RPS-BLAST 2.2.26 [Sep-21-2011]
Database: CDD.v3.10
44,354 sequences; 10,937,602 total letters
Searching..................................................done
Query= psy10857
(235 letters)
>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 = 96.2 bits (240), Expect = 3e-26
Identities = 38/53 (71%), Positives = 43/53 (81%)
Query: 58 RCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVEE 110
RC+VLFSYTP N DELEL V D I+VL EVEEGWW G+L + GVFPSNFV+E
Sbjct: 1 RCKVLFSYTPQNEDELELKVGDTIEVLGEVEEGWWEGKLNGKVGVFPSNFVKE 53
Score = 96.2 bits (240), Expect = 3e-26
Identities = 38/53 (71%), Positives = 43/53 (81%)
Query: 146 RCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVEE 198
RC+VLFSYTP N DELEL V D I+VL EVEEGWW G+L + GVFPSNFV+E
Sbjct: 1 RCKVLFSYTPQNEDELELKVGDTIEVLGEVEEGWWEGKLNGKVGVFPSNFVKE 53
>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 = 82.7 bits (204), Expect = 5e-21
Identities = 34/55 (61%), Positives = 43/55 (78%)
Query: 57 RRCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVEEI 111
R+C+VLF Y P N DELEL V D+ID+ EVEEGWW G L ++G+FPSNFV+E+
Sbjct: 1 RQCKVLFEYVPQNEDELELKVGDIIDINEEVEEGWWSGTLNGKSGLFPSNFVKEL 55
Score = 82.7 bits (204), Expect = 5e-21
Identities = 34/55 (61%), Positives = 43/55 (78%)
Query: 145 RRCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVEEI 199
R+C+VLF Y P N DELEL V D+ID+ EVEEGWW G L ++G+FPSNFV+E+
Sbjct: 1 RQCKVLFEYVPQNEDELELKVGDIIDINEEVEEGWWSGTLNGKSGLFPSNFVKEL 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 = 79.3 bits (195), Expect = 8e-20
Identities = 34/53 (64%), Positives = 42/53 (79%)
Query: 58 RCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVEE 110
RC+V FSY P N DELEL V D+I+V+ EVEEGWW G L +TG+FPSNF++E
Sbjct: 1 RCQVAFSYLPQNEDELELKVGDIIEVVGEVEEGWWEGVLNGKTGMFPSNFIKE 53
Score = 79.3 bits (195), Expect = 8e-20
Identities = 34/53 (64%), Positives = 42/53 (79%)
Query: 146 RCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVEE 198
RC+V FSY P N DELEL V D+I+V+ EVEEGWW G L +TG+FPSNF++E
Sbjct: 1 RCQVAFSYLPQNEDELELKVGDIIEVVGEVEEGWWEGVLNGKTGMFPSNFIKE 53
Score = 36.1 bits (83), Expect = 8e-04
Identities = 17/36 (47%), Positives = 21/36 (58%)
Query: 9 VEFDYTAQEADELTLRKGDLITGIRVQSGGWWEGLL 44
V F Y Q DEL L+ GD+I + GWWEG+L
Sbjct: 4 VAFSYLPQNEDELELKVGDIIEVVGEVEEGWWEGVL 39
>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 = 76.4 bits (189), Expect = 1e-18
Identities = 25/56 (44%), Positives = 36/56 (64%), Gaps = 1/56 (1%)
Query: 55 PGRRCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRD-RTGVFPSNFVE 109
G + R L+ YT + DEL D+I VL + ++GWW+GRL + G+FPSN+VE
Sbjct: 1 EGPQVRALYDYTAQDPDELSFKKGDIITVLEKSDDGWWKGRLGRGKEGLFPSNYVE 56
Score = 76.4 bits (189), Expect = 1e-18
Identities = 25/56 (44%), Positives = 36/56 (64%), Gaps = 1/56 (1%)
Query: 143 PGRRCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRD-RTGVFPSNFVE 197
G + R L+ YT + DEL D+I VL + ++GWW+GRL + G+FPSN+VE
Sbjct: 1 EGPQVRALYDYTAQDPDELSFKKGDIITVLEKSDDGWWKGRLGRGKEGLFPSNYVE 56
Score = 53.7 bits (130), Expect = 4e-10
Identities = 19/39 (48%), Positives = 28/39 (71%)
Query: 11 FDYTAQEADELTLRKGDLITGIRVQSGGWWEGLLVRERQ 49
+DYTAQ+ DEL+ +KGD+IT + GWW+G L R ++
Sbjct: 9 YDYTAQDPDELSFKKGDIITVLEKSDDGWWKGRLGRGKE 47
>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 = 75.1 bits (185), Expect = 4e-18
Identities = 23/53 (43%), Positives = 36/53 (67%)
Query: 58 RCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVEE 110
+C+ L++Y + DEL + D+I++L E GWW GRLR + G+FP N+VE+
Sbjct: 1 QCKALYAYDAQDTDELSFNEGDIIEILKEDPSGWWTGRLRGKEGLFPGNYVEK 53
Score = 75.1 bits (185), Expect = 4e-18
Identities = 23/53 (43%), Positives = 36/53 (67%)
Query: 146 RCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVEE 198
+C+ L++Y + DEL + D+I++L E GWW GRLR + G+FP N+VE+
Sbjct: 1 QCKALYAYDAQDTDELSFNEGDIIEILKEDPSGWWTGRLRGKEGLFPGNYVEK 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 = 74.0 bits (183), Expect = 7e-18
Identities = 20/51 (39%), Positives = 29/51 (56%), Gaps = 1/51 (1%)
Query: 58 RCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRD-RTGVFPSNF 107
R L+ Y + DEL D+I VL + ++GWW G L R G+FP+N+
Sbjct: 1 YARALYDYEAQDDDELSFKKGDIITVLEKDDDGWWEGELNGGREGLFPANY 51
Score = 74.0 bits (183), Expect = 7e-18
Identities = 20/51 (39%), Positives = 29/51 (56%), Gaps = 1/51 (1%)
Query: 146 RCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRD-RTGVFPSNF 195
R L+ Y + DEL D+I VL + ++GWW G L R G+FP+N+
Sbjct: 1 YARALYDYEAQDDDELSFKKGDIITVLEKDDDGWWEGELNGGREGLFPANY 51
Score = 52.1 bits (126), Expect = 1e-09
Identities = 19/39 (48%), Positives = 26/39 (66%)
Query: 11 FDYTAQEADELTLRKGDLITGIRVQSGGWWEGLLVRERQ 49
+DY AQ+ DEL+ +KGD+IT + GWWEG L R+
Sbjct: 6 YDYEAQDDDELSFKKGDIITVLEKDDDGWWEGELNGGRE 44
>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 = 71.6 bits (176), Expect = 6e-17
Identities = 27/55 (49%), Positives = 34/55 (61%), Gaps = 2/55 (3%)
Query: 58 RCRVLFSYTPANADELELHVNDVIDVLSEVEE--GWWRGRLRDRTGVFPSNFVEE 110
+ RVLF Y N DEL L D++ +LS+ E GWW+G L + GVFP NFVE
Sbjct: 1 KARVLFDYEAENEDELTLREGDIVTILSKDCEDKGWWKGELNGKRGVFPDNFVEP 55
Score = 71.6 bits (176), Expect = 6e-17
Identities = 27/55 (49%), Positives = 34/55 (61%), Gaps = 2/55 (3%)
Query: 146 RCRVLFSYTPANADELELHVNDVIDVLSEVEE--GWWRGRLRDRTGVFPSNFVEE 198
+ RVLF Y N DEL L D++ +LS+ E GWW+G L + GVFP NFVE
Sbjct: 1 KARVLFDYEAENEDELTLREGDIVTILSKDCEDKGWWKGELNGKRGVFPDNFVEP 55
>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 = 67.9 bits (166), Expect = 2e-15
Identities = 29/53 (54%), Positives = 33/53 (62%), Gaps = 2/53 (3%)
Query: 59 CRVLFSYTPANADELELHVNDVIDVLSEV--EEGWWRGRLRDRTGVFPSNFVE 109
CRVLF Y P DEL L DVI+V+S+ +EGWW G L R G FP NFV
Sbjct: 2 CRVLFDYNPVAPDELALKKGDVIEVISKETEDEGWWEGELNGRRGFFPDNFVM 54
Score = 67.9 bits (166), Expect = 2e-15
Identities = 29/53 (54%), Positives = 33/53 (62%), Gaps = 2/53 (3%)
Query: 147 CRVLFSYTPANADELELHVNDVIDVLSEV--EEGWWRGRLRDRTGVFPSNFVE 197
CRVLF Y P DEL L DVI+V+S+ +EGWW G L R G FP NFV
Sbjct: 2 CRVLFDYNPVAPDELALKKGDVIEVISKETEDEGWWEGELNGRRGFFPDNFVM 54
>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 = 66.6 bits (163), Expect = 5e-15
Identities = 24/53 (45%), Positives = 35/53 (66%)
Query: 58 RCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVEE 110
RC+ L+SYT DEL L D+I+V + ++GWW G L + G+FP+ +VEE
Sbjct: 1 RCKALYSYTANREDELSLQPGDIIEVHEKQDDGWWLGELNGKKGIFPATYVEE 53
Score = 66.6 bits (163), Expect = 5e-15
Identities = 24/53 (45%), Positives = 35/53 (66%)
Query: 146 RCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVEE 198
RC+ L+SYT DEL L D+I+V + ++GWW G L + G+FP+ +VEE
Sbjct: 1 RCKALYSYTANREDELSLQPGDIIEVHEKQDDGWWLGELNGKKGIFPATYVEE 53
>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 = 64.2 bits (157), Expect = 4e-14
Identities = 23/50 (46%), Positives = 30/50 (60%)
Query: 61 VLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVEE 110
V F Y DEL L V D+I + ++EEGWW G L + G+FP NFV+
Sbjct: 4 VEFDYDAEEPDELTLKVGDIITNVKKMEEGWWEGTLNGKRGMFPDNFVKV 53
Score = 64.2 bits (157), Expect = 4e-14
Identities = 23/50 (46%), Positives = 30/50 (60%)
Query: 149 VLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVEE 198
V F Y DEL L V D+I + ++EEGWW G L + G+FP NFV+
Sbjct: 4 VEFDYDAEEPDELTLKVGDIITNVKKMEEGWWEGTLNGKRGMFPDNFVKV 53
Score = 63.4 bits (155), Expect = 1e-13
Identities = 23/39 (58%), Positives = 28/39 (71%)
Query: 6 EASVEFDYTAQEADELTLRKGDLITGIRVQSGGWWEGLL 44
E VEFDY A+E DELTL+ GD+IT ++ GWWEG L
Sbjct: 1 EVIVEFDYDAEEPDELTLKVGDIITNVKKMEEGWWEGTL 39
>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 = 62.3 bits (152), Expect = 3e-13
Identities = 22/53 (41%), Positives = 28/53 (52%)
Query: 58 RCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVEE 110
V F+Y DEL L D + VL + +GWWRG + G FPSN+V E
Sbjct: 1 PAVVKFNYEAQREDELSLRKGDRVLVLEKSSDGWWRGECNGQVGWFPSNYVTE 53
Score = 62.3 bits (152), Expect = 3e-13
Identities = 22/53 (41%), Positives = 28/53 (52%)
Query: 146 RCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVEE 198
V F+Y DEL L D + VL + +GWWRG + G FPSN+V E
Sbjct: 1 PAVVKFNYEAQREDELSLRKGDRVLVLEKSSDGWWRGECNGQVGWFPSNYVTE 53
>gnl|CDD|212774 cd11840, SH3_Intersectin_5, Fifth Src homology 3 domain (or SH3E)
of Intersectin. Intersectins (ITSNs) are adaptor
proteins that function in exo- and endocytosis, actin
cytoskeletal reorganization, and signal transduction.
They are essential for initiating clathrin-coated pit
formation. They bind to many proteins through their
multidomain structure and facilitate the assembly of
multimeric complexes. Vertebrates contain two ITSN
proteins, ITSN1 and ITSN2, which exist in alternatively
spliced short and long isoforms. The short isoforms
contain two Eps15 homology domains (EH1 and EH2), a
coiled-coil region and five SH3 domains (SH3A-E), while
the long isoforms, in addition, contain RhoGEF (also
called Dbl-homologous or DH), Pleckstrin homology (PH)
and C2 domains. ITSN1 and ITSN2 are both widely
expressed, with variations depending on tissue type and
stage of development. The fifth SH3 domain (or SH3E) of
ITSN1 has been shown to bind many protein partners
including SGIP1, Sos1, dynamin1/2, CIN85, c-Cbl, SHIP2,
N-WASP, and synaptojanin-1, among others. SH3 domains
are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 53
Score = 61.7 bits (150), Expect = 4e-13
Identities = 26/49 (53%), Positives = 33/49 (67%)
Query: 62 LFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVEE 110
LF YT N DEL D+I+VLS+ + WWRG L +TG+FPSN+VE
Sbjct: 5 LFPYTAQNEDELSFQKGDIINVLSKDDPDWWRGELNGQTGLFPSNYVEP 53
Score = 61.7 bits (150), Expect = 4e-13
Identities = 26/49 (53%), Positives = 33/49 (67%)
Query: 150 LFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVEE 198
LF YT N DEL D+I+VLS+ + WWRG L +TG+FPSN+VE
Sbjct: 5 LFPYTAQNEDELSFQKGDIINVLSKDDPDWWRGELNGQTGLFPSNYVEP 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 = 60.8 bits (148), Expect = 8e-13
Identities = 24/51 (47%), Positives = 30/51 (58%)
Query: 60 RVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVEE 110
R F++ N DEL D+I V VE GWW G L +TG FPSN+V+E
Sbjct: 3 RAKFNFEGTNEDELSFDKGDIITVTQVVEGGWWEGTLNGKTGWFPSNYVKE 53
Score = 60.8 bits (148), Expect = 8e-13
Identities = 24/51 (47%), Positives = 30/51 (58%)
Query: 148 RVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVEE 198
R F++ N DEL D+I V VE GWW G L +TG FPSN+V+E
Sbjct: 3 RAKFNFEGTNEDELSFDKGDIITVTQVVEGGWWEGTLNGKTGWFPSNYVKE 53
Score = 51.9 bits (125), Expect = 2e-09
Identities = 17/36 (47%), Positives = 23/36 (63%)
Query: 9 VEFDYTAQEADELTLRKGDLITGIRVQSGGWWEGLL 44
+F++ DEL+ KGD+IT +V GGWWEG L
Sbjct: 4 AKFNFEGTNEDELSFDKGDIITVTQVVEGGWWEGTL 39
>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 = 60.6 bits (148), Expect = 9e-13
Identities = 22/53 (41%), Positives = 31/53 (58%)
Query: 58 RCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVEE 110
RV+F Y + +EL L DV+ VL + + GWW G R G+ PS++VEE
Sbjct: 1 YGRVIFDYVATDPNELSLKKGDVVKVLDKDDNGWWEGERGGRRGLVPSSYVEE 53
Score = 60.6 bits (148), Expect = 9e-13
Identities = 22/53 (41%), Positives = 31/53 (58%)
Query: 146 RCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVEE 198
RV+F Y + +EL L DV+ VL + + GWW G R G+ PS++VEE
Sbjct: 1 YGRVIFDYVATDPNELSLKKGDVVKVLDKDDNGWWEGERGGRRGLVPSSYVEE 53
Score = 40.1 bits (95), Expect = 3e-05
Identities = 16/34 (47%), Positives = 23/34 (67%)
Query: 9 VEFDYTAQEADELTLRKGDLITGIRVQSGGWWEG 42
V FDY A + +EL+L+KGD++ + GWWEG
Sbjct: 4 VIFDYVATDPNELSLKKGDVVKVLDKDDNGWWEG 37
>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 = 60.4 bits (147), Expect = 1e-12
Identities = 27/59 (45%), Positives = 35/59 (59%), Gaps = 7/59 (11%)
Query: 59 CRVLFSYTPANAD-ELELHVNDVIDVLS-----EVEEGWWRGRLRD-RTGVFPSNFVEE 110
CR L+ +TP N + EL L D++ VLS + WW+GR RD R G FPSN+VE
Sbjct: 2 CRALYDFTPENPEMELSLKKGDIVAVLSKTDPLGRDSEWWKGRTRDGRIGWFPSNYVEV 60
Score = 60.4 bits (147), Expect = 1e-12
Identities = 27/59 (45%), Positives = 35/59 (59%), Gaps = 7/59 (11%)
Query: 147 CRVLFSYTPANAD-ELELHVNDVIDVLS-----EVEEGWWRGRLRD-RTGVFPSNFVEE 198
CR L+ +TP N + EL L D++ VLS + WW+GR RD R G FPSN+VE
Sbjct: 2 CRALYDFTPENPEMELSLKKGDIVAVLSKTDPLGRDSEWWKGRTRDGRIGWFPSNYVEV 60
>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 = 58.0 bits (141), Expect = 9e-12
Identities = 21/53 (39%), Positives = 31/53 (58%)
Query: 58 RCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVEE 110
R + L+ + P ELE D+I VL + WW+G LR R G+FP+N+V+
Sbjct: 1 RVQALYDFNPQEPGELEFRRGDIITVLDSSDPDWWKGELRGRVGIFPANYVQP 53
Score = 58.0 bits (141), Expect = 9e-12
Identities = 21/53 (39%), Positives = 31/53 (58%)
Query: 146 RCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVEE 198
R + L+ + P ELE D+I VL + WW+G LR R G+FP+N+V+
Sbjct: 1 RVQALYDFNPQEPGELEFRRGDIITVLDSSDPDWWKGELRGRVGIFPANYVQP 53
>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 = 58.0 bits (140), Expect = 1e-11
Identities = 24/53 (45%), Positives = 34/53 (64%), Gaps = 2/53 (3%)
Query: 59 CRVLFSYTPANADELELHVNDVIDVLSE--VEEGWWRGRLRDRTGVFPSNFVE 109
C+VLF Y N DEL + D++ ++S+ ++ GWW G L R GVFP NFV+
Sbjct: 2 CKVLFPYEAQNEDELTIKEGDIVTLISKDCIDAGWWEGELNGRRGVFPDNFVK 54
Score = 58.0 bits (140), Expect = 1e-11
Identities = 24/53 (45%), Positives = 34/53 (64%), Gaps = 2/53 (3%)
Query: 147 CRVLFSYTPANADELELHVNDVIDVLSE--VEEGWWRGRLRDRTGVFPSNFVE 197
C+VLF Y N DEL + D++ ++S+ ++ GWW G L R GVFP NFV+
Sbjct: 2 CKVLFPYEAQNEDELTIKEGDIVTLISKDCIDAGWWEGELNGRRGVFPDNFVK 54
>gnl|CDD|212753 cd11819, SH3_Cortactin_like, Src homology 3 domain of Cortactin and
related proteins. This subfamily includes cortactin,
Abp1 (actin-binding protein 1), hematopoietic lineage
cell-specific protein 1 (HS1), and similar proteins.
These proteins are involved in regulating actin dynamics
through direct or indirect interaction with the Arp2/3
complex, which is required to initiate actin
polymerization. They all contain at least one C-terminal
SH3 domain. Cortactin and HS1 bind Arp2/3 and actin
through an N-terminal region that contains an acidic
domain and several copies of a repeat domain found in
cortactin and HS1. Abp1 binds actin via an N-terminal
actin-depolymerizing factor (ADF) homology domain. Yeast
Abp1 binds Arp2/3 directly through two acidic domains.
Mammalian Abp1 does not directly interact with Arp2/3;
instead, it regulates actin dynamics indirectly by
interacting with dynamin and WASP family proteins. The
C-terminal region of these proteins acts as an adaptor
or scaffold that can connect membrane trafficking and
signaling proteins that bind the SH3 domain within the
actin network. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP motifs.
They play versatile and diverse roles in the cell
including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 54
Score = 57.3 bits (139), Expect = 1e-11
Identities = 18/53 (33%), Positives = 31/53 (58%), Gaps = 1/53 (1%)
Query: 58 RCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRD-RTGVFPSNFVE 109
R + L+ Y A +E+ D+I + +++EGWW G + G+FP+N+VE
Sbjct: 1 RAKALYDYQAAEDNEISFVEGDIITQIEQIDEGWWLGVNAKGQKGLFPANYVE 53
Score = 57.3 bits (139), Expect = 1e-11
Identities = 18/53 (33%), Positives = 31/53 (58%), Gaps = 1/53 (1%)
Query: 146 RCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRD-RTGVFPSNFVE 197
R + L+ Y A +E+ D+I + +++EGWW G + G+FP+N+VE
Sbjct: 1 RAKALYDYQAAEDNEISFVEGDIITQIEQIDEGWWLGVNAKGQKGLFPANYVE 53
Score = 44.2 bits (105), Expect = 1e-06
Identities = 15/36 (41%), Positives = 21/36 (58%)
Query: 7 ASVEFDYTAQEADELTLRKGDLITGIRVQSGGWWEG 42
A +DY A E +E++ +GD+IT I GWW G
Sbjct: 2 AKALYDYQAAEDNEISFVEGDIITQIEQIDEGWWLG 37
>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 = 57.3 bits (139), Expect = 1e-11
Identities = 25/56 (44%), Positives = 34/56 (60%), Gaps = 4/56 (7%)
Query: 58 RCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRT---GVFPSNFVEE 110
R R L+SYTP N DELEL D++ V+ + ++GW+ G RT G FP N+V
Sbjct: 1 RYRALYSYTPQNEDELELREGDIVYVMEKCDDGWFVGTSE-RTGLFGTFPGNYVAR 55
Score = 57.3 bits (139), Expect = 1e-11
Identities = 25/56 (44%), Positives = 34/56 (60%), Gaps = 4/56 (7%)
Query: 146 RCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRT---GVFPSNFVEE 198
R R L+SYTP N DELEL D++ V+ + ++GW+ G RT G FP N+V
Sbjct: 1 RYRALYSYTPQNEDELELREGDIVYVMEKCDDGWFVGTSE-RTGLFGTFPGNYVAR 55
Score = 28.0 bits (63), Expect = 0.60
Identities = 13/32 (40%), Positives = 19/32 (59%)
Query: 11 FDYTAQEADELTLRKGDLITGIRVQSGGWWEG 42
+ YT Q DEL LR+GD++ + GW+ G
Sbjct: 6 YSYTPQNEDELELREGDIVYVMEKCDDGWFVG 37
>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 = 57.3 bits (139), Expect = 2e-11
Identities = 17/51 (33%), Positives = 28/51 (54%)
Query: 60 RVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVEE 110
R L+ Y + DEL D++ + + + WW+ +TG+ PSN+VEE
Sbjct: 3 RALYDYEAQHPDELSFEEGDLLYISDKSDPNWWKATCGGKTGLIPSNYVEE 53
Score = 57.3 bits (139), Expect = 2e-11
Identities = 17/51 (33%), Positives = 28/51 (54%)
Query: 148 RVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVEE 198
R L+ Y + DEL D++ + + + WW+ +TG+ PSN+VEE
Sbjct: 3 RALYDYEAQHPDELSFEEGDLLYISDKSDPNWWKATCGGKTGLIPSNYVEE 53
>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 = 56.8 bits (137), Expect = 3e-11
Identities = 23/52 (44%), Positives = 32/52 (61%), Gaps = 2/52 (3%)
Query: 59 CRVLFSYTPANADELELHVNDVIDVLSEV--EEGWWRGRLRDRTGVFPSNFV 108
C+ LF Y N DEL+ ++I ++S+ E GWW+G L + GVFP NFV
Sbjct: 4 CKALFHYEGTNEDELDFKEGEIILIISKDTGEPGWWKGELNGKEGVFPDNFV 55
Score = 56.8 bits (137), Expect = 3e-11
Identities = 23/52 (44%), Positives = 32/52 (61%), Gaps = 2/52 (3%)
Query: 147 CRVLFSYTPANADELELHVNDVIDVLSEV--EEGWWRGRLRDRTGVFPSNFV 196
C+ LF Y N DEL+ ++I ++S+ E GWW+G L + GVFP NFV
Sbjct: 4 CKALFHYEGTNEDELDFKEGEIILIISKDTGEPGWWKGELNGKEGVFPDNFV 55
>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 = 56.4 bits (137), Expect = 3e-11
Identities = 19/47 (40%), Positives = 28/47 (59%), Gaps = 1/47 (2%)
Query: 60 RVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRD-RTGVFPS 105
L+ YT DEL D+I VL + ++GWW+GRL+ + G+ PS
Sbjct: 1 VALYDYTAREPDELSFKKGDIIIVLEKSDDGWWKGRLKGGKEGLIPS 47
Score = 56.4 bits (137), Expect = 3e-11
Identities = 19/47 (40%), Positives = 28/47 (59%), Gaps = 1/47 (2%)
Query: 148 RVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRD-RTGVFPS 193
L+ YT DEL D+I VL + ++GWW+GRL+ + G+ PS
Sbjct: 1 VALYDYTAREPDELSFKKGDIIIVLEKSDDGWWKGRLKGGKEGLIPS 47
Score = 47.2 bits (113), Expect = 8e-08
Identities = 17/39 (43%), Positives = 26/39 (66%)
Query: 11 FDYTAQEADELTLRKGDLITGIRVQSGGWWEGLLVRERQ 49
+DYTA+E DEL+ +KGD+I + GWW+G L ++
Sbjct: 4 YDYTAREPDELSFKKGDIIIVLEKSDDGWWKGRLKGGKE 42
>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 = 56.4 bits (136), Expect = 4e-11
Identities = 25/43 (58%), Positives = 29/43 (67%)
Query: 6 EASVEFDYTAQEADELTLRKGDLITGIRVQSGGWWEGLLVRER 48
EA VEFDY AQ DELT+ GD+IT I+ GGWWEG + R
Sbjct: 1 EAIVEFDYKAQHEDELTITVGDIITKIKKDDGGWWEGEIKGRR 43
Score = 48.7 bits (116), Expect = 3e-08
Identities = 21/50 (42%), Positives = 30/50 (60%)
Query: 149 VLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVEE 198
V F Y + DEL + V D+I + + + GWW G ++ R G+FP NFV E
Sbjct: 4 VEFDYKAQHEDELTITVGDIITKIKKDDGGWWEGEIKGRRGLFPDNFVRE 53
>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 = 56.3 bits (136), Expect = 4e-11
Identities = 20/48 (41%), Positives = 32/48 (66%)
Query: 62 LFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVE 109
L+ Y A+ DE+ +D+I + ++EGWWRG R + G+FP+N+VE
Sbjct: 5 LYDYQAADDDEISFDPDDIITNIEMIDEGWWRGVCRGKYGLFPANYVE 52
Score = 56.3 bits (136), Expect = 4e-11
Identities = 20/48 (41%), Positives = 32/48 (66%)
Query: 150 LFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVE 197
L+ Y A+ DE+ +D+I + ++EGWWRG R + G+FP+N+VE
Sbjct: 5 LYDYQAADDDEISFDPDDIITNIEMIDEGWWRGVCRGKYGLFPANYVE 52
>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 = 55.6 bits (134), Expect = 8e-11
Identities = 23/49 (46%), Positives = 32/49 (65%)
Query: 62 LFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVEE 110
LFSY + ++LE DVI VLS+V E W G+ + + G+FPS FVE+
Sbjct: 5 LFSYEASQPEDLEFQKGDVILVLSKVNEDWLEGQCKGKIGIFPSAFVED 53
Score = 55.6 bits (134), Expect = 8e-11
Identities = 23/49 (46%), Positives = 32/49 (65%)
Query: 150 LFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVEE 198
LFSY + ++LE DVI VLS+V E W G+ + + G+FPS FVE+
Sbjct: 5 LFSYEASQPEDLEFQKGDVILVLSKVNEDWLEGQCKGKIGIFPSAFVED 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 = 54.3 bits (131), Expect = 2e-10
Identities = 23/52 (44%), Positives = 33/52 (63%), Gaps = 2/52 (3%)
Query: 61 VLFSYTPANADELELHVNDVIDVLSEVEEGWWRG-RLRD-RTGVFPSNFVEE 110
+ +YT DEL L DV++VL ++ +GW+ G RLRD G FPS++ EE
Sbjct: 4 CVHAYTAQQPDELTLEEGDVVNVLRKMPDGWYEGERLRDGERGWFPSSYTEE 55
Score = 54.3 bits (131), Expect = 2e-10
Identities = 23/52 (44%), Positives = 33/52 (63%), Gaps = 2/52 (3%)
Query: 149 VLFSYTPANADELELHVNDVIDVLSEVEEGWWRG-RLRD-RTGVFPSNFVEE 198
+ +YT DEL L DV++VL ++ +GW+ G RLRD G FPS++ EE
Sbjct: 4 CVHAYTAQQPDELTLEEGDVVNVLRKMPDGWYEGERLRDGERGWFPSSYTEE 55
Score = 38.1 bits (89), Expect = 2e-04
Identities = 16/31 (51%), Positives = 22/31 (70%)
Query: 12 DYTAQEADELTLRKGDLITGIRVQSGGWWEG 42
YTAQ+ DELTL +GD++ +R GW+EG
Sbjct: 7 AYTAQQPDELTLEEGDVVNVLRKMPDGWYEG 37
>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 = 54.2 bits (131), Expect = 3e-10
Identities = 18/53 (33%), Positives = 32/53 (60%)
Query: 59 CRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVEEI 111
CR L+ + P N EL D+I + ++++E W+ G + ++G FP N+VE +
Sbjct: 3 CRALYDFEPENEGELGFKEGDIITLTNQIDENWYEGMVNGQSGFFPVNYVEVL 55
Score = 54.2 bits (131), Expect = 3e-10
Identities = 18/53 (33%), Positives = 32/53 (60%)
Query: 147 CRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVEEI 199
CR L+ + P N EL D+I + ++++E W+ G + ++G FP N+VE +
Sbjct: 3 CRALYDFEPENEGELGFKEGDIITLTNQIDENWYEGMVNGQSGFFPVNYVEVL 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 = 53.9 bits (130), Expect = 3e-10
Identities = 18/49 (36%), Positives = 29/49 (59%), Gaps = 2/49 (4%)
Query: 62 LFSYTPANADELELHVNDVIDVLSEVEEGWWRGR--LRDRTGVFPSNFV 108
L+ Y P DELEL ++ V + ++GW++G ++GVFP N+V
Sbjct: 5 LYPYKPQKPDELELRKGEMYTVTEKCQDGWFKGTSLRTGQSGVFPGNYV 53
Score = 53.9 bits (130), Expect = 3e-10
Identities = 18/49 (36%), Positives = 29/49 (59%), Gaps = 2/49 (4%)
Query: 150 LFSYTPANADELELHVNDVIDVLSEVEEGWWRGR--LRDRTGVFPSNFV 196
L+ Y P DELEL ++ V + ++GW++G ++GVFP N+V
Sbjct: 5 LYPYKPQKPDELELRKGEMYTVTEKCQDGWFKGTSLRTGQSGVFPGNYV 53
Score = 37.4 bits (87), Expect = 3e-04
Identities = 15/39 (38%), Positives = 22/39 (56%)
Query: 11 FDYTAQEADELTLRKGDLITGIRVQSGGWWEGLLVRERQ 49
+ Y Q+ DEL LRKG++ T GW++G +R Q
Sbjct: 6 YPYKPQKPDELELRKGEMYTVTEKCQDGWFKGTSLRTGQ 44
>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 = 54.0 bits (130), Expect = 3e-10
Identities = 23/52 (44%), Positives = 33/52 (63%), Gaps = 5/52 (9%)
Query: 62 LFSYTPANADELELHVNDVIDVLSEV-----EEGWWRGRLRDRTGVFPSNFV 108
+F Y + DEL L D ++VLS+ +EGWW G++ DR G+FPSN+V
Sbjct: 5 VFDYEASAEDELTLRRGDRVEVLSKDSAVSGDEGWWTGKINDRVGIFPSNYV 56
Score = 54.0 bits (130), Expect = 3e-10
Identities = 23/52 (44%), Positives = 33/52 (63%), Gaps = 5/52 (9%)
Query: 150 LFSYTPANADELELHVNDVIDVLSEV-----EEGWWRGRLRDRTGVFPSNFV 196
+F Y + DEL L D ++VLS+ +EGWW G++ DR G+FPSN+V
Sbjct: 5 VFDYEASAEDELTLRRGDRVEVLSKDSAVSGDEGWWTGKINDRVGIFPSNYV 56
>gnl|CDD|212918 cd11985, SH3_Stac2_C, C-terminal Src homology 3 domain of SH3 and
cysteine-rich domain-containing protein 2 (Stac2). Stac
proteins are putative adaptor proteins that contain a
cysteine-rich C1 domain and one or two SH3 domains at
the C-terminus. There are three mammalian members
(Stac1, Stac2, and Stac3) of this family. Stac2 contains
a single SH3 domain at the C-terminus unlike Stac1 and
Stac3, which contain two C-terminal SH3 domains. Stac1
and Stac2 have been found to be expressed differently in
mature dorsal root ganglia (DRG) neurons. Stac1 is
mainly expressed in peptidergic neurons while Stac2 is
found in a subset of nonpeptidergic and all trkB+
neurons. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate affinity
and selectivity, preferentially to PxxP motifs. They
play versatile and diverse roles in the cell including
the regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 53
Score = 53.8 bits (129), Expect = 4e-10
Identities = 18/48 (37%), Positives = 29/48 (60%)
Query: 62 LFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVE 109
L+ + P ++L L D + V+ + E WW+G+ DR G FP+NFV+
Sbjct: 5 LYKFLPQENNDLPLQPGDRVMVVDDSNEDWWKGKSGDRVGFFPANFVQ 52
Score = 53.8 bits (129), Expect = 4e-10
Identities = 18/48 (37%), Positives = 29/48 (60%)
Query: 150 LFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVE 197
L+ + P ++L L D + V+ + E WW+G+ DR G FP+NFV+
Sbjct: 5 LYKFLPQENNDLPLQPGDRVMVVDDSNEDWWKGKSGDRVGFFPANFVQ 52
>gnl|CDD|212760 cd11826, SH3_Abi, Src homology 3 domain of Abl Interactor proteins.
Abl interactor (Abi) proteins are adaptor proteins
serving as binding partners and substrates of Abl
tyrosine kinases. They are involved in regulating actin
cytoskeletal reorganization and play important roles in
membrane-ruffling, endocytosis, cell motility, and cell
migration. They localize to sites of actin
polymerization in epithelial adherens junction and
immune synapses, as well as to the leading edge of
lamellipodia. Vertebrates contain two Abi proteins, Abi1
and Abi2. Abi1 displays a wide expression pattern while
Abi2 is highly expressed in the eye and brain. Abi
proteins contain a homeobox homology domain, a
proline-rich region, and a SH3 domain. The SH3 domain of
Abi binds to a PxxP motif in Abl. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 52
Score = 53.5 bits (129), Expect = 4e-10
Identities = 20/50 (40%), Positives = 28/50 (56%)
Query: 60 RVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVE 109
L+ YT DEL D+I V + ++GW+ G L TG+FP N+VE
Sbjct: 3 VALYDYTADKDDELSFQEGDIIYVTKKNDDGWYEGVLNGVTGLFPGNYVE 52
Score = 53.5 bits (129), Expect = 4e-10
Identities = 20/50 (40%), Positives = 28/50 (56%)
Query: 148 RVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVE 197
L+ YT DEL D+I V + ++GW+ G L TG+FP N+VE
Sbjct: 3 VALYDYTADKDDELSFQEGDIIYVTKKNDDGWYEGVLNGVTGLFPGNYVE 52
Score = 42.7 bits (101), Expect = 3e-06
Identities = 15/34 (44%), Positives = 24/34 (70%)
Query: 11 FDYTAQEADELTLRKGDLITGIRVQSGGWWEGLL 44
+DYTA + DEL+ ++GD+I + GW+EG+L
Sbjct: 6 YDYTADKDDELSFQEGDIIYVTKKNDDGWYEGVL 39
>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 = 53.1 bits (128), Expect = 6e-10
Identities = 20/54 (37%), Positives = 30/54 (55%), Gaps = 2/54 (3%)
Query: 58 RCRVLFSYTPANADELELHVNDVIDVLSE--VEEGWWRGRLRDRTGVFPSNFVE 109
+ R L+++ N DE+ D+I V E GW G L+ +TG FP+N+VE
Sbjct: 1 KYRALYAFEARNPDEISFQPGDIIQVDESQVAEPGWLAGELKGKTGWFPANYVE 54
Score = 53.1 bits (128), Expect = 6e-10
Identities = 20/54 (37%), Positives = 30/54 (55%), Gaps = 2/54 (3%)
Query: 146 RCRVLFSYTPANADELELHVNDVIDVLSE--VEEGWWRGRLRDRTGVFPSNFVE 197
+ R L+++ N DE+ D+I V E GW G L+ +TG FP+N+VE
Sbjct: 1 KYRALYAFEARNPDEISFQPGDIIQVDESQVAEPGWLAGELKGKTGWFPANYVE 54
>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 = 52.9 bits (127), Expect = 6e-10
Identities = 22/49 (44%), Positives = 30/49 (61%)
Query: 60 RVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFV 108
R +F + P+ ++EL L DVI+VL V+E W G TG FPS+FV
Sbjct: 3 RAIFDFCPSVSEELPLFAGDVIEVLKVVDEFWLLGTKEGVTGQFPSSFV 51
Score = 52.9 bits (127), Expect = 6e-10
Identities = 22/49 (44%), Positives = 30/49 (61%)
Query: 148 RVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFV 196
R +F + P+ ++EL L DVI+VL V+E W G TG FPS+FV
Sbjct: 3 RAIFDFCPSVSEELPLFAGDVIEVLKVVDEFWLLGTKEGVTGQFPSSFV 51
>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 = 53.1 bits (127), Expect = 6e-10
Identities = 24/53 (45%), Positives = 35/53 (66%), Gaps = 4/53 (7%)
Query: 60 RVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRT---GVFPSNFVE 109
+ L+SY P N DELEL D++DV+ + ++GW+ G R RT G FP N+V+
Sbjct: 5 QALYSYAPQNDDELELRDGDIVDVMEKCDDGWFVGTSR-RTKQFGTFPGNYVK 56
Score = 53.1 bits (127), Expect = 6e-10
Identities = 24/53 (45%), Positives = 35/53 (66%), Gaps = 4/53 (7%)
Query: 148 RVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRT---GVFPSNFVE 197
+ L+SY P N DELEL D++DV+ + ++GW+ G R RT G FP N+V+
Sbjct: 5 QALYSYAPQNDDELELRDGDIVDVMEKCDDGWFVGTSR-RTKQFGTFPGNYVK 56
Score = 34.6 bits (79), Expect = 0.003
Identities = 18/53 (33%), Positives = 27/53 (50%), Gaps = 1/53 (1%)
Query: 11 FDYTAQEADELTLRKGDLITGIRVQSGGWWEGLLVRERQAVTEQPGRRCRVLF 63
+ Y Q DEL LR GD++ + GW+ G R +Q T PG ++L+
Sbjct: 8 YSYAPQNDDELELRDGDIVDVMEKCDDGWFVGTSRRTKQFGT-FPGNYVKLLY 59
>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 = 52.1 bits (125), Expect = 2e-09
Identities = 22/57 (38%), Positives = 31/57 (54%), Gaps = 5/57 (8%)
Query: 59 CRVLFSYTPANADELELHVNDVIDVLSE-----VEEGWWRGRLRDRTGVFPSNFVEE 110
LF Y DEL L ++VLS+ +EGWW G++ D+ G+FPSN+V
Sbjct: 2 WTALFDYDARGEDELTLRRGQPVEVLSKDAAVSGDEGWWTGKIGDKVGIFPSNYVAP 58
Score = 52.1 bits (125), Expect = 2e-09
Identities = 22/57 (38%), Positives = 31/57 (54%), Gaps = 5/57 (8%)
Query: 147 CRVLFSYTPANADELELHVNDVIDVLSE-----VEEGWWRGRLRDRTGVFPSNFVEE 198
LF Y DEL L ++VLS+ +EGWW G++ D+ G+FPSN+V
Sbjct: 2 WTALFDYDARGEDELTLRRGQPVEVLSKDAAVSGDEGWWTGKIGDKVGIFPSNYVAP 58
>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 = 51.7 bits (124), Expect = 2e-09
Identities = 23/54 (42%), Positives = 35/54 (64%), Gaps = 2/54 (3%)
Query: 58 RCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLR--DRTGVFPSNFVE 109
R RV+ Y P + ELEL D++ V + E+GW++G L+ +TG+FP +FVE
Sbjct: 1 RYRVIVPYPPQSEAELELKEGDIVFVHKKREDGWFKGTLQRTGKTGLFPGSFVE 54
Score = 51.7 bits (124), Expect = 2e-09
Identities = 23/54 (42%), Positives = 35/54 (64%), Gaps = 2/54 (3%)
Query: 146 RCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLR--DRTGVFPSNFVE 197
R RV+ Y P + ELEL D++ V + E+GW++G L+ +TG+FP +FVE
Sbjct: 1 RYRVIVPYPPQSEAELELKEGDIVFVHKKREDGWFKGTLQRTGKTGLFPGSFVE 54
Score = 27.4 bits (61), Expect = 1.2
Identities = 12/34 (35%), Positives = 20/34 (58%)
Query: 13 YTAQEADELTLRKGDLITGIRVQSGGWWEGLLVR 46
Y Q EL L++GD++ + + GW++G L R
Sbjct: 8 YPPQSEAELELKEGDIVFVHKKREDGWFKGTLQR 41
>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 = 51.7 bits (124), Expect = 2e-09
Identities = 22/53 (41%), Positives = 31/53 (58%), Gaps = 2/53 (3%)
Query: 58 RCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGR--LRDRTGVFPSNFV 108
C L SY+ +ELEL + + VL + +EGW RG + R G+FPSN+V
Sbjct: 1 MCVALHSYSAHRPEELELQKGEGVRVLGKFQEGWLRGLSLVTGRVGIFPSNYV 53
Score = 51.7 bits (124), Expect = 2e-09
Identities = 22/53 (41%), Positives = 31/53 (58%), Gaps = 2/53 (3%)
Query: 146 RCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGR--LRDRTGVFPSNFV 196
C L SY+ +ELEL + + VL + +EGW RG + R G+FPSN+V
Sbjct: 1 MCVALHSYSAHRPEELELQKGEGVRVLGKFQEGWLRGLSLVTGRVGIFPSNYV 53
>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 = 51.5 bits (123), Expect = 3e-09
Identities = 26/59 (44%), Positives = 37/59 (62%), Gaps = 4/59 (6%)
Query: 56 GRRCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRT---GVFPSNFVEEI 111
G + L++Y P N DELEL DVIDV+ + ++GW+ G R RT G FP N+V+ +
Sbjct: 4 GEPFQALYNYMPRNEDELELREGDVIDVMEKCDDGWFVGTSR-RTKFFGTFPGNYVKRL 61
Score = 51.5 bits (123), Expect = 3e-09
Identities = 26/59 (44%), Positives = 37/59 (62%), Gaps = 4/59 (6%)
Query: 144 GRRCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRT---GVFPSNFVEEI 199
G + L++Y P N DELEL DVIDV+ + ++GW+ G R RT G FP N+V+ +
Sbjct: 4 GEPFQALYNYMPRNEDELELREGDVIDVMEKCDDGWFVGTSR-RTKFFGTFPGNYVKRL 61
Score = 29.2 bits (65), Expect = 0.36
Identities = 13/38 (34%), Positives = 21/38 (55%)
Query: 11 FDYTAQEADELTLRKGDLITGIRVQSGGWWEGLLVRER 48
++Y + DEL LR+GD+I + GW+ G R +
Sbjct: 11 YNYMPRNEDELELREGDVIDVMEKCDDGWFVGTSRRTK 48
>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 = 51.0 bits (122), Expect = 4e-09
Identities = 17/48 (35%), Positives = 26/48 (54%)
Query: 62 LFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVE 109
L+ Y DE+ + I + V+EGWW+G G+FP+N+VE
Sbjct: 6 LYDYQGEGDDEISFDPQETITDIEMVDEGWWKGTCHGHRGLFPANYVE 53
Score = 51.0 bits (122), Expect = 4e-09
Identities = 17/48 (35%), Positives = 26/48 (54%)
Query: 150 LFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVE 197
L+ Y DE+ + I + V+EGWW+G G+FP+N+VE
Sbjct: 6 LYDYQGEGDDEISFDPQETITDIEMVDEGWWKGTCHGHRGLFPANYVE 53
>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 = 51.0 bits (122), Expect = 4e-09
Identities = 20/50 (40%), Positives = 29/50 (58%)
Query: 60 RVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVE 109
R L+ + DEL + DVI+VL WW+GRL + G+FP+N+V
Sbjct: 3 RALYDFEALEDDELGFNSGDVIEVLDSSNPSWWKGRLHGKLGLFPANYVA 52
Score = 51.0 bits (122), Expect = 4e-09
Identities = 20/50 (40%), Positives = 29/50 (58%)
Query: 148 RVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVE 197
R L+ + DEL + DVI+VL WW+GRL + G+FP+N+V
Sbjct: 3 RALYDFEALEDDELGFNSGDVIEVLDSSNPSWWKGRLHGKLGLFPANYVA 52
>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 = 50.8 bits (122), Expect = 4e-09
Identities = 20/52 (38%), Positives = 29/52 (55%), Gaps = 3/52 (5%)
Query: 59 CRVLFSYTPANADE---LELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNF 107
C+ L+ + + DE L DVI V+ V+E W GRL D+ G+FP +F
Sbjct: 2 CKALYDFEMKDEDEKDCLTFKKGDVITVIRRVDENWAEGRLGDKIGIFPISF 53
Score = 50.8 bits (122), Expect = 4e-09
Identities = 20/52 (38%), Positives = 29/52 (55%), Gaps = 3/52 (5%)
Query: 147 CRVLFSYTPANADE---LELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNF 195
C+ L+ + + DE L DVI V+ V+E W GRL D+ G+FP +F
Sbjct: 2 CKALYDFEMKDEDEKDCLTFKKGDVITVIRRVDENWAEGRLGDKIGIFPISF 53
Score = 29.2 bits (66), Expect = 0.25
Identities = 16/37 (43%), Positives = 22/37 (59%), Gaps = 3/37 (8%)
Query: 11 FDYTAQEADE---LTLRKGDLITGIRVQSGGWWEGLL 44
+D+ ++ DE LT +KGD+IT IR W EG L
Sbjct: 6 YDFEMKDEDEKDCLTFKKGDVITVIRRVDENWAEGRL 42
>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 = 50.7 bits (121), Expect = 4e-09
Identities = 21/53 (39%), Positives = 34/53 (64%), Gaps = 2/53 (3%)
Query: 59 CRV--LFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVE 109
C+V ++ YT N DEL +I+VL++ + WW+G L + G+FPSN+V+
Sbjct: 1 CQVIGMYDYTAQNDDELAFSKGQIINVLNKEDPDWWKGELNGQVGLFPSNYVK 53
Score = 50.7 bits (121), Expect = 4e-09
Identities = 21/53 (39%), Positives = 34/53 (64%), Gaps = 2/53 (3%)
Query: 147 CRV--LFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVE 197
C+V ++ YT N DEL +I+VL++ + WW+G L + G+FPSN+V+
Sbjct: 1 CQVIGMYDYTAQNDDELAFSKGQIINVLNKEDPDWWKGELNGQVGLFPSNYVK 53
Score = 36.1 bits (83), Expect = 8e-04
Identities = 15/34 (44%), Positives = 20/34 (58%)
Query: 11 FDYTAQEADELTLRKGDLITGIRVQSGGWWEGLL 44
+DYTAQ DEL KG +I + + WW+G L
Sbjct: 7 YDYTAQNDDELAFSKGQIINVLNKEDPDWWKGEL 40
>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 = 50.9 bits (122), Expect = 5e-09
Identities = 21/53 (39%), Positives = 32/53 (60%), Gaps = 1/53 (1%)
Query: 58 RCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRD-RTGVFPSNFVE 109
R R L+ Y A+ E+ D+I + +++EGWWRG D G+FP+N+VE
Sbjct: 1 RARALYDYQAADDTEISFDPGDIITDIEQIDEGWWRGTGPDGTYGLFPANYVE 53
Score = 50.9 bits (122), Expect = 5e-09
Identities = 21/53 (39%), Positives = 32/53 (60%), Gaps = 1/53 (1%)
Query: 146 RCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRD-RTGVFPSNFVE 197
R R L+ Y A+ E+ D+I + +++EGWWRG D G+FP+N+VE
Sbjct: 1 RARALYDYQAADDTEISFDPGDIITDIEQIDEGWWRGTGPDGTYGLFPANYVE 53
Score = 36.6 bits (85), Expect = 6e-04
Identities = 13/33 (39%), Positives = 18/33 (54%)
Query: 11 FDYTAQEADELTLRKGDLITGIRVQSGGWWEGL 43
+DY A + E++ GD+IT I GWW G
Sbjct: 6 YDYQAADDTEISFDPGDIITDIEQIDEGWWRGT 38
>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 = 50.5 bits (121), Expect = 6e-09
Identities = 16/55 (29%), Positives = 28/55 (50%), Gaps = 2/55 (3%)
Query: 58 RCRVLFSYTPANADELELHVNDVIDVLSEVE--EGWWRGRLRDRTGVFPSNFVEE 110
+ L+ + +L D+I +L + + WW GR+ R G+FP+N+VE
Sbjct: 1 KAVALYDFAGEQPGDLAFQKGDIITILKKSDSQNDWWTGRIGGREGIFPANYVEL 55
Score = 50.5 bits (121), Expect = 6e-09
Identities = 16/55 (29%), Positives = 28/55 (50%), Gaps = 2/55 (3%)
Query: 146 RCRVLFSYTPANADELELHVNDVIDVLSEVE--EGWWRGRLRDRTGVFPSNFVEE 198
+ L+ + +L D+I +L + + WW GR+ R G+FP+N+VE
Sbjct: 1 KAVALYDFAGEQPGDLAFQKGDIITILKKSDSQNDWWTGRIGGREGIFPANYVEL 55
>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 = 50.6 bits (121), Expect = 6e-09
Identities = 16/46 (34%), Positives = 26/46 (56%)
Query: 63 FSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFV 108
+ ++ + +L D+I+VL + WWRGR+ R G FP N+V
Sbjct: 6 YDFSAEDPSQLSFRRGDIIEVLDCPDPNWWRGRISGRVGFFPRNYV 51
Score = 50.6 bits (121), Expect = 6e-09
Identities = 16/46 (34%), Positives = 26/46 (56%)
Query: 151 FSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFV 196
+ ++ + +L D+I+VL + WWRGR+ R G FP N+V
Sbjct: 6 YDFSAEDPSQLSFRRGDIIEVLDCPDPNWWRGRISGRVGFFPRNYV 51
>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 = 50.1 bits (120), Expect = 7e-09
Identities = 21/53 (39%), Positives = 31/53 (58%), Gaps = 1/53 (1%)
Query: 58 RCRVLFSYTPANADELELHVNDVIDVLS-EVEEGWWRGRLRDRTGVFPSNFVE 109
R L+ Y +DEL D++ L E E+GW +GRL R G++P+N+VE
Sbjct: 1 PVRALYDYEGQESDELSFKAGDILTKLEEEDEQGWCKGRLDGRVGLYPANYVE 53
Score = 50.1 bits (120), Expect = 7e-09
Identities = 21/53 (39%), Positives = 31/53 (58%), Gaps = 1/53 (1%)
Query: 146 RCRVLFSYTPANADELELHVNDVIDVLS-EVEEGWWRGRLRDRTGVFPSNFVE 197
R L+ Y +DEL D++ L E E+GW +GRL R G++P+N+VE
Sbjct: 1 PVRALYDYEGQESDELSFKAGDILTKLEEEDEQGWCKGRLDGRVGLYPANYVE 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 = 50.5 bits (120), Expect = 7e-09
Identities = 25/52 (48%), Positives = 28/52 (53%)
Query: 60 RVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVEEI 111
R F++ N DEL DVI V E GWW G RTG FPSN+V EI
Sbjct: 3 RAKFNFQQTNEDELSFSKGDVIHVTRVEEGGWWEGTHNGRTGWFPSNYVREI 54
Score = 50.5 bits (120), Expect = 7e-09
Identities = 25/52 (48%), Positives = 28/52 (53%)
Query: 148 RVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVEEI 199
R F++ N DEL DVI V E GWW G RTG FPSN+V EI
Sbjct: 3 RAKFNFQQTNEDELSFSKGDVIHVTRVEEGGWWEGTHNGRTGWFPSNYVREI 54
Score = 39.3 bits (91), Expect = 7e-05
Identities = 16/35 (45%), Positives = 22/35 (62%)
Query: 10 EFDYTAQEADELTLRKGDLITGIRVQSGGWWEGLL 44
+F++ DEL+ KGD+I RV+ GGWWEG
Sbjct: 5 KFNFQQTNEDELSFSKGDVIHVTRVEEGGWWEGTH 39
>gnl|CDD|212929 cd11996, SH3_Intersectin2_5, Fifth Src homology 3 domain (or SH3E)
of Intersectin-2. Intersectin-2 (ITSN2) is an adaptor
protein that functions in exo- and endocytosis, actin
cytoskeletal reorganization, and signal transduction. It
plays a role in clathrin-coated pit (CCP) formation. It
binds to many proteins through its multidomain structure
and facilitate the assembly of multimeric complexes.
ITSN2 also functions as a specific GEF for Cdc42
activation in epithelial morphogenesis, and is required
in mitotic spindle orientation. It exists in
alternatively spliced short and long isoforms. The short
isoform contains two Eps15 homology domains (EH1 and
EH2), a coiled-coil region and five SH3 domains
(SH3A-E), while the long isoform, in addition, contains
RhoGEF (also called Dbl-homologous or DH), Pleckstrin
homology (PH) and C2 domains. The fifth SH3 domain (or
SH3E) of ITSN2 is expected to bind protein partners,
similar to ITSN1 which has been shown to bind many
protein partners including SGIP1, Sos1, dynamin1/2,
CIN85, c-Cbl, SHIP2, N-WASP, and synaptojanin-1, among
others. SH3 domains are protein interaction domains that
bind to proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 54
Score = 50.0 bits (119), Expect = 8e-09
Identities = 21/53 (39%), Positives = 34/53 (64%), Gaps = 2/53 (3%)
Query: 59 CRV--LFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVE 109
C+V ++ YT N DEL +I+VL++ + WW+G + TG+FPSN+V+
Sbjct: 1 CQVIAMYDYTANNEDELSFSKGQLINVLNKDDPDWWQGEINGVTGLFPSNYVK 53
Score = 50.0 bits (119), Expect = 8e-09
Identities = 21/53 (39%), Positives = 34/53 (64%), Gaps = 2/53 (3%)
Query: 147 CRV--LFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVE 197
C+V ++ YT N DEL +I+VL++ + WW+G + TG+FPSN+V+
Sbjct: 1 CQVIAMYDYTANNEDELSFSKGQLINVLNKDDPDWWQGEINGVTGLFPSNYVK 53
Score = 33.8 bits (77), Expect = 0.007
Identities = 14/32 (43%), Positives = 18/32 (56%)
Query: 11 FDYTAQEADELTLRKGDLITGIRVQSGGWWEG 42
+DYTA DEL+ KG LI + WW+G
Sbjct: 7 YDYTANNEDELSFSKGQLINVLNKDDPDWWQG 38
>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 = 50.0 bits (120), Expect = 1e-08
Identities = 18/55 (32%), Positives = 30/55 (54%), Gaps = 2/55 (3%)
Query: 58 RCRVLFSYTPANADELELHVNDVIDVLSE-VEEGWWRGR-LRDRTGVFPSNFVEE 110
+ R L+ + + EL L +V+ + + V +GW GR R G+FPS++VE
Sbjct: 1 KVRALYDFDSQPSGELSLRAGEVLTITRQDVGDGWLEGRNSRGEVGLFPSSYVEI 55
Score = 50.0 bits (120), Expect = 1e-08
Identities = 18/55 (32%), Positives = 30/55 (54%), Gaps = 2/55 (3%)
Query: 146 RCRVLFSYTPANADELELHVNDVIDVLSE-VEEGWWRGR-LRDRTGVFPSNFVEE 198
+ R L+ + + EL L +V+ + + V +GW GR R G+FPS++VE
Sbjct: 1 KVRALYDFDSQPSGELSLRAGEVLTITRQDVGDGWLEGRNSRGEVGLFPSSYVEI 55
Score = 40.8 bits (96), Expect = 2e-05
Identities = 15/41 (36%), Positives = 23/41 (56%), Gaps = 1/41 (2%)
Query: 7 ASVEFDYTAQEADELTLRKGDLITGIRVQSG-GWWEGLLVR 46
+D+ +Q + EL+LR G+++T R G GW EG R
Sbjct: 2 VRALYDFDSQPSGELSLRAGEVLTITRQDVGDGWLEGRNSR 42
>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 = 49.7 bits (119), Expect = 1e-08
Identities = 20/51 (39%), Positives = 25/51 (49%)
Query: 58 RCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFV 108
RC F + DEL DVI + V E W +G L + G+FP NFV
Sbjct: 1 RCVARFDFEGEQEDELSFSEGDVITLKEYVGEEWAKGELNGKIGIFPLNFV 51
Score = 49.7 bits (119), Expect = 1e-08
Identities = 20/51 (39%), Positives = 25/51 (49%)
Query: 146 RCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFV 196
RC F + DEL DVI + V E W +G L + G+FP NFV
Sbjct: 1 RCVARFDFEGEQEDELSFSEGDVITLKEYVGEEWAKGELNGKIGIFPLNFV 51
>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 = 49.7 bits (119), Expect = 1e-08
Identities = 21/56 (37%), Positives = 29/56 (51%), Gaps = 4/56 (7%)
Query: 59 CRVLFSYTPANADELELHVNDVIDVLSE----VEEGWWRGRLRDRTGVFPSNFVEE 110
R L+ Y + +EL +I +L + V++GWW G R GVFPS VEE
Sbjct: 2 VRALYDYEAQSDEELSFPEGAIIRILRKDDNGVDDGWWEGEFNGRVGVFPSLVVEE 57
Score = 49.7 bits (119), Expect = 1e-08
Identities = 21/56 (37%), Positives = 29/56 (51%), Gaps = 4/56 (7%)
Query: 147 CRVLFSYTPANADELELHVNDVIDVLSE----VEEGWWRGRLRDRTGVFPSNFVEE 198
R L+ Y + +EL +I +L + V++GWW G R GVFPS VEE
Sbjct: 2 VRALYDYEAQSDEELSFPEGAIIRILRKDDNGVDDGWWEGEFNGRVGVFPSLVVEE 57
>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 = 49.6 bits (119), Expect = 1e-08
Identities = 17/54 (31%), Positives = 28/54 (51%), Gaps = 5/54 (9%)
Query: 59 CRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRT-----GVFPSNF 107
L+ +TP + ++L D+I VL++ GWW G + + G FPSN+
Sbjct: 2 VVALYDFTPKSKNQLSFKAGDIIYVLNKDPSGWWDGVIISSSGKVKRGWFPSNY 55
Score = 49.6 bits (119), Expect = 1e-08
Identities = 17/54 (31%), Positives = 28/54 (51%), Gaps = 5/54 (9%)
Query: 147 CRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRT-----GVFPSNF 195
L+ +TP + ++L D+I VL++ GWW G + + G FPSN+
Sbjct: 2 VVALYDFTPKSKNQLSFKAGDIIYVLNKDPSGWWDGVIISSSGKVKRGWFPSNY 55
Score = 41.5 bits (98), Expect = 9e-06
Identities = 11/41 (26%), Positives = 24/41 (58%)
Query: 11 FDYTAQEADELTLRKGDLITGIRVQSGGWWEGLLVRERQAV 51
+D+T + ++L+ + GD+I + GWW+G+++ V
Sbjct: 6 YDFTPKSKNQLSFKAGDIIYVLNKDPSGWWDGVIISSSGKV 46
>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 = 49.6 bits (118), Expect = 1e-08
Identities = 20/51 (39%), Positives = 31/51 (60%), Gaps = 2/51 (3%)
Query: 60 RVLFSYTPANADELELHVNDVIDVLSEVEEGWWRG--RLRDRTGVFPSNFV 108
+ ++ Y P N DELEL D +DV+ + ++GW+ G R + G FP N+V
Sbjct: 5 KAVYQYRPQNEDELELREGDRVDVMQQCDDGWFVGVSRRTQKFGTFPGNYV 55
Score = 49.6 bits (118), Expect = 1e-08
Identities = 20/51 (39%), Positives = 31/51 (60%), Gaps = 2/51 (3%)
Query: 148 RVLFSYTPANADELELHVNDVIDVLSEVEEGWWRG--RLRDRTGVFPSNFV 196
+ ++ Y P N DELEL D +DV+ + ++GW+ G R + G FP N+V
Sbjct: 5 KAVYQYRPQNEDELELREGDRVDVMQQCDDGWFVGVSRRTQKFGTFPGNYV 55
Score = 28.8 bits (64), Expect = 0.48
Identities = 16/46 (34%), Positives = 23/46 (50%), Gaps = 1/46 (2%)
Query: 11 FDYTAQEADELTLRKGDLITGIRVQSGGWWEGLLVRERQAVTEQPG 56
+ Y Q DEL LR+GD + ++ GW+ G + R Q PG
Sbjct: 8 YQYRPQNEDELELREGDRVDVMQQCDDGWFVG-VSRRTQKFGTFPG 52
>gnl|CDD|212767 cd11833, SH3_Stac_1, First C-terminal Src homology 3 domain of SH3
and cysteine-rich domain-containing (Stac) proteins.
Stac proteins are putative adaptor proteins that contain
a cysteine-rich C1 domain and one or two SH3 domains at
the C-terminus. There are three mammalian members
(Stac1, Stac2, and Stac3) of this family. Stac1 and
Stac3 contain two SH3 domains while Stac2 contains a
single SH3 domain at the C-terminus. This model
represents the first C-terminal SH3 domain of Stac1 and
Stac3, and the single C-terminal SH3 domain of Stac2.
Stac1 and Stac2 have been found to be expressed
differently in mature dorsal root ganglia (DRG) neurons.
Stac1 is mainly expressed in peptidergic neurons while
Stac2 is found in a subset of nonpeptidergic and all
trkB+ neurons. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP motifs.
They play versatile and diverse roles in the cell
including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 53
Score = 49.4 bits (118), Expect = 1e-08
Identities = 19/47 (40%), Positives = 30/47 (63%)
Query: 62 LFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFV 108
L+ + P ++LE+ D I +L + E WW+G++ DR G FP+NFV
Sbjct: 5 LYKFKPQENEDLEMRPGDKITLLDDSNEDWWKGKIEDRVGFFPANFV 51
Score = 49.4 bits (118), Expect = 1e-08
Identities = 19/47 (40%), Positives = 30/47 (63%)
Query: 150 LFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFV 196
L+ + P ++LE+ D I +L + E WW+G++ DR G FP+NFV
Sbjct: 5 LYKFKPQENEDLEMRPGDKITLLDDSNEDWWKGKIEDRVGFFPANFV 51
>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 = 49.1 bits (117), Expect = 2e-08
Identities = 20/48 (41%), Positives = 23/48 (47%)
Query: 62 LFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVE 109
L Y ++L D IDVLSEV E W G R G+FP FV
Sbjct: 5 LHRYEAQGPEDLGFREGDTIDVLSEVNEAWLEGHSDGRVGIFPKCFVV 52
Score = 49.1 bits (117), Expect = 2e-08
Identities = 20/48 (41%), Positives = 23/48 (47%)
Query: 150 LFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVE 197
L Y ++L D IDVLSEV E W G R G+FP FV
Sbjct: 5 LHRYEAQGPEDLGFREGDTIDVLSEVNEAWLEGHSDGRVGIFPKCFVV 52
>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 = 49.1 bits (117), Expect = 2e-08
Identities = 20/56 (35%), Positives = 32/56 (57%), Gaps = 6/56 (10%)
Query: 59 CRVLFSY------TPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFV 108
CR L+++ + D L+ +D+I V+S V+E W G+L D+ G+FP FV
Sbjct: 2 CRALYNFDLKEKNREESKDCLKFQKDDIITVISRVDENWAEGKLGDQVGIFPILFV 57
Score = 49.1 bits (117), Expect = 2e-08
Identities = 20/56 (35%), Positives = 32/56 (57%), Gaps = 6/56 (10%)
Query: 147 CRVLFSY------TPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFV 196
CR L+++ + D L+ +D+I V+S V+E W G+L D+ G+FP FV
Sbjct: 2 CRALYNFDLKEKNREESKDCLKFQKDDIITVISRVDENWAEGKLGDQVGIFPILFV 57
>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 = 48.7 bits (116), Expect = 2e-08
Identities = 20/48 (41%), Positives = 30/48 (62%), Gaps = 1/48 (2%)
Query: 62 LFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRD-RTGVFPSNFV 108
L+ YT +DEL +H D+I VL + + WW G L + + G FP+N+V
Sbjct: 5 LYDYTANRSDELTIHRGDIIRVLYKDNDNWWFGSLVNGQQGYFPANYV 52
Score = 48.7 bits (116), Expect = 2e-08
Identities = 20/48 (41%), Positives = 30/48 (62%), Gaps = 1/48 (2%)
Query: 150 LFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRD-RTGVFPSNFV 196
L+ YT +DEL +H D+I VL + + WW G L + + G FP+N+V
Sbjct: 5 LYDYTANRSDELTIHRGDIIRVLYKDNDNWWFGSLVNGQQGYFPANYV 52
Score = 41.0 bits (96), Expect = 2e-05
Identities = 17/39 (43%), Positives = 25/39 (64%)
Query: 11 FDYTAQEADELTLRKGDLITGIRVQSGGWWEGLLVRERQ 49
+DYTA +DELT+ +GD+I + + WW G LV +Q
Sbjct: 6 YDYTANRSDELTIHRGDIIRVLYKDNDNWWFGSLVNGQQ 44
>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 = 48.3 bits (115), Expect = 4e-08
Identities = 22/54 (40%), Positives = 30/54 (55%)
Query: 58 RCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVEEI 111
R LF +T + EL DVI +LS V + W G +R TG+FP +FV+ I
Sbjct: 1 RAEALFDFTGNSKLELNFKAGDVIFLLSRVNKDWLEGTVRGATGIFPLSFVKII 54
Score = 48.3 bits (115), Expect = 4e-08
Identities = 22/54 (40%), Positives = 30/54 (55%)
Query: 146 RCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVEEI 199
R LF +T + EL DVI +LS V + W G +R TG+FP +FV+ I
Sbjct: 1 RAEALFDFTGNSKLELNFKAGDVIFLLSRVNKDWLEGTVRGATGIFPLSFVKII 54
Score = 28.2 bits (63), Expect = 0.57
Identities = 14/45 (31%), Positives = 20/45 (44%), Gaps = 1/45 (2%)
Query: 7 ASVEFDYTAQEADELTLRKGDLITGIRVQSGGWWEGLLVRERQAV 51
A FD+T EL + GD+I + + W EG VR +
Sbjct: 2 AEALFDFTGNSKLELNFKAGDVIFLLSRVNKDWLEG-TVRGATGI 45
>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 = 48.0 bits (114), Expect = 5e-08
Identities = 22/53 (41%), Positives = 34/53 (64%), Gaps = 5/53 (9%)
Query: 61 VLFSYTPANADELELHVNDVIDVLSE-----VEEGWWRGRLRDRTGVFPSNFV 108
L+ Y + DEL L DV++VLS+ ++GWW G++R R G+FP+N+V
Sbjct: 4 ALYDYEASGEDELSLRRGDVVEVLSQDAAVSGDDGWWAGKIRHRLGIFPANYV 56
Score = 48.0 bits (114), Expect = 5e-08
Identities = 22/53 (41%), Positives = 34/53 (64%), Gaps = 5/53 (9%)
Query: 149 VLFSYTPANADELELHVNDVIDVLSE-----VEEGWWRGRLRDRTGVFPSNFV 196
L+ Y + DEL L DV++VLS+ ++GWW G++R R G+FP+N+V
Sbjct: 4 ALYDYEASGEDELSLRRGDVVEVLSQDAAVSGDDGWWAGKIRHRLGIFPANYV 56
>gnl|CDD|212882 cd11949, SH3_GRB2_C, C-terminal Src homology 3 domain of Growth
factor receptor-bound protein 2. GRB2 is a critical
signaling molecule that regulates the Ras pathway by
linking tyrosine kinases to the Ras guanine nucleotide
releasing protein Sos (son of sevenless), which converts
Ras to the active GTP-bound state. It is ubiquitously
expressed in all tissues throughout development and is
important in cell cycle progression, motility,
morphogenesis, and angiogenesis. In lymphocytes, GRB2 is
associated with antigen receptor signaling components.
GRB2 contains an N-terminal SH3 domain, a central SH2
domain, and a C-terminal SH3 domain. The C-terminal SH3
domain of GRB2 binds to Gab2 (Grb2-associated binder 2)
through epitopes containing RxxK motifs, as well as to
the proline-rich C-terminus of FGRF2. SH3 domains are
protein interaction domains that typically bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 53
Score = 47.9 bits (114), Expect = 5e-08
Identities = 17/50 (34%), Positives = 26/50 (52%)
Query: 60 RVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVE 109
+ LF + P EL D I+V+ + WW+G +TG+FP N+V
Sbjct: 3 QALFDFDPQEDGELGFRRGDFIEVMDNSDPNWWKGACHGQTGMFPRNYVT 52
Score = 47.9 bits (114), Expect = 5e-08
Identities = 17/50 (34%), Positives = 26/50 (52%)
Query: 148 RVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVE 197
+ LF + P EL D I+V+ + WW+G +TG+FP N+V
Sbjct: 3 QALFDFDPQEDGELGFRRGDFIEVMDNSDPNWWKGACHGQTGMFPRNYVT 52
Score = 36.4 bits (84), Expect = 7e-04
Identities = 13/32 (40%), Positives = 17/32 (53%)
Query: 11 FDYTAQEADELTLRKGDLITGIRVQSGGWWEG 42
FD+ QE EL R+GD I + WW+G
Sbjct: 6 FDFDPQEDGELGFRRGDFIEVMDNSDPNWWKG 37
>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 = 47.6 bits (113), Expect = 7e-08
Identities = 15/49 (30%), Positives = 34/49 (69%)
Query: 61 VLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVE 109
VL + ++D+L L+ +++ +L +++ W+RG+ ++ TG+FP+N V+
Sbjct: 4 VLHDFPAEHSDDLSLNSGEIVYLLEKIDTEWYRGKCKNTTGIFPANHVK 52
Score = 47.6 bits (113), Expect = 7e-08
Identities = 15/49 (30%), Positives = 34/49 (69%)
Query: 149 VLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVE 197
VL + ++D+L L+ +++ +L +++ W+RG+ ++ TG+FP+N V+
Sbjct: 4 VLHDFPAEHSDDLSLNSGEIVYLLEKIDTEWYRGKCKNTTGIFPANHVK 52
>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 = 47.4 bits (113), Expect = 8e-08
Identities = 19/49 (38%), Positives = 27/49 (55%), Gaps = 2/49 (4%)
Query: 62 LFSYTPANADELELHVNDVIDVLSEV--EEGWWRGRLRDRTGVFPSNFV 108
L+S+ +L D I VL+ + WW GRLR R G+FP+N+V
Sbjct: 5 LYSFEGQQPCDLSFQAGDRITVLTRTDSQFDWWEGRLRGRVGIFPANYV 53
Score = 47.4 bits (113), Expect = 8e-08
Identities = 19/49 (38%), Positives = 27/49 (55%), Gaps = 2/49 (4%)
Query: 150 LFSYTPANADELELHVNDVIDVLSEV--EEGWWRGRLRDRTGVFPSNFV 196
L+S+ +L D I VL+ + WW GRLR R G+FP+N+V
Sbjct: 5 LYSFEGQQPCDLSFQAGDRITVLTRTDSQFDWWEGRLRGRVGIFPANYV 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 = 47.7 bits (113), Expect = 8e-08
Identities = 23/49 (46%), Positives = 29/49 (59%)
Query: 63 FSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVEEI 111
F++ N DEL + D+I V E GWW G L +TG FPSN+V EI
Sbjct: 8 FNFKQTNEDELSVCKGDIIYVTRVEEGGWWEGTLNGKTGWFPSNYVREI 56
Score = 47.7 bits (113), Expect = 8e-08
Identities = 23/49 (46%), Positives = 29/49 (59%)
Query: 151 FSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVEEI 199
F++ N DEL + D+I V E GWW G L +TG FPSN+V EI
Sbjct: 8 FNFKQTNEDELSVCKGDIIYVTRVEEGGWWEGTLNGKTGWFPSNYVREI 56
Score = 41.9 bits (98), Expect = 8e-06
Identities = 17/34 (50%), Positives = 23/34 (67%)
Query: 11 FDYTAQEADELTLRKGDLITGIRVQSGGWWEGLL 44
F++ DEL++ KGD+I RV+ GGWWEG L
Sbjct: 8 FNFKQTNEDELSVCKGDIIYVTRVEEGGWWEGTL 41
>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 = 47.1 bits (112), Expect = 8e-08
Identities = 20/50 (40%), Positives = 29/50 (58%)
Query: 58 RCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNF 107
+ R L+ +T N DEL D+I L ++E W G LR ++G+FP NF
Sbjct: 1 KARALYDFTGENEDELSFKAGDIITELESIDEEWMSGELRGKSGIFPKNF 50
Score = 47.1 bits (112), Expect = 8e-08
Identities = 20/50 (40%), Positives = 29/50 (58%)
Query: 146 RCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNF 195
+ R L+ +T N DEL D+I L ++E W G LR ++G+FP NF
Sbjct: 1 KARALYDFTGENEDELSFKAGDIITELESIDEEWMSGELRGKSGIFPKNF 50
Score = 29.8 bits (67), Expect = 0.14
Identities = 12/38 (31%), Positives = 20/38 (52%)
Query: 11 FDYTAQEADELTLRKGDLITGIRVQSGGWWEGLLVRER 48
+D+T + DEL+ + GD+IT + W G L +
Sbjct: 6 YDFTGENEDELSFKAGDIITELESIDEEWMSGELRGKS 43
>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 = 47.3 bits (113), Expect = 9e-08
Identities = 19/53 (35%), Positives = 26/53 (49%), Gaps = 1/53 (1%)
Query: 58 RCRVLFSYTPANADELELHVNDVI-DVLSEVEEGWWRGRLRDRTGVFPSNFVE 109
R R L++ + EL +I +V E GW G L RTG+ P N+VE
Sbjct: 1 RARALYACKAEDESELSFEPGQIITNVQPSDEPGWLEGTLNGRTGLIPENYVE 53
Score = 47.3 bits (113), Expect = 9e-08
Identities = 19/53 (35%), Positives = 26/53 (49%), Gaps = 1/53 (1%)
Query: 146 RCRVLFSYTPANADELELHVNDVI-DVLSEVEEGWWRGRLRDRTGVFPSNFVE 197
R R L++ + EL +I +V E GW G L RTG+ P N+VE
Sbjct: 1 RARALYACKAEDESELSFEPGQIITNVQPSDEPGWLEGTLNGRTGLIPENYVE 53
>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 = 47.3 bits (112), Expect = 1e-07
Identities = 19/52 (36%), Positives = 30/52 (57%)
Query: 57 RRCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFV 108
R+ R ++ + A +EL D+I +L + + WW+G TG+FPSNFV
Sbjct: 1 RKVRAIYDFEAAEDNELTFKAGDIITILDDSDPNWWKGETPQGTGLFPSNFV 52
Score = 47.3 bits (112), Expect = 1e-07
Identities = 19/52 (36%), Positives = 30/52 (57%)
Query: 145 RRCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFV 196
R+ R ++ + A +EL D+I +L + + WW+G TG+FPSNFV
Sbjct: 1 RKVRAIYDFEAAEDNELTFKAGDIITILDDSDPNWWKGETPQGTGLFPSNFV 52
Score = 32.6 bits (74), Expect = 0.019
Identities = 13/32 (40%), Positives = 20/32 (62%)
Query: 11 FDYTAQEADELTLRKGDLITGIRVQSGGWWEG 42
+D+ A E +ELT + GD+IT + WW+G
Sbjct: 7 YDFEAAEDNELTFKAGDIITILDDSDPNWWKG 38
>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 = 46.9 bits (111), Expect = 1e-07
Identities = 20/52 (38%), Positives = 33/52 (63%), Gaps = 2/52 (3%)
Query: 62 LFSYTPANADELELHVNDVIDVLSEVEEGWWRG-RLRD-RTGVFPSNFVEEI 111
L++Y P DELEL ++ V+ + ++GW++G LR +GVFP N+V +
Sbjct: 6 LYAYKPQKNDELELRKGEMYRVIEKCQDGWFKGTSLRTGVSGVFPGNYVTPV 57
Score = 46.9 bits (111), Expect = 1e-07
Identities = 20/52 (38%), Positives = 33/52 (63%), Gaps = 2/52 (3%)
Query: 150 LFSYTPANADELELHVNDVIDVLSEVEEGWWRG-RLRD-RTGVFPSNFVEEI 199
L++Y P DELEL ++ V+ + ++GW++G LR +GVFP N+V +
Sbjct: 6 LYAYKPQKNDELELRKGEMYRVIEKCQDGWFKGTSLRTGVSGVFPGNYVTPV 57
Score = 31.9 bits (72), Expect = 0.034
Identities = 14/36 (38%), Positives = 21/36 (58%)
Query: 11 FDYTAQEADELTLRKGDLITGIRVQSGGWWEGLLVR 46
+ Y Q+ DEL LRKG++ I GW++G +R
Sbjct: 7 YAYKPQKNDELELRKGEMYRVIEKCQDGWFKGTSLR 42
>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 = 46.7 bits (111), Expect = 1e-07
Identities = 18/52 (34%), Positives = 29/52 (55%)
Query: 57 RRCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFV 108
R+ R L+ + A +EL ++I VL + + WW+G G+FP+NFV
Sbjct: 1 RKVRALYDFEAAEDNELTFKAGEIITVLDDSDPNWWKGSNHRGEGLFPANFV 52
Score = 46.7 bits (111), Expect = 1e-07
Identities = 18/52 (34%), Positives = 29/52 (55%)
Query: 145 RRCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFV 196
R+ R L+ + A +EL ++I VL + + WW+G G+FP+NFV
Sbjct: 1 RKVRALYDFEAAEDNELTFKAGEIITVLDDSDPNWWKGSNHRGEGLFPANFV 52
Score = 32.4 bits (74), Expect = 0.021
Identities = 12/32 (37%), Positives = 20/32 (62%)
Query: 11 FDYTAQEADELTLRKGDLITGIRVQSGGWWEG 42
+D+ A E +ELT + G++IT + WW+G
Sbjct: 7 YDFEAAEDNELTFKAGEIITVLDDSDPNWWKG 38
>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 = 46.2 bits (110), Expect = 2e-07
Identities = 19/51 (37%), Positives = 30/51 (58%)
Query: 58 RCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFV 108
+ RVL + +EL+L DV+ + +++GW+RG L R G+FP FV
Sbjct: 1 QARVLQDLSAQLDEELDLREGDVVTITGILDKGWFRGELNGRRGIFPEGFV 51
Score = 46.2 bits (110), Expect = 2e-07
Identities = 19/51 (37%), Positives = 30/51 (58%)
Query: 146 RCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFV 196
+ RVL + +EL+L DV+ + +++GW+RG L R G+FP FV
Sbjct: 1 QARVLQDLSAQLDEELDLREGDVVTITGILDKGWFRGELNGRRGIFPEGFV 51
Score = 32.7 bits (75), Expect = 0.015
Identities = 15/36 (41%), Positives = 22/36 (61%)
Query: 7 ASVEFDYTAQEADELTLRKGDLITGIRVQSGGWWEG 42
A V D +AQ +EL LR+GD++T + GW+ G
Sbjct: 2 ARVLQDLSAQLDEELDLREGDVVTITGILDKGWFRG 37
>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 = 46.6 bits (111), Expect = 2e-07
Identities = 24/61 (39%), Positives = 32/61 (52%), Gaps = 8/61 (13%)
Query: 58 RCRVLFSYTPA----NAD---ELELHVNDVIDVLSEVEE-GWWRGRLRDRTGVFPSNFVE 109
R LF Y P N D EL D+I V E++E G++ G L + G+ PSNF+E
Sbjct: 1 RMVALFDYDPRESSPNVDAEVELSFRAGDIITVFGEMDEDGFYYGELNGQRGLVPSNFLE 60
Query: 110 E 110
E
Sbjct: 61 E 61
Score = 46.6 bits (111), Expect = 2e-07
Identities = 24/61 (39%), Positives = 32/61 (52%), Gaps = 8/61 (13%)
Query: 146 RCRVLFSYTPA----NAD---ELELHVNDVIDVLSEVEE-GWWRGRLRDRTGVFPSNFVE 197
R LF Y P N D EL D+I V E++E G++ G L + G+ PSNF+E
Sbjct: 1 RMVALFDYDPRESSPNVDAEVELSFRAGDIITVFGEMDEDGFYYGELNGQRGLVPSNFLE 60
Query: 198 E 198
E
Sbjct: 61 E 61
>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 = 46.0 bits (109), Expect = 2e-07
Identities = 18/51 (35%), Positives = 24/51 (47%)
Query: 58 RCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFV 108
R Y+ ++LE D ID+LSEV + W G R G+FP F
Sbjct: 1 RMVAQHDYSAQGPEDLEFSQGDTIDILSEVNQEWLEGHCDGRIGIFPKCFA 51
Score = 46.0 bits (109), Expect = 2e-07
Identities = 18/51 (35%), Positives = 24/51 (47%)
Query: 146 RCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFV 196
R Y+ ++LE D ID+LSEV + W G R G+FP F
Sbjct: 1 RMVAQHDYSAQGPEDLEFSQGDTIDILSEVNQEWLEGHCDGRIGIFPKCFA 51
>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 = 45.8 bits (108), Expect = 3e-07
Identities = 21/50 (42%), Positives = 28/50 (56%)
Query: 61 VLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVEE 110
V F+YT DEL L + V+ + +GWWRG + G FPSN+V E
Sbjct: 6 VKFNYTAEREDELSLVKGTKVIVMEKCSDGWWRGSYNGQVGWFPSNYVTE 55
Score = 45.8 bits (108), Expect = 3e-07
Identities = 21/50 (42%), Positives = 28/50 (56%)
Query: 149 VLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVEE 198
V F+YT DEL L + V+ + +GWWRG + G FPSN+V E
Sbjct: 6 VKFNYTAEREDELSLVKGTKVIVMEKCSDGWWRGSYNGQVGWFPSNYVTE 55
Score = 36.6 bits (84), Expect = 6e-04
Identities = 17/38 (44%), Positives = 24/38 (63%)
Query: 5 IEASVEFDYTAQEADELTLRKGDLITGIRVQSGGWWEG 42
+ A V+F+YTA+ DEL+L KG + + S GWW G
Sbjct: 2 LPAYVKFNYTAEREDELSLVKGTKVIVMEKCSDGWWRG 39
>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 = 45.8 bits (109), Expect = 3e-07
Identities = 17/53 (32%), Positives = 27/53 (50%), Gaps = 1/53 (1%)
Query: 59 CRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDR-TGVFPSNFVEE 110
+ L+ Y DEL + +I + + + GWWRG + FP+N+VEE
Sbjct: 2 VKALYDYRAQRPDELSFCKHAIITNVEKEDGGWWRGDYGGKKQKWFPANYVEE 54
Score = 45.8 bits (109), Expect = 3e-07
Identities = 17/53 (32%), Positives = 27/53 (50%), Gaps = 1/53 (1%)
Query: 147 CRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDR-TGVFPSNFVEE 198
+ L+ Y DEL + +I + + + GWWRG + FP+N+VEE
Sbjct: 2 VKALYDYRAQRPDELSFCKHAIITNVEKEDGGWWRGDYGGKKQKWFPANYVEE 54
Score = 44.2 bits (105), Expect = 9e-07
Identities = 15/32 (46%), Positives = 20/32 (62%)
Query: 11 FDYTAQEADELTLRKGDLITGIRVQSGGWWEG 42
+DY AQ DEL+ K +IT + + GGWW G
Sbjct: 6 YDYRAQRPDELSFCKHAIITNVEKEDGGWWRG 37
>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 = 45.2 bits (107), Expect = 4e-07
Identities = 16/49 (32%), Positives = 23/49 (46%)
Query: 59 CRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNF 107
L+ +T ++L D I V ++ W RGRL R G+FP F
Sbjct: 2 AVALYDFTGETEEDLSFQRGDRILVTEHLDAEWSRGRLNGREGIFPRAF 50
Score = 45.2 bits (107), Expect = 4e-07
Identities = 16/49 (32%), Positives = 23/49 (46%)
Query: 147 CRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNF 195
L+ +T ++L D I V ++ W RGRL R G+FP F
Sbjct: 2 AVALYDFTGETEEDLSFQRGDRILVTEHLDAEWSRGRLNGREGIFPRAF 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 = 45.3 bits (107), Expect = 5e-07
Identities = 17/47 (36%), Positives = 29/47 (61%)
Query: 62 LFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFV 108
L+ + D+L+ H + I V+ + E WWRG++ ++TG FP NF+
Sbjct: 5 LYRFKALEKDDLDFHPGERITVIDDSNEEWWRGKIGEKTGYFPMNFI 51
Score = 45.3 bits (107), Expect = 5e-07
Identities = 17/47 (36%), Positives = 29/47 (61%)
Query: 150 LFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFV 196
L+ + D+L+ H + I V+ + E WWRG++ ++TG FP NF+
Sbjct: 5 LYRFKALEKDDLDFHPGERITVIDDSNEEWWRGKIGEKTGYFPMNFI 51
Score = 25.3 bits (55), Expect = 7.3
Identities = 11/32 (34%), Positives = 16/32 (50%)
Query: 11 FDYTAQEADELTLRKGDLITGIRVQSGGWWEG 42
+ + A E D+L G+ IT I + WW G
Sbjct: 6 YRFKALEKDDLDFHPGERITVIDDSNEEWWRG 37
>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 = 45.0 bits (107), Expect = 6e-07
Identities = 22/57 (38%), Positives = 28/57 (49%), Gaps = 6/57 (10%)
Query: 59 CRVLFSYTPANADELELHVNDVI----DVLSEVEEGWWRG--RLRDRTGVFPSNFVE 109
RVL+ YTP DELEL D I + L +GW G L +G+ P N+ E
Sbjct: 2 LRVLYPYTPQEEDELELVPGDYIYVSPEELDSSSDGWVEGTSWLTGCSGLLPENYTE 58
Score = 45.0 bits (107), Expect = 6e-07
Identities = 22/57 (38%), Positives = 28/57 (49%), Gaps = 6/57 (10%)
Query: 147 CRVLFSYTPANADELELHVNDVI----DVLSEVEEGWWRG--RLRDRTGVFPSNFVE 197
RVL+ YTP DELEL D I + L +GW G L +G+ P N+ E
Sbjct: 2 LRVLYPYTPQEEDELELVPGDYIYVSPEELDSSSDGWVEGTSWLTGCSGLLPENYTE 58
Score = 31.9 bits (73), Expect = 0.029
Identities = 17/38 (44%), Positives = 19/38 (50%), Gaps = 4/38 (10%)
Query: 9 VEFDYTAQEADELTLRKGDLI----TGIRVQSGGWWEG 42
V + YT QE DEL L GD I + S GW EG
Sbjct: 4 VLYPYTPQEEDELELVPGDYIYVSPEELDSSSDGWVEG 41
>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 = 44.9 bits (106), Expect = 6e-07
Identities = 19/52 (36%), Positives = 32/52 (61%), Gaps = 1/52 (1%)
Query: 60 RVLFSYTPANADELELHVNDVIDVLSEV-EEGWWRGRLRDRTGVFPSNFVEE 110
+ + + + EL L D+I +L++ ++GWWRG + R G FP+N+VEE
Sbjct: 3 KARYDFCARDRSELSLKEGDIIKILNKKGQQGWWRGEIYGRVGWFPANYVEE 54
Score = 44.9 bits (106), Expect = 6e-07
Identities = 19/52 (36%), Positives = 32/52 (61%), Gaps = 1/52 (1%)
Query: 148 RVLFSYTPANADELELHVNDVIDVLSEV-EEGWWRGRLRDRTGVFPSNFVEE 198
+ + + + EL L D+I +L++ ++GWWRG + R G FP+N+VEE
Sbjct: 3 KARYDFCARDRSELSLKEGDIIKILNKKGQQGWWRGEIYGRVGWFPANYVEE 54
Score = 29.5 bits (66), Expect = 0.18
Identities = 15/38 (39%), Positives = 24/38 (63%), Gaps = 3/38 (7%)
Query: 7 ASVEFDYTAQEADELTLRKGDLITGIRVQSG--GWWEG 42
A +D+ A++ EL+L++GD+I I + G GWW G
Sbjct: 2 AKARYDFCARDRSELSLKEGDIIK-ILNKKGQQGWWRG 38
>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 = 7e-07
Identities = 18/58 (31%), Positives = 28/58 (48%), Gaps = 5/58 (8%)
Query: 58 RCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRD-----RTGVFPSNFVEE 110
+ + L+ Y + D+L V +I V E + W+ G D + G+FP NFVE
Sbjct: 3 KVKALYPYESDHEDDLNFDVGQLITVTEEEDADWYFGEYVDSNGNTKEGIFPKNFVEV 60
Score = 45.0 bits (107), Expect = 7e-07
Identities = 18/58 (31%), Positives = 28/58 (48%), Gaps = 5/58 (8%)
Query: 146 RCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRD-----RTGVFPSNFVEE 198
+ + L+ Y + D+L V +I V E + W+ G D + G+FP NFVE
Sbjct: 3 KVKALYPYESDHEDDLNFDVGQLITVTEEEDADWYFGEYVDSNGNTKEGIFPKNFVEV 60
Score = 25.4 bits (56), Expect = 7.5
Identities = 9/32 (28%), Positives = 14/32 (43%)
Query: 11 FDYTAQEADELTLRKGDLITGIRVQSGGWWEG 42
+ Y + D+L G LIT + W+ G
Sbjct: 8 YPYESDHEDDLNFDVGQLITVTEEEDADWYFG 39
>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 = 44.1 bits (104), Expect = 1e-06
Identities = 22/52 (42%), Positives = 32/52 (61%), Gaps = 1/52 (1%)
Query: 61 VLFSYTPANADELELHVNDVIDVLSEVEE-GWWRGRLRDRTGVFPSNFVEEI 111
V + Y + DEL + V ++I + ++EE GW G L R G+FP NFV+EI
Sbjct: 4 VEYDYDAVHEDELTIRVGEIIRNVKKLEEEGWLEGELNGRRGMFPDNFVKEI 55
Score = 44.1 bits (104), Expect = 1e-06
Identities = 22/52 (42%), Positives = 32/52 (61%), Gaps = 1/52 (1%)
Query: 149 VLFSYTPANADELELHVNDVIDVLSEVEE-GWWRGRLRDRTGVFPSNFVEEI 199
V + Y + DEL + V ++I + ++EE GW G L R G+FP NFV+EI
Sbjct: 4 VEYDYDAVHEDELTIRVGEIIRNVKKLEEEGWLEGELNGRRGMFPDNFVKEI 55
Score = 37.5 bits (87), Expect = 3e-04
Identities = 19/44 (43%), Positives = 27/44 (61%), Gaps = 1/44 (2%)
Query: 6 EASVEFDYTAQEADELTLRKGDLITGI-RVQSGGWWEGLLVRER 48
E VE+DY A DELT+R G++I + +++ GW EG L R
Sbjct: 1 EYIVEYDYDAVHEDELTIRVGEIIRNVKKLEEEGWLEGELNGRR 44
>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 = 44.2 bits (104), Expect = 1e-06
Identities = 19/58 (32%), Positives = 33/58 (56%), Gaps = 2/58 (3%)
Query: 56 GRRCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLR--DRTGVFPSNFVEEI 111
G+ R ++ Y A+ DE+ D I + ++EGW G ++ +TG+ P+N+VE I
Sbjct: 1 GKSFRAMYDYRAADDDEVSFKDGDTIVNVQTIDEGWMYGTVQRTGKTGMLPANYVEAI 58
Score = 44.2 bits (104), Expect = 1e-06
Identities = 19/58 (32%), Positives = 33/58 (56%), Gaps = 2/58 (3%)
Query: 144 GRRCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLR--DRTGVFPSNFVEEI 199
G+ R ++ Y A+ DE+ D I + ++EGW G ++ +TG+ P+N+VE I
Sbjct: 1 GKSFRAMYDYRAADDDEVSFKDGDTIVNVQTIDEGWMYGTVQRTGKTGMLPANYVEAI 58
Score = 32.3 bits (73), Expect = 0.022
Identities = 12/36 (33%), Positives = 20/36 (55%)
Query: 11 FDYTAQEADELTLRKGDLITGIRVQSGGWWEGLLVR 46
+DY A + DE++ + GD I ++ GW G + R
Sbjct: 8 YDYRAADDDEVSFKDGDTIVNVQTIDEGWMYGTVQR 43
>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 = 43.9 bits (104), Expect = 1e-06
Identities = 17/37 (45%), Positives = 23/37 (62%)
Query: 6 EASVEFDYTAQEADELTLRKGDLITGIRVQSGGWWEG 42
EA+ +FDYT + EL+ +KGD +T R S WW G
Sbjct: 1 EATAQFDYTGRSERELSFKKGDSLTLYRQVSDDWWRG 37
Score = 37.0 bits (86), Expect = 4e-04
Identities = 14/46 (30%), Positives = 24/46 (52%)
Query: 63 FSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFV 108
F YT + EL D + + +V + WWRG+L + G+ P ++
Sbjct: 6 FDYTGRSERELSFKKGDSLTLYRQVSDDWWRGQLNGQDGLVPHKYI 51
Score = 37.0 bits (86), Expect = 4e-04
Identities = 14/46 (30%), Positives = 24/46 (52%)
Query: 151 FSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFV 196
F YT + EL D + + +V + WWRG+L + G+ P ++
Sbjct: 6 FDYTGRSERELSFKKGDSLTLYRQVSDDWWRGQLNGQDGLVPHKYI 51
>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 = 44.2 bits (104), Expect = 1e-06
Identities = 19/58 (32%), Positives = 33/58 (56%), Gaps = 2/58 (3%)
Query: 56 GRRCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLR--DRTGVFPSNFVEEI 111
G+R R ++ Y A+ DE+ D I + ++++GW G + TG+ P+N+VE I
Sbjct: 2 GKRYRAVYDYNAADEDEVSFQDGDTIVNVQQIDDGWMYGTVERTGDTGMLPANYVEAI 59
Score = 44.2 bits (104), Expect = 1e-06
Identities = 19/58 (32%), Positives = 33/58 (56%), Gaps = 2/58 (3%)
Query: 144 GRRCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLR--DRTGVFPSNFVEEI 199
G+R R ++ Y A+ DE+ D I + ++++GW G + TG+ P+N+VE I
Sbjct: 2 GKRYRAVYDYNAADEDEVSFQDGDTIVNVQQIDDGWMYGTVERTGDTGMLPANYVEAI 59
Score = 30.4 bits (68), Expect = 0.10
Identities = 12/36 (33%), Positives = 20/36 (55%)
Query: 11 FDYTAQEADELTLRKGDLITGIRVQSGGWWEGLLVR 46
+DY A + DE++ + GD I ++ GW G + R
Sbjct: 9 YDYNAADEDEVSFQDGDTIVNVQQIDDGWMYGTVER 44
>gnl|CDD|212930 cd11997, SH3_PACSIN3, Src homology 3 domain of Protein kinase C and
Casein kinase Substrate in Neurons 3 (PACSIN3). PACSIN
3 or Syndapin III (Synaptic dynamin-associated protein
III) is expressed ubiquitously and regulates glucose
uptake in adipocytes through its role in GLUT1
trafficking. It also modulates the subcellular
localization and stimulus-specific function of the
cation channel TRPV4. PACSINs act as regulators of
cytoskeletal and membrane dynamics. Vetebrates harbor
three isoforms with distinct expression patterns and
specific functions. PACSINs contain an N-terminal F-BAR
domain and a C-terminal SH3 domain. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 56
Score = 43.8 bits (103), Expect = 1e-06
Identities = 23/56 (41%), Positives = 34/56 (60%), Gaps = 2/56 (3%)
Query: 56 GRRCRVLFSYTPANADELELHV-NDVIDVLSEVEEGWWRGRLRD-RTGVFPSNFVE 109
G R R L+ YT ADEL +++ + E E+GW +GRL R G++P+N+VE
Sbjct: 1 GVRVRALYDYTGQEADELSFKAGEELLKIGEEDEQGWCKGRLLSGRIGLYPANYVE 56
Score = 43.8 bits (103), Expect = 1e-06
Identities = 23/56 (41%), Positives = 34/56 (60%), Gaps = 2/56 (3%)
Query: 144 GRRCRVLFSYTPANADELELHV-NDVIDVLSEVEEGWWRGRLRD-RTGVFPSNFVE 197
G R R L+ YT ADEL +++ + E E+GW +GRL R G++P+N+VE
Sbjct: 1 GVRVRALYDYTGQEADELSFKAGEELLKIGEEDEQGWCKGRLLSGRIGLYPANYVE 56
>gnl|CDD|212716 cd11782, SH3_Sorbs_2, Second Src Homology 3 domain of Sorbin and
SH3 domain containing (Sorbs) proteins and similar
domains. This family, also called the vinexin family,
is composed predominantly of adaptor proteins containing
one sorbin homology (SoHo) and three SH3 domains.
Members include the second SH3 domains of Sorbs1 (or
ponsin), Sorbs2 (or ArgBP2), Vinexin (or Sorbs3), and
similar domains. They are involved in the regulation of
cytoskeletal organization, cell adhesion, and growth
factor signaling. Members of this family bind multiple
partners including signaling molecules like c-Abl,
c-Arg, Sos, and c-Cbl, as well as cytoskeletal molecules
such as vinculin and afadin. They may have overlapping
functions. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate affinity
and selectivity, preferentially to PxxP motifs. They
play versatile and diverse roles in the cell including
the regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 53
Score = 43.9 bits (104), Expect = 1e-06
Identities = 16/50 (32%), Positives = 27/50 (54%)
Query: 60 RVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVE 109
R +++ EL DVI + V+E W+ GR+ R G+FP ++V+
Sbjct: 3 RAKYNFNADTGVELSFRKGDVITLTRRVDENWYEGRIGGRQGIFPVSYVQ 52
Score = 43.9 bits (104), Expect = 1e-06
Identities = 16/50 (32%), Positives = 27/50 (54%)
Query: 148 RVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVE 197
R +++ EL DVI + V+E W+ GR+ R G+FP ++V+
Sbjct: 3 RAKYNFNADTGVELSFRKGDVITLTRRVDENWYEGRIGGRQGIFPVSYVQ 52
Score = 37.7 bits (88), Expect = 3e-04
Identities = 15/37 (40%), Positives = 22/37 (59%)
Query: 6 EASVEFDYTAQEADELTLRKGDLITGIRVQSGGWWEG 42
EA ++++ A EL+ RKGD+IT R W+EG
Sbjct: 1 EARAKYNFNADTGVELSFRKGDVITLTRRVDENWYEG 37
>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 = 43.7 bits (103), Expect = 2e-06
Identities = 19/51 (37%), Positives = 27/51 (52%)
Query: 60 RVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVEE 110
+ L+ Y A +EL ND I + V++ WW G G+FPSN+VE
Sbjct: 3 KALYDYDAAEDNELSFFENDKIINIEFVDDDWWLGECHGSRGLFPSNYVEL 53
Score = 43.7 bits (103), Expect = 2e-06
Identities = 19/51 (37%), Positives = 27/51 (52%)
Query: 148 RVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVEE 198
+ L+ Y A +EL ND I + V++ WW G G+FPSN+VE
Sbjct: 3 KALYDYDAAEDNELSFFENDKIINIEFVDDDWWLGECHGSRGLFPSNYVEL 53
Score = 34.4 bits (79), Expect = 0.003
Identities = 13/36 (36%), Positives = 17/36 (47%)
Query: 7 ASVEFDYTAQEADELTLRKGDLITGIRVQSGGWWEG 42
A +DY A E +EL+ + D I I WW G
Sbjct: 2 AKALYDYDAAEDNELSFFENDKIINIEFVDDDWWLG 37
>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 = 43.8 bits (104), Expect = 2e-06
Identities = 19/53 (35%), Positives = 26/53 (49%), Gaps = 3/53 (5%)
Query: 58 RCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLR---DRTGVFPSNF 107
R R L+ N DEL ++I V E ++ WW G + R GVFP +F
Sbjct: 1 RVRALYDCQADNDDELTFSEGEIIVVTGEEDDEWWEGHIEGDPSRRGVFPVSF 53
Score = 43.8 bits (104), Expect = 2e-06
Identities = 19/53 (35%), Positives = 26/53 (49%), Gaps = 3/53 (5%)
Query: 146 RCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLR---DRTGVFPSNF 195
R R L+ N DEL ++I V E ++ WW G + R GVFP +F
Sbjct: 1 RVRALYDCQADNDDELTFSEGEIIVVTGEEDDEWWEGHIEGDPSRRGVFPVSF 53
Score = 31.5 bits (72), Expect = 0.034
Identities = 15/48 (31%), Positives = 21/48 (43%), Gaps = 7/48 (14%)
Query: 11 FDYTAQEADELTLRKGDLITGIRVQSGGWWEGLLVRERQAVTEQPGRR 58
+D A DELT +G++I + WWEG + P RR
Sbjct: 6 YDCQADNDDELTFSEGEIIVVTGEEDDEWWEGH-------IEGDPSRR 46
>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 = 43.8 bits (103), Expect = 2e-06
Identities = 18/50 (36%), Positives = 29/50 (58%)
Query: 62 LFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVEEI 111
++ YT DEL +I V+ + ++GW+ G + TG+FP N+VE I
Sbjct: 8 IYDYTKDKEDELSFQEGAIIYVIKKNDDGWYEGVMNGVTGLFPGNYVESI 57
Score = 43.8 bits (103), Expect = 2e-06
Identities = 18/50 (36%), Positives = 29/50 (58%)
Query: 150 LFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVEEI 199
++ YT DEL +I V+ + ++GW+ G + TG+FP N+VE I
Sbjct: 8 IYDYTKDKEDELSFQEGAIIYVIKKNDDGWYEGVMNGVTGLFPGNYVESI 57
Score = 35.4 bits (81), Expect = 0.002
Identities = 13/34 (38%), Positives = 23/34 (67%)
Query: 11 FDYTAQEADELTLRKGDLITGIRVQSGGWWEGLL 44
+DYT + DEL+ ++G +I I+ GW+EG++
Sbjct: 9 YDYTKDKEDELSFQEGAIIYVIKKNDDGWYEGVM 42
>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 = 43.6 bits (103), Expect = 2e-06
Identities = 19/53 (35%), Positives = 31/53 (58%), Gaps = 2/53 (3%)
Query: 58 RCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRL-RDRT-GVFPSNFV 108
+ + ++S+ +L D+I+VLS + WW G+L R+ G+FPSNFV
Sbjct: 1 KVKAVYSWAGETEGDLGFLEGDLIEVLSIGDGSWWSGKLRRNGAEGIFPSNFV 53
Score = 43.6 bits (103), Expect = 2e-06
Identities = 19/53 (35%), Positives = 31/53 (58%), Gaps = 2/53 (3%)
Query: 146 RCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRL-RDRT-GVFPSNFV 196
+ + ++S+ +L D+I+VLS + WW G+L R+ G+FPSNFV
Sbjct: 1 KVKAVYSWAGETEGDLGFLEGDLIEVLSIGDGSWWSGKLRRNGAEGIFPSNFV 53
Score = 27.1 bits (60), Expect = 1.5
Identities = 11/42 (26%), Positives = 18/42 (42%)
Query: 7 ASVEFDYTAQEADELTLRKGDLITGIRVQSGGWWEGLLVRER 48
+ + + +L +GDLI + + G WW G L R
Sbjct: 2 VKAVYSWAGETEGDLGFLEGDLIEVLSIGDGSWWSGKLRRNG 43
>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 = 43.6 bits (103), Expect = 2e-06
Identities = 19/49 (38%), Positives = 27/49 (55%), Gaps = 1/49 (2%)
Query: 62 LFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVEE 110
L+ Y +L + DVI V + + WW G + DRTG+FPSN+V
Sbjct: 5 LYPYESNEPGDLTFNAGDVILVTKK-DGEWWTGTIGDRTGIFPSNYVRP 52
Score = 43.6 bits (103), Expect = 2e-06
Identities = 19/49 (38%), Positives = 27/49 (55%), Gaps = 1/49 (2%)
Query: 150 LFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVEE 198
L+ Y +L + DVI V + + WW G + DRTG+FPSN+V
Sbjct: 5 LYPYESNEPGDLTFNAGDVILVTKK-DGEWWTGTIGDRTGIFPSNYVRP 52
>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 = 43.7 bits (103), Expect = 2e-06
Identities = 21/50 (42%), Positives = 29/50 (58%), Gaps = 1/50 (2%)
Query: 62 LFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRD-RTGVFPSNFVEE 110
L+ YTP NA +L+L + +L E WWR R ++ R G PSN+V E
Sbjct: 6 LYDYTPMNAQDLQLRKGEEYVILEESNLPWWRARDKNGREGYIPSNYVTE 55
Score = 43.7 bits (103), Expect = 2e-06
Identities = 21/50 (42%), Positives = 29/50 (58%), Gaps = 1/50 (2%)
Query: 150 LFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRD-RTGVFPSNFVEE 198
L+ YTP NA +L+L + +L E WWR R ++ R G PSN+V E
Sbjct: 6 LYDYTPMNAQDLQLRKGEEYVILEESNLPWWRARDKNGREGYIPSNYVTE 55
>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 = 43.4 bits (102), Expect = 2e-06
Identities = 23/56 (41%), Positives = 32/56 (57%), Gaps = 4/56 (7%)
Query: 60 RVLFSYTPANADELELHVNDVIDVL----SEVEEGWWRGRLRDRTGVFPSNFVEEI 111
R L+SYT + +EL +I +L V++G+WRG R GVFPS VEE+
Sbjct: 3 RALYSYTGQSPEELSFPEGALIRLLPRAQDGVDDGFWRGEFGGRVGVFPSLLVEEL 58
Score = 43.4 bits (102), Expect = 2e-06
Identities = 23/56 (41%), Positives = 32/56 (57%), Gaps = 4/56 (7%)
Query: 148 RVLFSYTPANADELELHVNDVIDVL----SEVEEGWWRGRLRDRTGVFPSNFVEEI 199
R L+SYT + +EL +I +L V++G+WRG R GVFPS VEE+
Sbjct: 3 RALYSYTGQSPEELSFPEGALIRLLPRAQDGVDDGFWRGEFGGRVGVFPSLLVEEL 58
>gnl|CDD|212764 cd11830, SH3_VAV_2, C-terminal (or second) Src homology 3 domain of
VAV proteins. VAV proteins function both as cytoplasmic
guanine nucleotide exchange factors (GEFs) for Rho
GTPases and scaffold proteins and they play important
roles in cell signaling by coupling cell surface
receptors to various effector functions. They play key
roles in processes that require cytoskeletal
reorganization including immune synapse formation,
phagocytosis, cell spreading, and platelet aggregation,
among others. Vertebrates have three VAV proteins (VAV1,
VAV2, and VAV3). VAV proteins contain several domains
that enable their function: N-terminal calponin homology
(CH), acidic, RhoGEF (also called Dbl-homologous or DH),
Pleckstrin Homology (PH), C1 (zinc finger), SH2, and two
SH3 domains. The SH3 domain of VAV is involved in the
localization of proteins to specific sites within the
cell, by interacting with proline-rich sequences within
target proteins. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP motifs.
They play versatile and diverse roles in the cell
including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 54
Score = 43.4 bits (102), Expect = 2e-06
Identities = 18/40 (45%), Positives = 26/40 (65%), Gaps = 1/40 (2%)
Query: 72 ELELHVNDVIDVLSEV-EEGWWRGRLRDRTGVFPSNFVEE 110
EL L DV+ + ++ ++GWWRG + R G FPS +VEE
Sbjct: 15 ELSLKEGDVVKIYNKKGQQGWWRGEINGRIGWFPSTYVEE 54
Score = 43.4 bits (102), Expect = 2e-06
Identities = 18/40 (45%), Positives = 26/40 (65%), Gaps = 1/40 (2%)
Query: 160 ELELHVNDVIDVLSEV-EEGWWRGRLRDRTGVFPSNFVEE 198
EL L DV+ + ++ ++GWWRG + R G FPS +VEE
Sbjct: 15 ELSLKEGDVVKIYNKKGQQGWWRGEINGRIGWFPSTYVEE 54
Score = 31.1 bits (70), Expect = 0.053
Identities = 12/37 (32%), Positives = 22/37 (59%), Gaps = 1/37 (2%)
Query: 7 ASVEFDYTAQEADELTLRKGDLITGI-RVQSGGWWEG 42
A +D+ A++ EL+L++GD++ + GWW G
Sbjct: 2 AKARYDFCARDMRELSLKEGDVVKIYNKKGQQGWWRG 38
>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 = 43.3 bits (102), Expect = 2e-06
Identities = 17/50 (34%), Positives = 31/50 (62%), Gaps = 4/50 (8%)
Query: 62 LFSYTPANADELELHVNDVIDVLSEVEEGWWRG---RLRDRTGVFPSNFV 108
+++Y DEL L + D + +L E EGW+RG R + + G+FP++++
Sbjct: 5 IYNYDARGPDELSLQIGDTVHIL-ETYEGWYRGYTLRKKSKKGIFPASYI 53
Score = 43.3 bits (102), Expect = 2e-06
Identities = 17/50 (34%), Positives = 31/50 (62%), Gaps = 4/50 (8%)
Query: 150 LFSYTPANADELELHVNDVIDVLSEVEEGWWRG---RLRDRTGVFPSNFV 196
+++Y DEL L + D + +L E EGW+RG R + + G+FP++++
Sbjct: 5 IYNYDARGPDELSLQIGDTVHIL-ETYEGWYRGYTLRKKSKKGIFPASYI 53
Score = 27.5 bits (61), Expect = 1.2
Identities = 13/38 (34%), Positives = 23/38 (60%), Gaps = 1/38 (2%)
Query: 11 FDYTAQEADELTLRKGDLITGIRVQSGGWWEGLLVRER 48
++Y A+ DEL+L+ GD + I GW+ G +R++
Sbjct: 6 YNYDARGPDELSLQIGDTVH-ILETYEGWYRGYTLRKK 42
>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 = 43.4 bits (103), Expect = 2e-06
Identities = 15/51 (29%), Positives = 27/51 (52%)
Query: 60 RVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVEE 110
+ Y DE+ L +V++VL + + GWW R D+ G P++++E
Sbjct: 3 VAIADYEAQGDDEISLQEGEVVEVLEKNDSGWWYVRKGDKEGWVPASYLEP 53
Score = 43.4 bits (103), Expect = 2e-06
Identities = 15/51 (29%), Positives = 27/51 (52%)
Query: 148 RVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVEE 198
+ Y DE+ L +V++VL + + GWW R D+ G P++++E
Sbjct: 3 VAIADYEAQGDDEISLQEGEVVEVLEKNDSGWWYVRKGDKEGWVPASYLEP 53
Score = 37.2 bits (87), Expect = 4e-04
Identities = 11/29 (37%), Positives = 19/29 (65%)
Query: 12 DYTAQEADELTLRKGDLITGIRVQSGGWW 40
DY AQ DE++L++G+++ + GWW
Sbjct: 7 DYEAQGDDEISLQEGEVVEVLEKNDSGWW 35
>gnl|CDD|212747 cd11813, SH3_SGSM3, Src Homology 3 domain of Small G protein
Signaling Modulator 3. SGSM3 is also called
Merlin-associated protein (MAP), RUN and SH3
domain-containing protein (RUSC3), RUN and TBC1
domain-containing protein 3 (RUTBC3), Rab
GTPase-activating protein 5 (RabGAP5), or Rab GAP-like
protein (RabGAPLP). It is expressed ubiquitously and
functions as a regulator of small G protein RAP- and
RAB-mediated neuronal signaling. It is involved in
modulating NGF-mediated neurite outgrowth and
differentiation. It also interacts with the tumor
suppressor merlin and may play a role in the
merlin-associated suppression of cell growth. SGSM3
contains TBC, SH3, and RUN domains. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 53
Score = 43.3 bits (102), Expect = 2e-06
Identities = 19/52 (36%), Positives = 28/52 (53%)
Query: 58 RCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVE 109
R + L + + DEL ND+I ++S+ +E W G L G FP+ FVE
Sbjct: 1 RAKALLDFERHDDDELGFRKNDIITIISQKDEHCWVGELNGLRGWFPAKFVE 52
Score = 43.3 bits (102), Expect = 2e-06
Identities = 19/52 (36%), Positives = 28/52 (53%)
Query: 146 RCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVE 197
R + L + + DEL ND+I ++S+ +E W G L G FP+ FVE
Sbjct: 1 RAKALLDFERHDDDELGFRKNDIITIISQKDEHCWVGELNGLRGWFPAKFVE 52
Score = 24.8 bits (54), Expect = 8.9
Identities = 13/33 (39%), Positives = 17/33 (51%)
Query: 12 DYTAQEADELTLRKGDLITGIRVQSGGWWEGLL 44
D+ + DEL RK D+IT I + W G L
Sbjct: 7 DFERHDDDELGFRKNDIITIISQKDEHCWVGEL 39
>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 = 43.1 bits (102), Expect = 3e-06
Identities = 16/52 (30%), Positives = 30/52 (57%)
Query: 59 CRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVEE 110
R L+ + +A EL L D+I + ++++ W+ G R G+FP+++VE
Sbjct: 2 ARALYPFKAQSAKELSLKKGDIIYIRRQIDKNWYEGEHNGRVGIFPASYVEI 53
Score = 43.1 bits (102), Expect = 3e-06
Identities = 16/52 (30%), Positives = 30/52 (57%)
Query: 147 CRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVEE 198
R L+ + +A EL L D+I + ++++ W+ G R G+FP+++VE
Sbjct: 2 ARALYPFKAQSAKELSLKKGDIIYIRRQIDKNWYEGEHNGRVGIFPASYVEI 53
Score = 39.2 bits (92), Expect = 6e-05
Identities = 15/37 (40%), Positives = 22/37 (59%)
Query: 6 EASVEFDYTAQEADELTLRKGDLITGIRVQSGGWWEG 42
+A + + AQ A EL+L+KGD+I R W+EG
Sbjct: 1 KARALYPFKAQSAKELSLKKGDIIYIRRQIDKNWYEG 37
>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 = 43.1 bits (102), Expect = 3e-06
Identities = 17/50 (34%), Positives = 27/50 (54%)
Query: 60 RVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVE 109
VL+ YT DEL + DV+ V+ + E+GWW + G+ P ++E
Sbjct: 3 SVLYDYTAQEDDELSISKGDVVAVIEKGEDGWWTVERNGQKGLVPGTYLE 52
Score = 43.1 bits (102), Expect = 3e-06
Identities = 17/50 (34%), Positives = 27/50 (54%)
Query: 148 RVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVE 197
VL+ YT DEL + DV+ V+ + E+GWW + G+ P ++E
Sbjct: 3 SVLYDYTAQEDDELSISKGDVVAVIEKGEDGWWTVERNGQKGLVPGTYLE 52
Score = 42.0 bits (99), Expect = 7e-06
Identities = 18/35 (51%), Positives = 24/35 (68%)
Query: 6 EASVEFDYTAQEADELTLRKGDLITGIRVQSGGWW 40
+ SV +DYTAQE DEL++ KGD++ I GWW
Sbjct: 1 KYSVLYDYTAQEDDELSISKGDVVAVIEKGEDGWW 35
>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 = 43.1 bits (102), Expect = 3e-06
Identities = 15/53 (28%), Positives = 28/53 (52%), Gaps = 2/53 (3%)
Query: 59 CRVLFSYTPANADELELHVNDVIDVLSEV-EEGWWRGR-LRDRTGVFPSNFVE 109
C+VL+SY DEL + + ++V+ + +GW + R G P N+++
Sbjct: 4 CKVLYSYEAQRPDELTITEGEELEVIEDGDGDGWVKARNKSGEVGYVPENYLQ 56
Score = 43.1 bits (102), Expect = 3e-06
Identities = 15/53 (28%), Positives = 28/53 (52%), Gaps = 2/53 (3%)
Query: 147 CRVLFSYTPANADELELHVNDVIDVLSEV-EEGWWRGR-LRDRTGVFPSNFVE 197
C+VL+SY DEL + + ++V+ + +GW + R G P N+++
Sbjct: 4 CKVLYSYEAQRPDELTITEGEELEVIEDGDGDGWVKARNKSGEVGYVPENYLQ 56
Score = 25.0 bits (55), Expect = 8.6
Identities = 12/37 (32%), Positives = 18/37 (48%)
Query: 4 VIEASVEFDYTAQEADELTLRKGDLITGIRVQSGGWW 40
+ V + Y AQ DELT+ +G+ + I G W
Sbjct: 1 PVTCKVLYSYEAQRPDELTITEGEELEVIEDGDGDGW 37
>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 = 43.2 bits (102), Expect = 3e-06
Identities = 19/53 (35%), Positives = 31/53 (58%), Gaps = 1/53 (1%)
Query: 58 RCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRG-RLRDRTGVFPSNFVE 109
R VL+ Y +E+EL +++ + V+E WW G + +G+FPSN+VE
Sbjct: 1 RAVVLYDYEKDEDNEIELVEGEIVTNIEMVDEDWWMGTNSKGESGLFPSNYVE 53
Score = 43.2 bits (102), Expect = 3e-06
Identities = 19/53 (35%), Positives = 31/53 (58%), Gaps = 1/53 (1%)
Query: 146 RCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRG-RLRDRTGVFPSNFVE 197
R VL+ Y +E+EL +++ + V+E WW G + +G+FPSN+VE
Sbjct: 1 RAVVLYDYEKDEDNEIELVEGEIVTNIEMVDEDWWMGTNSKGESGLFPSNYVE 53
Score = 34.4 bits (79), Expect = 0.004
Identities = 13/36 (36%), Positives = 21/36 (58%)
Query: 7 ASVEFDYTAQEADELTLRKGDLITGIRVQSGGWWEG 42
A V +DY E +E+ L +G+++T I + WW G
Sbjct: 2 AVVLYDYEKDEDNEIELVEGEIVTNIEMVDEDWWMG 37
>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 = 42.8 bits (101), Expect = 3e-06
Identities = 21/42 (50%), Positives = 26/42 (61%)
Query: 64 SYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPS 105
SY+P E+ LH D + VLS E G+W G +R RTG FPS
Sbjct: 7 SYSPQEEGEISLHKGDRVKVLSIGEGGFWEGSVRGRTGWFPS 48
Score = 42.8 bits (101), Expect = 3e-06
Identities = 21/42 (50%), Positives = 26/42 (61%)
Query: 152 SYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPS 193
SY+P E+ LH D + VLS E G+W G +R RTG FPS
Sbjct: 7 SYSPQEEGEISLHKGDRVKVLSIGEGGFWEGSVRGRTGWFPS 48
Score = 34.3 bits (79), Expect = 0.004
Identities = 13/30 (43%), Positives = 20/30 (66%)
Query: 13 YTAQEADELTLRKGDLITGIRVQSGGWWEG 42
Y+ QE E++L KGD + + + GG+WEG
Sbjct: 8 YSPQEEGEISLHKGDRVKVLSIGEGGFWEG 37
>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 = 43.1 bits (101), Expect = 3e-06
Identities = 17/50 (34%), Positives = 28/50 (56%)
Query: 62 LFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVEEI 111
++ Y+ DEL +I V+ + ++GW+ G TG+FP N+VE I
Sbjct: 5 IYDYSKDKDDELSFMEGAIIYVIKKNDDGWYEGVCNGVTGLFPGNYVESI 54
Score = 43.1 bits (101), Expect = 3e-06
Identities = 17/50 (34%), Positives = 28/50 (56%)
Query: 150 LFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVEEI 199
++ Y+ DEL +I V+ + ++GW+ G TG+FP N+VE I
Sbjct: 5 IYDYSKDKDDELSFMEGAIIYVIKKNDDGWYEGVCNGVTGLFPGNYVESI 54
Score = 35.4 bits (81), Expect = 0.002
Identities = 12/33 (36%), Positives = 21/33 (63%)
Query: 11 FDYTAQEADELTLRKGDLITGIRVQSGGWWEGL 43
+DY+ + DEL+ +G +I I+ GW+EG+
Sbjct: 6 YDYSKDKDDELSFMEGAIIYVIKKNDDGWYEGV 38
>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 = 42.7 bits (101), Expect = 3e-06
Identities = 17/54 (31%), Positives = 25/54 (46%), Gaps = 2/54 (3%)
Query: 58 RCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRD-RTGVFPSNFVEE 110
L+ + + L D+I VL E +E WW G L G FP ++V+E
Sbjct: 1 TATALYPWRAKKENHLSFAKGDIITVL-EQQEMWWFGELEGGEEGWFPKSYVKE 53
Score = 42.7 bits (101), Expect = 3e-06
Identities = 17/54 (31%), Positives = 25/54 (46%), Gaps = 2/54 (3%)
Query: 146 RCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRD-RTGVFPSNFVEE 198
L+ + + L D+I VL E +E WW G L G FP ++V+E
Sbjct: 1 TATALYPWRAKKENHLSFAKGDIITVL-EQQEMWWFGELEGGEEGWFPKSYVKE 53
Score = 26.2 bits (58), Expect = 3.2
Identities = 13/42 (30%), Positives = 22/42 (52%), Gaps = 1/42 (2%)
Query: 7 ASVEFDYTAQEADELTLRKGDLITGIRVQSGGWWEGLLVRER 48
A+ + + A++ + L+ KGD+IT + Q WW G L
Sbjct: 2 ATALYPWRAKKENHLSFAKGDIIT-VLEQQEMWWFGELEGGE 42
>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 = 43.1 bits (101), Expect = 3e-06
Identities = 18/52 (34%), Positives = 28/52 (53%)
Query: 57 RRCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFV 108
R+ R L+ + +EL ++I VL + + WW+G G+FPSNFV
Sbjct: 2 RKVRALYDFEAVEDNELTFKHGEIIIVLDDSDANWWKGENHRGVGLFPSNFV 53
Score = 43.1 bits (101), Expect = 3e-06
Identities = 18/52 (34%), Positives = 28/52 (53%)
Query: 145 RRCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFV 196
R+ R L+ + +EL ++I VL + + WW+G G+FPSNFV
Sbjct: 2 RKVRALYDFEAVEDNELTFKHGEIIIVLDDSDANWWKGENHRGVGLFPSNFV 53
Score = 30.4 bits (68), Expect = 0.098
Identities = 11/32 (34%), Positives = 19/32 (59%)
Query: 11 FDYTAQEADELTLRKGDLITGIRVQSGGWWEG 42
+D+ A E +ELT + G++I + WW+G
Sbjct: 8 YDFEAVEDNELTFKHGEIIIVLDDSDANWWKG 39
>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 = 42.7 bits (101), Expect = 4e-06
Identities = 16/55 (29%), Positives = 29/55 (52%), Gaps = 5/55 (9%)
Query: 60 RVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRL-----RDRTGVFPSNFVE 109
+V+ +T ++L L V ++ V + GWW G L + + G FP+N+V+
Sbjct: 3 QVIAPFTATAENQLSLAVGQLVLVRKKSPSGWWEGELQARGKKRQIGWFPANYVK 57
Score = 42.7 bits (101), Expect = 4e-06
Identities = 16/55 (29%), Positives = 29/55 (52%), Gaps = 5/55 (9%)
Query: 148 RVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRL-----RDRTGVFPSNFVE 197
+V+ +T ++L L V ++ V + GWW G L + + G FP+N+V+
Sbjct: 3 QVIAPFTATAENQLSLAVGQLVLVRKKSPSGWWEGELQARGKKRQIGWFPANYVK 57
Score = 41.6 bits (98), Expect = 1e-05
Identities = 18/49 (36%), Positives = 27/49 (55%), Gaps = 5/49 (10%)
Query: 6 EASVEFDYTAQEADELTLRKGDLITGIRVQSG-GWWEGLLV---RERQA 50
A V +TA ++L+L G L+ +R +S GWWEG L ++RQ
Sbjct: 1 IAQVIAPFTATAENQLSLAVGQLVL-VRKKSPSGWWEGELQARGKKRQI 48
>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 = 42.4 bits (100), Expect = 4e-06
Identities = 18/47 (38%), Positives = 28/47 (59%)
Query: 62 LFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFV 108
L+ + + +EL DVI+VL ++ WW G +RD G FP++FV
Sbjct: 5 LWDHVTMDPEELGFKAGDVIEVLDMSDKDWWWGSIRDEEGWFPASFV 51
Score = 42.4 bits (100), Expect = 4e-06
Identities = 18/47 (38%), Positives = 28/47 (59%)
Query: 150 LFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFV 196
L+ + + +EL DVI+VL ++ WW G +RD G FP++FV
Sbjct: 5 LWDHVTMDPEELGFKAGDVIEVLDMSDKDWWWGSIRDEEGWFPASFV 51
Score = 28.1 bits (63), Expect = 0.71
Identities = 9/32 (28%), Positives = 17/32 (53%)
Query: 11 FDYTAQEADELTLRKGDLITGIRVQSGGWWEG 42
+D+ + +EL + GD+I + + WW G
Sbjct: 6 WDHVTMDPEELGFKAGDVIEVLDMSDKDWWWG 37
>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 = 42.5 bits (100), Expect = 5e-06
Identities = 17/53 (32%), Positives = 28/53 (52%), Gaps = 1/53 (1%)
Query: 60 RVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTG-VFPSNFVEEI 111
+ L+ Y +DEL +I +S+ GWW+G + FPSN+VE++
Sbjct: 3 KALYDYRAKRSDELSFCKGALIHNVSKETGGWWKGDYGGKVQHYFPSNYVEDV 55
Score = 42.5 bits (100), Expect = 5e-06
Identities = 17/53 (32%), Positives = 28/53 (52%), Gaps = 1/53 (1%)
Query: 148 RVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTG-VFPSNFVEEI 199
+ L+ Y +DEL +I +S+ GWW+G + FPSN+VE++
Sbjct: 3 KALYDYRAKRSDELSFCKGALIHNVSKETGGWWKGDYGGKVQHYFPSNYVEDV 55
Score = 41.0 bits (96), Expect = 2e-05
Identities = 15/32 (46%), Positives = 23/32 (71%)
Query: 11 FDYTAQEADELTLRKGDLITGIRVQSGGWWEG 42
+DY A+ +DEL+ KG LI + ++GGWW+G
Sbjct: 6 YDYRAKRSDELSFCKGALIHNVSKETGGWWKG 37
>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 = 42.3 bits (100), Expect = 5e-06
Identities = 17/58 (29%), Positives = 25/58 (43%), Gaps = 9/58 (15%)
Query: 62 LFSYTP--------ANADELELHVNDVIDVLSEV-EEGWWRGRLRDRTGVFPSNFVEE 110
LF Y P A +EL +I V + +G++ G + R G+ P N V E
Sbjct: 5 LFDYDPLTMSPNPDAAEEELPFKEGQLIKVYGDKDADGFYLGEINGRRGLVPCNMVSE 62
Score = 42.3 bits (100), Expect = 5e-06
Identities = 17/58 (29%), Positives = 25/58 (43%), Gaps = 9/58 (15%)
Query: 150 LFSYTP--------ANADELELHVNDVIDVLSEV-EEGWWRGRLRDRTGVFPSNFVEE 198
LF Y P A +EL +I V + +G++ G + R G+ P N V E
Sbjct: 5 LFDYDPLTMSPNPDAAEEELPFKEGQLIKVYGDKDADGFYLGEINGRRGLVPCNMVSE 62
>gnl|CDD|212835 cd11902, SH3_Nck2_2, Second Src Homology 3 domain of Nck2 adaptor
protein. Nck2 (also called Nckbeta or Growth factor
receptor-bound protein 4, Grb4) plays a crucial role in
connecting signaling pathways of tyrosine kinase
receptors and important effectors in actin dynamics and
cytoskeletal remodeling. It binds neuronal signaling
proteins such as ephrinB and Disabled-1 (Dab-1)
exclusively. Nck adaptor proteins regulate actin
cytoskeleton dynamics by linking proline-rich effector
molecules to protein tyrosine kinases and phosphorylated
signaling intermediates. They contain three SH3 domains
and a C-terminal SH2 domain. They function downstream of
the PDGFbeta receptor and are involved in Rho GTPase
signaling and actin dynamics. Vertebrates contain two
Nck adaptor proteins: Nck1 (also called Nckalpha) and
Nck2, which show partly overlapping functions but also
bind distinct targets. The second SH3 domain of Nck
appears to prefer ligands containing the APxxPxR motif.
SH3 domains are protein interaction domains that usually
bind to proline-rich ligands with moderate affinity and
selectivity, preferentially a PxxP motif. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 55
Score = 42.3 bits (99), Expect = 6e-06
Identities = 20/50 (40%), Positives = 27/50 (54%)
Query: 61 VLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVEE 110
V F+Y DEL L + V+ + +GWWRG + G FPSN+V E
Sbjct: 5 VKFAYVAEREDELSLVKGSRVTVMEKCSDGWWRGSYNGQIGWFPSNYVVE 54
Score = 42.3 bits (99), Expect = 6e-06
Identities = 20/50 (40%), Positives = 27/50 (54%)
Query: 149 VLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVEE 198
V F+Y DEL L + V+ + +GWWRG + G FPSN+V E
Sbjct: 5 VKFAYVAEREDELSLVKGSRVTVMEKCSDGWWRGSYNGQIGWFPSNYVVE 54
Score = 37.7 bits (87), Expect = 3e-04
Identities = 18/38 (47%), Positives = 23/38 (60%)
Query: 5 IEASVEFDYTAQEADELTLRKGDLITGIRVQSGGWWEG 42
I A V+F Y A+ DEL+L KG +T + S GWW G
Sbjct: 1 IPAFVKFAYVAEREDELSLVKGSRVTVMEKCSDGWWRG 38
>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 = 42.3 bits (99), Expect = 6e-06
Identities = 17/32 (53%), Positives = 19/32 (59%)
Query: 11 FDYTAQEADELTLRKGDLITGIRVQSGGWWEG 42
FDY AQ DELT K +I + Q GGWW G
Sbjct: 10 FDYKAQREDELTFTKNAIIQNVEKQEGGWWRG 41
Score = 41.9 bits (98), Expect = 8e-06
Identities = 22/53 (41%), Positives = 29/53 (54%), Gaps = 1/53 (1%)
Query: 60 RVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGV-FPSNFVEEI 111
+ LF Y DEL N +I + + E GWWRG + + FPSN+VEEI
Sbjct: 7 KALFDYKAQREDELTFTKNAIIQNVEKQEGGWWRGDYGGKKQLWFPSNYVEEI 59
Score = 41.9 bits (98), Expect = 8e-06
Identities = 22/53 (41%), Positives = 29/53 (54%), Gaps = 1/53 (1%)
Query: 148 RVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGV-FPSNFVEEI 199
+ LF Y DEL N +I + + E GWWRG + + FPSN+VEEI
Sbjct: 7 KALFDYKAQREDELTFTKNAIIQNVEKQEGGWWRGDYGGKKQLWFPSNYVEEI 59
>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 = 42.0 bits (99), Expect = 6e-06
Identities = 17/55 (30%), Positives = 31/55 (56%), Gaps = 4/55 (7%)
Query: 58 RCRVLFSYT--PANADELELHVNDVIDVLSEVEEGWWRGRLRD-RTGVFPSNFVE 109
R R L+ Y P + +EL ++++V S+ WW+ R + TG+ PSN+++
Sbjct: 1 RARALYPYDASPDDPNELSFEKGEILEV-SDTSGKWWQARKSNGETGICPSNYLQ 54
Score = 42.0 bits (99), Expect = 6e-06
Identities = 17/55 (30%), Positives = 31/55 (56%), Gaps = 4/55 (7%)
Query: 146 RCRVLFSYT--PANADELELHVNDVIDVLSEVEEGWWRGRLRD-RTGVFPSNFVE 197
R R L+ Y P + +EL ++++V S+ WW+ R + TG+ PSN+++
Sbjct: 1 RARALYPYDASPDDPNELSFEKGEILEV-SDTSGKWWQARKSNGETGICPSNYLQ 54
>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 = 42.0 bits (99), Expect = 7e-06
Identities = 16/46 (34%), Positives = 27/46 (58%)
Query: 62 LFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNF 107
L+ + +EL+ V D I +++ +E+GW G L+ R G+FP F
Sbjct: 5 LYRFQALEPNELDFEVGDRIRIIATLEDGWLEGELKGRRGIFPHRF 50
Score = 42.0 bits (99), Expect = 7e-06
Identities = 16/46 (34%), Positives = 27/46 (58%)
Query: 150 LFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNF 195
L+ + +EL+ V D I +++ +E+GW G L+ R G+FP F
Sbjct: 5 LYRFQALEPNELDFEVGDRIRIIATLEDGWLEGELKGRRGIFPHRF 50
Score = 24.7 bits (54), Expect = 9.3
Identities = 14/38 (36%), Positives = 17/38 (44%)
Query: 11 FDYTAQEADELTLRKGDLITGIRVQSGGWWEGLLVRER 48
+ + A E +EL GD I I GW EG L R
Sbjct: 6 YRFQALEPNELDFEVGDRIRIIATLEDGWLEGELKGRR 43
>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 = 42.3 bits (100), Expect = 8e-06
Identities = 23/61 (37%), Positives = 27/61 (44%), Gaps = 7/61 (11%)
Query: 58 RCRVLFSYTPANADELELHVNDVIDVL-----SEVEEGWWRGRLRDRT--GVFPSNFVEE 110
+ R YT + DEL DVI V+ E +EGW G GVFP NF E
Sbjct: 4 KVRATHDYTAEDTDELTFEKGDVILVIPFDDPEEQDEGWLMGVKESTGCRGVFPENFTER 63
Query: 111 I 111
I
Sbjct: 64 I 64
Score = 42.3 bits (100), Expect = 8e-06
Identities = 23/61 (37%), Positives = 27/61 (44%), Gaps = 7/61 (11%)
Query: 146 RCRVLFSYTPANADELELHVNDVIDVL-----SEVEEGWWRGRLRDRT--GVFPSNFVEE 198
+ R YT + DEL DVI V+ E +EGW G GVFP NF E
Sbjct: 4 KVRATHDYTAEDTDELTFEKGDVILVIPFDDPEEQDEGWLMGVKESTGCRGVFPENFTER 63
Query: 199 I 199
I
Sbjct: 64 I 64
>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 = 42.0 bits (99), Expect = 8e-06
Identities = 19/49 (38%), Positives = 22/49 (44%), Gaps = 3/49 (6%)
Query: 62 LFSYTPANADELELHVNDVIDVL---SEVEEGWWRGRLRDRTGVFPSNF 107
LF Y N DEL D + VL + E WW RL D+ G P N
Sbjct: 6 LFDYEAENGDELSFREGDELTVLRKGDDDETEWWWARLNDKEGYVPRNL 54
Score = 42.0 bits (99), Expect = 8e-06
Identities = 19/49 (38%), Positives = 22/49 (44%), Gaps = 3/49 (6%)
Query: 150 LFSYTPANADELELHVNDVIDVL---SEVEEGWWRGRLRDRTGVFPSNF 195
LF Y N DEL D + VL + E WW RL D+ G P N
Sbjct: 6 LFDYEAENGDELSFREGDELTVLRKGDDDETEWWWARLNDKEGYVPRNL 54
Score = 31.2 bits (71), Expect = 0.056
Identities = 12/23 (52%), Positives = 17/23 (73%)
Query: 11 FDYTAQEADELTLRKGDLITGIR 33
FDY A+ DEL+ R+GD +T +R
Sbjct: 7 FDYEAENGDELSFREGDELTVLR 29
>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 = 41.8 bits (98), Expect = 8e-06
Identities = 22/49 (44%), Positives = 28/49 (57%), Gaps = 2/49 (4%)
Query: 64 SYTPANADELELHVNDVIDVLSEVEEGWWRG-RLRD-RTGVFPSNFVEE 110
+YT DEL L DV+ VL +GW+ G RLRD G FPS+ +E
Sbjct: 7 AYTAKQPDELSLQQADVVLVLQTESDGWYYGERLRDGERGWFPSSCAKE 55
Score = 41.8 bits (98), Expect = 8e-06
Identities = 22/49 (44%), Positives = 28/49 (57%), Gaps = 2/49 (4%)
Query: 152 SYTPANADELELHVNDVIDVLSEVEEGWWRG-RLRD-RTGVFPSNFVEE 198
+YT DEL L DV+ VL +GW+ G RLRD G FPS+ +E
Sbjct: 7 AYTAKQPDELSLQQADVVLVLQTESDGWYYGERLRDGERGWFPSSCAKE 55
Score = 30.6 bits (69), Expect = 0.096
Identities = 13/35 (37%), Positives = 26/35 (74%)
Query: 13 YTAQEADELTLRKGDLITGIRVQSGGWWEGLLVRE 47
YTA++ DEL+L++ D++ ++ +S GW+ G +R+
Sbjct: 8 YTAKQPDELSLQQADVVLVLQTESDGWYYGERLRD 42
>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 = 41.8 bits (99), Expect = 9e-06
Identities = 16/51 (31%), Positives = 28/51 (54%), Gaps = 4/51 (7%)
Query: 61 VLFSYTPANADELELHVNDVIDVLSEVEEGWWRG---RLRDRTGVFPSNFV 108
++++ +L L V D + +L E EGW+RG R + G+FP ++V
Sbjct: 4 AIYNFQGDGEHQLSLQVGDTVQILEE-CEGWYRGFSLRNKSLKGIFPKSYV 53
Score = 41.8 bits (99), Expect = 9e-06
Identities = 16/51 (31%), Positives = 28/51 (54%), Gaps = 4/51 (7%)
Query: 149 VLFSYTPANADELELHVNDVIDVLSEVEEGWWRG---RLRDRTGVFPSNFV 196
++++ +L L V D + +L E EGW+RG R + G+FP ++V
Sbjct: 4 AIYNFQGDGEHQLSLQVGDTVQILEE-CEGWYRGFSLRNKSLKGIFPKSYV 53
>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 = 40.8 bits (96), Expect = 2e-05
Identities = 19/53 (35%), Positives = 30/53 (56%), Gaps = 2/53 (3%)
Query: 60 RVLFSYTPANADELELHVNDVIDVLSEVEEGWWRG-RLR-DRTGVFPSNFVEE 110
R L + P + DE+EL + D + V E ++ W G LR + G+FP+ +V E
Sbjct: 3 RALHKFIPRHEDEIELDIGDPVYVEQEADDLWCEGTNLRTGQRGIFPAAYVVE 55
Score = 40.8 bits (96), Expect = 2e-05
Identities = 19/53 (35%), Positives = 30/53 (56%), Gaps = 2/53 (3%)
Query: 148 RVLFSYTPANADELELHVNDVIDVLSEVEEGWWRG-RLR-DRTGVFPSNFVEE 198
R L + P + DE+EL + D + V E ++ W G LR + G+FP+ +V E
Sbjct: 3 RALHKFIPRHEDEIELDIGDPVYVEQEADDLWCEGTNLRTGQRGIFPAAYVVE 55
>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 = 41.1 bits (96), Expect = 2e-05
Identities = 18/49 (36%), Positives = 28/49 (57%), Gaps = 2/49 (4%)
Query: 62 LFSYTPANADELELHVNDVIDVLSEVEEGWWRGRL--RDRTGVFPSNFV 108
++ YTP DELEL ++ V ++GW++G + GVFP N+V
Sbjct: 5 IYPYTPRKEDELELRKGEMFLVFERCQDGWFKGTSMHTSKIGVFPGNYV 53
Score = 41.1 bits (96), Expect = 2e-05
Identities = 18/49 (36%), Positives = 28/49 (57%), Gaps = 2/49 (4%)
Query: 150 LFSYTPANADELELHVNDVIDVLSEVEEGWWRGRL--RDRTGVFPSNFV 196
++ YTP DELEL ++ V ++GW++G + GVFP N+V
Sbjct: 5 IYPYTPRKEDELELRKGEMFLVFERCQDGWFKGTSMHTSKIGVFPGNYV 53
Score = 29.2 bits (65), Expect = 0.29
Identities = 12/32 (37%), Positives = 19/32 (59%)
Query: 11 FDYTAQEADELTLRKGDLITGIRVQSGGWWEG 42
+ YT ++ DEL LRKG++ GW++G
Sbjct: 6 YPYTPRKEDELELRKGEMFLVFERCQDGWFKG 37
>gnl|CDD|212900 cd11967, SH3_SASH1, Src homology 3 domain of SAM And SH3 Domain
Containing Protein 1. SASH1 is a potential tumor
suppressor in breast and colon cancer. Its decreased
expression is associated with aggressive tumor growth,
metastasis, and poor prognosis. It is widely expressed
in normal tissues (except lymphocytes and dendritic
cells) and is localized in the nucleus and the
cytoplasm. SASH1 interacts with the oncoprotein
cortactin and is important in cell migration and
adhesion. It is a member of the SLY family of proteins,
which are adaptor proteins containing a central
conserved region with a bipartite nuclear localization
signal (NLS) as well as SAM (sterile alpha motif) 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 = 40.4 bits (94), Expect = 2e-05
Identities = 19/54 (35%), Positives = 31/54 (57%), Gaps = 2/54 (3%)
Query: 58 RCRVLFSYTPA--NADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVE 109
R RV +TP+ + D L+L D+ID++S+ G W G L ++ G F +V+
Sbjct: 2 RARVHTDFTPSPYDTDSLKLKKGDIIDIISKPPMGTWMGLLNNKVGTFKFIYVD 55
Score = 40.4 bits (94), Expect = 2e-05
Identities = 19/54 (35%), Positives = 31/54 (57%), Gaps = 2/54 (3%)
Query: 146 RCRVLFSYTPA--NADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVE 197
R RV +TP+ + D L+L D+ID++S+ G W G L ++ G F +V+
Sbjct: 2 RARVHTDFTPSPYDTDSLKLKKGDIIDIISKPPMGTWMGLLNNKVGTFKFIYVD 55
Score = 30.4 bits (68), Expect = 0.093
Identities = 17/40 (42%), Positives = 21/40 (52%), Gaps = 2/40 (5%)
Query: 7 ASVEFDYTAQ--EADELTLRKGDLITGIRVQSGGWWEGLL 44
A V D+T + D L L+KGD+I I G W GLL
Sbjct: 3 ARVHTDFTPSPYDTDSLKLKKGDIIDIISKPPMGTWMGLL 42
>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 = 40.4 bits (94), Expect = 3e-05
Identities = 16/48 (33%), Positives = 30/48 (62%), Gaps = 1/48 (2%)
Query: 62 LFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVE 109
L+ Y+ + +L + + I ++++ + WW G + DRTG+FPSN+V
Sbjct: 5 LYPYSSSEPGDLTFNEGEEI-LVTQKDGEWWTGSIEDRTGIFPSNYVR 51
Score = 40.4 bits (94), Expect = 3e-05
Identities = 16/48 (33%), Positives = 30/48 (62%), Gaps = 1/48 (2%)
Query: 150 LFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVE 197
L+ Y+ + +L + + I ++++ + WW G + DRTG+FPSN+V
Sbjct: 5 LYPYSSSEPGDLTFNEGEEI-LVTQKDGEWWTGSIEDRTGIFPSNYVR 51
>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 = 40.0 bits (94), Expect = 3e-05
Identities = 17/54 (31%), Positives = 32/54 (59%), Gaps = 2/54 (3%)
Query: 58 RCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLR--DRTGVFPSNFVE 109
R R ++ Y A+ DE+ DVI + +++GW G ++ ++G+ P+N+VE
Sbjct: 1 RYRAMYDYAAADDDEVSFQEGDVIINVEIIDDGWMEGTVQRTGQSGMLPANYVE 54
Score = 40.0 bits (94), Expect = 3e-05
Identities = 17/54 (31%), Positives = 32/54 (59%), Gaps = 2/54 (3%)
Query: 146 RCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLR--DRTGVFPSNFVE 197
R R ++ Y A+ DE+ DVI + +++GW G ++ ++G+ P+N+VE
Sbjct: 1 RYRAMYDYAAADDDEVSFQEGDVIINVEIIDDGWMEGTVQRTGQSGMLPANYVE 54
Score = 39.2 bits (92), Expect = 7e-05
Identities = 13/36 (36%), Positives = 23/36 (63%)
Query: 11 FDYTAQEADELTLRKGDLITGIRVQSGGWWEGLLVR 46
+DY A + DE++ ++GD+I + + GW EG + R
Sbjct: 6 YDYAAADDDEVSFQEGDVIINVEIIDDGWMEGTVQR 41
>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 = 40.0 bits (93), Expect = 3e-05
Identities = 18/47 (38%), Positives = 27/47 (57%), Gaps = 1/47 (2%)
Query: 62 LFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFV 108
+++Y +L DVI V + + WW G + D+TGVFPSN+V
Sbjct: 5 MYTYESNEQGDLTFQQGDVILVTKK-DGDWWTGTVGDKTGVFPSNYV 50
Score = 40.0 bits (93), Expect = 3e-05
Identities = 18/47 (38%), Positives = 27/47 (57%), Gaps = 1/47 (2%)
Query: 150 LFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFV 196
+++Y +L DVI V + + WW G + D+TGVFPSN+V
Sbjct: 5 MYTYESNEQGDLTFQQGDVILVTKK-DGDWWTGTVGDKTGVFPSNYV 50
Score = 30.7 bits (69), Expect = 0.078
Identities = 11/34 (32%), Positives = 20/34 (58%), Gaps = 1/34 (2%)
Query: 11 FDYTAQEADELTLRKGDLITGIRVQSGGWWEGLL 44
+ Y + E +LT ++GD+I + + G WW G +
Sbjct: 6 YTYESNEQGDLTFQQGDVILVTK-KDGDWWTGTV 38
>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 = 40.3 bits (95), Expect = 3e-05
Identities = 19/53 (35%), Positives = 32/53 (60%), Gaps = 2/53 (3%)
Query: 60 RVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLR--DRTGVFPSNFVEE 110
++ + P N DE+EL V D+I V +G+ +GR R +TG++PS V++
Sbjct: 3 VAIYPHKPRNHDEIELRVGDIIGVAGNHWDGYSKGRNRRTGKTGLYPSYKVKD 55
Score = 40.3 bits (95), Expect = 3e-05
Identities = 19/53 (35%), Positives = 32/53 (60%), Gaps = 2/53 (3%)
Query: 148 RVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLR--DRTGVFPSNFVEE 198
++ + P N DE+EL V D+I V +G+ +GR R +TG++PS V++
Sbjct: 3 VAIYPHKPRNHDEIELRVGDIIGVAGNHWDGYSKGRNRRTGKTGLYPSYKVKD 55
>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 = 39.7 bits (93), Expect = 4e-05
Identities = 22/51 (43%), Positives = 26/51 (50%), Gaps = 3/51 (5%)
Query: 61 VLFSYTPANADELELHVND---VIDVLSEVEEGWWRGRLRDRTGVFPSNFV 108
V+ YT DEL L V D VID+ E WWRG+ + G FPS V
Sbjct: 4 VIKRYTAQAPDELSLEVGDIVSVIDMPPPEESTWWRGKKGFQVGFFPSECV 54
Score = 39.7 bits (93), Expect = 4e-05
Identities = 22/51 (43%), Positives = 26/51 (50%), Gaps = 3/51 (5%)
Query: 149 VLFSYTPANADELELHVND---VIDVLSEVEEGWWRGRLRDRTGVFPSNFV 196
V+ YT DEL L V D VID+ E WWRG+ + G FPS V
Sbjct: 4 VIKRYTAQAPDELSLEVGDIVSVIDMPPPEESTWWRGKKGFQVGFFPSECV 54
Score = 32.4 bits (74), Expect = 0.021
Identities = 14/33 (42%), Positives = 20/33 (60%), Gaps = 3/33 (9%)
Query: 13 YTAQEADELTLRKGDLITGIRV---QSGGWWEG 42
YTAQ DEL+L GD+++ I + + WW G
Sbjct: 8 YTAQAPDELSLEVGDIVSVIDMPPPEESTWWRG 40
>gnl|CDD|212911 cd11978, SH3_VAV3_2, C-terminal (or second) Src homology 3 domain
of VAV3 protein. VAV3 is ubiquitously expressed and
functions as a phosphorylation-dependent guanine
nucleotide exchange factor (GEF) for RhoA, RhoG, and
Rac1. It has been implicated to function in the
hematopoietic, bone, cerebellar, and cardiovascular
systems. VAV3 is essential in axon guidance in neurons
that control blood pressure and respiration. It is
overexpressed in prostate cancer cells and it plays a
role in regulating androgen receptor transcriptional
activity. VAV proteins contain several domains that
enable their function: N-terminal calponin homology
(CH), acidic, RhoGEF (also called Dbl-homologous or DH),
Pleckstrin Homology (PH), C1 (zinc finger), SH2, and two
SH3 domains. The SH3 domain of VAV is involved in the
localization of proteins to specific sites within the
cell, by interacting with proline-rich sequences within
target proteins. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP motifs.
They play versatile and diverse roles in the cell
including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 56
Score = 40.0 bits (93), Expect = 4e-05
Identities = 18/49 (36%), Positives = 28/49 (57%), Gaps = 1/49 (2%)
Query: 63 FSYTPANADELELHVNDVIDVLSEV-EEGWWRGRLRDRTGVFPSNFVEE 110
+ + + EL L DV+ + +++ GWWRG + R G FPS +VEE
Sbjct: 7 YDFCARDMRELSLLKGDVVKIYTKMSTNGWWRGEVNGRVGWFPSTYVEE 55
Score = 40.0 bits (93), Expect = 4e-05
Identities = 18/49 (36%), Positives = 28/49 (57%), Gaps = 1/49 (2%)
Query: 151 FSYTPANADELELHVNDVIDVLSEV-EEGWWRGRLRDRTGVFPSNFVEE 198
+ + + EL L DV+ + +++ GWWRG + R G FPS +VEE
Sbjct: 7 YDFCARDMRELSLLKGDVVKIYTKMSTNGWWRGEVNGRVGWFPSTYVEE 55
Score = 30.8 bits (69), Expect = 0.069
Identities = 13/37 (35%), Positives = 23/37 (62%), Gaps = 1/37 (2%)
Query: 7 ASVEFDYTAQEADELTLRKGDLIT-GIRVQSGGWWEG 42
A +D+ A++ EL+L KGD++ ++ + GWW G
Sbjct: 3 AIARYDFCARDMRELSLLKGDVVKIYTKMSTNGWWRG 39
>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 = 39.8 bits (93), Expect = 4e-05
Identities = 15/39 (38%), Positives = 22/39 (56%)
Query: 4 VIEASVEFDYTAQEADELTLRKGDLITGIRVQSGGWWEG 42
+EA FDYT + A EL+ ++GD++ S WW G
Sbjct: 1 EVEAVACFDYTGRTAQELSFKRGDVLLLHSKASSDWWRG 39
Score = 31.7 bits (72), Expect = 0.034
Identities = 15/47 (31%), Positives = 21/47 (44%)
Query: 62 LFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFV 108
F YT A EL DV+ + S+ WWRG G+ P ++
Sbjct: 7 CFDYTGRTAQELSFKRGDVLLLHSKASSDWWRGEHNGMRGLIPHKYI 53
Score = 31.7 bits (72), Expect = 0.034
Identities = 15/47 (31%), Positives = 21/47 (44%)
Query: 150 LFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFV 196
F YT A EL DV+ + S+ WWRG G+ P ++
Sbjct: 7 CFDYTGRTAQELSFKRGDVLLLHSKASSDWWRGEHNGMRGLIPHKYI 53
>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 = 39.8 bits (93), Expect = 4e-05
Identities = 17/47 (36%), Positives = 29/47 (61%)
Query: 64 SYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVEE 110
+YT DEL L + I+V+ ++ +GWW R + TG FPS ++++
Sbjct: 7 AYTAVEEDELTLLEGEAIEVIHKLLDGWWVVRKGEVTGYFPSMYLQK 53
Score = 39.8 bits (93), Expect = 4e-05
Identities = 17/47 (36%), Positives = 29/47 (61%)
Query: 152 SYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVEE 198
+YT DEL L + I+V+ ++ +GWW R + TG FPS ++++
Sbjct: 7 AYTAVEEDELTLLEGEAIEVIHKLLDGWWVVRKGEVTGYFPSMYLQK 53
Score = 34.0 bits (78), Expect = 0.005
Identities = 15/29 (51%), Positives = 17/29 (58%)
Query: 12 DYTAQEADELTLRKGDLITGIRVQSGGWW 40
YTA E DELTL +G+ I I GWW
Sbjct: 7 AYTAVEEDELTLLEGEAIEVIHKLLDGWW 35
>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 = 40.0 bits (94), Expect = 4e-05
Identities = 21/62 (33%), Positives = 30/62 (48%), Gaps = 9/62 (14%)
Query: 58 RCRVLFSYTPAN-------ADELELHVNDVIDVLSEV-EEGWWRGRLRD-RTGVFPSNFV 108
L+ Y P +EL H DV+ V + E+G++ G L R G+ PSNFV
Sbjct: 1 LMVALYDYNPETMSPNDDPEEELSFHAGDVVRVYGPMDEDGFYYGELEGGRKGLVPSNFV 60
Query: 109 EE 110
+E
Sbjct: 61 QE 62
Score = 40.0 bits (94), Expect = 4e-05
Identities = 21/62 (33%), Positives = 30/62 (48%), Gaps = 9/62 (14%)
Query: 146 RCRVLFSYTPAN-------ADELELHVNDVIDVLSEV-EEGWWRGRLRD-RTGVFPSNFV 196
L+ Y P +EL H DV+ V + E+G++ G L R G+ PSNFV
Sbjct: 1 LMVALYDYNPETMSPNDDPEEELSFHAGDVVRVYGPMDEDGFYYGELEGGRKGLVPSNFV 60
Query: 197 EE 198
+E
Sbjct: 61 QE 62
>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 = 39.9 bits (93), Expect = 4e-05
Identities = 16/52 (30%), Positives = 31/52 (59%)
Query: 58 RCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVE 109
R + L +Y N +L+ + DVI + +++E W+ G + +G+FP++ VE
Sbjct: 2 RAKALCNYRGHNPGDLKFNKGDVILLRRQLDENWYLGEINGVSGIFPASSVE 53
Score = 39.9 bits (93), Expect = 4e-05
Identities = 16/52 (30%), Positives = 31/52 (59%)
Query: 146 RCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVE 197
R + L +Y N +L+ + DVI + +++E W+ G + +G+FP++ VE
Sbjct: 2 RAKALCNYRGHNPGDLKFNKGDVILLRRQLDENWYLGEINGVSGIFPASSVE 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 = 5e-05
Identities = 12/50 (24%), Positives = 26/50 (52%)
Query: 60 RVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVE 109
+ L++Y +L D+I + ++E W+ G + G FP+++V+
Sbjct: 3 KALYNYEGKEPGDLSFKKGDIILLRKRIDENWYHGECNGKQGFFPASYVQ 52
Score = 39.7 bits (93), Expect = 5e-05
Identities = 12/50 (24%), Positives = 26/50 (52%)
Query: 148 RVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVE 197
+ L++Y +L D+I + ++E W+ G + G FP+++V+
Sbjct: 3 KALYNYEGKEPGDLSFKKGDIILLRKRIDENWYHGECNGKQGFFPASYVQ 52
Score = 28.9 bits (65), Expect = 0.30
Identities = 9/32 (28%), Positives = 18/32 (56%)
Query: 11 FDYTAQEADELTLRKGDLITGIRVQSGGWWEG 42
++Y +E +L+ +KGD+I + W+ G
Sbjct: 6 YNYEGKEPGDLSFKKGDIILLRKRIDENWYHG 37
>gnl|CDD|212887 cd11954, SH3_ASPP1, Src Homology 3 domain of Apoptosis Stimulating
of p53 protein 1. ASPP1, like ASPP2, activates the
apoptotic function of the p53 family of tumor
suppressors (p53, p63, and p73). In addition, it
functions in the cytoplasm to regulate the nuclear
localization of the transcriptional cofactors YAP and
TAZ by inihibiting their phosphorylation; YAP and TAZ
are important regulators of cell expansion,
differentiation, migration, and invasion. ASPP1 is
downregulated in breast tumors expressing wild-type p53.
It contains a proline-rich region, four ankyrin (ANK)
repeats, and an SH3 domain at its C-terminal half. The
SH3 domain and the ANK repeats of ASPP1 contribute to
the p53 binding site; they bind to the DNA binding
domain of p53. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP motifs.
They play versatile and diverse roles in the cell
including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 57
Score = 39.6 bits (92), Expect = 5e-05
Identities = 19/50 (38%), Positives = 24/50 (48%), Gaps = 3/50 (6%)
Query: 62 LFSYTPANADELELHVNDVIDVL---SEVEEGWWRGRLRDRTGVFPSNFV 108
L+ Y NADEL D I +L + E WW RL D+ G P N +
Sbjct: 6 LWDYEAQNADELSFQEGDAITILRRKDDSETEWWWARLNDKEGYVPKNLL 55
Score = 39.6 bits (92), Expect = 5e-05
Identities = 19/50 (38%), Positives = 24/50 (48%), Gaps = 3/50 (6%)
Query: 150 LFSYTPANADELELHVNDVIDVL---SEVEEGWWRGRLRDRTGVFPSNFV 196
L+ Y NADEL D I +L + E WW RL D+ G P N +
Sbjct: 6 LWDYEAQNADELSFQEGDAITILRRKDDSETEWWWARLNDKEGYVPKNLL 55
Score = 33.1 bits (75), Expect = 0.013
Identities = 17/41 (41%), Positives = 25/41 (60%), Gaps = 4/41 (9%)
Query: 11 FDYTAQEADELTLRKGDLITGIR----VQSGGWWEGLLVRE 47
+DY AQ ADEL+ ++GD IT +R ++ WW L +E
Sbjct: 7 WDYEAQNADELSFQEGDAITILRRKDDSETEWWWARLNDKE 47
>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 = 39.6 bits (92), Expect = 5e-05
Identities = 14/55 (25%), Positives = 28/55 (50%)
Query: 57 RRCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVEEI 111
R R F + EL L D++ + ++++ W+ G R G+FP +++E +
Sbjct: 1 RPARAKFDFKAQTLKELPLQKGDIVYIYKQIDQNWYEGEHHGRVGIFPRSYIELL 55
Score = 39.6 bits (92), Expect = 5e-05
Identities = 14/55 (25%), Positives = 28/55 (50%)
Query: 145 RRCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVEEI 199
R R F + EL L D++ + ++++ W+ G R G+FP +++E +
Sbjct: 1 RPARAKFDFKAQTLKELPLQKGDIVYIYKQIDQNWYEGEHHGRVGIFPRSYIELL 55
Score = 34.2 bits (78), Expect = 0.005
Identities = 14/37 (37%), Positives = 21/37 (56%)
Query: 6 EASVEFDYTAQEADELTLRKGDLITGIRVQSGGWWEG 42
A +FD+ AQ EL L+KGD++ + W+EG
Sbjct: 2 PARAKFDFKAQTLKELPLQKGDIVYIYKQIDQNWYEG 38
>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 = 39.6 bits (92), Expect = 6e-05
Identities = 15/50 (30%), Positives = 30/50 (60%)
Query: 60 RVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVE 109
R + Y ++ E+ L DV++V+ + E GWW +L+ + G P++++E
Sbjct: 3 RAIADYEKSSKSEMALKTGDVVEVVEKSENGWWFCQLKAKRGWVPASYLE 52
Score = 39.6 bits (92), Expect = 6e-05
Identities = 15/50 (30%), Positives = 30/50 (60%)
Query: 148 RVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVE 197
R + Y ++ E+ L DV++V+ + E GWW +L+ + G P++++E
Sbjct: 3 RAIADYEKSSKSEMALKTGDVVEVVEKSENGWWFCQLKAKRGWVPASYLE 52
Score = 26.5 bits (58), Expect = 2.5
Identities = 9/29 (31%), Positives = 14/29 (48%)
Query: 12 DYTAQEADELTLRKGDLITGIRVQSGGWW 40
DY E+ L+ GD++ + GWW
Sbjct: 7 DYEKSSKSEMALKTGDVVEVVEKSENGWW 35
>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 = 39.5 bits (92), Expect = 6e-05
Identities = 18/53 (33%), Positives = 27/53 (50%), Gaps = 2/53 (3%)
Query: 60 RVLFSYTPANADELELHVNDVIDVLSEV--EEGWWRGRLRDRTGVFPSNFVEE 110
R L+ + N DE+ + D+I V + E GW G + G FP N+VE+
Sbjct: 5 RALYPFEARNHDEMSFNAGDIIQVDEKTVGEPGWLYGSFQGNFGWFPCNYVEK 57
Score = 39.5 bits (92), Expect = 6e-05
Identities = 18/53 (33%), Positives = 27/53 (50%), Gaps = 2/53 (3%)
Query: 148 RVLFSYTPANADELELHVNDVIDVLSEV--EEGWWRGRLRDRTGVFPSNFVEE 198
R L+ + N DE+ + D+I V + E GW G + G FP N+VE+
Sbjct: 5 RALYPFEARNHDEMSFNAGDIIQVDEKTVGEPGWLYGSFQGNFGWFPCNYVEK 57
>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 = 39.2 bits (92), Expect = 7e-05
Identities = 15/42 (35%), Positives = 21/42 (50%)
Query: 64 SYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPS 105
+Y DEL + V++VL + + GWW R R G PS
Sbjct: 7 AYEAQKEDELSVPAGVVVEVLQKSDNGWWLIRYNGRAGYVPS 48
Score = 39.2 bits (92), Expect = 7e-05
Identities = 15/42 (35%), Positives = 21/42 (50%)
Query: 152 SYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPS 193
+Y DEL + V++VL + + GWW R R G PS
Sbjct: 7 AYEAQKEDELSVPAGVVVEVLQKSDNGWWLIRYNGRAGYVPS 48
Score = 31.9 bits (73), Expect = 0.023
Identities = 12/34 (35%), Positives = 20/34 (58%), Gaps = 3/34 (8%)
Query: 13 YTAQEADELTLRKGDLITGIRVQSGGWWEGLLVR 46
Y AQ+ DEL++ G ++ ++ GWW L+R
Sbjct: 8 YEAQKEDELSVPAGVVVEVLQKSDNGWW---LIR 38
>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 = 39.1 bits (91), Expect = 7e-05
Identities = 17/55 (30%), Positives = 30/55 (54%)
Query: 57 RRCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVEEI 111
+ R+ F + + EL L D++ + EV++ W G R G+FP+N+VE +
Sbjct: 1 KAARLKFDFQAQSPKELTLQKGDIVYIHKEVDKNWLEGEHHGRVGIFPANYVEVL 55
Score = 39.1 bits (91), Expect = 7e-05
Identities = 17/55 (30%), Positives = 30/55 (54%)
Query: 145 RRCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVEEI 199
+ R+ F + + EL L D++ + EV++ W G R G+FP+N+VE +
Sbjct: 1 KAARLKFDFQAQSPKELTLQKGDIVYIHKEVDKNWLEGEHHGRVGIFPANYVEVL 55
Score = 30.7 bits (69), Expect = 0.091
Identities = 15/36 (41%), Positives = 22/36 (61%)
Query: 7 ASVEFDYTAQEADELTLRKGDLITGIRVQSGGWWEG 42
A ++FD+ AQ ELTL+KGD++ + W EG
Sbjct: 3 ARLKFDFQAQSPKELTLQKGDIVYIHKEVDKNWLEG 38
>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 = 38.8 bits (90), Expect = 8e-05
Identities = 17/45 (37%), Positives = 29/45 (64%)
Query: 64 SYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFV 108
+Y+P E++L+ + + VLS E G+W G ++ RTG FP++ V
Sbjct: 8 AYSPQGEGEIQLNRGERVKVLSIGEGGFWEGTVKGRTGWFPADCV 52
Score = 38.8 bits (90), Expect = 8e-05
Identities = 17/45 (37%), Positives = 29/45 (64%)
Query: 152 SYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFV 196
+Y+P E++L+ + + VLS E G+W G ++ RTG FP++ V
Sbjct: 8 AYSPQGEGEIQLNRGERVKVLSIGEGGFWEGTVKGRTGWFPADCV 52
Score = 26.1 bits (57), Expect = 3.8
Identities = 10/30 (33%), Positives = 18/30 (60%)
Query: 13 YTAQEADELTLRKGDLITGIRVQSGGWWEG 42
Y+ Q E+ L +G+ + + + GG+WEG
Sbjct: 9 YSPQGEGEIQLNRGERVKVLSIGEGGFWEG 38
>gnl|CDD|212863 cd11930, SH3_SH3RF1_2, Second Src Homology 3 domain of SH3 domain
containing ring finger protein 1, an E3
ubiquitin-protein ligase. SH3RF1 is also called POSH
(Plenty of SH3s) or SH3MD2 (SH3 multiple domains protein
2). It is a scaffold protein that acts as an E3
ubiquitin-protein ligase. It plays a role in calcium
homeostasis through the control of the ubiquitin domain
protein Herp. It may also have a role in regulating
death receptor mediated and JNK mediated apoptosis.
SH3RF1 also enhances the ubiquitination of ROMK1
potassium channel resulting in its increased
endocytosis. It contains an N-terminal RING finger
domain and four SH3 domains. This model represents the
second SH3 domain, located C-terminal of the first SH3
domain at the N-terminal half, of SH3RF1. SH3 domains
are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 55
Score = 38.8 bits (90), Expect = 9e-05
Identities = 17/55 (30%), Positives = 31/55 (56%), Gaps = 4/55 (7%)
Query: 58 RCRVLFSY----TPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFV 108
+C+ L+ + A+ D L +D++ V+ V+E W G L D+ G+FP ++V
Sbjct: 1 QCKALYDFEVKDKEADKDCLPFAKDDILTVIRRVDENWAEGMLGDKIGIFPISYV 55
Score = 38.8 bits (90), Expect = 9e-05
Identities = 17/55 (30%), Positives = 31/55 (56%), Gaps = 4/55 (7%)
Query: 146 RCRVLFSY----TPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFV 196
+C+ L+ + A+ D L +D++ V+ V+E W G L D+ G+FP ++V
Sbjct: 1 QCKALYDFEVKDKEADKDCLPFAKDDILTVIRRVDENWAEGMLGDKIGIFPISYV 55
Score = 26.1 bits (57), Expect = 3.7
Identities = 15/41 (36%), Positives = 23/41 (56%), Gaps = 2/41 (4%)
Query: 6 EASVEFDYTAQEADE--LTLRKGDLITGIRVQSGGWWEGLL 44
+A +F+ +EAD+ L K D++T IR W EG+L
Sbjct: 3 KALYDFEVKDKEADKDCLPFAKDDILTVIRRVDENWAEGML 43
>gnl|CDD|212910 cd11977, SH3_VAV2_2, C-terminal (or second) Src homology 3 domain
of VAV2 protein. VAV2 is widely expressed and functions
as a guanine nucleotide exchange factor (GEF) for RhoA,
RhoB and RhoG and also activates Rac1 and Cdc42. It is
implicated in many cellular and physiological functions
including blood pressure control, eye development,
neurite outgrowth and branching, EGFR endocytosis and
degradation, and cell cluster morphology, among others.
It has been reported to associate with Nek3. VAV
proteins contain several domains that enable their
function: N-terminal calponin homology (CH), acidic,
RhoGEF (also called Dbl-homologous or DH), Pleckstrin
Homology (PH), C1 (zinc finger), SH2, and two SH3
domains. The SH3 domain of VAV is involved in the
localization of proteins to specific sites within the
cell, by interacting with proline-rich sequences within
target proteins. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP motifs.
They play versatile and diverse roles in the cell
including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 58
Score = 38.8 bits (90), Expect = 9e-05
Identities = 18/50 (36%), Positives = 29/50 (58%), Gaps = 2/50 (4%)
Query: 63 FSYTPANADELELHVNDVIDVLSEV--EEGWWRGRLRDRTGVFPSNFVEE 110
+++ + EL L DV+ + S + ++GWW+G R G FPS +VEE
Sbjct: 7 YNFAARDMRELSLREGDVVRIYSRIGGDQGWWKGETNGRIGWFPSTYVEE 56
Score = 38.8 bits (90), Expect = 9e-05
Identities = 18/50 (36%), Positives = 29/50 (58%), Gaps = 2/50 (4%)
Query: 151 FSYTPANADELELHVNDVIDVLSEV--EEGWWRGRLRDRTGVFPSNFVEE 198
+++ + EL L DV+ + S + ++GWW+G R G FPS +VEE
Sbjct: 7 YNFAARDMRELSLREGDVVRIYSRIGGDQGWWKGETNGRIGWFPSTYVEE 56
Score = 27.3 bits (60), Expect = 1.6
Identities = 13/38 (34%), Positives = 23/38 (60%), Gaps = 2/38 (5%)
Query: 7 ASVEFDYTAQEADELTLRKGDLITGIRVQSG--GWWEG 42
A +++ A++ EL+LR+GD++ G GWW+G
Sbjct: 3 AVARYNFAARDMRELSLREGDVVRIYSRIGGDQGWWKG 40
>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 = 38.4 bits (89), Expect = 1e-04
Identities = 15/50 (30%), Positives = 28/50 (56%)
Query: 60 RVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVE 109
+ L++Y +L+ D+I + +V+E W+ G + G FP+NFV+
Sbjct: 4 KALYNYEGKEPGDLKFSKGDIIILRRQVDENWYHGEVNGIHGFFPTNFVQ 53
Score = 38.4 bits (89), Expect = 1e-04
Identities = 15/50 (30%), Positives = 28/50 (56%)
Query: 148 RVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVE 197
+ L++Y +L+ D+I + +V+E W+ G + G FP+NFV+
Sbjct: 4 KALYNYEGKEPGDLKFSKGDIIILRRQVDENWYHGEVNGIHGFFPTNFVQ 53
>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 = 38.4 bits (89), Expect = 1e-04
Identities = 20/48 (41%), Positives = 25/48 (52%)
Query: 61 VLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFV 108
V+ SY P E+ LH D + VLS E G+W G R G FP+ V
Sbjct: 5 VVKSYQPQVEGEIPLHKGDRVKVLSIGEGGFWEGSARGHVGWFPAECV 52
Score = 38.4 bits (89), Expect = 1e-04
Identities = 20/48 (41%), Positives = 25/48 (52%)
Query: 149 VLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFV 196
V+ SY P E+ LH D + VLS E G+W G R G FP+ V
Sbjct: 5 VVKSYQPQVEGEIPLHKGDRVKVLSIGEGGFWEGSARGHVGWFPAECV 52
Score = 28.7 bits (64), Expect = 0.43
Identities = 12/30 (40%), Positives = 17/30 (56%)
Query: 13 YTAQEADELTLRKGDLITGIRVQSGGWWEG 42
Y Q E+ L KGD + + + GG+WEG
Sbjct: 9 YQPQVEGEIPLHKGDRVKVLSIGEGGFWEG 38
>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 = 38.4 bits (89), Expect = 1e-04
Identities = 21/54 (38%), Positives = 34/54 (62%), Gaps = 4/54 (7%)
Query: 60 RVLFSYTPANADELELHVNDVIDVLSEVEEGWWRG---RLRDRTGVFPSNFVEE 110
R +F + P + DELEL V+D + V +E ++ W+RG R +R G+FP+ + E
Sbjct: 3 RAVFRFIPRHEDELELDVDDPLLVEAEEDDYWYRGYNMRTGER-GIFPAFYAHE 55
Score = 38.4 bits (89), Expect = 1e-04
Identities = 21/54 (38%), Positives = 34/54 (62%), Gaps = 4/54 (7%)
Query: 148 RVLFSYTPANADELELHVNDVIDVLSEVEEGWWRG---RLRDRTGVFPSNFVEE 198
R +F + P + DELEL V+D + V +E ++ W+RG R +R G+FP+ + E
Sbjct: 3 RAVFRFIPRHEDELELDVDDPLLVEAEEDDYWYRGYNMRTGER-GIFPAFYAHE 55
>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 = 38.5 bits (89), Expect = 1e-04
Identities = 13/52 (25%), Positives = 29/52 (55%)
Query: 60 RVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVEEI 111
R ++ + + EL D + +L ++++ W+ G R G+FP ++VE++
Sbjct: 4 RAVYDFKAQTSKELSFKKGDTVYILRKIDQNWYEGEHHGRVGIFPISYVEKL 55
Score = 38.5 bits (89), Expect = 1e-04
Identities = 13/52 (25%), Positives = 29/52 (55%)
Query: 148 RVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVEEI 199
R ++ + + EL D + +L ++++ W+ G R G+FP ++VE++
Sbjct: 4 RAVYDFKAQTSKELSFKKGDTVYILRKIDQNWYEGEHHGRVGIFPISYVEKL 55
Score = 33.1 bits (75), Expect = 0.010
Identities = 13/36 (36%), Positives = 21/36 (58%)
Query: 7 ASVEFDYTAQEADELTLRKGDLITGIRVQSGGWWEG 42
A +D+ AQ + EL+ +KGD + +R W+EG
Sbjct: 3 ARAVYDFKAQTSKELSFKKGDTVYILRKIDQNWYEG 38
>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 = 38.4 bits (89), Expect = 2e-04
Identities = 19/54 (35%), Positives = 28/54 (51%), Gaps = 3/54 (5%)
Query: 60 RVLFSYTPANADELELHVNDVIDVLS---EVEEGWWRGRLRDRTGVFPSNFVEE 110
+ L+ Y DEL +I +L+ + ++G+W G R GVFPS VEE
Sbjct: 3 KALYDYEGQTDDELSFPEGAIIRILNKENQDDDGFWEGEFNGRIGVFPSVLVEE 56
Score = 38.4 bits (89), Expect = 2e-04
Identities = 19/54 (35%), Positives = 28/54 (51%), Gaps = 3/54 (5%)
Query: 148 RVLFSYTPANADELELHVNDVIDVLS---EVEEGWWRGRLRDRTGVFPSNFVEE 198
+ L+ Y DEL +I +L+ + ++G+W G R GVFPS VEE
Sbjct: 3 KALYDYEGQTDDELSFPEGAIIRILNKENQDDDGFWEGEFNGRIGVFPSVLVEE 56
>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 = 38.1 bits (88), Expect = 2e-04
Identities = 18/47 (38%), Positives = 24/47 (51%)
Query: 62 LFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFV 108
L+ + + EL DVI VL + WW GR DR FP++FV
Sbjct: 6 LWDHVTMDDQELAFKAGDVIRVLEASNKDWWWGRNEDREAWFPASFV 52
Score = 38.1 bits (88), Expect = 2e-04
Identities = 18/47 (38%), Positives = 24/47 (51%)
Query: 150 LFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFV 196
L+ + + EL DVI VL + WW GR DR FP++FV
Sbjct: 6 LWDHVTMDDQELAFKAGDVIRVLEASNKDWWWGRNEDREAWFPASFV 52
>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 = 38.0 bits (88), Expect = 2e-04
Identities = 20/54 (37%), Positives = 30/54 (55%), Gaps = 2/54 (3%)
Query: 58 RCRVLFSYTPANADELELHVND-VIDVLSEVEEGWWRGRLRD-RTGVFPSNFVE 109
R R L+ Y DEL D + + E E+GW +GRL + G++P+N+VE
Sbjct: 2 RVRALYDYDGQEQDELSFKAGDELTKLEDEDEQGWCKGRLDSGQVGLYPANYVE 55
Score = 38.0 bits (88), Expect = 2e-04
Identities = 20/54 (37%), Positives = 30/54 (55%), Gaps = 2/54 (3%)
Query: 146 RCRVLFSYTPANADELELHVND-VIDVLSEVEEGWWRGRLRD-RTGVFPSNFVE 197
R R L+ Y DEL D + + E E+GW +GRL + G++P+N+VE
Sbjct: 2 RVRALYDYDGQEQDELSFKAGDELTKLEDEDEQGWCKGRLDSGQVGLYPANYVE 55
Score = 28.8 bits (64), Expect = 0.40
Identities = 14/35 (40%), Positives = 21/35 (60%), Gaps = 1/35 (2%)
Query: 11 FDYTAQEADELTLRKGDLITGIRVQ-SGGWWEGLL 44
+DY QE DEL+ + GD +T + + GW +G L
Sbjct: 7 YDYDGQEQDELSFKAGDELTKLEDEDEQGWCKGRL 41
>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 = 37.7 bits (88), Expect = 2e-04
Identities = 15/53 (28%), Positives = 23/53 (43%), Gaps = 3/53 (5%)
Query: 60 RVLFSYTPANADELELHVNDVI---DVLSEVEEGWWRGRLRDRTGVFPSNFVE 109
+ +Y + L H DVI ++ GW G L R+G FP +V+
Sbjct: 3 VAVRAYITRDQTLLSFHKGDVIKLLPKEGPLDPGWLFGTLDGRSGAFPKEYVQ 55
Score = 37.7 bits (88), Expect = 2e-04
Identities = 15/53 (28%), Positives = 23/53 (43%), Gaps = 3/53 (5%)
Query: 148 RVLFSYTPANADELELHVNDVI---DVLSEVEEGWWRGRLRDRTGVFPSNFVE 197
+ +Y + L H DVI ++ GW G L R+G FP +V+
Sbjct: 3 VAVRAYITRDQTLLSFHKGDVIKLLPKEGPLDPGWLFGTLDGRSGAFPKEYVQ 55
>gnl|CDD|212923 cd11990, SH3_Intersectin2_2, Second Src homology 3 domain (or SH3B)
of Intersectin-2. Intersectin-2 (ITSN2) is an adaptor
protein that functions in exo- and endocytosis, actin
cytoskeletal reorganization, and signal transduction. It
plays a role in clathrin-coated pit (CCP) formation. It
binds to many proteins through its multidomain structure
and facilitate the assembly of multimeric complexes.
ITSN2 also functions as a specific GEF for Cdc42
activation in epithelial morphogenesis, and is required
in mitotic spindle orientation. It exists in
alternatively spliced short and long isoforms. The short
isoform contains two Eps15 homology domains (EH1 and
EH2), a coiled-coil region and five SH3 domains
(SH3A-E), while the long isoform, in addition, contains
RhoGEF (also called Dbl-homologous or DH), Pleckstrin
homology (PH) and C2 domains. The second SH3 domain (or
SH3B) of ITSN2 is expected to bind protein partners,
similar to ITSN1 which has been shown to bind WNK and
CdGAP. SH3 domains are protein interaction domains that
bind to proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 52
Score = 37.7 bits (87), Expect = 2e-04
Identities = 18/52 (34%), Positives = 28/52 (53%), Gaps = 1/52 (1%)
Query: 58 RCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVE 109
+ + L S+T + L ND+I VL E +E WW G + G FP ++V+
Sbjct: 1 KAQALCSWTAKKDNHLNFSKNDIITVL-EQQENWWFGEVHGGRGWFPKSYVK 51
Score = 37.7 bits (87), Expect = 2e-04
Identities = 18/52 (34%), Positives = 28/52 (53%), Gaps = 1/52 (1%)
Query: 146 RCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVE 197
+ + L S+T + L ND+I VL E +E WW G + G FP ++V+
Sbjct: 1 KAQALCSWTAKKDNHLNFSKNDIITVL-EQQENWWFGEVHGGRGWFPKSYVK 51
>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 = 3e-04
Identities = 21/49 (42%), Positives = 30/49 (61%), Gaps = 2/49 (4%)
Query: 64 SYTPANADELELHVNDVIDVLSEVEEGWWRG-RLRDRT-GVFPSNFVEE 110
Y DEL L + DV+++L + ++GW G RL D+ G FPS+ VEE
Sbjct: 7 PYVSQEPDELSLELADVLNILDKTDDGWIFGERLHDQERGWFPSSVVEE 55
Score = 37.6 bits (87), Expect = 3e-04
Identities = 21/49 (42%), Positives = 30/49 (61%), Gaps = 2/49 (4%)
Query: 152 SYTPANADELELHVNDVIDVLSEVEEGWWRG-RLRDRT-GVFPSNFVEE 198
Y DEL L + DV+++L + ++GW G RL D+ G FPS+ VEE
Sbjct: 7 PYVSQEPDELSLELADVLNILDKTDDGWIFGERLHDQERGWFPSSVVEE 55
>gnl|CDD|212756 cd11822, SH3_SASH_like, Src homology 3 domain of SAM And SH3 Domain
Containing Proteins. This subfamily, also called the
SLY family, is composed of SAM And SH3 Domain Containing
Protein 1 (SASH1), SASH2, SASH3, and similar proteins.
These are adaptor proteins containing a central
conserved region with a bipartite nuclear localization
signal (NLS) as wells as SAM (sterile alpha motif) and
SH3 domains. SASH1 is a potential tumor suppressor in
breast and colon cancer. It is widely expressed in
normal tissues (except lymphocytes and dendritic cells)
and is localized in the nucleus and the cytoplasm. SASH1
interacts with the oncoprotein cortactin and is
important in cell migration and adhesion. SASH2 (also
called SAMSN-1, SLY2, HACS1 or NASH1) and SASH3 (also
called SLY/SLY1) are expressed mainly in hematopoietic
cells, although SASH2 is also found in endothelial cells
as well as myeloid leukemias and myeloma. SASH2 was
found to be differentially expressed in malignant
haematopoietic cells and in colorectal tumors, and is a
potential tumor suppressor in lung cancer. SASH3 is
essential in the full activation of adaptive immunity
and is involved in the signaling of T cell receptors.
SH3 domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in 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 = 37.6 bits (87), Expect = 3e-04
Identities = 16/48 (33%), Positives = 28/48 (58%), Gaps = 2/48 (4%)
Query: 58 RCRVLFSYTPA--NADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVF 103
R +V +TP+ + D L+L D+ID++++ G W G L ++ G F
Sbjct: 1 RAKVHTDFTPSPYDTDSLKLKKGDIIDIINKPPMGIWTGMLNNKVGNF 48
Score = 37.6 bits (87), Expect = 3e-04
Identities = 16/48 (33%), Positives = 28/48 (58%), Gaps = 2/48 (4%)
Query: 146 RCRVLFSYTPA--NADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVF 191
R +V +TP+ + D L+L D+ID++++ G W G L ++ G F
Sbjct: 1 RAKVHTDFTPSPYDTDSLKLKKGDIIDIINKPPMGIWTGMLNNKVGNF 48
Score = 30.6 bits (69), Expect = 0.082
Identities = 16/40 (40%), Positives = 21/40 (52%), Gaps = 2/40 (5%)
Query: 7 ASVEFDYTAQ--EADELTLRKGDLITGIRVQSGGWWEGLL 44
A V D+T + D L L+KGD+I I G W G+L
Sbjct: 2 AKVHTDFTPSPYDTDSLKLKKGDIIDIINKPPMGIWTGML 41
>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 = 37.6 bits (87), Expect = 3e-04
Identities = 17/50 (34%), Positives = 25/50 (50%), Gaps = 3/50 (6%)
Query: 60 RVLFSYTPANADELELHVNDVIDVLSE---VEEGWWRGRLRDRTGVFPSN 106
R L+ +DEL D++ VL + EGWW+ L R G+ P+N
Sbjct: 4 RALYDNKADCSDELAFRRGDILTVLEQNVPGSEGWWKCLLHGRQGLAPAN 53
Score = 37.6 bits (87), Expect = 3e-04
Identities = 17/50 (34%), Positives = 25/50 (50%), Gaps = 3/50 (6%)
Query: 148 RVLFSYTPANADELELHVNDVIDVLSE---VEEGWWRGRLRDRTGVFPSN 194
R L+ +DEL D++ VL + EGWW+ L R G+ P+N
Sbjct: 4 RALYDNKADCSDELAFRRGDILTVLEQNVPGSEGWWKCLLHGRQGLAPAN 53
Score = 35.6 bits (82), Expect = 0.002
Identities = 18/48 (37%), Positives = 26/48 (54%), Gaps = 4/48 (8%)
Query: 7 ASVEFDYTAQEADELTLRKGDLITGIR---VQSGGWWEGLLVRERQAV 51
A +D A +DEL R+GD++T + S GWW+ LL RQ +
Sbjct: 3 ARALYDNKADCSDELAFRRGDILTVLEQNVPGSEGWWKCLL-HGRQGL 49
>gnl|CDD|212707 cd11773, SH3_Sla1p_1, First Src Homology 3 domain of the fungal
endocytic adaptor protein Sla1p. Sla1p facilitates
endocytosis by playing a role as an adaptor protein in
coupling components of the actin cytoskeleton to the
endocytic machinery. It interacts with Abp1p, Las17p and
Pan1p, which are activator proteins of actin-related
protein 2/3 (Arp2/3). Sla1p contains multiple domains
including three SH3 domains, a SAM (sterile alpha motif)
domain, and a Sla1 homology domain 1 (SHD1), which binds
to the NPFXD motif that is found in many integral
membrane proteins such as the Golgi-localized
Arf-binding protein Lsb5p and the P4-ATPases, Drs2p and
Dnf1p. SH3 domains are protein interaction domains that
bind to proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 57
Score = 37.8 bits (88), Expect = 3e-04
Identities = 13/56 (23%), Positives = 30/56 (53%), Gaps = 7/56 (12%)
Query: 59 CRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRT-------GVFPSNF 107
+ L+ Y P DEL + +D++ +L + ++ WW+ +L+ + G+ P+ +
Sbjct: 2 YKALYDYEPQTEDELTIQEDDILYLLEKSDDDWWKVKLKVNSSDDDEPVGLVPATY 57
Score = 37.8 bits (88), Expect = 3e-04
Identities = 13/56 (23%), Positives = 30/56 (53%), Gaps = 7/56 (12%)
Query: 147 CRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRT-------GVFPSNF 195
+ L+ Y P DEL + +D++ +L + ++ WW+ +L+ + G+ P+ +
Sbjct: 2 YKALYDYEPQTEDELTIQEDDILYLLEKSDDDWWKVKLKVNSSDDDEPVGLVPATY 57
Score = 27.4 bits (61), Expect = 1.2
Identities = 13/50 (26%), Positives = 21/50 (42%)
Query: 7 ASVEFDYTAQEADELTLRKGDLITGIRVQSGGWWEGLLVRERQAVTEQPG 56
+DY Q DELT+++ D++ + WW+ L E G
Sbjct: 2 YKALYDYEPQTEDELTIQEDDILYLLEKSDDDWWKVKLKVNSSDDDEPVG 51
>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 = 37.5 bits (87), Expect = 3e-04
Identities = 14/51 (27%), Positives = 29/51 (56%), Gaps = 4/51 (7%)
Query: 61 VLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRL---RDRTGVFPSNFV 108
++++ + +L L + DV+ + E E W++G L +D G+FP +F+
Sbjct: 4 AIYNFKGSGVPQLSLQIGDVVHIQ-ETCEDWYKGYLVRHKDLQGIFPKSFI 53
Score = 37.5 bits (87), Expect = 3e-04
Identities = 14/51 (27%), Positives = 29/51 (56%), Gaps = 4/51 (7%)
Query: 149 VLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRL---RDRTGVFPSNFV 196
++++ + +L L + DV+ + E E W++G L +D G+FP +F+
Sbjct: 4 AIYNFKGSGVPQLSLQIGDVVHIQ-ETCEDWYKGYLVRHKDLQGIFPKSFI 53
>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 = 37.3 bits (86), Expect = 3e-04
Identities = 17/53 (32%), Positives = 29/53 (54%), Gaps = 2/53 (3%)
Query: 60 RVLFSYTPANADELELHVNDVIDVLSEV--EEGWWRGRLRDRTGVFPSNFVEE 110
R L+ + + DE+ + D++ V E GW G L+ +TG FP+N+ E+
Sbjct: 3 RALYPFEARSHDEITIQPGDIVMVDESQTGEPGWLGGELKGKTGWFPANYAEK 55
Score = 37.3 bits (86), Expect = 3e-04
Identities = 17/53 (32%), Positives = 29/53 (54%), Gaps = 2/53 (3%)
Query: 148 RVLFSYTPANADELELHVNDVIDVLSEV--EEGWWRGRLRDRTGVFPSNFVEE 198
R L+ + + DE+ + D++ V E GW G L+ +TG FP+N+ E+
Sbjct: 3 RALYPFEARSHDEITIQPGDIVMVDESQTGEPGWLGGELKGKTGWFPANYAEK 55
>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 = 37.3 bits (86), Expect = 4e-04
Identities = 25/57 (43%), Positives = 27/57 (47%), Gaps = 8/57 (14%)
Query: 60 RVLFSYTPANADELELHVNDVIDV----LSEVEEGWWRGRLRDRTGV---FPSNFVE 109
R LF Y P N DEL L D I V SE EGW G + RTG P N+ E
Sbjct: 4 RALFQYKPQNIDELMLSPGDYIFVDPTQQSEASEGWVIG-ISHRTGCRGFLPENYTE 59
Score = 37.3 bits (86), Expect = 4e-04
Identities = 25/57 (43%), Positives = 27/57 (47%), Gaps = 8/57 (14%)
Query: 148 RVLFSYTPANADELELHVNDVIDV----LSEVEEGWWRGRLRDRTGV---FPSNFVE 197
R LF Y P N DEL L D I V SE EGW G + RTG P N+ E
Sbjct: 4 RALFQYKPQNIDELMLSPGDYIFVDPTQQSEASEGWVIG-ISHRTGCRGFLPENYTE 59
>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 = 37.3 bits (86), Expect = 4e-04
Identities = 17/57 (29%), Positives = 32/57 (56%), Gaps = 2/57 (3%)
Query: 57 RRCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLR--DRTGVFPSNFVEEI 111
R R ++ Y+ + DE+ D I + ++EGW G ++ RTG+ P+N++E +
Sbjct: 1 RTYRAMYDYSAQDEDEVSFRDGDYIVNVQPIDEGWMYGTVQRTGRTGMLPANYIEFV 57
Score = 37.3 bits (86), Expect = 4e-04
Identities = 17/57 (29%), Positives = 32/57 (56%), Gaps = 2/57 (3%)
Query: 145 RRCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLR--DRTGVFPSNFVEEI 199
R R ++ Y+ + DE+ D I + ++EGW G ++ RTG+ P+N++E +
Sbjct: 1 RTYRAMYDYSAQDEDEVSFRDGDYIVNVQPIDEGWMYGTVQRTGRTGMLPANYIEFV 57
Score = 35.0 bits (80), Expect = 0.003
Identities = 14/36 (38%), Positives = 22/36 (61%)
Query: 11 FDYTAQEADELTLRKGDLITGIRVQSGGWWEGLLVR 46
+DY+AQ+ DE++ R GD I ++ GW G + R
Sbjct: 7 YDYSAQDEDEVSFRDGDYIVNVQPIDEGWMYGTVQR 42
>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 = 4e-04
Identities = 16/33 (48%), Positives = 20/33 (60%), Gaps = 1/33 (3%)
Query: 11 FDYTAQEADELTLRKGDLITGIRVQSG-GWWEG 42
+DY AQ DE+++R GD I IR G GW G
Sbjct: 6 YDYEAQGDDEISIRVGDRIAVIRGDDGSGWTYG 38
Score = 35.2 bits (81), Expect = 0.002
Identities = 14/48 (29%), Positives = 24/48 (50%), Gaps = 1/48 (2%)
Query: 61 VLFSYTPANADELELHVNDVIDVLSEVE-EGWWRGRLRDRTGVFPSNF 107
L+ Y DE+ + V D I V+ + GW G + G+FP+++
Sbjct: 4 ALYDYEAQGDDEISIRVGDRIAVIRGDDGSGWTYGEINGVKGLFPTSY 51
Score = 35.2 bits (81), Expect = 0.002
Identities = 14/48 (29%), Positives = 24/48 (50%), Gaps = 1/48 (2%)
Query: 149 VLFSYTPANADELELHVNDVIDVLSEVE-EGWWRGRLRDRTGVFPSNF 195
L+ Y DE+ + V D I V+ + GW G + G+FP+++
Sbjct: 4 ALYDYEAQGDDEISIRVGDRIAVIRGDDGSGWTYGEINGVKGLFPTSY 51
>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 = 36.9 bits (86), Expect = 4e-04
Identities = 18/53 (33%), Positives = 26/53 (49%), Gaps = 3/53 (5%)
Query: 60 RVLFSYTPANADELELHVNDVIDVL---SEVEEGWWRGRLRDRTGVFPSNFVE 109
R L+ + DEL D++ VL + EGWW LR R G+ P N ++
Sbjct: 3 RALYDNVAESPDELAFRRGDILTVLEQNTAGLEGWWLCSLRGRQGIAPGNRLK 55
Score = 36.9 bits (86), Expect = 4e-04
Identities = 18/53 (33%), Positives = 26/53 (49%), Gaps = 3/53 (5%)
Query: 148 RVLFSYTPANADELELHVNDVIDVL---SEVEEGWWRGRLRDRTGVFPSNFVE 197
R L+ + DEL D++ VL + EGWW LR R G+ P N ++
Sbjct: 3 RALYDNVAESPDELAFRRGDILTVLEQNTAGLEGWWLCSLRGRQGIAPGNRLK 55
Score = 33.1 bits (76), Expect = 0.010
Identities = 19/54 (35%), Positives = 29/54 (53%), Gaps = 6/54 (11%)
Query: 11 FDYTAQEADELTLRKGDLITGIRVQSG---GWWEGLLVRERQAVTEQPGRRCRV 61
+D A+ DEL R+GD++T + + GWW L R RQ + PG R ++
Sbjct: 6 YDNVAESPDELAFRRGDILTVLEQNTAGLEGWWLCSL-RGRQGIA--PGNRLKL 56
>gnl|CDD|212704 cd11770, SH3_Nephrocystin, Src Homology 3 domain of Nephrocystin
(or Nephrocystin-1). Nephrocystin contains an SH3
domain involved in signaling pathways that regulate
cell adhesion and cytoskeletal organization. It is a
protein that in humans is associated with juvenile
nephronophthisis, an inherited kidney disease
characterized by renal fibrosis that lead to chronic
renal failure in children. It is localized in cell-cell
junctions in renal duct cells, and is known to interact
with Ack1, an activated Cdc42-associated kinase. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 54
Score = 36.9 bits (86), Expect = 5e-04
Identities = 9/30 (30%), Positives = 20/30 (66%)
Query: 12 DYTAQEADELTLRKGDLITGIRVQSGGWWE 41
D+ A++ +L+ +KG+++ I ++ GWW
Sbjct: 7 DFQAEQEGDLSFKKGEVLRIISKRADGWWL 36
Score = 28.0 bits (63), Expect = 0.61
Identities = 9/54 (16%), Positives = 21/54 (38%), Gaps = 1/54 (1%)
Query: 58 RCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRD-RTGVFPSNFVEE 110
L + +L +V+ ++S+ +GWW G+ P +++
Sbjct: 1 LYEALSDFQAEQEGDLSFKKGEVLRIISKRADGWWLAENSKGNRGLVPKTYLKV 54
Score = 28.0 bits (63), Expect = 0.61
Identities = 9/54 (16%), Positives = 21/54 (38%), Gaps = 1/54 (1%)
Query: 146 RCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRD-RTGVFPSNFVEE 198
L + +L +V+ ++S+ +GWW G+ P +++
Sbjct: 1 LYEALSDFQAEQEGDLSFKKGEVLRIISKRADGWWLAENSKGNRGLVPKTYLKV 54
>gnl|CDD|212906 cd11973, SH3_ASEF, Src homology 3 domain of APC-Stimulated guanine
nucleotide Exchange Factor. ASEF, also called ARHGEF4,
exists in an autoinhibited form and is activated upon
binding of the tumor suppressor APC (adenomatous
polyposis coli). GEFs activate small GTPases by
exchanging bound GDP for free GTP. ASEF can activate
Rac1 or Cdc42. Truncated ASEF, which is found in
colorectal cancers, is constitutively active and has
been shown to promote angiogenesis and cancer cell
migration. ASEF contains a SH3 domain followed by RhoGEF
(also called Dbl-homologous or DH) and Pleckstrin
Homology (PH) domains. In its autoinhibited form, the
SH3 domain of ASEF forms an extensive interface with the
DH and PH domains, blocking the Rac binding site. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 73
Score = 37.3 bits (86), Expect = 5e-04
Identities = 17/47 (36%), Positives = 26/47 (55%)
Query: 62 LFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFV 108
L+ + + EL DVI+V+ + WW GR+ D G FP++FV
Sbjct: 23 LWDHVTMDDQELGFKAGDVIEVMDATNKEWWWGRVLDSEGWFPASFV 69
Score = 37.3 bits (86), Expect = 5e-04
Identities = 17/47 (36%), Positives = 26/47 (55%)
Query: 150 LFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFV 196
L+ + + EL DVI+V+ + WW GR+ D G FP++FV
Sbjct: 23 LWDHVTMDDQELGFKAGDVIEVMDATNKEWWWGRVLDSEGWFPASFV 69
>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 = 36.7 bits (85), Expect = 6e-04
Identities = 17/37 (45%), Positives = 23/37 (62%)
Query: 13 YTAQEADELTLRKGDLITGIRVQSGGWWEGLLVRERQ 49
Y AQE DELTL K D+I + S GW EG+ + + +
Sbjct: 8 YKAQENDELTLEKADIIMVRQQSSDGWLEGVRLSDGE 44
Score = 35.5 bits (82), Expect = 0.001
Identities = 21/49 (42%), Positives = 25/49 (51%), Gaps = 2/49 (4%)
Query: 64 SYTPANADELELHVNDVIDVLSEVEEGWWRG-RLRDR-TGVFPSNFVEE 110
SY DEL L D+I V + +GW G RL D G FP + VEE
Sbjct: 7 SYKAQENDELTLEKADIIMVRQQSSDGWLEGVRLSDGERGWFPQSHVEE 55
Score = 35.5 bits (82), Expect = 0.001
Identities = 21/49 (42%), Positives = 25/49 (51%), Gaps = 2/49 (4%)
Query: 152 SYTPANADELELHVNDVIDVLSEVEEGWWRG-RLRDR-TGVFPSNFVEE 198
SY DEL L D+I V + +GW G RL D G FP + VEE
Sbjct: 7 SYKAQENDELTLEKADIIMVRQQSSDGWLEGVRLSDGERGWFPQSHVEE 55
>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 = 36.4 bits (85), Expect = 6e-04
Identities = 13/48 (27%), Positives = 21/48 (43%), Gaps = 2/48 (4%)
Query: 62 LFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRD--RTGVFPSNF 107
L+ Y D+L D + +L + + WW R + G PSN+
Sbjct: 5 LYDYEARTDDDLSFKKGDRLQILDDSDGDWWLARHLSTGKEGYIPSNY 52
Score = 36.4 bits (85), Expect = 6e-04
Identities = 13/48 (27%), Positives = 21/48 (43%), Gaps = 2/48 (4%)
Query: 150 LFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRD--RTGVFPSNF 195
L+ Y D+L D + +L + + WW R + G PSN+
Sbjct: 5 LYDYEARTDDDLSFKKGDRLQILDDSDGDWWLARHLSTGKEGYIPSNY 52
Score = 33.7 bits (78), Expect = 0.005
Identities = 11/39 (28%), Positives = 20/39 (51%)
Query: 11 FDYTAQEADELTLRKGDLITGIRVQSGGWWEGLLVRERQ 49
+DY A+ D+L+ +KGD + + G WW + +
Sbjct: 6 YDYEARTDDDLSFKKGDRLQILDDSDGDWWLARHLSTGK 44
>gnl|CDD|212898 cd11965, SH3_ASAP1, Src homology 3 domain of ArfGAP with SH3
domain, ankyrin repeat and PH domain containing protein
1. ASAP1 is also called DDEF1 (Development and
Differentiation Enhancing Factor 1), AMAP1, centaurin
beta-4, or PAG2. an Arf GTPase activating protein (GAP)
with activity towards Arf1 and Arf5 but not Arf6.
However, it has been shown to bind GTP-Arf6 stably
without GAP activity. It has been implicated in cell
growth, migration, and survival, as well as in tumor
invasion and malignancy. It binds paxillin and
cortactin, two components of invadopodia which are
essential for tumor invasiveness. It also binds focal
adhesion kinase (FAK) and the SH2/SH3 adaptor CrkL.
ASAP1 contains an N-terminal BAR domain, followed by a
Pleckstrin homology (PH) domain, an Arf GAP domain,
ankyrin (ANK) repeats, and a C-terminal SH3 domain. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 57
Score = 36.5 bits (84), Expect = 7e-04
Identities = 19/54 (35%), Positives = 28/54 (51%), Gaps = 3/54 (5%)
Query: 58 RCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLR---DRTGVFPSNFV 108
R + ++ N DEL +VI V E ++ WW G + +R GVFP +FV
Sbjct: 1 RVKTIYDCQADNDDELTFVEGEVIIVTGEEDQEWWIGHIEGQPERKGVFPVSFV 54
Score = 36.5 bits (84), Expect = 7e-04
Identities = 19/54 (35%), Positives = 28/54 (51%), Gaps = 3/54 (5%)
Query: 146 RCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLR---DRTGVFPSNFV 196
R + ++ N DEL +VI V E ++ WW G + +R GVFP +FV
Sbjct: 1 RVKTIYDCQADNDDELTFVEGEVIIVTGEEDQEWWIGHIEGQPERKGVFPVSFV 54
>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 = 36.4 bits (84), Expect = 8e-04
Identities = 13/50 (26%), Positives = 28/50 (56%)
Query: 60 RVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVE 109
+ L+SY +L+ + D+I + +V+E W+ G L G P+++++
Sbjct: 4 KALYSYEGKEPGDLKFNKGDIIILRRKVDENWYHGELNGCHGFLPASYIQ 53
Score = 36.4 bits (84), Expect = 8e-04
Identities = 13/50 (26%), Positives = 28/50 (56%)
Query: 148 RVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVE 197
+ L+SY +L+ + D+I + +V+E W+ G L G P+++++
Sbjct: 4 KALYSYEGKEPGDLKFNKGDIIILRRKVDENWYHGELNGCHGFLPASYIQ 53
>gnl|CDD|212901 cd11968, SH3_SASH3, Src homology 3 domain of Sam And SH3 Domain
Containing Protein 3. SASH3, also called SLY/SLY1
(SH3-domain containing protein expressed in
lymphocytes), is expressed exclusively in lymhocytes and
is essential in the full activation of adaptive
immunity. It is involved in the signaling of T cell
receptors. It was the first described member of the SLY
family of proteins, which are adaptor proteins
containing a central conserved region with a bipartite
nuclear localization signal (NLS) as well as SAM
(sterile alpha motif) 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 = 56
Score = 36.4 bits (84), Expect = 8e-04
Identities = 16/54 (29%), Positives = 28/54 (51%), Gaps = 2/54 (3%)
Query: 58 RCRVLFSYTPA--NADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVE 109
R RV + P+ + D L+L D+I ++ + G W G L ++ G F +V+
Sbjct: 2 RARVHTDFIPSPYDGDSLKLQKGDIIQIIEKPPVGTWTGLLNNKVGTFKFIYVD 55
Score = 36.4 bits (84), Expect = 8e-04
Identities = 16/54 (29%), Positives = 28/54 (51%), Gaps = 2/54 (3%)
Query: 146 RCRVLFSYTPA--NADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVE 197
R RV + P+ + D L+L D+I ++ + G W G L ++ G F +V+
Sbjct: 2 RARVHTDFIPSPYDGDSLKLQKGDIIQIIEKPPVGTWTGLLNNKVGTFKFIYVD 55
Score = 29.8 bits (67), Expect = 0.14
Identities = 16/40 (40%), Positives = 20/40 (50%), Gaps = 2/40 (5%)
Query: 7 ASVEFDYTAQ--EADELTLRKGDLITGIRVQSGGWWEGLL 44
A V D+ + D L L+KGD+I I G W GLL
Sbjct: 3 ARVHTDFIPSPYDGDSLKLQKGDIIQIIEKPPVGTWTGLL 42
>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 = 36.2 bits (84), Expect = 9e-04
Identities = 10/30 (33%), Positives = 20/30 (66%)
Query: 11 FDYTAQEADELTLRKGDLITGIRVQSGGWW 40
+D+ A+EL+L+K D++ ++ + GWW
Sbjct: 6 YDFAGSVANELSLKKDDIVYIVQKEDNGWW 35
Score = 33.9 bits (78), Expect = 0.006
Identities = 14/55 (25%), Positives = 31/55 (56%), Gaps = 2/55 (3%)
Query: 58 RCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRT--GVFPSNFVEE 110
+ L+ + + A+EL L +D++ ++ + + GWW + D + G P+ ++EE
Sbjct: 1 TYKALYDFAGSVANELSLKKDDIVYIVQKEDNGWWLAKKLDESKEGWVPAAYLEE 55
Score = 33.9 bits (78), Expect = 0.006
Identities = 14/55 (25%), Positives = 31/55 (56%), Gaps = 2/55 (3%)
Query: 146 RCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRT--GVFPSNFVEE 198
+ L+ + + A+EL L +D++ ++ + + GWW + D + G P+ ++EE
Sbjct: 1 TYKALYDFAGSVANELSLKKDDIVYIVQKEDNGWWLAKKLDESKEGWVPAAYLEE 55
>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 = 36.2 bits (83), Expect = 0.001
Identities = 15/50 (30%), Positives = 32/50 (64%)
Query: 61 VLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVEE 110
V++ YT + DE+ L V++V+ + EGWW+ R + + G P++++++
Sbjct: 5 VIYPYTARDQDEINLEKGAVVEVIQKNLEGWWKIRYQGKEGWAPASYLKK 54
Score = 36.2 bits (83), Expect = 0.001
Identities = 15/50 (30%), Positives = 32/50 (64%)
Query: 149 VLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVEE 198
V++ YT + DE+ L V++V+ + EGWW+ R + + G P++++++
Sbjct: 5 VIYPYTARDQDEINLEKGAVVEVIQKNLEGWWKIRYQGKEGWAPASYLKK 54
Score = 31.2 bits (70), Expect = 0.059
Identities = 13/34 (38%), Positives = 22/34 (64%)
Query: 8 SVEFDYTAQEADELTLRKGDLITGIRVQSGGWWE 41
+V + YTA++ DE+ L KG ++ I+ GWW+
Sbjct: 4 TVIYPYTARDQDEINLEKGAVVEVIQKNLEGWWK 37
>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 = 35.8 bits (83), Expect = 0.001
Identities = 18/53 (33%), Positives = 27/53 (50%), Gaps = 5/53 (9%)
Query: 60 RVLFSYTPANADELELHVNDVIDVLSEVEE---GWWRGR--LRDRTGVFPSNF 107
V+ + + DEL L D I+++ + EE GW+ GR TG+FP F
Sbjct: 3 IVIHDFNARSEDELTLKPGDKIELIEDDEEFGDGWYLGRNLRTGETGLFPVVF 55
Score = 35.8 bits (83), Expect = 0.001
Identities = 18/53 (33%), Positives = 27/53 (50%), Gaps = 5/53 (9%)
Query: 148 RVLFSYTPANADELELHVNDVIDVLSEVEE---GWWRGR--LRDRTGVFPSNF 195
V+ + + DEL L D I+++ + EE GW+ GR TG+FP F
Sbjct: 3 IVIHDFNARSEDELTLKPGDKIELIEDDEEFGDGWYLGRNLRTGETGLFPVVF 55
Score = 28.5 bits (64), Expect = 0.52
Identities = 14/34 (41%), Positives = 18/34 (52%), Gaps = 3/34 (8%)
Query: 12 DYTAQEADELTLRKGDLITGIRVQSG---GWWEG 42
D+ A+ DELTL+ GD I I GW+ G
Sbjct: 7 DFNARSEDELTLKPGDKIELIEDDEEFGDGWYLG 40
>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 = 35.6 bits (82), Expect = 0.001
Identities = 14/49 (28%), Positives = 29/49 (59%), Gaps = 1/49 (2%)
Query: 62 LFSYTPANADELELHVNDVIDVLS-EVEEGWWRGRLRDRTGVFPSNFVE 109
L+S+ +DEL D++ +L+ E ++ W++ L+ R G P N+++
Sbjct: 5 LYSFQATESDELPFQKGDILKILNMEDDQNWYKAELQGREGYIPKNYIK 53
Score = 35.6 bits (82), Expect = 0.001
Identities = 14/49 (28%), Positives = 29/49 (59%), Gaps = 1/49 (2%)
Query: 150 LFSYTPANADELELHVNDVIDVLS-EVEEGWWRGRLRDRTGVFPSNFVE 197
L+S+ +DEL D++ +L+ E ++ W++ L+ R G P N+++
Sbjct: 5 LYSFQATESDELPFQKGDILKILNMEDDQNWYKAELQGREGYIPKNYIK 53
Score = 29.4 bits (66), Expect = 0.21
Identities = 10/24 (41%), Positives = 16/24 (66%)
Query: 6 EASVEFDYTAQEADELTLRKGDLI 29
EA + + A E+DEL +KGD++
Sbjct: 1 EAVALYSFQATESDELPFQKGDIL 24
>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 = 35.3 bits (81), Expect = 0.002
Identities = 18/54 (33%), Positives = 27/54 (50%), Gaps = 3/54 (5%)
Query: 58 RCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLR---DRTGVFPSNFV 108
R + L++ N DEL ++I V E ++ WW G + R G FP +FV
Sbjct: 1 RVKALYNCVADNPDELTFSEGEIIIVDGEEDKEWWIGHIDGEPTRRGAFPVSFV 54
Score = 35.3 bits (81), Expect = 0.002
Identities = 18/54 (33%), Positives = 27/54 (50%), Gaps = 3/54 (5%)
Query: 146 RCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLR---DRTGVFPSNFV 196
R + L++ N DEL ++I V E ++ WW G + R G FP +FV
Sbjct: 1 RVKALYNCVADNPDELTFSEGEIIIVDGEEDKEWWIGHIDGEPTRRGAFPVSFV 54
>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 = 36.0 bits (83), Expect = 0.002
Identities = 22/69 (31%), Positives = 31/69 (44%), Gaps = 15/69 (21%)
Query: 58 RCRVLFSYTPANADELELHVNDVIDVL-----SEVEEGWWRG----------RLRDRTGV 102
+ + YT + DEL+L DV+ V+ E +EGW G +L GV
Sbjct: 4 KVQAQHDYTATDTDELQLKAGDVVLVIPFQNPEEQDEGWLMGVKESDWNQHKKLEKCRGV 63
Query: 103 FPSNFVEEI 111
FP NF E +
Sbjct: 64 FPENFTERV 72
Score = 36.0 bits (83), Expect = 0.002
Identities = 22/69 (31%), Positives = 31/69 (44%), Gaps = 15/69 (21%)
Query: 146 RCRVLFSYTPANADELELHVNDVIDVL-----SEVEEGWWRG----------RLRDRTGV 190
+ + YT + DEL+L DV+ V+ E +EGW G +L GV
Sbjct: 4 KVQAQHDYTATDTDELQLKAGDVVLVIPFQNPEEQDEGWLMGVKESDWNQHKKLEKCRGV 63
Query: 191 FPSNFVEEI 199
FP NF E +
Sbjct: 64 FPENFTERV 72
Score = 31.8 bits (72), Expect = 0.051
Identities = 20/57 (35%), Positives = 28/57 (49%), Gaps = 7/57 (12%)
Query: 12 DYTAQEADELTLRKGDLITGIRV-----QSGGWWEGLLVRERQAVTEQPGRRCRVLF 63
DYTA + DEL L+ GD++ I Q GW G V+E + +CR +F
Sbjct: 10 DYTATDTDELQLKAGDVVLVIPFQNPEEQDEGWLMG--VKESDWNQHKKLEKCRGVF 64
>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 = 35.3 bits (82), Expect = 0.002
Identities = 17/50 (34%), Positives = 25/50 (50%), Gaps = 1/50 (2%)
Query: 62 LFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRD-RTGVFPSNFVEE 110
L+ + P +L L + VL + E WWR R ++ G PSN+V E
Sbjct: 5 LYDFQPIEPGDLPLEKGEEYVVLDDSNEHWWRARDKNGNEGYIPSNYVTE 54
Score = 35.3 bits (82), Expect = 0.002
Identities = 17/50 (34%), Positives = 25/50 (50%), Gaps = 1/50 (2%)
Query: 150 LFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRD-RTGVFPSNFVEE 198
L+ + P +L L + VL + E WWR R ++ G PSN+V E
Sbjct: 5 LYDFQPIEPGDLPLEKGEEYVVLDDSNEHWWRARDKNGNEGYIPSNYVTE 54
>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 = 35.3 bits (81), Expect = 0.002
Identities = 18/54 (33%), Positives = 34/54 (62%), Gaps = 2/54 (3%)
Query: 58 RCRVLFSYTPANADELELHVNDVIDVLSEVE-EGWWRGR-LRDRTGVFPSNFVE 109
+ R L+S+ N +E+ + N+ + + SE +GW +G+ R TG+FP+++VE
Sbjct: 1 KARALYSFQSENKEEINIQENEELVIFSENSLDGWLQGQNSRGETGLFPASYVE 54
Score = 35.3 bits (81), Expect = 0.002
Identities = 18/54 (33%), Positives = 34/54 (62%), Gaps = 2/54 (3%)
Query: 146 RCRVLFSYTPANADELELHVNDVIDVLSEVE-EGWWRGR-LRDRTGVFPSNFVE 197
+ R L+S+ N +E+ + N+ + + SE +GW +G+ R TG+FP+++VE
Sbjct: 1 KARALYSFQSENKEEINIQENEELVIFSENSLDGWLQGQNSRGETGLFPASYVE 54
>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 = 35.4 bits (81), Expect = 0.002
Identities = 21/59 (35%), Positives = 31/59 (52%), Gaps = 6/59 (10%)
Query: 7 ASVEFDYTAQEADELTLRKGDLITGIRVQS---GGWWEGLLVRERQAVTEQPGRRCRVL 62
A +D A+ DEL+ RKGD++T + + GWW L RQ + PG R ++L
Sbjct: 5 AKALYDNVAESPDELSFRKGDIMTVLERDTQGLDGWWLCSL-HGRQGIV--PGNRLKIL 60
Score = 31.9 bits (72), Expect = 0.036
Identities = 15/50 (30%), Positives = 22/50 (44%), Gaps = 3/50 (6%)
Query: 60 RVLFSYTPANADELELHVNDVIDVLSEVEEG---WWRGRLRDRTGVFPSN 106
+ L+ + DEL D++ VL +G WW L R G+ P N
Sbjct: 6 KALYDNVAESPDELSFRKGDIMTVLERDTQGLDGWWLCSLHGRQGIVPGN 55
Score = 31.9 bits (72), Expect = 0.036
Identities = 15/50 (30%), Positives = 22/50 (44%), Gaps = 3/50 (6%)
Query: 148 RVLFSYTPANADELELHVNDVIDVLSEVEEG---WWRGRLRDRTGVFPSN 194
+ L+ + DEL D++ VL +G WW L R G+ P N
Sbjct: 6 KALYDNVAESPDELSFRKGDIMTVLERDTQGLDGWWLCSLHGRQGIVPGN 55
>gnl|CDD|212932 cd11999, SH3_PACSIN_like, Src homology 3 domain of an unknown
subfamily of proteins with similarity to Protein kinase
C and Casein kinase Substrate in Neurons (PACSIN)
proteins. PACSINs, also called Synaptic
dynamin-associated proteins (Syndapins), act as
regulators of cytoskeletal and membrane dynamics. They
bind both dynamin and Wiskott-Aldrich syndrome protein
(WASP), and may provide direct links between the actin
cytoskeletal machinery through WASP and
dynamin-dependent endocytosis. Vetebrates harbor three
isoforms with distinct expression patterns and specific
functions. PACSINs contain an N-terminal F-BAR domain
and a C-terminal SH3 domain. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 56
Score = 34.9 bits (80), Expect = 0.002
Identities = 19/56 (33%), Positives = 30/56 (53%), Gaps = 2/56 (3%)
Query: 56 GRRCRVLFSYTPANADELELHV-NDVIDVLSEVEEGWWRG-RLRDRTGVFPSNFVE 109
G R R ++ YT DEL +++ V E E+GW +G G++P+N+VE
Sbjct: 1 GVRVRAVYDYTGQEPDELSFKAGEELLKVEDEDEQGWCKGVTDGGAVGLYPANYVE 56
Score = 34.9 bits (80), Expect = 0.002
Identities = 19/56 (33%), Positives = 30/56 (53%), Gaps = 2/56 (3%)
Query: 144 GRRCRVLFSYTPANADELELHV-NDVIDVLSEVEEGWWRG-RLRDRTGVFPSNFVE 197
G R R ++ YT DEL +++ V E E+GW +G G++P+N+VE
Sbjct: 1 GVRVRAVYDYTGQEPDELSFKAGEELLKVEDEDEQGWCKGVTDGGAVGLYPANYVE 56
Score = 30.3 bits (68), Expect = 0.12
Identities = 12/34 (35%), Positives = 21/34 (61%), Gaps = 1/34 (2%)
Query: 11 FDYTAQEADELTLRKGDLITGIRVQ-SGGWWEGL 43
+DYT QE DEL+ + G+ + + + GW +G+
Sbjct: 8 YDYTGQEPDELSFKAGEELLKVEDEDEQGWCKGV 41
>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 = 35.0 bits (80), Expect = 0.003
Identities = 18/45 (40%), Positives = 24/45 (53%), Gaps = 6/45 (13%)
Query: 73 LELHVNDVIDVLSEVEEGWWRGRLRD------RTGVFPSNFVEEI 111
L + DVI VL + +G W+G + D R G FPS+ VE I
Sbjct: 18 LNIKAGDVITVLEQHPDGRWKGCIHDNRTGNDRVGYFPSSLVEAI 62
Score = 35.0 bits (80), Expect = 0.003
Identities = 18/45 (40%), Positives = 24/45 (53%), Gaps = 6/45 (13%)
Query: 161 LELHVNDVIDVLSEVEEGWWRGRLRD------RTGVFPSNFVEEI 199
L + DVI VL + +G W+G + D R G FPS+ VE I
Sbjct: 18 LNIKAGDVITVLEQHPDGRWKGCIHDNRTGNDRVGYFPSSLVEAI 62
>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 = 34.6 bits (80), Expect = 0.003
Identities = 15/52 (28%), Positives = 29/52 (55%), Gaps = 1/52 (1%)
Query: 60 RVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRD-RTGVFPSNFVEE 110
R LF + + ++L +++ V+ + EE WW R + +TG+ P +VE+
Sbjct: 4 RALFDFPGNDDEDLPFKKGEILTVIRKPEEQWWNARNSEGKTGMIPVPYVEK 55
Score = 34.6 bits (80), Expect = 0.003
Identities = 15/52 (28%), Positives = 29/52 (55%), Gaps = 1/52 (1%)
Query: 148 RVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRD-RTGVFPSNFVEE 198
R LF + + ++L +++ V+ + EE WW R + +TG+ P +VE+
Sbjct: 4 RALFDFPGNDDEDLPFKKGEILTVIRKPEEQWWNARNSEGKTGMIPVPYVEK 55
Score = 29.6 bits (67), Expect = 0.19
Identities = 10/30 (33%), Positives = 18/30 (60%)
Query: 11 FDYTAQEADELTLRKGDLITGIRVQSGGWW 40
FD+ + ++L +KG+++T IR WW
Sbjct: 7 FDFPGNDDEDLPFKKGEILTVIRKPEEQWW 36
>gnl|CDD|212935 cd12002, SH3_NEDD9, Src homology 3 domain of CAS (Crk-Associated
Substrate) scaffolding protein family member, Neural
precursor cell Expressed, Developmentally Down-regulated
9. NEDD9 is also called human enhancer of filamentation
1 (HEF1) or CAS-L (Crk-associated substrate in
lymphocyte). It was first described as a gene
predominantly expressed in early embryonic brain, and
was also isolated from a screen of human proteins that
regulate filamentous budding in yeast, and as a tyrosine
phosphorylated protein in lymphocytes. It promotes
metastasis in different solid tumors. NEDD9 localizes in
focal adhesions and associates with FAK and Abl kinase.
It also interacts with SMAD3 and the proteasomal
machinery which allows its rapid turnover; these
interactions are not shared by other CAS proteins. CAS
proteins function as molecular scaffolds to regulate
protein complexes that are involved in many cellular
processes. They share a common domain structure that
includes an N-terminal SH3 domain, an unstructured
substrate domain that contains many YxxP motifs, a
serine-rich four-helix bundle, and a FAT-like C-terminal
domain. The SH3 domain of CAS proteins binds to diverse
partners including FAK, FRNK, Pyk2, PTP-PEST, DOCK180,
among others. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP motifs.
They play versatile and diverse roles in the cell
including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 57
Score = 35.0 bits (80), Expect = 0.003
Identities = 17/50 (34%), Positives = 24/50 (48%), Gaps = 3/50 (6%)
Query: 60 RVLFSYTPANADELELHVNDVIDVLSEVE---EGWWRGRLRDRTGVFPSN 106
R L+ P A+EL D++ V+ + EGWW L R G+ P N
Sbjct: 3 RALYDNVPECAEELAFRKGDILTVIEQNTGGLEGWWLCSLHGRQGIAPGN 52
Score = 35.0 bits (80), Expect = 0.003
Identities = 17/50 (34%), Positives = 24/50 (48%), Gaps = 3/50 (6%)
Query: 148 RVLFSYTPANADELELHVNDVIDVLSEVE---EGWWRGRLRDRTGVFPSN 194
R L+ P A+EL D++ V+ + EGWW L R G+ P N
Sbjct: 3 RALYDNVPECAEELAFRKGDILTVIEQNTGGLEGWWLCSLHGRQGIAPGN 52
Score = 33.8 bits (77), Expect = 0.006
Identities = 22/59 (37%), Positives = 31/59 (52%), Gaps = 6/59 (10%)
Query: 7 ASVEFDYTAQEADELTLRKGDLITGIRVQSG---GWWEGLLVRERQAVTEQPGRRCRVL 62
A +D + A+EL RKGD++T I +G GWW L RQ + PG R ++L
Sbjct: 2 ARALYDNVPECAEELAFRKGDILTVIEQNTGGLEGWWLCSL-HGRQGIA--PGNRLKLL 57
>gnl|CDD|212908 cd11975, SH3_ARHGEF9, Src homology 3 domain of the Rho guanine
nucleotide exchange factor ARHGEF9. ARHGEF9, also
called PEM2 or collybistin, selectively activates Cdc42
by exchanging bound GDP for free GTP. It is highly
expressed in the brain and it interacts with gephyrin, a
postsynaptic protein associated with GABA and glycine
receptors. Mutations in the ARHGEF9 gene cause X-linked
mental retardation with associated features like
seizures, hyper-anxiety, aggressive behavior, and
sensory hyperarousal. ARHGEF9 contains a SH3 domain
followed by RhoGEF (also called Dbl-homologous or DH)
and Pleckstrin Homology (PH) domains. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 62
Score = 35.1 bits (80), Expect = 0.003
Identities = 16/37 (43%), Positives = 21/37 (56%)
Query: 72 ELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFV 108
EL DVI VL + WW G++ D G FP++FV
Sbjct: 20 ELAFKAGDVIKVLDASNKDWWWGQIDDEEGWFPASFV 56
Score = 35.1 bits (80), Expect = 0.003
Identities = 16/37 (43%), Positives = 21/37 (56%)
Query: 160 ELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFV 196
EL DVI VL + WW G++ D G FP++FV
Sbjct: 20 ELAFKAGDVIKVLDASNKDWWWGQIDDEEGWFPASFV 56
Score = 28.1 bits (62), Expect = 0.79
Identities = 12/42 (28%), Positives = 20/42 (47%)
Query: 1 GSSVIEASVEFDYTAQEADELTLRKGDLITGIRVQSGGWWEG 42
G S++ A +D+ EL + GD+I + + WW G
Sbjct: 1 GGSIVSAEAVWDHVTMANRELAFKAGDVIKVLDASNKDWWWG 42
>gnl|CDD|212878 cd11945, SH3_Endophilin_B1, Src homology 3 domain of Endophilin-B1.
Endophilin-B1, also called Bax-interacting factor 1
(Bif-1) or SH3GLB1 (SH3-domain GRB2-like endophilin B1),
is localized mainly to the Golgi apparatus. It is
involved in the regulation of many biological events
including autophagy, tumorigenesis, nerve growth factor
(NGF) trafficking, neurite outgrowth, mitochondrial
outer membrane dynamics, and cell death. Endophilins
play roles in synaptic vesicle formation, virus budding,
mitochondrial morphology maintenance, receptor-mediated
endocytosis inhibition, and endosomal sorting. They
contain an N-terminal N-BAR domain (BAR domain with an
additional N-terminal amphipathic helix), followed by a
variable region containing proline clusters, and a
C-terminal SH3 domain. Endophilin-B1 forms homo- and
heterodimers (with endophilin-B2) through its BAR
domain. It interacts with amphiphysin 1 and dynamin 1
through its SH3 domain. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 61
Score = 35.0 bits (80), Expect = 0.003
Identities = 19/55 (34%), Positives = 29/55 (52%), Gaps = 2/55 (3%)
Query: 57 RRCRVLFSYTPANADELELHVNDVIDVLSEV--EEGWWRGRLRDRTGVFPSNFVE 109
R+ RVL+ Y AN+ EL L ++VI V S + W G ++ G P ++E
Sbjct: 4 RKARVLYDYDAANSTELSLLADEVITVYSVPGMDSDWLMGERGNQKGKVPITYLE 58
Score = 35.0 bits (80), Expect = 0.003
Identities = 19/55 (34%), Positives = 29/55 (52%), Gaps = 2/55 (3%)
Query: 145 RRCRVLFSYTPANADELELHVNDVIDVLSEV--EEGWWRGRLRDRTGVFPSNFVE 197
R+ RVL+ Y AN+ EL L ++VI V S + W G ++ G P ++E
Sbjct: 4 RKARVLYDYDAANSTELSLLADEVITVYSVPGMDSDWLMGERGNQKGKVPITYLE 58
>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 = 35.1 bits (80), Expect = 0.003
Identities = 18/38 (47%), Positives = 21/38 (55%)
Query: 7 ASVEFDYTAQEADELTLRKGDLITGIRVQSGGWWEGLL 44
A V YTA ++LTL G LI + GGWWEG L
Sbjct: 6 AQVIASYTATGPEQLTLAPGQLILIRKKNPGGWWEGEL 43
Score = 33.6 bits (76), Expect = 0.011
Identities = 18/55 (32%), Positives = 29/55 (52%), Gaps = 5/55 (9%)
Query: 60 RVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDR-----TGVFPSNFVE 109
+V+ SYT ++L L +I + + GWW G L+ R G FP+N+V+
Sbjct: 7 QVIASYTATGPEQLTLAPGQLILIRKKNPGGWWEGELQARGKKRQIGWFPANYVK 61
Score = 33.6 bits (76), Expect = 0.011
Identities = 18/55 (32%), Positives = 29/55 (52%), Gaps = 5/55 (9%)
Query: 148 RVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDR-----TGVFPSNFVE 197
+V+ SYT ++L L +I + + GWW G L+ R G FP+N+V+
Sbjct: 7 QVIASYTATGPEQLTLAPGQLILIRKKNPGGWWEGELQARGKKRQIGWFPANYVK 61
>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 = 34.6 bits (79), Expect = 0.003
Identities = 21/56 (37%), Positives = 30/56 (53%), Gaps = 8/56 (14%)
Query: 60 RVLFSYTPANADELELHVNDVIDVLSEVE-----EGWWRGRLRDR--TGVFPSNFV 108
+V++ YTP N DELEL D I +S +E EGW G +G+ P N++
Sbjct: 5 QVIYPYTPQNDDELELVPGDYI-FMSPMEQTSTSEGWIYGTSLTTGCSGLLPENYI 59
Score = 34.6 bits (79), Expect = 0.003
Identities = 21/56 (37%), Positives = 30/56 (53%), Gaps = 8/56 (14%)
Query: 148 RVLFSYTPANADELELHVNDVIDVLSEVE-----EGWWRGRLRDR--TGVFPSNFV 196
+V++ YTP N DELEL D I +S +E EGW G +G+ P N++
Sbjct: 5 QVIYPYTPQNDDELELVPGDYI-FMSPMEQTSTSEGWIYGTSLTTGCSGLLPENYI 59
>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 = 34.3 bits (78), Expect = 0.004
Identities = 18/54 (33%), Positives = 26/54 (48%), Gaps = 1/54 (1%)
Query: 57 RRCRVLFSYTPANADELELHVNDVID-VLSEVEEGWWRGRLRDRTGVFPSNFVE 109
R+ + L++ + EL V D V E GW G L +TG+ P N+VE
Sbjct: 1 RKAKALYACKAEHDSELSFTAGTVFDNVHPSQEPGWLEGTLNGKTGLIPENYVE 54
Score = 34.3 bits (78), Expect = 0.004
Identities = 18/54 (33%), Positives = 26/54 (48%), Gaps = 1/54 (1%)
Query: 145 RRCRVLFSYTPANADELELHVNDVID-VLSEVEEGWWRGRLRDRTGVFPSNFVE 197
R+ + L++ + EL V D V E GW G L +TG+ P N+VE
Sbjct: 1 RKAKALYACKAEHDSELSFTAGTVFDNVHPSQEPGWLEGTLNGKTGLIPENYVE 54
>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 = 34.4 bits (79), Expect = 0.004
Identities = 16/52 (30%), Positives = 26/52 (50%), Gaps = 1/52 (1%)
Query: 58 RCRVLFSYTPANADE-LELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFV 108
CR L+++T + L ++I VL + GWW G G FP+++V
Sbjct: 1 LCRTLYAFTGEQHQQGLSFEAGELIRVLQAPDGGWWEGEKDGLRGWFPASYV 52
Score = 34.4 bits (79), Expect = 0.004
Identities = 16/52 (30%), Positives = 26/52 (50%), Gaps = 1/52 (1%)
Query: 146 RCRVLFSYTPANADE-LELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFV 196
CR L+++T + L ++I VL + GWW G G FP+++V
Sbjct: 1 LCRTLYAFTGEQHQQGLSFEAGELIRVLQAPDGGWWEGEKDGLRGWFPASYV 52
Score = 28.6 bits (64), Expect = 0.36
Identities = 10/22 (45%), Positives = 14/22 (63%)
Query: 21 LTLRKGDLITGIRVQSGGWWEG 42
L+ G+LI ++ GGWWEG
Sbjct: 17 LSFEAGELIRVLQAPDGGWWEG 38
>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 = 34.5 bits (79), Expect = 0.004
Identities = 14/52 (26%), Positives = 28/52 (53%)
Query: 60 RVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVEEI 111
RVL+ + P +EL++ +++ VL + + W + G+ P NF+E +
Sbjct: 3 RVLYEFVPETKEELQVLPGNIVFVLKKGTDNWATVVFNGKKGLVPCNFLEPV 54
Score = 34.5 bits (79), Expect = 0.004
Identities = 14/52 (26%), Positives = 28/52 (53%)
Query: 148 RVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVEEI 199
RVL+ + P +EL++ +++ VL + + W + G+ P NF+E +
Sbjct: 3 RVLYEFVPETKEELQVLPGNIVFVLKKGTDNWATVVFNGKKGLVPCNFLEPV 54
>gnl|CDD|212915 cd11982, SH3_Shank1, Src homology 3 domain of SH3 and multiple
ankyrin repeat domains protein 1. Shank1, also called
SSTRIP (Somatostatin receptor-interacting protein), is a
brain-specific protein that plays a role in the
construction of postsynaptic density (PSD) and the
maturation of dendritic spines. Mice deficient in Shank1
show altered PSD composition, thinner PSDs, smaller
dendritic spines, and weaker basal synaptic
transmission, although synaptic plasticity is normal.
They show increased anxiety and impaired fear memory,
but also show better spatial learning. Shank proteins
carry scaffolding functions through multiple sites of
protein-protein interaction in its domain architecture,
including ankyrin (ANK) repeats, a long proline rich
region, as well as SH3, PDZ, and SAM domains. The SH3
domain of Shank binds GRIP, a scaffold protein that
binds AMPA receptors and Eph receptors/ligands. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 52
Score = 34.2 bits (78), Expect = 0.004
Identities = 17/45 (37%), Positives = 24/45 (53%)
Query: 64 SYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFV 108
Y E+ L + I VLS E G+W G+++ R G FPS+ V
Sbjct: 8 PYQSQAEGEISLSKGEKIKVLSVGEGGFWEGQVKGRVGWFPSDCV 52
Score = 34.2 bits (78), Expect = 0.004
Identities = 17/45 (37%), Positives = 24/45 (53%)
Query: 152 SYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFV 196
Y E+ L + I VLS E G+W G+++ R G FPS+ V
Sbjct: 8 PYQSQAEGEISLSKGEKIKVLSVGEGGFWEGQVKGRVGWFPSDCV 52
Score = 30.8 bits (69), Expect = 0.065
Identities = 13/30 (43%), Positives = 19/30 (63%)
Query: 13 YTAQEADELTLRKGDLITGIRVQSGGWWEG 42
Y +Q E++L KG+ I + V GG+WEG
Sbjct: 9 YQSQAEGEISLSKGEKIKVLSVGEGGFWEG 38
>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 = 34.2 bits (79), Expect = 0.005
Identities = 15/54 (27%), Positives = 27/54 (50%), Gaps = 3/54 (5%)
Query: 60 RVLFSYTPANADELELHVNDVIDVLSEVE--EGWWRGR-LRDRTGVFPSNFVEE 110
L+ +T N +EL + ++++ + E WW+ R TG+ P N+VE
Sbjct: 3 VALYPFTGENDEELSFEKGERLEIIEKPEDDPDWWKARNALGTTGLVPRNYVEV 56
Score = 34.2 bits (79), Expect = 0.005
Identities = 15/54 (27%), Positives = 27/54 (50%), Gaps = 3/54 (5%)
Query: 148 RVLFSYTPANADELELHVNDVIDVLSEVE--EGWWRGR-LRDRTGVFPSNFVEE 198
L+ +T N +EL + ++++ + E WW+ R TG+ P N+VE
Sbjct: 3 VALYPFTGENDEELSFEKGERLEIIEKPEDDPDWWKARNALGTTGLVPRNYVEV 56
>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 = 34.1 bits (78), Expect = 0.005
Identities = 15/40 (37%), Positives = 25/40 (62%), Gaps = 3/40 (7%)
Query: 11 FDYTAQEADELTLRKGDLITGIRV---QSGGWWEGLLVRE 47
+DY+A+ DEL+ ++GD++T +R + WW L RE
Sbjct: 7 WDYSAEFPDELSFKEGDMVTVLRKDGEGTDWWWASLCGRE 46
Score = 30.3 bits (68), Expect = 0.13
Identities = 15/48 (31%), Positives = 21/48 (43%), Gaps = 2/48 (4%)
Query: 62 LFSYTPANADELELHVNDVIDVLSE--VEEGWWRGRLRDRTGVFPSNF 107
L+ Y+ DEL D++ VL + WW L R G P N+
Sbjct: 6 LWDYSAEFPDELSFKEGDMVTVLRKDGEGTDWWWASLCGREGYVPRNY 53
Score = 30.3 bits (68), Expect = 0.13
Identities = 15/48 (31%), Positives = 21/48 (43%), Gaps = 2/48 (4%)
Query: 150 LFSYTPANADELELHVNDVIDVLSE--VEEGWWRGRLRDRTGVFPSNF 195
L+ Y+ DEL D++ VL + WW L R G P N+
Sbjct: 6 LWDYSAEFPDELSFKEGDMVTVLRKDGEGTDWWWASLCGREGYVPRNY 53
>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 = 34.0 bits (78), Expect = 0.005
Identities = 14/49 (28%), Positives = 24/49 (48%), Gaps = 3/49 (6%)
Query: 62 LFSYTPANADELELHVNDVIDVLSEVEEGWWRGR--LRDRTGVFPSNFV 108
+ + P+N +L+L + + VL E WW + + G PSN+V
Sbjct: 5 QYDFVPSNERDLQLKKGEKLQVLKSDGE-WWLAKSLTTGKEGYIPSNYV 52
Score = 34.0 bits (78), Expect = 0.005
Identities = 14/49 (28%), Positives = 24/49 (48%), Gaps = 3/49 (6%)
Query: 150 LFSYTPANADELELHVNDVIDVLSEVEEGWWRGR--LRDRTGVFPSNFV 196
+ + P+N +L+L + + VL E WW + + G PSN+V
Sbjct: 5 QYDFVPSNERDLQLKKGEKLQVLKSDGE-WWLAKSLTTGKEGYIPSNYV 52
>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 = 34.1 bits (78), Expect = 0.005
Identities = 15/57 (26%), Positives = 25/57 (43%), Gaps = 3/57 (5%)
Query: 60 RVLFSYTPANADELELHVNDVIDVLSEVE---EGWWRGRLRDRTGVFPSNFVEEIPA 113
+ L+ + +EL DV+ VL GWW L + G+ P+N + +P
Sbjct: 4 KALYDNAAESPEELSFRRGDVLMVLKREHGSLPGWWLCSLHGQQGIAPANRLRLLPT 60
Score = 34.1 bits (78), Expect = 0.005
Identities = 15/57 (26%), Positives = 25/57 (43%), Gaps = 3/57 (5%)
Query: 148 RVLFSYTPANADELELHVNDVIDVLSEVE---EGWWRGRLRDRTGVFPSNFVEEIPA 201
+ L+ + +EL DV+ VL GWW L + G+ P+N + +P
Sbjct: 4 KALYDNAAESPEELSFRRGDVLMVLKREHGSLPGWWLCSLHGQQGIAPANRLRLLPT 60
Score = 30.6 bits (69), Expect = 0.083
Identities = 18/59 (30%), Positives = 31/59 (52%), Gaps = 6/59 (10%)
Query: 7 ASVEFDYTAQEADELTLRKGDLITGIRVQSG---GWWEGLLVRERQAVTEQPGRRCRVL 62
A +D A+ +EL+ R+GD++ ++ + G GWW L +Q + P R R+L
Sbjct: 3 AKALYDNAAESPEELSFRRGDVLMVLKREHGSLPGWWLCSL-HGQQGIA--PANRLRLL 58
>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 = 33.9 bits (78), Expect = 0.005
Identities = 17/49 (34%), Positives = 26/49 (53%)
Query: 61 VLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVE 109
V+ Y +E+ L DV+DV+ + E GWW L D G P+ ++E
Sbjct: 4 VVADYKKQQPNEISLRAGDVVDVIEKNENGWWFVSLEDEQGWVPATYLE 52
Score = 33.9 bits (78), Expect = 0.005
Identities = 17/49 (34%), Positives = 26/49 (53%)
Query: 149 VLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVE 197
V+ Y +E+ L DV+DV+ + E GWW L D G P+ ++E
Sbjct: 4 VVADYKKQQPNEISLRAGDVVDVIEKNENGWWFVSLEDEQGWVPATYLE 52
Score = 29.3 bits (66), Expect = 0.23
Identities = 12/29 (41%), Positives = 18/29 (62%)
Query: 12 DYTAQEADELTLRKGDLITGIRVQSGGWW 40
DY Q+ +E++LR GD++ I GWW
Sbjct: 7 DYKKQQPNEISLRAGDVVDVIEKNENGWW 35
>gnl|CDD|212977 cd12044, SH3_SKAP1, Src Homology 3 domain of Src Kinase-Associated
Phosphoprotein 1. SKAP1, also called SKAP55 (Src
kinase-associated protein of 55kDa), is an immune
cell-specific adaptor protein that plays an important
role in T-cell adhesion, migration, and integrin
clustering. It is expressed exclusively in
T-lymphocytes, mast cells, and macrophages. Binding
partners include ADAP (adhesion and
degranulation-promoting adaptor protein), Fyn, Riam,
RapL, and RasGRP. It contains a pleckstrin homology (PH)
domain, a C-terminal SH3 domain, and several tyrosine
phosphorylation sites. The SH3 domain of SKAP1 is
necessary for its ability to regulate T-cell conjugation
with antigen-presenting cells and the formation of LFA-1
clusters. SKAP1 binds primarily to a proline-rich region
of ADAP through its SH3 domain; its degradation is
regulated by ADAP. A secondary interaction occurs via
the ADAP SH3 domain and the RKxxYxxY motif in SKAP1. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 53
Score = 33.7 bits (77), Expect = 0.006
Identities = 16/49 (32%), Positives = 24/49 (48%), Gaps = 2/49 (4%)
Query: 62 LFSYTPANADELELHVNDVIDVLSEVEE--GWWRGRLRDRTGVFPSNFV 108
L+ N DEL D+I +LS+ GWW G L G+ P +++
Sbjct: 5 LWDCFGDNPDELSFQRGDLIYILSKEYNMYGWWVGELNGIVGIVPKDYL 53
Score = 33.7 bits (77), Expect = 0.006
Identities = 16/49 (32%), Positives = 24/49 (48%), Gaps = 2/49 (4%)
Query: 150 LFSYTPANADELELHVNDVIDVLSEVEE--GWWRGRLRDRTGVFPSNFV 196
L+ N DEL D+I +LS+ GWW G L G+ P +++
Sbjct: 5 LWDCFGDNPDELSFQRGDLIYILSKEYNMYGWWVGELNGIVGIVPKDYL 53
Score = 31.4 bits (71), Expect = 0.037
Identities = 13/36 (36%), Positives = 19/36 (52%), Gaps = 2/36 (5%)
Query: 11 FDYTAQEADELTLRKGDLITGIRVQSG--GWWEGLL 44
+D DEL+ ++GDLI + + GWW G L
Sbjct: 6 WDCFGDNPDELSFQRGDLIYILSKEYNMYGWWVGEL 41
>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 = 34.0 bits (78), Expect = 0.006
Identities = 12/49 (24%), Positives = 26/49 (53%)
Query: 61 VLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVE 109
L+ Y + E+ + D++ +L+ + WW+ + DR G P+ +V+
Sbjct: 4 ALYDYQEKSPREVSMKKGDILTLLNSSNKDWWKVEVNDRQGFVPAAYVK 52
Score = 34.0 bits (78), Expect = 0.006
Identities = 12/49 (24%), Positives = 26/49 (53%)
Query: 149 VLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVE 197
L+ Y + E+ + D++ +L+ + WW+ + DR G P+ +V+
Sbjct: 4 ALYDYQEKSPREVSMKKGDILTLLNSSNKDWWKVEVNDRQGFVPAAYVK 52
Score = 29.8 bits (67), Expect = 0.16
Identities = 12/39 (30%), Positives = 25/39 (64%), Gaps = 1/39 (2%)
Query: 11 FDYTAQEADELTLRKGDLITGIRVQSGGWWEGLLVRERQ 49
+DY + E++++KGD++T + + WW+ + V +RQ
Sbjct: 6 YDYQEKSPREVSMKKGDILTLLNSSNKDWWK-VEVNDRQ 43
>gnl|CDD|212880 cd11947, SH3_GRAP2_N, N-terminal Src homology 3 domain of
GRB2-related adaptor protein 2. GRAP2 is also called
GADS (GRB2-related adapter downstream of Shc), GrpL,
GRB2L, Mona, or GRID (Grb2-related protein with insert
domain). It is expressed specifically in the
hematopoietic system. It plays an important role in T
cell receptor (TCR) signaling by promoting the formation
of the SLP-76:LAT complex, which couples the TCR to the
Ras pathway. It also have roles in antigen-receptor and
tyrosine kinase mediated signaling. GRAP2 is unique from
other GRB2-like adaptor proteins in that it can be
regulated by caspase cleavage. It contains an N-terminal
SH3 domain, a central SH2 domain, and a C-terminal SH3
domain. The N-terminal SH3 domain of the related protein
GRB2 binds to Sos and Sos-derived proline-rich peptides.
SH3 domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 52
Score = 33.6 bits (77), Expect = 0.006
Identities = 17/50 (34%), Positives = 25/50 (50%), Gaps = 1/50 (2%)
Query: 60 RVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVE 109
R F +T + DEL DV+ +LS + W++ L G P NFV+
Sbjct: 3 RGKFDFTASGEDELSFKKGDVLKILSSDDI-WFKAELNGEEGYVPKNFVD 51
Score = 33.6 bits (77), Expect = 0.006
Identities = 17/50 (34%), Positives = 25/50 (50%), Gaps = 1/50 (2%)
Query: 148 RVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVE 197
R F +T + DEL DV+ +LS + W++ L G P NFV+
Sbjct: 3 RGKFDFTASGEDELSFKKGDVLKILSSDDI-WFKAELNGEEGYVPKNFVD 51
Score = 29.8 bits (67), Expect = 0.17
Identities = 12/24 (50%), Positives = 18/24 (75%)
Query: 6 EASVEFDYTAQEADELTLRKGDLI 29
EA +FD+TA DEL+ +KGD++
Sbjct: 1 EARGKFDFTASGEDELSFKKGDVL 24
>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 = 33.9 bits (78), Expect = 0.006
Identities = 22/60 (36%), Positives = 32/60 (53%), Gaps = 9/60 (15%)
Query: 59 CRVLFSYTPA----NAD---ELELHVNDVIDVLSEV-EEGWWRGRLRD-RTGVFPSNFVE 109
+SY P N + EL L+ D + V ++ E+G++ G L D R G+ PSNFVE
Sbjct: 2 FVARYSYNPLRDSPNENPEAELPLNAGDYVYVYGDMDEDGFYEGELLDGRRGLVPSNFVE 61
Score = 33.9 bits (78), Expect = 0.006
Identities = 22/60 (36%), Positives = 32/60 (53%), Gaps = 9/60 (15%)
Query: 147 CRVLFSYTPA----NAD---ELELHVNDVIDVLSEV-EEGWWRGRLRD-RTGVFPSNFVE 197
+SY P N + EL L+ D + V ++ E+G++ G L D R G+ PSNFVE
Sbjct: 2 FVARYSYNPLRDSPNENPEAELPLNAGDYVYVYGDMDEDGFYEGELLDGRRGLVPSNFVE 61
>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 = 33.8 bits (78), Expect = 0.006
Identities = 16/57 (28%), Positives = 25/57 (43%), Gaps = 5/57 (8%)
Query: 57 RRCRVLFSYTPANADELELHVNDVIDVL-SEVEEGWWRGRLRDRT---GVFPSNFVE 109
R + L+ + +L DVI +L E +GW G +R+ G FP + E
Sbjct: 1 PRVKALYPHAAGGETQLSFEEGDVITLLGPEPRDGWHYGEN-ERSGRRGWFPIAYTE 56
Score = 33.8 bits (78), Expect = 0.006
Identities = 16/57 (28%), Positives = 25/57 (43%), Gaps = 5/57 (8%)
Query: 145 RRCRVLFSYTPANADELELHVNDVIDVL-SEVEEGWWRGRLRDRT---GVFPSNFVE 197
R + L+ + +L DVI +L E +GW G +R+ G FP + E
Sbjct: 1 PRVKALYPHAAGGETQLSFEEGDVITLLGPEPRDGWHYGEN-ERSGRRGWFPIAYTE 56
>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 = 33.9 bits (77), Expect = 0.006
Identities = 16/52 (30%), Positives = 30/52 (57%), Gaps = 1/52 (1%)
Query: 58 RCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVE 109
+ + L+ + + L + NDVI VL E ++ WW G ++ + G FP ++V+
Sbjct: 1 QAQALYPWRAKKDNHLNFNKNDVITVL-EQQDMWWFGEVQGQKGWFPKSYVK 51
Score = 33.9 bits (77), Expect = 0.006
Identities = 16/52 (30%), Positives = 30/52 (57%), Gaps = 1/52 (1%)
Query: 146 RCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVE 197
+ + L+ + + L + NDVI VL E ++ WW G ++ + G FP ++V+
Sbjct: 1 QAQALYPWRAKKDNHLNFNKNDVITVL-EQQDMWWFGEVQGQKGWFPKSYVK 51
>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 = 33.5 bits (77), Expect = 0.006
Identities = 8/50 (16%), Positives = 17/50 (34%)
Query: 59 CRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFV 108
+ + + +L D + VL + WW G P++ +
Sbjct: 2 YVAIADFVATDDSQLSFESGDKLLVLRKPSVDWWWAEHNGCCGYIPASHL 51
Score = 33.5 bits (77), Expect = 0.006
Identities = 8/50 (16%), Positives = 17/50 (34%)
Query: 147 CRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFV 196
+ + + +L D + VL + WW G P++ +
Sbjct: 2 YVAIADFVATDDSQLSFESGDKLLVLRKPSVDWWWAEHNGCCGYIPASHL 51
Score = 26.6 bits (59), Expect = 2.0
Identities = 9/29 (31%), Positives = 15/29 (51%)
Query: 12 DYTAQEADELTLRKGDLITGIRVQSGGWW 40
D+ A + +L+ GD + +R S WW
Sbjct: 7 DFVATDDSQLSFESGDKLLVLRKPSVDWW 35
>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 = 33.6 bits (77), Expect = 0.007
Identities = 18/52 (34%), Positives = 23/52 (44%), Gaps = 2/52 (3%)
Query: 60 RVLFSYTPANADE--LELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVE 109
RV+ P D+ L L V D++ V G W G L + G FP VE
Sbjct: 5 RVIQKRVPNAYDKTALALEVGDLVKVTKINVSGQWEGELNGKVGHFPFTHVE 56
Score = 33.6 bits (77), Expect = 0.007
Identities = 18/52 (34%), Positives = 23/52 (44%), Gaps = 2/52 (3%)
Query: 148 RVLFSYTPANADE--LELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVE 197
RV+ P D+ L L V D++ V G W G L + G FP VE
Sbjct: 5 RVIQKRVPNAYDKTALALEVGDLVKVTKINVSGQWEGELNGKVGHFPFTHVE 56
Score = 25.1 bits (55), Expect = 7.8
Identities = 13/34 (38%), Positives = 17/34 (50%), Gaps = 5/34 (14%)
Query: 11 FDYTAQEADELTLRKGDLITGIRVQSGGWWEGLL 44
+D TA L L GDL+ ++ G WEG L
Sbjct: 15 YDKTA-----LALEVGDLVKVTKINVSGQWEGEL 43
>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 = 33.4 bits (76), Expect = 0.009
Identities = 15/37 (40%), Positives = 20/37 (54%)
Query: 6 EASVEFDYTAQEADELTLRKGDLITGIRVQSGGWWEG 42
EA +FDY + A EL+ +KG + S WWEG
Sbjct: 1 EAIAKFDYVGRSARELSFKKGASLLLYHRASDDWWEG 37
Score = 28.0 bits (62), Expect = 0.68
Identities = 11/46 (23%), Positives = 18/46 (39%)
Query: 63 FSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFV 108
F Y +A EL + + + WW GR G+ P ++
Sbjct: 6 FDYVGRSARELSFKKGASLLLYHRASDDWWEGRHNGIDGLVPHQYI 51
Score = 28.0 bits (62), Expect = 0.68
Identities = 11/46 (23%), Positives = 18/46 (39%)
Query: 151 FSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFV 196
F Y +A EL + + + WW GR G+ P ++
Sbjct: 6 FDYVGRSARELSFKKGASLLLYHRASDDWWEGRHNGIDGLVPHQYI 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 = 33.1 bits (76), Expect = 0.011
Identities = 11/50 (22%), Positives = 22/50 (44%), Gaps = 1/50 (2%)
Query: 60 RVLFSYTPANADELELHVNDVIDVLS-EVEEGWWRGRLRDRTGVFPSNFV 108
+ DEL ++ VL+ E + W++ L + G+ P N++
Sbjct: 3 VAKHDFKATAEDELSFKKGSILKVLNMEDDPNWYKAELDGKEGLIPKNYI 52
Score = 33.1 bits (76), Expect = 0.011
Identities = 11/50 (22%), Positives = 22/50 (44%), Gaps = 1/50 (2%)
Query: 148 RVLFSYTPANADELELHVNDVIDVLS-EVEEGWWRGRLRDRTGVFPSNFV 196
+ DEL ++ VL+ E + W++ L + G+ P N++
Sbjct: 3 VAKHDFKATAEDELSFKKGSILKVLNMEDDPNWYKAELDGKEGLIPKNYI 52
Score = 27.7 bits (62), Expect = 0.80
Identities = 9/24 (37%), Positives = 15/24 (62%)
Query: 6 EASVEFDYTAQEADELTLRKGDLI 29
EA + D+ A DEL+ +KG ++
Sbjct: 1 EAVAKHDFKATAEDELSFKKGSIL 24
>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 = 33.2 bits (76), Expect = 0.011
Identities = 12/32 (37%), Positives = 20/32 (62%), Gaps = 1/32 (3%)
Query: 9 VEFDYTAQEADELTLRKGDLITGIRVQSGGWW 40
++DYTAQ EL+++K + +T + S WW
Sbjct: 4 AKYDYTAQGDQELSIKKNEKLTLLD-DSKHWW 34
Score = 30.1 bits (68), Expect = 0.13
Identities = 14/47 (29%), Positives = 26/47 (55%), Gaps = 2/47 (4%)
Query: 63 FSYTPANADELELHVNDVIDVLSEVEEGWWRGR-LRDRTGVFPSNFV 108
+ YT EL + N+ + +L + + WW+ + ++TG PSN+V
Sbjct: 6 YDYTAQGDQELSIKKNEKLTLLDD-SKHWWKVQNSSNQTGYVPSNYV 51
Score = 30.1 bits (68), Expect = 0.13
Identities = 14/47 (29%), Positives = 26/47 (55%), Gaps = 2/47 (4%)
Query: 151 FSYTPANADELELHVNDVIDVLSEVEEGWWRGR-LRDRTGVFPSNFV 196
+ YT EL + N+ + +L + + WW+ + ++TG PSN+V
Sbjct: 6 YDYTAQGDQELSIKKNEKLTLLDD-SKHWWKVQNSSNQTGYVPSNYV 51
>gnl|CDD|213001 cd12068, SH3_MYO15B, Src Homology 3 domain of Myosin XVb. Myosin
XVb, also called KIAA1783, was named based on its
similarity with myosin XVa. It is a transcribed and
unprocessed pseudogene whose predicted amino acid
sequence contains mutated or deleted amino acid residues
that are normally conserved and important for myosin
function. The related myosin XVa is important for normal
growth of mechanosensory stereocilia of inner ear hair
cells. Myosin XVa contains a unique N-terminal extension
followed by a motor domain, light chain-binding IQ
motifs, and a tail consisting of a pair of MyTH4-FERM
tandems separated by a SH3 domain, and a PDZ domain. SH3
domains bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP motifs;
they play a role in the regulation of enzymes by
intramolecular interactions, changing the subcellular
localization of signal pathway components and mediate
multiprotein complex assemblies.
Length = 55
Score = 32.9 bits (75), Expect = 0.014
Identities = 17/50 (34%), Positives = 27/50 (54%), Gaps = 2/50 (4%)
Query: 62 LFSYTPANADELELHVNDVIDVL--SEVEEGWWRGRLRDRTGVFPSNFVE 109
L SY + L H D+I +L + +E GW G R+G+FP++ V+
Sbjct: 5 LRSYITDDKSLLSFHRGDLIKLLPMAGLEPGWQFGSTGGRSGLFPADIVQ 54
Score = 32.9 bits (75), Expect = 0.014
Identities = 17/50 (34%), Positives = 27/50 (54%), Gaps = 2/50 (4%)
Query: 150 LFSYTPANADELELHVNDVIDVL--SEVEEGWWRGRLRDRTGVFPSNFVE 197
L SY + L H D+I +L + +E GW G R+G+FP++ V+
Sbjct: 5 LRSYITDDKSLLSFHRGDLIKLLPMAGLEPGWQFGSTGGRSGLFPADIVQ 54
>gnl|CDD|212876 cd11943, SH3_JIP1, Src homology 3 domain of JNK-interacting protein
1. JNK-interacting protein 1 (JIP1) is also called
Islet-brain 1 (IB1) or Mitogen-activated protein kinase
8-interacting protein 1 (MAPK8IP1). It is highly
expressed in neurons, where it functions as an adaptor
linking motor to cargo during axonal transport. It also
affects microtubule dynamics in neurons. JIP1 is also
found in pancreatic beta-cells, where it is involved in
regulating insulin secretion. In addition to a JNK
binding domain, JIP1 also contains SH3 and
Phosphotyrosine-binding (PTB) domains. Its SH3 domain
homodimerizes at the interface usually involved in
proline-rich ligand recognition, despite the lack of
this motif in the domain itself. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 55
Score = 32.7 bits (74), Expect = 0.015
Identities = 19/54 (35%), Positives = 30/54 (55%), Gaps = 4/54 (7%)
Query: 60 RVLFSYTPANADELELHVNDVIDVLSEVEEGWWRG---RLRDRTGVFPSNFVEE 110
R +F + P + DELEL V+D + V + E+ W+ R R G+FP+ + E
Sbjct: 3 RAVFRFVPRHPDELELEVDDPLLVEVQAEDYWYEAYNMRTGAR-GIFPAYYAIE 55
Score = 32.7 bits (74), Expect = 0.015
Identities = 19/54 (35%), Positives = 30/54 (55%), Gaps = 4/54 (7%)
Query: 148 RVLFSYTPANADELELHVNDVIDVLSEVEEGWWRG---RLRDRTGVFPSNFVEE 198
R +F + P + DELEL V+D + V + E+ W+ R R G+FP+ + E
Sbjct: 3 RAVFRFVPRHPDELELEVDDPLLVEVQAEDYWYEAYNMRTGAR-GIFPAYYAIE 55
>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 = 32.7 bits (75), Expect = 0.015
Identities = 14/50 (28%), Positives = 25/50 (50%), Gaps = 4/50 (8%)
Query: 59 CRVLFSYTPANADELELHVNDVIDVLSEVEEGWWR----GRLRDRTGVFP 104
V+ ++ P+ DEL + V + + VL+E ++GW L G+ P
Sbjct: 2 MTVISTFEPSLDDELLIKVGETVRVLAEYDDGWCLVERADGLNGDRGMVP 51
Score = 32.7 bits (75), Expect = 0.015
Identities = 14/50 (28%), Positives = 25/50 (50%), Gaps = 4/50 (8%)
Query: 147 CRVLFSYTPANADELELHVNDVIDVLSEVEEGWWR----GRLRDRTGVFP 192
V+ ++ P+ DEL + V + + VL+E ++GW L G+ P
Sbjct: 2 MTVISTFEPSLDDELLIKVGETVRVLAEYDDGWCLVERADGLNGDRGMVP 51
>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 = 32.4 bits (74), Expect = 0.016
Identities = 11/31 (35%), Positives = 17/31 (54%)
Query: 12 DYTAQEADELTLRKGDLITGIRVQSGGWWEG 42
+T+QE L L++GDL+ GW +G
Sbjct: 7 AFTSQEPGHLNLQRGDLVELTGTTDSGWLQG 37
Score = 31.7 bits (72), Expect = 0.037
Identities = 14/47 (29%), Positives = 24/47 (51%), Gaps = 1/47 (2%)
Query: 65 YTPANADELELHVNDVIDVLSEVEEGWWRGRLRD-RTGVFPSNFVEE 110
+T L L D++++ + GW +GR +G FPS+ V+E
Sbjct: 8 FTSQEPGHLNLQRGDLVELTGTTDSGWLQGRSCWGSSGFFPSSCVQE 54
Score = 31.7 bits (72), Expect = 0.037
Identities = 14/47 (29%), Positives = 24/47 (51%), Gaps = 1/47 (2%)
Query: 153 YTPANADELELHVNDVIDVLSEVEEGWWRGRLRD-RTGVFPSNFVEE 198
+T L L D++++ + GW +GR +G FPS+ V+E
Sbjct: 8 FTSQEPGHLNLQRGDLVELTGTTDSGWLQGRSCWGSSGFFPSSCVQE 54
>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 = 32.6 bits (74), Expect = 0.017
Identities = 17/50 (34%), Positives = 23/50 (46%), Gaps = 3/50 (6%)
Query: 62 LFSYTPANADELELHVNDVIDVL---SEVEEGWWRGRLRDRTGVFPSNFV 108
L+ Y + DEL D + +L E E WW RL D+ G P N +
Sbjct: 6 LWDYEGESDDELSFKEGDCMTILRREDEDETEWWWARLNDKEGYVPRNLL 55
Score = 32.6 bits (74), Expect = 0.017
Identities = 17/50 (34%), Positives = 23/50 (46%), Gaps = 3/50 (6%)
Query: 150 LFSYTPANADELELHVNDVIDVL---SEVEEGWWRGRLRDRTGVFPSNFV 196
L+ Y + DEL D + +L E E WW RL D+ G P N +
Sbjct: 6 LWDYEGESDDELSFKEGDCMTILRREDEDETEWWWARLNDKEGYVPRNLL 55
Score = 27.6 bits (61), Expect = 0.90
Identities = 11/33 (33%), Positives = 19/33 (57%), Gaps = 3/33 (9%)
Query: 11 FDYTAQEADELTLRKGDLITGIRVQSGG---WW 40
+DY + DEL+ ++GD +T +R + WW
Sbjct: 7 WDYEGESDDELSFKEGDCMTILRREDEDETEWW 39
>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 = 32.6 bits (74), Expect = 0.020
Identities = 14/57 (24%), Positives = 25/57 (43%), Gaps = 11/57 (19%)
Query: 60 RVLFSYTPANAD-------ELELHVNDVIDVLSEVEEGWWRGRLRDR----TGVFPS 105
R F Y P + L+ D+I ++++ + WW+GR+ G+ PS
Sbjct: 3 RAQFDYDPKKDNLIPCKEAGLKFQTGDIIQIINKDDSNWWQGRVEGSGEESAGLIPS 59
Score = 32.6 bits (74), Expect = 0.020
Identities = 14/57 (24%), Positives = 25/57 (43%), Gaps = 11/57 (19%)
Query: 148 RVLFSYTPANAD-------ELELHVNDVIDVLSEVEEGWWRGRLRDR----TGVFPS 193
R F Y P + L+ D+I ++++ + WW+GR+ G+ PS
Sbjct: 3 RAQFDYDPKKDNLIPCKEAGLKFQTGDIIQIINKDDSNWWQGRVEGSGEESAGLIPS 59
>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 = 32.3 bits (73), Expect = 0.020
Identities = 11/32 (34%), Positives = 18/32 (56%)
Query: 11 FDYTAQEADELTLRKGDLITGIRVQSGGWWEG 42
+DY A+ ++L+ +KG+ I G WWE
Sbjct: 7 YDYEARTTEDLSFKKGERFQIINNTEGDWWEA 38
Score = 29.6 bits (66), Expect = 0.22
Identities = 14/55 (25%), Positives = 24/55 (43%), Gaps = 4/55 (7%)
Query: 62 LFSYTPANADELELHVNDVIDVLSEVEEGWWRGR--LRDRTGVFPSNFVEEIPAE 114
L+ Y ++L + +++ E WW R + G PSN+V PA+
Sbjct: 6 LYDYEARTTEDLSFKKGERFQIINNTEGDWWEARSIATGKNGYIPSNYV--APAD 58
Score = 29.6 bits (66), Expect = 0.22
Identities = 14/55 (25%), Positives = 24/55 (43%), Gaps = 4/55 (7%)
Query: 150 LFSYTPANADELELHVNDVIDVLSEVEEGWWRGR--LRDRTGVFPSNFVEEIPAE 202
L+ Y ++L + +++ E WW R + G PSN+V PA+
Sbjct: 6 LYDYEARTTEDLSFKKGERFQIINNTEGDWWEARSIATGKNGYIPSNYV--APAD 58
>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 = 32.3 bits (73), Expect = 0.022
Identities = 15/51 (29%), Positives = 27/51 (52%), Gaps = 2/51 (3%)
Query: 63 FSYTPANADELELHVNDVIDVLSEVEEGWWRGRL--RDRTGVFPSNFVEEI 111
F++ E+ + I +L +V+E W+ GR+ R G+FP +V+ I
Sbjct: 7 FNFNGDTQVEMSFRKGERITLLRQVDENWYEGRIPGTSRQGIFPITYVDVI 57
Score = 32.3 bits (73), Expect = 0.022
Identities = 15/51 (29%), Positives = 27/51 (52%), Gaps = 2/51 (3%)
Query: 151 FSYTPANADELELHVNDVIDVLSEVEEGWWRGRL--RDRTGVFPSNFVEEI 199
F++ E+ + I +L +V+E W+ GR+ R G+FP +V+ I
Sbjct: 7 FNFNGDTQVEMSFRKGERITLLRQVDENWYEGRIPGTSRQGIFPITYVDVI 57
Score = 30.3 bits (68), Expect = 0.098
Identities = 13/37 (35%), Positives = 21/37 (56%)
Query: 6 EASVEFDYTAQEADELTLRKGDLITGIRVQSGGWWEG 42
EA +F++ E++ RKG+ IT +R W+EG
Sbjct: 2 EAIAKFNFNGDTQVEMSFRKGERITLLRQVDENWYEG 38
>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 = 32.2 bits (73), Expect = 0.026
Identities = 18/48 (37%), Positives = 30/48 (62%), Gaps = 5/48 (10%)
Query: 69 NAD---ELELHVNDVIDVLSEVEEGWWRGRL--RDRTGVFPSNFVEEI 111
NAD EL L D + +L +V++ W+ G++ +R G+FP ++VE I
Sbjct: 10 NADTNVELSLRKGDRVVLLKQVDQNWYEGKIPGTNRQGIFPVSYVEVI 57
Score = 32.2 bits (73), Expect = 0.026
Identities = 18/48 (37%), Positives = 30/48 (62%), Gaps = 5/48 (10%)
Query: 157 NAD---ELELHVNDVIDVLSEVEEGWWRGRL--RDRTGVFPSNFVEEI 199
NAD EL L D + +L +V++ W+ G++ +R G+FP ++VE I
Sbjct: 10 NADTNVELSLRKGDRVVLLKQVDQNWYEGKIPGTNRQGIFPVSYVEVI 57
Score = 31.4 bits (71), Expect = 0.052
Identities = 15/47 (31%), Positives = 26/47 (55%), Gaps = 1/47 (2%)
Query: 6 EASVEFDYTAQEADELTLRKGDLITGIRVQSGGWWEGLLV-RERQAV 51
EA ++++ A EL+LRKGD + ++ W+EG + RQ +
Sbjct: 2 EAVAKYNFNADTNVELSLRKGDRVVLLKQVDQNWYEGKIPGTNRQGI 48
>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 = 31.7 bits (72), Expect = 0.030
Identities = 12/46 (26%), Positives = 26/46 (56%)
Query: 64 SYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVE 109
+Y N DE+ V++V+ + +GWW+ R + + G P+ +++
Sbjct: 8 AYKAENEDEIGFETGVVVEVIQKNLDGWWKIRYQGKEGWAPATYLK 53
Score = 31.7 bits (72), Expect = 0.030
Identities = 12/46 (26%), Positives = 26/46 (56%)
Query: 152 SYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVE 197
+Y N DE+ V++V+ + +GWW+ R + + G P+ +++
Sbjct: 8 AYKAENEDEIGFETGVVVEVIQKNLDGWWKIRYQGKEGWAPATYLK 53
Score = 28.6 bits (64), Expect = 0.37
Identities = 9/28 (32%), Positives = 14/28 (50%)
Query: 13 YTAQEADELTLRKGDLITGIRVQSGGWW 40
Y A+ DE+ G ++ I+ GWW
Sbjct: 9 YKAENEDEIGFETGVVVEVIQKNLDGWW 36
>gnl|CDD|212864 cd11931, SH3_SH3RF3_2, Second Src Homology 3 domain of SH3 domain
containing ring finger 3, an E3 ubiquitin-protein
ligase. SH3RF3 is also called POSH2 (Plenty of SH3s 2)
or SH3MD4 (SH3 multiple domains protein 4). It is a
scaffold protein with E3 ubiquitin-protein ligase
activity. It was identified in the screen for
interacting partners of p21-activated kinase 2 (PAK2).
It may play a role in regulating JNK mediated apoptosis
in certain conditions. It also interacts with GTP-loaded
Rac1. SH3RF3 is highly homologous to SH3RF1; it also
contains an N-terminal RING finger domain and four SH3
domains. This model represents the second SH3 domain,
located C-terminal of the first SH3 domain at the
N-terminal half, of SH3RF3. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 55
Score = 31.8 bits (72), Expect = 0.031
Identities = 13/40 (32%), Positives = 23/40 (57%)
Query: 69 NADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFV 108
+ D L ++++ V+ V+E W G L D+ G+FP +V
Sbjct: 16 DKDCLTFTKDEILTVIRRVDENWAEGMLGDKIGIFPILYV 55
Score = 31.8 bits (72), Expect = 0.031
Identities = 13/40 (32%), Positives = 23/40 (57%)
Query: 157 NADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFV 196
+ D L ++++ V+ V+E W G L D+ G+FP +V
Sbjct: 16 DKDCLTFTKDEILTVIRRVDENWAEGMLGDKIGIFPILYV 55
>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 = 31.8 bits (72), Expect = 0.034
Identities = 15/47 (31%), Positives = 23/47 (48%), Gaps = 6/47 (12%)
Query: 69 NADELELHVNDVIDVLSEVEEGWWRGRLR------DRTGVFPSNFVE 109
+ L + D+I VL + +G W+G + DR G FP + VE
Sbjct: 14 DLTALNVRAGDIITVLEQHPDGRWKGHIHDNQTGNDRVGYFPPSLVE 60
Score = 31.8 bits (72), Expect = 0.034
Identities = 15/47 (31%), Positives = 23/47 (48%), Gaps = 6/47 (12%)
Query: 157 NADELELHVNDVIDVLSEVEEGWWRGRLR------DRTGVFPSNFVE 197
+ L + D+I VL + +G W+G + DR G FP + VE
Sbjct: 14 DLTALNVRAGDIITVLEQHPDGRWKGHIHDNQTGNDRVGYFPPSLVE 60
>gnl|CDD|212978 cd12045, SH3_SKAP2, Src Homology 3 domain of Src Kinase-Associated
Phosphoprotein 2. SKAP2, also called SKAP55-Related
(SKAP55R) or SKAP55 homolog (SKAP-HOM or SKAP55-HOM), is
an immune cell-specific adaptor protein that plays an
important role in adhesion and migration of B-cells and
macrophages. Binding partners include ADAP (adhesion and
degranulation-promoting adaptor protein), YopH, SHPS1,
and HPK1. SKAP2 has also been identified as a substrate
for lymphoid-specific tyrosine phosphatase (Lyp), which
has been implicated in a wide variety of autoimmune
diseases. It contains a pleckstrin homology (PH) domain,
a C-terminal SH3 domain, and several tyrosine
phosphorylation sites. Like SKAP1, SKAP2 is expected to
bind primarily to a proline-rich region of ADAP through
its SH3 domain; its degradation may be regulated by
ADAP. SH3 domains are protein interaction domains that
bind to proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 53
Score = 31.4 bits (71), Expect = 0.048
Identities = 15/49 (30%), Positives = 23/49 (46%), Gaps = 2/49 (4%)
Query: 62 LFSYTPANADELELHVNDVIDVLSEVEE--GWWRGRLRDRTGVFPSNFV 108
L+ T DEL D I +LS+ GWW G ++ G+ P ++
Sbjct: 5 LWDCTGDQPDELSFKRGDTIYILSKEYNRFGWWVGEMKGTIGLVPKAYI 53
Score = 31.4 bits (71), Expect = 0.048
Identities = 15/49 (30%), Positives = 23/49 (46%), Gaps = 2/49 (4%)
Query: 150 LFSYTPANADELELHVNDVIDVLSEVEE--GWWRGRLRDRTGVFPSNFV 196
L+ T DEL D I +LS+ GWW G ++ G+ P ++
Sbjct: 5 LWDCTGDQPDELSFKRGDTIYILSKEYNRFGWWVGEMKGTIGLVPKAYI 53
Score = 27.6 bits (61), Expect = 1.0
Identities = 12/34 (35%), Positives = 19/34 (55%), Gaps = 2/34 (5%)
Query: 11 FDYTAQEADELTLRKGDLITGIRVQSG--GWWEG 42
+D T + DEL+ ++GD I + + GWW G
Sbjct: 6 WDCTGDQPDELSFKRGDTIYILSKEYNRFGWWVG 39
>gnl|CDD|212952 cd12019, SH3_Tks5_4, Fourth Src homology 3 domain of Tyrosine
kinase substrate with five SH3 domains. Tks5, also
called SH3 and PX domain-containing protein 2A
(SH3PXD2A) or Five SH (FISH), is a scaffolding protein
and Src substrate that is localized in podosomes, which
are electron-dense structures found in Src-transformed
fibroblasts, osteoclasts, macrophages, and some invasive
cancer cells. It binds and regulates some members of the
ADAMs family of transmembrane metalloproteases, which
function as sheddases and mediators of cell and matrix
interactions. It is required for podosome formation,
degradation of the extracellular matrix, and cancer cell
invasion. Tks5 contains an N-terminal Phox homology (PX)
domain and five SH3 domains. This model characterizes
the fourth SH3 domain of Tks5. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 53
Score = 31.1 bits (70), Expect = 0.052
Identities = 13/47 (27%), Positives = 22/47 (46%)
Query: 64 SYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVEE 110
+Y E+ ++VL + E GWW R + G PS+++E
Sbjct: 7 AYQKVQDSEISFPAGVEVEVLEKQESGWWYVRFGELEGWAPSHYLEL 53
Score = 31.1 bits (70), Expect = 0.052
Identities = 13/47 (27%), Positives = 22/47 (46%)
Query: 152 SYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVEE 198
+Y E+ ++VL + E GWW R + G PS+++E
Sbjct: 7 AYQKVQDSEISFPAGVEVEVLEKQESGWWYVRFGELEGWAPSHYLEL 53
>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 = 31.1 bits (70), Expect = 0.059
Identities = 17/45 (37%), Positives = 23/45 (51%), Gaps = 6/45 (13%)
Query: 73 LELHVNDVIDVLSEVEEGWWRGRLR------DRTGVFPSNFVEEI 111
L + DVI VL + +G W+G + DR G FP + VE I
Sbjct: 18 LNVRAGDVITVLEQHPDGRWKGHIHDSQRGTDRVGYFPPSIVEVI 62
Score = 31.1 bits (70), Expect = 0.059
Identities = 17/45 (37%), Positives = 23/45 (51%), Gaps = 6/45 (13%)
Query: 161 LELHVNDVIDVLSEVEEGWWRGRLR------DRTGVFPSNFVEEI 199
L + DVI VL + +G W+G + DR G FP + VE I
Sbjct: 18 LNVRAGDVITVLEQHPDGRWKGHIHDSQRGTDRVGYFPPSIVEVI 62
>gnl|CDD|212968 cd12035, SH3_MPP1-like, Src Homology 3 domain of Membrane Protein,
Palmitoylated 1 (or MAGUK p55 subfamily member 1)-like
proteins. This subfamily includes MPP1, CASK
(Calcium/calmodulin-dependent Serine protein Kinase),
Caenorhabditis elegans lin-2, and similar proteins. MPP1
and CASK are scaffolding proteins from the MAGUK
(membrane-associated guanylate kinase) protein family,
which is characterized by the presence of a core of
three domains: PDZ, SH3, and guanylate kinase (GuK). In
addition, they also have 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. CASK
and lin-2 also contain an N-terminal
calmodulin-dependent kinase (CaMK)-like domain and two
L27 domains. MPP1 is ubiquitously-expressed and plays
roles in regulating neutrophil polarity, cell shape,
hair cell development, and neural development and
patterning of the retina. CASK is highly expressed in
the mammalian nervous system and plays roles in synaptic
protein targeting, neural development, and gene
expression regulation. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 62
Score = 31.2 bits (71), Expect = 0.063
Identities = 13/57 (22%), Positives = 24/57 (42%), Gaps = 11/57 (19%)
Query: 60 RVLFSYTPANAD-------ELELHVNDVIDVLSEVEEGWWRGRLRDRT----GVFPS 105
R F Y P+ D + D++ ++S+ + WW+ R + G+ PS
Sbjct: 3 RAQFDYDPSKDDLIPCQQAGIAFKTGDILQIISKDDHNWWQARKPGASKEPAGLIPS 59
Score = 31.2 bits (71), Expect = 0.063
Identities = 13/57 (22%), Positives = 24/57 (42%), Gaps = 11/57 (19%)
Query: 148 RVLFSYTPANAD-------ELELHVNDVIDVLSEVEEGWWRGRLRDRT----GVFPS 193
R F Y P+ D + D++ ++S+ + WW+ R + G+ PS
Sbjct: 3 RAQFDYDPSKDDLIPCQQAGIAFKTGDILQIISKDDHNWWQARKPGASKEPAGLIPS 59
>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 = 30.8 bits (69), Expect = 0.064
Identities = 15/49 (30%), Positives = 26/49 (53%)
Query: 61 VLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVE 109
V+ +Y + E+ L+V V+D++ + E GWW D G P+ +E
Sbjct: 5 VVANYQKQESSEISLYVGQVVDIIEKNESGWWFVSTADEQGWVPATCLE 53
Score = 30.8 bits (69), Expect = 0.064
Identities = 15/49 (30%), Positives = 26/49 (53%)
Query: 149 VLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVE 197
V+ +Y + E+ L+V V+D++ + E GWW D G P+ +E
Sbjct: 5 VVANYQKQESSEISLYVGQVVDIIEKNESGWWFVSTADEQGWVPATCLE 53
Score = 27.3 bits (60), Expect = 1.3
Identities = 10/29 (34%), Positives = 16/29 (55%)
Query: 12 DYTAQEADELTLRKGDLITGIRVQSGGWW 40
+Y QE+ E++L G ++ I GWW
Sbjct: 8 NYQKQESSEISLYVGQVVDIIEKNESGWW 36
>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 = 30.5 bits (69), Expect = 0.070
Identities = 9/47 (19%), Positives = 20/47 (42%)
Query: 58 RCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFP 104
R L + ++ +L D++ V++ V++ W G+ P
Sbjct: 1 VVRALCHHVATDSGQLSFRKGDILRVIARVDDDWLLCTRGSTKGLVP 47
Score = 30.5 bits (69), Expect = 0.070
Identities = 9/47 (19%), Positives = 20/47 (42%)
Query: 146 RCRVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFP 192
R L + ++ +L D++ V++ V++ W G+ P
Sbjct: 1 VVRALCHHVATDSGQLSFRKGDILRVIARVDDDWLLCTRGSTKGLVP 47
Score = 26.6 bits (59), Expect = 1.8
Identities = 8/28 (28%), Positives = 15/28 (53%)
Query: 12 DYTAQEADELTLRKGDLITGIRVQSGGW 39
+ A ++ +L+ RKGD++ I W
Sbjct: 7 HHVATDSGQLSFRKGDILRVIARVDDDW 34
>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 = 0.072
Identities = 16/36 (44%), Positives = 21/36 (58%), Gaps = 2/36 (5%)
Query: 11 FDYTAQEADELTLRKGDLITGI--RVQSGGWWEGLL 44
+D + E DEL+ ++GDLI I S GWW G L
Sbjct: 6 WDCSGNEPDELSFKRGDLIYIISKEYDSFGWWVGEL 41
Score = 29.3 bits (66), Expect = 0.21
Identities = 14/51 (27%), Positives = 26/51 (50%), Gaps = 2/51 (3%)
Query: 60 RVLFSYTPANADELELHVNDVIDVLSEVEE--GWWRGRLRDRTGVFPSNFV 108
L+ + DEL D+I ++S+ + GWW G L + G+ P +++
Sbjct: 3 MGLWDCSGNEPDELSFKRGDLIYIISKEYDSFGWWVGELNGKVGLVPKDYL 53
Score = 29.3 bits (66), Expect = 0.21
Identities = 14/51 (27%), Positives = 26/51 (50%), Gaps = 2/51 (3%)
Query: 148 RVLFSYTPANADELELHVNDVIDVLSEVEE--GWWRGRLRDRTGVFPSNFV 196
L+ + DEL D+I ++S+ + GWW G L + G+ P +++
Sbjct: 3 MGLWDCSGNEPDELSFKRGDLIYIISKEYDSFGWWVGELNGKVGLVPKDYL 53
>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 = 30.7 bits (69), Expect = 0.081
Identities = 15/38 (39%), Positives = 20/38 (52%)
Query: 7 ASVEFDYTAQEADELTLRKGDLITGIRVQSGGWWEGLL 44
A V Y A ++L+L G LI ++ S GWW G L
Sbjct: 2 AQVTTAYVASGVEQLSLSPGQLILILKKNSSGWWLGEL 39
Score = 30.3 bits (68), Expect = 0.11
Identities = 16/55 (29%), Positives = 28/55 (50%), Gaps = 5/55 (9%)
Query: 60 RVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDR-----TGVFPSNFVE 109
+V +Y + ++L L +I +L + GWW G L+ R G FP++ V+
Sbjct: 3 QVTTAYVASGVEQLSLSPGQLILILKKNSSGWWLGELQARGKKRQKGWFPASHVK 57
Score = 30.3 bits (68), Expect = 0.11
Identities = 16/55 (29%), Positives = 28/55 (50%), Gaps = 5/55 (9%)
Query: 148 RVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDR-----TGVFPSNFVE 197
+V +Y + ++L L +I +L + GWW G L+ R G FP++ V+
Sbjct: 3 QVTTAYVASGVEQLSLSPGQLILILKKNSSGWWLGELQARGKKRQKGWFPASHVK 57
>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 = 30.7 bits (70), Expect = 0.086
Identities = 15/56 (26%), Positives = 31/56 (55%), Gaps = 3/56 (5%)
Query: 57 RRCRVLFSYTPANADELELHVNDVIDVLSEVE-EGWWRGRLRD--RTGVFPSNFVE 109
+R +VL+ + + DEL + DV+ +L + + + WW + GV P++++E
Sbjct: 1 KRGKVLYDFDAQSDDELTVKEGDVVYILDDKKSKDWWMVENVSTGKEGVVPASYIE 56
Score = 30.7 bits (70), Expect = 0.086
Identities = 15/56 (26%), Positives = 31/56 (55%), Gaps = 3/56 (5%)
Query: 145 RRCRVLFSYTPANADELELHVNDVIDVLSEVE-EGWWRGRLRD--RTGVFPSNFVE 197
+R +VL+ + + DEL + DV+ +L + + + WW + GV P++++E
Sbjct: 1 KRGKVLYDFDAQSDDELTVKEGDVVYILDDKKSKDWWMVENVSTGKEGVVPASYIE 56
Score = 29.6 bits (67), Expect = 0.20
Identities = 13/36 (36%), Positives = 22/36 (61%), Gaps = 1/36 (2%)
Query: 6 EASVEFDYTAQEADELTLRKGDLITGI-RVQSGGWW 40
V +D+ AQ DELT+++GD++ + +S WW
Sbjct: 2 RGKVLYDFDAQSDDELTVKEGDVVYILDDKKSKDWW 37
>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 = 30.6 bits (69), Expect = 0.095
Identities = 15/58 (25%), Positives = 26/58 (44%), Gaps = 13/58 (22%)
Query: 60 RVLFSYTPANADEL--------ELHVNDVIDVLSEVEEGWWRGRLRDR----TGVFPS 105
R F Y P D+L V D++ ++S+ + WW+ +L + G+ PS
Sbjct: 3 RAQFEYDPLK-DDLIPCKQAGIRFRVGDILQIISKDDHNWWQAKLENSKNGTAGLIPS 59
Score = 30.6 bits (69), Expect = 0.095
Identities = 15/58 (25%), Positives = 26/58 (44%), Gaps = 13/58 (22%)
Query: 148 RVLFSYTPANADEL--------ELHVNDVIDVLSEVEEGWWRGRLRDR----TGVFPS 193
R F Y P D+L V D++ ++S+ + WW+ +L + G+ PS
Sbjct: 3 RAQFEYDPLK-DDLIPCKQAGIRFRVGDILQIISKDDHNWWQAKLENSKNGTAGLIPS 59
>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 = 30.3 bits (68), Expect = 0.10
Identities = 13/40 (32%), Positives = 24/40 (60%), Gaps = 2/40 (5%)
Query: 72 ELELHVNDVIDVLSEVEEGWWRGRLR--DRTGVFPSNFVE 109
EL + I ++ +V E W+ GR+ R G+FP+++V+
Sbjct: 16 ELSFRKGEHICLIRKVNENWYEGRITGTGRQGIFPASYVQ 55
Score = 30.3 bits (68), Expect = 0.10
Identities = 13/40 (32%), Positives = 24/40 (60%), Gaps = 2/40 (5%)
Query: 160 ELELHVNDVIDVLSEVEEGWWRGRLR--DRTGVFPSNFVE 197
EL + I ++ +V E W+ GR+ R G+FP+++V+
Sbjct: 16 ELSFRKGEHICLIRKVNENWYEGRITGTGRQGIFPASYVQ 55
Score = 28.8 bits (64), Expect = 0.39
Identities = 13/37 (35%), Positives = 20/37 (54%)
Query: 6 EASVEFDYTAQEADELTLRKGDLITGIRVQSGGWWEG 42
EA ++ + EL+ RKG+ I IR + W+EG
Sbjct: 2 EAVAQYTFKGDLEVELSFRKGEHICLIRKVNENWYEG 38
>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 = 30.3 bits (69), Expect = 0.11
Identities = 14/52 (26%), Positives = 27/52 (51%), Gaps = 2/52 (3%)
Query: 60 RVLFSYTPANADELELHVNDVIDVLSE-VEEGWWRGRL-RDRTGVFPSNFVE 109
+VL+ YT + DE+ + + + VL GW + R G+ P++++E
Sbjct: 3 KVLYDYTASGDDEVSISEGEEVTVLEPDDGSGWTKVRNGSGEEGLVPTSYIE 54
Score = 30.3 bits (69), Expect = 0.11
Identities = 14/52 (26%), Positives = 27/52 (51%), Gaps = 2/52 (3%)
Query: 148 RVLFSYTPANADELELHVNDVIDVLSE-VEEGWWRGRL-RDRTGVFPSNFVE 197
+VL+ YT + DE+ + + + VL GW + R G+ P++++E
Sbjct: 3 KVLYDYTASGDDEVSISEGEEVTVLEPDDGSGWTKVRNGSGEEGLVPTSYIE 54
Score = 29.1 bits (66), Expect = 0.29
Identities = 12/34 (35%), Positives = 20/34 (58%)
Query: 7 ASVEFDYTAQEADELTLRKGDLITGIRVQSGGWW 40
A V +DYTA DE+++ +G+ +T + G W
Sbjct: 2 AKVLYDYTASGDDEVSISEGEEVTVLEPDDGSGW 35
>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 = 30.4 bits (68), Expect = 0.11
Identities = 15/52 (28%), Positives = 30/52 (57%), Gaps = 3/52 (5%)
Query: 60 RVLFSYTPANADELELHVNDVIDVLSEVEEG--WWRGRLRD-RTGVFPSNFV 108
+ L+ ++ +N +EL +V+DV+ + E WW+ R + + G+ P N+V
Sbjct: 4 QALYPFSSSNDEELNFEKGEVMDVIEKPENDPEWWKCRKANGQVGLVPKNYV 55
Score = 30.4 bits (68), Expect = 0.11
Identities = 15/52 (28%), Positives = 30/52 (57%), Gaps = 3/52 (5%)
Query: 148 RVLFSYTPANADELELHVNDVIDVLSEVEEG--WWRGRLRD-RTGVFPSNFV 196
+ L+ ++ +N +EL +V+DV+ + E WW+ R + + G+ P N+V
Sbjct: 4 QALYPFSSSNDEELNFEKGEVMDVIEKPENDPEWWKCRKANGQVGLVPKNYV 55
>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 = 30.4 bits (68), Expect = 0.12
Identities = 11/32 (34%), Positives = 17/32 (53%)
Query: 11 FDYTAQEADELTLRKGDLITGIRVQSGGWWEG 42
+DY A+ D+L+ KG+ + G WWE
Sbjct: 7 YDYEARTEDDLSFHKGEKFQILNSSEGDWWEA 38
Score = 30.0 bits (67), Expect = 0.15
Identities = 16/49 (32%), Positives = 22/49 (44%), Gaps = 2/49 (4%)
Query: 62 LFSYTPANADELELHVNDVIDVLSEVEEGWWRGR--LRDRTGVFPSNFV 108
L+ Y D+L H + +L+ E WW R TG PSN+V
Sbjct: 6 LYDYEARTEDDLSFHKGEKFQILNSSEGDWWEARSLTTGETGYIPSNYV 54
Score = 30.0 bits (67), Expect = 0.15
Identities = 16/49 (32%), Positives = 22/49 (44%), Gaps = 2/49 (4%)
Query: 150 LFSYTPANADELELHVNDVIDVLSEVEEGWWRGR--LRDRTGVFPSNFV 196
L+ Y D+L H + +L+ E WW R TG PSN+V
Sbjct: 6 LYDYEARTEDDLSFHKGEKFQILNSSEGDWWEARSLTTGETGYIPSNYV 54
>gnl|CDD|212844 cd11911, SH3_CIP4-like, Src Homology 3 domain of
Cdc42-Interacting Protein 4. This subfamily is
composed of Cdc42-Interacting Protein 4 (CIP4), Formin
Binding Protein 17 (FBP17), FormiN Binding Protein
1-Like (FNBP1L), and similar proteins. CIP4 and FNBP1L
are Cdc42 effectors that bind Wiskott-Aldrich syndrome
protein (WASP) and function in endocytosis. CIP4 and
FBP17 bind to the Fas ligand and may be implicated in
the inflammatory response. CIP4 may also play a role in
phagocytosis. It functions downstream of Cdc42 in
PDGF-dependent actin reorganization and cell migration,
and also regulates the activity of PDGFRbeta. It uses
Src as a substrate in regulating the invasiveness of
breast tumor cells. CIP4 may also play a role in the
pathogenesis of Huntington's disease. Members of this
subfamily typically contain an N-terminal F-BAR
(FES-CIP4 Homology and Bin/Amphiphysin/Rvs) domain, a
central Cdc42-binding HR1 domain, and a C-terminal SH3
domain. The SH3 domain of CIP4 associates with Gapex-5,
a Rab31 GEF. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP
motifs. They play versatile and diverse roles in the
cell including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 55
Score = 29.9 bits (68), Expect = 0.12
Identities = 10/39 (25%), Positives = 18/39 (46%), Gaps = 1/39 (2%)
Query: 58 RCRVLFSYTPANADELELHVNDVIDVLSE-VEEGWWRGR 95
C L+ + + L + +++ VL E +GW R R
Sbjct: 1 TCTALYDFDGTSEGTLSMEEGEILLVLEEDGGDGWTRVR 39
Score = 29.9 bits (68), Expect = 0.12
Identities = 10/39 (25%), Positives = 18/39 (46%), Gaps = 1/39 (2%)
Query: 146 RCRVLFSYTPANADELELHVNDVIDVLSE-VEEGWWRGR 183
C L+ + + L + +++ VL E +GW R R
Sbjct: 1 TCTALYDFDGTSEGTLSMEEGEILLVLEEDGGDGWTRVR 39
>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 = 30.0 bits (67), Expect = 0.16
Identities = 13/40 (32%), Positives = 23/40 (57%), Gaps = 1/40 (2%)
Query: 71 DELELHVNDVIDVLS-EVEEGWWRGRLRDRTGVFPSNFVE 109
DEL D++ VL+ E ++ W++ L + G P N++E
Sbjct: 15 DELSFKRGDILKVLNEECDQNWYKAELNGKDGFIPKNYIE 54
Score = 30.0 bits (67), Expect = 0.16
Identities = 13/40 (32%), Positives = 23/40 (57%), Gaps = 1/40 (2%)
Query: 159 DELELHVNDVIDVLS-EVEEGWWRGRLRDRTGVFPSNFVE 197
DEL D++ VL+ E ++ W++ L + G P N++E
Sbjct: 15 DELSFKRGDILKVLNEECDQNWYKAELNGKDGFIPKNYIE 54
Score = 26.5 bits (58), Expect = 2.8
Identities = 10/36 (27%), Positives = 21/36 (58%)
Query: 5 IEASVEFDYTAQEADELTLRKGDLITGIRVQSGGWW 40
+EA ++D+ A DEL+ ++GD++ + + W
Sbjct: 1 MEAIAKYDFKATADDELSFKRGDILKVLNEECDQNW 36
>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 = 29.7 bits (66), Expect = 0.18
Identities = 14/49 (28%), Positives = 25/49 (51%)
Query: 61 VLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVE 109
V+ +Y E+ L +V+DV+ + E GWW + G P+ ++E
Sbjct: 4 VVSNYEKQENSEISLQAGEVVDVIEKNESGWWFVSTAEEQGWVPATYLE 52
Score = 29.7 bits (66), Expect = 0.18
Identities = 14/49 (28%), Positives = 25/49 (51%)
Query: 149 VLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVE 197
V+ +Y E+ L +V+DV+ + E GWW + G P+ ++E
Sbjct: 4 VVSNYEKQENSEISLQAGEVVDVIEKNESGWWFVSTAEEQGWVPATYLE 52
Score = 27.8 bits (61), Expect = 0.86
Identities = 10/29 (34%), Positives = 17/29 (58%)
Query: 12 DYTAQEADELTLRKGDLITGIRVQSGGWW 40
+Y QE E++L+ G+++ I GWW
Sbjct: 7 NYEKQENSEISLQAGEVVDVIEKNESGWW 35
>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 = 29.6 bits (67), Expect = 0.18
Identities = 12/51 (23%), Positives = 20/51 (39%), Gaps = 1/51 (1%)
Query: 60 RVLFSYTPANADELELHVNDVIDVLSEVEEGWWR-GRLRDRTGVFPSNFVE 109
R L+ + A + L + +L WW TG P+N+V+
Sbjct: 3 RALYDFKSAEPNTLSFSEGETFLLLERSNAHWWLVTNHSGETGYVPANYVK 53
Score = 29.6 bits (67), Expect = 0.18
Identities = 12/51 (23%), Positives = 20/51 (39%), Gaps = 1/51 (1%)
Query: 148 RVLFSYTPANADELELHVNDVIDVLSEVEEGWWR-GRLRDRTGVFPSNFVE 197
R L+ + A + L + +L WW TG P+N+V+
Sbjct: 3 RALYDFKSAEPNTLSFSEGETFLLLERSNAHWWLVTNHSGETGYVPANYVK 53
>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 = 29.9 bits (68), Expect = 0.18
Identities = 12/39 (30%), Positives = 20/39 (51%), Gaps = 4/39 (10%)
Query: 6 EASVEFDYTAQEADELTLRKGDLIT----GIRVQSGGWW 40
A E+D+ A+ DEL+ R GD + ++ + GW
Sbjct: 1 VARAEYDFVAESEDELSFRAGDKLRLAPKELQPRVRGWL 39
>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 = 29.4 bits (66), Expect = 0.21
Identities = 15/49 (30%), Positives = 26/49 (53%), Gaps = 3/49 (6%)
Query: 62 LFSYTPANADELELHVNDVIDVLSEVEEGWWRGR-LRD-RTGVFPSNFV 108
L+SY P++ +L + + +L + E WW+ + L + G P NFV
Sbjct: 5 LYSYEPSHDGDLGFEKGEKLRILEQSGE-WWKAQSLTTGQEGFIPFNFV 52
Score = 29.4 bits (66), Expect = 0.21
Identities = 15/49 (30%), Positives = 26/49 (53%), Gaps = 3/49 (6%)
Query: 150 LFSYTPANADELELHVNDVIDVLSEVEEGWWRGR-LRD-RTGVFPSNFV 196
L+SY P++ +L + + +L + E WW+ + L + G P NFV
Sbjct: 5 LYSYEPSHDGDLGFEKGEKLRILEQSGE-WWKAQSLTTGQEGFIPFNFV 52
>gnl|CDD|212833 cd11900, SH3_Nck1_1, First Src Homology 3 domain of Nck1 adaptor
protein. Nck1 (also called Nckalpha) plays a crucial
role in connecting signaling pathways of tyrosine kinase
receptors and important effectors in actin dynamics and
cytoskeletal remodeling. It binds and activates RasGAP,
resulting in the downregulation of Ras. It is also
involved in the signaling of endothilin-mediated
inhibition of cell migration. Nck adaptor proteins
regulate actin cytoskeleton dynamics by linking
proline-rich effector molecules to protein tyrosine
kinases and phosphorylated signaling intermediates. They
contain three SH3 domains and a C-terminal SH2 domain.
They function downstream of the PDGFbeta receptor and
are involved in Rho GTPase signaling and actin dynamics.
Vertebrates contain two Nck adaptor proteins: Nck1 (also
called Nckalpha) and Nck2, which show partly overlapping
functions but also bind distinct targets. The first SH3
domain of Nck1 binds the PxxDY sequence in the CD3e
cytoplasmic tail; this binding inhibits phosphorylation
by Src kinases, resulting in the downregulation of TCR
surface expression. SH3 domains are protein interaction
domains that usually bind to proline-rich ligands with
moderate affinity and selectivity, preferentially a PxxP
motif. They play versatile and diverse roles in the cell
including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 59
Score = 29.7 bits (66), Expect = 0.23
Identities = 17/48 (35%), Positives = 27/48 (56%), Gaps = 2/48 (4%)
Query: 63 FSYTPANADELELHVNDVIDVLSEVEEGWWRGR-LRDRTGVFPSNFVE 109
F Y EL++ N+ + +L + + WWR R ++TG PSN+VE
Sbjct: 9 FDYVAQQDQELDIKKNERLWLLDD-SKSWWRVRNAMNKTGFVPSNYVE 55
Score = 29.7 bits (66), Expect = 0.23
Identities = 17/48 (35%), Positives = 27/48 (56%), Gaps = 2/48 (4%)
Query: 151 FSYTPANADELELHVNDVIDVLSEVEEGWWRGR-LRDRTGVFPSNFVE 197
F Y EL++ N+ + +L + + WWR R ++TG PSN+VE
Sbjct: 9 FDYVAQQDQELDIKKNERLWLLDD-SKSWWRVRNAMNKTGFVPSNYVE 55
>gnl|CDD|212832 cd11899, SH3_Nck2_1, First Src Homology 3 domain of Nck2 adaptor
protein. Nck2 (also called Nckbeta or Growth factor
receptor-bound protein 4, Grb4) plays a crucial role in
connecting signaling pathways of tyrosine kinase
receptors and important effectors in actin dynamics and
cytoskeletal remodeling. It binds neuronal signaling
proteins such as ephrinB and Disabled-1 (Dab-1)
exclusively. Nck adaptor proteins regulate actin
cytoskeleton dynamics by linking proline-rich effector
molecules to protein tyrosine kinases and phosphorylated
signaling intermediates. They contain three SH3 domains
and a C-terminal SH2 domain. They function downstream of
the PDGFbeta receptor and are involved in Rho GTPase
signaling and actin dynamics. Vertebrates contain two
Nck adaptor proteins: Nck1 (also called Nckalpha) and
Nck2, which show partly overlapping functions but also
bind distinct targets. The first SH3 domain of Nck2
binds the PxxDY sequence in the CD3e cytoplasmic tail;
this binding inhibits phosphorylation by Src kinases,
resulting in the downregulation of TCR surface
expression. SH3 domains are protein interaction domains
that usually bind to proline-rich ligands with moderate
affinity and selectivity, preferentially a PxxP motif.
They play versatile and diverse roles in the cell
including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 58
Score = 29.3 bits (65), Expect = 0.23
Identities = 18/48 (37%), Positives = 28/48 (58%), Gaps = 2/48 (4%)
Query: 63 FSYTPANADELELHVNDVIDVLSEVEEGWWRGR-LRDRTGVFPSNFVE 109
+ YT EL++ N+ + +L + + WWR R +RTG PSN+VE
Sbjct: 10 WDYTAQQDQELDIKKNERLWLLDD-SKTWWRVRNAANRTGYVPSNYVE 56
Score = 29.3 bits (65), Expect = 0.23
Identities = 18/48 (37%), Positives = 28/48 (58%), Gaps = 2/48 (4%)
Query: 151 FSYTPANADELELHVNDVIDVLSEVEEGWWRGR-LRDRTGVFPSNFVE 197
+ YT EL++ N+ + +L + + WWR R +RTG PSN+VE
Sbjct: 10 WDYTAQQDQELDIKKNERLWLLDD-SKTWWRVRNAANRTGYVPSNYVE 56
>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 = 0.23
Identities = 11/49 (22%), Positives = 22/49 (44%), Gaps = 2/49 (4%)
Query: 60 RVLFSYTPANADELELHVNDVIDVLSEVEEGWW--RGRLRDRTGVFPSN 106
V+ Y D+L + D++ ++ E +EG W + + G P+
Sbjct: 3 TVVADYEKGGPDDLTVKSGDLVQLIHEGDEGQWLVKNLSTRKEGWVPAA 51
Score = 29.2 bits (66), Expect = 0.23
Identities = 11/49 (22%), Positives = 22/49 (44%), Gaps = 2/49 (4%)
Query: 148 RVLFSYTPANADELELHVNDVIDVLSEVEEGWW--RGRLRDRTGVFPSN 194
V+ Y D+L + D++ ++ E +EG W + + G P+
Sbjct: 3 TVVADYEKGGPDDLTVKSGDLVQLIHEGDEGQWLVKNLSTRKEGWVPAA 51
Score = 26.1 bits (58), Expect = 3.7
Identities = 14/40 (35%), Positives = 20/40 (50%), Gaps = 3/40 (7%)
Query: 8 SVEFDYTAQEADELTLRKGDLITGIRVQSGGWWEGLLVRE 47
+V DY D+LT++ GDL+ I G W LV+
Sbjct: 3 TVVADYEKGGPDDLTVKSGDLVQLIHEGDEGQW---LVKN 39
>gnl|CDD|212736 cd11802, SH3_Endophilin_B, Src homology 3 domain of Endophilin-B.
Endophilins play roles in synaptic vesicle formation,
virus budding, mitochondrial morphology maintenance,
receptor-mediated endocytosis inhibition, and endosomal
sorting. They are classified into two types, A and B.
Vertebrates contain two endophilin-B isoforms.
Endophilin-B proteins are cytoplasmic proteins expressed
mainly in the heart, placenta, and skeletal muscle.
Endophilins contain an N-terminal N-BAR domain (BAR
domain with an additional N-terminal amphipathic helix),
followed by a variable region containing proline
clusters, and a C-terminal SH3 domain. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 52
Score = 29.2 bits (66), Expect = 0.24
Identities = 15/52 (28%), Positives = 26/52 (50%), Gaps = 2/52 (3%)
Query: 58 RCRVLFSYTPANADELELHVNDVIDV--LSEVEEGWWRGRLRDRTGVFPSNF 107
+ RVL+ Y ++ EL L ++VI V L ++E + G + G P +
Sbjct: 1 KARVLYDYDAEDSTELSLLADEVITVYELPGMDEDYMMGERGSQRGKVPVAY 52
Score = 29.2 bits (66), Expect = 0.24
Identities = 15/52 (28%), Positives = 26/52 (50%), Gaps = 2/52 (3%)
Query: 146 RCRVLFSYTPANADELELHVNDVIDV--LSEVEEGWWRGRLRDRTGVFPSNF 195
+ RVL+ Y ++ EL L ++VI V L ++E + G + G P +
Sbjct: 1 KARVLYDYDAEDSTELSLLADEVITVYELPGMDEDYMMGERGSQRGKVPVAY 52
>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 = 29.2 bits (65), Expect = 0.26
Identities = 15/50 (30%), Positives = 25/50 (50%), Gaps = 1/50 (2%)
Query: 62 LFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRD-RTGVFPSNFVEE 110
L+ Y + EL L N+ +L E WWR + ++ G PS+++ E
Sbjct: 6 LYDYQTNDPQELALRYNEEYHLLDSSEIHWWRVQDKNGHEGYVPSSYLVE 55
Score = 29.2 bits (65), Expect = 0.26
Identities = 15/50 (30%), Positives = 25/50 (50%), Gaps = 1/50 (2%)
Query: 150 LFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRD-RTGVFPSNFVEE 198
L+ Y + EL L N+ +L E WWR + ++ G PS+++ E
Sbjct: 6 LYDYQTNDPQELALRYNEEYHLLDSSEIHWWRVQDKNGHEGYVPSSYLVE 55
>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 = 29.0 bits (65), Expect = 0.28
Identities = 12/50 (24%), Positives = 23/50 (46%), Gaps = 2/50 (4%)
Query: 62 LFSYTPANADELELHVNDVIDVLSEVEEGWW--RGRLRDRTGVFPSNFVE 109
L+ + P + +EL ++ +L + +GW +TG+ P FV
Sbjct: 5 LYDFEPEHDNELGFAEGQILFILYKHGQGWLIAEDESGGKTGLVPEEFVS 54
Score = 29.0 bits (65), Expect = 0.28
Identities = 12/50 (24%), Positives = 23/50 (46%), Gaps = 2/50 (4%)
Query: 150 LFSYTPANADELELHVNDVIDVLSEVEEGWW--RGRLRDRTGVFPSNFVE 197
L+ + P + +EL ++ +L + +GW +TG+ P FV
Sbjct: 5 LYDFEPEHDNELGFAEGQILFILYKHGQGWLIAEDESGGKTGLVPEEFVS 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 = 29.2 bits (65), Expect = 0.30
Identities = 12/46 (26%), Positives = 24/46 (52%)
Query: 65 YTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVEE 110
YT DE+ ++V+ + EGWW R + G P++++++
Sbjct: 9 YTSQGKDEIGFEKGVTVEVIQKNLEGWWYIRYLGKEGWAPASYLKK 54
Score = 29.2 bits (65), Expect = 0.30
Identities = 12/46 (26%), Positives = 24/46 (52%)
Query: 153 YTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVEE 198
YT DE+ ++V+ + EGWW R + G P++++++
Sbjct: 9 YTSQGKDEIGFEKGVTVEVIQKNLEGWWYIRYLGKEGWAPASYLKK 54
Score = 28.8 bits (64), Expect = 0.35
Identities = 11/28 (39%), Positives = 15/28 (53%)
Query: 13 YTAQEADELTLRKGDLITGIRVQSGGWW 40
YT+Q DE+ KG + I+ GWW
Sbjct: 9 YTSQGKDEIGFEKGVTVEVIQKNLEGWW 36
>gnl|CDD|212999 cd12066, SH3_GRAF3, Src Homology 3 domain of GTPase Regulator
Associated with Focal adhesion kinase 3. GRAF3 is also
called Rho GTPase activating protein 42 (ARHGAP42) or
ARHGAP10-like. Though its function has not been
characterized, it may be a GAP with activity towards
RhoA and Cdc42, based on its similarity to GRAF and
GRAF2. It contains an N-terminal BAR domain, followed by
a Pleckstrin homology (PH) domain, a Rho GAP domain, and
a C-terminal SH3 domain. The SH3 domain of GRAF and
GRAF2 binds PKNbeta, a target of the small GTPase Rho.
SH3 domains bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP motifs;
they play a role in the regulation of enzymes by
intramolecular interactions, changing the subcellular
localization of signal pathway components and mediate
multiprotein complex assemblies.
Length = 55
Score = 29.3 bits (65), Expect = 0.31
Identities = 10/28 (35%), Positives = 15/28 (53%)
Query: 82 DVLSEVEEGWWRGRLRDRTGVFPSNFVE 109
+V VE GW + +TG+ P N+V
Sbjct: 26 NVYPSVEPGWLKATYEGKTGLVPENYVV 53
Score = 29.3 bits (65), Expect = 0.31
Identities = 10/28 (35%), Positives = 15/28 (53%)
Query: 170 DVLSEVEEGWWRGRLRDRTGVFPSNFVE 197
+V VE GW + +TG+ P N+V
Sbjct: 26 NVYPSVEPGWLKATYEGKTGLVPENYVV 53
>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 = 28.8 bits (65), Expect = 0.32
Identities = 14/53 (26%), Positives = 23/53 (43%), Gaps = 3/53 (5%)
Query: 60 RVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTG---VFPSNFVE 109
VL+ + DEL+ D I + + W+ + R G + P +FVE
Sbjct: 3 IVLYDFKAERPDELDAKAGDAIIICAHSNYEWFVAKPIGRLGGPGLIPVSFVE 55
Score = 28.8 bits (65), Expect = 0.32
Identities = 14/53 (26%), Positives = 23/53 (43%), Gaps = 3/53 (5%)
Query: 148 RVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTG---VFPSNFVE 197
VL+ + DEL+ D I + + W+ + R G + P +FVE
Sbjct: 3 IVLYDFKAERPDELDAKAGDAIIICAHSNYEWFVAKPIGRLGGPGLIPVSFVE 55
Score = 26.9 bits (60), Expect = 1.9
Identities = 9/24 (37%), Positives = 13/24 (54%)
Query: 7 ASVEFDYTAQEADELTLRKGDLIT 30
V +D+ A+ DEL + GD I
Sbjct: 2 GIVLYDFKAERPDELDAKAGDAII 25
>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 = 29.1 bits (65), Expect = 0.33
Identities = 14/44 (31%), Positives = 22/44 (50%), Gaps = 1/44 (2%)
Query: 11 FDYTAQEADELTLRKGDLITGIRVQSGGWWEGLLVRERQAVTEQ 54
+D+ A+ +EL+ + GD I +SG WW L + V Q
Sbjct: 6 WDFKARGDEELSFQAGDQFR-IAERSGDWWTALKLDRAGGVVAQ 48
Score = 28.3 bits (63), Expect = 0.54
Identities = 11/55 (20%), Positives = 18/55 (32%), Gaps = 7/55 (12%)
Query: 62 LFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDR------TGVFPSNFVEE 110
L+ + +EL D + WW DR G P+N++
Sbjct: 5 LWDFKARGDEELSFQAGDQFRIAER-SGDWWTALKLDRAGGVVAQGFVPNNYLAR 58
Score = 28.3 bits (63), Expect = 0.54
Identities = 11/55 (20%), Positives = 18/55 (32%), Gaps = 7/55 (12%)
Query: 150 LFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDR------TGVFPSNFVEE 198
L+ + +EL D + WW DR G P+N++
Sbjct: 5 LWDFKARGDEELSFQAGDQFRIAER-SGDWWTALKLDRAGGVVAQGFVPNNYLAR 58
>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 = 28.8 bits (64), Expect = 0.33
Identities = 15/53 (28%), Positives = 25/53 (47%), Gaps = 1/53 (1%)
Query: 58 RCRVLFSYTPANADELELHVNDVI-DVLSEVEEGWWRGRLRDRTGVFPSNFVE 109
+ + ++ ++ EL V + DV E GW G L + G+ P N+VE
Sbjct: 1 KAKAVYPCEAEHSSELSFEVGAIFEDVTLSREPGWLEGTLNGKRGLIPENYVE 53
Score = 28.8 bits (64), Expect = 0.33
Identities = 15/53 (28%), Positives = 25/53 (47%), Gaps = 1/53 (1%)
Query: 146 RCRVLFSYTPANADELELHVNDVI-DVLSEVEEGWWRGRLRDRTGVFPSNFVE 197
+ + ++ ++ EL V + DV E GW G L + G+ P N+VE
Sbjct: 1 KAKAVYPCEAEHSSELSFEVGAIFEDVTLSREPGWLEGTLNGKRGLIPENYVE 53
>gnl|CDD|187709 cd09613, Jacalin_metallopeptidase_like, Jacalin-like lectin
domain of putative metalloproteases and similar
proteins. Members of this family, which appears
restricted to fungi, co-occur with protein domains that
contain an HExxH motif characteristic of
metallopeptidases. They have not been functionally
characterized.
Length = 124
Score = 30.1 bits (68), Expect = 0.37
Identities = 15/52 (28%), Positives = 22/52 (42%), Gaps = 6/52 (11%)
Query: 7 ASVEFDYTAQEADELTLRKGDLITGIRVQSGGWWEGLLVRERQAVTEQPGRR 58
ASV F + L+ G+ I G V+ G W + + Q +T GR
Sbjct: 37 ASVLFGNRGGSPTDFELQPGEQILGFNVRCGAWIDAI-----QILTSL-GRT 82
>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 = 28.9 bits (65), Expect = 0.41
Identities = 20/58 (34%), Positives = 30/58 (51%), Gaps = 3/58 (5%)
Query: 57 RRCRVLFSYTPA-NADELELHVNDVIDVLSEVEEGW-WRGRLR-DRTGVFPSNFVEEI 111
RR R + Y + DEL D+ V +E+E+GW W LR +G+ + VEE+
Sbjct: 2 RRVRAILPYNKVPDTDELSFQKGDIFVVHNELEDGWLWVTSLRTGESGLVFRDLVEEL 59
Score = 28.9 bits (65), Expect = 0.41
Identities = 20/58 (34%), Positives = 30/58 (51%), Gaps = 3/58 (5%)
Query: 145 RRCRVLFSYTPA-NADELELHVNDVIDVLSEVEEGW-WRGRLR-DRTGVFPSNFVEEI 199
RR R + Y + DEL D+ V +E+E+GW W LR +G+ + VEE+
Sbjct: 2 RRVRAILPYNKVPDTDELSFQKGDIFVVHNELEDGWLWVTSLRTGESGLVFRDLVEEL 59
>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 = 28.7 bits (64), Expect = 0.52
Identities = 20/69 (28%), Positives = 32/69 (46%), Gaps = 15/69 (21%)
Query: 58 RCRVLFSYTPANADELELHVNDVIDVL-----SEVEEGWWRG-------RLRD---RTGV 102
+ L + AN+DELEL D++ V+ ++ + GW G + RD G+
Sbjct: 4 KVETLHDFEAANSDELELKRGDIVLVVPSETAADQDAGWLTGVKESDWLQYRDASAYKGL 63
Query: 103 FPSNFVEEI 111
FP NF +
Sbjct: 64 FPENFTRRL 72
Score = 28.7 bits (64), Expect = 0.52
Identities = 20/69 (28%), Positives = 32/69 (46%), Gaps = 15/69 (21%)
Query: 146 RCRVLFSYTPANADELELHVNDVIDVL-----SEVEEGWWRG-------RLRD---RTGV 190
+ L + AN+DELEL D++ V+ ++ + GW G + RD G+
Sbjct: 4 KVETLHDFEAANSDELELKRGDIVLVVPSETAADQDAGWLTGVKESDWLQYRDASAYKGL 63
Query: 191 FPSNFVEEI 199
FP NF +
Sbjct: 64 FPENFTRRL 72
Score = 26.8 bits (59), Expect = 2.8
Identities = 12/43 (27%), Positives = 21/43 (48%), Gaps = 5/43 (11%)
Query: 6 EASVEFDYTAQEADELTLRKGDLITGIRV-----QSGGWWEGL 43
+ D+ A +DEL L++GD++ + Q GW G+
Sbjct: 4 KVETLHDFEAANSDELELKRGDIVLVVPSETAADQDAGWLTGV 46
>gnl|CDD|212694 cd11760, SH3_MIA_like, Src Homology 3 domain of Melanoma Inhibitory
Activity protein and similar proteins. MIA is a single
domain protein that adopts a SH3 domain-like fold; it
contains an additional antiparallel beta sheet and two
disulfide bonds compared to classical SH3 domains. MIA
is secreted from malignant melanoma cells and it plays
an important role in melanoma development and invasion.
MIA is expressed by chondrocytes in normal tissues and
may be important in the cartilage cell phenotype. Unlike
classical SH3 domains, MIA does not bind proline-rich
ligands. MIA is a member of the recently identified
family that also includes MIA-like (MIAL), MIA2, and
MIA3 (also called TANGO); the biological functions of
this family are not yet fully understood.
Length = 76
Score = 29.0 bits (65), Expect = 0.56
Identities = 18/64 (28%), Positives = 23/64 (35%), Gaps = 6/64 (9%)
Query: 53 EQPGRRCRVLFSYTPANADELELHVNDVIDVLSEVEEGW---WRGRLRD---RTGVFPSN 106
P R R L Y + L D I V S++ W G + G FP N
Sbjct: 8 SNPISRARALEDYHGPDCRFLNFKKGDTIYVYSKLAGERQDLWAGSVGGDAGLFGYFPKN 67
Query: 107 FVEE 110
V+E
Sbjct: 68 LVQE 71
Score = 28.6 bits (64), Expect = 0.65
Identities = 17/59 (28%), Positives = 22/59 (37%), Gaps = 6/59 (10%)
Query: 146 RCRVLFSYTPANADELELHVNDVIDVLSEVEEGW---WRGRLRD---RTGVFPSNFVEE 198
R R L Y + L D I V S++ W G + G FP N V+E
Sbjct: 13 RARALEDYHGPDCRFLNFKKGDTIYVYSKLAGERQDLWAGSVGGDAGLFGYFPKNLVQE 71
>gnl|CDD|212698 cd11764, SH3_Eps8, Src Homology 3 domain of Epidermal growth
factor receptor kinase substrate 8 and similar
proteins. This group is composed of Eps8 and Eps8-like
proteins including Eps8-like 1-3, among others. These
proteins contain N-terminal Phosphotyrosine-binding
(PTB), central SH3, and C-terminal effector domains.
Eps8 binds either Abi1 (also called E3b1) or Rab5
GTPase activating protein RN-tre through its SH3
domain. With Abi1 and Sos1, it becomes part of a
trimeric complex that is required to activate Rac.
Together with RN-tre, it inhibits the internalization
of EGFR. The SH3 domains of Eps8 and similar proteins
recognize peptides containing a PxxDY motif, instead of
the classical PxxP motif. SH3 domains are protein
interaction domains that usually bind to proline-rich
ligands with moderate affinity and selectivity. They
play versatile and diverse roles in the cell including
the regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 54
Score = 28.0 bits (63), Expect = 0.60
Identities = 11/35 (31%), Positives = 21/35 (60%), Gaps = 1/35 (2%)
Query: 7 ASVEFDYTAQEADELTLRKGDLITGIRVQSGGWWE 41
V +D+TA+ + EL++ KG+ + + S WW+
Sbjct: 2 VRVLYDFTARNSKELSVLKGEYLEVLD-DSRQWWK 35
Score = 28.0 bits (63), Expect = 0.72
Identities = 17/51 (33%), Positives = 28/51 (54%), Gaps = 2/51 (3%)
Query: 60 RVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGR-LRDRTGVFPSNFVE 109
RVL+ +T N+ EL + + ++VL + WW+ R R + G P N +E
Sbjct: 3 RVLYDFTARNSKELSVLKGEYLEVL-DDSRQWWKVRNSRGQVGYVPHNILE 52
Score = 28.0 bits (63), Expect = 0.72
Identities = 17/51 (33%), Positives = 28/51 (54%), Gaps = 2/51 (3%)
Query: 148 RVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGR-LRDRTGVFPSNFVE 197
RVL+ +T N+ EL + + ++VL + WW+ R R + G P N +E
Sbjct: 3 RVLYDFTARNSKELSVLKGEYLEVL-DDSRQWWKVRNSRGQVGYVPHNILE 52
>gnl|CDD|212877 cd11944, SH3_Endophilin_B2, Src homology 3 domain of Endophilin-B2.
Endophilin-B2, also called SH3GLB2 (SH3-domain
GRB2-like endophilin B2), is a cytoplasmic protein that
interacts with the apoptosis inducer Bax. It is
overexpressed in prostate cancer metastasis and has been
identified as a cancer antigen with potential utility in
immunotherapy. Endophilins play roles in synaptic
vesicle formation, virus budding, mitochondrial
morphology maintenance, receptor-mediated endocytosis
inhibition, and endosomal sorting. They contain an
N-terminal N-BAR domain (BAR domain with an additional
N-terminal amphipathic helix), followed by a variable
region containing proline clusters, and a C-terminal SH3
domain. Endophilin-B2 forms homo- and heterodimers (with
endophilin-B1) through its BAR domain. The related
protein endophilin-B1 interacts with amphiphysin 1 and
dynamin 1 through its SH3 domain. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 55
Score = 28.0 bits (62), Expect = 0.71
Identities = 16/54 (29%), Positives = 29/54 (53%), Gaps = 2/54 (3%)
Query: 58 RCRVLFSYTPANADELELHVNDVIDV--LSEVEEGWWRGRLRDRTGVFPSNFVE 109
+ RVL+ Y A++ EL L +++I V L ++ W G ++ G P ++E
Sbjct: 1 KARVLYDYEAADSSELALLADELITVYSLPGMDPDWLIGERGNQKGKVPVTYLE 54
Score = 28.0 bits (62), Expect = 0.71
Identities = 16/54 (29%), Positives = 29/54 (53%), Gaps = 2/54 (3%)
Query: 146 RCRVLFSYTPANADELELHVNDVIDV--LSEVEEGWWRGRLRDRTGVFPSNFVE 197
+ RVL+ Y A++ EL L +++I V L ++ W G ++ G P ++E
Sbjct: 1 KARVLYDYEAADSSELALLADELITVYSLPGMDPDWLIGERGNQKGKVPVTYLE 54
>gnl|CDD|115849 pfam07220, DUF1420, Protein of unknown function (DUF1420). This
family consists of several hypothetical putative
lipoproteins which seem to be found specifically in the
bacterium Leptospira interrogans. Members of this family
are typically around 670 resides in length and their
function is unknown.
Length = 672
Score = 30.7 bits (69), Expect = 0.71
Identities = 12/32 (37%), Positives = 19/32 (59%), Gaps = 4/32 (12%)
Query: 69 NADELELHVNDVIDVLSE----VEEGWWRGRL 96
NAD L+ H+ I++L++ GW+ GRL
Sbjct: 181 NADSLDYHIGVAIEILNQGKMPAFLGWFHGRL 212
Score = 30.7 bits (69), Expect = 0.71
Identities = 12/32 (37%), Positives = 19/32 (59%), Gaps = 4/32 (12%)
Query: 157 NADELELHVNDVIDVLSE----VEEGWWRGRL 184
NAD L+ H+ I++L++ GW+ GRL
Sbjct: 181 NADSLDYHIGVAIEILNQGKMPAFLGWFHGRL 212
>gnl|CDD|213019 cd12143, SH3_ARHGAP9, Src Homology 3 domain of Rho
GTPase-activating protein 9 and similar proteins. Rho
GTPase-activating proteins (RhoGAPs or ARHGAPs) bind to
Rho proteins and enhance the hydrolysis rates of bound
GTP. ARHGAP9 functions as a GAP for Rac and Cdc42, but
not for RhoA. It negatively regulates cell migration
and adhesion. It also acts as a docking protein for the
MAP kinases Erk2 and p38alpha, and may facilitate
cross-talk between the Rho GTPase and MAPK pathways to
control actin remodeling. It contains SH3, WW,
Pleckstin homology (PH), and RhoGAP domains. SH3
domains bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP
motifs; they play a role in the regulation of enzymes
by intramolecular interactions, changing the
subcellular localization of signal pathway components
and mediate multiprotein complex assemblies.
Length = 57
Score = 28.0 bits (62), Expect = 0.74
Identities = 10/52 (19%), Positives = 23/52 (44%), Gaps = 2/52 (3%)
Query: 4 VIEASVEFDYTAQEADELTLRKGDLITGIRVQSGGWWEGLLVRERQAVTEQP 55
+ A + YT + ++++ +G+ +R + WW + R T +P
Sbjct: 1 QLCALYAYQYTGADGRQVSIAEGERFLLLRKTNSDWW--QVRRLEAPSTSRP 50
>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 = 27.8 bits (62), Expect = 0.76
Identities = 12/50 (24%), Positives = 23/50 (46%), Gaps = 1/50 (2%)
Query: 60 RVLFSYTPANADELELHVNDVIDVLSEVEEGW-WRGRLRDRTGVFPSNFV 108
+ L+ Y +EL + D +DV + + W G + G P+N++
Sbjct: 3 KALYDYDKQTEEELSFNEGDTLDVYDDSDSDWILVGFNGTQFGFVPANYI 52
Score = 27.8 bits (62), Expect = 0.76
Identities = 12/50 (24%), Positives = 23/50 (46%), Gaps = 1/50 (2%)
Query: 148 RVLFSYTPANADELELHVNDVIDVLSEVEEGW-WRGRLRDRTGVFPSNFV 196
+ L+ Y +EL + D +DV + + W G + G P+N++
Sbjct: 3 KALYDYDKQTEEELSFNEGDTLDVYDDSDSDWILVGFNGTQFGFVPANYI 52
>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 = 27.9 bits (62), Expect = 0.78
Identities = 12/50 (24%), Positives = 24/50 (48%), Gaps = 1/50 (2%)
Query: 62 LFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRD-RTGVFPSNFVEE 110
++ + P +L L + +L + + WW+ R + + G PSN+V
Sbjct: 6 MYDFQPTEPHDLRLETGEEYVILEKNDVHWWKARDKYGKEGYIPSNYVTG 55
Score = 27.9 bits (62), Expect = 0.78
Identities = 12/50 (24%), Positives = 24/50 (48%), Gaps = 1/50 (2%)
Query: 150 LFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRD-RTGVFPSNFVEE 198
++ + P +L L + +L + + WW+ R + + G PSN+V
Sbjct: 6 MYDFQPTEPHDLRLETGEEYVILEKNDVHWWKARDKYGKEGYIPSNYVTG 55
>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 = 27.7 bits (62), Expect = 0.86
Identities = 11/31 (35%), Positives = 15/31 (48%), Gaps = 1/31 (3%)
Query: 11 FDYTAQEADELTLRKGDLITGI-RVQSGGWW 40
D+ E EL+ R+GD I I + G W
Sbjct: 6 MDFEGVEPGELSFRQGDSIEIIGDLIPGLQW 36
Score = 27.7 bits (62), Expect = 0.90
Identities = 13/55 (23%), Positives = 21/55 (38%), Gaps = 4/55 (7%)
Query: 58 RCRVLFSYTPANADELELHVNDVIDVLSEVEEG--WWRGR--LRDRTGVFPSNFV 108
C + EL D I+++ ++ G W+ GR R G P+N
Sbjct: 1 SCTAKMDFEGVEPGELSFRQGDSIEIIGDLIPGLQWFVGRSKSSGRVGFVPTNHF 55
Score = 27.7 bits (62), Expect = 0.90
Identities = 13/55 (23%), Positives = 21/55 (38%), Gaps = 4/55 (7%)
Query: 146 RCRVLFSYTPANADELELHVNDVIDVLSEVEEG--WWRGR--LRDRTGVFPSNFV 196
C + EL D I+++ ++ G W+ GR R G P+N
Sbjct: 1 SCTAKMDFEGVEPGELSFRQGDSIEIIGDLIPGLQWFVGRSKSSGRVGFVPTNHF 55
>gnl|CDD|212891 cd11958, SH3_RUSC1, Src homology 3 domain of RUN and SH3
domain-containing protein 1. 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. RUSC proteins are
adaptor proteins consisting of RUN, leucine zipper, and
SH3 domains. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate affinity
and selectivity, preferentially to PxxP motifs. They
play versatile and diverse roles in the cell including
the regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 51
Score = 27.5 bits (61), Expect = 1.00
Identities = 12/37 (32%), Positives = 18/37 (48%)
Query: 68 ANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFP 104
+ +L + + VL V+E W R R DR G+ P
Sbjct: 10 GSESQLSFRKGEELQVLGTVDEDWIRCRRGDREGLVP 46
Score = 27.5 bits (61), Expect = 1.00
Identities = 12/37 (32%), Positives = 18/37 (48%)
Query: 156 ANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFP 192
+ +L + + VL V+E W R R DR G+ P
Sbjct: 10 GSESQLSFRKGEELQVLGTVDEDWIRCRRGDREGLVP 46
>gnl|CDD|212795 cd11861, SH3_DLG-like, Src Homology 3 domain of Disks large homolog
proteins. The DLG-like proteins are scaffolding
proteins that cluster at synapses and are also called
PSD (postsynaptic density)-95 proteins or SAPs
(synapse-associated proteins). They play important roles
in synaptic development and plasticity, cell polarity,
migration and proliferation. They are members of the
MAGUK (membrane-associated guanylate kinase) protein
family, which is characterized by the presence of a core
of three domains: PDZ, SH3, and guanylate kinase (GuK).
The GuK domain in MAGUK proteins is enzymatically
inactive; instead, the domain mediates protein-protein
interactions and associates intramolecularly with the
SH3 domain. DLG-like proteins contain three PDZ domains
and varying N-terminal regions. All DLG proteins exist
as alternatively-spliced isoforms. Vertebrates contain
four DLG proteins from different genes, called DLG1-4.
DLG4 and DLG2 are found predominantly at postsynaptic
sites and they mediate surface ion channel and receptor
clustering. DLG3 is found axons and some presynaptic
terminals. DLG1 interacts with AMPA-type glutamate
receptors and is critical in their maturation and
delivery to synapses. The SH3 domain of DLG4 binds and
clusters the kainate subgroup of glutamate receptors via
two proline-rich sequences in their C-terminal tail. It
also binds AKAP79/150 (A-kinase anchoring protein). SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in 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 = 27.7 bits (62), Expect = 1.1
Identities = 15/57 (26%), Positives = 23/57 (40%), Gaps = 11/57 (19%)
Query: 60 RVLFSYTPANAD-----ELELHVNDVIDVLSEVEEGWWRGRL------RDRTGVFPS 105
R LF Y P+ L D++ V + ++ WW+ R + GV PS
Sbjct: 3 RALFDYDPSRDSGLPSQGLSFKFGDILHVTNASDDEWWQARRVTPNGEEEEVGVIPS 59
Score = 27.7 bits (62), Expect = 1.1
Identities = 15/57 (26%), Positives = 23/57 (40%), Gaps = 11/57 (19%)
Query: 148 RVLFSYTPANAD-----ELELHVNDVIDVLSEVEEGWWRGRL------RDRTGVFPS 193
R LF Y P+ L D++ V + ++ WW+ R + GV PS
Sbjct: 3 RALFDYDPSRDSGLPSQGLSFKFGDILHVTNASDDEWWQARRVTPNGEEEEVGVIPS 59
>gnl|CDD|212890 cd11957, SH3_RUSC2, Src homology 3 domain of RUN and SH3
domain-containing protein 2. RUSC2, also called Iporin
or Interacting protein of Rab1, is expressed
ubiquitously with highest amounts in the brain and
testis. It interacts with the small GTPase Rab1 and the
Golgi matrix protein GM130, and may function in linking
GTPases to certain intracellular signaling pathways.
RUSC proteins are adaptor proteins consisting of RUN,
leucine zipper, and SH3 domains. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 52
Score = 27.2 bits (60), Expect = 1.3
Identities = 11/37 (29%), Positives = 19/37 (51%)
Query: 72 ELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFV 108
+L + D++ VLS + W R L +G+ P +V
Sbjct: 15 QLSFNKGDILQVLSRADGDWLRCSLGPDSGLVPIAYV 51
Score = 27.2 bits (60), Expect = 1.3
Identities = 11/37 (29%), Positives = 19/37 (51%)
Query: 160 ELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFV 196
+L + D++ VLS + W R L +G+ P +V
Sbjct: 15 QLSFNKGDILQVLSRADGDWLRCSLGPDSGLVPIAYV 51
>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 = 27.3 bits (61), Expect = 1.3
Identities = 16/40 (40%), Positives = 20/40 (50%), Gaps = 5/40 (12%)
Query: 4 VIEASVEFDYTAQEADELTLRKGDL--ITGIRVQSGGWWE 41
VI A +DY AQ EL+ KGD + G G W+E
Sbjct: 1 VIRAL--YDYRAQTPGELSFSKGDFFHVIG-EEDQGEWYE 37
Score = 26.5 bits (59), Expect = 2.0
Identities = 10/33 (30%), Positives = 14/33 (42%)
Query: 60 RVLFSYTPANADELELHVNDVIDVLSEVEEGWW 92
R L+ Y EL D V+ E ++G W
Sbjct: 3 RALYDYRAQTPGELSFSKGDFFHVIGEEDQGEW 35
Score = 26.5 bits (59), Expect = 2.0
Identities = 10/33 (30%), Positives = 14/33 (42%)
Query: 148 RVLFSYTPANADELELHVNDVIDVLSEVEEGWW 180
R L+ Y EL D V+ E ++G W
Sbjct: 3 RALYDYRAQTPGELSFSKGDFFHVIGEEDQGEW 35
>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 = 26.9 bits (59), Expect = 1.9
Identities = 15/58 (25%), Positives = 26/58 (44%), Gaps = 13/58 (22%)
Query: 60 RVLFSYTPANADE--------LELHVNDVIDVLSEVEEGWWRGRLRD----RTGVFPS 105
+ LF Y P N D+ L D++ ++S+ + WW+ + R G+ PS
Sbjct: 3 KALFDYNP-NEDKAIPCKEAGLSFKKGDILQIMSQDDATWWQAKHEGDANPRAGLIPS 59
Score = 26.9 bits (59), Expect = 1.9
Identities = 15/58 (25%), Positives = 26/58 (44%), Gaps = 13/58 (22%)
Query: 148 RVLFSYTPANADE--------LELHVNDVIDVLSEVEEGWWRGRLRD----RTGVFPS 193
+ LF Y P N D+ L D++ ++S+ + WW+ + R G+ PS
Sbjct: 3 KALFDYNP-NEDKAIPCKEAGLSFKKGDILQIMSQDDATWWQAKHEGDANPRAGLIPS 59
>gnl|CDD|213011 cd12078, SH3_Tks4_3, Third Src homology 3 domain of Tyrosine kinase
substrate with four SH3 domains. Tks4, also called SH3
and PX domain-containing protein 2B (SH3PXD2B) or HOFI,
is a Src substrate and scaffolding protein that plays an
important role in the formation of podosomes and
invadopodia, the dynamic actin-rich structures that are
related to cell migration and cancer cell invasion. It
is required in the formation of functional podosomes,
EGF-induced membrane ruffling, and lamellipodia
generation. It plays an important role in cellular
attachment and cell spreading. Tks4 is essential for the
localization of MT1-MMP (membrane-type 1 matrix
metalloproteinase) to invadopodia. It contains an
N-terminal Phox homology (PX) domain and four SH3
domains. This model characterizes the third SH3 domain
of Tks4. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate affinity
and selectivity, preferentially to PxxP motifs. They
play versatile and diverse roles in the cell including
the regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 53
Score = 26.6 bits (58), Expect = 2.4
Identities = 8/30 (26%), Positives = 19/30 (63%)
Query: 81 IDVLSEVEEGWWRGRLRDRTGVFPSNFVEE 110
++V+ + GWW ++ D+ G P+ F+++
Sbjct: 24 VEVIEKNLSGWWYIQIEDKEGWAPATFIDK 53
Score = 26.6 bits (58), Expect = 2.4
Identities = 8/30 (26%), Positives = 19/30 (63%)
Query: 169 IDVLSEVEEGWWRGRLRDRTGVFPSNFVEE 198
++V+ + GWW ++ D+ G P+ F+++
Sbjct: 24 VEVIEKNLSGWWYIQIEDKEGWAPATFIDK 53
>gnl|CDD|213000 cd12067, SH3_MYO15A, Src Homology 3 domain of Myosin XVa. Myosin
XVa is an unconventional myosin that is critical for the
normal growth of mechanosensory stereocilia of inner ear
hair cells. Mutations in the myosin XVa gene are
associated with nonsyndromic hearing loss. Myosin XVa
contains a unique N-terminal extension followed by a
motor domain, light chain-binding IQ motifs, and a tail
consisting of a pair of MyTH4-FERM tandems separated by
a SH3 domain, and a PDZ domain. SH3 domains bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs; they play a
role in the regulation of enzymes by intramolecular
interactions, changing the subcellular localization of
signal pathway components and mediate multiprotein
complex assemblies.
Length = 80
Score = 27.1 bits (60), Expect = 2.6
Identities = 9/20 (45%), Positives = 13/20 (65%)
Query: 90 GWWRGRLRDRTGVFPSNFVE 109
GW G + R+GVFP+ V+
Sbjct: 60 GWKFGAIHGRSGVFPAELVQ 79
Score = 27.1 bits (60), Expect = 2.6
Identities = 9/20 (45%), Positives = 13/20 (65%)
Query: 178 GWWRGRLRDRTGVFPSNFVE 197
GW G + R+GVFP+ V+
Sbjct: 60 GWKFGAIHGRSGVFPAELVQ 79
>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 = 26.7 bits (59), Expect = 2.7
Identities = 18/68 (26%), Positives = 26/68 (38%), Gaps = 19/68 (27%)
Query: 60 RVLFSYTPANADELELHVNDVIDV---------------LSEVEEGWWRGRLRDRT---G 101
R L+ Y +++ L DV+ V EGW G+ +RT G
Sbjct: 4 RALYDYEKERDEDIILKTGDVLVVENPELLALGVPDGKETVPKPEGWLEGK-NERTGERG 62
Query: 102 VFPSNFVE 109
FP +VE
Sbjct: 63 DFPGTYVE 70
Score = 26.7 bits (59), Expect = 2.7
Identities = 18/68 (26%), Positives = 26/68 (38%), Gaps = 19/68 (27%)
Query: 148 RVLFSYTPANADELELHVNDVIDV---------------LSEVEEGWWRGRLRDRT---G 189
R L+ Y +++ L DV+ V EGW G+ +RT G
Sbjct: 4 RALYDYEKERDEDIILKTGDVLVVENPELLALGVPDGKETVPKPEGWLEGK-NERTGERG 62
Query: 190 VFPSNFVE 197
FP +VE
Sbjct: 63 DFPGTYVE 70
>gnl|CDD|212821 cd11888, SH3_ARHGAP9_like, Src Homology 3 domain of Rho
GTPase-activating protein 9 and similar proteins. This
subfamily is composed of Rho GTPase-activating proteins
including mammalian ARHGAP9, and vertebrate ARHGAPs 12
and 27. RhoGAPs (or ARHGAPs) bind to Rho proteins and
enhance the hydrolysis rates of bound GTP. ARHGAP9
functions as a GAP for Rac and Cdc42, but not for RhoA.
It negatively regulates cell migration and adhesion. It
also acts as a docking protein for the MAP kinases Erk2
and p38alpha, and may facilitate cross-talk between the
Rho GTPase and MAPK pathways to control actin
remodeling. ARHGAP27, also called CAMGAP1, shows GAP
activity towards Rac1 and Cdc42. It binds the adaptor
protein CIN85 and may play a role in clathrin-mediated
endocytosis. ARHGAP12 has been shown to display GAP
activity towards Rac1. It plays a role in regulating
HFG-driven cell growth and invasiveness. ARHGAPs in
this subfamily contain SH3, WW, Pleckstin homology
(PH), and RhoGAP domains. SH3 domains bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs; they play a
role in the regulation of enzymes by intramolecular
interactions, changing the subcellular localization of
signal pathway components and mediate multiprotein
complex assemblies.
Length = 54
Score = 26.2 bits (58), Expect = 2.9
Identities = 6/37 (16%), Positives = 20/37 (54%)
Query: 4 VIEASVEFDYTAQEADELTLRKGDLITGIRVQSGGWW 40
+ F+YT ++ ++++++G+ ++ + WW
Sbjct: 1 YVVVLYPFEYTGKDGRKVSIKEGERFLLLKKSNDDWW 37
>gnl|CDD|185709 cd07898, Adenylation_DNA_ligase, Adenylation domain of
ATP-dependent DNA Ligases. ATP-dependent polynucleotide
ligases catalyze phosphodiester bond formation using
nicked nucleic acid substrates with the high energy
nucleotide of ATP as a cofactor in a three step reaction
mechanism. DNA ligases play a vital role in the diverse
processes of DNA replication, recombination and repair.
ATP-dependent ligases are present in many organisms such
as viruses, bacteriophages, eukarya, archaea and
bacteria. Some organisms express a variety of different
ligases which appear to be targeted to specific
functions. ATP-dependent DNA ligases have a highly
modular architecture consisting of a unique arrangement
of two or more discrete domains including a DNA-binding
domain, an adenylation (nucleotidyltransferase (NTase))
domain, and an oligonucleotide/oligosaccharide binding
(OB)-fold domain. The adenylation domain binds ATP and
contains many of the active-site residues. The
adenylation and C-terminal OB-fold domains comprise a
catalytic core unit that is common to most members of
the ATP-dependent DNA ligase family. The catalytic core
unit contains six conserved sequence motifs (I, III,
IIIa, IV, V and VI) that define this family of related
nucleotidyltransferases.
Length = 201
Score = 28.1 bits (63), Expect = 3.1
Identities = 15/45 (33%), Positives = 18/45 (40%), Gaps = 6/45 (13%)
Query: 104 PSNFVEEIPAETMTAESRHRKESNNNEADPAKALAATIEPGRRCR 148
P EE+ E A +R R NE K + EPGRR
Sbjct: 155 PVESAEEL--EAAFARARARG----NEGLMLKDPDSPYEPGRRGL 193
>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 = 26.3 bits (58), Expect = 3.1
Identities = 16/51 (31%), Positives = 25/51 (49%), Gaps = 14/51 (27%)
Query: 12 DYTAQEADELTLRKGDLITGIR-VQSGGWW---------EGLL----VRER 48
D+T + EL KGD++T + + GW+ EGL+ +RER
Sbjct: 9 DHTKPKPGELAFHKGDIVTIVETCERKGWYRARHNTSGEEGLVAAGALRER 59
>gnl|CDD|226477 COG3968, COG3968, Uncharacterized protein related to glutamine
synthetase [General function prediction only].
Length = 724
Score = 28.7 bits (64), Expect = 3.3
Identities = 21/84 (25%), Positives = 32/84 (38%), Gaps = 21/84 (25%)
Query: 148 RVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVEEIPAETMTAE 207
R LF P EL+ H + G + +R F + +E+ A + A+
Sbjct: 243 RTLFGAPPPKGQELDDH---------------YFGAIPERVSAFMKDVEKELYALGIPAK 287
Query: 208 SRHRKESNNNEADPAKALTATIGE 231
+RH NE P + A I E
Sbjct: 288 TRH------NEVAPGQFEIAPIFE 305
Score = 28.0 bits (62), Expect = 5.4
Identities = 20/82 (24%), Positives = 31/82 (37%), Gaps = 21/82 (25%)
Query: 60 RVLFSYTPANADELELHVNDVIDVLSEVEEGWWRGRLRDRTGVFPSNFVEEIPAETMTAE 119
R LF P EL+ H + G + +R F + +E+ A + A+
Sbjct: 243 RTLFGAPPPKGQELDDH---------------YFGAIPERVSAFMKDVEKELYALGIPAK 287
Query: 120 SRHRKESNNNEADPAKALAATI 141
+RH NE P + A I
Sbjct: 288 TRH------NEVAPGQFEIAPI 303
>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 = 25.9 bits (57), Expect = 3.5
Identities = 8/23 (34%), Positives = 15/23 (65%)
Query: 11 FDYTAQEADELTLRKGDLITGIR 33
+D+TA+ EL++ +GD + I
Sbjct: 6 YDFTARSTHELSVEQGDKLCVIE 28
>gnl|CDD|233582 TIGR01812, sdhA_frdA_Gneg, succinate dehydrogenase or fumarate
reductase, flavoprotein
subunitGram-negative/mitochondrial subgroup. This model
represents the succinate dehydrogenase flavoprotein
subunit as found in Gram-negative bacteria,
mitochondria, and some Archaea. Mitochondrial forms
interact with ubiquinone and are designated EC 1.3.5.1,
but can be degraded to 1.3.99.1. Some isozymes in E.
coli and other species run primarily in the opposite
direction and are designated fumarate reductase [Energy
metabolism, Aerobic, Energy metabolism, Anaerobic,
Energy metabolism, TCA cycle].
Length = 541
Score = 28.5 bits (64), Expect = 3.5
Identities = 16/53 (30%), Positives = 30/53 (56%), Gaps = 7/53 (13%)
Query: 81 IDVLSEVEEGWWRGRLRDRTGVFPSNFVE--EIP-----AETMTAESRHRKES 126
+D + E+ E + R+ D++ VF ++ +E E+ AE + A + +RKES
Sbjct: 439 VDEIEELRERYKNVRINDKSKVFNTDLLEALELGNMLDLAEVVAAGALNRKES 491
Score = 28.5 bits (64), Expect = 3.5
Identities = 16/53 (30%), Positives = 30/53 (56%), Gaps = 7/53 (13%)
Query: 169 IDVLSEVEEGWWRGRLRDRTGVFPSNFVE--EIP-----AETMTAESRHRKES 214
+D + E+ E + R+ D++ VF ++ +E E+ AE + A + +RKES
Sbjct: 439 VDEIEELRERYKNVRINDKSKVFNTDLLEALELGNMLDLAEVVAAGALNRKES 491
>gnl|CDD|212950 cd12017, SH3_Tks_3, Third Src homology 3 domain of Tyrosine kinase
substrate (Tks) proteins. Tks proteins are Src
substrates and scaffolding proteins that play important
roles in the formation of podosomes and invadopodia, the
dynamic actin-rich structures that are related to cell
migration and cancer cell invasion. Vertebrates contain
two Tks proteins, Tks4 (Tyr kinase substrate with four
SH3 domains) and Tks5 (Tyr kinase substrate with five
SH3 domains), which display partially overlapping but
non-redundant functions. Both associate with the ADAMs
family of transmembrane metalloproteases, which function
as sheddases and mediators of cell and matrix
interactions. Tks5 interacts with N-WASP and Nck, while
Tks4 is essential for the localization of MT1-MMP
(membrane-type 1 matrix metalloproteinase) to
invadopodia. Tks proteins contain an N-terminal Phox
homology (PX) domain and four or five SH3 domains. This
model characterizes the third SH3 domain of Tks
proteins. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate affinity
and selectivity, preferentially to PxxP motifs. They
play versatile and diverse roles in the cell including
the regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 53
Score = 25.9 bits (57), Expect = 3.6
Identities = 8/30 (26%), Positives = 19/30 (63%)
Query: 81 IDVLSEVEEGWWRGRLRDRTGVFPSNFVEE 110
++V+ + GWW ++ + G PS+++E+
Sbjct: 24 VEVIDKNPSGWWYVKIDGKEGWAPSSYIEK 53
Score = 25.9 bits (57), Expect = 3.6
Identities = 8/30 (26%), Positives = 19/30 (63%)
Query: 169 IDVLSEVEEGWWRGRLRDRTGVFPSNFVEE 198
++V+ + GWW ++ + G PS+++E+
Sbjct: 24 VEVIDKNPSGWWYVKIDGKEGWAPSSYIEK 53
>gnl|CDD|212831 cd11898, SH3_SNX9, Src Homology 3 domain of Sorting nexin 9.
Sorting nexin 9 (SNX9), also known as SH3PX1, is a
cytosolic protein that interacts with proteins
associated with clathrin-coated pits such as
Cdc-42-associated tyrosine kinase 2 (ACK2). It binds
class I polyproline sequences found in dynamin 1/2 and
the WASP/N-WASP actin regulators. SNX9 is localized to
plasma membrane endocytic sites and acts primarily in
clathrin-mediated endocytosis. Its array of interacting
partners suggests that SNX9 functions at the interface
between endocytosis and actin cytoskeletal
organization. SNXs are Phox homology (PX) domain
containing proteins that are involved in regulating
membrane traffic and protein sorting in the endosomal
system. SNX9 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 = 57
Score = 26.0 bits (57), Expect = 3.8
Identities = 13/36 (36%), Positives = 23/36 (63%), Gaps = 1/36 (2%)
Query: 6 EASVEFDYTAQEAD-ELTLRKGDLITGIRVQSGGWW 40
+A V +D+ A+ + ELT+++G++IT GG W
Sbjct: 1 KARVLYDFAAEPGNNELTVKEGEIITVTNPNVGGGW 36
>gnl|CDD|236421 PRK09231, PRK09231, fumarate reductase flavoprotein subunit;
Validated.
Length = 582
Score = 28.1 bits (63), Expect = 4.7
Identities = 18/53 (33%), Positives = 28/53 (52%), Gaps = 7/53 (13%)
Query: 81 IDVLSEVEEGWWRGRLRDRTGVFPSNFVEEIP-------AETMTAESRHRKES 126
ID L+E++E + R R+ D + VF ++ + I AE M + RKES
Sbjct: 476 IDKLAELKERFKRVRITDTSSVFNTDLLYTIELGYGLDVAECMAHSALARKES 528
Score = 28.1 bits (63), Expect = 4.7
Identities = 18/53 (33%), Positives = 28/53 (52%), Gaps = 7/53 (13%)
Query: 169 IDVLSEVEEGWWRGRLRDRTGVFPSNFVEEIP-------AETMTAESRHRKES 214
ID L+E++E + R R+ D + VF ++ + I AE M + RKES
Sbjct: 476 IDKLAELKERFKRVRITDTSSVFNTDLLYTIELGYGLDVAECMAHSALARKES 528
>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 = 25.7 bits (56), Expect = 5.2
Identities = 14/40 (35%), Positives = 23/40 (57%), Gaps = 3/40 (7%)
Query: 73 LELHVNDVIDVL-SEVEEGWWRGR--LRDRTGVFPSNFVE 109
L L+ D++++ +E E+ WW GR + G FP N V+
Sbjct: 22 LRLNPGDIVELTKAEAEQNWWEGRNTSTNEIGWFPCNRVK 61
Score = 25.7 bits (56), Expect = 5.2
Identities = 14/40 (35%), Positives = 23/40 (57%), Gaps = 3/40 (7%)
Query: 161 LELHVNDVIDVL-SEVEEGWWRGR--LRDRTGVFPSNFVE 197
L L+ D++++ +E E+ WW GR + G FP N V+
Sbjct: 22 LRLNPGDIVELTKAEAEQNWWEGRNTSTNEIGWFPCNRVK 61
>gnl|CDD|151784 pfam11343, DUF3145, Protein of unknown function (DUF3145). This
family of proteins with unknown function appear to be
restricted to Actinobacteria.
Length = 158
Score = 26.9 bits (60), Expect = 5.9
Identities = 25/73 (34%), Positives = 31/73 (42%), Gaps = 11/73 (15%)
Query: 2 SSVIEASVEFDYTAQEADELTLR-----KGDLITGIRVQSG-GWWEGLLVRERQAVTEQP 55
SV+ V D+T Q A TLR G + TG R+ S W L R VTE P
Sbjct: 20 GSVLGVRVNLDWTPQPAAPGTLRAEFSWVGPVGTGARLASALRGWPHL----RFEVTEDP 75
Query: 56 GRRCR-VLFSYTP 67
+S+TP
Sbjct: 76 SPGADGGRWSHTP 88
>gnl|CDD|212962 cd12029, SH3_DLG3, Src Homology 3 domain of Disks Large homolog 3.
DLG3, also called synapse-associated protein 102
(SAP102), is a scaffolding protein that clusters at
synapses and plays an important role in synaptic
development and plasticity. Mutations in DLG3 cause
midgestational embryonic lethality in mice and may be
associated with nonsyndromic X-linked mental retardation
in humans. It interacts with the NEDD4 (neural precursor
cell-expressed developmentally downregulated 4) family
of ubiquitin ligases and promotes apical tight junction
formation. DLG3 is a member of the MAGUK
(membrane-associated guanylate kinase) protein family,
which is characterized by the presence of a core of
three domains: PDZ, SH3, and guanylate kinase (GuK). The
GuK domain in MAGUK proteins is enzymatically inactive;
instead, the domain mediates protein-protein
interactions and associates intramolecularly with the
SH3 domain. DLG3 contains three PDZ 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 = 67
Score = 25.0 bits (54), Expect = 9.9
Identities = 15/57 (26%), Positives = 25/57 (43%), Gaps = 11/57 (19%)
Query: 60 RVLFSYTPAN-----ADELELHVNDVIDVLSEVEEGWWRGRL------RDRTGVFPS 105
R LF Y + L D++ V++ ++ WW+ RL ++ GV PS
Sbjct: 6 RALFDYDRTRDSCLPSQGLSFSYGDILHVINASDDEWWQARLVTPHGESEQIGVIPS 62
Score = 25.0 bits (54), Expect = 9.9
Identities = 15/57 (26%), Positives = 25/57 (43%), Gaps = 11/57 (19%)
Query: 148 RVLFSYTPAN-----ADELELHVNDVIDVLSEVEEGWWRGRL------RDRTGVFPS 193
R LF Y + L D++ V++ ++ WW+ RL ++ GV PS
Sbjct: 6 RALFDYDRTRDSCLPSQGLSFSYGDILHVINASDDEWWQARLVTPHGESEQIGVIPS 62
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
0.314 0.131 0.389
Gapped
Lambda K H
0.267 0.0813 0.140
Matrix: BLOSUM62
Gap Penalties: Existence: 11, Extension: 1
Number of Sequences: 44354
Number of Hits to DB: 12,131,234
Number of extensions: 1165322
Number of successful extensions: 1685
Number of sequences better than 10.0: 1
Number of HSP's gapped: 1546
Number of HSP's successfully gapped: 740
Length of query: 235
Length of database: 10,937,602
Length adjustment: 94
Effective length of query: 141
Effective length of database: 6,768,326
Effective search space: 954333966
Effective search space used: 954333966
Neighboring words threshold: 11
Window for multiple hits: 40
X1: 16 ( 7.3 bits)
X2: 38 (14.6 bits)
X3: 64 (24.7 bits)
S1: 42 (22.0 bits)
S2: 57 (25.6 bits)