RPS-BLAST 2.2.26 [Sep-21-2011]
Database: CDD.v3.10
44,354 sequences; 10,937,602 total letters
Searching..................................................done
Query= psy9673
(162 letters)
>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 = 69.3 bits (170), Expect = 1e-16
Identities = 24/39 (61%), Positives = 32/39 (82%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGEVNGTTGAFPMSYVQI 130
DL+FKK DI++LR++ID NW++GE NG G FP SYVQ+
Sbjct: 15 DLSFKKGDIILLRKRIDENWYHGECNGKQGFFPASYVQV 53
>gnl|CDD|212861 cd11928, SH3_SH3RF3_1, First Src Homology 3 domain of SH3 domain
containing ring finger 3, an E3 ubiquitin-protein
ligase. SH3RF3 is also called POSH2 (Plenty of SH3s 2)
or SH3MD4 (SH3 multiple domains protein 4). It is a
scaffold protein with E3 ubiquitin-protein ligase
activity. It was identified in the screen for
interacting partners of p21-activated kinase 2 (PAK2).
It may play a role in regulating JNK mediated apoptosis
in certain conditions. It also interacts with GTP-loaded
Rac1. SH3RF3 is highly homologous to SH3RF1; it also
contains an N-terminal RING finger domain and four SH3
domains. This model represents the first SH3 domain,
located at the N-terminal half, of SH3RF3. SH3 domains
are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 54
Score = 63.8 bits (155), Expect = 1e-14
Identities = 23/38 (60%), Positives = 29/38 (76%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGEVNGTTGAFPMSYVQ 129
DL F K DI+ILRRK+D NW++GE+NG G P SY+Q
Sbjct: 16 DLKFNKGDIIILRRKVDENWYHGELNGCHGFLPASYIQ 53
>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 = 59.2 bits (143), Expect = 1e-12
Identities = 24/39 (61%), Positives = 31/39 (79%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGEVNGTTGAFPMSYVQI 130
DL F K DI+ILRR++D NW++GEVNG G FP ++VQI
Sbjct: 16 DLKFSKGDIIILRRQVDENWYHGEVNGIHGFFPTNFVQI 54
>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 = 57.7 bits (140), Expect = 3e-12
Identities = 22/39 (56%), Positives = 29/39 (74%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGEVNGTTGAFPMSYVQI 130
+L+ KK DI+ +RR+ID NW+ GE NG G FP SYV+I
Sbjct: 15 ELSLKKGDIIYIRRQIDKNWYEGEHNGRVGIFPASYVEI 53
>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 = 57.3 bits (138), Expect = 5e-12
Identities = 20/39 (51%), Positives = 30/39 (76%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGEVNGTTGAFPMSYVQI 130
DL F K D+++LRR++D NW+ GE+NG +G FP S V++
Sbjct: 16 DLKFNKGDVILLRRQLDENWYLGEINGVSGIFPASSVEV 54
>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 = 55.4 bits (134), Expect = 2e-11
Identities = 18/40 (45%), Positives = 30/40 (75%)
Query: 91 LDLNFKKDDIVILRRKIDNNWFYGEVNGTTGAFPMSYVQI 130
++L+F+K D++ L R++D NW+ G + G G FP+SYVQ+
Sbjct: 14 VELSFRKGDVITLTRRVDENWYEGRIGGRQGIFPVSYVQV 53
>gnl|CDD|212853 cd11920, SH3_Sorbs2_1, First Src Homology 3 domain of Sorbin and
SH3 domain containing 2 (Sorbs2), also called
Arg-binding protein 2 (ArgBP2). Sorbs2 or ArgBP2 is an
adaptor protein containing one sorbin homology (SoHo)
and three SH3 domains. It regulates actin-dependent
processes including cell adhesion, morphology, and
migration. It is expressed in many tissues and is
abundant in the heart. Like vinexin, it is found in
focal adhesion where it interacts with vinculin and
afadin. It also localizes in epithelial cell stress
fibers and in cardiac muscle cell Z-discs. Sorbs2 has
been implicated to play roles in the signaling of c-Arg,
Akt, and Pyk2. Other interaction partners of Sorbs2
include c-Abl, flotillin, spectrin, dynamin 1/2,
synaptojanin, PTP-PEST, among others. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 55
Score = 54.2 bits (130), Expect = 7e-11
Identities = 21/38 (55%), Positives = 28/38 (73%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGEVNGTTGAFPMSYVQ 129
+L+FKK D V + RKID NW+ GE +G G FP+SYV+
Sbjct: 16 ELSFKKGDTVYILRKIDQNWYEGEHHGRVGIFPISYVE 53
>gnl|CDD|212737 cd11803, SH3_Endophilin_A, Src homology 3 domain of Endophilin-A.
Endophilins play roles in synaptic vesicle formation,
virus budding, mitochondrial morphology maintenance,
receptor-mediated endocytosis inhibition, and endosomal
sorting. They are classified into two types, A and B.
Vertebrates contain three endophilin-A isoforms (A1, A2,
and A3). Endophilin-A proteins are enriched in the brain
and play multiple roles in receptor-mediated
endocytosis. They tubulate membranes and regulate
calcium influx into neurons to trigger the activation of
the endocytic machinery. They are also involved in the
sorting of plasma membrane proteins, actin filament
assembly, and the uncoating of clathrin-coated vesicles
for fusion with endosomes. Endophilins contain an
N-terminal N-BAR domain (BAR domain with an additional
N-terminal amphipathic helix), followed by a variable
region containing proline clusters, and a C-terminal SH3
domain. SH3 domains are protein interaction domains that
bind to proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 55
Score = 53.4 bits (129), Expect = 2e-10
Identities = 19/39 (48%), Positives = 29/39 (74%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGEVNGTTGAFPMSYVQI 130
+L FK+ DI+ L +ID NW+ G VNG +G FP++YV++
Sbjct: 16 ELGFKEGDIITLTNQIDENWYEGMVNGQSGFFPVNYVEV 54
Score = 43.4 bits (103), Expect = 8e-07
Identities = 14/26 (53%), Positives = 20/26 (76%)
Query: 129 QIDNNWFYGEVNGTTGAFPMSYVQFV 154
QID NW+ G VNG +G FP++YV+ +
Sbjct: 30 QIDENWYEGMVNGQSGFFPVNYVEVL 55
>gnl|CDD|238093 cd00162, RING, RING-finger (Really Interesting New Gene) domain,
a specialized type of Zn-finger of 40 to 60 residues
that binds two atoms of zinc; defined by the
'cross-brace' motif C-X2-C-X(9-39)-C-X(1-3)-
H-X(2-3)-(N/C/H)-X2-C-X(4-48)C-X2-C; probably involved
in mediating protein-protein interactions; identified
in a proteins with a wide range of functions such as
viral replication, signal transduction, and
development; has two variants, the C3HC4-type and a
C3H2C3-type (RING-H2 finger), which have different
cysteine/histidine pattern; a subset of RINGs are
associated with B-Boxes (C-X2-H-X7-C-X7-C-X2-C-H-X2-H).
Length = 45
Score = 50.5 bits (121), Expect = 1e-09
Identities = 17/43 (39%), Positives = 25/43 (58%), Gaps = 1/43 (2%)
Query: 11 ECSVCLDRLDTSSKVLPCQHTFCKKCLEEIVSSHKELRCPECR 53
EC +CL+ +LPC H FC+ C+++ + S K CP CR
Sbjct: 1 ECPICLEEFREPVVLLPCGHVFCRSCIDKWLKSGK-NTCPLCR 42
>gnl|CDD|222279 pfam13639, zf-RING_2, Ring finger domain.
Length = 46
Score = 48.5 bits (116), Expect = 9e-09
Identities = 19/45 (42%), Positives = 26/45 (57%), Gaps = 4/45 (8%)
Query: 11 ECSVCLDRLDTSSKV--LPCQHTFCKKCLEEIVSSHKELRCPECR 53
EC +CLD + +V LPC H F K+CL++ + S CP CR
Sbjct: 2 ECPICLDEFEPGEEVVVLPCGHVFHKECLDKWLRSSN--TCPLCR 44
>gnl|CDD|206094 pfam13923, zf-C3HC4_2, Zinc finger, C3HC4 type (RING finger).
Length = 45
Score = 48.6 bits (116), Expect = 9e-09
Identities = 17/46 (36%), Positives = 25/46 (54%), Gaps = 2/46 (4%)
Query: 8 DLLECSVCLDRLDTSSKVLPCQHTFCKKCLEEIVSSHKELRCPECR 53
+ LEC +CLD L + PC H FC++C+ + +CP CR
Sbjct: 1 EELECPICLDLLRDPVVLTPCGHVFCRECILRYLKKKS--KCPICR 44
>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 = 48.5 bits (116), Expect = 1e-08
Identities = 15/38 (39%), Positives = 25/38 (65%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGEVNGTTGAFPMSYVQ 129
+L+ + DI+ + K D+ W+ GE+NG G FP +YV+
Sbjct: 15 ELSLQPGDIIEVHEKQDDGWWLGELNGKKGIFPATYVE 52
Score = 38.5 bits (90), Expect = 7e-05
Identities = 11/24 (45%), Positives = 17/24 (70%)
Query: 129 QIDNNWFYGEVNGTTGAFPMSYVQ 152
+ D+ W+ GE+NG G FP +YV+
Sbjct: 29 KQDDGWWLGELNGKKGIFPATYVE 52
>gnl|CDD|212852 cd11919, SH3_Sorbs1_1, First Src Homology 3 domain of Sorbin and
SH3 domain containing 1 (Sorbs1), also called ponsin.
Sorbs1 is also called ponsin, SH3P12, or CAP (c-Cbl
associated protein). It is an adaptor protein containing
one sorbin homology (SoHo) and three SH3 domains. It
binds Cbl and plays a major role in regulating the
insulin signaling pathway by enhancing insulin-induced
phosphorylation of Cbl. Sorbs1, like vinexin, localizes
at cell-ECM and cell-cell adhesion sites where it binds
vinculin, paxillin, and afadin. It may function in the
control of cell motility. Other interaction partners of
Sorbs1 include c-Abl, Sos, flotillin, Grb4, ataxin-7,
filamin C, among others. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 55
Score = 47.3 bits (112), Expect = 3e-08
Identities = 17/39 (43%), Positives = 27/39 (69%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGEVNGTTGAFPMSYVQI 130
+L +K DIV + ++ID NW+ GE +G G FP SY+++
Sbjct: 16 ELPLQKGDIVYIYKQIDQNWYEGEHHGRVGIFPRSYIEL 54
Score = 40.3 bits (94), Expect = 1e-05
Identities = 14/28 (50%), Positives = 19/28 (67%)
Query: 127 YVQIDNNWFYGEVNGTTGAFPMSYVQFV 154
Y QID NW+ GE +G G FP SY++ +
Sbjct: 28 YKQIDQNWYEGEHHGRVGIFPRSYIELL 55
>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 = 47.1 bits (112), Expect = 3e-08
Identities = 18/40 (45%), Positives = 28/40 (70%)
Query: 91 LDLNFKKDDIVILRRKIDNNWFYGEVNGTTGAFPMSYVQI 130
L+LNFK D++ L +++ +W G V G TG FP+S+V+I
Sbjct: 14 LELNFKAGDVIFLLSRVNKDWLEGTVRGATGIFPLSFVKI 53
>gnl|CDD|214546 smart00184, RING, Ring finger. E3 ubiquitin-protein ligase
activity is intrinsic to the RING domain of c-Cbl and
is likely to be a general function of this domain;
Various RING fingers exhibit binding activity towards
E2 ubiquitin-conjugating enzymes (Ubc' s).
Length = 40
Score = 46.7 bits (111), Expect = 4e-08
Identities = 15/41 (36%), Positives = 22/41 (53%), Gaps = 1/41 (2%)
Query: 12 CSVCLDRLDTSSKVLPCQHTFCKKCLEEIVSSHKELRCPEC 52
C +CL+ +LPC HTFC+ C+ + + S CP C
Sbjct: 1 CPICLEEYLKDPVILPCGHTFCRSCIRKWLESGN-NTCPIC 40
>gnl|CDD|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 = 47.1 bits (113), Expect = 4e-08
Identities = 17/37 (45%), Positives = 25/37 (67%), Gaps = 1/37 (2%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGEVN-GTTGAFPMSY 127
+L+FKK DI+ + K D+ W+ GE+N G G FP +Y
Sbjct: 15 ELSFKKGDIITVLEKDDDGWWEGELNGGREGLFPANY 51
>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 = 47.2 bits (112), Expect = 4e-08
Identities = 16/39 (41%), Positives = 26/39 (66%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGEVNGTTGAFPMSYVQI 130
+L +K DIV + +++D NW GE +G G FP +YV++
Sbjct: 16 ELTLQKGDIVYIHKEVDKNWLEGEHHGRVGIFPANYVEV 54
Score = 35.7 bits (82), Expect = 8e-04
Identities = 11/26 (42%), Positives = 17/26 (65%)
Query: 129 QIDNNWFYGEVNGTTGAFPMSYVQFV 154
++D NW GE +G G FP +YV+ +
Sbjct: 30 EVDKNWLEGEHHGRVGIFPANYVEVL 55
>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 = 45.7 bits (108), Expect = 1e-07
Identities = 18/42 (42%), Positives = 29/42 (69%), Gaps = 2/42 (4%)
Query: 91 LDLNFKKDDIVILRRKIDNNWFYGEVNGTT--GAFPMSYVQI 130
++L+F+K + + L RK++ NW+ G + GT G FP SYVQ+
Sbjct: 15 VELSFRKGEHICLIRKVNENWYEGRITGTGRQGIFPASYVQV 56
Score = 33.0 bits (75), Expect = 0.007
Identities = 12/26 (46%), Positives = 17/26 (65%), Gaps = 2/26 (7%)
Query: 129 QIDNNWFYGEVNGTT--GAFPMSYVQ 152
+++ NW+ G + GT G FP SYVQ
Sbjct: 30 KVNENWYEGRITGTGRQGIFPASYVQ 55
>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 = 45.7 bits (108), Expect = 2e-07
Identities = 17/42 (40%), Positives = 31/42 (73%), Gaps = 2/42 (4%)
Query: 91 LDLNFKKDDIVILRRKIDNNWFYGEVNGTT--GAFPMSYVQI 130
++L+ +K D V+L +++D NW+ G++ GT G FP+SYV++
Sbjct: 15 VELSLRKGDRVVLLKQVDQNWYEGKIPGTNRQGIFPVSYVEV 56
Score = 34.5 bits (79), Expect = 0.002
Identities = 13/28 (46%), Positives = 20/28 (71%), Gaps = 2/28 (7%)
Query: 129 QIDNNWFYGEVNGTT--GAFPMSYVQFV 154
Q+D NW+ G++ GT G FP+SYV+ +
Sbjct: 30 QVDQNWYEGKIPGTNRQGIFPVSYVEVI 57
>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 = 45.5 bits (108), Expect = 2e-07
Identities = 18/38 (47%), Positives = 28/38 (73%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGEVNGTTGAFPMSYVQ 129
+L+F+K DI+ + K D +W+ GE+NG TG FP +YV+
Sbjct: 15 ELSFQKGDIINVLSKDDPDWWRGELNGQTGLFPSNYVE 52
Score = 33.2 bits (76), Expect = 0.006
Identities = 12/22 (54%), Positives = 17/22 (77%)
Query: 131 DNNWFYGEVNGTTGAFPMSYVQ 152
D +W+ GE+NG TG FP +YV+
Sbjct: 31 DPDWWRGELNGQTGLFPSNYVE 52
>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 = 45.0 bits (107), Expect = 2e-07
Identities = 17/40 (42%), Positives = 25/40 (62%), Gaps = 3/40 (7%)
Query: 93 LNFKKDDIVILRRK---IDNNWFYGEVNGTTGAFPMSYVQ 129
L+F K D++ L K +D W +G ++G +GAFP YVQ
Sbjct: 16 LSFHKGDVIKLLPKEGPLDPGWLFGTLDGRSGAFPKEYVQ 55
>gnl|CDD|215715 pfam00097, zf-C3HC4, Zinc finger, C3HC4 type (RING finger). The
C3HC4 type zinc-finger (RING finger) is a cysteine-rich
domain of 40 to 60 residues that coordinates two zinc
ions, and has the consensus sequence:
C-X2-C-X(9-39)-C-X(1-3)-H-X(2-3)-C-X2-C-X(4-48)-C-X2-C
where X is any amino acid. Many proteins containing a
RING finger play a key role in the ubiquitination
pathway.
Length = 40
Score = 44.0 bits (104), Expect = 4e-07
Identities = 15/41 (36%), Positives = 21/41 (51%), Gaps = 1/41 (2%)
Query: 12 CSVCLDRLDTSSKVLPCQHTFCKKCLEEIVSSHKELRCPEC 52
C +CL+ +LPC H FC KC+ + S + CP C
Sbjct: 1 CPICLEEPKDPVTILPCGHLFCSKCILSWLES-GNVTCPLC 40
>gnl|CDD|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 = 44.2 bits (104), Expect = 5e-07
Identities = 15/42 (35%), Positives = 30/42 (71%), Gaps = 2/42 (4%)
Query: 91 LDLNFKKDDIVILRRKIDNNWFYGEVNGTT--GAFPMSYVQI 130
++++F+K + + L R++D NW+ G + GT+ G FP++YV +
Sbjct: 15 VEMSFRKGERITLLRQVDENWYEGRIPGTSRQGIFPITYVDV 56
Score = 34.2 bits (78), Expect = 0.003
Identities = 12/28 (42%), Positives = 19/28 (67%), Gaps = 2/28 (7%)
Query: 129 QIDNNWFYGEVNGTT--GAFPMSYVQFV 154
Q+D NW+ G + GT+ G FP++YV +
Sbjct: 30 QVDENWYEGRIPGTSRQGIFPITYVDVI 57
>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 = 44.1 bits (105), Expect = 6e-07
Identities = 16/39 (41%), Positives = 25/39 (64%), Gaps = 1/39 (2%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGEVN-GTTGAFPMSYVQ 129
+L+FKK DI+ + K D+ W+ G + G G FP +YV+
Sbjct: 18 ELSFKKGDIITVLEKSDDGWWKGRLGRGKEGLFPSNYVE 56
>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 = 43.4 bits (103), Expect = 1e-06
Identities = 15/37 (40%), Positives = 23/37 (62%)
Query: 93 LNFKKDDIVILRRKIDNNWFYGEVNGTTGAFPMSYVQ 129
L F++ DI+ + D +W+ GE+ G G FP +YVQ
Sbjct: 16 LEFRRGDIITVLDSSDPDWWKGELRGRVGIFPANYVQ 52
Score = 33.8 bits (78), Expect = 0.004
Identities = 11/22 (50%), Positives = 15/22 (68%)
Query: 131 DNNWFYGEVNGTTGAFPMSYVQ 152
D +W+ GE+ G G FP +YVQ
Sbjct: 31 DPDWWKGELRGRVGIFPANYVQ 52
>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 = 43.2 bits (103), Expect = 1e-06
Identities = 17/39 (43%), Positives = 23/39 (58%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGEVNGTTGAFPMSYVQI 130
+L+ KK D+V + K DN W+ GE G G P SYV+
Sbjct: 15 ELSLKKGDVVKVLDKDDNGWWEGERGGRRGLVPSSYVEE 53
>gnl|CDD|222135 pfam13445, zf-RING_LisH, RING-type zinc-finger, LisH dimerisation
motif. This zinc-finger is the dimerisation motif for
LisH proteins, and is also a typical RING-type of plant
ubiquitin ligases.
Length = 55
Score = 43.1 bits (102), Expect = 1e-06
Identities = 10/44 (22%), Positives = 21/44 (47%), Gaps = 3/44 (6%)
Query: 10 LECSVCLDRLDTSS---KVLPCQHTFCKKCLEEIVSSHKELRCP 50
C + + + +LPC H + +K LE++ + + +CP
Sbjct: 11 FVCPISKEVMTDEENPPVMLPCGHVYSRKALEKLAKNGGKFKCP 54
>gnl|CDD|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 = 43.2 bits (102), Expect = 1e-06
Identities = 17/41 (41%), Positives = 27/41 (65%), Gaps = 2/41 (4%)
Query: 92 DLNFKKDDIVILRRKID--NNWFYGEVNGTTGAFPMSYVQI 130
DL F+K DI+ + +K D N+W+ G + G G FP +YV++
Sbjct: 15 DLAFQKGDIITILKKSDSQNDWWTGRIGGREGIFPANYVEL 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 = 42.7 bits (100), Expect = 2e-06
Identities = 18/38 (47%), Positives = 27/38 (71%), Gaps = 1/38 (2%)
Query: 93 LNFKKDDIVILRRKIDNNWFYGEVNGTTGAFPMSYVQI 130
LNF K+DI+ + + NW++GEV+G G FP SYV++
Sbjct: 16 LNFSKNDIITVLEQ-QENWWFGEVHGGRGWFPKSYVKL 52
>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 = 42.8 bits (101), Expect = 2e-06
Identities = 13/37 (35%), Positives = 24/37 (64%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGEVNGTTGAFPMSYV 128
+L+F + D++ L+ + W GE+NG G FP+++V
Sbjct: 15 ELSFSEGDVITLKEYVGEEWAKGELNGKIGIFPLNFV 51
>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 = 42.3 bits (100), Expect = 2e-06
Identities = 15/39 (38%), Positives = 26/39 (66%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGEVNGTTGAFPMSYVQI 130
+L+F K DI+ + + ++ W+ G +NG TG FP +YV+
Sbjct: 15 ELSFDKGDIITVTQVVEGGWWEGTLNGKTGWFPSNYVKE 53
>gnl|CDD|212889 cd11956, SH3_srGAP4, Src homology 3 domain of Slit-Robo GTPase
Activating Protein 4. srGAP4, also called ARHGAP4, is
highly expressed in hematopoietic cells and may play a
role in lymphocyte differentiation. It is able to
stimulate the GTPase activity of Rac1, Cdc42, and RhoA.
In the nervous system, srGAP4 has been detected in
differentiating neurites and may be involved in axon and
dendritic growth. srGAPs are Rho GAPs that interact with
Robo1, the transmembrane receptor of Slit proteins. Slit
proteins are secreted proteins that control axon
guidance and the migration of neurons and leukocytes.
srGAPs contain an N-terminal F-BAR domain, a Rho GAP
domain, and a C-terminal SH3 domain. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 55
Score = 42.5 bits (100), Expect = 2e-06
Identities = 14/39 (35%), Positives = 25/39 (64%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGEVNGTTGAFPMSYVQI 130
+L+FK+ D+++L K ++W+ GE NG G P Y+ +
Sbjct: 17 ELSFKRGDVLLLHSKASSDWWRGEHNGMRGLIPHKYISV 55
>gnl|CDD|212749 cd11815, SH3_Eve1_2, Second Src homology 3 domain of ADAM-binding
protein Eve-1. Eve-1, also called SH3 domain-containing
protein 19 (SH3D19) or EEN-binding protein (EBP), exists
in multiple alternatively spliced isoforms. The longest
isoform contains five SH3 domain in the C-terminal
region and seven proline-rich motifs in the N-terminal
region. It is abundantly expressed in skeletal muscle
and heart, and may be involved in regulating the
activity of ADAMs (A disintegrin and metalloproteases).
Eve-1 interacts with EEN, an endophilin involved in
endocytosis and may be the target of the MLL-EEN fusion
protein that is implicated in leukemogenesis. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 52
Score = 42.2 bits (99), Expect = 2e-06
Identities = 16/38 (42%), Positives = 23/38 (60%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGEVNGTTGAFPMSYVQ 129
DL+ +IV L KID W+ G+ TTG FP ++V+
Sbjct: 15 DLSLNSGEIVYLLEKIDTEWYRGKCKNTTGIFPANHVK 52
Score = 30.6 bits (69), Expect = 0.043
Identities = 10/24 (41%), Positives = 16/24 (66%)
Query: 129 QIDNNWFYGEVNGTTGAFPMSYVQ 152
+ID W+ G+ TTG FP ++V+
Sbjct: 29 KIDTEWYRGKCKNTTGIFPANHVK 52
>gnl|CDD|212764 cd11830, SH3_VAV_2, C-terminal (or second) Src homology 3 domain of
VAV proteins. VAV proteins function both as cytoplasmic
guanine nucleotide exchange factors (GEFs) for Rho
GTPases and scaffold proteins and they play important
roles in cell signaling by coupling cell surface
receptors to various effector functions. They play key
roles in processes that require cytoskeletal
reorganization including immune synapse formation,
phagocytosis, cell spreading, and platelet aggregation,
among others. Vertebrates have three VAV proteins (VAV1,
VAV2, and VAV3). VAV proteins contain several domains
that enable their function: N-terminal calponin homology
(CH), acidic, RhoGEF (also called Dbl-homologous or DH),
Pleckstrin Homology (PH), C1 (zinc finger), SH2, and two
SH3 domains. The SH3 domain of VAV is involved in the
localization of proteins to specific sites within the
cell, by interacting with proline-rich sequences within
target proteins. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP motifs.
They play versatile and diverse roles in the cell
including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 54
Score = 41.5 bits (97), Expect = 6e-06
Identities = 16/39 (41%), Positives = 25/39 (64%), Gaps = 1/39 (2%)
Query: 92 DLNFKKDDIV-ILRRKIDNNWFYGEVNGTTGAFPMSYVQ 129
+L+ K+ D+V I +K W+ GE+NG G FP +YV+
Sbjct: 15 ELSLKEGDVVKIYNKKGQQGWWRGEINGRIGWFPSTYVE 53
Score = 32.2 bits (73), Expect = 0.012
Identities = 10/22 (45%), Positives = 14/22 (63%)
Query: 131 DNNWFYGEVNGTTGAFPMSYVQ 152
W+ GE+NG G FP +YV+
Sbjct: 32 QQGWWRGEINGRIGWFPSTYVE 53
>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 = 41.3 bits (97), Expect = 6e-06
Identities = 13/38 (34%), Positives = 25/38 (65%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGEVNGTTGAFPMSYVQ 129
DL F+K D++++ K++ +W G+ G G FP ++V+
Sbjct: 15 DLEFQKGDVILVLSKVNEDWLEGQCKGKIGIFPSAFVE 52
>gnl|CDD|212882 cd11949, SH3_GRB2_C, C-terminal Src homology 3 domain of Growth
factor receptor-bound protein 2. GRB2 is a critical
signaling molecule that regulates the Ras pathway by
linking tyrosine kinases to the Ras guanine nucleotide
releasing protein Sos (son of sevenless), which converts
Ras to the active GTP-bound state. It is ubiquitously
expressed in all tissues throughout development and is
important in cell cycle progression, motility,
morphogenesis, and angiogenesis. In lymphocytes, GRB2 is
associated with antigen receptor signaling components.
GRB2 contains an N-terminal SH3 domain, a central SH2
domain, and a C-terminal SH3 domain. The C-terminal SH3
domain of GRB2 binds to Gab2 (Grb2-associated binder 2)
through epitopes containing RxxK motifs, as well as to
the proline-rich C-terminus of FGRF2. SH3 domains are
protein interaction domains that typically bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 53
Score = 40.2 bits (94), Expect = 1e-05
Identities = 14/38 (36%), Positives = 22/38 (57%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGEVNGTTGAFPMSYVQ 129
+L F++ D + + D NW+ G +G TG FP +YV
Sbjct: 15 ELGFRRGDFIEVMDNSDPNWWKGACHGQTGMFPRNYVT 52
Score = 33.7 bits (77), Expect = 0.004
Identities = 11/22 (50%), Positives = 14/22 (63%)
Query: 131 DNNWFYGEVNGTTGAFPMSYVQ 152
D NW+ G +G TG FP +YV
Sbjct: 31 DPNWWKGACHGQTGMFPRNYVT 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 = 40.4 bits (95), Expect = 1e-05
Identities = 16/38 (42%), Positives = 28/38 (73%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGEVNGTTGAFPMSYVQ 129
+L+F++ DI+ + +K D+ W+ G +NG TG FP +YV+
Sbjct: 15 ELSFQEGDIIYVTKKNDDGWYEGVLNGVTGLFPGNYVE 52
Score = 31.1 bits (71), Expect = 0.035
Identities = 11/22 (50%), Positives = 16/22 (72%)
Query: 131 DNNWFYGEVNGTTGAFPMSYVQ 152
D+ W+ G +NG TG FP +YV+
Sbjct: 31 DDGWYEGVLNGVTGLFPGNYVE 52
>gnl|CDD|212730 cd11796, SH3_DNMBP_N3, Third N-terminal Src homology 3 domain of
Dynamin Binding Protein, also called Tuba. DNMBP or
Tuba is a cdc42-specific guanine nucleotide exchange
factor (GEF) that contains four N-terminal SH3 domains,
a central RhoGEF [or Dbl homology (DH)] domain followed
by a Bin/Amphiphysin/Rvs (BAR) domain, and two
C-terminal SH3 domains. It provides a functional link
between dynamin and key regulatory proteins of the actin
cytoskeleton. It plays an important role in regulating
cell junction configuration. The four N-terminal SH3
domains of DNMBP binds the GTPase dynamin, which plays
an important role in the fission of endocytic vesicles.
SH3 domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 51
Score = 39.6 bits (93), Expect = 2e-05
Identities = 14/37 (37%), Positives = 23/37 (62%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGEVNGTTGAFPMSYV 128
+L+ ++ D+V + +D WF GE+NG G FP +V
Sbjct: 15 ELDLREGDVVTITGILDKGWFRGELNGRRGIFPEGFV 51
Score = 30.4 bits (69), Expect = 0.062
Identities = 11/21 (52%), Positives = 13/21 (61%)
Query: 131 DNNWFYGEVNGTTGAFPMSYV 151
D WF GE+NG G FP +V
Sbjct: 31 DKGWFRGELNGRRGIFPEGFV 51
>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 = 39.6 bits (93), Expect = 2e-05
Identities = 14/35 (40%), Positives = 22/35 (62%)
Query: 93 LNFKKDDIVILRRKIDNNWFYGEVNGTTGAFPMSY 127
L FKK D++ + R++D NW G + G FP+S+
Sbjct: 19 LTFKKGDVITVIRRVDENWAEGRLGDKIGIFPISF 53
>gnl|CDD|233043 TIGR00599, rad18, DNA repair protein rad18. All proteins in this
family for which functions are known are involved in
nucleotide excision repair.This family is based on the
phylogenomic analysis of JA Eisen (1999, Ph.D. Thesis,
Stanford University) [DNA metabolism, DNA replication,
recombination, and repair].
Length = 397
Score = 42.7 bits (100), Expect = 3e-05
Identities = 23/70 (32%), Positives = 34/70 (48%), Gaps = 5/70 (7%)
Query: 6 LNDLLECSVCLDRLDTSSKVLPCQHTFCKKCLEEIVSSHKELRCPECRVLVECKVDELPP 65
L+ L C +C D D + C HTFC C+ +S+ +CP CR E + +L
Sbjct: 23 LDTSLRCHICKDFFD-VPVLTSCSHTFCSLCIRRCLSNQP--KCPLCR--AEDQESKLRS 77
Query: 66 NVLLMRILEG 75
N L+ I+E
Sbjct: 78 NWLVSEIVES 87
>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 = 39.2 bits (91), Expect = 4e-05
Identities = 16/39 (41%), Positives = 27/39 (69%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGEVNGTTGAFPMSYVQI 130
+L+F K ++ + K D +W+ GE+NG TG FP +YV++
Sbjct: 16 ELSFSKGQLINVLNKDDPDWWQGEINGVTGLFPSNYVKM 54
Score = 32.6 bits (74), Expect = 0.009
Identities = 12/22 (54%), Positives = 17/22 (77%)
Query: 131 DNNWFYGEVNGTTGAFPMSYVQ 152
D +W+ GE+NG TG FP +YV+
Sbjct: 32 DPDWWQGEINGVTGLFPSNYVK 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 = 38.9 bits (91), Expect = 4e-05
Identities = 14/39 (35%), Positives = 22/39 (56%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGEVNGTTGAFPMSYVQI 130
+++F DDI+ ID W+ G G G FP +YV++
Sbjct: 15 EISFDPDDIITNIEMIDEGWWRGVCRGKYGLFPANYVEL 53
Score = 31.6 bits (72), Expect = 0.020
Identities = 10/24 (41%), Positives = 13/24 (54%)
Query: 129 QIDNNWFYGEVNGTTGAFPMSYVQ 152
ID W+ G G G FP +YV+
Sbjct: 29 MIDEGWWRGVCRGKYGLFPANYVE 52
>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 = 39.2 bits (91), Expect = 5e-05
Identities = 15/38 (39%), Positives = 27/38 (71%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGEVNGTTGAFPMSYVQ 129
+L+F++ I+ + +K D+ W+ G +NG TG FP +YV+
Sbjct: 18 ELSFQEGAIIYVIKKNDDGWYEGVMNGVTGLFPGNYVE 55
Score = 31.9 bits (72), Expect = 0.023
Identities = 11/24 (45%), Positives = 17/24 (70%)
Query: 131 DNNWFYGEVNGTTGAFPMSYVQFV 154
D+ W+ G +NG TG FP +YV+ +
Sbjct: 34 DDGWYEGVMNGVTGLFPGNYVESI 57
>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 = 38.9 bits (91), Expect = 5e-05
Identities = 14/37 (37%), Positives = 25/37 (67%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGEVNGTTGAFPMSYV 128
+L+FKK D + L R++ ++W+ G++NG G P Y+
Sbjct: 15 ELSFKKGDSLTLYRQVSDDWWRGQLNGQDGLVPHKYI 51
Score = 30.4 bits (69), Expect = 0.050
Identities = 9/27 (33%), Positives = 16/27 (59%)
Query: 127 YVQIDNNWFYGEVNGTTGAFPMSYVQF 153
Y Q+ ++W+ G++NG G P Y+
Sbjct: 27 YRQVSDDWWRGQLNGQDGLVPHKYITL 53
>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 = 5e-05
Identities = 17/36 (47%), Positives = 23/36 (63%)
Query: 93 LNFKKDDIVILRRKIDNNWFYGEVNGTTGAFPMSYV 128
L F KDDI+ + R++D NW G + G FP+SYV
Sbjct: 20 LPFAKDDILTVIRRVDENWAEGMLGDKIGIFPISYV 55
>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 = 38.9 bits (90), Expect = 5e-05
Identities = 15/38 (39%), Positives = 24/38 (63%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGEVNGTTGAFPMSYVQ 129
+L+F K D++ + R + W+ G NG TG FP +YV+
Sbjct: 15 ELSFSKGDVIHVTRVEEGGWWEGTHNGRTGWFPSNYVR 52
Score = 28.5 bits (63), Expect = 0.28
Identities = 10/26 (38%), Positives = 15/26 (57%)
Query: 129 QIDNNWFYGEVNGTTGAFPMSYVQFV 154
+ W+ G NG TG FP +YV+ +
Sbjct: 29 VEEGGWWEGTHNGRTGWFPSNYVREI 54
>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 = 38.9 bits (91), Expect = 5e-05
Identities = 15/41 (36%), Positives = 24/41 (58%), Gaps = 2/41 (4%)
Query: 92 DLNFKKDDIVILRRK--IDNNWFYGEVNGTTGAFPMSYVQI 130
+L ++ DIV + K D W+ GE+NG G FP ++V+
Sbjct: 15 ELTLREGDIVTILSKDCEDKGWWKGELNGKRGVFPDNFVEP 55
>gnl|CDD|212922 cd11989, SH3_Intersectin1_2, Second Src homology 3 domain (or SH3B)
of Intersectin-1. Intersectin-1 (ITSN1) is an adaptor
protein that functions in exo- and endocytosis, actin
cytoskeletal reorganization, and signal transduction. It
plays a role in clathrin-coated pit (CCP) formation. It
binds to many proteins through its multidomain structure
and facilitate the assembly of multimeric complexes.
ITSN1 localizes in membranous organelles, CCPs, the
Golgi complex, and may be involved in the cell membrane
trafficking system. It exists in alternatively spliced
short and long isoforms. The short isoform contains two
Eps15 homology domains (EH1 and EH2), a coiled-coil
region and five SH3 domains (SH3A-E), while the long
isoform, in addition, contains RhoGEF (also called
Dbl-homologous or DH), Pleckstrin homology (PH) and C2
domains. The second SH3 domain (or SH3B) of ITSN1 has
been shown to bind WNK and CdGAP. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 52
Score = 38.5 bits (89), Expect = 5e-05
Identities = 17/38 (44%), Positives = 26/38 (68%), Gaps = 1/38 (2%)
Query: 93 LNFKKDDIVILRRKIDNNWFYGEVNGTTGAFPMSYVQI 130
LNF K+D++ + + D W++GEV G G FP SYV++
Sbjct: 16 LNFNKNDVITVLEQQDM-WWFGEVQGQKGWFPKSYVKL 52
Score = 30.1 bits (67), Expect = 0.090
Identities = 11/20 (55%), Positives = 14/20 (70%)
Query: 134 WFYGEVNGTTGAFPMSYVQF 153
W++GEV G G FP SYV+
Sbjct: 33 WWFGEVQGQKGWFPKSYVKL 52
>gnl|CDD|212755 cd11821, SH3_ASAP, Src homology 3 domain of ArfGAP with SH3 domain,
ankyrin repeat and PH domain containing proteins. ASAPs
are Arf GTPase activating proteins (GAPs) and they
function in regulating cell growth, migration, and
invasion. They contain an N-terminal BAR domain,
followed by a Pleckstrin homology (PH) domain, an Arf
GAP domain, ankyrin (ANK) repeats, and a C-terminal SH3
domain. Vertebrates contain at least three members,
ASAP1, ASAP2, and ASAP3, but some ASAP3 proteins do not
seem to harbor a C-terminal SH3 domain. ASAP1 and ASAP2
show GTPase activating protein (GAP) activity towards
Arf1 and Arf5. They do not show GAP activity towards
Arf6, but are able to mediate Arf6 signaling by binding
stably to GTP-Arf6. ASAP3 is an Arf6-specific GAP. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 53
Score = 38.4 bits (90), Expect = 6e-05
Identities = 11/39 (28%), Positives = 23/39 (58%), Gaps = 3/39 (7%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGEVNGT---TGAFPMSY 127
+L F + +I+++ + D+ W+ G + G G FP+S+
Sbjct: 15 ELTFSEGEIIVVTGEEDDEWWEGHIEGDPSRRGVFPVSF 53
Score = 27.3 bits (61), Expect = 0.77
Identities = 8/25 (32%), Positives = 14/25 (56%), Gaps = 3/25 (12%)
Query: 129 QIDNNWFYGEVNGT---TGAFPMSY 150
+ D+ W+ G + G G FP+S+
Sbjct: 29 EEDDEWWEGHIEGDPSRRGVFPVSF 53
>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 = 38.4 bits (89), Expect = 6e-05
Identities = 15/38 (39%), Positives = 26/38 (68%), Gaps = 1/38 (2%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGEVNGTTGAFPMSYVQ 129
DL F++ D++++ +K D +W+ G V TG FP +YV+
Sbjct: 15 DLTFQQGDVILVTKK-DGDWWTGTVGDKTGVFPSNYVR 51
>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 = 38.5 bits (89), Expect = 8e-05
Identities = 15/40 (37%), Positives = 27/40 (67%), Gaps = 1/40 (2%)
Query: 92 DLNFKKDDIV-ILRRKIDNNWFYGEVNGTTGAFPMSYVQI 130
+L+FK+ DI+ +L + D NW+ E+NG G P +Y+++
Sbjct: 16 ELSFKRGDILKVLNEECDQNWYKAELNGKDGFIPKNYIEM 55
Score = 29.2 bits (65), Expect = 0.16
Identities = 9/22 (40%), Positives = 14/22 (63%)
Query: 131 DNNWFYGEVNGTTGAFPMSYVQ 152
D NW+ E+NG G P +Y++
Sbjct: 33 DQNWYKAELNGKDGFIPKNYIE 54
>gnl|CDD|212771 cd11837, SH3_Intersectin_2, Second Src homology 3 domain (or SH3B)
of Intersectin. Intersectins (ITSNs) are adaptor
proteins that function in exo- and endocytosis, actin
cytoskeletal reorganization, and signal transduction.
They are essential for initiating clathrin-coated pit
formation. They bind to many proteins through their
multidomain structure and facilitate the assembly of
multimeric complexes. Vertebrates contain two ITSN
proteins, ITSN1 and ITSN2, which exist in alternatively
spliced short and long isoforms. The short isoforms
contain two Eps15 homology domains (EH1 and EH2), a
coiled-coil region and five SH3 domains (SH3A-E), while
the long isoforms, in addition, contain RhoGEF (also
called Dbl-homologous or DH), Pleckstrin homology (PH)
and C2 domains. ITSN1 and ITSN2 are both widely
expressed, with variations depending on tissue type and
stage of development. The second SH3 domain (or SH3B) of
ITSN1 has been shown to bind WNK and CdGAP. SH3 domains
are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 53
Score = 38.1 bits (89), Expect = 9e-05
Identities = 15/40 (37%), Positives = 24/40 (60%), Gaps = 2/40 (5%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGEV-NGTTGAFPMSYVQI 130
L+F K DI+ + + + W++GE+ G G FP SYV+
Sbjct: 15 HLSFAKGDIITVLEQQEM-WWFGELEGGEEGWFPKSYVKE 53
>gnl|CDD|212775 cd11841, SH3_SH3YL1_like, Src homology 3 domain of SH3 domain
containing Ysc84-like 1 (SH3YL1) protein. SH3YL1
localizes to the plasma membrane and is required for
dorsal ruffle formation. It binds phosphoinositides
(PIs) with high affinity through its N-terminal SYLF
domain (also called DUF500). In addition, SH3YL1
contains a C-terminal SH3 domain which has been reported
to bind to N-WASP, dynamin 2, and SHIP2 (a PI
5-phosphatase). SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP motifs.
They play versatile and diverse roles in the cell
including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 54
Score = 38.1 bits (89), Expect = 1e-04
Identities = 14/40 (35%), Positives = 21/40 (52%), Gaps = 2/40 (5%)
Query: 92 DLNFKKDD--IVILRRKIDNNWFYGEVNGTTGAFPMSYVQ 129
DL+F+ D V+ R +W+ G + G G FP +YV
Sbjct: 15 DLSFQAGDRITVLTRTDSQFDWWEGRLRGRVGIFPANYVS 54
Score = 29.3 bits (66), Expect = 0.16
Identities = 8/21 (38%), Positives = 12/21 (57%)
Query: 132 NNWFYGEVNGTTGAFPMSYVQ 152
+W+ G + G G FP +YV
Sbjct: 34 FDWWEGRLRGRVGIFPANYVS 54
>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 = 37.9 bits (88), Expect = 1e-04
Identities = 14/38 (36%), Positives = 27/38 (71%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGEVNGTTGAFPMSYVQ 129
+L+F ++D +I +D++W+ GE +G+ G FP +YV+
Sbjct: 15 ELSFFENDKIINIEFVDDDWWLGECHGSRGLFPSNYVE 52
Score = 32.5 bits (74), Expect = 0.009
Identities = 10/23 (43%), Positives = 18/23 (78%)
Query: 130 IDNNWFYGEVNGTTGAFPMSYVQ 152
+D++W+ GE +G+ G FP +YV+
Sbjct: 30 VDDDWWLGECHGSRGLFPSNYVE 52
>gnl|CDD|212803 cd11870, SH3_p67phox-like_C, C-terminal Src Homology 3 domain of
the p67phox subunit of NADPH oxidase and similar
proteins. This subfamily is composed of p67phox, NADPH
oxidase activator 1 (Noxa1), and similar proteins.
p67phox, also called Neutrophil cytosol factor 2
(NCF-2), and Noxa1 are homologs and are the cytosolic
subunits of the phagocytic (Nox2) and nonphagocytic
(Nox1) NADPH oxidase complexes, respectively. NADPH
oxidase catalyzes the transfer of electrons from NADPH
to oxygen during phagocytosis forming superoxide and
reactive oxygen species. p67phox and Noxa1 play
regulatory roles. p67phox contains N-terminal TPR, first
SH3 (or N-terminal or central SH3), PB1, and C-terminal
SH3 domains. Noxa1 has a similar domain architecture
except it is lacking the N-terminal SH3 domain. The TPR
domain of both binds activated GTP-bound Rac, while the
C-terminal SH3 domain of p67phox and Noxa1 binds the
polyproline motif found at the C-terminus of p47phox and
Noxo1, respectively. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP motifs.
They play versatile and diverse roles in the cell
including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 53
Score = 37.9 bits (88), Expect = 1e-04
Identities = 11/38 (28%), Positives = 20/38 (52%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGEVNGTTGAFPMSYVQ 129
DL F++ D + + +++ W G +G G FP +V
Sbjct: 15 DLGFREGDTIDVLSEVNEAWLEGHSDGRVGIFPKCFVV 52
Score = 27.9 bits (62), Expect = 0.46
Identities = 7/24 (29%), Positives = 12/24 (50%)
Query: 129 QIDNNWFYGEVNGTTGAFPMSYVQ 152
+++ W G +G G FP +V
Sbjct: 29 EVNEAWLEGHSDGRVGIFPKCFVV 52
>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 = 37.8 bits (88), Expect = 1e-04
Identities = 16/40 (40%), Positives = 25/40 (62%), Gaps = 2/40 (5%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYG--EVNGTTGAFPMSYVQ 129
+L K+ DIV + +K ++ WF G + G TG FP S+V+
Sbjct: 15 ELELKEGDIVFVHKKREDGWFKGTLQRTGKTGLFPGSFVE 54
>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 = 37.3 bits (86), Expect = 2e-04
Identities = 15/43 (34%), Positives = 27/43 (62%), Gaps = 2/43 (4%)
Query: 89 NILDLNFKKDDIVILRRKI--DNNWFYGEVNGTTGAFPMSYVQ 129
++ +L+ ++ D+V + +I D W+ GE NG G FP +YV+
Sbjct: 13 DMRELSLREGDVVRIYSRIGGDQGWWKGETNGRIGWFPSTYVE 55
Score = 31.5 bits (71), Expect = 0.027
Identities = 11/22 (50%), Positives = 14/22 (63%)
Query: 131 DNNWFYGEVNGTTGAFPMSYVQ 152
D W+ GE NG G FP +YV+
Sbjct: 34 DQGWWKGETNGRIGWFPSTYVE 55
>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 = 37.3 bits (86), Expect = 2e-04
Identities = 15/38 (39%), Positives = 25/38 (65%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGEVNGTTGAFPMSYVQ 129
+L+F + I+ + +K D+ W+ G NG TG FP +YV+
Sbjct: 15 ELSFMEGAIIYVIKKNDDGWYEGVCNGVTGLFPGNYVE 52
Score = 31.5 bits (71), Expect = 0.031
Identities = 11/26 (42%), Positives = 17/26 (65%)
Query: 131 DNNWFYGEVNGTTGAFPMSYVQFVWY 156
D+ W+ G NG TG FP +YV+ + +
Sbjct: 31 DDGWYEGVCNGVTGLFPGNYVESIMH 56
>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 = 37.1 bits (86), Expect = 2e-04
Identities = 14/36 (38%), Positives = 23/36 (63%)
Query: 93 LNFKKDDIVILRRKIDNNWFYGEVNGTTGAFPMSYV 128
L F+KDDI+ + ++D NW G++ G FP+ +V
Sbjct: 22 LKFQKDDIITVISRVDENWAEGKLGDQVGIFPILFV 57
>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 = 37.3 bits (86), Expect = 2e-04
Identities = 15/40 (37%), Positives = 23/40 (57%), Gaps = 2/40 (5%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGEVN--GTTGAFPMSYVQ 129
+++FK D ++ + ID W YG V G TG P +YV+
Sbjct: 17 EVSFKDGDTIVNVQTIDEGWMYGTVQRTGKTGMLPANYVE 56
Score = 29.6 bits (66), Expect = 0.12
Identities = 15/40 (37%), Positives = 20/40 (50%), Gaps = 2/40 (5%)
Query: 115 EVNGTTGAFPMSYVQIDNNWFYGEVN--GTTGAFPMSYVQ 152
EV+ G ++ ID W YG V G TG P +YV+
Sbjct: 17 EVSFKDGDTIVNVQTIDEGWMYGTVQRTGKTGMLPANYVE 56
>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 = 37.0 bits (86), Expect = 2e-04
Identities = 14/38 (36%), Positives = 24/38 (63%), Gaps = 1/38 (2%)
Query: 92 DLNFKKDDIV-ILRRKIDNNWFYGEVNGTTGAFPMSYV 128
+L+FKK I+ +L + D NW+ E++G G P +Y+
Sbjct: 15 ELSFKKGSILKVLNMEDDPNWYKAELDGKEGLIPKNYI 52
>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 = 37.2 bits (86), Expect = 2e-04
Identities = 16/39 (41%), Positives = 25/39 (64%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGEVNGTTGAFPMSYVQI 130
+L F K I+ + K D +W+ GE+NG G FP +YV++
Sbjct: 16 ELAFSKGQIINVLNKEDPDWWKGELNGQVGLFPSNYVKL 54
Score = 31.1 bits (70), Expect = 0.034
Identities = 11/23 (47%), Positives = 16/23 (69%)
Query: 131 DNNWFYGEVNGTTGAFPMSYVQF 153
D +W+ GE+NG G FP +YV+
Sbjct: 32 DPDWWKGELNGQVGLFPSNYVKL 54
>gnl|CDD|227719 COG5432, RAD18, RING-finger-containing E3 ubiquitin ligase [Signal
transduction mechanisms].
Length = 391
Score = 40.1 bits (93), Expect = 2e-04
Identities = 23/87 (26%), Positives = 33/87 (37%), Gaps = 8/87 (9%)
Query: 6 LNDLLECSVCLDRLDTSSKVL-PCQHTFCKKCLEEIVSSHKELRCPECRVLVECKVDELP 64
L+ +L C +C R+ S C HTFC C+ + + CP CR C+ L
Sbjct: 22 LDSMLRCRICDCRI--SIPCETTCGHTFCSLCIRRHLGTQP--FCPVCR-EDPCES-RLR 75
Query: 65 PNVLLMRILEGLFPLVVSFIRFFLNIL 91
+ I E +R L L
Sbjct: 76 GSSGSREINES-HARNRDLLRKVLESL 101
>gnl|CDD|212909 cd11976, SH3_VAV1_2, C-terminal (or second) Src homology 3 domain
of VAV1 protein. VAV1 is expressed predominantly in the
hematopoietic system and it plays an important role in
the development and activation of B and T cells. It is
activated by tyrosine phosphorylation to function as a
guanine nucleotide exchange factor (GEF) for Rho GTPases
following cell surface receptor activation, triggering
various effects such as cytoskeletal reorganization,
transcription regulation, cell cycle progression, and
calcium mobilization. It also serves as a scaffold
protein and has been shown to interact with Ku70, Socs1,
Janus kinase 2, SIAH2, S100B, Abl gene, ZAP-70, SLP76,
and Syk, among others. VAV proteins contain several
domains that enable their function: N-terminal calponin
homology (CH), acidic, RhoGEF (also called
Dbl-homologous or DH), Pleckstrin Homology (PH), C1
(zinc finger), SH2, and two SH3 domains. The C-terminal
SH3 domain of Vav1 interacts with a wide variety of
proteins including cytoskeletal regulators (zyxin),
RNA-binding proteins (Sam68), transcriptional
regulators, viral proteins, and dynamin 2. SH3 domains
are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 54
Score = 36.8 bits (85), Expect = 3e-04
Identities = 16/39 (41%), Positives = 25/39 (64%), Gaps = 1/39 (2%)
Query: 92 DLNFKKDDIV-ILRRKIDNNWFYGEVNGTTGAFPMSYVQ 129
+L+ K+ DI+ IL +K W+ GE+ G G FP +YV+
Sbjct: 15 ELSLKEGDIIKILNKKGQQGWWRGEIYGRVGWFPANYVE 53
Score = 28.4 bits (63), Expect = 0.31
Identities = 9/21 (42%), Positives = 13/21 (61%)
Query: 132 NNWFYGEVNGTTGAFPMSYVQ 152
W+ GE+ G G FP +YV+
Sbjct: 33 QGWWRGEIYGRVGWFPANYVE 53
>gnl|CDD|212712 cd11778, SH3_Bzz1_2, Second Src Homology 3 domain of Bzz1 and
similar domains. Bzz1 (or Bzz1p) is a
WASP/Las17-interacting protein involved in endocytosis
and trafficking to the vacuole. It physically interacts
with type I myosins and functions in the early steps of
endocytosis. Together with other proteins, it induces
membrane scission in yeast. Bzz1 contains an N-terminal
F-BAR (FES-CIP4 Homology and Bin/Amphiphysin/Rvs), a
central coiled-coil, and two C-terminal SH3 domains.
This model represents the second C-terminal SH3 domain.
SH3 domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 51
Score = 36.7 bits (85), Expect = 3e-04
Identities = 14/30 (46%), Positives = 18/30 (60%)
Query: 98 DDIVILRRKIDNNWFYGEVNGTTGAFPMSY 127
D I ++R + W YGE+NG G FP SY
Sbjct: 22 DRIAVIRGDDGSGWTYGEINGVKGLFPTSY 51
Score = 33.6 bits (77), Expect = 0.005
Identities = 11/19 (57%), Positives = 13/19 (68%)
Query: 132 NNWFYGEVNGTTGAFPMSY 150
+ W YGE+NG G FP SY
Sbjct: 33 SGWTYGEINGVKGLFPTSY 51
>gnl|CDD|212911 cd11978, SH3_VAV3_2, C-terminal (or second) Src homology 3 domain
of VAV3 protein. VAV3 is ubiquitously expressed and
functions as a phosphorylation-dependent guanine
nucleotide exchange factor (GEF) for RhoA, RhoG, and
Rac1. It has been implicated to function in the
hematopoietic, bone, cerebellar, and cardiovascular
systems. VAV3 is essential in axon guidance in neurons
that control blood pressure and respiration. It is
overexpressed in prostate cancer cells and it plays a
role in regulating androgen receptor transcriptional
activity. VAV proteins contain several domains that
enable their function: N-terminal calponin homology
(CH), acidic, RhoGEF (also called Dbl-homologous or DH),
Pleckstrin Homology (PH), C1 (zinc finger), SH2, and two
SH3 domains. The SH3 domain of VAV is involved in the
localization of proteins to specific sites within the
cell, by interacting with proline-rich sequences within
target proteins. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP motifs.
They play versatile and diverse roles in the cell
including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 56
Score = 36.9 bits (85), Expect = 3e-04
Identities = 18/41 (43%), Positives = 25/41 (60%), Gaps = 1/41 (2%)
Query: 92 DLNFKKDDIV-ILRRKIDNNWFYGEVNGTTGAFPMSYVQID 131
+L+ K D+V I + N W+ GEVNG G FP +YV+ D
Sbjct: 16 ELSLLKGDVVKIYTKMSTNGWWRGEVNGRVGWFPSTYVEED 56
Score = 32.7 bits (74), Expect = 0.011
Identities = 12/21 (57%), Positives = 15/21 (71%)
Query: 132 NNWFYGEVNGTTGAFPMSYVQ 152
N W+ GEVNG G FP +YV+
Sbjct: 34 NGWWRGEVNGRVGWFPSTYVE 54
>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 = 36.7 bits (85), Expect = 3e-04
Identities = 12/39 (30%), Positives = 20/39 (51%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGEVNGTTGAFPMSYVQI 130
+L FK +I+ + D NW+ G + G FP ++V
Sbjct: 16 ELTFKAGEIITVLDDSDPNWWKGSNHRGEGLFPANFVTA 54
Score = 27.4 bits (61), Expect = 0.79
Identities = 8/22 (36%), Positives = 12/22 (54%)
Query: 131 DNNWFYGEVNGTTGAFPMSYVQ 152
D NW+ G + G FP ++V
Sbjct: 32 DPNWWKGSNHRGEGLFPANFVT 53
>gnl|CDD|227827 COG5540, COG5540, RING-finger-containing ubiquitin ligase
[Posttranslational modification, protein turnover,
chaperones].
Length = 374
Score = 39.6 bits (92), Expect = 3e-04
Identities = 16/57 (28%), Positives = 28/57 (49%), Gaps = 10/57 (17%)
Query: 11 ECSVCLDRLDTSSK--VLPCQHTFCKKCLEEIVSSHKELRCPECRVLVECKVDELPP 65
EC++C+ + + VLPC H F C+++ + + +CP CR +PP
Sbjct: 325 ECAICMSNFIKNDRLRVLPCDHRFHVGCVDKWLLGYS-NKCPVCRT-------AIPP 373
>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 = 36.6 bits (85), Expect = 3e-04
Identities = 13/40 (32%), Positives = 22/40 (55%), Gaps = 2/40 (5%)
Query: 92 DLNFKKDDIVILRRKIDN--NWFYGEVNGTTGAFPMSYVQ 129
+++F+ DI+ + W GE+ G TG FP +YV+
Sbjct: 15 EISFQPGDIIQVDESQVAEPGWLAGELKGKTGWFPANYVE 54
>gnl|CDD|222454 pfam13920, zf-C3HC4_3, Zinc finger, C3HC4 type (RING finger).
Length = 49
Score = 36.2 bits (84), Expect = 4e-04
Identities = 17/51 (33%), Positives = 26/51 (50%), Gaps = 5/51 (9%)
Query: 8 DLLECSVCLDRLDTSSKVLPCQHT-FCKKCLEEIVSSHKELRCPECRVLVE 57
+ C +CL+R + LPC H C++C + + S K CP CR +E
Sbjct: 1 EDDLCVICLER-PRNVVFLPCGHLCLCEECAKRLRSKKK---CPICRQPIE 47
>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 = 36.3 bits (84), Expect = 4e-04
Identities = 12/36 (33%), Positives = 22/36 (61%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGEVNGTTGAFPMSY 127
DL+F++ D +++ +D W G +NG G FP ++
Sbjct: 15 DLSFQRGDRILVTEHLDAEWSRGRLNGREGIFPRAF 50
Score = 26.7 bits (59), Expect = 1.5
Identities = 8/22 (36%), Positives = 12/22 (54%)
Query: 129 QIDNNWFYGEVNGTTGAFPMSY 150
+D W G +NG G FP ++
Sbjct: 29 HLDAEWSRGRLNGREGIFPRAF 50
>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 = 36.5 bits (84), Expect = 4e-04
Identities = 15/38 (39%), Positives = 24/38 (63%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGEVNGTTGAFPMSYVQ 129
+L+ K DI+ + R + W+ G +NG TG FP +YV+
Sbjct: 17 ELSVCKGDIIYVTRVEEGGWWEGTLNGKTGWFPSNYVR 54
Score = 28.4 bits (63), Expect = 0.39
Identities = 10/22 (45%), Positives = 15/22 (68%)
Query: 131 DNNWFYGEVNGTTGAFPMSYVQ 152
+ W+ G +NG TG FP +YV+
Sbjct: 33 EGGWWEGTLNGKTGWFPSNYVR 54
>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 = 36.2 bits (84), Expect = 4e-04
Identities = 14/38 (36%), Positives = 23/38 (60%), Gaps = 1/38 (2%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGEVNGTTGAFPMSYVQ 129
DL F D++++ +K D W+ G + TG FP +YV+
Sbjct: 15 DLTFNAGDVILVTKK-DGEWWTGTIGDRTGIFPSNYVR 51
Score = 27.4 bits (61), Expect = 0.63
Identities = 9/22 (40%), Positives = 13/22 (59%)
Query: 131 DNNWFYGEVNGTTGAFPMSYVQ 152
D W+ G + TG FP +YV+
Sbjct: 30 DGEWWTGTIGDRTGIFPSNYVR 51
>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 = 36.4 bits (84), Expect = 4e-04
Identities = 15/36 (41%), Positives = 22/36 (61%)
Query: 93 LNFKKDDIVILRRKIDNNWFYGEVNGTTGAFPMSYV 128
L F KD+I+ + R++D NW G + G FP+ YV
Sbjct: 20 LTFTKDEILTVIRRVDENWAEGMLGDKIGIFPILYV 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 = 35.9 bits (83), Expect = 5e-04
Identities = 14/37 (37%), Positives = 23/37 (62%)
Query: 93 LNFKKDDIVILRRKIDNNWFYGEVNGTTGAFPMSYVQ 129
L+F++ DI+ + D NW+ G ++G G FP +YV
Sbjct: 16 LSFRRGDIIEVLDCPDPNWWRGRISGRVGFFPRNYVH 52
Score = 30.2 bits (68), Expect = 0.078
Identities = 10/22 (45%), Positives = 14/22 (63%)
Query: 131 DNNWFYGEVNGTTGAFPMSYVQ 152
D NW+ G ++G G FP +YV
Sbjct: 31 DPNWWRGRISGRVGFFPRNYVH 52
>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 = 36.1 bits (83), Expect = 6e-04
Identities = 16/40 (40%), Positives = 22/40 (55%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGEVNGTTGAFPMSYVQID 131
+L FK DI+ + D NW+ GE TG FP ++V D
Sbjct: 16 ELTFKAGDIITILDDSDPNWWKGETPQGTGLFPSNFVTAD 55
Score = 26.8 bits (59), Expect = 1.2
Identities = 10/21 (47%), Positives = 13/21 (61%)
Query: 131 DNNWFYGEVNGTTGAFPMSYV 151
D NW+ GE TG FP ++V
Sbjct: 32 DPNWWKGETPQGTGLFPSNFV 52
>gnl|CDD|212867 cd11934, SH3_Lasp1_C, C-terminal Src Homology 3 domain of LIM and
SH3 domain protein 1. Lasp1 is a cytoplasmic protein
that binds focal adhesion proteins and is involved in
cell signaling, migration, and proliferation. It is
overexpressed in several cancer cells including breast,
ovarian, bladder, and liver. In cancer cells, it can be
found in the nucleus; its degree of nuclear localization
correlates with tumor size and poor prognosis. Lasp1 is
a 36kD protein containing an N-terminal LIM domain, two
nebulin repeats, and a C-terminal SH3 domain. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 59
Score = 36.1 bits (83), Expect = 6e-04
Identities = 14/40 (35%), Positives = 25/40 (62%), Gaps = 2/40 (5%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGEV--NGTTGAFPMSYVQ 129
+++F+ D ++ ++ID+ W YG V G TG P +YV+
Sbjct: 18 EVSFQDGDTIVNVQQIDDGWMYGTVERTGDTGMLPANYVE 57
Score = 32.7 bits (74), Expect = 0.009
Identities = 16/40 (40%), Positives = 22/40 (55%), Gaps = 2/40 (5%)
Query: 115 EVNGTTGAFPMSYVQIDNNWFYGEV--NGTTGAFPMSYVQ 152
EV+ G ++ QID+ W YG V G TG P +YV+
Sbjct: 18 EVSFQDGDTIVNVQQIDDGWMYGTVERTGDTGMLPANYVE 57
>gnl|CDD|212692 cd11758, SH3_CRK_N, N-terminal Src Homology 3 domain of Ct10
Regulator of Kinase adaptor proteins. CRK adaptor
proteins consists of SH2 and SH3 domains, which bind
tyrosine-phosphorylated peptides and proline-rich
motifs, respectively. They function downstream of
protein tyrosine kinases in many signaling pathways
started by various extracellular signals, including
growth and differentiation factors. Cellular CRK (c-CRK)
contains a single SH2 domain, followed by N-terminal and
C-terminal SH3 domains. It is involved in the regulation
of many cellular processes including cell growth,
motility, adhesion, and apoptosis. CRK has been
implicated in the malignancy of various human cancers.
The N-terminal SH3 domain of CRK binds a number of
target proteins including DOCK180, C3G, SOS, and cABL.
The CRK family includes two alternatively spliced
protein forms, CRKI and CRKII, that are expressed by the
CRK gene, and the CRK-like (CRKL) protein, which is
expressed by a distinct gene (CRKL). SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 55
Score = 35.4 bits (82), Expect = 8e-04
Identities = 15/39 (38%), Positives = 22/39 (56%), Gaps = 1/39 (2%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGE-VNGTTGAFPMSYVQ 129
DL FKK +I+ + RK + W+ G TG P+ YV+
Sbjct: 16 DLPFKKGEILTVIRKPEEQWWNARNSEGKTGMIPVPYVE 54
>gnl|CDD|212752 cd11818, SH3_Eve1_5, Fifth Src homology 3 domain of ADAM-binding
protein Eve-1. Eve-1, also called SH3 domain-containing
protein 19 (SH3D19) or EEN-binding protein (EBP), exists
in multiple alternatively spliced isoforms. The longest
isoform contains five SH3 domain in the C-terminal
region and seven proline-rich motifs in the N-terminal
region. It is abundantly expressed in skeletal muscle
and heart, and may be involved in regulating the
activity of ADAMs (A disintegrin and metalloproteases).
Eve-1 interacts with EEN, an endophilin involved in
endocytosis and may be the target of the MLL-EEN fusion
protein that is implicated in leukemogenesis. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 50
Score = 35.2 bits (81), Expect = 0.001
Identities = 14/36 (38%), Positives = 21/36 (58%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGEVNGTTGAFPMSY 127
+L+FK DI+ ID W GE+ G +G FP ++
Sbjct: 15 ELSFKAGDIITELESIDEEWMSGELRGKSGIFPKNF 50
Score = 27.8 bits (62), Expect = 0.41
Identities = 9/21 (42%), Positives = 13/21 (61%)
Query: 130 IDNNWFYGEVNGTTGAFPMSY 150
ID W GE+ G +G FP ++
Sbjct: 30 IDEEWMSGELRGKSGIFPKNF 50
>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 = 35.0 bits (81), Expect = 0.001
Identities = 13/37 (35%), Positives = 21/37 (56%), Gaps = 2/37 (5%)
Query: 95 FKKDDIVILRRKIDNNWFYGEV--NGTTGAFPMSYVQ 129
F++ D++I ID+ W G V G +G P +YV+
Sbjct: 18 FQEGDVIINVEIIDDGWMEGTVQRTGQSGMLPANYVE 54
>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 = 34.9 bits (81), Expect = 0.001
Identities = 15/37 (40%), Positives = 22/37 (59%)
Query: 93 LNFKKDDIVILRRKIDNNWFYGEVNGTTGAFPMSYVQ 129
L+ +K D V++ K + W+ GE NG G FP +YV
Sbjct: 16 LSLRKGDRVLVLEKSSDGWWRGECNGQVGWFPSNYVT 52
Score = 28.8 bits (65), Expect = 0.22
Identities = 10/19 (52%), Positives = 12/19 (63%)
Query: 134 WFYGEVNGTTGAFPMSYVQ 152
W+ GE NG G FP +YV
Sbjct: 34 WWRGECNGQVGWFPSNYVT 52
>gnl|CDD|212746 cd11812, SH3_AHI-1, Src Homology 3 domain of Abelson helper
integration site-1 (AHI-1). AHI-1, also called
Jouberin, is expressed in high levels in the brain,
gonad tissues, and skeletal muscle. It is an adaptor
protein that interacts with the small GTPase Rab8a and
regulates it distribution and function, affecting cilium
formation and vesicle transport. Mutations in the AHI-1
gene can cause Joubert syndrome, a disorder
characterized by brainstem malformations, cerebellar
aplasia/hypoplasia, and retinal dystrophy. AHI-1
variation is also associated with susceptibility to
schizophrenia and type 2 diabetes mellitus progression.
AHI-1 contains WD40 and SH3 domains. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 52
Score = 34.8 bits (80), Expect = 0.001
Identities = 15/38 (39%), Positives = 24/38 (63%), Gaps = 1/38 (2%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGE-VNGTTGAFPMSYV 128
+L + DI+ + K ++NW++G VNG G FP +YV
Sbjct: 15 ELTIHRGDIIRVLYKDNDNWWFGSLVNGQQGYFPANYV 52
Score = 29.0 bits (65), Expect = 0.17
Identities = 13/23 (56%), Positives = 16/23 (69%), Gaps = 2/23 (8%)
Query: 131 DN-NWFYGE-VNGTTGAFPMSYV 151
DN NW++G VNG G FP +YV
Sbjct: 30 DNDNWWFGSLVNGQQGYFPANYV 52
>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 = 34.9 bits (81), Expect = 0.002
Identities = 16/46 (34%), Positives = 26/46 (56%), Gaps = 6/46 (13%)
Query: 91 LDLNFKKDDIVILRRKID-----NNWFYGEV-NGTTGAFPMSYVQI 130
++L+ KK DIV + K D + W+ G +G G FP +YV++
Sbjct: 15 MELSLKKGDIVAVLSKTDPLGRDSEWWKGRTRDGRIGWFPSNYVEV 60
>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 = 34.8 bits (80), Expect = 0.002
Identities = 14/39 (35%), Positives = 26/39 (66%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGEVNGTTGAFPMSYVQI 130
+L F+K+DI+ + + D + + GE+NG G FP +V++
Sbjct: 15 ELGFRKNDIITIISQKDEHCWVGELNGLRGWFPAKFVEL 53
>gnl|CDD|227861 COG5574, PEX10, RING-finger-containing E3 ubiquitin ligase
[Posttranslational modification, protein turnover,
chaperones].
Length = 271
Score = 37.2 bits (86), Expect = 0.002
Identities = 16/43 (37%), Positives = 21/43 (48%), Gaps = 1/43 (2%)
Query: 11 ECSVCLDRLDTSSKVLPCQHTFCKKCLEEIVSSHKELRCPECR 53
+C +CL+ + S PC H FC CL + K CP CR
Sbjct: 217 KCFLCLEEPEVPSC-TPCGHLFCLSCLLISWTKKKYEFCPLCR 258
>gnl|CDD|212703 cd11769, SH3_CSK, Src Homology 3 domain of C-terminal Src kinase.
CSK is a cytoplasmic (or nonreceptor) tyr kinase
containing the Src homology domains, SH3 and SH2,
N-terminal to the catalytic tyr kinase domain. They
negatively regulate the activity of Src kinases that are
anchored to the plasma membrane. To inhibit Src kinases,
CSK is translocated to the membrane via binding to
specific transmembrane proteins, G-proteins, or adaptor
proteins near the membrane. CSK catalyzes the tyr
phosphorylation of the regulatory C-terminal tail of Src
kinases, resulting in their inactivation. It is
expressed in a wide variety of tissues and plays a role,
as a regulator of Src, in cell proliferation, survival,
and differentiation, and consequently, in cancer
development and progression. In addition, CSK also shows
Src-independent functions. It is a critical component in
G-protein signaling, and plays a role in cytoskeletal
reorganization and cell migration. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 57
Score = 34.6 bits (80), Expect = 0.002
Identities = 17/41 (41%), Positives = 22/41 (53%), Gaps = 2/41 (4%)
Query: 92 DLNFKKDDI-VILRRKIDNNWFYGE-VNGTTGAFPMSYVQI 130
DL FKK DI I+ D NW+ + +G G P +YVQ
Sbjct: 17 DLPFKKGDILTIVAVTKDPNWYKAKNKDGREGMIPANYVQK 57
>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 = 34.4 bits (79), Expect = 0.002
Identities = 17/42 (40%), Positives = 25/42 (59%), Gaps = 7/42 (16%)
Query: 92 DLNFKKDDIVILRRKI---DNNWFYGEVNGTTGAFPMSYVQI 130
+L+FKK D++ KI D+ WF E+NG G P ++V I
Sbjct: 15 ELSFKKGDVL----KILSSDDIWFKAELNGEEGYVPKNFVDI 52
Score = 27.5 bits (61), Expect = 0.67
Identities = 9/21 (42%), Positives = 13/21 (61%)
Query: 131 DNNWFYGEVNGTTGAFPMSYV 151
D+ WF E+NG G P ++V
Sbjct: 30 DDIWFKAELNGEEGYVPKNFV 50
>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 = 34.4 bits (79), Expect = 0.002
Identities = 14/41 (34%), Positives = 26/41 (63%), Gaps = 2/41 (4%)
Query: 92 DLNFKKDDIVILRRKI--DNNWFYGEVNGTTGAFPMSYVQI 130
+L+FK+ +I+++ K + W+ GE+NG G FP ++V
Sbjct: 17 ELDFKEGEIILIISKDTGEPGWWKGELNGKEGVFPDNFVSQ 57
>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 = 34.4 bits (79), Expect = 0.002
Identities = 15/39 (38%), Positives = 23/39 (58%), Gaps = 2/39 (5%)
Query: 92 DLNFKKDDIVILRRKI--DNNWFYGEVNGTTGAFPMSYV 128
+L KK D++ + K D W+ GE+NG G FP ++V
Sbjct: 15 ELALKKGDVIEVISKETEDEGWWEGELNGRRGFFPDNFV 53
Score = 29.0 bits (65), Expect = 0.22
Identities = 10/21 (47%), Positives = 14/21 (66%)
Query: 131 DNNWFYGEVNGTTGAFPMSYV 151
D W+ GE+NG G FP ++V
Sbjct: 33 DEGWWEGELNGRRGFFPDNFV 53
>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 = 34.2 bits (78), Expect = 0.003
Identities = 14/43 (32%), Positives = 24/43 (55%), Gaps = 2/43 (4%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGEV--NGTTGAFPMSYVQIDN 132
+++F+ D ++ + ID W YG V G TG P +Y++ N
Sbjct: 16 EVSFRDGDYIVNVQPIDEGWMYGTVQRTGRTGMLPANYIEFVN 58
Score = 33.1 bits (75), Expect = 0.008
Identities = 16/44 (36%), Positives = 23/44 (52%), Gaps = 2/44 (4%)
Query: 113 YGEVNGTTGAFPMSYVQIDNNWFYGEV--NGTTGAFPMSYVQFV 154
EV+ G + ++ ID W YG V G TG P +Y++FV
Sbjct: 14 EDEVSFRDGDYIVNVQPIDEGWMYGTVQRTGRTGMLPANYIEFV 57
>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 = 33.7 bits (78), Expect = 0.003
Identities = 14/34 (41%), Positives = 21/34 (61%), Gaps = 1/34 (2%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGEV-NGTTGAFP 124
+L+FKK DI+I+ K D+ W+ G + G G P
Sbjct: 13 ELSFKKGDIIIVLEKSDDGWWKGRLKGGKEGLIP 46
>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 = 34.2 bits (79), Expect = 0.003
Identities = 15/43 (34%), Positives = 25/43 (58%), Gaps = 5/43 (11%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGEV---NGTT--GAFPMSYVQ 129
DLNF ++ + + D +W++GE NG T G FP ++V+
Sbjct: 17 DLNFDVGQLITVTEEEDADWYFGEYVDSNGNTKEGIFPKNFVE 59
>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 = 0.003
Identities = 14/40 (35%), Positives = 24/40 (60%), Gaps = 3/40 (7%)
Query: 93 LNFKK-DDIVILRRKIDNNWFYGE--VNGTTGAFPMSYVQ 129
L+F++ D I +L + + W YGE +G G FP++Y +
Sbjct: 17 LSFEEGDVITLLGPEPRDGWHYGENERSGRRGWFPIAYTE 56
Score = 28.1 bits (63), Expect = 0.39
Identities = 9/23 (39%), Positives = 14/23 (60%), Gaps = 2/23 (8%)
Query: 132 NNWFYGE--VNGTTGAFPMSYVQ 152
+ W YGE +G G FP++Y +
Sbjct: 34 DGWHYGENERSGRRGWFPIAYTE 56
>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 = 0.004
Identities = 12/36 (33%), Positives = 22/36 (61%)
Query: 93 LNFKKDDIVILRRKIDNNWFYGEVNGTTGAFPMSYV 128
L+F+ D +++ RK +W++ E NG G P S++
Sbjct: 16 LSFESGDKLLVLRKPSVDWWWAEHNGCCGYIPASHL 51
Score = 25.0 bits (55), Expect = 4.7
Identities = 7/18 (38%), Positives = 11/18 (61%)
Query: 134 WFYGEVNGTTGAFPMSYV 151
W++ E NG G P S++
Sbjct: 34 WWWAEHNGCCGYIPASHL 51
>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 = 33.6 bits (77), Expect = 0.004
Identities = 15/40 (37%), Positives = 25/40 (62%), Gaps = 1/40 (2%)
Query: 92 DLNFKKDDIV-ILRRKIDNNWFYGEVNGTTGAFPMSYVQI 130
+L F+K DI+ IL + D NW+ E+ G G P +Y+++
Sbjct: 15 ELPFQKGDILKILNMEDDQNWYKAELQGREGYIPKNYIKV 54
Score = 25.5 bits (56), Expect = 4.1
Identities = 8/22 (36%), Positives = 13/22 (59%)
Query: 131 DNNWFYGEVNGTTGAFPMSYVQ 152
D NW+ E+ G G P +Y++
Sbjct: 32 DQNWYKAELQGREGYIPKNYIK 53
>gnl|CDD|212980 cd12047, SH3_Noxa1_C, C-terminal Src Homology 3 domain of NADPH
oxidase activator 1. Noxa1 is a homolog of p67phox and
is a cytosolic subunit of the nonphagocytic NADPH
oxidase complex Nox1, which catalyzes the transfer of
electrons from NADPH to molecular oxygen to form
superoxide. Noxa1 is co-expressed with Nox1 in colon,
stomach, uterus, prostate, and vascular smooth muscle
cells, consistent with its regulatory role. It does not
interact with p40phox, unlike p67phox, making Nox1
activity independent of p40phox, unlike Nox2. Noxa1
contains TPR, PB1, and C-terminal SH3 domains, but lacks
the central SH3 domain that is present in p67phox. The
TPR domain binds activated GTP-bound Rac. The C-terminal
SH3 domain binds the polyproline motif found at the
C-terminus of Noxo1, a homolog of p47phox. SH3 domains
are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 53
Score = 33.6 bits (77), Expect = 0.004
Identities = 10/38 (26%), Positives = 18/38 (47%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGEVNGTTGAFPMSYVQ 129
DL F + D + + +++ W G +G G FP +
Sbjct: 15 DLEFSQGDTIDILSEVNQEWLEGHCDGRIGIFPKCFAV 52
Score = 25.2 bits (55), Expect = 4.7
Identities = 6/24 (25%), Positives = 11/24 (45%)
Query: 129 QIDNNWFYGEVNGTTGAFPMSYVQ 152
+++ W G +G G FP +
Sbjct: 29 EVNQEWLEGHCDGRIGIFPKCFAV 52
>gnl|CDD|212753 cd11819, SH3_Cortactin_like, Src homology 3 domain of Cortactin and
related proteins. This subfamily includes cortactin,
Abp1 (actin-binding protein 1), hematopoietic lineage
cell-specific protein 1 (HS1), and similar proteins.
These proteins are involved in regulating actin dynamics
through direct or indirect interaction with the Arp2/3
complex, which is required to initiate actin
polymerization. They all contain at least one C-terminal
SH3 domain. Cortactin and HS1 bind Arp2/3 and actin
through an N-terminal region that contains an acidic
domain and several copies of a repeat domain found in
cortactin and HS1. Abp1 binds actin via an N-terminal
actin-depolymerizing factor (ADF) homology domain. Yeast
Abp1 binds Arp2/3 directly through two acidic domains.
Mammalian Abp1 does not directly interact with Arp2/3;
instead, it regulates actin dynamics indirectly by
interacting with dynamin and WASP family proteins. The
C-terminal region of these proteins acts as an adaptor
or scaffold that can connect membrane trafficking and
signaling proteins that bind the SH3 domain within the
actin network. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP motifs.
They play versatile and diverse roles in the cell
including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 54
Score = 33.4 bits (77), Expect = 0.005
Identities = 13/40 (32%), Positives = 23/40 (57%), Gaps = 1/40 (2%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGEVN-GTTGAFPMSYVQI 130
+++F + DI+ +ID W+ G G G FP +YV++
Sbjct: 15 EISFVEGDIITQIEQIDEGWWLGVNAKGQKGLFPANYVEL 54
Score = 26.5 bits (59), Expect = 1.7
Identities = 11/25 (44%), Positives = 14/25 (56%), Gaps = 1/25 (4%)
Query: 129 QIDNNWFYGEVN-GTTGAFPMSYVQ 152
QID W+ G G G FP +YV+
Sbjct: 29 QIDEGWWLGVNAKGQKGLFPANYVE 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 = 33.3 bits (76), Expect = 0.005
Identities = 18/41 (43%), Positives = 26/41 (63%), Gaps = 2/41 (4%)
Query: 92 DLNFKKDDIVILRRK--IDNNWFYGEVNGTTGAFPMSYVQI 130
+L K+ DIV L K ID W+ GE+NG G FP ++V++
Sbjct: 15 ELTIKEGDIVTLISKDCIDAGWWEGELNGRRGVFPDNFVKL 55
Score = 28.3 bits (63), Expect = 0.36
Identities = 11/25 (44%), Positives = 17/25 (68%)
Query: 130 IDNNWFYGEVNGTTGAFPMSYVQFV 154
ID W+ GE+NG G FP ++V+ +
Sbjct: 32 IDAGWWEGELNGRRGVFPDNFVKLL 56
>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 = 33.0 bits (76), Expect = 0.006
Identities = 13/39 (33%), Positives = 24/39 (61%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGEVNGTTGAFPMSYVQI 130
+L K DI+ +K++ W+ G +NG G FP ++V++
Sbjct: 15 ELTLKVGDIITNVKKMEEGWWEGTLNGKRGMFPDNFVKV 53
Score = 26.8 bits (60), Expect = 1.3
Identities = 8/24 (33%), Positives = 15/24 (62%)
Query: 128 VQIDNNWFYGEVNGTTGAFPMSYV 151
+++ W+ G +NG G FP ++V
Sbjct: 28 KKMEEGWWEGTLNGKRGMFPDNFV 51
>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 = 33.0 bits (75), Expect = 0.007
Identities = 12/39 (30%), Positives = 22/39 (56%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGEVNGTTGAFPMSYVQI 130
+L+FKK ++L + ++W+ G NG G P Y+ +
Sbjct: 15 ELSFKKGASLLLYHRASDDWWEGRHNGIDGLVPHQYIVV 53
>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 = 32.9 bits (75), Expect = 0.007
Identities = 13/39 (33%), Positives = 23/39 (58%), Gaps = 2/39 (5%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGEV--NGTTGAFPMSYV 128
DL F + D++ + D +W+ G++ NG G FP ++V
Sbjct: 15 DLGFLEGDLIEVLSIGDGSWWSGKLRRNGAEGIFPSNFV 53
>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 = 32.7 bits (75), Expect = 0.008
Identities = 12/39 (30%), Positives = 23/39 (58%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGEVNGTTGAFPMSYVQI 130
+L FK D++ + D +W++G + G FP S+V++
Sbjct: 15 ELGFKAGDVIEVLDMSDKDWWWGSIRDEEGWFPASFVRL 53
Score = 28.5 bits (64), Expect = 0.28
Identities = 8/22 (36%), Positives = 14/22 (63%)
Query: 131 DNNWFYGEVNGTTGAFPMSYVQ 152
D +W++G + G FP S+V+
Sbjct: 31 DKDWWWGSIRDEEGWFPASFVR 52
>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 = 32.7 bits (74), Expect = 0.009
Identities = 15/40 (37%), Positives = 23/40 (57%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGEVNGTTGAFPMSYVQID 131
+L FK +I+I+ D NW+ GE + G FP ++V D
Sbjct: 17 ELTFKHGEIIIVLDDSDANWWKGENHRGVGLFPSNFVTTD 56
>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 = 32.7 bits (75), Expect = 0.010
Identities = 12/35 (34%), Positives = 18/35 (51%), Gaps = 1/35 (2%)
Query: 97 KDDIVILRRKIDNNWFYGE-VNGTTGAFPMSYVQI 130
+ + I R+ + + W G G G FP SYV+I
Sbjct: 21 GEVLTITRQDVGDGWLEGRNSRGEVGLFPSSYVEI 55
Score = 25.4 bits (56), Expect = 3.6
Identities = 9/26 (34%), Positives = 12/26 (46%), Gaps = 1/26 (3%)
Query: 128 VQIDNNWFYGE-VNGTTGAFPMSYVQ 152
+ + W G G G FP SYV+
Sbjct: 29 QDVGDGWLEGRNSRGEVGLFPSSYVE 54
>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 = 32.6 bits (74), Expect = 0.011
Identities = 13/38 (34%), Positives = 21/38 (55%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGEVNGTTGAFPMSYVQ 129
+L DI+ +K D W+ GE+ G G FP ++V+
Sbjct: 15 ELTITVGDIITKIKKDDGGWWEGEIKGRRGLFPDNFVR 52
Score = 26.8 bits (59), Expect = 1.2
Identities = 9/22 (40%), Positives = 14/22 (63%)
Query: 131 DNNWFYGEVNGTTGAFPMSYVQ 152
D W+ GE+ G G FP ++V+
Sbjct: 31 DGGWWEGEIKGRRGLFPDNFVR 52
>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 = 32.3 bits (74), Expect = 0.012
Identities = 14/39 (35%), Positives = 23/39 (58%), Gaps = 2/39 (5%)
Query: 93 LNFKKDDIVILRRKIDNNWFYGE--VNGTTGAFPMSYVQ 129
L ++ D+V + RK+ + W+ GE +G G FP SY +
Sbjct: 16 LTLEEGDVVNVLRKMPDGWYEGERLRDGERGWFPSSYTE 54
Score = 25.4 bits (56), Expect = 4.0
Identities = 9/27 (33%), Positives = 15/27 (55%), Gaps = 2/27 (7%)
Query: 129 QIDNNWFYGE--VNGTTGAFPMSYVQF 153
++ + W+ GE +G G FP SY +
Sbjct: 29 KMPDGWYEGERLRDGERGWFPSSYTEE 55
>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 = 32.4 bits (74), Expect = 0.012
Identities = 14/40 (35%), Positives = 24/40 (60%), Gaps = 1/40 (2%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGEV-NGTTGAFPMSYVQI 130
+++F DI+ +ID W+ G +GT G FP +YV++
Sbjct: 15 EISFDPGDIITDIEQIDEGWWRGTGPDGTYGLFPANYVEL 54
Score = 27.0 bits (60), Expect = 1.1
Identities = 12/25 (48%), Positives = 16/25 (64%), Gaps = 1/25 (4%)
Query: 129 QIDNNWFYGEV-NGTTGAFPMSYVQ 152
QID W+ G +GT G FP +YV+
Sbjct: 29 QIDEGWWRGTGPDGTYGLFPANYVE 53
>gnl|CDD|212761 cd11827, SH3_MyoIe_If_like, Src homology 3 domain of Myosins Ie,
If, and similar proteins. Myosins Ie (MyoIe) and If
(MyoIf) are nonmuscle, unconventional, long tailed,
class I myosins containing an N-terminal motor domain
and a myosin tail with TH1, TH2, and SH3 domains. MyoIe
interacts with the endocytic proteins, dynamin and
synaptojanin-1, through its SH3 domain; it may play a
role in clathrin-dependent endocytosis. In the kidney,
MyoIe is critical for podocyte function and normal
glomerular filtration. Mutations in MyoIe is associated
with focal segmental glomerulosclerosis, a disease
characterized by massive proteinuria and progression to
end-stage kidney disease. MyoIf is predominantly
expressed in the immune system; it plays a role in
immune cell motility and innate immunity. Mutations in
MyoIf may be associated with the loss of hearing. The
MyoIf gene has also been found to be fused to the MLL
(Mixed lineage leukemia) gene in infant acute myeloid
leukemias (AML). SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP motifs.
They play versatile and diverse roles in the cell
including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 53
Score = 32.0 bits (73), Expect = 0.014
Identities = 12/38 (31%), Positives = 24/38 (63%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGEVNGTTGAFPMSYVQ 129
+L+F + DI+ + ++ + W+ G + G G FP +YV+
Sbjct: 15 ELSFNEGDIIEILKEDPSGWWTGRLRGKEGLFPGNYVE 52
Score = 25.1 bits (55), Expect = 4.9
Identities = 8/19 (42%), Positives = 12/19 (63%)
Query: 134 WFYGEVNGTTGAFPMSYVQ 152
W+ G + G G FP +YV+
Sbjct: 34 WWTGRLRGKEGLFPGNYVE 52
>gnl|CDD|212763 cd11829, SH3_GAS7, Src homology 3 domain of Growth Arrest Specific
protein 7. GAS7 is mainly expressed in the brain and is
required for neurite outgrowth. It may also play a role
in the protection and migration of embryonic stem cells.
Treatment-related acute myeloid leukemia (AML) has been
reported resulting from mixed-lineage leukemia
(MLL)-GAS7 translocations as a complication of primary
cancer treatment. GAS7 contains an N-terminal SH3
domain, followed by a WW domain, and a central F-BAR
domain. SH3 domains are protein interaction domains that
bind to proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 52
Score = 32.1 bits (73), Expect = 0.014
Identities = 13/36 (36%), Positives = 22/36 (61%)
Query: 93 LNFKKDDIVILRRKIDNNWFYGEVNGTTGAFPMSYV 128
L+F+ +++ + + D W+ GE +G G FP SYV
Sbjct: 17 LSFEAGELIRVLQAPDGGWWEGEKDGLRGWFPASYV 52
Score = 27.5 bits (61), Expect = 0.60
Identities = 11/21 (52%), Positives = 13/21 (61%)
Query: 131 DNNWFYGEVNGTTGAFPMSYV 151
D W+ GE +G G FP SYV
Sbjct: 32 DGGWWEGEKDGLRGWFPASYV 52
>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 = 31.9 bits (72), Expect = 0.017
Identities = 13/38 (34%), Positives = 23/38 (60%), Gaps = 1/38 (2%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGEVNGTTGAFPMSYVQ 129
DL F + + +++ +K D W+ G + TG FP +YV+
Sbjct: 15 DLTFNEGEEILVTQK-DGEWWTGSIEDRTGIFPSNYVR 51
Score = 27.3 bits (60), Expect = 0.88
Identities = 10/24 (41%), Positives = 14/24 (58%)
Query: 129 QIDNNWFYGEVNGTTGAFPMSYVQ 152
Q D W+ G + TG FP +YV+
Sbjct: 28 QKDGEWWTGSIEDRTGIFPSNYVR 51
>gnl|CDD|227561 COG5236, COG5236, Uncharacterized conserved protein, contains RING
Zn-finger [General function prediction only].
Length = 493
Score = 34.6 bits (79), Expect = 0.017
Identities = 12/42 (28%), Positives = 18/42 (42%), Gaps = 1/42 (2%)
Query: 12 CSVCLDRLDTSSKVLPCQHTFCKKCLEEIVSSHKELRCPECR 53
C +C S+ PC H C C + + + + CP CR
Sbjct: 64 CQICAGSTTYSA-RYPCGHQICHACAVRLRALYMQKGCPLCR 104
>gnl|CDD|212847 cd11914, SH3_BAIAP2L2, Src Homology 3 domain of Brain-specific
Angiogenesis Inhibitor 1-Associated Protein 2-Like 2.
BAIAP2L2 co-localizes with clathrin plaques but its
function has not been determined. It contains an
N-terminal IMD or Inverse-Bin/Amphiphysin/Rvs (I-BAR)
domain, an SH3 domain, and a WASP homology 2 (WH2)
actin-binding motif at the C-terminus. The related
proteins, BAIAP2L1 and IRSp53, function as regulators of
membrane dynamics and the actin cytoskeleton. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 59
Score = 32.1 bits (73), Expect = 0.019
Identities = 15/40 (37%), Positives = 23/40 (57%), Gaps = 3/40 (7%)
Query: 93 LNFKKDDIV-ILRRKIDNNWFYGEVNG--TTGAFPMSYVQ 129
L F + DI+ +L + N W YG++ G G FP +YV+
Sbjct: 18 LRFNRGDIITVLVPEARNGWLYGKLEGSSRQGWFPEAYVK 57
>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 = 31.5 bits (71), Expect = 0.024
Identities = 14/41 (34%), Positives = 25/41 (60%), Gaps = 3/41 (7%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGEVNGT---TGAFPMSYVQ 129
+L F + +I+I+ + D W+ G ++G GAFP+S+V
Sbjct: 15 ELTFSEGEIIIVDGEEDKEWWIGHIDGEPTRRGAFPVSFVH 55
>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 = 31.6 bits (71), Expect = 0.029
Identities = 11/39 (28%), Positives = 25/39 (64%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGEVNGTTGAFPMSYVQI 130
+L FK D++ + + +W++G+++ G FP S+V++
Sbjct: 20 ELAFKAGDVIKVLDASNKDWWWGQIDDEEGWFPASFVRL 58
Score = 25.1 bits (54), Expect = 5.6
Identities = 7/23 (30%), Positives = 16/23 (69%)
Query: 131 DNNWFYGEVNGTTGAFPMSYVQF 153
+ +W++G+++ G FP S+V+
Sbjct: 36 NKDWWWGQIDDEEGWFPASFVRL 58
>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 = 30.8 bits (70), Expect = 0.040
Identities = 14/37 (37%), Positives = 22/37 (59%), Gaps = 4/37 (10%)
Query: 92 DLNFKKDDIVILRRK----IDNNWFYGEVNGTTGAFP 124
+L+F + I+ + RK +D+ W+ GE NG G FP
Sbjct: 15 ELSFPEGAIIRILRKDDNGVDDGWWEGEFNGRVGVFP 51
Score = 28.9 bits (65), Expect = 0.25
Identities = 9/19 (47%), Positives = 12/19 (63%)
Query: 129 QIDNNWFYGEVNGTTGAFP 147
+D+ W+ GE NG G FP
Sbjct: 33 GVDDGWWEGEFNGRVGVFP 51
>gnl|CDD|227547 COG5222, COG5222, Uncharacterized conserved protein, contains RING
Zn-finger [General function prediction only].
Length = 427
Score = 33.2 bits (75), Expect = 0.044
Identities = 16/47 (34%), Positives = 23/47 (48%), Gaps = 3/47 (6%)
Query: 7 NDLLECSVCLDRLDTSSKVLPCQHTFCKKCLEE-IVSSHKELRCPEC 52
N L+C +C L K C HTFC +C+ ++ S + CP C
Sbjct: 272 NISLKCPLCHCLLRNPMKTPCCGHTFCDECIGTALLDSDFK--CPNC 316
>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 = 30.5 bits (69), Expect = 0.052
Identities = 13/39 (33%), Positives = 23/39 (58%), Gaps = 1/39 (2%)
Query: 92 DLNFKKDDIVI-LRRKIDNNWFYGEVNGTTGAFPMSYVQ 129
+L+FK DI+ L + + W G ++G G +P +YV+
Sbjct: 15 ELSFKAGDILTKLEEEDEQGWCKGRLDGRVGLYPANYVE 53
Score = 25.8 bits (57), Expect = 3.1
Identities = 7/22 (31%), Positives = 13/22 (59%)
Query: 131 DNNWFYGEVNGTTGAFPMSYVQ 152
+ W G ++G G +P +YV+
Sbjct: 32 EQGWCKGRLDGRVGLYPANYVE 53
>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 = 30.3 bits (68), Expect = 0.056
Identities = 12/38 (31%), Positives = 24/38 (63%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGEVNGTTGAFPMSYVQ 129
+L K DI+ + +++ W+ G +NG TG FP ++++
Sbjct: 15 ELELKVGDIIEVVGEVEEGWWEGVLNGKTGMFPSNFIK 52
Score = 26.9 bits (59), Expect = 1.2
Identities = 8/24 (33%), Positives = 17/24 (70%)
Query: 129 QIDNNWFYGEVNGTTGAFPMSYVQ 152
+++ W+ G +NG TG FP ++++
Sbjct: 29 EVEEGWWEGVLNGKTGMFPSNFIK 52
>gnl|CDD|212834 cd11901, SH3_Nck1_2, Second Src Homology 3 domain of Nck1 adaptor
protein. Nck1 (also called Nckalpha) plays a crucial
role in connecting signaling pathways of tyrosine kinase
receptors and important effectors in actin dynamics and
cytoskeletal remodeling. It binds and activates RasGAP,
resulting in the downregulation of Ras. It is also
involved in the signaling of endothilin-mediated
inhibition of cell migration. Nck adaptor proteins
regulate actin cytoskeleton dynamics by linking
proline-rich effector molecules to protein tyrosine
kinases and phosphorylated signaling intermediates. They
contain three SH3 domains and a C-terminal SH2 domain.
They function downstream of the PDGFbeta receptor and
are involved in Rho GTPase signaling and actin dynamics.
Vertebrates contain two Nck adaptor proteins: Nck1 (also
called Nckalpha) and Nck2, which show partly overlapping
functions but also bind distinct targets. The second SH3
domain of Nck appears to prefer ligands containing the
APxxPxR motif. SH3 domains are protein interaction
domains that usually bind to proline-rich ligands with
moderate affinity and selectivity, preferentially a PxxP
motif. They play versatile and diverse roles in the cell
including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 55
Score = 30.4 bits (68), Expect = 0.057
Identities = 14/37 (37%), Positives = 20/37 (54%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGEVNGTTGAFPMSYV 128
+L+ K VI+ K + W+ G NG G FP +YV
Sbjct: 17 ELSLVKGTKVIVMEKCSDGWWRGSYNGQVGWFPSNYV 53
Score = 25.0 bits (54), Expect = 5.5
Identities = 9/20 (45%), Positives = 12/20 (60%)
Query: 132 NNWFYGEVNGTTGAFPMSYV 151
+ W+ G NG G FP +YV
Sbjct: 34 DGWWRGSYNGQVGWFPSNYV 53
>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 = 30.5 bits (69), Expect = 0.058
Identities = 12/39 (30%), Positives = 22/39 (56%), Gaps = 2/39 (5%)
Query: 93 LNFKKDDIV-ILRRKIDNNWFYGEVNGTTGAFPMSYVQI 130
L + D+V + + + W GE+NG G FP ++V++
Sbjct: 20 LALEVGDLVKVTKINVSGQW-EGELNGKVGHFPFTHVEL 57
Score = 26.7 bits (59), Expect = 1.4
Identities = 8/17 (47%), Positives = 12/17 (70%)
Query: 137 GEVNGTTGAFPMSYVQF 153
GE+NG G FP ++V+
Sbjct: 41 GELNGKVGHFPFTHVEL 57
>gnl|CDD|213006 cd12073, SH3_HS1, Src homology 3 domain of Hematopoietic lineage
cell-specific protein 1. HS1, also called HCLS1
(hematopoietic cell-specific Lyn substrate 1), is a
cortactin homolog expressed specifically in
hematopoietic cells. It is an actin regulatory protein
that binds the Arp2/3 complex and stabilizes branched
actin filaments. It is required for cell spreading and
signaling in lymphocytes. It regulates cytoskeletal
remodeling that controls lymphocyte trafficking, and it
also affects tissue invasion and infiltration of
leukemic B cells. Like cortactin, HS1 contains an
N-terminal acidic domain, several copies of a repeat
domain found in cortactin and HS1, a proline-rich
region, and a C-terminal SH3 domain. The N-terminal
region binds the Arp2/3 complex and F-actin, while the
C-terminal region acts as an adaptor or scaffold that
can connect varied proteins that bind the SH3 domain
within the actin network. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 55
Score = 30.6 bits (69), Expect = 0.060
Identities = 10/39 (25%), Positives = 21/39 (53%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGEVNGTTGAFPMSYVQI 130
+++F + + +D W+ G +G G FP +YV++
Sbjct: 16 EISFDPQETITDIEMVDEGWWKGTCHGHRGLFPANYVEL 54
Score = 26.3 bits (58), Expect = 1.6
Identities = 9/24 (37%), Positives = 14/24 (58%)
Query: 130 IDNNWFYGEVNGTTGAFPMSYVQF 153
+D W+ G +G G FP +YV+
Sbjct: 31 VDEGWWKGTCHGHRGLFPANYVEL 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 = 30.8 bits (69), Expect = 0.061
Identities = 12/39 (30%), Positives = 23/39 (58%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGEVNGTTGAFPMSYVQI 130
+L FK D++ + + W++G V + G FP S+V++
Sbjct: 33 ELGFKAGDVIEVMDATNKEWWWGRVLDSEGWFPASFVRL 71
>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 = 30.0 bits (68), Expect = 0.083
Identities = 11/39 (28%), Positives = 23/39 (58%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGEVNGTTGAFPMSYVQI 130
+L K D + + +++ W+ G++NG G FP ++V+
Sbjct: 15 ELELKVGDTIEVLGEVEEGWWEGKLNGKVGVFPSNFVKE 53
Score = 28.1 bits (63), Expect = 0.41
Identities = 8/24 (33%), Positives = 17/24 (70%)
Query: 129 QIDNNWFYGEVNGTTGAFPMSYVQ 152
+++ W+ G++NG G FP ++V+
Sbjct: 29 EVEEGWWEGKLNGKVGVFPSNFVK 52
>gnl|CDD|212835 cd11902, SH3_Nck2_2, Second Src Homology 3 domain of Nck2 adaptor
protein. Nck2 (also called Nckbeta or Growth factor
receptor-bound protein 4, Grb4) plays a crucial role in
connecting signaling pathways of tyrosine kinase
receptors and important effectors in actin dynamics and
cytoskeletal remodeling. It binds neuronal signaling
proteins such as ephrinB and Disabled-1 (Dab-1)
exclusively. Nck adaptor proteins regulate actin
cytoskeleton dynamics by linking proline-rich effector
molecules to protein tyrosine kinases and phosphorylated
signaling intermediates. They contain three SH3 domains
and a C-terminal SH2 domain. They function downstream of
the PDGFbeta receptor and are involved in Rho GTPase
signaling and actin dynamics. Vertebrates contain two
Nck adaptor proteins: Nck1 (also called Nckalpha) and
Nck2, which show partly overlapping functions but also
bind distinct targets. The second SH3 domain of Nck
appears to prefer ligands containing the APxxPxR motif.
SH3 domains are protein interaction domains that usually
bind to proline-rich ligands with moderate affinity and
selectivity, preferentially a PxxP motif. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 55
Score = 29.6 bits (66), Expect = 0.11
Identities = 16/51 (31%), Positives = 22/51 (43%)
Query: 78 PLVVSFIRFFLNILDLNFKKDDIVILRRKIDNNWFYGEVNGTTGAFPMSYV 128
P V F +L+ K V + K + W+ G NG G FP +YV
Sbjct: 2 PAFVKFAYVAEREDELSLVKGSRVTVMEKCSDGWWRGSYNGQIGWFPSNYV 52
>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 = 30.0 bits (67), Expect = 0.12
Identities = 15/41 (36%), Positives = 22/41 (53%), Gaps = 2/41 (4%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGEVNGTT--GAFPMSYVQI 130
+L + DIV + K D+ WF G T G FP +YV++
Sbjct: 17 ELELRDGDIVDVMEKCDDGWFVGTSRRTKQFGTFPGNYVKL 57
>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 = 29.6 bits (66), Expect = 0.12
Identities = 12/38 (31%), Positives = 24/38 (63%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGEVNGTTGAFPMSYVQ 129
+L K DI+ + +++ W+ G +NG +G FP ++V+
Sbjct: 16 ELELKVGDIIDINEEVEEGWWSGTLNGKSGLFPSNFVK 53
Score = 25.3 bits (55), Expect = 4.6
Identities = 8/24 (33%), Positives = 17/24 (70%)
Query: 129 QIDNNWFYGEVNGTTGAFPMSYVQ 152
+++ W+ G +NG +G FP ++V+
Sbjct: 30 EVEEGWWSGTLNGKSGLFPSNFVK 53
>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 = 29.5 bits (66), Expect = 0.14
Identities = 12/39 (30%), Positives = 20/39 (51%), Gaps = 2/39 (5%)
Query: 93 LNFKKDDIVILR--RKIDNNWFYGEVNGTTGAFPMSYVQ 129
L+F + D++ L ++ W +G G +G FP VQ
Sbjct: 16 LSFHRGDLIKLLPMAGLEPGWQFGSTGGRSGLFPADIVQ 54
>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 = 29.6 bits (67), Expect = 0.14
Identities = 16/40 (40%), Positives = 22/40 (55%), Gaps = 2/40 (5%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYG--EVNGTTGAFPMSYVQ 129
+L ++ DIV + K D+ WF G E G G FP +YV
Sbjct: 15 ELELREGDIVYVMEKCDDGWFVGTSERTGLFGTFPGNYVA 54
>gnl|CDD|227544 COG5219, COG5219, Uncharacterized conserved protein, contains RING
Zn-finger [General function prediction only].
Length = 1525
Score = 31.9 bits (72), Expect = 0.14
Identities = 16/50 (32%), Positives = 24/50 (48%), Gaps = 6/50 (12%)
Query: 11 ECSVCLDRLDTSSKVLP------CQHTFCKKCLEEIVSSHKELRCPECRV 54
EC++C LD + LP C++ F +CL + +S CP CR
Sbjct: 1471 ECAICYSVLDMVDRSLPSKRCATCKNKFHTRCLYKWFASSARSNCPLCRS 1520
>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 = 29.6 bits (66), Expect = 0.15
Identities = 13/42 (30%), Positives = 24/42 (57%), Gaps = 3/42 (7%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGEVNG---TTGAFPMSYVQI 130
+L F + +++I+ + D W+ G + G G FP+S+V I
Sbjct: 15 ELTFVEGEVIIVTGEEDQEWWIGHIEGQPERKGVFPVSFVHI 56
>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 = 29.3 bits (66), Expect = 0.15
Identities = 14/39 (35%), Positives = 26/39 (66%), Gaps = 2/39 (5%)
Query: 92 DLNFKKDDIV-ILRRKIDN-NWFYGEVNGTTGAFPMSYV 128
+L+FK+ D++ I+ ++ D+ W+ GE+NG G P Y+
Sbjct: 15 ELSFKRGDLIYIISKEYDSFGWWVGELNGKVGLVPKDYL 53
>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 = 29.2 bits (66), Expect = 0.16
Identities = 12/43 (27%), Positives = 23/43 (53%), Gaps = 5/43 (11%)
Query: 93 LNFKKDDIVILRRKIDNNWFYGEVNGT-----TGAFPMSYVQI 130
L+ +V++R+K + W+ GE+ G FP +YV++
Sbjct: 16 LSLAVGQLVLVRKKSPSGWWEGELQARGKKRQIGWFPANYVKL 58
>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 = 29.2 bits (66), Expect = 0.16
Identities = 12/40 (30%), Positives = 22/40 (55%), Gaps = 1/40 (2%)
Query: 92 DLNFKKDDIVI-LRRKIDNNWFYGEVNGTTGAFPMSYVQI 130
+L+F+ I+ ++ + W G +NG TG P +YV+
Sbjct: 15 ELSFEPGQIITNVQPSDEPGWLEGTLNGRTGLIPENYVEF 54
Score = 29.2 bits (66), Expect = 0.18
Identities = 10/20 (50%), Positives = 13/20 (65%)
Query: 134 WFYGEVNGTTGAFPMSYVQF 153
W G +NG TG P +YV+F
Sbjct: 35 WLEGTLNGRTGLIPENYVEF 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 = 29.0 bits (65), Expect = 0.16
Identities = 11/30 (36%), Positives = 17/30 (56%)
Query: 99 DIVILRRKIDNNWFYGEVNGTTGAFPMSYV 128
D++ + + +D W G G TG FP S+V
Sbjct: 22 DVIEVLKVVDEFWLLGTKEGVTGQFPSSFV 51
Score = 27.5 bits (61), Expect = 0.58
Identities = 10/22 (45%), Positives = 12/22 (54%)
Query: 130 IDNNWFYGEVNGTTGAFPMSYV 151
+D W G G TG FP S+V
Sbjct: 30 VDEFWLLGTKEGVTGQFPSSFV 51
>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 = 29.2 bits (65), Expect = 0.17
Identities = 13/36 (36%), Positives = 20/36 (55%), Gaps = 1/36 (2%)
Query: 96 KKDDIVILRRKIDNNWFYGE-VNGTTGAFPMSYVQI 130
+ +++VI + W G+ G TG FP SYV+I
Sbjct: 20 ENEELVIFSENSLDGWLQGQNSRGETGLFPASYVEI 55
>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 = 29.1 bits (65), Expect = 0.18
Identities = 14/39 (35%), Positives = 25/39 (64%), Gaps = 2/39 (5%)
Query: 92 DLNFKKDDIV-ILRRKIDN-NWFYGEVNGTTGAFPMSYV 128
+L+FK+ D + IL ++ + W+ GE+ GT G P +Y+
Sbjct: 15 ELSFKRGDTIYILSKEYNRFGWWVGEMKGTIGLVPKAYI 53
>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 = 29.0 bits (65), Expect = 0.18
Identities = 12/39 (30%), Positives = 23/39 (58%), Gaps = 1/39 (2%)
Query: 92 DLNFKKDDIVILRRKI-DNNWFYGEVNGTTGAFPMSYVQ 129
+L + +I+ +K+ + W GE+NG G FP ++V+
Sbjct: 15 ELTIRVGEIIRNVKKLEEEGWLEGELNGRRGMFPDNFVK 53
Score = 27.5 bits (61), Expect = 0.79
Identities = 9/24 (37%), Positives = 15/24 (62%)
Query: 131 DNNWFYGEVNGTTGAFPMSYVQFV 154
+ W GE+NG G FP ++V+ +
Sbjct: 32 EEGWLEGELNGRRGMFPDNFVKEI 55
>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 = 29.2 bits (66), Expect = 0.19
Identities = 13/42 (30%), Positives = 25/42 (59%), Gaps = 3/42 (7%)
Query: 92 DLNFKKDDI--VILRRKIDNNWFYGE-VNGTTGAFPMSYVQI 130
+L+F+K + +I + + D +W+ GTTG P +YV++
Sbjct: 15 ELSFEKGERLEIIEKPEDDPDWWKARNALGTTGLVPRNYVEV 56
>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 = 29.0 bits (65), Expect = 0.21
Identities = 13/43 (30%), Positives = 24/43 (55%), Gaps = 3/43 (6%)
Query: 89 NILDLNFKKDDIVILRRKIDNNWFYGE-VNGTTGAFPMSYVQI 130
N ++L + +IV +D +W+ G G +G FP +YV++
Sbjct: 14 NEIEL--VEGEIVTNIEMVDEDWWMGTNSKGESGLFPSNYVEL 54
Score = 25.9 bits (57), Expect = 2.6
Identities = 11/40 (27%), Positives = 19/40 (47%), Gaps = 1/40 (2%)
Query: 114 GEVNGTTGAFPMSYVQIDNNWFYGE-VNGTTGAFPMSYVQ 152
E+ G + +D +W+ G G +G FP +YV+
Sbjct: 14 NEIELVEGEIVTNIEMVDEDWWMGTNSKGESGLFPSNYVE 53
>gnl|CDD|212997 cd12064, SH3_GRAF, Src Homology 3 domain of GTPase Regulator
Associated with Focal adhesion kinase. GRAF, also
called Rho GTPase activating protein 26 (ARHGAP26),
Oligophrenin-1-like (OPHN1L) or GRAF1, is a GAP with
activity towards RhoA and Cdc42 and is only weakly
active towards Rac1. It influences Rho-mediated
cytoskeletal rearrangements and binds focal adhesion
kinase (FAK), which is a critical component of integrin
signaling. It is essential for the major
clathrin-independent endocytic pathway mediated by
pleiomorphic membranes. GRAF contains an N-terminal BAR
domain, followed by a Pleckstrin homology (PH) domain, a
Rho GAP domain, and a C-terminal SH3 domain. The SH3
domain of GRAF binds PKNbeta, a target of the small
GTPase Rho. SH3 domains bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs; they play a role in the regulation of
enzymes by intramolecular interactions, changing the
subcellular localization of signal pathway components
and mediate multiprotein complex assemblies.
Length = 56
Score = 28.9 bits (64), Expect = 0.22
Identities = 10/21 (47%), Positives = 14/21 (66%)
Query: 134 WFYGEVNGTTGAFPMSYVQFV 154
W G +NG TG P +YV+F+
Sbjct: 36 WLEGTLNGKTGLIPENYVEFL 56
Score = 26.2 bits (57), Expect = 2.5
Identities = 9/19 (47%), Positives = 12/19 (63%)
Query: 111 WFYGEVNGTTGAFPMSYVQ 129
W G +NG TG P +YV+
Sbjct: 36 WLEGTLNGKTGLIPENYVE 54
>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 = 29.2 bits (65), Expect = 0.23
Identities = 13/40 (32%), Positives = 22/40 (55%), Gaps = 2/40 (5%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGEVNGTT--GAFPMSYVQ 129
+L ++ D++ + K D+ WF G T G FP +YV+
Sbjct: 20 ELELREGDVIDVMEKCDDGWFVGTSRRTKFFGTFPGNYVK 59
>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 = 28.5 bits (64), Expect = 0.26
Identities = 14/39 (35%), Positives = 23/39 (58%), Gaps = 2/39 (5%)
Query: 93 LNFKKDDIVILRRKIDNNWFYGEVNGTT--GAFPMSYVQ 129
L+ KKDDIV + +K DN W+ + + G P +Y++
Sbjct: 16 LSLKKDDIVYIVQKEDNGWWLAKKLDESKEGWVPAAYLE 54
>gnl|CDD|212871 cd11938, SH3_ARHGEF16_26, Src homology 3 domain of the Rho guanine
nucleotide exchange factors ARHGEF16 and ARHGEF26.
ARHGEF16, also called ephexin-4, acts as a GEF for RhoG,
activating it by exchanging bound GDP for free GTP. RhoG
is a small GTPase that is a crucial regulator of Rac in
migrating cells. ARHGEF16 interacts directly with the
ephrin receptor EphA2 and mediates cell migration and
invasion in breast cancer cells by activating RhoG.
ARHGEF26, also called SGEF (SH3 domain-containing
guanine exchange factor), also activates RhoG. It is
highly expressed in liver and may play a role in
regulating membrane dynamics. ARHGEF16 and ARHGEF26
contain RhoGEF (also called Dbl-homologous or DH),
Pleckstrin Homology (PH), and SH3 domains. The SH3
domains of ARHGEFs play an autoinhibitory role through
intramolecular interactions with a proline-rich region
N-terminal to the DH domain. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 55
Score = 28.7 bits (64), Expect = 0.27
Identities = 12/37 (32%), Positives = 23/37 (62%), Gaps = 2/37 (5%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGE--VNGTTGAFPMS 126
+L+ ++ D+V++ + + W+YGE +G G FP S
Sbjct: 15 ELSLQQADVVLVLQTESDGWYYGERLRDGERGWFPSS 51
>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 = 28.4 bits (64), Expect = 0.32
Identities = 13/37 (35%), Positives = 22/37 (59%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGEVNGTTGAFPMSYV 128
+L+F++ D++ + K D NW+ G TG P +YV
Sbjct: 15 ELSFEEGDLLYISDKSDPNWWKATCGGKTGLIPSNYV 51
>gnl|CDD|212826 cd11893, SH3_MIA3, Src Homology 3 domain of Melanoma Inhibitory
Activity 3 protein. MIA3, also called TANGO or TANGO1,
acts as a tumor suppressor of malignant melanoma. It is
downregulated or lost in melanoma cells lines. Unlike
other MIA family members, MIA3 is widely expressed
except in hematopoietic cells. MIA3 is an ER resident
transmembrane protein that is required for the loading
of collagen VII into transport vesicles. SNPs in the
MIA3 gene have been associated with coronary arterial
disease and myocardial infarction. MIA3 contains an
N-terminal SH3-like domain, similar to MIA. It is a
member of the recently identified family that also
includes MIA, MIAL, and MIA2. MIA is a single domain
protein that adopts a SH3 domain-like fold; it contains
an additional antiparallel beta sheet and two disulfide
bonds compared to classical SH3 domains. Unlike
classical SH3 domains, MIA does not bind proline-rich
ligands.
Length = 73
Score = 29.0 bits (65), Expect = 0.32
Identities = 10/45 (22%), Positives = 21/45 (46%), Gaps = 3/45 (6%)
Query: 93 LNFKKDDIVILRRKIDNNW---FYGEVNGTTGAFPMSYVQIDNNW 134
L+FKK + + + K+ + G V G FP + +++ +
Sbjct: 28 LSFKKGETIYVYYKLSGRRTDLWAGSVGFDFGYFPKDLLDVNHLY 72
>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 = 28.3 bits (63), Expect = 0.35
Identities = 13/40 (32%), Positives = 21/40 (52%), Gaps = 2/40 (5%)
Query: 92 DLNFKKDDIVILRRKI--DNNWFYGEVNGTTGAFPMSYVQ 129
+++F DI+ + K + W YG G G FP +YV+
Sbjct: 17 EMSFNAGDIIQVDEKTVGEPGWLYGSFQGNFGWFPCNYVE 56
Score = 27.9 bits (62), Expect = 0.59
Identities = 11/32 (34%), Positives = 15/32 (46%), Gaps = 6/32 (18%)
Query: 127 YVQIDNN------WFYGEVNGTTGAFPMSYVQ 152
+Q+D W YG G G FP +YV+
Sbjct: 25 IIQVDEKTVGEPGWLYGSFQGNFGWFPCNYVE 56
>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 = 29.0 bits (65), Expect = 0.37
Identities = 10/26 (38%), Positives = 14/26 (53%)
Query: 104 RRKIDNNWFYGEVNGTTGAFPMSYVQ 129
R D W +G ++G +G FP VQ
Sbjct: 54 RGTPDFGWKFGAIHGRSGVFPAELVQ 79
Score = 27.5 bits (61), Expect = 1.3
Identities = 9/22 (40%), Positives = 13/22 (59%)
Query: 131 DNNWFYGEVNGTTGAFPMSYVQ 152
D W +G ++G +G FP VQ
Sbjct: 58 DFGWKFGAIHGRSGVFPAELVQ 79
>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 = 28.2 bits (63), Expect = 0.37
Identities = 11/28 (39%), Positives = 15/28 (53%)
Query: 126 SYVQIDNNWFYGEVNGTTGAFPMSYVQF 153
S V D W+ G++N G FP +YV
Sbjct: 31 SAVSGDEGWWTGKINDRVGIFPSNYVTS 58
Score = 27.0 bits (60), Expect = 1.0
Identities = 9/21 (42%), Positives = 13/21 (61%)
Query: 108 DNNWFYGEVNGTTGAFPMSYV 128
D W+ G++N G FP +YV
Sbjct: 36 DEGWWTGKINDRVGIFPSNYV 56
>gnl|CDD|226843 COG4416, Com, Mu-like prophage protein Com [General function
prediction only].
Length = 60
Score = 28.4 bits (63), Expect = 0.43
Identities = 10/36 (27%), Positives = 16/36 (44%), Gaps = 1/36 (2%)
Query: 31 TFCKKCLEEI-VSSHKELRCPECRVLVECKVDELPP 65
C K L E ++ E +CP C+ + E + E
Sbjct: 8 AKCNKLLAEAEGQAYLEKKCPRCKEVNEFYIKEEAT 43
>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 = 27.7 bits (62), Expect = 0.50
Identities = 12/42 (28%), Positives = 22/42 (52%)
Query: 89 NILDLNFKKDDIVILRRKIDNNWFYGEVNGTTGAFPMSYVQI 130
+L+ K D+V + K ++ W+ E NG G P +Y++
Sbjct: 12 EDDELSISKGDVVAVIEKGEDGWWTVERNGQKGLVPGTYLEK 53
>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 = 27.6 bits (61), Expect = 0.61
Identities = 13/39 (33%), Positives = 21/39 (53%), Gaps = 2/39 (5%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGEVNGTT--GAFPMSYV 128
+L ++ D V + ++ D+ WF G T G FP +YV
Sbjct: 17 ELELREGDRVDVMQQCDDGWFVGVSRRTQKFGTFPGNYV 55
>gnl|CDD|237024 PRK11922, PRK11922, RNA polymerase sigma factor; Provisional.
Length = 231
Score = 29.5 bits (67), Expect = 0.67
Identities = 11/29 (37%), Positives = 17/29 (58%), Gaps = 3/29 (10%)
Query: 51 ECRVLVECKVDELPPN---VLLMRILEGL 76
E R L+E +D LP V ++R++E L
Sbjct: 138 EIRALLERAIDALPDAFRAVFVLRVVEEL 166
>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 = 27.7 bits (62), Expect = 0.68
Identities = 13/39 (33%), Positives = 26/39 (66%), Gaps = 1/39 (2%)
Query: 92 DLNFKKDDIVILRRKIDNNWFY-GEVNGTTGAFPMSYVQ 129
+L+F+ DI+ + ++D + FY GE+NG G P ++++
Sbjct: 22 ELSFRAGDIITVFGEMDEDGFYYGELNGQRGLVPSNFLE 60
>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 = 27.6 bits (62), Expect = 0.68
Identities = 9/35 (25%), Positives = 18/35 (51%)
Query: 93 LNFKKDDIVILRRKIDNNWFYGEVNGTTGAFPMSY 127
++ ++ ++V + K D+ W+Y G P SY
Sbjct: 16 ISLQEGEVVEVLEKNDSGWWYVRKGDKEGWVPASY 50
>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 = 27.5 bits (61), Expect = 0.69
Identities = 11/38 (28%), Positives = 20/38 (52%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGEVNGTTGAFPMSYVQ 129
DL + D + L + +W+ G++ G FP ++VQ
Sbjct: 15 DLEMRPGDKITLLDDSNEDWWKGKIEDRVGFFPANFVQ 52
>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 = 27.5 bits (61), Expect = 0.77
Identities = 13/39 (33%), Positives = 23/39 (58%), Gaps = 2/39 (5%)
Query: 92 DLNFKKDDIVILRRKIDN--NWFYGEVNGTTGAFPMSYV 128
+L+F++ D++ + K N W+ GE+NG G P Y+
Sbjct: 15 ELSFQRGDLIYILSKEYNMYGWWVGELNGIVGIVPKDYL 53
>gnl|CDD|212846 cd11913, SH3_BAIAP2L1, Src Homology 3 domain of Brain-specific
Angiogenesis Inhibitor 1-Associated Protein 2-Like 1,
also called Insulin Receptor Tyrosine Kinase Substrate
(IRTKS). BAIAP2L1 or IRTKS is widely expressed, serves
as a substrate for the insulin receptor, and binds the
small GTPase Rac. It plays a role in regulating the
actin cytoskeleton and colocalizes with F-actin,
cortactin, VASP, and vinculin. BAIAP2L1 expression leads
to the formation of short actin bundles, distinct from
filopodia-like protrusions induced by the expression of
the related protein IRSp53. IRTKS mediates the
recruitment of effector proteins Tir and EspFu, which
regulate host cell actin reorganization, to bacterial
attachment sites. It contains an N-terminal IMD or
Inverse-Bin/Amphiphysin/Rvs (I-BAR) domain, an SH3
domain, and a WASP homology 2 (WH2) actin-binding motif
at the C-terminus. The SH3 domain of IRTKS has been
shown to bind the proline-rich C-terminus of EspFu. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 58
Score = 27.6 bits (61), Expect = 0.78
Identities = 13/40 (32%), Positives = 20/40 (50%), Gaps = 3/40 (7%)
Query: 93 LNFKKDDIVILR-RKIDNNWFYGE--VNGTTGAFPMSYVQ 129
L+F + D++ L + + W YGE G FP SY +
Sbjct: 18 LSFAQGDVITLLIPEEKDGWLYGEHDTTKARGWFPSSYTR 57
>gnl|CDD|218794 pfam05883, Baculo_RING, Baculovirus U-box/Ring-like domain. This
family consists of several Baculovirus proteins of
around 130 residues in length. The function of this
family is unknown, but it appears to be related to the
U-box and ring finger domain by profile-profile
comparison.
Length = 135
Score = 28.8 bits (65), Expect = 0.80
Identities = 12/52 (23%), Positives = 22/52 (42%), Gaps = 9/52 (17%)
Query: 2 DEWTLNDLLECSVCLDRLD--------TSSKVLPCQHTFCKKCLEEIVSSHK 45
++W +EC++CLDR++ T L + F +C + K
Sbjct: 20 EQWP-RCTVECAICLDRINDNDGVVAVTDGGTLNLEKMFHAECDKRWKRERK 70
>gnl|CDD|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 = 27.3 bits (60), Expect = 0.82
Identities = 9/19 (47%), Positives = 12/19 (63%)
Query: 111 WFYGEVNGTTGAFPMSYVQ 129
W GE+ G TG FP +Y +
Sbjct: 36 WLGGELKGKTGWFPANYAE 54
Score = 27.3 bits (60), Expect = 0.82
Identities = 9/19 (47%), Positives = 12/19 (63%)
Query: 134 WFYGEVNGTTGAFPMSYVQ 152
W GE+ G TG FP +Y +
Sbjct: 36 WLGGELKGKTGWFPANYAE 54
>gnl|CDD|212704 cd11770, SH3_Nephrocystin, Src Homology 3 domain of Nephrocystin
(or Nephrocystin-1). Nephrocystin contains an SH3
domain involved in signaling pathways that regulate cell
adhesion and cytoskeletal organization. It is a protein
that in humans is associated with juvenile
nephronophthisis, an inherited kidney disease
characterized by renal fibrosis that lead to chronic
renal failure in children. It is localized in cell-cell
junctions in renal duct cells, and is known to interact
with Ack1, an activated Cdc42-associated kinase. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 54
Score = 27.3 bits (61), Expect = 0.85
Identities = 12/40 (30%), Positives = 23/40 (57%), Gaps = 1/40 (2%)
Query: 92 DLNFKKDDIV-ILRRKIDNNWFYGEVNGTTGAFPMSYVQI 130
DL+FKK +++ I+ ++ D W G G P +Y+++
Sbjct: 15 DLSFKKGEVLRIISKRADGWWLAENSKGNRGLVPKTYLKV 54
>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 = 26.8 bits (60), Expect = 1.1
Identities = 12/38 (31%), Positives = 18/38 (47%), Gaps = 2/38 (5%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGE--VNGTTGAFPMSY 127
DL+FKK D + + D +W+ G G P +Y
Sbjct: 15 DLSFKKGDRLQILDDSDGDWWLARHLSTGKEGYIPSNY 52
>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 = 26.8 bits (59), Expect = 1.1
Identities = 11/38 (28%), Positives = 20/38 (52%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGEVNGTTGAFPMSYVQ 129
DL + D V++ + +W+ G+ G FP ++VQ
Sbjct: 15 DLPLQPGDRVMVVDDSNEDWWKGKSGDRVGFFPANFVQ 52
>gnl|CDD|222944 PHA02929, PHA02929, N1R/p28-like protein; Provisional.
Length = 238
Score = 29.0 bits (65), Expect = 1.1
Identities = 15/51 (29%), Positives = 25/51 (49%), Gaps = 9/51 (17%)
Query: 11 ECSVCLDRL-DTSSK-----VLP-CQHTFCKKCLEEIVSSHKELRCPECRV 54
EC++C++++ D K +L C H FC +C++ CP CR
Sbjct: 176 ECAICMEKVYDKEIKNMYFGILSNCNHVFCIECIDIWKKEKN--TCPVCRT 224
>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 = 26.8 bits (59), Expect = 1.2
Identities = 10/37 (27%), Positives = 21/37 (56%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGEVNGTTGAFPMSYV 128
DL+F + + + + W+ G++ TG FPM+++
Sbjct: 15 DLDFHPGERITVIDDSNEEWWRGKIGEKTGYFPMNFI 51
>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 = 26.9 bits (60), Expect = 1.2
Identities = 10/38 (26%), Positives = 21/38 (55%), Gaps = 1/38 (2%)
Query: 93 LNFKKDDIVILRRKIDNNWFY-GEVNGTTGAFPMSYVQ 129
L+F + + +L + + +W+ +G TG P +YV+
Sbjct: 16 LSFSEGETFLLLERSNAHWWLVTNHSGETGYVPANYVK 53
>gnl|CDD|173792 cd04843, Peptidases_S8_11, Peptidase S8 family domain,
uncharacterized subfamily 11. This family is a member
of the Peptidases S8 or Subtilases serine endo- and
exo-peptidase clan. They have an Asp/His/Ser catalytic
triad similar to that found in trypsin-like proteases,
but do not share their three-dimensional structure and
are not homologous to trypsin. The stability of
subtilases may be enhanced by calcium, some members have
been shown to bind up to 4 ions via binding sites with
different affinity. Some members of this clan contain
disulfide bonds. These enzymes can be intra- and
extracellular, some function at extreme temperatures and
pH values.
Length = 277
Score = 28.8 bits (65), Expect = 1.3
Identities = 12/45 (26%), Positives = 21/45 (46%), Gaps = 3/45 (6%)
Query: 105 RKID-NNWFYGEVNGTTGAFPMSYVQIDNNWFYGEVNGTTGAFPM 148
++D W GE TTG + + +N + +GT+ A P+
Sbjct: 201 SRVDVYGW--GENVTTTGYGDLQDLGGENQDYTDSFSGTSSASPI 243
>gnl|CDD|212742 cd11808, SH3_Alpha_Spectrin, Src homology 3 domain of Alpha
Spectrin. Spectrin is a major structural component of
the red blood cell membrane skeleton and is important in
erythropoiesis and membrane biogenesis. It is a
flexible, rope-like molecule composed of two subunits,
alpha and beta, which consist of many spectrin-type
repeats. Alpha and beta spectrin associate to form
heterodimers and tetramers; spectrin tetramer formation
is critical for red cell shape and deformability.
Defects in alpha spectrin have been associated with
inherited hemolytic anemias including hereditary
spherocytosis (HSp), hereditary elliptocytosis (HE), and
hereditary pyropoikilocytosis (HPP). Alpha spectrin
contains a middle SH3 domain and a C-terminal EF-hand
binding motif in addition to multiple spectrin repeats.
SH3 domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 53
Score = 26.7 bits (59), Expect = 1.3
Identities = 13/38 (34%), Positives = 22/38 (57%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGEVNGTTGAFPMSYVQ 129
+++ KK DI+ L + +W+ EVN G P +YV+
Sbjct: 15 EVSMKKGDILTLLNSSNKDWWKVEVNDRQGFVPAAYVK 52
>gnl|CDD|212744 cd11810, SH3_RUSC1_like, Src homology 3 domain of RUN and SH3
domain-containing proteins 1 and 2. RUSC1 and RUSC2,
that were originally characterized in silico. They are
adaptor proteins consisting of RUN, leucine zipper, and
SH3 domains. RUSC1, also called NESCA (New molecule
containing SH3 at the carboxy-terminus), is highly
expressed in the brain and is translocated to the
nuclear membrane from the cytoplasm upon stimulation
with neurotrophin. It plays a role in facilitating
neurotrophin-dependent neurite outgrowth. It also
interacts with NEMO (or IKKgamma) and may function in
NEMO-mediated activation of NF-kB. RUSC2, also called
Iporin, is expressed ubiquitously with highest amounts
in the brain and testis. It interacts with the small
GTPase Rab1 and the Golgi matrix protein GM130, and may
function in linking GTPases to certain intracellular
signaling pathways. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP motifs.
They play versatile and diverse roles in the cell
including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 50
Score = 26.6 bits (59), Expect = 1.4
Identities = 12/35 (34%), Positives = 21/35 (60%)
Query: 93 LNFKKDDIVILRRKIDNNWFYGEVNGTTGAFPMSY 127
L+F+K DI+ + ++D++W T G P+SY
Sbjct: 16 LSFRKGDILRVIARVDDDWLLCTRGSTKGLVPLSY 50
>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 = 26.4 bits (58), Expect = 1.5
Identities = 11/36 (30%), Positives = 20/36 (55%)
Query: 93 LNFKKDDIVILRRKIDNNWFYGEVNGTTGAFPMSYV 128
L+F K DI+ + + D +W + +G P++YV
Sbjct: 16 LSFNKGDILQVLSRADGDWLRCSLGPDSGLVPIAYV 51
>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 = 26.5 bits (59), Expect = 1.5
Identities = 7/37 (18%), Positives = 16/37 (43%), Gaps = 2/37 (5%)
Query: 93 LNFKKDDIVILRRKIDNN--WFYGEVNGTTGAFPMSY 127
L+ D+++ + + + GE G P++Y
Sbjct: 16 LSLLADEVITVYELPGMDEDYMMGERGSQRGKVPVAY 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 = 26.3 bits (58), Expect = 1.6
Identities = 11/42 (26%), Positives = 21/42 (50%), Gaps = 1/42 (2%)
Query: 88 LNILDLNFKKDDIVILRRKIDNNWFYG-EVNGTTGAFPMSYV 128
+N DL +K + ++ + + W+ + NG G P +YV
Sbjct: 12 MNAQDLQLRKGEEYVILEESNLPWWRARDKNGREGYIPSNYV 53
>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 = 26.3 bits (58), Expect = 1.7
Identities = 13/40 (32%), Positives = 24/40 (60%), Gaps = 2/40 (5%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGE--VNGTTGAFPMSYVQ 129
+L +K DI+++R++ + W G +G G FP S+V+
Sbjct: 15 ELTLEKADIIMVRQQSSDGWLEGVRLSDGERGWFPQSHVE 54
>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 = 26.3 bits (58), Expect = 1.7
Identities = 11/37 (29%), Positives = 21/37 (56%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGEVNGTTGAFPMSYV 128
+L F D++ + + +W+ G ++G G FP +YV
Sbjct: 15 ELGFNSGDVIEVLDSSNPSWWKGRLHGKLGLFPANYV 51
>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 = 26.2 bits (58), Expect = 2.0
Identities = 13/40 (32%), Positives = 21/40 (52%), Gaps = 2/40 (5%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGE--VNGTTGAFPMSYVQ 129
+L +K ++ + K + WF G G +G FP +YVQ
Sbjct: 15 ELELRKGEMYTVTEKCQDGWFKGTSLRTGQSGVFPGNYVQ 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 = 26.2 bits (58), Expect = 2.1
Identities = 10/33 (30%), Positives = 19/33 (57%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGEVNGTTGAFP 124
+L+F+ D + + +++ W GE+ G G FP
Sbjct: 15 ELDFEVGDRIRIIATLEDGWLEGELKGRRGIFP 47
>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 = 26.3 bits (58), Expect = 2.1
Identities = 11/37 (29%), Positives = 22/37 (59%)
Query: 93 LNFKKDDIVILRRKIDNNWFYGEVNGTTGAFPMSYVQ 129
++F+K V + K + W+Y +++G G P SY++
Sbjct: 16 ISFQKGQKVEVIDKNPSGWWYVKIDGKEGWAPSSYIE 52
>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 = 25.8 bits (56), Expect = 2.6
Identities = 10/39 (25%), Positives = 21/39 (53%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGEVNGTTGAFPMSYVQI 130
+L FK D++ + + +W++G FP S+V++
Sbjct: 16 ELAFKAGDVIRVLEASNKDWWWGRNEDREAWFPASFVRL 54
>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 = 25.8 bits (57), Expect = 2.8
Identities = 13/42 (30%), Positives = 22/42 (52%), Gaps = 6/42 (14%)
Query: 92 DLNFKKDDIVILRRKIDN--NWFYGEV-NGTTGAFPMSYVQI 130
+L+F+K +I+ D W+ NG TG P +Y+Q+
Sbjct: 17 ELSFEKGEIL---EVSDTSGKWWQARKSNGETGICPSNYLQL 55
>gnl|CDD|223924 COG0855, Ppk, Polyphosphate kinase [Inorganic ion transport and
metabolism].
Length = 696
Score = 28.0 bits (63), Expect = 2.9
Identities = 15/46 (32%), Positives = 20/46 (43%)
Query: 61 DELPPNVLLMRILEGLFPLVVSFIRFFLNILDLNFKKDDIVILRRK 106
D L P L RI E + LV R F +L K+ I I+ +
Sbjct: 75 DGLTPREQLGRIQERVLKLVQEQDRLFNELLLPLLAKEGIFIVNYR 120
>gnl|CDD|152159 pfam11723, Aromatic_hydrox, Homotrimeric ring hydroxylase. This
domain is found on aromatic hydroxylating enzymes such
as 2-oxo-1,2-dihydroquinoline 8-monooxygenase from
Pseudomonas putida and carbazole 1,9a-dioxygenase from
Janthinobacterium. These enzymes are homotrimers and are
distantly related to the typical oxygenase. This domain
is found C terminal to the Rieske domain which binds an
iron-sulphur cluster.
Length = 240
Score = 27.4 bits (61), Expect = 3.1
Identities = 16/60 (26%), Positives = 23/60 (38%), Gaps = 8/60 (13%)
Query: 94 NFKKDDIVIL--RRKIDNNWFYGEVNGTTGAFPMSYVQIDNNWFYGEVNGTTGAFPMSYV 151
F DD + RR + +NW NG F +V I + V G A P+ +
Sbjct: 17 GFLDDDTAVHGIRRVVASNWRLAVENG----FDPGHVFIHKDSPL--VYGNDLALPLGFA 70
>gnl|CDD|212691 cd11757, SH3_SH3BP4, Src Homology 3 domain of SH3 domain-binding
protein 4. SH3 domain-binding protein 4 (SH3BP4) is
also called transferrin receptor trafficking protein
(TTP). SH3BP4 is an endocytic accessory protein that
interacts with endocytic proteins including clathrin and
dynamin, and regulates the internalization of the
transferrin receptor (TfR). SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles in
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 = 25.8 bits (56), Expect = 3.1
Identities = 13/41 (31%), Positives = 16/41 (39%)
Query: 89 NILDLNFKKDDIVILRRKIDNNWFYGEVNGTTGAFPMSYVQ 129
N L F K D + + W+Y G P SYVQ
Sbjct: 12 NFTTLKFSKGDHLYVLDTSGGEWWYAHNTTEMGYIPSSYVQ 52
>gnl|CDD|187758 cd09318, TDT_SSU1, Tellurite-resistance/Dicarboxylate Transporter
(TDT) family includes sulfite sensitivity protein
(sulfite efflux pump; SSU1). This family contains the
sulfite sensitivity protein (sulfite efflux pump; SSU1)
and belongs to the tellurite-resistance/dicarboxylate
transporter (TDT) family. The SSU1 gene encodes the
sulfite pump required for efficient sulfite efflux.
Mutations in the SSU1 gene cause sensitivity to sulfite
while overexpression confers heightened resistance to
sulfite toxicity. In dematophytes and other filamentous
fungi, sulfite is excreted as a reducing agent during
keratin degradation; thus sulfite transporters in
keratinolytic fungi could be a new target for antifungal
drugs in dermatology. The number of genes encoding
sulfite efflux pumps in fungal genomes varies from
species to species.
Length = 341
Score = 27.5 bits (62), Expect = 3.3
Identities = 8/41 (19%), Positives = 11/41 (26%), Gaps = 4/41 (9%)
Query: 121 GAFPMSYVQIDNNWFYGEVNGTTGAFPMSYVQFVWYLPIIN 161
G PM I N + + W L I+
Sbjct: 80 GTIPMGLATIINGIVL----LCGPVWGPWAIILAWVLWWID 116
>gnl|CDD|131964 TIGR02918, TIGR02918, accessory Sec system glycosylation protein
GtfA. Members of this protein family are found only in
Gram-positive bacteria of the Firmicutes lineage,
including several species of Staphylococcus,
Streptococcus, and Lactobacillus. Members are associated
with glycosylation of serine-rich glycoproteins exported
by the accessory Sec system [Protein fate, Protein
modification and repair].
Length = 500
Score = 27.4 bits (61), Expect = 3.9
Identities = 11/27 (40%), Positives = 13/27 (48%), Gaps = 2/27 (7%)
Query: 83 FIRFFLNILDLNFKKDDIVILRRKIDN 109
I +FL LN K DI+IL R
Sbjct: 199 LIAYFLK--QLNLTKKDIIILDRSTGI 223
>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 = 25.2 bits (56), Expect = 4.1
Identities = 9/24 (37%), Positives = 10/24 (41%), Gaps = 3/24 (12%)
Query: 110 NWFYGEV---NGTTGAFPMSYVQI 130
W+ G G FP SYV I
Sbjct: 32 GWYRGFSLRNKSLKGIFPKSYVHI 55
>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 = 25.7 bits (56), Expect = 4.3
Identities = 11/31 (35%), Positives = 17/31 (54%)
Query: 93 LNFKKDDIVILRRKIDNNWFYGEVNGTTGAF 123
L F+ DI+ + K D+NW+ G V G+
Sbjct: 23 LKFQTGDIIQIINKDDSNWWQGRVEGSGEES 53
>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 = 25.4 bits (56), Expect = 4.3
Identities = 13/39 (33%), Positives = 20/39 (51%), Gaps = 1/39 (2%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGEVNGTTGA-FPMSYVQ 129
+L+F K I+ K D W+ G+ G FP +YV+
Sbjct: 15 ELSFCKHAIITNVEKEDGGWWRGDYGGKKQKWFPANYVE 53
>gnl|CDD|221570 pfam12421, DUF3672, Fibronectin type III protein. This domain
family is found in bacteria and viruses, and is
typically between 126 and 146 amino acids in length. The
family is found in association with pfam09327,
pfam00041. There are two completely conserved G residues
that may be functionally important. Many of the proteins
in this family are annotated as fibronectin type III
however there is little accompanying literature to
confirm this.
Length = 130
Score = 26.3 bits (58), Expect = 4.9
Identities = 10/35 (28%), Positives = 15/35 (42%), Gaps = 5/35 (14%)
Query: 108 DNNWFYGEVNGTTGAFPMSYVQIDNNWFYGEVNGT 142
+N G +N +G F + V I N + GT
Sbjct: 10 NNADIRGNINANSGTF--NNVTIAEN---CTILGT 39
>gnl|CDD|147761 pfam05785, CNF1, Rho-activating domain of cytotoxic necrotizing
factor. This family consists of several bacterial
cytotoxic necrotizing factor proteins as well as related
dermonecrotic toxin (DNT) from Bordetella species.
Cytotoxic necrotizing factor 1 (CNF1) causes necrosis of
rabbit skin and re-organisation of the actin
cytoskeleton in cultured cells. Bordetella dermonecrotic
toxin (DNT) stimulates the assembly of actin stress
fibres and focal adhesions by deamidating or
polyaminating Gln63 of the small GTPase Rho. DNT is an
A-B toxin which is composed of an N-terminal
receptor-binding (B) domain and a C-terminal
enzymatically active (A) domain.
Length = 281
Score = 26.9 bits (60), Expect = 5.6
Identities = 16/64 (25%), Positives = 23/64 (35%), Gaps = 21/64 (32%)
Query: 96 KKDDIVILRRKIDNNWFYGEVNGTTG----AFPMSYVQIDNNW----------FYGEVNG 141
DI +L+ K G + G F + V+ D+N FYG + G
Sbjct: 14 NSGDISVLKGK-------GIIGGKRTREPLPFYIKKVRFDSNGQSVSQGTDQPFYGNIIG 66
Query: 142 TTGA 145
TG
Sbjct: 67 WTGD 70
>gnl|CDD|238554 cd01134, V_A-ATPase_A, V/A-type ATP synthase catalytic subunit A.
These ATPases couple ATP hydrolysis to the build up of a
H+ gradient, but V-type ATPases do not catalyze the
reverse reaction. The Vacuolar (V-type) ATPase is found
in the membranes of vacuoles, the golgi apparatus and in
other coated vesicles in eukaryotes. Archaea have a
protein which is similar in sequence to V-ATPases, but
functions like an F-ATPase (called A-ATPase). A similar
protein is also found in a few bacteria.
Length = 369
Score = 26.8 bits (60), Expect = 6.3
Identities = 11/21 (52%), Positives = 14/21 (66%), Gaps = 3/21 (14%)
Query: 63 LPPNVLL---MRILEGLFPLV 80
LPPN L R+L+ LFP+V
Sbjct: 135 LPPNEPLLTGQRVLDTLFPVV 155
>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 = 25.0 bits (55), Expect = 6.5
Identities = 14/39 (35%), Positives = 22/39 (56%), Gaps = 2/39 (5%)
Query: 93 LNFKKDDIVILRRKIDNNWFY-GEVNGT-TGAFPMSYVQ 129
L+F D+V + +D + FY GE+ G G P ++VQ
Sbjct: 23 LSFHAGDVVRVYGPMDEDGFYYGELEGGRKGLVPSNFVQ 61
>gnl|CDD|216319 pfam01134, GIDA, Glucose inhibited division protein A.
Length = 391
Score = 26.7 bits (60), Expect = 6.7
Identities = 8/17 (47%), Positives = 12/17 (70%)
Query: 105 RKIDNNWFYGEVNGTTG 121
+KI +F G++NGT G
Sbjct: 352 KKIPGLFFAGQINGTEG 368
>gnl|CDD|187803 cd09672, Cas8a1_I-A, CRISPR/Cas system-associated protein Cas8a1.
CRISPR (Clustered Regularly Interspaced Short
Palindromic Repeats) and associated Cas proteins
comprise a system for heritable host defense by
prokaryotic cells against phage and other foreign DNA;
Large proteins, some contain Zn-finger domain; signature
gene for I-A subtype; also known as TM1802 family.
Length = 545
Score = 26.7 bits (59), Expect = 6.8
Identities = 10/25 (40%), Positives = 13/25 (52%)
Query: 87 FLNILDLNFKKDDIVILRRKIDNNW 111
+L I+DLN + I I RR D
Sbjct: 33 YLVIIDLNLNSEKINIYRRDFDKQE 57
>gnl|CDD|129242 TIGR00136, gidA, glucose-inhibited division protein A. GidA, the
longer of two forms of GidA-related proteins, appears to
be present in all complete eubacterial genomes so far,
as well as Saccharomyces cerevisiae. A subset of these
organisms have a closely related protein. GidA is absent
in the Archaea. It appears to act with MnmE, in an
alpha2/beta2 heterotetramer, in the
5-carboxymethylaminomethyl modification of uridine 34 in
certain tRNAs. The shorter, related protein, previously
called gid or gidA(S), is now called TrmFO (see model
TIGR00137) [Protein synthesis, tRNA and rRNA base
modification].
Length = 617
Score = 26.6 bits (59), Expect = 6.9
Identities = 8/17 (47%), Positives = 12/17 (70%)
Query: 105 RKIDNNWFYGEVNGTTG 121
+ I +F G++NGTTG
Sbjct: 355 KLIQGLFFAGQINGTTG 371
>gnl|CDD|212794 cd11860, SH3_DLG5, Src homology 3 domain of Disks Large homolog 5.
DLG5 is a multifunctional scaffold protein that is
located at sites of cell-cell contact and is involved in
the maintenance of cell shape and polarity. Mutations in
the DLG5 gene are associated with Crohn's disease (CD)
and inflammatory bowel disease (IBD). DLG5 is a member
of the MAGUK (membrane-associated guanylate kinase)
protein family, which is characterized by the presence
of a core of three domains: PDZ, SH3, and guanylate
kinase (GuK). The GuK domain in MAGUK proteins is
enzymatically inactive; instead, the domain mediates
protein-protein interactions and associates
intramolecularly with the SH3 domain. DLG5 contains 4
PDZ domains as well as an N-terminal domain of unknown
function. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate affinity
and selectivity, preferentially to PxxP motifs. They
play versatile and diverse roles in the cell including
the regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 63
Score = 24.6 bits (54), Expect = 8.6
Identities = 13/30 (43%), Positives = 17/30 (56%), Gaps = 8/30 (26%)
Query: 92 DLNFKKDDIVILRRKIDNNWFYGEVNGTTG 121
+L+FKKDDI+ +DN F NG G
Sbjct: 15 ELSFKKDDILY----VDNTMF----NGVFG 36
>gnl|CDD|238022 cd00065, FYVE, FYVE domain; Zinc-binding domain; targets proteins
to membrane lipids via interaction with
phosphatidylinositol-3-phosphate, PI3P; present in
Fab1, YOTB, Vac1, and EEA1;.
Length = 57
Score = 24.3 bits (53), Expect = 8.8
Identities = 8/31 (25%), Positives = 9/31 (29%)
Query: 28 CQHTFCKKCLEEIVSSHKELRCPECRVLVEC 58
C FC KC + RV C
Sbjct: 24 CGRIFCSKCSSNRIPLPSMGGGKPVRVCDSC 54
>gnl|CDD|227568 COG5243, HRD1, HRD ubiquitin ligase complex, ER membrane component
[Posttranslational modification, protein turnover,
chaperones].
Length = 491
Score = 26.5 bits (58), Expect = 9.0
Identities = 15/54 (27%), Positives = 24/54 (44%), Gaps = 14/54 (25%)
Query: 12 CSVCLDRL------------DTSSKVLPCQHTFCKKCLEEIVSSHKELRCPECR 53
C++C+D + D + K LPC H CL+ + ++ CP CR
Sbjct: 290 CTICMDEMFHPDHEPLPRGLDMTPKRLPCGHILHLHCLKNWL--ERQQTCPICR 341
>gnl|CDD|224021 COG1096, COG1096, Predicted RNA-binding protein (consists of S1
domain and a Zn-ribbon domain) [Translation, ribosomal
structure and biogenesis].
Length = 188
Score = 25.8 bits (57), Expect = 10.0
Identities = 7/20 (35%), Positives = 10/20 (50%)
Query: 33 CKKCLEEIVSSHKELRCPEC 52
C +C +V L+CP C
Sbjct: 152 CSRCRAPLVKKGNMLKCPNC 171
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
0.327 0.143 0.470
Gapped
Lambda K H
0.267 0.0804 0.140
Matrix: BLOSUM62
Gap Penalties: Existence: 11, Extension: 1
Number of Sequences: 44354
Number of Hits to DB: 8,446,448
Number of extensions: 784680
Number of successful extensions: 1353
Number of sequences better than 10.0: 1
Number of HSP's gapped: 1330
Number of HSP's successfully gapped: 302
Length of query: 162
Length of database: 10,937,602
Length adjustment: 89
Effective length of query: 73
Effective length of database: 6,990,096
Effective search space: 510277008
Effective search space used: 510277008
Neighboring words threshold: 11
Window for multiple hits: 40
X1: 15 ( 7.1 bits)
X2: 38 (14.6 bits)
X3: 64 (24.7 bits)
S1: 40 (21.6 bits)
S2: 55 (24.8 bits)