWYKGTLQRTGRTGLFPASFMKQ 168
+ + + P+ E +L GD+I + + DGW+ G +R+GR G FP ++ +
Sbjct: 2 RVKALYPHAAGGETQLSFEEGDVITLLGPEPRDGWHYGENERSGRRGWFPIAYTEP 57
>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 = 39.4 bits (92), Expect = 3e-05
Identities = 16/45 (35%), Positives = 24/45 (53%), Gaps = 2/45 (4%)
Query: 121 YPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASF 165
+ +E +L + GD I V + D W +G L GR G+FP +F
Sbjct: 8 FTGETEEDLSFQRGDRILVTEHLDAEWSRGRLN--GREGIFPRAF 50
Score = 32.8 bits (75), Expect = 0.009
Identities = 14/50 (28%), Positives = 25/50 (50%), Gaps = 2/50 (4%)
Query: 60 IAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNY 109
+A+Y + + +++L +RG VTE W +G R G+FP +
Sbjct: 3 VALYDFTGETEEDLSFQRGDRILVTEHLDAEWSRGRLN--GREGIFPRAF 50
>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 = 39.8 bits (93), Expect = 3e-05
Identities = 18/50 (36%), Positives = 32/50 (64%), Gaps = 2/50 (4%)
Query: 118 IVPYPPNSEYELELRVGDLIYVHKKRDDGWYKG-TLQRTGRTGLFPASFM 166
I Y EL L++GD +++ + + GWY+G TL++ + G+FPAS++
Sbjct: 5 IYNYDARGPDELSLQIGDTVHILETYE-GWYRGYTLRKKSKKGIFPASYI 53
Score = 38.6 bits (90), Expect = 7e-05
Identities = 18/52 (34%), Positives = 31/52 (59%), Gaps = 2/52 (3%)
Query: 60 IAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKG-TSQRTQRSGVFPGNYV 110
+AIY Y + DEL L+ G + E +GW++G T ++ + G+FP +Y+
Sbjct: 3 VAIYNYDARGPDELSLQIGDTVHILE-TYEGWYRGYTLRKKSKKGIFPASYI 53
>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 = 39.2 bits (91), Expect = 4e-05
Identities = 18/53 (33%), Positives = 30/53 (56%), Gaps = 2/53 (3%)
Query: 58 EYIAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYV 110
+Y IYPY + DE+ L +G+V V ++ +GW+K Q + G P +Y+
Sbjct: 2 KYTVIYPYTARDQDEINLEKGAVVEVIQKNLEGWWKIRYQGKE--GWAPASYL 52
Score = 35.0 bits (80), Expect = 0.001
Identities = 18/55 (32%), Positives = 32/55 (58%), Gaps = 2/55 (3%)
Query: 114 KFRCIVPYPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFMKQ 168
K+ I PY + E+ L G ++ V +K +GW+K ++ G+ G PAS++K+
Sbjct: 2 KYTVIYPYTARDQDEINLEKGAVVEVIQKNLEGWWK--IRYQGKEGWAPASYLKK 54
>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 = 39.2 bits (92), Expect = 4e-05
Identities = 14/53 (26%), Positives = 26/53 (49%), Gaps = 1/53 (1%)
Query: 60 IAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYVAP 112
+A+Y ++P + +L L +G Y V + + W++ + G P NYV
Sbjct: 3 VALYDFQPIEPGDLPLEKGEEYVVLDDSNEHWWRARDKNGN-EGYIPSNYVTE 54
>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 = 39.2 bits (91), Expect = 5e-05
Identities = 17/50 (34%), Positives = 30/50 (60%), Gaps = 2/50 (4%)
Query: 61 AIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYV 110
AIY ++ +D+EL + G + T+ + W+KG + Q +G+FP N+V
Sbjct: 5 AIYDFEAAEDNELTFKAGDIITILDDSDPNWWKGETP--QGTGLFPSNFV 52
Score = 34.5 bits (79), Expect = 0.002
Identities = 18/53 (33%), Positives = 28/53 (52%), Gaps = 2/53 (3%)
Query: 114 KFRCIVPYPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFM 166
K R I + + EL + GD+I + D W+KG + TGLFP++F+
Sbjct: 2 KVRAIYDFEAAEDNELTFKAGDIITILDDSDPNWWKGETPQG--TGLFPSNFV 52
>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 = 38.9 bits (91), Expect = 5e-05
Identities = 16/54 (29%), Positives = 31/54 (57%), Gaps = 6/54 (11%)
Query: 60 IAIYPYKPQKDDELELRRGSVYTVTER--CQDGWFKGTSQRT-QRSGVFPGNYV 110
+A+Y + ++ +L ++G + T+ ++ Q+ W+ G R R G+FP NYV
Sbjct: 3 VALYDFAGEQPGDLAFQKGDIITILKKSDSQNDWWTG---RIGGREGIFPANYV 53
Score = 35.5 bits (82), Expect = 0.001
Identities = 16/50 (32%), Positives = 28/50 (56%), Gaps = 6/50 (12%)
Query: 121 YPPNSEYELELRVGDLIYVHKKRD--DGWYKGTLQRTG-RTGLFPASFMK 167
+ +L + GD+I + KK D + W+ G R G R G+FPA++++
Sbjct: 8 FAGEQPGDLAFQKGDIITILKKSDSQNDWWTG---RIGGREGIFPANYVE 54
>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 = 38.8 bits (91), Expect = 5e-05
Identities = 15/39 (38%), Positives = 23/39 (58%), Gaps = 1/39 (2%)
Query: 128 ELELRVGDLIYVHKKRDDGWYKGTLQRT-GRTGLFPASF 165
EL G++I V + DD W++G ++ R G+FP SF
Sbjct: 15 ELTFSEGEIIVVTGEEDDEWWEGHIEGDPSRRGVFPVSF 53
Score = 33.8 bits (78), Expect = 0.004
Identities = 17/50 (34%), Positives = 25/50 (50%), Gaps = 1/50 (2%)
Query: 61 AIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRT-QRSGVFPGNY 109
A+Y + DDEL G + VT D W++G + R GVFP ++
Sbjct: 4 ALYDCQADNDDELTFSEGEIIVVTGEEDDEWWEGHIEGDPSRRGVFPVSF 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 = 38.9 bits (91), Expect = 5e-05
Identities = 18/53 (33%), Positives = 29/53 (54%), Gaps = 4/53 (7%)
Query: 61 AIYPYKPQKDDELELRRGSVYTVTERC--QDGWFKGTSQRTQRSGVFPGNYVA 111
A+Y ++ Q+ +L + G TV R Q W++G + R G+FP NYV+
Sbjct: 4 ALYSFEGQQPCDLSFQAGDRITVLTRTDSQFDWWEGRLR--GRVGIFPANYVS 54
Score = 36.2 bits (84), Expect = 4e-04
Identities = 15/42 (35%), Positives = 25/42 (59%), Gaps = 4/42 (9%)
Query: 128 ELELRVGDLIYVHKKRD--DGWYKGTLQRTGRTGLFPASFMK 167
+L + GD I V + D W++G L+ GR G+FPA+++
Sbjct: 15 DLSFQAGDRITVLTRTDSQFDWWEGRLR--GRVGIFPANYVS 54
>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 = 39.1 bits (91), Expect = 5e-05
Identities = 19/55 (34%), Positives = 26/55 (47%)
Query: 114 KFRCIVPYPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFMKQ 168
+ I Y EL L+ D++ V + DGWY G R G G FP+S K+
Sbjct: 1 QVEIIKAYTAKQPDELSLQQADVVLVLQTESDGWYYGERLRDGERGWFPSSCAKE 55
Score = 31.7 bits (72), Expect = 0.025
Identities = 16/46 (34%), Positives = 22/46 (47%)
Query: 61 AIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFP 106
I Y ++ DEL L++ V V + DGW+ G R G FP
Sbjct: 4 IIKAYTAKQPDELSLQQADVVLVLQTESDGWYYGERLRDGERGWFP 49
>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 = 38.6 bits (90), Expect = 7e-05
Identities = 18/53 (33%), Positives = 29/53 (54%)
Query: 114 KFRCIVPYPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFM 166
K + + + +E +L GDLI V D W+ G L+R G G+FP++F+
Sbjct: 1 KVKAVYSWAGETEGDLGFLEGDLIEVLSIGDGSWWSGKLRRNGAEGIFPSNFV 53
Score = 34.4 bits (79), Expect = 0.002
Identities = 13/50 (26%), Positives = 23/50 (46%)
Query: 61 AIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYV 110
A+Y + + + +L G + V W+ G +R G+FP N+V
Sbjct: 4 AVYSWAGETEGDLGFLEGDLIEVLSIGDGSWWSGKLRRNGAEGIFPSNFV 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 = 38.2 bits (89), Expect = 9e-05
Identities = 17/52 (32%), Positives = 25/52 (48%), Gaps = 2/52 (3%)
Query: 61 AIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYVAP 112
A Y + + +L RRG + V + W++G + R G FP NYV P
Sbjct: 4 AQYDFSAEDPSQLSFRRGDIIEVLDCPDPNWWRGRI--SGRVGFFPRNYVHP 53
Score = 35.2 bits (81), Expect = 0.001
Identities = 14/48 (29%), Positives = 24/48 (50%), Gaps = 2/48 (4%)
Query: 121 YPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFMKQ 168
+ +L R GD+I V D W++G + +GR G FP +++
Sbjct: 8 FSAEDPSQLSFRRGDIIEVLDCPDPNWWRGRI--SGRVGFFPRNYVHP 53
>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 = 38.3 bits (89), Expect = 9e-05
Identities = 16/56 (28%), Positives = 26/56 (46%), Gaps = 3/56 (5%)
Query: 59 YIAIYPYKPQKDDELELRRGSVYTVTERCQDGWF---KGTSQRTQRSGVFPGNYVA 111
Y A++ +K + D+EL + G + + ER D W + G P NY+A
Sbjct: 2 YKALWDFKARGDEELSFQAGDQFRIAERSGDWWTALKLDRAGGVVAQGFVPNNYLA 57
>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 = 38.3 bits (89), Expect = 9e-05
Identities = 16/40 (40%), Positives = 27/40 (67%), Gaps = 2/40 (5%)
Query: 128 ELELRVGDLIYVHKKRDDGWYKGTLQR-TGRTGLFPASFM 166
+L L++GD++++ + +D WYKG L R G+FP SF+
Sbjct: 15 QLSLQIGDVVHIQETCED-WYKGYLVRHKDLQGIFPKSFI 53
Score = 32.1 bits (73), Expect = 0.016
Identities = 17/52 (32%), Positives = 29/52 (55%), Gaps = 2/52 (3%)
Query: 60 IAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQ-RSGVFPGNYV 110
+AIY +K +L L+ G V + E C + W+KG R + G+FP +++
Sbjct: 3 VAIYNFKGSGVPQLSLQIGDVVHIQETC-EDWYKGYLVRHKDLQGIFPKSFI 53
>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 = 38.3 bits (89), Expect = 1e-04
Identities = 17/51 (33%), Positives = 26/51 (50%), Gaps = 1/51 (1%)
Query: 60 IAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYV 110
+A+Y Y P +L+LR+G Y + E W++ + R G P NYV
Sbjct: 4 VALYDYTPMNAQDLQLRKGEEYVILEESNLPWWRA-RDKNGREGYIPSNYV 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 = 38.0 bits (89), Expect = 1e-04
Identities = 15/50 (30%), Positives = 25/50 (50%), Gaps = 1/50 (2%)
Query: 61 AIYPYKPQKDDELELRRGSVYTVTER-CQDGWFKGTSQRTQRSGVFPGNY 109
A+Y Y+ Q EL +G + V Q W++ T+ T + G+ P +Y
Sbjct: 4 ALYDYRAQTPGELSFSKGDFFHVIGEEDQGEWYEATNPVTGKRGLVPKSY 53
Score = 30.3 bits (69), Expect = 0.064
Identities = 16/51 (31%), Positives = 24/51 (47%), Gaps = 1/51 (1%)
Query: 116 RCIVPYPPNSEYELELRVGDLIYV-HKKRDDGWYKGTLQRTGRTGLFPASF 165
R + Y + EL GD +V ++ WY+ T TG+ GL P S+
Sbjct: 3 RALYDYRAQTPGELSFSKGDFFHVIGEEDQGEWYEATNPVTGKRGLVPKSY 53
>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 = 38.0 bits (88), Expect = 1e-04
Identities = 17/53 (32%), Positives = 32/53 (60%), Gaps = 2/53 (3%)
Query: 115 FRCIVPYPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFMK 167
+R I Y +S+ E+ L+ GD++ V +K ++GW+ Q + G PAS+++
Sbjct: 2 YRAIADYEKSSKSEMALKTGDVVEVVEKSENGWW--FCQLKAKRGWVPASYLE 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 = 38.4 bits (89), Expect = 1e-04
Identities = 19/51 (37%), Positives = 28/51 (54%), Gaps = 2/51 (3%)
Query: 61 AIYPYKPQKDDELELRRG-SVYTVTERCQDGWFKGTSQRTQRSGVFPGNYV 110
A+Y Y Q+ DEL + G + + E + GW KG + R G++P NYV
Sbjct: 6 ALYDYTGQEADELSFKAGEELLKIGEEDEQGWCKGRLL-SGRIGLYPANYV 55
Score = 34.2 bits (78), Expect = 0.004
Identities = 17/55 (30%), Positives = 32/55 (58%), Gaps = 2/55 (3%)
Query: 114 KFRCIVPYPPNSEYELELRVGD-LIYVHKKRDDGWYKGTLQRTGRTGLFPASFMK 167
+ R + Y EL + G+ L+ + ++ + GW KG L +GR GL+PA++++
Sbjct: 3 RVRALYDYTGQEADELSFKAGEELLKIGEEDEQGWCKGRLL-SGRIGLYPANYVE 56
>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 = 38.1 bits (88), Expect = 1e-04
Identities = 16/51 (31%), Positives = 28/51 (54%), Gaps = 2/51 (3%)
Query: 61 AIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYVA 111
A+Y ++ +D+EL + G + V + W+KG + R G+FP N+V
Sbjct: 6 ALYDFEAVEDNELTFKHGEIIIVLDDSDANWWKGENHRG--VGLFPSNFVT 54
Score = 35.0 bits (80), Expect = 0.001
Identities = 17/56 (30%), Positives = 27/56 (48%), Gaps = 2/56 (3%)
Query: 114 KFRCIVPYPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFMKQS 169
K R + + + EL + G++I V D W+KG R GLFP++F+
Sbjct: 3 KVRALYDFEAVEDNELTFKHGEIIIVLDDSDANWWKGENHRG--VGLFPSNFVTTD 56
>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 = 37.9 bits (88), Expect = 1e-04
Identities = 18/55 (32%), Positives = 32/55 (58%), Gaps = 4/55 (7%)
Query: 116 RCIVPYPPNSEYELELRVGDLIYVHKKR--DDGWYKGTLQRTGRTGLFPASFMKQ 168
+ + Y +E EL+ + G++I + K + GW+KG L G+ G+FP +F+ Q
Sbjct: 5 KALFHYEGTNEDELDFKEGEIILIISKDTGEPGWWKGELN--GKEGVFPDNFVSQ 57
Score = 37.5 bits (87), Expect = 2e-04
Identities = 16/53 (30%), Positives = 31/53 (58%), Gaps = 4/53 (7%)
Query: 61 AIYPYKPQKDDELELRRGSVYTVT--ERCQDGWFKGTSQRTQRSGVFPGNYVA 111
A++ Y+ +DEL+ + G + + + + GW+KG + + GVFP N+V+
Sbjct: 6 ALFHYEGTNEDELDFKEGEIILIISKDTGEPGWWKG--ELNGKEGVFPDNFVS 56
>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 = 37.6 bits (87), Expect = 2e-04
Identities = 17/49 (34%), Positives = 24/49 (48%)
Query: 62 IYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYV 110
++PY Q+ DEL L V + ++ DGW G Q G FP + V
Sbjct: 5 VHPYVSQEPDELSLELADVLNILDKTDDGWIFGERLHDQERGWFPSSVV 53
Score = 36.5 bits (84), Expect = 5e-04
Identities = 17/53 (32%), Positives = 27/53 (50%)
Query: 116 RCIVPYPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFMKQ 168
+C+ PY EL L + D++ + K DDGW G G FP+S +++
Sbjct: 3 QCVHPYVSQEPDELSLELADVLNILDKTDDGWIFGERLHDQERGWFPSSVVEE 55
>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 = 37.8 bits (87), Expect = 2e-04
Identities = 21/50 (42%), Positives = 31/50 (62%), Gaps = 3/50 (6%)
Query: 61 AIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYV 110
A+YP++ +KD+ L + V TV E+ QD W+ G Q Q+ G FP +YV
Sbjct: 4 ALYPWRAKKDNHLNFNKNDVITVLEQ-QDMWWFGEVQ-GQK-GWFPKSYV 50
>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 = 37.6 bits (87), Expect = 2e-04
Identities = 20/50 (40%), Positives = 26/50 (52%), Gaps = 3/50 (6%)
Query: 121 YPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRT---GLFPASFMK 167
Y + +L L G LI + KK GW+ G LQ G+ G FPAS +K
Sbjct: 8 YVASGVEQLSLSPGQLILILKKNSSGWWLGELQARGKKRQKGWFPASHVK 57
>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 = 37.5 bits (87), Expect = 2e-04
Identities = 15/51 (29%), Positives = 26/51 (50%), Gaps = 1/51 (1%)
Query: 60 IAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYV 110
+A+Y ++P + +L L G Y + E+ W+K + + G P NYV
Sbjct: 4 VAMYDFQPTEPHDLRLETGEEYVILEKNDVHWWKARDKYGKE-GYIPSNYV 53
>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 = 37.7 bits (87), Expect = 2e-04
Identities = 18/57 (31%), Positives = 31/57 (54%), Gaps = 1/57 (1%)
Query: 54 TFVPEYIAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYV 110
TF A++ YK Q++DEL + ++ E+ + GW++G ++ FP NYV
Sbjct: 1 TFKCAVKALFDYKAQREDELTFTKNAIIQNVEKQEGGWWRGDYG-GKKQLWFPSNYV 56
>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 = 37.3 bits (86), Expect = 2e-04
Identities = 17/57 (29%), Positives = 33/57 (57%), Gaps = 4/57 (7%)
Query: 111 APAKFRCIVPYPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFMK 167
A AKF + +++ E+ R G+ I + ++ D+ WY+G + T R G+FP +++
Sbjct: 3 AIAKFN----FNGDTQVEMSFRKGERITLLRQVDENWYEGRIPGTSRQGIFPITYVD 55
Score = 36.9 bits (85), Expect = 4e-04
Identities = 16/53 (30%), Positives = 26/53 (49%)
Query: 58 EYIAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYV 110
E IA + + E+ R+G T+ + + W++G T R G+FP YV
Sbjct: 2 EAIAKFNFNGDTQVEMSFRKGERITLLRQVDENWYEGRIPGTSRQGIFPITYV 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 = 37.3 bits (87), Expect = 2e-04
Identities = 12/55 (21%), Positives = 28/55 (50%), Gaps = 1/55 (1%)
Query: 58 EYIAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYVAP 112
Y A+ ++ +++ +L ++G V + + DGW+ + + R G+ P Y+
Sbjct: 1 LYEALSDFQAEQEGDLSFKKGEVLRIISKRADGWWLAENSKGNR-GLVPKTYLKV 54
Score = 34.6 bits (80), Expect = 0.002
Identities = 12/40 (30%), Positives = 22/40 (55%), Gaps = 1/40 (2%)
Query: 128 ELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFMK 167
+L + G+++ + KR DGW+ G GL P +++K
Sbjct: 15 DLSFKKGEVLRIISKRADGWWLAE-NSKGNRGLVPKTYLK 53
>gnl|CDD|227827 COG5540, COG5540, RING-finger-containing ubiquitin ligase
[Posttranslational modification, protein turnover,
chaperones].
Length = 374
Score = 40.4 bits (94), Expect = 2e-04
Identities = 15/49 (30%), Positives = 27/49 (55%), Gaps = 3/49 (6%)
Query: 11 ECSVCLDRLDTSSK--VLPCQHTFCKKCLEEIVSSHKELRCPECPTFVP 57
EC++C+ + + VLPC H F C+++ + + +CP C T +P
Sbjct: 325 ECAICMSNFIKNDRLRVLPCDHRFHVGCVDKWLLGYS-NKCPVCRTAIP 372
>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 = 37.1 bits (86), Expect = 2e-04
Identities = 19/55 (34%), Positives = 27/55 (49%), Gaps = 3/55 (5%)
Query: 59 YIAIYPYKPQKDDELELRRGSVYTVTERCQDG-WFKGTSQRTQRSGVFPGNYVAP 112
IA Y + P + +L+L++G V DG W+ S T + G P NYVA
Sbjct: 2 VIAQYDFVPSNERDLQLKKGEKLQVL--KSDGEWWLAKSLTTGKEGYIPSNYVAR 54
Score = 26.7 bits (59), Expect = 1.4
Identities = 13/46 (28%), Positives = 28/46 (60%), Gaps = 1/46 (2%)
Query: 121 YPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFM 166
+ P++E +L+L+ G+ + V K + W +L TG+ G P++++
Sbjct: 8 FVPSNERDLQLKKGEKLQVLKSDGEWWLAKSLT-TGKEGYIPSNYV 52
>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 = 37.1 bits (86), Expect = 3e-04
Identities = 17/50 (34%), Positives = 24/50 (48%), Gaps = 3/50 (6%)
Query: 61 AIYPYKPQKDDELELRRGSVYTV-TERCQDGWFKGTSQRTQRSGVFPGNY 109
A+Y Y+ Q DDE+ +R G V GW G + G+FP +Y
Sbjct: 4 ALYDYEAQGDDEISIRVGDRIAVIRGDDGSGWTYGEINGVK--GLFPTSY 51
Score = 34.8 bits (80), Expect = 0.002
Identities = 18/46 (39%), Positives = 24/46 (52%), Gaps = 3/46 (6%)
Query: 121 YPPNSEYELELRVGDLIYVHKKRD-DGWYKGTLQRTGRTGLFPASF 165
Y + E+ +RVGD I V + D GW G + G GLFP S+
Sbjct: 8 YEAQGDDEISIRVGDRIAVIRGDDGSGWTYGEIN--GVKGLFPTSY 51
>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 = 36.7 bits (85), Expect = 4e-04
Identities = 12/51 (23%), Positives = 26/51 (50%)
Query: 60 IAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYV 110
+A+Y ++P+ D+EL G + + + GW + ++G+ P +V
Sbjct: 3 VALYDFEPEHDNELGFAEGQILFILYKHGQGWLIAEDESGGKTGLVPEEFV 53
Score = 36.0 bits (83), Expect = 6e-04
Identities = 13/47 (27%), Positives = 22/47 (46%)
Query: 121 YPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFMK 167
+ P + EL G ++++ K GW + G+TGL P F+
Sbjct: 8 FEPEHDNELGFAEGQILFILYKHGQGWLIAEDESGGKTGLVPEEFVS 54
>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 = 36.6 bits (85), Expect = 4e-04
Identities = 17/51 (33%), Positives = 27/51 (52%), Gaps = 6/51 (11%)
Query: 61 AIYPYKPQKDDELELRRGSVYTVTERCQ----DGWFKGTSQRTQRSGVFPG 107
A+Y Y+ Q D+EL G++ + + DGW++G + R GVFP
Sbjct: 4 ALYDYEAQSDEELSFPEGAIIRILRKDDNGVDDGWWEG--EFNGRVGVFPS 52
Score = 35.8 bits (83), Expect = 7e-04
Identities = 18/52 (34%), Positives = 27/52 (51%), Gaps = 6/52 (11%)
Query: 116 RCIVPYPPNSEYELELRVGDLIYVHKKR----DDGWYKGTLQRTGRTGLFPA 163
R + Y S+ EL G +I + +K DDGW++G GR G+FP+
Sbjct: 3 RALYDYEAQSDEELSFPEGAIIRILRKDDNGVDDGWWEGEFN--GRVGVFPS 52
>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 = 36.1 bits (83), Expect = 5e-04
Identities = 17/42 (40%), Positives = 29/42 (69%), Gaps = 3/42 (7%)
Query: 128 ELELRVGDLIYV-HKKRDDGWYKGTLQRTGRTGLFPASFMKQ 168
EL L+ GD+I + +KK GW++G + GR G FPA+++++
Sbjct: 15 ELSLKEGDIIKILNKKGQQGWWRGEIY--GRVGWFPANYVEE 54
Score = 31.8 bits (72), Expect = 0.020
Identities = 17/51 (33%), Positives = 27/51 (52%), Gaps = 3/51 (5%)
Query: 61 AIYPYKPQKDDELELRRGSVYTV-TERCQDGWFKGTSQRTQRSGVFPGNYV 110
A Y + + EL L+ G + + ++ Q GW++G + R G FP NYV
Sbjct: 4 ARYDFCARDRSELSLKEGDIIKILNKKGQQGWWRG--EIYGRVGWFPANYV 52
>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 = 36.1 bits (83), Expect = 6e-04
Identities = 16/52 (30%), Positives = 27/52 (51%), Gaps = 2/52 (3%)
Query: 116 RCIVPYPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFMK 167
+ + Y +L+ GD+I + +K D+ WY G L G G PAS+++
Sbjct: 4 KALYSYEGKEPGDLKFNKGDIIILRRKVDENWYHGELN--GCHGFLPASYIQ 53
Score = 29.5 bits (66), Expect = 0.16
Identities = 10/50 (20%), Positives = 24/50 (48%), Gaps = 2/50 (4%)
Query: 61 AIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYV 110
A+Y Y+ ++ +L+ +G + + + + W+ G G P +Y+
Sbjct: 5 ALYSYEGKEPGDLKFNKGDIIILRRKVDENWYHGELNGCH--GFLPASYI 52
>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 = 36.1 bits (83), Expect = 6e-04
Identities = 18/52 (34%), Positives = 30/52 (57%), Gaps = 2/52 (3%)
Query: 59 YIAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYV 110
+IA+ Y PQ + E++L RG V + G+++GT + R+G FP + V
Sbjct: 3 FIAVKAYSPQGEGEIQLNRGERVKVLSIGEGGFWEGTVK--GRTGWFPADCV 52
Score = 35.7 bits (82), Expect = 8e-04
Identities = 18/50 (36%), Positives = 29/50 (58%), Gaps = 2/50 (4%)
Query: 114 KFRCIVPYPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPA 163
F + Y P E E++L G+ + V + G+++GT++ GRTG FPA
Sbjct: 2 TFIAVKAYSPQGEGEIQLNRGERVKVLSIGEGGFWEGTVK--GRTGWFPA 49
>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 = 36.1 bits (83), Expect = 6e-04
Identities = 16/51 (31%), Positives = 25/51 (49%), Gaps = 1/51 (1%)
Query: 60 IAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYV 110
A+Y + P++ L L+R Y + E+ W+K R G+ P NYV
Sbjct: 4 KALYDFLPREPSNLALKRAEEYLILEQYDPHWWKA-RDRYGNEGLIPSNYV 53
>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 = 36.2 bits (84), Expect = 7e-04
Identities = 21/44 (47%), Positives = 28/44 (63%), Gaps = 2/44 (4%)
Query: 124 NSEYELELRVGDLIYVHKKRD-DGWYKGTLQRTGRTGLFPASFM 166
N E EL L GD +YV+ D DG+Y+G L GR GL P++F+
Sbjct: 18 NPEAELPLNAGDYVYVYGDMDEDGFYEGELL-DGRRGLVPSNFV 60
>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 = 35.9 bits (83), Expect = 7e-04
Identities = 17/56 (30%), Positives = 29/56 (51%), Gaps = 5/56 (8%)
Query: 59 YIAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKG-----TSQRTQRSGVFPGNY 109
Y A+Y Y+PQ +DEL ++ + + E+ D W+K +S + G+ P Y
Sbjct: 2 YKALYDYEPQTEDELTIQEDDILYLLEKSDDDWWKVKLKVNSSDDDEPVGLVPATY 57
Score = 33.9 bits (78), Expect = 0.004
Identities = 17/50 (34%), Positives = 28/50 (56%), Gaps = 5/50 (10%)
Query: 121 YPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQR-----TGRTGLFPASF 165
Y P +E EL ++ D++Y+ +K DD W+K L+ GL PA++
Sbjct: 8 YEPQTEDELTIQEDDILYLLEKSDDDWWKVKLKVNSSDDDEPVGLVPATY 57
>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 = 35.7 bits (82), Expect = 7e-04
Identities = 13/37 (35%), Positives = 23/37 (62%), Gaps = 2/37 (5%)
Query: 128 ELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPAS 164
+L+ GD+I + ++ D+ WY G + +G+FPAS
Sbjct: 16 DLKFNKGDVILLRRQLDENWYLGEINGV--SGIFPAS 50
Score = 32.2 bits (73), Expect = 0.015
Identities = 13/54 (24%), Positives = 24/54 (44%), Gaps = 2/54 (3%)
Query: 57 PEYIAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYV 110
P A+ Y+ +L+ +G V + + + W+ G SG+FP + V
Sbjct: 1 PRAKALCNYRGHNPGDLKFNKGDVILLRRQLDENWYLGEINGV--SGIFPASSV 52
>gnl|CDD|212788 cd11854, SH3_Fus1p, Src homology 3 domain of yeast cell fusion
protein Fus1p. Fus1p is required at the cell surface
for cell fusion during the mating response in yeast. It
requires Bch1p and Bud7p, which are Chs5p-Arf1p binding
proteins, for localization to the plasma membrane. It
acts as a scaffold protein to assemble a cell surface
complex which is involved in septum degradation and
inhibition of the NOG pathway to promote cell fusion.
The SH3 domain of Fus1p interacts with Bin1p, a formin
that controls the assembly of actin cables in response
to Cdc42 signaling. It has been shown to bind the motif,
R(S/T)(S/T)SL, instead of PxxP motifs. 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 = 56
Score = 35.8 bits (83), Expect = 7e-04
Identities = 15/53 (28%), Positives = 21/53 (39%), Gaps = 4/53 (7%)
Query: 58 EYIAIYPYKPQKDDELELRRGSVYTVTERCQDGW---FKGTSQRTQRSGVFPG 107
I ++P DDEL ++ G V DGW + R G+ PG
Sbjct: 1 LMTVISTFEPSLDDELLIKVGETVRVLAEYDDGWCLVERADGLNGDR-GMVPG 52
Score = 28.8 bits (65), Expect = 0.27
Identities = 11/32 (34%), Positives = 19/32 (59%)
Query: 116 RCIVPYPPNSEYELELRVGDLIYVHKKRDDGW 147
I + P+ + EL ++VG+ + V + DDGW
Sbjct: 3 TVISTFEPSLDDELLIKVGETVRVLAEYDDGW 34
>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 = 35.5 bits (82), Expect = 8e-04
Identities = 18/55 (32%), Positives = 31/55 (56%), Gaps = 2/55 (3%)
Query: 58 EYIAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYVAP 112
+Y+ + YK Q+ +E+ LR G V V E+ ++GW+ + + Q G P Y+ P
Sbjct: 1 QYVVVADYKKQQPNEISLRAGDVVDVIEKNENGWWFVSLEDEQ--GWVPATYLEP 53
Score = 29.3 bits (66), Expect = 0.16
Identities = 13/39 (33%), Positives = 25/39 (64%), Gaps = 2/39 (5%)
Query: 128 ELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFM 166
E+ LR GD++ V +K ++GW+ +L+ G PA+++
Sbjct: 15 EISLRAGDVVDVIEKNENGWWFVSLE--DEQGWVPATYL 51
>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 = 35.7 bits (83), Expect = 9e-04
Identities = 19/50 (38%), Positives = 28/50 (56%), Gaps = 3/50 (6%)
Query: 120 PYPPNSEYELELRVGDLIYVHKKRD-DGWYKGTLQRTGRTGLFPASFMKQ 168
P P +E EL + G LI V+ +D DG+Y G + GR GL P + + +
Sbjct: 15 PNPDAAEEELPFKEGQLIKVYGDKDADGFYLG--EINGRRGLVPCNMVSE 62
>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 = 35.5 bits (82), Expect = 0.001
Identities = 15/49 (30%), Positives = 26/49 (53%), Gaps = 2/49 (4%)
Query: 61 AIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNY 109
A+Y + + +DEL + G + T E + W G + +SG+FP N+
Sbjct: 4 ALYDFTGENEDELSFKAGDIITELESIDEEWMSG--ELRGKSGIFPKNF 50
Score = 34.0 bits (78), Expect = 0.003
Identities = 17/52 (32%), Positives = 29/52 (55%), Gaps = 2/52 (3%)
Query: 114 KFRCIVPYPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASF 165
K R + + +E EL + GD+I + D+ W G L+ G++G+FP +F
Sbjct: 1 KARALYDFTGENEDELSFKAGDIITELESIDEEWMSGELR--GKSGIFPKNF 50
>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 = 35.7 bits (82), Expect = 0.001
Identities = 21/53 (39%), Positives = 27/53 (50%), Gaps = 2/53 (3%)
Query: 61 AIYPYKPQKDDELELRRGSVYTVTE-RCQDGWFKGTSQRTQRSGVFPGNYVAP 112
A+Y Y Q+ DEL + G T E + GW KG Q G++P NYV P
Sbjct: 5 ALYDYDGQEQDELSFKAGDELTKLEDEDEQGWCKGRLDSGQV-GLYPANYVEP 56
>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 = 35.4 bits (82), Expect = 0.001
Identities = 18/51 (35%), Positives = 25/51 (49%), Gaps = 5/51 (9%)
Query: 61 AIYPYKPQKDDELELRRGSVYTVTERCQ---DGWFKGTSQRTQRSGVFPGN 108
A+Y + DEL RRG + TV E+ +GW+ R G+ PGN
Sbjct: 4 ALYDNVAESPDELAFRRGDILTVLEQNTAGLEGWWL--CSLRGRQGIAPGN 52
>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 = 35.6 bits (82), Expect = 0.001
Identities = 17/51 (33%), Positives = 27/51 (52%), Gaps = 3/51 (5%)
Query: 61 AIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGT-SQRTQRSGVFPGNYV 110
A+Y Y+ ++ DEL +G++ + GW+KG + Q FP NYV
Sbjct: 4 ALYDYRAKRSDELSFCKGALIHNVSKETGGWWKGDYGGKVQH--YFPSNYV 52
>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 = 35.3 bits (81), Expect = 0.001
Identities = 18/51 (35%), Positives = 25/51 (49%), Gaps = 2/51 (3%)
Query: 61 AIYPYKPQKDDELELRRGSVYTVTERCQD-GWFKGTSQRTQRSGVFPGNYV 110
A+Y Y Q+ DEL + G E + GW KG + G++P NYV
Sbjct: 6 AVYDYTGQEPDELSFKAGEELLKVEDEDEQGWCKGVTDGGA-VGLYPANYV 55
Score = 29.1 bits (65), Expect = 0.23
Identities = 16/54 (29%), Positives = 28/54 (51%), Gaps = 2/54 (3%)
Query: 114 KFRCIVPYPPNSEYELELRVGD-LIYVHKKRDDGWYKGTLQRTGRTGLFPASFM 166
+ R + Y EL + G+ L+ V + + GW KG + G GL+PA+++
Sbjct: 3 RVRAVYDYTGQEPDELSFKAGEELLKVEDEDEQGWCKG-VTDGGAVGLYPANYV 55
>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 = 34.8 bits (80), Expect = 0.001
Identities = 16/53 (30%), Positives = 26/53 (49%), Gaps = 2/53 (3%)
Query: 60 IAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYVAP 112
+A++ Y+ Q ++L R G V + W +G S R G+FP +V P
Sbjct: 3 VALHRYEAQGPEDLGFREGDTIDVLSEVNEAWLEGHSD--GRVGIFPKCFVVP 53
Score = 33.3 bits (76), Expect = 0.006
Identities = 14/40 (35%), Positives = 21/40 (52%), Gaps = 2/40 (5%)
Query: 128 ELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFMK 167
+L R GD I V + ++ W +G GR G+FP F+
Sbjct: 15 DLGFREGDTIDVLSEVNEAWLEG--HSDGRVGIFPKCFVV 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 = 34.8 bits (80), Expect = 0.002
Identities = 16/50 (32%), Positives = 21/50 (42%), Gaps = 2/50 (4%)
Query: 61 AIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYV 110
A+Y Y +D+EL E D W+ G G+FP NYV
Sbjct: 4 ALYDYDAAEDNELSFFENDKIINIEFVDDDWWLGECH--GSRGLFPSNYV 51
Score = 30.2 bits (68), Expect = 0.093
Identities = 14/52 (26%), Positives = 24/52 (46%), Gaps = 2/52 (3%)
Query: 116 RCIVPYPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFMK 167
+ + Y + EL D I + DD W+ G G GLFP+++++
Sbjct: 3 KALYDYDAAEDNELSFFENDKIINIEFVDDDWWLGECH--GSRGLFPSNYVE 52
>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 = 34.8 bits (80), Expect = 0.002
Identities = 16/54 (29%), Positives = 27/54 (50%), Gaps = 3/54 (5%)
Query: 58 EYIAIYPYKPQKDDELELRRGSVYTVTERCQD-GWFKGTSQRTQRSGVFPGNYV 110
E +A+Y ++ + DEL ++G + + D W+K Q R G P NY+
Sbjct: 1 EAVALYSFQATESDELPFQKGDILKILNMEDDQNWYKAELQ--GREGYIPKNYI 52
>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 = 34.6 bits (79), Expect = 0.002
Identities = 14/51 (27%), Positives = 29/51 (56%), Gaps = 2/51 (3%)
Query: 61 AIYPYKPQKDDELELRRGS-VYTVTERCQDGWFKGTSQRTQRSGVFPGNYV 110
A+Y ++ + +E+ ++ + +E DGW +G + R + G+FP +YV
Sbjct: 4 ALYSFQSENKEEINIQENEELVIFSENSLDGWLQGQNSRGET-GLFPASYV 53
Score = 33.0 bits (75), Expect = 0.008
Identities = 14/33 (42%), Positives = 21/33 (63%), Gaps = 1/33 (3%)
Query: 135 DLIYVHKKRDDGWYKGTLQRTGRTGLFPASFMK 167
+L+ + DGW +G R G TGLFPAS+++
Sbjct: 23 ELVIFSENSLDGWLQGQNSR-GETGLFPASYVE 54
>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 = 34.6 bits (80), Expect = 0.002
Identities = 13/33 (39%), Positives = 19/33 (57%)
Query: 59 YIAIYPYKPQKDDELELRRGSVYTVTERCQDGW 91
Y A Y+ QK+DEL + G V V ++ +GW
Sbjct: 2 YYATRAYEAQKEDELSVPAGVVVEVLQKSDNGW 34
Score = 29.2 bits (66), Expect = 0.16
Identities = 16/49 (32%), Positives = 26/49 (53%), Gaps = 4/49 (8%)
Query: 120 PYPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQR-TGRTGLFPASFMK 167
Y E EL + G ++ V +K D+GW+ L R GR G P+ +++
Sbjct: 7 AYEAQKEDELSVPAGVVVEVLQKSDNGWW---LIRYNGRAGYVPSMYLQ 52
>gnl|CDD|233043 TIGR00599, rad18, DNA repair protein rad18. All proteins in this
family for which functions are known are involved in
nucleotide excision repair.This family is based on the
phylogenomic analysis of JA Eisen (1999, Ph.D. Thesis,
Stanford University) [DNA metabolism, DNA replication,
recombination, and repair].
Length = 397
Score = 37.3 bits (86), Expect = 0.002
Identities = 16/47 (34%), Positives = 23/47 (48%), Gaps = 3/47 (6%)
Query: 6 LNDLLECSVCLDRLDTSSKVLPCQHTFCKKCLEEIVSSHKELRCPEC 52
L+ L C +C D D + C HTFC C+ +S+ +CP C
Sbjct: 23 LDTSLRCHICKDFFD-VPVLTSCSHTFCSLCIRRCLSNQP--KCPLC 66
>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 = 34.3 bits (79), Expect = 0.002
Identities = 17/52 (32%), Positives = 25/52 (48%), Gaps = 2/52 (3%)
Query: 60 IAIYPYKPQKDDELELRRGSVYTVTERCQ-DGWFKGTSQRTQRSGVFPGNYV 110
+Y Y+ Q+ DEL + G V E DGW K ++ + G P NY+
Sbjct: 5 KVLYSYEAQRPDELTITEGEELEVIEDGDGDGWVKARNKSGE-VGYVPENYL 55
>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 = 34.3 bits (79), Expect = 0.003
Identities = 14/55 (25%), Positives = 26/55 (47%), Gaps = 2/55 (3%)
Query: 58 EYIAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYVAP 112
E A + Y + + EL ++G T+ + D W++G Q + G+ P Y+
Sbjct: 1 EATAQFDYTGRSERELSFKKGDSLTLYRQVSDDWWRG--QLNGQDGLVPHKYITL 53
Score = 34.3 bits (79), Expect = 0.003
Identities = 18/56 (32%), Positives = 30/56 (53%), Gaps = 6/56 (10%)
Query: 111 APAKFRCIVPYPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFM 166
A A+F Y SE EL + GD + ++++ D W++G L G+ GL P ++
Sbjct: 2 ATAQF----DYTGRSERELSFKKGDSLTLYRQVSDDWWRGQLN--GQDGLVPHKYI 51
>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 = 34.2 bits (78), Expect = 0.003
Identities = 18/50 (36%), Positives = 28/50 (56%), Gaps = 5/50 (10%)
Query: 121 YPPNSEY--ELELRVGDLIY-VHKKRDDGWYKGTLQRTGRTGLFPASFMK 167
YP +E+ EL VG + V R+ GW +GTL G+ GL P ++++
Sbjct: 6 YPCEAEHSSELSFEVGAIFEDVTLSREPGWLEGTLN--GKRGLIPENYVE 53
Score = 33.4 bits (76), Expect = 0.006
Identities = 17/51 (33%), Positives = 27/51 (52%), Gaps = 3/51 (5%)
Query: 61 AIYPYKPQKDDELELRRGSVY-TVTERCQDGWFKGTSQRTQRSGVFPGNYV 110
A+YP + + EL G+++ VT + GW +GT + G+ P NYV
Sbjct: 4 AVYPCEAEHSSELSFEVGAIFEDVTLSREPGWLEGTLN--GKRGLIPENYV 52
>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 = 33.9 bits (77), Expect = 0.003
Identities = 14/53 (26%), Positives = 29/53 (54%), Gaps = 2/53 (3%)
Query: 58 EYIAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYV 110
+Y+ + Y+ Q++ E+ L+ G V V E+ + GW+ ++ + G P Y+
Sbjct: 1 QYVVVSNYEKQENSEISLQAGEVVDVIEKNESGWWFVST--AEEQGWVPATYL 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 = 34.0 bits (78), Expect = 0.004
Identities = 13/53 (24%), Positives = 29/53 (54%), Gaps = 2/53 (3%)
Query: 60 IAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYVAP 112
+A++ Y+ + ++LE ++G V V + + W +G + + G+FP +V
Sbjct: 3 VALFSYEASQPEDLEFQKGDVILVLSKVNEDWLEGQCK--GKIGIFPSAFVED 53
Score = 33.6 bits (77), Expect = 0.004
Identities = 15/40 (37%), Positives = 27/40 (67%), Gaps = 2/40 (5%)
Query: 128 ELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFMK 167
+LE + GD+I V K ++ W +G Q G+ G+FP++F++
Sbjct: 15 DLEFQKGDVILVLSKVNEDWLEG--QCKGKIGIFPSAFVE 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 = 34.1 bits (78), Expect = 0.004
Identities = 19/54 (35%), Positives = 28/54 (51%), Gaps = 4/54 (7%)
Query: 59 YIAIYPYKPQKDDELELRRGSVYTVTERC--QDGWFKGTSQRTQRSGVFPGNYV 110
Y A+YP++ + DE+ G + V E+ + GW G+ Q G FP NYV
Sbjct: 4 YRALYPFEARNHDEMSFNAGDIIQVDEKTVGEPGWLYGSFQGNF--GWFPCNYV 55
>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 = 33.5 bits (77), Expect = 0.004
Identities = 16/51 (31%), Positives = 29/51 (56%), Gaps = 2/51 (3%)
Query: 60 IAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYV 110
+A + ++ +++DEL G V T+ E + W KG + + G+FP N+V
Sbjct: 3 VARFDFEGEQEDELSFSEGDVITLKEYVGEEWAKG--ELNGKIGIFPLNFV 51
Score = 32.0 bits (73), Expect = 0.016
Identities = 17/52 (32%), Positives = 26/52 (50%), Gaps = 4/52 (7%)
Query: 116 RCIV--PYPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASF 165
RC+ + E EL GD+I + + + W KG L G+ G+FP +F
Sbjct: 1 RCVARFDFEGEQEDELSFSEGDVITLKEYVGEEWAKGELN--GKIGIFPLNF 50
>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 = 33.7 bits (77), Expect = 0.004
Identities = 14/52 (26%), Positives = 31/52 (59%), Gaps = 2/52 (3%)
Query: 59 YIAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYV 110
++A+Y +K + D+L+ G TV + + W++G + +++G FP N++
Sbjct: 2 FVALYRFKALEKDDLDFHPGERITVIDDSNEEWWRG--KIGEKTGYFPMNFI 51
>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 = 33.5 bits (77), Expect = 0.005
Identities = 16/54 (29%), Positives = 29/54 (53%), Gaps = 3/54 (5%)
Query: 58 EYIAIYPYKPQKDDELELRRGSVYTVTERCQD-GWFKGTSQRTQRSGVFPGNYV 110
E +A + +K +DEL ++GS+ V D W+K ++ + G+ P NY+
Sbjct: 1 EAVAKHDFKATAEDELSFKKGSILKVLNMEDDPNWYK--AELDGKEGLIPKNYI 52
>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 = 33.4 bits (77), Expect = 0.005
Identities = 14/45 (31%), Positives = 27/45 (60%), Gaps = 1/45 (2%)
Query: 124 NSEYELELRVGDLIY-VHKKRDDGWYKGTLQRTGRTGLFPASFMK 167
S+ EL ++ GD++Y + K+ W+ TG+ G+ PAS+++
Sbjct: 12 QSDDELTVKEGDVVYILDDKKSKDWWMVENVSTGKEGVVPASYIE 56
Score = 33.4 bits (77), Expect = 0.006
Identities = 15/54 (27%), Positives = 27/54 (50%), Gaps = 1/54 (1%)
Query: 60 IAIYPYKPQKDDELELRRGS-VYTVTERCQDGWFKGTSQRTQRSGVFPGNYVAP 112
+Y + Q DDEL ++ G VY + ++ W+ + T + GV P +Y+
Sbjct: 4 KVLYDFDAQSDDELTVKEGDVVYILDDKKSKDWWMVENVSTGKEGVVPASYIEI 57
>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 = 33.2 bits (76), Expect = 0.007
Identities = 16/54 (29%), Positives = 26/54 (48%), Gaps = 1/54 (1%)
Query: 115 FRCIVPYPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFMKQ 168
CI + L L+ GDL+ + D GW +G G +G FP+S +++
Sbjct: 2 VVCIEAFTSQEPGHLNLQRGDLVELTGTTDSGWLQGRS-CWGSSGFFPSSCVQE 54
Score = 32.0 bits (73), Expect = 0.017
Identities = 16/52 (30%), Positives = 24/52 (46%), Gaps = 1/52 (1%)
Query: 59 YIAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYV 110
+ I + Q+ L L+RG + +T GW +G S SG FP + V
Sbjct: 2 VVCIEAFTSQEPGHLNLQRGDLVELTGTTDSGWLQGRS-CWGSSGFFPSSCV 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 = 33.3 bits (76), Expect = 0.007
Identities = 17/52 (32%), Positives = 26/52 (50%), Gaps = 2/52 (3%)
Query: 59 YIAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYV 110
YI I Y ++DEL L G V + DGW+ ++ + +G FP Y+
Sbjct: 2 YITIKAYTAVEEDELTLLEGEAIEVIHKLLDGWW--VVRKGEVTGYFPSMYL 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 = 33.1 bits (76), Expect = 0.008
Identities = 15/40 (37%), Positives = 20/40 (50%), Gaps = 2/40 (5%)
Query: 128 ELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFMK 167
EL + GD+I V D W+ G G FPASF++
Sbjct: 15 ELGFKAGDVIEVLDMSDKDWWWG--SIRDEEGWFPASFVR 52
Score = 30.0 bits (68), Expect = 0.096
Identities = 12/51 (23%), Positives = 23/51 (45%), Gaps = 2/51 (3%)
Query: 60 IAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYV 110
A++ + +EL + G V V + W+ G+ + G FP ++V
Sbjct: 3 EALWDHVTMDPEELGFKAGDVIEVLDMSDKDWWWGSIR--DEEGWFPASFV 51
>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 = 32.8 bits (75), Expect = 0.008
Identities = 15/48 (31%), Positives = 28/48 (58%), Gaps = 2/48 (4%)
Query: 59 YIAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFP 106
+IA+ Y PQ++ E+ L +G V + G+++G+ + R+G FP
Sbjct: 2 FIAVKSYSPQEEGEISLHKGDRVKVLSIGEGGFWEGSVR--GRTGWFP 47
Score = 30.9 bits (70), Expect = 0.049
Identities = 17/50 (34%), Positives = 28/50 (56%), Gaps = 2/50 (4%)
Query: 114 KFRCIVPYPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPA 163
F + Y P E E+ L GD + V + G+++G+++ GRTG FP+
Sbjct: 1 YFIAVKSYSPQEEGEISLHKGDRVKVLSIGEGGFWEGSVR--GRTGWFPS 48
>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 = 33.1 bits (75), Expect = 0.009
Identities = 19/50 (38%), Positives = 25/50 (50%), Gaps = 1/50 (2%)
Query: 62 IYPYKPQKDDELELRRGSVYTVT-ERCQDGWFKGTSQRTQRSGVFPGNYV 110
IY + DDEL G V VT E Q+ W + +R GVFP ++V
Sbjct: 5 IYDCQADNDDELTFVEGEVIIVTGEEDQEWWIGHIEGQPERKGVFPVSFV 54
>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 = 33.0 bits (75), Expect = 0.009
Identities = 16/52 (30%), Positives = 31/52 (59%), Gaps = 2/52 (3%)
Query: 116 RCIVPYPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFMK 167
R + + P ++ EL++ G++++V KK D W T+ G+ GL P +F++
Sbjct: 3 RVLYEFVPETKEELQVLPGNIVFVLKKGTDNW--ATVVFNGKKGLVPCNFLE 52
Score = 28.7 bits (64), Expect = 0.28
Identities = 13/51 (25%), Positives = 27/51 (52%), Gaps = 2/51 (3%)
Query: 62 IYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYVAP 112
+Y + P+ +EL++ G++ V ++ D W T + G+ P N++ P
Sbjct: 5 LYEFVPETKEELQVLPGNIVFVLKKGTDNW--ATVVFNGKKGLVPCNFLEP 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 = 32.9 bits (75), Expect = 0.009
Identities = 18/54 (33%), Positives = 26/54 (48%), Gaps = 5/54 (9%)
Query: 116 RCIVPYPPNSEYE---LELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFM 166
C Y E L G+LI V + D GW++G ++ G G FPAS++
Sbjct: 1 LCRTLYAFTGEQHQQGLSFEAGELIRVLQAPDGGWWEG--EKDGLRGWFPASYV 52
>gnl|CDD|222454 pfam13920, zf-C3HC4_3, Zinc finger, C3HC4 type (RING finger).
Length = 49
Score = 32.4 bits (74), Expect = 0.010
Identities = 15/46 (32%), Positives = 23/46 (50%), Gaps = 5/46 (10%)
Query: 8 DLLECSVCLDRLDTSSKVLPCQHT-FCKKCLEEIVSSHKELRCPEC 52
+ C +CL+R + LPC H C++C + + S K CP C
Sbjct: 1 EDDLCVICLER-PRNVVFLPCGHLCLCEECAKRLRSKKK---CPIC 42
>gnl|CDD|227861 COG5574, PEX10, RING-finger-containing E3 ubiquitin ligase
[Posttranslational modification, protein turnover,
chaperones].
Length = 271
Score = 35.3 bits (81), Expect = 0.011
Identities = 16/46 (34%), Positives = 21/46 (45%), Gaps = 1/46 (2%)
Query: 11 ECSVCLDRLDTSSKVLPCQHTFCKKCLEEIVSSHKELRCPECPTFV 56
+C +CL+ + S PC H FC CL + K CP C V
Sbjct: 217 KCFLCLEEPEVPSC-TPCGHLFCLSCLLISWTKKKYEFCPLCRAKV 261
>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 = 32.5 bits (74), Expect = 0.011
Identities = 19/55 (34%), Positives = 26/55 (47%), Gaps = 5/55 (9%)
Query: 61 AIYPYKPQKDDELELRRGSVYTVTERC---QDGWFKGTSQRTQRSGVFPGNYVAP 112
A+Y K DEL RRG + TV E+ +GW+K R G+ P N +
Sbjct: 5 ALYDNKADCSDELAFRRGDILTVLEQNVPGSEGWWKCLLH--GRQGLAPANRLQL 57
>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 = 32.3 bits (73), Expect = 0.013
Identities = 17/53 (32%), Positives = 29/53 (54%), Gaps = 4/53 (7%)
Query: 59 YIAIYPYKPQKDDELELRRGSVYTVTER--CQDGWFKGTSQRTQRSGVFPGNY 109
Y A+YP++ + DE+ ++ G + V E + GW G + ++G FP NY
Sbjct: 2 YRALYPFEARSHDEITIQPGDIVMVDESQTGEPGWLGG--ELKGKTGWFPANY 52
>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 = 32.4 bits (74), Expect = 0.014
Identities = 16/51 (31%), Positives = 26/51 (50%), Gaps = 2/51 (3%)
Query: 60 IAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYV 110
+A Y Y Q D EL +++ T+ + + W+K + Q +G P NYV
Sbjct: 3 VAKYDYTAQGDQELSIKKNEKLTLLDDSKH-WWKVQNSSNQ-TGYVPSNYV 51
>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 = 32.3 bits (74), Expect = 0.014
Identities = 16/49 (32%), Positives = 27/49 (55%), Gaps = 2/49 (4%)
Query: 121 YPPNSEYELELRVGD-LIYVHKKRDDGWYKGTLQRTGRTGLFPASFMKQ 168
+ SE +L + GD L V +D WYK + GR G+ PA+++++
Sbjct: 10 FNGASEEDLPFKKGDILTIVAVTKDPNWYKAK-NKDGREGMIPANYVQK 57
Score = 31.9 bits (73), Expect = 0.021
Identities = 16/54 (29%), Positives = 28/54 (51%), Gaps = 2/54 (3%)
Query: 58 EYIAIYPYKPQKDDELELRRGSVYTVTERCQD-GWFKGTSQRTQRSGVFPGNYV 110
E IA Y + +++L ++G + T+ +D W+K + R G+ P NYV
Sbjct: 3 ECIAKYNFNGASEEDLPFKKGDILTIVAVTKDPNWYK-AKNKDGREGMIPANYV 55
>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 = 32.4 bits (73), Expect = 0.015
Identities = 18/51 (35%), Positives = 27/51 (52%), Gaps = 3/51 (5%)
Query: 61 AIYPYKPQKDDELELRRGSVYTVTERCQD-GWFKGTSQRTQRSGVFPGNYV 110
A+Y K + D EL G+V+ Q+ GW +GT ++G+ P NYV
Sbjct: 5 ALYACKAEHDSELSFTAGTVFDNVHPSQEPGWLEGT--LNGKTGLIPENYV 53
Score = 28.5 bits (63), Expect = 0.33
Identities = 12/29 (41%), Positives = 20/29 (68%), Gaps = 2/29 (6%)
Query: 139 VHKKRDDGWYKGTLQRTGRTGLFPASFMK 167
VH ++ GW +GTL G+TGL P ++++
Sbjct: 28 VHPSQEPGWLEGTLN--GKTGLIPENYVE 54
>gnl|CDD|212981 cd12048, SH3_DOCK3_B, Src Homology 3 domain of Class B Dedicator of
Cytokinesis 3. Dock3, also called modifier of cell
adhesion (MOCA), and presenilin binding protein (PBP),
is a class B DOCK and is an atypical guanine nucleotide
exchange factor (GEF) that lacks the conventional Dbl
homology (DH) domain. It regulates N-cadherin dependent
cell-cell adhesion, cell polarity, and neuronal
morphology. It promotes axonal growth by stimulating
actin polymerization and microtubule assembly. 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 B DOCKs also contain an SH3 domain at the
N-terminal region and a PxxP motif at the C-terminus;
Dock3 is a specific GEFs for Rac. The SH3 domain of
Dock3 binds to DHR-2 in an autoinhibitory manner;
binding of the scaffold protein Elmo to the SH3 domain
of Dock3 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 = 32.2 bits (73), Expect = 0.018
Identities = 14/39 (35%), Positives = 22/39 (56%), Gaps = 2/39 (5%)
Query: 73 LELRRGSVYTVTERCQDGWFKGTSQRTQR-SGVFPGNYV 110
L L G + E+C+ GW++G S + G+FP NY+
Sbjct: 16 LVLELGETVQILEKCE-GWYRGVSIKKPNVKGIFPANYI 53
Score = 27.2 bits (60), Expect = 0.97
Identities = 12/39 (30%), Positives = 27/39 (69%), Gaps = 2/39 (5%)
Query: 129 LELRVGDLIYVHKKRDDGWYKG-TLQRTGRTGLFPASFM 166
L L +G+ + + +K + GWY+G ++++ G+FPA+++
Sbjct: 16 LVLELGETVQILEKCE-GWYRGVSIKKPNVKGIFPANYI 53
>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 = 31.4 bits (71), Expect = 0.027
Identities = 17/49 (34%), Positives = 27/49 (55%), Gaps = 5/49 (10%)
Query: 61 AIYPYKPQKDDELELRRGSVYTVTER---CQDGWFKGTSQRTQRSGVFP 106
A+Y Y+ Q DDEL G++ + + DG+++G + R GVFP
Sbjct: 4 ALYDYEGQTDDELSFPEGAIIRILNKENQDDDGFWEG--EFNGRIGVFP 50
>gnl|CDD|212996 cd12063, SH3_Caskin2, Src Homology 3 domain of CASK interacting
protein 2. Caskin2 is a multidomain adaptor protein
that contains six ankyrin repeats, a single SH3 domain,
tandem sterile alpha motif (SAM) domains, and a long
disordered proline-rich region. It shares a domain
architecture with Caskin1, but does not bind CASK. The
function of Caskin2 is still unknown. 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 = 62
Score = 31.9 bits (72), Expect = 0.027
Identities = 18/43 (41%), Positives = 26/43 (60%), Gaps = 4/43 (9%)
Query: 129 LELRVGDLIYVHKKRDDGWYKGTL---QR-TGRTGLFPASFMK 167
L +R GD+I V ++ DG +KG + QR T R G FP S ++
Sbjct: 18 LNVRAGDVITVLEQHPDGRWKGHIHDSQRGTDRVGYFPPSIVE 60
Score = 29.2 bits (65), Expect = 0.20
Identities = 20/42 (47%), Positives = 24/42 (57%), Gaps = 4/42 (9%)
Query: 73 LELRRGSVYTVTERCQDGWFKG---TSQR-TQRSGVFPGNYV 110
L +R G V TV E+ DG +KG SQR T R G FP + V
Sbjct: 18 LNVRAGDVITVLEQHPDGRWKGHIHDSQRGTDRVGYFPPSIV 59
>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 = 31.5 bits (72), Expect = 0.028
Identities = 15/35 (42%), Positives = 19/35 (54%), Gaps = 5/35 (14%)
Query: 134 GDLIYVHKKR---DDGWYKGTLQRTGRTGLFPASF 165
GD+I + K D GW GTL GR+G FP +
Sbjct: 21 GDVIKLLPKEGPLDPGWLFGTLD--GRSGAFPKEY 53
Score = 31.1 bits (71), Expect = 0.037
Identities = 17/56 (30%), Positives = 23/56 (41%), Gaps = 5/56 (8%)
Query: 60 IAIYPYKPQKDDELELRRGSVYTVTERCQD---GWFKGTSQRTQRSGVFPGNYVAP 112
+A+ Y + L +G V + + GW GT RSG FP YV P
Sbjct: 3 VAVRAYITRDQTLLSFHKGDVIKLLPKEGPLDPGWLFGTLD--GRSGAFPKEYVQP 56
>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 = 31.5 bits (71), Expect = 0.030
Identities = 13/40 (32%), Positives = 24/40 (60%), Gaps = 2/40 (5%)
Query: 128 ELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFMK 167
+L+ GD+I + ++ D+ WY G + G G FP +F++
Sbjct: 16 DLKFSKGDIIILRRQVDENWYHGEV--NGIHGFFPTNFVQ 53
Score = 27.6 bits (61), Expect = 0.80
Identities = 12/50 (24%), Positives = 25/50 (50%), Gaps = 2/50 (4%)
Query: 61 AIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYV 110
A+Y Y+ ++ +L+ +G + + + + W+ G G FP N+V
Sbjct: 5 ALYNYEGKEPGDLKFSKGDIIILRRQVDENWYHGEVNGIH--GFFPTNFV 52
>gnl|CDD|212995 cd12062, SH3_Caskin1, Src Homology 3 domain of CASK interacting
protein 1. Caskin1 is a multidomain adaptor protein
that contains six ankyrin repeats, a single SH3 domain,
tandem sterile alpha motif (SAM) domains, and a long
disordered proline-rich region. It is expressed at high
levels in the brain and is localized in presynaptic
regions. It binds to the multidomain scaffolding protein
CASK through the CaMK 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.
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 = 62
Score = 31.5 bits (71), Expect = 0.030
Identities = 17/43 (39%), Positives = 27/43 (62%), Gaps = 4/43 (9%)
Query: 129 LELRVGDLIYVHKKRDDGWYKGTLQ--RTG--RTGLFPASFMK 167
L ++ GD+I V ++ DG +KG + RTG R G FP+S ++
Sbjct: 18 LNIKAGDVITVLEQHPDGRWKGCIHDNRTGNDRVGYFPSSLVE 60
Score = 26.5 bits (58), Expect = 2.1
Identities = 17/42 (40%), Positives = 22/42 (52%), Gaps = 4/42 (9%)
Query: 73 LELRRGSVYTVTERCQDGWFKGT--SQRT--QRSGVFPGNYV 110
L ++ G V TV E+ DG +KG RT R G FP + V
Sbjct: 18 LNIKAGDVITVLEQHPDGRWKGCIHDNRTGNDRVGYFPSSLV 59
>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 = 31.3 bits (71), Expect = 0.031
Identities = 14/41 (34%), Positives = 19/41 (46%), Gaps = 1/41 (2%)
Query: 73 LELRRGSVYTV-TERCQDGWFKGTSQRTQRSGVFPGNYVAP 112
L RG + TV ++GW G + + R G FP YV
Sbjct: 18 LRFNRGDIITVLVPEARNGWLYGKLEGSSRQGWFPEAYVKA 58
Score = 30.9 bits (70), Expect = 0.044
Identities = 19/54 (35%), Positives = 28/54 (51%), Gaps = 2/54 (3%)
Query: 116 RCIVPYPPNSEYEL-ELRVGDLIYV-HKKRDDGWYKGTLQRTGRTGLFPASFMK 167
R IV +P S L GD+I V + +GW G L+ + R G FP +++K
Sbjct: 4 RAIVSHPAGSNPTLLRFNRGDIITVLVPEARNGWLYGKLEGSSRQGWFPEAYVK 57
>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 = 31.5 bits (71), Expect = 0.031
Identities = 19/51 (37%), Positives = 26/51 (50%), Gaps = 5/51 (9%)
Query: 61 AIYPYKPQKDDELELRRGSVYTVTERCQ---DGWFKGTSQRTQRSGVFPGN 108
A+Y + DEL R+G + TV ER DGW+ + R G+ PGN
Sbjct: 7 ALYDNVAESPDELSFRKGDIMTVLERDTQGLDGWWLCSLH--GRQGIVPGN 55
>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 = 31.1 bits (70), Expect = 0.036
Identities = 15/41 (36%), Positives = 27/41 (65%), Gaps = 2/41 (4%)
Query: 128 ELELRVGDLIYVHKKRD-DGWYKGTLQRTGRTGLFPASFMK 167
E+ LR +++ + ++D +GW +G R G GLFPAS+++
Sbjct: 15 EISLREHEVLSLCSEQDIEGWLEGVNSR-GDRGLFPASYVE 54
>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 = 31.1 bits (71), Expect = 0.036
Identities = 13/52 (25%), Positives = 23/52 (44%), Gaps = 1/52 (1%)
Query: 60 IAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTS-QRTQRSGVFPGNYV 110
I +Y +K ++ DEL+ + G + WF R G+ P ++V
Sbjct: 3 IVLYDFKAERPDELDAKAGDAIIICAHSNYEWFVAKPIGRLGGPGLIPVSFV 54
Score = 29.2 bits (66), Expect = 0.21
Identities = 13/39 (33%), Positives = 19/39 (48%), Gaps = 1/39 (2%)
Query: 128 ELELRVGDLIYVHKKRDDGWYKGT-LQRTGRTGLFPASF 165
EL+ + GD I + + W+ + R G GL P SF
Sbjct: 15 ELDAKAGDAIIICAHSNYEWFVAKPIGRLGGPGLIPVSF 53
>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 = 31.1 bits (70), Expect = 0.038
Identities = 17/53 (32%), Positives = 28/53 (52%), Gaps = 5/53 (9%)
Query: 61 AIYPYKPQKDDELELRRGSVYTVTERCQ---DGWFKGTSQRTQRSGVFPGNYV 110
A+Y P+ +EL R+G + TV E+ +GW+ + R G+ PGN +
Sbjct: 4 ALYDNVPECAEELAFRKGDILTVIEQNTGGLEGWWLCSLH--GRQGIAPGNRL 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 = 31.2 bits (70), Expect = 0.039
Identities = 15/55 (27%), Positives = 29/55 (52%), Gaps = 2/55 (3%)
Query: 114 KFRCIVPYPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFMKQ 168
K+ + PY + E+ G + V +K +GW+ ++ G+ G PAS++K+
Sbjct: 2 KYVTVQPYTSQGKDEIGFEKGVTVEVIQKNLEGWW--YIRYLGKEGWAPASYLKK 54
Score = 28.8 bits (64), Expect = 0.22
Identities = 10/35 (28%), Positives = 19/35 (54%)
Query: 58 EYIAIYPYKPQKDDELELRRGSVYTVTERCQDGWF 92
+Y+ + PY Q DE+ +G V ++ +GW+
Sbjct: 2 KYVTVQPYTSQGKDEIGFEKGVTVEVIQKNLEGWW 36
>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 = 31.0 bits (71), Expect = 0.040
Identities = 14/54 (25%), Positives = 27/54 (50%), Gaps = 4/54 (7%)
Query: 116 RCIVPYPPNSEYELELRVGDLIYVHKKRDD--GWYKGTLQRTGRTGLFPASFMK 167
+ + Y + + E+ + G+ + V + DD GW K +G GL P S+++
Sbjct: 3 KVLYDYTASGDDEVSISEGEEVTV-LEPDDGSGWTKVRNG-SGEEGLVPTSYIE 54
Score = 29.5 bits (67), Expect = 0.14
Identities = 16/53 (30%), Positives = 24/53 (45%), Gaps = 6/53 (11%)
Query: 61 AIYPYKPQKDDELELRRGSVYTVTERCQD---GWFKGTSQRTQRSGVFPGNYV 110
+Y Y DDE+ + G TV E D GW K + + G+ P +Y+
Sbjct: 4 VLYDYTASGDDEVSISEGEEVTVLE--PDDGSGWTKVRNG-SGEEGLVPTSYI 53
>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 = 31.2 bits (70), Expect = 0.042
Identities = 18/52 (34%), Positives = 27/52 (51%), Gaps = 3/52 (5%)
Query: 61 AIYPYKPQKDDELELRRGSVYTVTERCQDG--WFKGTSQRTQRSGVFPGNYV 110
A+YP+ D+EL +G V V E+ ++ W+K Q G+ P NYV
Sbjct: 5 ALYPFSSSNDEELNFEKGEVMDVIEKPENDPEWWKCRKANGQ-VGLVPKNYV 55
>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 = 30.6 bits (69), Expect = 0.050
Identities = 16/52 (30%), Positives = 23/52 (44%), Gaps = 1/52 (1%)
Query: 60 IAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYVA 111
+A+ Y EL LR G T+ + W+K S+ T R P +VA
Sbjct: 3 VALGDYPSGGPAELSLRLGEPLTIVSD-EGDWWKVLSEVTGRESYIPSVHVA 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 = 30.9 bits (70), Expect = 0.052
Identities = 18/46 (39%), Positives = 24/46 (52%), Gaps = 4/46 (8%)
Query: 123 PNSEYELELRVGDLIYVHKKRDD--GWYKGTLQRTGRTGLFPASFM 166
N EL + GDLIY+ K D GW+ G L G+ GL P ++
Sbjct: 10 GNEPDELSFKRGDLIYIISKEYDSFGWWVGELN--GKVGLVPKDYL 53
Score = 24.3 bits (53), Expect = 9.6
Identities = 13/54 (24%), Positives = 25/54 (46%), Gaps = 4/54 (7%)
Query: 59 YIAIYPYKPQKDDELELRRGSVYTVTERCQD--GWFKGTSQRTQRSGVFPGNYV 110
Y+ ++ + DEL +RG + + + D GW+ G G+ P +Y+
Sbjct: 2 YMGLWDCSGNEPDELSFKRGDLIYIISKEYDSFGWWVGELNGK--VGLVPKDYL 53
>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 = 30.6 bits (69), Expect = 0.052
Identities = 13/54 (24%), Positives = 25/54 (46%), Gaps = 2/54 (3%)
Query: 58 EYIAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYVA 111
E +A + Y + EL +RG V + + W++G + G+ P Y++
Sbjct: 3 EAVACFDYTGRTAQELSFKRGDVLLLHSKASSDWWRGEHNGMR--GLIPHKYIS 54
Score = 29.8 bits (67), Expect = 0.13
Identities = 13/46 (28%), Positives = 23/46 (50%), Gaps = 2/46 (4%)
Query: 121 YPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFM 166
Y + EL + GD++ +H K W++G + G GL P ++
Sbjct: 10 YTGRTAQELSFKRGDVLLLHSKASSDWWRG--EHNGMRGLIPHKYI 53
>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 = 31.0 bits (70), Expect = 0.054
Identities = 17/40 (42%), Positives = 24/40 (60%), Gaps = 4/40 (10%)
Query: 129 LELRVGDLIYVHKKRDDGWYKGTLQ--RTG--RTGLFPAS 164
L +R GD+I V ++ DG +KG + +TG R G FP S
Sbjct: 18 LNVRAGDIITVLEQHPDGRWKGHIHDNQTGNDRVGYFPPS 57
Score = 27.9 bits (62), Expect = 0.73
Identities = 16/42 (38%), Positives = 22/42 (52%), Gaps = 4/42 (9%)
Query: 73 LELRRGSVYTVTERCQDGWFKG---TSQR-TQRSGVFPGNYV 110
L +R G + TV E+ DG +KG +Q R G FP + V
Sbjct: 18 LNVRAGDIITVLEQHPDGRWKGHIHDNQTGNDRVGYFPPSLV 59
>gnl|CDD|227547 COG5222, COG5222, Uncharacterized conserved protein, contains RING
Zn-finger [General function prediction only].
Length = 427
Score = 33.2 bits (75), Expect = 0.056
Identities = 20/70 (28%), Positives = 32/70 (45%), Gaps = 6/70 (8%)
Query: 7 NDLLECSVCLDRLDTSSKVLPCQHTFCKKCLEE-IVSSHKELRCPECPTFVPEYIAIYPY 65
N L+C +C L K C HTFC +C+ ++ S + CP C + + +
Sbjct: 272 NISLKCPLCHCLLRNPMKTPCCGHTFCDECIGTALLDSDFK--CPNCSR---KDVLLDGL 326
Query: 66 KPQKDDELEL 75
P D +LE+
Sbjct: 327 TPDIDKKLEV 336
>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 = 30.7 bits (69), Expect = 0.064
Identities = 16/56 (28%), Positives = 26/56 (46%), Gaps = 2/56 (3%)
Query: 114 KFRCIVPYPP-NSEYELELRVGD-LIYVHKKRDDGWYKGTLQRTGRTGLFPASFMK 167
K + I P+ N++ L GD + + + DGW G T G FP+S+ +
Sbjct: 2 KVKTIFPHTAGNNKTLLSFAQGDVITLLIPEEKDGWLYGEHDTTKARGWFPSSYTR 57
Score = 26.0 bits (57), Expect = 2.9
Identities = 10/25 (40%), Positives = 13/25 (52%)
Query: 88 QDGWFKGTSQRTQRSGVFPGNYVAP 112
+DGW G T+ G FP +Y P
Sbjct: 34 KDGWLYGEHDTTKARGWFPSSYTRP 58
>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 = 30.4 bits (69), Expect = 0.069
Identities = 16/59 (27%), Positives = 26/59 (44%), Gaps = 8/59 (13%)
Query: 59 YIAIYPYKPQKDDELELRRGSVYTVTERCQ-----DGWFKGTSQRTQRSGVFPGNYVAP 112
Y A+Y ++ + EL + G V TV E+ + W + + G P NY+A
Sbjct: 2 YYALYTFEARSPGELSVTEGQVVTVLEKHDLKGNPEWWL---VEDRGKQGYVPSNYLAK 57
>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 = 30.4 bits (69), Expect = 0.071
Identities = 11/54 (20%), Positives = 24/54 (44%)
Query: 59 YIAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYVAP 112
Y A+Y + +EL L++ + + ++ +GW+ + G P Y+
Sbjct: 2 YKALYDFAGSVANELSLKKDDIVYIVQKEDNGWWLAKKLDESKEGWVPAAYLEE 55
Score = 29.3 bits (66), Expect = 0.18
Identities = 12/47 (25%), Positives = 26/47 (55%)
Query: 121 YPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFMK 167
+ + EL L+ D++Y+ +K D+GW+ + G PA++++
Sbjct: 8 FAGSVANELSLKKDDIVYIVQKEDNGWWLAKKLDESKEGWVPAAYLE 54
>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 = 30.7 bits (69), Expect = 0.071
Identities = 14/43 (32%), Positives = 24/43 (55%), Gaps = 2/43 (4%)
Query: 123 PNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGR--TGLFPA 163
P E L+ + GD+I + K D W++G ++ +G GL P+
Sbjct: 17 PCKEAGLKFQTGDIIQIINKDDSNWWQGRVEGSGEESAGLIPS 59
>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 = 30.7 bits (69), Expect = 0.071
Identities = 18/62 (29%), Positives = 25/62 (40%), Gaps = 13/62 (20%)
Query: 61 AIYPYKPQKDDELELRRGSVYTVT-----ERCQDGWFKGTSQR--------TQRSGVFPG 107
A + Y DEL+L+ G V V E +GW G + + GVFP
Sbjct: 7 AQHDYTATDTDELQLKAGDVVLVIPFQNPEEQDEGWLMGVKESDWNQHKKLEKCRGVFPE 66
Query: 108 NY 109
N+
Sbjct: 67 NF 68
>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 = 30.3 bits (69), Expect = 0.076
Identities = 16/55 (29%), Positives = 23/55 (41%), Gaps = 5/55 (9%)
Query: 60 IAIYPYKPQKDDELELRRGSVYTVTERCQD----GWFKGTSQRTQRSGVFPGNYV 110
A Y + + +DEL R G + + GW T Q+ G+ P NYV
Sbjct: 3 RAEYDFVAESEDELSFRAGDKLRLAPKELQPRVRGWLLATVD-GQKIGLVPANYV 56
>gnl|CDD|227719 COG5432, RAD18, RING-finger-containing E3 ubiquitin ligase
[Signal transduction mechanisms].
Length = 391
Score = 32.8 bits (74), Expect = 0.078
Identities = 15/48 (31%), Positives = 22/48 (45%), Gaps = 5/48 (10%)
Query: 6 LNDLLECSVCLDRLDTSSKVL-PCQHTFCKKCLEEIVSSHKELRCPEC 52
L+ +L C +C R+ S C HTFC C+ + + CP C
Sbjct: 22 LDSMLRCRICDCRI--SIPCETTCGHTFCSLCIRRHLGTQP--FCPVC 65
>gnl|CDD|212841 cd11908, SH3_ITK, Src Homology 3 domain of Interleukin-2-inducible
T-cell Kinase. ITK (also known as Tsk or Emt) 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. ITK is expressed in T-cells and mast cells, and
is important in their development and differentiation.
Of the three Tec kinases expressed in T-cells, ITK plays
the predominant role in T-cell receptor (TCR) signaling.
It is activated by phosphorylation upon TCR crosslinking
and is involved in the pathway resulting in
phospholipase C-gamma1 activation and actin
polymerization. It also plays a role in the downstream
signaling of the T-cell costimulatory receptor CD28, the
T-cell surface receptor CD2, and the chemokine receptor
CXCR4. In addition, ITK is crucial for the development
of T-helper(Th)2 effector responses. 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 = 30.4 bits (68), Expect = 0.086
Identities = 13/52 (25%), Positives = 23/52 (44%), Gaps = 1/52 (1%)
Query: 60 IAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYVA 111
IA+Y Y+ EL LR Y + + + W++ + G P +Y+
Sbjct: 4 IALYDYQTNDPQELALRYNEEYHLLDSSEIHWWR-VQDKNGHEGYVPSSYLV 54
>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 = 30.3 bits (68), Expect = 0.086
Identities = 17/48 (35%), Positives = 23/48 (47%), Gaps = 2/48 (4%)
Query: 61 AIYPYKPQKDDELELRRGSVYTVTERCQDGWFKG--TSQRTQRSGVFP 106
A+Y Y Q +EL G++ + R QDG G + R GVFP
Sbjct: 4 ALYSYTGQSPEELSFPEGALIRLLPRAQDGVDDGFWRGEFGGRVGVFP 51
>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 = 30.3 bits (68), Expect = 0.089
Identities = 18/53 (33%), Positives = 26/53 (49%), Gaps = 11/53 (20%)
Query: 64 PYKP----QKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYVAP 112
P KP Q D +EL RG + W++G +T++SG FP + V P
Sbjct: 15 PGKPVLTFQTGDVIELLRGDPDSP-------WWEGRLLQTKKSGYFPSSSVKP 60
Score = 28.4 bits (63), Expect = 0.49
Identities = 17/49 (34%), Positives = 28/49 (57%), Gaps = 2/49 (4%)
Query: 120 PYPPNSEYELELRVGDLIYVHKKRDDG-WYKGTLQRTGRTGLFPASFMK 167
P PP L + GD+I + + D W++G L +T ++G FP+S +K
Sbjct: 12 PAPPGKPV-LTFQTGDVIELLRGDPDSPWWEGRLLQTKKSGYFPSSSVK 59
>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 = 30.0 bits (68), Expect = 0.095
Identities = 14/37 (37%), Positives = 22/37 (59%), Gaps = 2/37 (5%)
Query: 129 LELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASF 165
L + GD+I V ++ D+ W +G L + G+FP SF
Sbjct: 19 LTFKKGDVITVIRRVDENWAEGRL--GDKIGIFPISF 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 = 30.1 bits (68), Expect = 0.095
Identities = 15/53 (28%), Positives = 25/53 (47%), Gaps = 4/53 (7%)
Query: 61 AIYPYKPQKDD--ELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYVA 111
A+YPY DD EL +G + V++ W++ +G+ P NY+
Sbjct: 4 ALYPYDASPDDPNELSFEKGEILEVSDT-SGKWWQARKSNG-ETGICPSNYLQ 54
>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 = 0.10
Identities = 14/55 (25%), Positives = 29/55 (52%), Gaps = 1/55 (1%)
Query: 59 YIAIYPYKPQKDDELELRRGSVYTVTERCQDG-WFKGTSQRTQRSGVFPGNYVAP 112
++A+Y + +++L +++G V ++G W + S+ T G P NY+ P
Sbjct: 2 FVALYDFVASGENQLSIKKGEQLRVLGYNKNGEWCEAESKSTGGQGWVPSNYITP 56
>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 = 29.8 bits (67), Expect = 0.11
Identities = 22/59 (37%), Positives = 31/59 (52%), Gaps = 6/59 (10%)
Query: 112 PAKFRCIVPYPPNSEYE---LELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFMK 167
PA R I PN+ Y+ L L VGDL+ V K G ++G L G+ G FP + ++
Sbjct: 1 PAYARVIQKRVPNA-YDKTALALEVGDLVKVTKINVSGQWEGELN--GKVGHFPFTHVE 56
>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 = 0.11
Identities = 13/52 (25%), Positives = 27/52 (51%), Gaps = 2/52 (3%)
Query: 59 YIAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYV 110
++ + Y+PQ + E+ L +G V + G+++G+++ G FP V
Sbjct: 3 FVVVKSYQPQVEGEIPLHKGDRVKVLSIGEGGFWEGSAR--GHVGWFPAECV 52
>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 = 29.9 bits (67), Expect = 0.12
Identities = 17/55 (30%), Positives = 25/55 (45%), Gaps = 5/55 (9%)
Query: 113 AKFRCIVPYPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQ-RTGRTGLFPASFM 166
A + C+ P EL G++I V + D W+ G + R G FP SF+
Sbjct: 4 ALYNCVADNPD----ELTFSEGEIIIVDGEEDKEWWIGHIDGEPTRRGAFPVSFV 54
>gnl|CDD|212982 cd12049, SH3_DOCK4_B, Src Homology 3 domain of Class B Dedicator of
Cytokinesis 4. Dock4 is a class B DOCK and is an
atypical guanine nucleotide exchange factor (GEF) that
lacks the conventional Dbl homology (DH) domain. It
plays a role in regulating dendritic growth and
branching in hippocampal neurons, where it is highly
expressed. It may also regulate spine morphology and
synapse formation. Dock4 activates the Ras family GTPase
Rap1, probably indirectly through interaction with Rap
regulatory proteins. 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 B DOCKs also contain an SH3 domain at the
N-terminal region and a PxxP motif at the C-terminus.
The SH3 domain of Dock4 binds to DHR-2 in an
autoinhibitory manner; binding of the scaffold protein
Elmo to the SH3 domain of Dock4 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 = 29.8 bits (67), Expect = 0.13
Identities = 17/55 (30%), Positives = 28/55 (50%), Gaps = 8/55 (14%)
Query: 113 AKFRCIVPYPPNSEYELELRVGDLIYVHKKRDDGWYKG-TLQRTGRTGLFPASFM 166
A FR V + L L +GD + + +K +GWY+G L+ G+FP ++
Sbjct: 6 ASFRGTVQH------GLTLEIGDTVQILEKC-EGWYRGFALKNPNVKGIFPQLYL 53
>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 = 29.7 bits (67), Expect = 0.14
Identities = 9/26 (34%), Positives = 14/26 (53%)
Query: 61 AIYPYKPQKDDELELRRGSVYTVTER 86
A++ Y+ + DEL R G TV +
Sbjct: 5 ALFDYEAENGDELSFREGDELTVLRK 30
Score = 28.1 bits (63), Expect = 0.45
Identities = 10/25 (40%), Positives = 13/25 (52%)
Query: 121 YPPNSEYELELRVGDLIYVHKKRDD 145
Y + EL R GD + V +K DD
Sbjct: 9 YEAENGDELSFREGDELTVLRKGDD 33
>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 = 29.3 bits (65), Expect = 0.19
Identities = 15/40 (37%), Positives = 21/40 (52%), Gaps = 2/40 (5%)
Query: 128 ELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFMK 167
EL + GD+I V + W+ G Q G FPASF++
Sbjct: 20 ELAFKAGDVIKVLDASNKDWWWG--QIDDEEGWFPASFVR 57
>gnl|CDD|212970 cd12037, SH3_MPP2, Src Homology 3 domain of Membrane Protein,
Palmitoylated 2 (or MAGUK p55 subfamily member 2). MPP2
is a scaffolding protein that interacts with the
non-receptor tyrosine kinase c-Src in epithelial cells
to negatively regulate its activity and morphological
function. It is one of seven vertebrate homologs of the
Drosophila Stardust protein, which is required in
establishing cell polarity, and it contains two L27
domains followed by the core of 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 = 59
Score = 29.1 bits (65), Expect = 0.19
Identities = 13/41 (31%), Positives = 20/41 (48%)
Query: 123 PNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPA 163
P E L+ R GDL+ + + D W++ G GL P+
Sbjct: 17 PCKEAGLKFRAGDLLQIVNQEDPNWWQACHVEGGSAGLIPS 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 = 29.2 bits (66), Expect = 0.20
Identities = 14/52 (26%), Positives = 25/52 (48%), Gaps = 2/52 (3%)
Query: 114 KFRCIVPYPPNSEYELELRVGDLIYVHKKRDDG-WYKGTLQRTGRTGLFPAS 164
K+ + Y +L ++ GDL+ + + D+G W L T + G PA+
Sbjct: 1 KYTVVADYEKGGPDDLTVKSGDLVQLIHEGDEGQWLVKNL-STRKEGWVPAA 51
>gnl|CDD|227561 COG5236, COG5236, Uncharacterized conserved protein, contains RING
Zn-finger [General function prediction only].
Length = 493
Score = 31.5 bits (71), Expect = 0.20
Identities = 12/43 (27%), Positives = 18/43 (41%), Gaps = 1/43 (2%)
Query: 12 CSVCLDRLDTSSKVLPCQHTFCKKCLEEIVSSHKELRCPECPT 54
C +C S+ PC H C C + + + + CP C T
Sbjct: 64 CQICAGSTTYSA-RYPCGHQICHACAVRLRALYMQKGCPLCRT 105
>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 = 28.9 bits (64), Expect = 0.23
Identities = 10/35 (28%), Positives = 20/35 (57%)
Query: 58 EYIAIYPYKPQKDDELELRRGSVYTVTERCQDGWF 92
+Y+ + Y+ Q+ E+ L G V + E+ + GW+
Sbjct: 2 QYVVVANYQKQESSEISLYVGQVVDIIEKNESGWW 36
>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 = 28.9 bits (64), Expect = 0.25
Identities = 15/52 (28%), Positives = 26/52 (50%), Gaps = 4/52 (7%)
Query: 60 IAIYPYKPQKDDELELRRGSVYTVTERCQDGW-FKGTSQRTQRSGVFPGNYV 110
IA + Y Q+D EL++++ + + + W + + RT G P NYV
Sbjct: 7 IAKWDYTAQQDQELDIKKNERLWLLDDSKTWWRVRNAANRT---GYVPSNYV 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 = 28.8 bits (65), Expect = 0.27
Identities = 15/52 (28%), Positives = 25/52 (48%), Gaps = 1/52 (1%)
Query: 59 YIAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYV 110
Y A+Y +K + + L G + + ER W+ T+ + +G P NYV
Sbjct: 2 YRALYDFKSAEPNTLSFSEGETFLLLERSNAHWWLVTN-HSGETGYVPANYV 52
>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 = 28.4 bits (64), Expect = 0.30
Identities = 15/54 (27%), Positives = 27/54 (50%), Gaps = 3/54 (5%)
Query: 60 IAIYPYKPQKDDELELRRGSVYTVTER--CQDGWFKGTSQRTQRSGVFPGNYVA 111
+A+YP+ + D+EL +G + E+ W+K + +G+ P NYV
Sbjct: 3 VALYPFTGENDEELSFEKGERLEIIEKPEDDPDWWKARNALGT-TGLVPRNYVE 55
>gnl|CDD|227544 COG5219, COG5219, Uncharacterized conserved protein, contains RING
Zn-finger [General function prediction only].
Length = 1525
Score = 31.2 bits (70), Expect = 0.30
Identities = 15/53 (28%), Positives = 25/53 (47%), Gaps = 6/53 (11%)
Query: 11 ECSVCLDRLDTSSKVLP------CQHTFCKKCLEEIVSSHKELRCPECPTFVP 57
EC++C LD + LP C++ F +CL + +S CP C + +
Sbjct: 1471 ECAICYSVLDMVDRSLPSKRCATCKNKFHTRCLYKWFASSARSNCPLCRSEIT 1523
>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 = 28.5 bits (63), Expect = 0.33
Identities = 16/51 (31%), Positives = 27/51 (52%), Gaps = 3/51 (5%)
Query: 62 IYPYKPQKDDELELRRGSVYTVTERCQDG--WFKGTSQRTQRSGVFPGNYV 110
+YP+ ++EL +G V E+ ++ W+K + R Q G+ P NYV
Sbjct: 6 LYPFSSVTEEELNFEKGETMEVIEKPENDPEWWKCKNSRGQ-VGLVPKNYV 55
>gnl|CDD|218794 pfam05883, Baculo_RING, Baculovirus U-box/Ring-like domain. This
family consists of several Baculovirus proteins of
around 130 residues in length. The function of this
family is unknown, but it appears to be related to the
U-box and ring finger domain by profile-profile
comparison.
Length = 135
Score = 29.9 bits (68), Expect = 0.35
Identities = 12/52 (23%), Positives = 22/52 (42%), Gaps = 9/52 (17%)
Query: 2 DEWTLNDLLECSVCLDRLD--------TSSKVLPCQHTFCKKCLEEIVSSHK 45
++W +EC++CLDR++ T L + F +C + K
Sbjct: 20 EQWP-RCTVECAICLDRINDNDGVVAVTDGGTLNLEKMFHAECDKRWKRERK 70
>gnl|CDD|212971 cd12038, SH3_MPP6, Src Homology 3 domain of Membrane Protein,
Palmitoylated 6 (or MAGUK p55 subfamily member 6).
MPP6, also called Veli-associated MAGUK 1 (VAM-1) or
PALS2, is a scaffolding protein that binds to Veli-1, a
homolog of Caenorhabditis Lin-7. It is one of seven
vertebrate homologs of the Drosophila Stardust protein,
which is required in establishing cell polarity, and it
contains two L27 domains followed by the core of 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 = 61
Score = 28.5 bits (63), Expect = 0.43
Identities = 11/45 (24%), Positives = 24/45 (53%), Gaps = 1/45 (2%)
Query: 123 PNSEYELELRVGDLIYVHKKRDDGWYKGT-LQRTGRTGLFPASFM 166
P E L+ G+++ + + D W++ + ++ G GL P+ F+
Sbjct: 17 PCKEAGLKFSKGEILQIVNREDPNWWQASHVKEGGSAGLIPSQFL 61
>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 = 28.1 bits (63), Expect = 0.52
Identities = 11/52 (21%), Positives = 30/52 (57%), Gaps = 3/52 (5%)
Query: 60 IAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQ-RSGVFPGNYV 110
A++ + D++L ++G + TV + ++ W+ ++ ++ ++G+ P YV
Sbjct: 4 RALFDFPGNDDEDLPFKKGEILTVIRKPEEQWW--NARNSEGKTGMIPVPYV 53
Score = 24.6 bits (54), Expect = 7.0
Identities = 12/56 (21%), Positives = 30/56 (53%), Gaps = 1/56 (1%)
Query: 113 AKFRCIVPYPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFMKQ 168
R + +P N + +L + G+++ V +K ++ W+ G+TG+ P ++++
Sbjct: 1 EYVRALFDFPGNDDEDLPFKKGEILTVIRKPEEQWWNAR-NSEGKTGMIPVPYVEK 55
>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 = 27.7 bits (62), Expect = 0.54
Identities = 13/51 (25%), Positives = 20/51 (39%), Gaps = 2/51 (3%)
Query: 118 IVPYPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFMKQ 168
I + + +L GD + V +K W+ G G PAS + Q
Sbjct: 5 IADFVATDDSQLSFESGDKLLVLRKPSVDWWWAEHN--GCCGYIPASHLHQ 53
Score = 26.2 bits (58), Expect = 2.5
Identities = 11/55 (20%), Positives = 19/55 (34%), Gaps = 2/55 (3%)
Query: 58 EYIAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYVAP 112
EY+AI + D +L G V + W+ G P +++
Sbjct: 1 EYVAIADFVATDDSQLSFESGDKLLVLRKPSVDWWWAEHNGC--CGYIPASHLHQ 53
>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 = 27.8 bits (62), Expect = 0.59
Identities = 15/53 (28%), Positives = 23/53 (43%)
Query: 59 YIAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYVA 111
+ A+Y + + EL + +G V E D F SG+ P +YVA
Sbjct: 2 FTALYDFTARSTHELSVEQGDKLCVIEEEGDYIFARKLTGNPESGLVPASYVA 54
>gnl|CDD|213014 cd12081, SH3_CASK, Src Homology 3 domain of
Calcium/calmodulin-dependent Serine protein Kinase.
CASK is a scaffolding protein that is highly expressed
in the mammalian nervous system and plays roles in
synaptic protein targeting, neural development, and gene
expression regulation. CASK interacts with many
different binding partners including parkin, neurexin,
syndecans, calcium channel proteins, caskin, among
others, to perform specific functions in different
subcellular locations. Disruption of the CASK gene in
mice results in neonatal lethality while mutations in
the human gene have been associated with X-linked mental
retardation. Drosophila CASK is associated with both
pre- and postsynaptic membranes and is crucial in
synaptic transmission and vesicle cycling. CASK contains
an N-terminal calmodulin-dependent kinase (CaMK)-like
domain, two L27 domains, followed by the core of 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 = 27.9 bits (62), Expect = 0.59
Identities = 13/43 (30%), Positives = 23/43 (53%), Gaps = 2/43 (4%)
Query: 123 PNSEYELELRVGDLIYVHKKRDDGWYKGTLQRT--GRTGLFPA 163
P + + RVGD++ + K D W++ L+ + G GL P+
Sbjct: 17 PCKQAGIRFRVGDILQIISKDDHNWWQAKLENSKNGTAGLIPS 59
>gnl|CDD|212969 cd12036, SH3_MPP5, Src Homology 3 domain of Membrane Protein,
Palmitoylated 5 (or MAGUK p55 subfamily member 5).
MPP5, also called PALS1 (Protein associated with Lin7)
or Nagie oko protein in zebrafish or Stardust in
Drosophila, is a scaffolding protein which associates
with Crumbs homolog 1 (CRB1), CRB2, or CRB3 through its
PDZ domain and with PALS1-associated tight junction
protein (PATJ) or multi-PDZ domain protein 1 (MUPP1)
through its L27 domain. The resulting tri-protein
complexes are core proteins of the Crumb complex, which
localizes at tight junctions or subapical regions, and
is involved in the maintenance of apical-basal polarity
in epithelial cells and the morphogenesis and function
of photoreceptor cells. MPP5 is critical for the proper
stratification of the retina and is also expressed in T
lymphocytes where it is important for TCR-mediated
activation of NFkB. Drosophila Stardust exists in
several isoforms, some of which show opposing functions
in photoreceptor cells, which suggests that the relative
ratio of different Crumbs complexes regulates
photoreceptor homeostasis. MPP5 contains two L27 domains
followed by the core of 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 = 63
Score = 27.8 bits (62), Expect = 0.62
Identities = 10/30 (33%), Positives = 17/30 (56%)
Query: 120 PYPPNSEYELELRVGDLIYVHKKRDDGWYK 149
PY P E L + GD+++V + D W++
Sbjct: 14 PYIPCRELGLSFQKGDILHVISQEDPNWWQ 43
>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 = 27.5 bits (61), Expect = 0.69
Identities = 13/41 (31%), Positives = 20/41 (48%), Gaps = 2/41 (4%)
Query: 128 ELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFMKQ 168
+LE GD I + + + W +G GR G+FP F +
Sbjct: 15 DLEFSQGDTIDILSEVNQEWLEGHCD--GRIGIFPKCFAVR 53
Score = 27.5 bits (61), Expect = 0.72
Identities = 12/53 (22%), Positives = 21/53 (39%), Gaps = 2/53 (3%)
Query: 60 IAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYVAP 112
+A + Y Q ++LE +G + W +G R G+FP +
Sbjct: 3 VAQHDYSAQGPEDLEFSQGDTIDILSEVNQEWLEGHCDG--RIGIFPKCFAVR 53
>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 = 27.7 bits (61), Expect = 0.70
Identities = 13/53 (24%), Positives = 30/53 (56%), Gaps = 2/53 (3%)
Query: 116 RCIVPYPPNSEYELELRVGDLIYV-HKKRDDGWYKGTLQRTGRTGLFPASFMK 167
+ + P+ ++E L ++ G+++Y+ + + DGW + Q G G P S+++
Sbjct: 4 KALYPFDGSNEGTLAMKEGEVLYIIEEDKGDGWTRARKQ-NGEEGYVPTSYIE 55
>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 = 27.7 bits (61), Expect = 0.74
Identities = 14/42 (33%), Positives = 23/42 (54%), Gaps = 2/42 (4%)
Query: 126 EYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFMK 167
+ EL + GD+I V + + W+ G + R FPASF++
Sbjct: 14 DQELAFKAGDVIRVLEASNKDWWWG--RNEDREAWFPASFVR 53
>gnl|CDD|224484 COG1568, COG1568, Predicted methyltransferases [General function
prediction only].
Length = 354
Score = 29.4 bits (66), Expect = 0.85
Identities = 13/34 (38%), Positives = 15/34 (44%)
Query: 121 YPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQR 154
N EY E R L V K +D WYK + R
Sbjct: 292 EYVNWEYIEETRAWKLAPVKKLPEDIWYKSYMFR 325
>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 = 27.6 bits (61), Expect = 0.87
Identities = 9/26 (34%), Positives = 15/26 (57%)
Query: 61 AIYPYKPQKDDELELRRGSVYTVTER 86
A++ Y+ + DDEL + G T+ R
Sbjct: 5 ALWDYEGESDDELSFKEGDCMTILRR 30
>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 = 27.2 bits (60), Expect = 1.1
Identities = 16/53 (30%), Positives = 24/53 (45%), Gaps = 5/53 (9%)
Query: 61 AIYPYKPQKDDELELRRGSVYTVTER---CQDGWFKGTSQRTQRSGVFPGNYV 110
A+Y + +EL RRG V V +R GW+ + Q G+ P N +
Sbjct: 5 ALYDNAAESPEELSFRRGDVLMVLKREHGSLPGWWLCSLHGQQ--GIAPANRL 55
>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 = 27.0 bits (60), Expect = 1.1
Identities = 18/53 (33%), Positives = 26/53 (49%), Gaps = 3/53 (5%)
Query: 60 IAIYPYKPQKDDELELRRGSVYTVTERCQDG-WFKGTSQRTQRSGVFPGNYVA 111
+A+ + EL +R G T+ +DG W+K +S T R P NYVA
Sbjct: 3 VALCNFPSGGPTELSIRMGEQLTILS--EDGDWWKVSSAVTGRECYIPSNYVA 53
>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 = 26.8 bits (60), Expect = 1.2
Identities = 9/35 (25%), Positives = 15/35 (42%), Gaps = 1/35 (2%)
Query: 60 IAIYPYKPQKDDELELRRGSVYTVTERCQ-DGWFK 93
A+Y + + L + G + V E DGW +
Sbjct: 3 TALYDFDGTSEGTLSMEEGEILLVLEEDGGDGWTR 37
>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 = 26.8 bits (59), Expect = 1.2
Identities = 14/53 (26%), Positives = 24/53 (45%), Gaps = 2/53 (3%)
Query: 58 EYIAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYV 110
E IA + Y + EL ++G+ + R D W++G G+ P Y+
Sbjct: 1 EAIAKFDYVGRSARELSFKKGASLLLYHRASDDWWEGRHNGID--GLVPHQYI 51
Score = 25.3 bits (55), Expect = 4.5
Identities = 16/56 (28%), Positives = 26/56 (46%), Gaps = 6/56 (10%)
Query: 111 APAKFRCIVPYPPNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFM 166
A AKF Y S EL + G + ++ + D W++G + G GL P ++
Sbjct: 2 AIAKF----DYVGRSARELSFKKGASLLLYHRASDDWWEG--RHNGIDGLVPHQYI 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 = 26.8 bits (59), Expect = 1.3
Identities = 12/54 (22%), Positives = 24/54 (44%), Gaps = 2/54 (3%)
Query: 58 EYIAIYPYKPQKDDELELRRGSVYTVTERCQ-DGWFKGTSQRTQRSGVFPGNYV 110
E A+Y + + + + G ++ E + DGW + + T G P +Y+
Sbjct: 1 ECKALYAFVGSSEGTISMTEGEKLSLVEEDKGDGWTR-VRRDTGEEGYVPTSYI 53
>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 = 26.9 bits (59), Expect = 1.3
Identities = 12/38 (31%), Positives = 19/38 (50%), Gaps = 1/38 (2%)
Query: 73 LELRRGSVYTV-TERCQDGWFKGTSQRTQRSGVFPGNY 109
L + G T+ +DGW G ++T+ G FP +Y
Sbjct: 18 LSFKEGDYITLLVPEARDGWHYGECEKTKMRGWFPFSY 55
Score = 26.9 bits (59), Expect = 1.6
Identities = 15/41 (36%), Positives = 22/41 (53%), Gaps = 3/41 (7%)
Query: 129 LELRVGDLI--YVHKKRDDGWYKGTLQRTGRTGLFPASFMK 167
L + GD I V + RD GW+ G ++T G FP S+ +
Sbjct: 18 LSFKEGDYITLLVPEARD-GWHYGECEKTKMRGWFPFSYTR 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 = 26.7 bits (59), Expect = 1.5
Identities = 15/50 (30%), Positives = 20/50 (40%), Gaps = 1/50 (2%)
Query: 61 AIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYV 110
A+Y Y Q ++EL G V + W TQ G P NY+
Sbjct: 4 ALYDYDKQTEEELSFNEGDTLDVYDDSDSDWILVGFNGTQ-FGFVPANYI 52
>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 = 26.3 bits (58), Expect = 1.7
Identities = 12/43 (27%), Positives = 17/43 (39%), Gaps = 2/43 (4%)
Query: 67 PQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNY 109
+L R+G + V R D W T R G+ P +Y
Sbjct: 10 ATDSGQLSFRKGDILRVIARVDDDWLLCT--RGSTKGLVPLSY 50
Score = 24.7 bits (54), Expect = 6.8
Identities = 14/38 (36%), Positives = 19/38 (50%), Gaps = 2/38 (5%)
Query: 128 ELELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASF 165
+L R GD++ V + DD W T R GL P S+
Sbjct: 15 QLSFRKGDILRVIARVDDDWLLCT--RGSTKGLVPLSY 50
>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 = 26.7 bits (59), Expect = 1.7
Identities = 13/51 (25%), Positives = 25/51 (49%), Gaps = 2/51 (3%)
Query: 60 IAIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYV 110
+A+Y Y+ + E+ +++G + T+ W+K + R G P YV
Sbjct: 3 VALYDYQEKSPREVSMKKGDILTLLNSSNKDWWK--VEVNDRQGFVPAAYV 51
>gnl|CDD|222944 PHA02929, PHA02929, N1R/p28-like protein; Provisional.
Length = 238
Score = 28.2 bits (63), Expect = 1.8
Identities = 15/51 (29%), Positives = 25/51 (49%), Gaps = 9/51 (17%)
Query: 11 ECSVCLDRL-DTSSK-----VLP-CQHTFCKKCLEEIVSSHKELRCPECPT 54
EC++C++++ D K +L C H FC +C++ CP C T
Sbjct: 176 ECAICMEKVYDKEIKNMYFGILSNCNHVFCIECIDIWKKEKN--TCPVCRT 224
>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 = 26.8 bits (59), Expect = 2.0
Identities = 18/61 (29%), Positives = 28/61 (45%), Gaps = 13/61 (21%)
Query: 62 IYPYKPQKDDELELRRGSVYTV----TERCQD-GWFKGTSQR--------TQRSGVFPGN 108
++ ++ DELEL+RG + V T QD GW G + + G+FP N
Sbjct: 8 LHDFEAANSDELELKRGDIVLVVPSETAADQDAGWLTGVKESDWLQYRDASAYKGLFPEN 67
Query: 109 Y 109
+
Sbjct: 68 F 68
>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 = 26.4 bits (58), Expect = 2.2
Identities = 16/51 (31%), Positives = 26/51 (50%), Gaps = 2/51 (3%)
Query: 119 VPYPPNSEYE-LELRVGDLIYVHK-KRDDGWYKGTLQRTGRTGLFPASFMK 167
P PP + L L+ GD++ + K + W++G T G FP+S +K
Sbjct: 11 NPPPPGAGGPVLTLQTGDVVELLKGDAESPWWEGRNVATREVGYFPSSSVK 61
Score = 25.3 bits (55), Expect = 6.0
Identities = 13/49 (26%), Positives = 21/49 (42%), Gaps = 7/49 (14%)
Query: 64 PYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNYVAP 112
Q D +EL +G + W++G + T+ G FP + V P
Sbjct: 21 VLTLQTGDVVELLKGDAESP-------WWEGRNVATREVGYFPSSSVKP 62
>gnl|CDD|216745 pfam01861, DUF43, Protein of unknown function DUF43. This family
includes archaebacterial proteins of unknown function.
All the members are 350-400 amino acids long.
Length = 243
Score = 28.2 bits (63), Expect = 2.3
Identities = 13/32 (40%), Positives = 15/32 (46%)
Query: 123 PNSEYELELRVGDLIYVHKKRDDGWYKGTLQR 154
N Y E R L+ V KK + WYK L R
Sbjct: 184 ENWGYIEETRAWKLLPVKKKPEKIWYKSYLFR 215
>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 = 26.5 bits (58), Expect = 2.4
Identities = 17/56 (30%), Positives = 24/56 (42%), Gaps = 1/56 (1%)
Query: 58 EYIAIYPYKPQKDDELELRRGSVYTVTE-RCQDGWFKGTSQRTQRSGVFPGNYVAP 112
EY I P L L G + +T+ + W++G + T G FP N V P
Sbjct: 7 EYYGIPPPPGAFGPFLRLNPGDIVELTKAEAEQNWWEGRNTSTNEIGWFPCNRVKP 62
>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 = 26.0 bits (57), Expect = 2.6
Identities = 12/38 (31%), Positives = 21/38 (55%), Gaps = 2/38 (5%)
Query: 129 LELRVGDLIYVHKKRDDGWYKGTLQRTGRTGLFPASFM 166
L+ + D+I V + D+ W +G L + G+FP F+
Sbjct: 22 LKFQKDDIITVISRVDENWAEGKL--GDQVGIFPILFV 57
>gnl|CDD|212814 cd11881, SH3_MYO7A, Src Homology 3 domain of Myosin VIIa and
similar proteins. Myo7A is an uncoventional myosin that
is involved in organelle transport. It is required for
sensory function in both Drosophila and mammals.
Mutations in the Myo7A gene cause both syndromic
deaf-blindness [Usher syndrome I (USH1)] and
nonsyndromic (DFNB2 and DFNA11) deafness in humans. It
contains an N-terminal motor domain, light chain-binding
IQ motifs, a coiled-coil region for heavy chain
dimerization, and a tail consisting of a pair of
MyTH4-FERM tandems separated by a 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 = 64
Score = 25.9 bits (57), Expect = 3.0
Identities = 17/49 (34%), Positives = 22/49 (44%), Gaps = 5/49 (10%)
Query: 120 PYPPNSEYELELRVGDLIYVHKKRDD-----GWYKGTLQRTGRTGLFPA 163
P P + L GDLI + + + GW G RTG+ G FPA
Sbjct: 11 PNPSDGSSFLSFAKGDLIILDQDTGEQVMNSGWCNGRNDRTGQRGDFPA 59
>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 = 25.7 bits (57), Expect = 3.1
Identities = 14/52 (26%), Positives = 22/52 (42%), Gaps = 2/52 (3%)
Query: 61 AIYPYKPQKDDELELRRGSVYTVTERCQDG--WFKGTSQRTQRSGVFPGNYV 110
A ++ + EL R+G + G WF G S+ + R G P N+
Sbjct: 4 AKMDFEGVEPGELSFRQGDSIEIIGDLIPGLQWFVGRSKSSGRVGFVPTNHF 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 = 25.7 bits (56), Expect = 3.4
Identities = 14/49 (28%), Positives = 22/49 (44%)
Query: 61 AIYPYKPQKDDELELRRGSVYTVTERCQDGWFKGTSQRTQRSGVFPGNY 109
A++ Y + DEL + G + TV + +G + R G P NY
Sbjct: 5 ALWDYSAEFPDELSFKEGDMVTVLRKDGEGTDWWWASLCGREGYVPRNY 53
>gnl|CDD|212966 cd12033, SH3_MPP7, Src Homology 3 domain of Membrane Protein,
Palmitoylated 7 (or MAGUK p55 subfamily member 7). MPP7
is a scaffolding protein that binds to DLG1 and promotes
tight junction formation and epithelial cell polarity.
Mutations in the MPP7 gene may be associated with the
pathogenesis of diabetes and extreme bone mineral
density. It is one of seven vertebrate homologs of the
Drosophila Stardust protein, which is required in
establishing cell polarity, and it contains two L27
domains followed by the core of three domains
characteristic of MAGUK (membrane-associated guanylate
kinase) proteins: 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. 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 = 25.8 bits (56), Expect = 3.5
Identities = 11/43 (25%), Positives = 20/43 (46%), Gaps = 2/43 (4%)
Query: 123 PNSEYELELRVGDLIYVHKKRDDGWYKGTLQRTG--RTGLFPA 163
P E L + GD++ + + D W++ + R GL P+
Sbjct: 17 PCKEAGLSFKKGDILQIMSQDDATWWQAKHEGDANPRAGLIPS 59
>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 = 25.5 bits (56), Expect = 4.1
Identities = 14/50 (28%), Positives = 24/50 (48%), Gaps = 5/50 (10%)
Query: 118 IVPYPPNSEYELELRVGDLIYV---HKKRDDGWYKGTLQRTGRTGLFPAS 164
I Y + EL L VGD++ V + W++G ++ + G FP+
Sbjct: 5 IKRYTAQAPDELSLEVGDIVSVIDMPPPEESTWWRG--KKGFQVGFFPSE 52
>gnl|CDD|212943 cd12010, SH3_SLAP, Src homology 3 domain of Src-Like Adaptor
Protein. SLAP (or SLA1) 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. SLAP has been
shown to interact with the EphA receptor, EpoR, Lck,
PDGFR, Syk, CD79a, c-Cbl, LAT, CD247, and Zap70, among
others. 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. 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 = 25.5 bits (56), Expect = 4.1
Identities = 10/22 (45%), Positives = 12/22 (54%)
Query: 90 GWFKGTSQRTQRSGVFPGNYVA 111
GW+K S +T R PG VA
Sbjct: 32 GWWKVRSLQTGRENYIPGKCVA 53
>gnl|CDD|223572 COG0498, ThrC, Threonine synthase [Amino acid transport and
metabolism].
Length = 411
Score = 27.3 bits (61), Expect = 4.1
Identities = 15/47 (31%), Positives = 20/47 (42%), Gaps = 5/47 (10%)
Query: 33 CKKCLEEIVSSHKELRCPECPTFVPEYIAIYPY--KPQKDDELELRR 77
C KC E + + CP+C F+P YPY + D L L
Sbjct: 8 CLKCGREFSQALLQGLCPDCGLFLPA---EYPYFSLEEIDKLLGLSY 51
>gnl|CDD|99713 cd05830, Sortase_D_5, Sortase D (SrtD) is a membrane transpeptidase
found in gram-positive bacteria that anchors surface
proteins to peptidoglycans of the bacterial cell wall
envelope. This involves a transpeptidation reaction in
which the surface protein substrate is cleaved at the
cell wall sorting signal and covalently linked to
peptidoglycan for display on the bacterial surface.
Sortases are grouped into different classes and
subfamilies based on sequence, membrane topology,
genomic positioning, and cleavage site preference. Class
D sortases are further classified into subfamilies 4 and
5. This group contains a subset of Class D sortases
belonging to subfamily-5 represented by Streptomyces
avermitilis SAV4337. Subfamily-5 sortases recognize a
nonstandard sorting signal (LAXTG) and have replaced
Sortase A in some gram-postive bacteria. They may play a
housekeeping role in the cell.
Length = 137
Score = 26.5 bits (59), Expect = 4.7
Identities = 10/19 (52%), Positives = 11/19 (57%), Gaps = 2/19 (10%)
Query: 130 ELRVGDLIYVHKKRDDGWY 148
+LR GD I V DGWY
Sbjct: 65 KLRPGDKIVVETA--DGWY 81
>gnl|CDD|212745 cd11811, SH3_CHK, Src Homology 3 domain of CSK homologous kinase.
CHK is also referred to as megakaryocyte-associated
tyrosine kinase (Matk). It inhibits Src kinases using a
noncatalytic mechanism by simply binding to them. As a
negative regulator of Src kinases, Chk may play
important roles in cell proliferation, survival, and
differentiation, and consequently, in cancer development
and progression. To inhibit Src kinases that are
anchored to the plasma membrane, CHK is translocated to
the membrane via binding to specific transmembrane
proteins, G-proteins, or adaptor proteins near the
membrane. CHK also plays a role in neural
differentiation in a manner independent of Src by
enhancing MAPK activation via Ras-mediated signaling. It
is a cytoplasmic (or nonreceptor) tyr kinase containing
the Src homology domains, SH3 and SH2, N-terminal to the
catalytic tyr kinase 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 = 25.2 bits (55), Expect = 5.1
Identities = 12/40 (30%), Positives = 20/40 (50%), Gaps = 2/40 (5%)
Query: 66 KPQKDDELELRRGSVYTVTERCQD-GWFKGTSQRTQRSGV 104
KP K EL +G + T+ E C+ GW++ + G+
Sbjct: 12 KP-KPGELAFHKGDIVTIVETCERKGWYRARHNTSGEEGL 50
>gnl|CDD|218464 pfam05142, DUF702, Domain of unknown function (DUF702). Members of
this family are found in various putative zinc finger
proteins.
Length = 155
Score = 26.6 bits (59), Expect = 5.1
Identities = 10/26 (38%), Positives = 14/26 (53%)
Query: 93 KGTSQRTQRSGVFPGNYVAPAKFRCI 118
GTS + + FP +PA FRC+
Sbjct: 93 SGTSPQGTGTSSFPPEVSSPAVFRCV 118
>gnl|CDD|212914 cd11981, SH3_VAV3_1, First 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 = 62
Score = 25.2 bits (55), Expect = 5.2
Identities = 12/49 (24%), Positives = 20/49 (40%), Gaps = 1/49 (2%)
Query: 120 PYPPNSEYELELRVGDLIYVHKKRDDG-WYKGTLQRTGRTGLFPASFMK 167
+ L ++GD I V +++G TG G FP+ +K
Sbjct: 13 KPQLHGGPPLNAQIGDTIEVLYADPHSLFWQGRNLTTGELGFFPSDAVK 61
>gnl|CDD|163511 TIGR03799, NOD_PanD_pyr, putative pyridoxal-dependent aspartate
1-decarboxylase. This enzyme is proposed here to be a
form of aspartate 1-decarboxylase, pyridoxal-dependent,
that represents a non-orthologous displacement to the
more widely distributed pyruvoyl-dependent form
(TIGR00223). Aspartate 1-decarboxylase makes
beta-alanine, used usually in pathothenate
biosynthesis, by decarboxylation from asparatate. A
number of species with the PanB and PanC enzymes,
however, lack PanD. This protein family occurs in a
number of Proteobacteria that lack PanD. This enzyme
family appears to be a pyridoxal-dependent enzyme (see
pfam00282). The family was identified by Partial
Phylogenetic Profiling; members in Geobacter
sulfurreducens, G. metallireducens, and
Pseudoalteromonas atlantica are clustered with the
genes for PanB and PanC. We suggest the gene symbol
panP (panthothenate biosynthesis enzyme,
Pyridoxal-dependent) [Biosynthesis of cofactors,
prosthetic groups, and carriers, Pantothenate and
coenzyme A].
Length = 522
Score = 27.0 bits (60), Expect = 5.8
Identities = 11/26 (42%), Positives = 13/26 (50%)
Query: 34 KKCLEEIVSSHKELRCPECPTFVPEY 59
+K L EI PE PTFV E+
Sbjct: 47 EKPLSEIEKDFSSAEIPEQPTFVSEH 72
>gnl|CDD|237756 PRK14559, PRK14559, putative protein serine/threonine
phosphatase; Provisional.
Length = 645
Score = 26.9 bits (60), Expect = 6.3
Identities = 12/31 (38%), Positives = 16/31 (51%), Gaps = 4/31 (12%)
Query: 27 PCQHTFCKKCLEEIVSSHKELRCPECPTFVP 57
P + FC+KC +S CP+C T VP
Sbjct: 12 PNNNRFCQKC----GTSLTHKPCPQCGTEVP 38
>gnl|CDD|177491 PHA02825, PHA02825, LAP/PHD finger-like protein; Provisional.
Length = 162
Score = 26.3 bits (58), Expect = 7.1
Identities = 19/70 (27%), Positives = 30/70 (42%), Gaps = 7/70 (10%)
Query: 1 MDEWTLNDLLECSVCLDRLDTSSKVLPCQHTF---CKKCLEEIVSSHKELRCPECPTFVP 57
M++ +L D C +C D D + C++ K+CLEE +++ K C C
Sbjct: 1 MEDVSLMDKC-CWICKDEYDVVTNYCNCKNENKIVHKECLEEWINTSKNKSCKICNG--- 56
Query: 58 EYIAIYPYKP 67
Y YK
Sbjct: 57 PYNIKKNYKK 66
>gnl|CDD|212796 cd11862, SH3_MPP, Src Homology 3 domain of Membrane Protein,
Palmitoylated (or MAGUK p55 subfamily member) proteins.
The MPP/p55 subfamily of MAGUK (membrane-associated
guanylate kinase) proteins includes at least eight
vertebrate members (MPP1-7 and CASK), four Drosophila
proteins (Stardust, Varicose, CASK and Skiff), and other
similar proteins; they all contain one each of the core
of three domains characteristic of MAGUK proteins: PDZ,
SH3, and guanylate kinase (GuK). In addition, most
members except for MPP1 contain N-terminal L27 domains
and some also contain a Hook (Protein 4.1 Binding) motif
in between the SH3 and GuK domains. CASK has an
additional calmodulin-dependent kinase (CaMK)-like
domain at the N-terminus. Members of this subfamily are
scaffolding proteins that play important roles in
regulating and establishing cell polarity, cell
adhesion, and synaptic targeting and transmission, among
others. 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 = 61
Score = 24.8 bits (55), Expect = 7.3
Identities = 13/46 (28%), Positives = 21/46 (45%), Gaps = 2/46 (4%)
Query: 120 PYPPNSEYELELRVGDLIYVHKKRDDGWYKGTL--QRTGRTGLFPA 163
P P E L + GD++ + + D W++ GR GL P+
Sbjct: 14 PLIPCKEAGLSFKKGDILQIVNQDDPNWWQARKVGDPNGRAGLIPS 59
>gnl|CDD|219941 pfam08623, TIP120, TATA-binding protein interacting (TIP20).
TIP120 (also known as cullin-associated and
neddylation-dissociated protein 1) is a TATA binding
protein interacting protein that enhances
transcription.
Length = 169
Score = 26.4 bits (59), Expect = 7.3
Identities = 11/29 (37%), Positives = 17/29 (58%), Gaps = 3/29 (10%)
Query: 64 PYKPQKDDELELRRGS---VYTVTERCQD 89
P+K DD LELR+ + +YT+ + C
Sbjct: 32 PFKHVVDDGLELRKLAYETMYTLLDSCFS 60
>gnl|CDD|114297 pfam05566, Pox_vIL-18BP, Orthopoxvirus interleukin 18 binding
protein. Interleukin-18 (IL-18) is a proinflammatory
cytokine that plays a key role in the activation of
natural killer and T helper 1 cell responses
principally by inducing interferon-gamma (IFN-gamma).
Several poxvirus genes encode proteins with sequence
similarity to IL-18BPs. It has been shown that
vaccinia, ectromelia and cowpox viruses secrete from
infected cells a soluble IL-18BP (vIL-18BP) that may
modulate the host antiviral response. The expression of
vIL-18BPs by distinct poxvirus genera that cause local
or general viral dissemination, or persistent or acute
infections in the host, emphasises the importance of
IL-18 in response to viral infections.
Length = 126
Score = 26.2 bits (57), Expect = 7.4
Identities = 18/51 (35%), Positives = 25/51 (49%), Gaps = 6/51 (11%)
Query: 28 CQHTFCK----KCLE-EIVSSHKELRCPECPTFVPEYIAIY-PYKPQKDDE 72
C H + KC +IV+S E RC C F+P++ +Y K K DE
Sbjct: 13 CVHPYVNADEIKCPNLDIVTSSGEFRCSGCVEFMPKFSYMYWLAKDMKSDE 63
>gnl|CDD|132588 TIGR03549, TIGR03549, YcaO domain protein. This family consists of
remarkably well-conserved proteins from gamma and beta
Proteobacteria, heavily skewed towards organisms of
marine environments. Its gene neighborhood is not
conserved. This family has an OsmC-like N-terminal
domain. It shares a YcaO domain, frequently associated
with ATP-dependent cyclodehydration for peptide
modification. The function is unknown. Fifteen of the
first sixteen members of this family are from
selenouridine-positive genomes, but this correlation may
not be meaningful.
Length = 718
Score = 26.7 bits (59), Expect = 8.1
Identities = 9/28 (32%), Positives = 15/28 (53%)
Query: 37 LEEIVSSHKELRCPECPTFVPEYIAIYP 64
E ++ +++L P C VP Y +YP
Sbjct: 513 KEVYIAVYEDLGAPACRILVPGYSEVYP 540
>gnl|CDD|180652 PRK06667, motB, flagellar motor protein MotB; Validated.
Length = 252
Score = 26.3 bits (58), Expect = 8.2
Identities = 7/16 (43%), Positives = 10/16 (62%)
Query: 48 RCPECPTFVPEYIAIY 63
+CP+C PEY+ Y
Sbjct: 7 KCPKCIQGAPEYMLTY 22
>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 = 25.2 bits (55), Expect = 8.8
Identities = 16/40 (40%), Positives = 18/40 (45%), Gaps = 11/40 (27%)
Query: 74 ELRRGSVYTVTERCQD-GWFKGTSQRTQRSGVFPGNYVAP 112
EL+RG+ D GW G RSGVFP V P
Sbjct: 51 ELKRGT--------PDFGWKFGAIH--GRSGVFPAELVQP 80
>gnl|CDD|240420 PTZ00441, PTZ00441, sporozoite surface protein 2 (SSP2);
Provisional.
Length = 576
Score = 26.5 bits (58), Expect = 9.9
Identities = 18/56 (32%), Positives = 24/56 (42%), Gaps = 9/56 (16%)
Query: 2 DEWTLNDLLECSVCLDRLDTSSKVLPCQHTFCKKCLEEIVSSHKELRCPECPTFVP 57
DEWT CSV + T S+ P H + C +V +E CP P +P
Sbjct: 244 DEWT-----PCSVTCGK-GTHSRSRPILH---EGCTTHMVEECEEEECPVEPEPLP 290
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
0.322 0.140 0.455
Gapped
Lambda K H
0.267 0.0678 0.140
Matrix: BLOSUM62
Gap Penalties: Existence: 11, Extension: 1
Number of Sequences: 44354
Number of Hits to DB: 8,681,109
Number of extensions: 759151
Number of successful extensions: 1239
Number of sequences better than 10.0: 1
Number of HSP's gapped: 1103
Number of HSP's successfully gapped: 491
Length of query: 173
Length of database: 10,937,602
Length adjustment: 90
Effective length of query: 83
Effective length of database: 6,945,742
Effective search space: 576496586
Effective search space used: 576496586
Neighboring words threshold: 11
Window for multiple hits: 40
X1: 16 ( 7.4 bits)
X2: 38 (14.6 bits)
X3: 64 (24.7 bits)
S1: 41 (21.9 bits)
S2: 55 (25.1 bits)