RPS-BLAST 2.2.26 [Sep-21-2011]
Database: CDD.v3.10
44,354 sequences; 10,937,602 total letters
Searching..................................................done
Query= psy4417
(440 letters)
>gnl|CDD|212796 cd11862, SH3_MPP, Src Homology 3 domain of Membrane Protein,
Palmitoylated (or MAGUK p55 subfamily member) proteins.
The MPP/p55 subfamily of MAGUK (membrane-associated
guanylate kinase) proteins includes at least eight
vertebrate members (MPP1-7 and CASK), four Drosophila
proteins (Stardust, Varicose, CASK and Skiff), and other
similar proteins; they all contain one each of the core
of three domains characteristic of MAGUK proteins: PDZ,
SH3, and guanylate kinase (GuK). In addition, most
members except for MPP1 contain N-terminal L27 domains
and some also contain a Hook (Protein 4.1 Binding) motif
in between the SH3 and GuK domains. CASK has an
additional calmodulin-dependent kinase (CaMK)-like
domain at the N-terminus. Members of this subfamily are
scaffolding proteins that play important roles in
regulating and establishing cell polarity, cell
adhesion, and synaptic targeting and transmission, among
others. The GuK domain in MAGUK proteins is
enzymatically inactive; instead, the domain mediates
protein-protein interactions and associates
intramolecularly with the SH3 domain. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 61
Score = 113 bits (285), Expect = 4e-31
Identities = 38/61 (62%), Positives = 49/61 (80%), Gaps = 1/61 (1%)
Query: 99 YMRCLFTYDPKEDSLLPCKEIGLAFNHGDILQILNQKDPNWWQAQLI-EPTGPMGLVPSQ 157
++R LF YDP+ED L+PCKE GL+F GDILQI+NQ DPNWWQA+ + +P G GL+PSQ
Sbjct: 1 FVRALFDYDPEEDPLIPCKEAGLSFKKGDILQIVNQDDPNWWQARKVGDPNGRAGLIPSQ 60
Query: 158 E 158
+
Sbjct: 61 D 61
>gnl|CDD|214504 smart00072, GuKc, Guanylate kinase homologues. Active enzymes
catalyze ATP-dependent phosphorylation of GMP to GDP.
Structure resembles that of adenylate kinase. So-called
membrane-associated guanylate kinase homologues (MAGUKs)
do not possess guanylate kinase activities; instead at
least some possess protein-binding functions.
Length = 174
Score = 103 bits (259), Expect = 5e-26
Identities = 51/177 (28%), Positives = 76/177 (42%), Gaps = 52/177 (29%)
Query: 283 GTVTAKLI-----PYTYSIPICSWSSFFASDTTRPMRELEENGQNYWFTSREVMERDIQD 337
GT+ A+LI + + TTRP R E NG +Y F S+E E DI+
Sbjct: 6 GTLLAELIQEIPDAFERVVS----------HTTRPPRPGEVNGVDYHFVSKEEFEDDIKS 55
Query: 338 HKFLEYGEHNGHLYGTHLDSIREVILSGKICVLDCSP----------------------- 374
FLE+GE+ G+ YGT ++IR+V GK C+LD P
Sbjct: 56 GLFLEWGEYEGNYYGTSKETIRQVAEKGKHCLLDIDPQGVKQLRKAQLYPIVIFIAPPSS 115
Query: 375 -------------VEEDIKRTLEESACLQRSYERFIDKVIVNEDFDETFRTVIELLD 418
E I++ L + + Y F D VIVN+D ++ + + E+L+
Sbjct: 116 EELERRLRQRGTETSERIQKRLAAAQKEAQEYHLF-DYVIVNDDLEDAYEELKEILE 171
Score = 93.1 bits (232), Expect = 2e-22
Identities = 35/74 (47%), Positives = 46/74 (62%)
Query: 200 RSFPDTTRPMRELEENGQNYWFTSREVMERDIQDHKFLEYGEHNGHLYGTHLDSIREVIL 259
R TTRP R E NG +Y F S+E E DI+ FLE+GE+ G+ YGT ++IR+V
Sbjct: 22 RVVSHTTRPPRPGEVNGVDYHFVSKEEFEDDIKSGLFLEWGEYEGNYYGTSKETIRQVAE 81
Query: 260 SGKICVLDCSPVGL 273
GK C+LD P G+
Sbjct: 82 KGKHCLLDIDPQGV 95
>gnl|CDD|201353 pfam00625, Guanylate_kin, Guanylate kinase.
Length = 183
Score = 103 bits (259), Expect = 5e-26
Identities = 48/148 (32%), Positives = 71/148 (47%), Gaps = 37/148 (25%)
Query: 307 SDTTRPMRELEENGQNYWFTSREVMERDIQDHKFLEYGEHNGHLYGTHLDSIREVILSGK 366
S TTRP R E +G++Y F S+E ME DI ++FLEY E NG+ YGT ++I ++ SGK
Sbjct: 35 SHTTRPPRPGEVDGKDYHFVSKEEMENDISANEFLEYAEFNGNYYGTSKEAIEQIAESGK 94
Query: 367 ICVLDCSP-------------------------VEEDIKRTLEESA-----------CLQ 390
IC+LD ++ +KR E
Sbjct: 95 ICILDVDIQGVKQLRKAELSPISVFIKPPSLKVLQRRLKRRGTEQEEKINKRMEAAEQEF 154
Query: 391 RSYERFIDKVIVNEDFDETFRTVIELLD 418
+ Y F D +IVN+D DE ++ + E+L+
Sbjct: 155 QHYALF-DYIIVNDDLDEAYKKLKEILE 181
Score = 98.2 bits (245), Expect = 5e-24
Identities = 35/73 (47%), Positives = 48/73 (65%)
Query: 201 SFPDTTRPMRELEENGQNYWFTSREVMERDIQDHKFLEYGEHNGHLYGTHLDSIREVILS 260
S TTRP R E +G++Y F S+E ME DI ++FLEY E NG+ YGT ++I ++ S
Sbjct: 33 SVSHTTRPPRPGEVDGKDYHFVSKEEMENDISANEFLEYAEFNGNYYGTSKEAIEQIAES 92
Query: 261 GKICVLDCSPVGL 273
GKIC+LD G+
Sbjct: 93 GKICILDVDIQGV 105
>gnl|CDD|212970 cd12037, SH3_MPP2, Src Homology 3 domain of Membrane Protein,
Palmitoylated 2 (or MAGUK p55 subfamily member 2). MPP2
is a scaffolding protein that interacts with the
non-receptor tyrosine kinase c-Src in epithelial cells
to negatively regulate its activity and morphological
function. It is one of seven vertebrate homologs of the
Drosophila Stardust protein, which is required in
establishing cell polarity, and it contains two L27
domains followed by the core of three domains
characteristic of MAGUK (membrane-associated guanylate
kinase) proteins: PDZ, SH3, and guanylate kinase (GuK).
In addition, it also contains the Hook (Protein 4.1
Binding) motif in between the SH3 and GuK domains. The
GuK domain in MAGUK proteins is enzymatically inactive;
instead, the domain mediates protein-protein
interactions and associates intramolecularly with the
SH3 domain. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate affinity
and selectivity, preferentially to PxxP motifs. They
play versatile and diverse roles in the cell including
the regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 59
Score = 91.6 bits (227), Expect = 4e-23
Identities = 36/59 (61%), Positives = 45/59 (76%), Gaps = 1/59 (1%)
Query: 99 YMRCLFTYDPKEDSLLPCKEIGLAFNHGDILQILNQKDPNWWQAQLIEPTGPMGLVPSQ 157
+++C F YDP DSL+PCKE GL F GD+LQI+NQ+DPNWWQA +E G GL+PSQ
Sbjct: 1 FVKCHFDYDPSSDSLIPCKEAGLKFRAGDLLQIVNQEDPNWWQACHVE-GGSAGLIPSQ 58
>gnl|CDD|212968 cd12035, SH3_MPP1-like, Src Homology 3 domain of Membrane Protein,
Palmitoylated 1 (or MAGUK p55 subfamily member 1)-like
proteins. This subfamily includes MPP1, CASK
(Calcium/calmodulin-dependent Serine protein Kinase),
Caenorhabditis elegans lin-2, and similar proteins. MPP1
and CASK are scaffolding proteins from the MAGUK
(membrane-associated guanylate kinase) protein family,
which is characterized by the presence of a core of
three domains: PDZ, SH3, and guanylate kinase (GuK). In
addition, they also have the Hook (Protein 4.1 Binding)
motif in between the SH3 and GuK domains. The GuK domain
in MAGUK proteins is enzymatically inactive; instead,
the domain mediates protein-protein interactions and
associates intramolecularly with the SH3 domain. CASK
and lin-2 also contain an N-terminal
calmodulin-dependent kinase (CaMK)-like domain and two
L27 domains. MPP1 is ubiquitously-expressed and plays
roles in regulating neutrophil polarity, cell shape,
hair cell development, and neural development and
patterning of the retina. CASK is highly expressed in
the mammalian nervous system and plays roles in synaptic
protein targeting, neural development, and gene
expression regulation. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 62
Score = 91.3 bits (227), Expect = 6e-23
Identities = 32/62 (51%), Positives = 44/62 (70%), Gaps = 1/62 (1%)
Query: 99 YMRCLFTYDPKEDSLLPCKEIGLAFNHGDILQILNQKDPNWWQAQLIEPT-GPMGLVPSQ 157
Y+R F YDP +D L+PC++ G+AF GDILQI+++ D NWWQA+ + P GL+PS
Sbjct: 1 YVRAQFDYDPSKDDLIPCQQAGIAFKTGDILQIISKDDHNWWQARKPGASKEPAGLIPSP 60
Query: 158 EL 159
EL
Sbjct: 61 EL 62
>gnl|CDD|238026 cd00071, GMPK, Guanosine monophosphate kinase (GMPK, EC 2.7.4.8),
also known as guanylate kinase (GKase), catalyzes the
reversible phosphoryl transfer from adenosine
triphosphate (ATP) to guanosine monophosphate (GMP) to
yield adenosine diphosphate (ADP) and guanosine
diphosphate (GDP). It plays an essential role in the
biosynthesis of guanosine triphosphate (GTP). This
enzyme is also important for the activation of some
antiviral and anticancer agents, such as acyclovir,
ganciclovir, carbovir, and thiopurines.
Length = 137
Score = 91.1 bits (227), Expect = 5e-22
Identities = 35/112 (31%), Positives = 59/112 (52%), Gaps = 20/112 (17%)
Query: 307 SDTTRPMRELEENGQNYWFTSREVMERDIQDHKFLEYGEHNGHLYGTHLDSIREVILSGK 366
S TTR R E +G +Y F S+E ER I++ +FLE+ E +G+ YGT ++ E + GK
Sbjct: 32 SHTTRKPRPGEVDGVDYHFVSKEEFERLIENGEFLEWAEFHGNYYGTSKAAVEEALAEGK 91
Query: 367 ICVLDCSPVEED----IKRTLEESACLQRSYERFI-----DKVIVNEDFDET 409
I +L+ ++ +K++ ++ I D VIVN+D ++
Sbjct: 92 IVILE---IDVQGARQVKKSYPDA--------VSIFILPPDYVIVNDDLEKA 132
Score = 83.0 bits (206), Expect = 4e-19
Identities = 26/63 (41%), Positives = 40/63 (63%)
Query: 205 TTRPMRELEENGQNYWFTSREVMERDIQDHKFLEYGEHNGHLYGTHLDSIREVILSGKIC 264
TTR R E +G +Y F S+E ER I++ +FLE+ E +G+ YGT ++ E + GKI
Sbjct: 34 TTRKPRPGEVDGVDYHFVSKEEFERLIENGEFLEWAEFHGNYYGTSKAAVEEALAEGKIV 93
Query: 265 VLD 267
+L+
Sbjct: 94 ILE 96
>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 = 86.2 bits (213), Expect = 4e-21
Identities = 34/62 (54%), Positives = 43/62 (69%), Gaps = 1/62 (1%)
Query: 99 YMRCLFTYDPKEDSLLPCKEIGLAFNHGDILQILNQKDPNWWQAQL-IEPTGPMGLVPSQ 157
YMR F YDPK+D+L+PCKE GL F GDI+QI+N+ D NWWQ ++ GL+PS
Sbjct: 1 YMRAQFDYDPKKDNLIPCKEAGLKFQTGDIIQIINKDDSNWWQGRVEGSGEESAGLIPSP 60
Query: 158 EL 159
EL
Sbjct: 61 EL 62
>gnl|CDD|213788 TIGR03263, guanyl_kin, guanylate kinase. Members of this family
are the enzyme guanylate kinase, also called GMP kinase.
This enzyme transfers a phosphate from ATP to GMP,
yielding ADP and GDP [Purines, pyrimidines, nucleosides,
and nucleotides, Nucleotide and nucleoside
interconversions].
Length = 179
Score = 89.1 bits (222), Expect = 6e-21
Identities = 37/147 (25%), Positives = 62/147 (42%), Gaps = 37/147 (25%)
Query: 307 SDTTRPMRELEENGQNYWFTSREVMERDIQDHKFLEYGEHNGHLYGTHLDSIREVILSGK 366
S TTR R E +G +Y+F S+E E I+ +FLE+ E +G+ YGT + E + +GK
Sbjct: 32 SATTRKPRPGEVDGVDYFFVSKEEFEEMIKAGEFLEWAEVHGNYYGTPKSPVEEALAAGK 91
Query: 367 ICVLDC------------------------------------SPVEEDIKRTLEESACLQ 390
+L+ + EE I+R L ++
Sbjct: 92 DVLLEIDVQGARQVKKKFPDAVSIFILPPSLEELERRLRKRGTDSEEVIERRLAKAKKEI 151
Query: 391 RSYERFIDKVIVNEDFDETFRTVIELL 417
+ F D VIVN+D ++ + ++
Sbjct: 152 AHADEF-DYVIVNDDLEKAVEELKSII 177
Score = 82.9 bits (206), Expect = 1e-18
Identities = 24/63 (38%), Positives = 38/63 (60%)
Query: 205 TTRPMRELEENGQNYWFTSREVMERDIQDHKFLEYGEHNGHLYGTHLDSIREVILSGKIC 264
TTR R E +G +Y+F S+E E I+ +FLE+ E +G+ YGT + E + +GK
Sbjct: 34 TTRKPRPGEVDGVDYFFVSKEEFEEMIKAGEFLEWAEVHGNYYGTPKSPVEEALAAGKDV 93
Query: 265 VLD 267
+L+
Sbjct: 94 LLE 96
>gnl|CDD|212971 cd12038, SH3_MPP6, Src Homology 3 domain of Membrane Protein,
Palmitoylated 6 (or MAGUK p55 subfamily member 6).
MPP6, also called Veli-associated MAGUK 1 (VAM-1) or
PALS2, is a scaffolding protein that binds to Veli-1, a
homolog of Caenorhabditis Lin-7. It is one of seven
vertebrate homologs of the Drosophila Stardust protein,
which is required in establishing cell polarity, and it
contains two L27 domains followed by the core of three
domains characteristic of MAGUK (membrane-associated
guanylate kinase) proteins: PDZ, SH3, and guanylate
kinase (GuK). In addition, it also contains the Hook
(Protein 4.1 Binding) motif in between the SH3 and GuK
domains. The GuK domain in MAGUK proteins is
enzymatically inactive; instead, the domain mediates
protein-protein interactions and associates
intramolecularly with the SH3 domain. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 61
Score = 81.3 bits (200), Expect = 2e-19
Identities = 33/61 (54%), Positives = 47/61 (77%)
Query: 99 YMRCLFTYDPKEDSLLPCKEIGLAFNHGDILQILNQKDPNWWQAQLIEPTGPMGLVPSQE 158
+++C F Y+P D+L+PCKE GL F+ G+ILQI+N++DPNWWQA ++ G GL+PSQ
Sbjct: 1 FVKCHFDYNPYNDNLIPCKEAGLKFSKGEILQIVNREDPNWWQASHVKEGGSAGLIPSQF 60
Query: 159 L 159
L
Sbjct: 61 L 61
>gnl|CDD|213014 cd12081, SH3_CASK, Src Homology 3 domain of
Calcium/calmodulin-dependent Serine protein Kinase.
CASK is a scaffolding protein that is highly expressed
in the mammalian nervous system and plays roles in
synaptic protein targeting, neural development, and gene
expression regulation. CASK interacts with many
different binding partners including parkin, neurexin,
syndecans, calcium channel proteins, caskin, among
others, to perform specific functions in different
subcellular locations. Disruption of the CASK gene in
mice results in neonatal lethality while mutations in
the human gene have been associated with X-linked mental
retardation. Drosophila CASK is associated with both
pre- and postsynaptic membranes and is crucial in
synaptic transmission and vesicle cycling. CASK contains
an N-terminal calmodulin-dependent kinase (CaMK)-like
domain, two L27 domains, followed by the core of three
domains characteristic of MAGUK (membrane-associated
guanylate kinase) proteins: PDZ, SH3, and guanylate
kinase (GuK). In addition, it also contains the Hook
(Protein 4.1 Binding) motif in between the SH3 and GuK
domains. The GuK domain in MAGUK proteins is
enzymatically inactive; instead, the domain mediates
protein-protein interactions and associates
intramolecularly with the SH3 domain. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 62
Score = 79.2 bits (195), Expect = 1e-18
Identities = 33/62 (53%), Positives = 43/62 (69%), Gaps = 1/62 (1%)
Query: 99 YMRCLFTYDPKEDSLLPCKEIGLAFNHGDILQILNQKDPNWWQAQLIEPT-GPMGLVPSQ 157
Y+R F YDP +D L+PCK+ G+ F GDILQI+++ D NWWQA+L G GL+PS
Sbjct: 1 YVRAQFEYDPLKDDLIPCKQAGIRFRVGDILQIISKDDHNWWQAKLENSKNGTAGLIPSP 60
Query: 158 EL 159
EL
Sbjct: 61 EL 62
>gnl|CDD|212969 cd12036, SH3_MPP5, Src Homology 3 domain of Membrane Protein,
Palmitoylated 5 (or MAGUK p55 subfamily member 5).
MPP5, also called PALS1 (Protein associated with Lin7)
or Nagie oko protein in zebrafish or Stardust in
Drosophila, is a scaffolding protein which associates
with Crumbs homolog 1 (CRB1), CRB2, or CRB3 through its
PDZ domain and with PALS1-associated tight junction
protein (PATJ) or multi-PDZ domain protein 1 (MUPP1)
through its L27 domain. The resulting tri-protein
complexes are core proteins of the Crumb complex, which
localizes at tight junctions or subapical regions, and
is involved in the maintenance of apical-basal polarity
in epithelial cells and the morphogenesis and function
of photoreceptor cells. MPP5 is critical for the proper
stratification of the retina and is also expressed in T
lymphocytes where it is important for TCR-mediated
activation of NFkB. Drosophila Stardust exists in
several isoforms, some of which show opposing functions
in photoreceptor cells, which suggests that the relative
ratio of different Crumbs complexes regulates
photoreceptor homeostasis. MPP5 contains two L27 domains
followed by the core of three domains characteristic of
MAGUK (membrane-associated guanylate kinase) proteins:
PDZ, SH3, and guanylate kinase (GuK). In addition, it
also contains the Hook (Protein 4.1 Binding) motif in
between the SH3 and GuK domains. The GuK domain in MAGUK
proteins is enzymatically inactive; instead, the domain
mediates protein-protein interactions and associates
intramolecularly with the SH3 domain. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 63
Score = 78.6 bits (194), Expect = 2e-18
Identities = 29/63 (46%), Positives = 45/63 (71%), Gaps = 3/63 (4%)
Query: 99 YMRCLFTYDPKEDSLLPCKEIGLAFNHGDILQILNQKDPNWWQA--QLIEPTGPM-GLVP 155
++R F YDP++D +PC+E+GL+F GDIL +++Q+DPNWWQA + E + GL+P
Sbjct: 1 HVRAHFDYDPEDDPYIPCRELGLSFQKGDILHVISQEDPNWWQAYREGEEDNQSLAGLIP 60
Query: 156 SQE 158
S+
Sbjct: 61 SKS 63
>gnl|CDD|223272 COG0194, Gmk, Guanylate kinase [Nucleotide transport and
metabolism].
Length = 191
Score = 81.4 bits (202), Expect = 5e-18
Identities = 37/142 (26%), Positives = 60/142 (42%), Gaps = 41/142 (28%)
Query: 307 SDTTRPMRELEENGQNYWFTSREVMERDIQDHKFLEYGEHNGHLYGTHLDSIREVILSGK 366
S TTR R E +G +Y+F + E E I+ +FLE+ E++G+ YGT + + + + GK
Sbjct: 35 SATTRKPRPGEVDGVDYFFVTEEEFEELIERDEFLEWAEYHGNYYGTSREPVEQALAEGK 94
Query: 367 ICVLDC------------------------------------SPVEEDIKRTLEESACLQ 390
+LD + EE I R LE + +
Sbjct: 95 DVILDIDVQGALQVKKKMPNAVSIFILPPSLEELERRLKGRGTDSEEVIARRLENA---K 151
Query: 391 R--SYERFIDKVIVNEDFDETF 410
+ S+ D VIVN+D ++
Sbjct: 152 KEISHADEFDYVIVNDDLEKAL 173
Score = 72.2 bits (178), Expect = 8e-15
Identities = 23/63 (36%), Positives = 38/63 (60%)
Query: 205 TTRPMRELEENGQNYWFTSREVMERDIQDHKFLEYGEHNGHLYGTHLDSIREVILSGKIC 264
TTR R E +G +Y+F + E E I+ +FLE+ E++G+ YGT + + + + GK
Sbjct: 37 TTRKPRPGEVDGVDYFFVTEEEFEELIERDEFLEWAEYHGNYYGTSREPVEQALAEGKDV 96
Query: 265 VLD 267
+LD
Sbjct: 97 ILD 99
>gnl|CDD|212966 cd12033, SH3_MPP7, Src Homology 3 domain of Membrane Protein,
Palmitoylated 7 (or MAGUK p55 subfamily member 7). MPP7
is a scaffolding protein that binds to DLG1 and promotes
tight junction formation and epithelial cell polarity.
Mutations in the MPP7 gene may be associated with the
pathogenesis of diabetes and extreme bone mineral
density. It is one of seven vertebrate homologs of the
Drosophila Stardust protein, which is required in
establishing cell polarity, and it contains two L27
domains followed by the core of three domains
characteristic of MAGUK (membrane-associated guanylate
kinase) proteins: PDZ, SH3, and guanylate kinase (GuK).
The GuK domain in MAGUK proteins is enzymatically
inactive; instead, the domain mediates protein-protein
interactions and associates intramolecularly with the
SH3 domain. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate affinity
and selectivity, preferentially to PxxP motifs. They
play versatile and diverse roles in the cell including
the regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 61
Score = 75.8 bits (186), Expect = 2e-17
Identities = 30/61 (49%), Positives = 41/61 (67%), Gaps = 1/61 (1%)
Query: 99 YMRCLFTYDPKEDSLLPCKEIGLAFNHGDILQILNQKDPNWWQAQLIEPTGP-MGLVPSQ 157
+++ LF Y+P ED +PCKE GL+F GDILQI++Q D WWQA+ P GL+PS+
Sbjct: 1 FIKALFDYNPNEDKAIPCKEAGLSFKKGDILQIMSQDDATWWQAKHEGDANPRAGLIPSK 60
Query: 158 E 158
Sbjct: 61 H 61
>gnl|CDD|212972 cd12039, SH3_MPP3, Src Homology 3 domain of Membrane Protein,
Palmitoylated 3 (or MAGUK p55 subfamily member 3). MPP3
is a scaffolding protein that colocalizes with MPP5 and
CRB1 at the subdpical region adjacent to adherens
junctions and may function in photoreceptor polarity. It
interacts with some nectins and regulates their
trafficking and processing. Nectins are cell-cell
adhesion proteins involved in the establishment
apical-basal polarity at cell adhesion sites. It is one
of seven vertebrate homologs of the Drosophila Stardust
protein, which is required in establishing cell
polarity, and it contains two L27 domains followed by
the core of three domains characteristic of MAGUK
(membrane-associated guanylate kinase) proteins: PDZ,
SH3, and guanylate kinase (GuK). The GuK domain in MAGUK
proteins is enzymatically inactive; instead, the domain
mediates protein-protein interactions and associates
intramolecularly with the SH3 domain. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 62
Score = 75.0 bits (184), Expect = 4e-17
Identities = 29/62 (46%), Positives = 42/62 (67%), Gaps = 1/62 (1%)
Query: 99 YMRCLFTYDPKEDSLLPCKEIGLAFNHGDILQILNQKDPNWWQAQLIEPTG-PMGLVPSQ 157
+MR LF Y+P ED +PC+E GL F DIL++++Q DP WWQA+ + T GL+PS+
Sbjct: 1 FMRALFDYNPYEDRAIPCQEAGLPFKRRDILEVVSQDDPTWWQAKRVGDTNLRAGLIPSK 60
Query: 158 EL 159
+
Sbjct: 61 QF 62
>gnl|CDD|234719 PRK00300, gmk, guanylate kinase; Provisional.
Length = 205
Score = 78.2 bits (194), Expect = 8e-17
Identities = 37/147 (25%), Positives = 59/147 (40%), Gaps = 37/147 (25%)
Query: 307 SDTTRPMRELEENGQNYWFTSREVMERDIQDHKFLEYGEHNGHLYGTHLDSIREVILSGK 366
S TTR R E +G +Y+F S+E E I++ +FLE+ E G+ YGT + E + +GK
Sbjct: 37 SATTRAPRPGEVDGVDYFFVSKEEFEEMIENGEFLEWAEVFGNYYGTPRSPVEEALAAGK 96
Query: 367 ICVLD------------------------------------CSPVEEDIKRTLEESACLQ 390
+L+ + EE I R L ++
Sbjct: 97 DVLLEIDWQGARQVKKKMPDAVSIFILPPSLEELERRLRGRGTDSEEVIARRLAKAREEI 156
Query: 391 RSYERFIDKVIVNEDFDETFRTVIELL 417
+ D VIVN+D D + ++
Sbjct: 157 AHASEY-DYVIVNDDLDTALEELKAII 182
Score = 76.7 bits (190), Expect = 3e-16
Identities = 24/63 (38%), Positives = 38/63 (60%)
Query: 205 TTRPMRELEENGQNYWFTSREVMERDIQDHKFLEYGEHNGHLYGTHLDSIREVILSGKIC 264
TTR R E +G +Y+F S+E E I++ +FLE+ E G+ YGT + E + +GK
Sbjct: 39 TTRAPRPGEVDGVDYFFVSKEEFEEMIENGEFLEWAEVFGNYYGTPRSPVEEALAAGKDV 98
Query: 265 VLD 267
+L+
Sbjct: 99 LLE 101
>gnl|CDD|215414 PLN02772, PLN02772, guanylate kinase.
Length = 398
Score = 81.0 bits (200), Expect = 1e-16
Identities = 57/192 (29%), Positives = 89/192 (46%), Gaps = 44/192 (22%)
Query: 279 GLIEGTVTAKLIPYTYSIPICSWSSFFASDTTRPMRELEENGQNYWFTSREVMERDIQDH 338
G+ +GT+ + L+ P S F S TTR RE+E++G +Y FT R VME++I+D
Sbjct: 145 GVGKGTLISMLMK---EFP--SMFGFSVSHTTRAPREMEKDGVHYHFTERSVMEKEIKDG 199
Query: 339 KFLEYGEHNGHLYGTHLDSIREVILSGKICVLD---------------------CSP--- 374
KFLE+ +G+LYGT ++++ V SGK C+LD C P
Sbjct: 200 KFLEFASVHGNLYGTSIEAVEVVTDSGKRCILDIDVQGARSVRASSLEAIFIFICPPSME 259
Query: 375 ------------VEEDI-KRTLEESACLQRSYERFI-DKVIVNEDFDETFRTVIELLDTL 420
EE I KR A L++ I D ++ N++ +E ++ + +LL L
Sbjct: 260 ELEKRLRARGTETEEQIQKRLRNAEAELEQGKSSGIFDHILYNDNLEECYKNLKKLLG-L 318
Query: 421 SNKHQVDSRPTI 432
V+
Sbjct: 319 DGLAAVNGVEAP 330
Score = 75.3 bits (185), Expect = 1e-14
Identities = 37/81 (45%), Positives = 53/81 (65%), Gaps = 9/81 (11%)
Query: 195 STLMSRSFPD--------TTRPMRELEENGQNYWFTSREVMERDIQDHKFLEYGEHNGHL 246
S LM + FP TTR RE+E++G +Y FT R VME++I+D KFLE+ +G+L
Sbjct: 153 SMLM-KEFPSMFGFSVSHTTRAPREMEKDGVHYHFTERSVMEKEIKDGKFLEFASVHGNL 211
Query: 247 YGTHLDSIREVILSGKICVLD 267
YGT ++++ V SGK C+LD
Sbjct: 212 YGTSIEAVEVVTDSGKRCILD 232
>gnl|CDD|212795 cd11861, SH3_DLG-like, Src Homology 3 domain of Disks large homolog
proteins. The DLG-like proteins are scaffolding
proteins that cluster at synapses and are also called
PSD (postsynaptic density)-95 proteins or SAPs
(synapse-associated proteins). They play important roles
in synaptic development and plasticity, cell polarity,
migration and proliferation. They are members of the
MAGUK (membrane-associated guanylate kinase) protein
family, which is characterized by the presence of a core
of three domains: PDZ, SH3, and guanylate kinase (GuK).
The GuK domain in MAGUK proteins is enzymatically
inactive; instead, the domain mediates protein-protein
interactions and associates intramolecularly with the
SH3 domain. DLG-like proteins contain three PDZ domains
and varying N-terminal regions. All DLG proteins exist
as alternatively-spliced isoforms. Vertebrates contain
four DLG proteins from different genes, called DLG1-4.
DLG4 and DLG2 are found predominantly at postsynaptic
sites and they mediate surface ion channel and receptor
clustering. DLG3 is found axons and some presynaptic
terminals. DLG1 interacts with AMPA-type glutamate
receptors and is critical in their maturation and
delivery to synapses. The SH3 domain of DLG4 binds and
clusters the kainate subgroup of glutamate receptors via
two proline-rich sequences in their C-terminal tail. It
also binds AKAP79/150 (A-kinase anchoring protein). SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 61
Score = 67.0 bits (164), Expect = 3e-14
Identities = 29/61 (47%), Positives = 38/61 (62%), Gaps = 5/61 (8%)
Query: 99 YMRCLFTYDPKEDSLLPCKEIGLAFNHGDILQILNQKDPNWWQAQLIEPTGP---MGLVP 155
Y+R LF YDP DS LP + GL+F GDIL + N D WWQA+ + P G +G++P
Sbjct: 1 YVRALFDYDPSRDSGLPSQ--GLSFKFGDILHVTNASDDEWWQARRVTPNGEEEEVGVIP 58
Query: 156 S 156
S
Sbjct: 59 S 59
>gnl|CDD|212967 cd12034, SH3_MPP4, Src Homology 3 domain of Membrane Protein,
Palmitoylated 4 (or MAGUK p55 subfamily member 4).
MPP4, also called Disks Large homolog 6 (DLG6) or
Amyotrophic lateral sclerosis 2 chromosomal region
candidate gene 5 protein (ALS2CR5), is a retina-specific
scaffolding protein that plays a role in organizing
presynaptic protein complexes in the photoreceptor
synapse, where it localizes to the plasma membrane. It
is required in the proper localization of calcium
ATPases and for maintenance of calcium homeostasis. MPP4
is one of seven vertebrate homologs of the Drosophila
Stardust protein, which is required in establishing cell
polarity, and it contains two L27 domains followed by
the core of three domains characteristic of MAGUK
(membrane-associated guanylate kinase) proteins: PDZ,
SH3, and guanylate kinase (GuK). The GuK domain in MAGUK
proteins is enzymatically inactive; instead, the domain
mediates protein-protein interactions and associates
intramolecularly with the SH3 domain. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 61
Score = 65.3 bits (159), Expect = 1e-13
Identities = 26/59 (44%), Positives = 37/59 (62%), Gaps = 1/59 (1%)
Query: 99 YMRCLFTYDPKEDSLLPCKEIGLAFNHGDILQILNQKDPNWWQAQLIEPTGP-MGLVPS 156
Y+R + Y P++D +PC + GL F GDILQI++Q D WWQA+ + GL+PS
Sbjct: 1 YVRAMVDYWPQQDPSIPCADAGLPFRKGDILQIVDQNDSLWWQARKLSDLAACAGLIPS 59
>gnl|CDD|212965 cd12032, SH3_DLG2, Src Homology 3 domain of Disks Large homolog 2.
DLG2, also called postsynaptic density-93 (PSD93) or
Channel-associated protein of synapse-110 (chapsyn 110),
is a scaffolding protein that clusters at synapses and
plays an important role in synaptic development and
plasticity. The DLG2 delta isoform binds inwardly
rectifying potassium Kir2 channels, which determine
resting membrane potential in neurons. It regulates the
spatial and temporal distribution of Kir2 channels
within neuronal membranes. DLG2 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. DLG2 contains three PDZ domains. SH3 domains
are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 74
Score = 65.5 bits (159), Expect = 1e-13
Identities = 29/69 (42%), Positives = 45/69 (65%), Gaps = 5/69 (7%)
Query: 99 YMRCLFTYDPKEDSLLPCKEIGLAFNHGDILQILNQKDPNWWQAQLIEPTG---PMGLVP 155
Y+R +F Y+ +DS LP + GL+F +GDIL ++N D WWQA+ + P G MG++P
Sbjct: 7 YVRAMFDYEKSKDSGLPSQ--GLSFRYGDILHVINASDDEWWQARRVTPDGDSEEMGVIP 64
Query: 156 SQELEERRK 164
S+ ER++
Sbjct: 65 SKRRVERKE 73
>gnl|CDD|212962 cd12029, SH3_DLG3, Src Homology 3 domain of Disks Large homolog 3.
DLG3, also called synapse-associated protein 102
(SAP102), is a scaffolding protein that clusters at
synapses and plays an important role in synaptic
development and plasticity. Mutations in DLG3 cause
midgestational embryonic lethality in mice and may be
associated with nonsyndromic X-linked mental retardation
in humans. It interacts with the NEDD4 (neural precursor
cell-expressed developmentally downregulated 4) family
of ubiquitin ligases and promotes apical tight junction
formation. DLG3 is a member of the MAGUK
(membrane-associated guanylate kinase) protein family,
which is characterized by the presence of a core of
three domains: PDZ, SH3, and guanylate kinase (GuK). The
GuK domain in MAGUK proteins is enzymatically inactive;
instead, the domain mediates protein-protein
interactions and associates intramolecularly with the
SH3 domain. DLG3 contains three PDZ domains. SH3 domains
are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 67
Score = 64.7 bits (157), Expect = 2e-13
Identities = 30/66 (45%), Positives = 44/66 (66%), Gaps = 5/66 (7%)
Query: 99 YMRCLFTYDPKEDSLLPCKEIGLAFNHGDILQILNQKDPNWWQAQLIEPTGP---MGLVP 155
Y+R LF YD DS LP + GL+F++GDIL ++N D WWQA+L+ P G +G++P
Sbjct: 4 YVRALFDYDRTRDSCLPSQ--GLSFSYGDILHVINASDDEWWQARLVTPHGESEQIGVIP 61
Query: 156 SQELEE 161
S++ E
Sbjct: 62 SKKRVE 67
>gnl|CDD|212964 cd12031, SH3_DLG1, Src Homology 3 domain of Disks Large homolog 1.
DLG1, also called synapse-associated protein 97 (SAP97),
is a scaffolding protein that clusters at synapses and
plays an important role in synaptic development and
plasticity. DLG1 plays roles in regulating cell
polarity, proliferation, migration, and cycle
progression. It interacts with AMPA-type glutamate
receptors and is critical in their maturation and
delivery to synapses. It also interacts with PKCalpha
and promotes wound healing. DLG1 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. DLG1 contains three PDZ domains. SH3 domains
are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 67
Score = 60.5 bits (146), Expect = 5e-12
Identities = 28/66 (42%), Positives = 39/66 (59%), Gaps = 5/66 (7%)
Query: 99 YMRCLFTYDPKEDSLLPCKEIGLAFNHGDILQILNQKDPNWWQAQLIEPTG---PMGLVP 155
Y+R LF YD +DS LP + GL F GDIL ++N D WWQA+ + G +G++P
Sbjct: 4 YVRALFDYDKTKDSGLPSQ--GLNFKFGDILHVVNASDDEWWQARQVTADGESEEIGVIP 61
Query: 156 SQELEE 161
S+ E
Sbjct: 62 SKRRVE 67
>gnl|CDD|201332 pfam00595, PDZ, PDZ domain (Also known as DHR or GLGF). PDZ
domains are found in diverse signaling proteins.
Length = 80
Score = 50.7 bits (122), Expect = 2e-08
Identities = 17/66 (25%), Positives = 33/66 (50%), Gaps = 3/66 (4%)
Query: 21 LTVEQDANGNLIIARILAGSLIDKQGVLKVGDVILGVNGENVS--SPEDLQIEVVKSDGN 78
L D + + ++ +L G + G L+ GD IL +NG+++ S ++ + + S G
Sbjct: 16 LVGGSDGDPGIFVSEVLPGGAAEAGG-LQEGDRILSINGQDLENLSHDEAVLALKGSGGE 74
Query: 79 IQFTIA 84
+ TI
Sbjct: 75 VTLTIL 80
>gnl|CDD|237809 PRK14738, gmk, guanylate kinase; Provisional.
Length = 206
Score = 52.0 bits (125), Expect = 1e-07
Identities = 21/68 (30%), Positives = 35/68 (51%)
Query: 303 SFFASDTTRPMRELEENGQNYWFTSREVMERDIQDHKFLEYGEHNGHLYGTHLDSIREVI 362
F + TTRP R E +G +Y F + E I ++ LE+ E G+ YG +R+ +
Sbjct: 41 HFVVTATTRPKRPGEIDGVDYHFVTPEEFREMISQNELLEWAEVYGNYYGVPKAPVRQAL 100
Query: 363 LSGKICVL 370
SG+ ++
Sbjct: 101 ASGRDVIV 108
Score = 50.9 bits (122), Expect = 2e-07
Identities = 20/62 (32%), Positives = 33/62 (53%)
Query: 205 TTRPMRELEENGQNYWFTSREVMERDIQDHKFLEYGEHNGHLYGTHLDSIREVILSGKIC 264
TTRP R E +G +Y F + E I ++ LE+ E G+ YG +R+ + SG+
Sbjct: 47 TTRPKRPGEIDGVDYHFVTPEEFREMISQNELLEWAEVYGNYYGVPKAPVRQALASGRDV 106
Query: 265 VL 266
++
Sbjct: 107 IV 108
>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 = 47.7 bits (114), Expect = 1e-07
Identities = 23/61 (37%), Positives = 33/61 (54%), Gaps = 10/61 (16%)
Query: 101 RCLFTYDPKEDSLLPCKEIGLAFNHGDILQILNQKDPNWWQAQLIEPTGPMGLVPSQELE 160
R L+ Y+ + E L+F GD+L I ++ DPNWW+A G GL+PS +E
Sbjct: 3 RALYDYEAQHP-----DE--LSFEEGDLLYISDKSDPNWWKATC---GGKTGLIPSNYVE 52
Query: 161 E 161
E
Sbjct: 53 E 53
>gnl|CDD|214570 smart00228, PDZ, Domain present in PSD-95, Dlg, and ZO-1/2. Also
called DHR (Dlg homologous region) or GLGF (relatively
well conserved tetrapeptide in these domains). Some
PDZs have been shown to bind C-terminal polypeptides;
others appear to bind internal (non-C-terminal)
polypeptides. Different PDZs possess different binding
specificities.
Length = 85
Score = 48.5 bits (116), Expect = 2e-07
Identities = 23/72 (31%), Positives = 39/72 (54%), Gaps = 5/72 (6%)
Query: 20 GLTV--EQDANGNLIIARILAGSLIDKQGVLKVGDVILGVNGENVSSPEDLQIEVV--KS 75
G ++ +D G ++++ ++ GS K G L+VGDVIL VNG +V L+ + K+
Sbjct: 15 GFSLVGGKDEGGGVVVSSVVPGSPAAKAG-LRVGDVILEVNGTSVEGLTHLEAVDLLKKA 73
Query: 76 DGNIQFTIAPQG 87
G + T+ G
Sbjct: 74 GGKVTLTVLRGG 85
>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 = 47.1 bits (113), Expect = 2e-07
Identities = 18/61 (29%), Positives = 28/61 (45%), Gaps = 9/61 (14%)
Query: 96 PVCYMRCLFTYDPKEDSLLPCKEIGLAFNHGDILQILNQKDPNWWQAQLIEPTGPMGLVP 155
+R L+ Y ++ L K+ GDI+ +L + D WW+ +L G GL P
Sbjct: 1 EGPQVRALYDYTAQDPDELSFKK-------GDIITVLEKSDDGWWKGRLG--RGKEGLFP 51
Query: 156 S 156
S
Sbjct: 52 S 52
>gnl|CDD|238492 cd00992, PDZ_signaling, PDZ domain found in a variety of
Eumetazoan signaling molecules, often in tandem
arrangements. May be responsible for specific
protein-protein interactions, as most PDZ domains bind
C-terminal polypeptides, and binding to internal
(non-C-terminal) polypeptides and even to lipids has
been demonstrated. In this subfamily of PDZ domains an
N-terminal beta-strand forms the peptide-binding groove
base, a circular permutation with respect to PDZ
domains found in proteases.
Length = 82
Score = 47.6 bits (114), Expect = 3e-07
Identities = 24/81 (29%), Positives = 42/81 (51%), Gaps = 8/81 (9%)
Query: 8 LKKILGTGLSPCGLTV--EQDANGNLIIARILAGSLIDKQGVLKVGDVILGVNGENVS-- 63
L+K G GL G ++ +D+ G + ++R+ G ++ G L+VGD IL VNG +V
Sbjct: 6 LRKDPGGGL---GFSLRGGKDSGGGIFVSRVEPGGPAERGG-LRVGDRILEVNGVSVEGL 61
Query: 64 SPEDLQIEVVKSDGNIQFTIA 84
+ E+ + S + T+
Sbjct: 62 THEEAVELLKNSGDEVTLTVR 82
>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 = 46.4 bits (110), Expect = 3e-07
Identities = 20/58 (34%), Positives = 32/58 (55%), Gaps = 10/58 (17%)
Query: 99 YMRCLFTYDPKEDSLLPCKEIGLAFNHGDILQILNQKDPNWWQAQLIEPTGPMGLVPS 156
Y++ LF +DP+ED E+G F GD +++++ DPNWW+ G G+ P
Sbjct: 1 YVQALFDFDPQEDG-----ELG--FRRGDFIEVMDNSDPNWWKGACH---GQTGMFPR 48
>gnl|CDD|173199 PRK14737, gmk, guanylate kinase; Provisional.
Length = 186
Score = 49.6 bits (118), Expect = 4e-07
Identities = 23/68 (33%), Positives = 37/68 (54%)
Query: 304 FFASDTTRPMRELEENGQNYWFTSREVMERDIQDHKFLEYGEHNGHLYGTHLDSIREVIL 363
F S TTR R +E G+ Y+F + E ++ I D +FLE+ E + + YGT I +
Sbjct: 33 FSISCTTRAPRPGDEEGKTYFFLTIEEFKKGIADGEFLEWAEVHDNYYGTPKAFIEDAFK 92
Query: 364 SGKICVLD 371
G+ ++D
Sbjct: 93 EGRSAIMD 100
Score = 48.5 bits (115), Expect = 1e-06
Identities = 21/63 (33%), Positives = 35/63 (55%)
Query: 205 TTRPMRELEENGQNYWFTSREVMERDIQDHKFLEYGEHNGHLYGTHLDSIREVILSGKIC 264
TTR R +E G+ Y+F + E ++ I D +FLE+ E + + YGT I + G+
Sbjct: 38 TTRAPRPGDEEGKTYFFLTIEEFKKGIADGEFLEWAEVHDNYYGTPKAFIEDAFKEGRSA 97
Query: 265 VLD 267
++D
Sbjct: 98 IMD 100
>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 = 45.5 bits (109), Expect = 7e-07
Identities = 19/58 (32%), Positives = 30/58 (51%), Gaps = 9/58 (15%)
Query: 99 YMRCLFTYDPKEDSLLPCKEIGLAFNHGDILQILNQKDPNWWQAQLIEPTGPMGLVPS 156
Y R L+ Y+ ++D L K+ GDI+ +L + D WW+ +L G GL P+
Sbjct: 1 YARALYDYEAQDDDELSFKK-------GDIITVLEKDDDGWWEGELNG--GREGLFPA 49
>gnl|CDD|212963 cd12030, SH3_DLG4, Src Homology 3 domain of Disks Large homolog 4.
DLG4, also called postsynaptic density-95 (PSD95) or
synapse-associated protein 90 (SAP90), is a scaffolding
protein that clusters at synapses and plays an important
role in synaptic development and plasticity. It is
responsible for the membrane clustering and retention of
many transporters and receptors such as potassium
channels and PMCA4b, a P-type ion transport ATPase,
among others. DLG4 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. DLG4 contains three PDZ domains. The SH3
domain of DLG4 binds and clusters the kainate subgroup
of glutamate receptors via two proline-rich sequences in
their C-terminal tail. It also binds AKAP79/150
(A-kinase anchoring protein). SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 66
Score = 44.9 bits (106), Expect = 2e-06
Identities = 21/66 (31%), Positives = 34/66 (51%), Gaps = 5/66 (7%)
Query: 99 YMRCLFTYDPKEDSLLPCKEIGLAFNHGDILQILNQKDPNWWQAQLIEPTGP---MGLVP 155
Y+R LF YD +D + L+F GD+L +++ D WWQA+ + +G +P
Sbjct: 3 YIRALFDYDKTKDCGFLSQ--ALSFRFGDVLHVIDAGDEEWWQARRVHSDSETEEIGFIP 60
Query: 156 SQELEE 161
S+ E
Sbjct: 61 SKRRVE 66
>gnl|CDD|238080 cd00136, PDZ, PDZ domain, also called DHR (Dlg homologous region)
or GLGF (after a conserved sequence motif). Many PDZ
domains bind C-terminal polypeptides, though binding to
internal (non-C-terminal) polypeptides and even to
lipids has been demonstrated. Heterodimerization
through PDZ-PDZ domain interactions adds to the
domain's versatility, and PDZ domain-mediated
interactions may be modulated dynamically through
target phosphorylation. Some PDZ domains play a role in
scaffolding supramolecular complexes. PDZ domains are
found in diverse signaling proteins in bacteria,
archebacteria, and eurkayotes. This CD contains two
distinct structural subgroups with either a N- or
C-terminal beta-strand forming the peptide-binding
groove base. The circular permutation placing the
strand on the N-terminus appears to be found in
Eumetazoa only, while the C-terminal variant is found
in all three kingdoms of life, and seems to co-occur
with protease domains. PDZ domains have been named
after PSD95(post synaptic density protein), DlgA
(Drosophila disc large tumor suppressor), and ZO1, a
mammalian tight junction protein.
Length = 70
Score = 44.6 bits (106), Expect = 2e-06
Identities = 18/67 (26%), Positives = 34/67 (50%), Gaps = 4/67 (5%)
Query: 20 GLTVEQDANGNLIIARILAGSLIDKQGVLKVGDVILGVNGENVSSPEDLQI-EVVK--SD 76
G ++ G +++ + GS ++ G L+ GDVIL VNG +V + + E++K
Sbjct: 4 GFSIRGGTEGGVVVLSVEPGSPAERAG-LQAGDVILAVNGTDVKNLTLEDVAELLKKEVG 62
Query: 77 GNIQFTI 83
+ T+
Sbjct: 63 EKVTLTV 69
>gnl|CDD|212779 cd11845, SH3_Src_like, Src homology 3 domain of Src kinase-like
Protein Tyrosine Kinases. Src subfamily members include
Src, Lck, Hck, Blk, Lyn, Fgr, Fyn, Yrk, Yes, and Brk.
Src (or c-Src) proteins are cytoplasmic (or
non-receptor) PTKs which are anchored to the plasma
membrane. They contain an N-terminal SH4 domain with a
myristoylation site, followed by SH3 and SH2 domains, a
tyr kinase domain, and a regulatory C-terminal region
containing a conserved tyr. They are activated by
autophosphorylation at the tyr kinase domain, but are
negatively regulated by phosphorylation at the
C-terminal tyr by Csk (C-terminal Src Kinase). However,
Brk lacks the N-terminal myristoylation sites. Src
proteins are involved in signaling pathways that
regulate cytokine and growth factor responses,
cytoskeleton dynamics, cell proliferation, survival, and
differentiation. They were identified as the first
proto-oncogene products, and they regulate cell
adhesion, invasion, and motility in cancer cells, and
tumor vasculature, contributing to cancer progression
and metastasis. Src kinases are overexpressed in a
variety of human cancers, making them attractive targets
for therapy. They are also implicated in acute
inflammatory responses and osteoclast function. Src,
Fyn, Yes, and Yrk are widely expressed, while Blk, Lck,
Hck, Fgr, Lyn, and Brk show a limited expression
pattern. This subfamily also includes Drosophila Src42A,
Src oncogene at 42A (also known as Dsrc41) which
accumulates at sites of cell-cell or cell-matrix
adhesion, and participates in Drosphila development and
wound healing. It has been shown to promote tube
elongation in the tracheal system, is essential for
proper cell-cell matching during dorsal closure, and
regulates cell-cell contacts in developing Drosophila
eyes. The SH3 domain of Src kinases contributes to
substrate recruitment by binding adaptor
proteins/substrates, and regulation of kinase activity
through an intramolecular interaction. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 52
Score = 43.7 bits (104), Expect = 3e-06
Identities = 20/54 (37%), Positives = 28/54 (51%), Gaps = 8/54 (14%)
Query: 103 LFTYDPKEDSLLPCKEIGLAFNHGDILQILNQKDPNWWQAQLIEPTGPMGLVPS 156
L+ Y+ + D L F GD LQIL+ D +WW A+ + TG G +PS
Sbjct: 5 LYDYEARTDDDLS-------FKKGDRLQILDDSDGDWWLARHLS-TGKEGYIPS 50
>gnl|CDD|238487 cd00987, PDZ_serine_protease, PDZ domain of tryspin-like serine
proteases, such as DegP/HtrA, which are oligomeric
proteins involved in heat-shock response, chaperone
function, and apoptosis. May be responsible for
substrate recognition and/or binding, as most PDZ
domains bind C-terminal polypeptides, though binding to
internal (non-C-terminal) polypeptides and even to
lipids has been demonstrated. In this subfamily of
protease-associated PDZ domains a C-terminal
beta-strand forms the peptide-binding groove base, a
circular permutation with respect to PDZ domains found
in Eumetazoan signaling proteins.
Length = 90
Score = 44.9 bits (107), Expect = 3e-06
Identities = 21/53 (39%), Positives = 29/53 (54%), Gaps = 3/53 (5%)
Query: 33 IARILAGSLIDKQGVLKVGDVILGVNGENVSSPEDLQ--IEVVKSDGNIQFTI 83
+A + GS K G LK GDVIL VNG+ V S DL+ + +K + T+
Sbjct: 28 VASVDPGSPAAKAG-LKPGDVILAVNGKPVKSVADLRRALAELKPGDKVTLTV 79
>gnl|CDD|238489 cd00989, PDZ_metalloprotease, PDZ domain of bacterial and plant
zinc metalloprotases, presumably membrane-associated or
integral membrane proteases, which may be involved in
signalling and regulatory mechanisms. May be
responsible for substrate recognition and/or binding,
as most PDZ domains bind C-terminal polypeptides, and
binding to internal (non-C-terminal) polypeptides and
even to lipids has been demonstrated. In this subfamily
of protease-associated PDZ domains a C-terminal
beta-strand forms the peptide-binding groove base, a
circular permutation with respect to PDZ domains found
in Eumetazoan signaling proteins.
Length = 79
Score = 44.1 bits (105), Expect = 4e-06
Identities = 22/66 (33%), Positives = 35/66 (53%), Gaps = 2/66 (3%)
Query: 32 IIARILAGSLIDKQGVLKVGDVILGVNGENVSSPEDLQIEVVKS-DGNIQFTIAPQGDDA 90
+I ++ GS K G LK GD IL +NG+ + S EDL V ++ + T+ G+
Sbjct: 15 VIGEVVPGSPAAKAG-LKAGDRILAINGQKIKSWEDLVDAVQENPGKPLTLTVERNGETI 73
Query: 91 SLPIKP 96
+L + P
Sbjct: 74 TLTLTP 79
>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 = 42.8 bits (102), Expect = 6e-06
Identities = 19/63 (30%), Positives = 30/63 (47%), Gaps = 10/63 (15%)
Query: 99 YMRCLFTYDPKEDSLLPCKEIGLAFNHGDILQILNQKDPNWWQAQLIEPTGPMGLVPSQE 158
Y R +F Y L+ GD++++L++ D WW+ + G GLVPS
Sbjct: 1 YGRVIFDYVA-------TDPNELSLKKGDVVKVLDKDDNGWWEGER---GGRRGLVPSSY 50
Query: 159 LEE 161
+EE
Sbjct: 51 VEE 53
>gnl|CDD|215659 pfam00018, SH3_1, SH3 domain. SH3 (Src homology 3) domains are
often indicative of a protein involved in signal
transduction related to cytoskeletal organisation. First
described in the Src cytoplasmic tyrosine kinase. The
structure is a partly opened beta barrel.
Length = 47
Score = 41.8 bits (99), Expect = 1e-05
Identities = 19/54 (35%), Positives = 28/54 (51%), Gaps = 9/54 (16%)
Query: 103 LFTYDPKEDSLLPCKEIGLAFNHGDILQILNQKDPNWWQAQLIEPTGPMGLVPS 156
L+ Y +E E L+F GDI+ +L + D WW+ +L G GL+PS
Sbjct: 3 LYDYTAREPD-----E--LSFKKGDIIIVLEKSDDGWWKGRLK--GGKEGLIPS 47
>gnl|CDD|212928 cd11995, SH3_Intersectin1_5, Fifth Src homology 3 domain (or SH3E)
of Intersectin-1. Intersectin-1 (ITSN1) is an adaptor
protein that functions in exo- and endocytosis, actin
cytoskeletal reorganization, and signal transduction. It
plays a role in clathrin-coated pit (CCP) formation. It
binds to many proteins through its multidomain structure
and facilitate the assembly of multimeric complexes.
ITSN1 localizes in membranous organelles, CCPs, the
Golgi complex, and may be involved in the cell membrane
trafficking system. It exists in alternatively spliced
short and long isoforms. The short isoform contains two
Eps15 homology domains (EH1 and EH2), a coiled-coil
region and five SH3 domains (SH3A-E), while the long
isoform, in addition, contains RhoGEF (also called
Dbl-homologous or DH), Pleckstrin homology (PH) and C2
domains. The fifth SH3 domain (or SH3E) of ITSN1 has
been shown to bind many protein partners including
SGIP1, Sos1, dynamin1/2, CIN85, c-Cbl, SHIP2, N-WASP,
and synaptojanin-1, among others. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 54
Score = 41.5 bits (97), Expect = 2e-05
Identities = 17/36 (47%), Positives = 26/36 (72%), Gaps = 3/36 (8%)
Query: 121 LAFNHGDILQILNQKDPNWWQAQLIEPTGPMGLVPS 156
LAF+ G I+ +LN++DP+WW+ +L G +GL PS
Sbjct: 17 LAFSKGQIINVLNKEDPDWWKGEL---NGQVGLFPS 49
>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 = 41.2 bits (97), Expect = 3e-05
Identities = 17/37 (45%), Positives = 25/37 (67%), Gaps = 4/37 (10%)
Query: 121 LAFNHGDILQILN-QKDPNWWQAQLIEPTGPMGLVPS 156
L+F G IL++LN + DPNW++A+L G GL+P
Sbjct: 16 LSFKKGSILKVLNMEDDPNWYKAEL---DGKEGLIPK 49
>gnl|CDD|238488 cd00988, PDZ_CTP_protease, PDZ domain of C-terminal processing-,
tail-specific-, and tricorn proteases, which function
in posttranslational protein processing, maturation,
and disassembly or degradation, in Bacteria, Archaea,
and plant chloroplasts. May be responsible for
substrate recognition and/or binding, as most PDZ
domains bind C-terminal polypeptides, and binding to
internal (non-C-terminal) polypeptides and even to
lipids has been demonstrated. In this subfamily of
protease-associated PDZ domains a C-terminal
beta-strand forms the peptide-binding groove base, a
circular permutation with respect to PDZ domains found
in Eumetazoan signaling proteins.
Length = 85
Score = 41.8 bits (99), Expect = 4e-05
Identities = 18/45 (40%), Positives = 28/45 (62%), Gaps = 2/45 (4%)
Query: 20 GLTVEQDANGNLIIARILAGSLIDKQGVLKVGDVILGVNGENVSS 64
GL ++ D +G L+I +L GS K G +K GD+I+ ++GE V
Sbjct: 5 GLELKYD-DGGLVITSVLPGSPAAKAG-IKAGDIIVAIDGEPVDG 47
>gnl|CDD|233695 TIGR02037, degP_htrA_DO, periplasmic serine protease, Do/DeqQ
family. This family consists of a set proteins various
designated DegP, heat shock protein HtrA, and protease
DO. The ortholog in Pseudomonas aeruginosa is designated
MucD and is found in an operon that controls mucoid
phenotype. This family also includes the DegQ (HhoA)
paralog in E. coli which can rescue a DegP mutant, but
not the smaller DegS paralog, which cannot. Members of
this family are located in the periplasm and have
separable functions as both protease and chaperone.
Members have a trypsin domain and two copies of a PDZ
domain. This protein protects bacteria from thermal and
other stresses and may be important for the survival of
bacterial pathogens.// The chaperone function is
dominant at low temperatures, whereas the proteolytic
activity is turned on at elevated temperatures [Protein
fate, Protein folding and stabilization, Protein fate,
Degradation of proteins, peptides, and glycopeptides].
Length = 428
Score = 44.1 bits (105), Expect = 1e-04
Identities = 19/41 (46%), Positives = 28/41 (68%), Gaps = 1/41 (2%)
Query: 32 IIARILAGSLIDKQGVLKVGDVILGVNGENVSSPEDLQIEV 72
++A++L GS +K G LK GDVI VNG+ +SS DL+ +
Sbjct: 260 LVAQVLPGSPAEKAG-LKAGDVITSVNGKPISSFADLRRAI 299
Score = 35.3 bits (82), Expect = 0.053
Identities = 23/78 (29%), Positives = 38/78 (48%), Gaps = 10/78 (12%)
Query: 15 GLSPCGLTVEQDANGNL-------IIARILAGSLIDKQGVLKVGDVILGVNGENVSSPED 67
GL+ L+ E L ++ ++++GS + G L+ GDVIL VN + VSS +
Sbjct: 341 GLTVANLSPEIRKELRLKGDVKGVVVTKVVSGSPAARAG-LQPGDVILSVNQQPVSSVAE 399
Query: 68 LQ--IEVVKSDGNIQFTI 83
L+ + K G + I
Sbjct: 400 LRKVLARAKKGGRVALLI 417
>gnl|CDD|212897 cd11964, SH3_STAM1, Src homology 3 domain of Signal Transducing
Adaptor Molecule 1. STAM1 is part of the endosomal
sorting complex required for transport (ESCRT-0) and is
involved in sorting ubiquitinated cargo proteins from
the endosome. It may also be involved in the regulation
of IL2 and GM-CSF mediated signaling, and has been
implicated in neural cell survival. STAMs were
discovered as proteins that are highly phosphorylated
following cytokine and growth factor stimulation. They
function in cytokine signaling and surface receptor
degradation, as well as regulate Golgi morphology. They
associate with many proteins including Jak2 and Jak3
tyrosine kinases, Hrs, AMSH, and UBPY. STAM adaptor
proteins contain VHS (Vps27, Hrs, STAM homology),
ubiquitin interacting (UIM), and SH3 domains. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 55
Score = 39.5 bits (92), Expect = 1e-04
Identities = 20/57 (35%), Positives = 31/57 (54%), Gaps = 10/57 (17%)
Query: 100 MRCLFTYDPKEDSLLPCKEIGLAFNHGDILQILNQKDPNWWQAQLIEPTGPMGLVPS 156
+R ++ ++ ED+ L F GDI+ IL+ DPNWW+ + + T GL PS
Sbjct: 3 VRAIYDFEAAEDN-------ELTFKAGDIITILDDSDPNWWKGETPQGT---GLFPS 49
>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 = 38.9 bits (91), Expect = 1e-04
Identities = 17/41 (41%), Positives = 26/41 (63%), Gaps = 3/41 (7%)
Query: 121 LAFNHGDILQILNQKDPNWWQAQLIEPTGPMGLVPSQELEE 161
L+F GDI+ +L++ DP+WW+ +L G GL PS +E
Sbjct: 16 LSFQKGDIINVLSKDDPDWWRGEL---NGQTGLFPSNYVEP 53
>gnl|CDD|212754 cd11820, SH3_STAM, Src homology 3 domain of Signal Transducing
Adaptor Molecules. STAMs were discovered as proteins
that are highly phosphorylated following cytokine and
growth factor stimulation. They function in cytokine
signaling and surface receptor degradation, as well as
regulate Golgi morphology. They associate with many
proteins including Jak2 and Jak3 tyrosine kinases, Hrs,
AMSH, and UBPY. STAM adaptor proteins contain VHS
(Vps27, Hrs, STAM homology), ubiquitin interacting
(UIM), and SH3 domains. There are two vertebrate STAMs,
STAM1 and STAM2, which may be functionally redundant;
vertebrate STAMs contain ITAM motifs. They are part of
the endosomal sorting complex required for transport
(ESCRT-0). STAM2 deficiency in mice did not cause any
obvious abnormality, while STAM1 deficiency resulted in
growth retardation. Loss of both STAM1 and STAM2 in mice
proved lethal, indicating that STAMs are important for
embryonic development. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 54
Score = 39.0 bits (91), Expect = 1e-04
Identities = 17/57 (29%), Positives = 27/57 (47%), Gaps = 10/57 (17%)
Query: 101 RCLFTYDPKEDSLLPCKEIGLAFNHGDILQILNQKDPNWWQAQLIEPTGPMGLVPSQ 157
R L+ ++ ED+ L F G+I+ +L+ DPNWW+ GL P+
Sbjct: 4 RALYDFEAAEDN-------ELTFKAGEIITVLDDSDPNWWKG---SNHRGEGLFPAN 50
>gnl|CDD|212884 cd11951, SH3_GRAP_C, C-terminal Src homology 3 domain of
GRB2-related adaptor protein. GRAP is a GRB-2 like
adaptor protein that is highly expressed in lymphoid
tissues. It acts as a negative regulator of T cell
receptor (TCR)-induced lymphocyte proliferation by
downregulating the signaling to the Ras/ERK pathway. It
has been identified as a regulator of TGFbeta signaling
in diabetic kidney tubules and may have a role in the
pathogenesis of the disease. GRAP contains an N-terminal
SH3 domain, a central SH2 domain, and a C-terminal SH3
domain. The C-terminal SH3 domains (SH3c) of the related
proteins, GRB2 and GRAP2, have been shown to bind to
classical PxxP motif ligands, as well as to
non-classical motifs. GRB2 SH3c binds Gab2
(Grb2-associated binder 2) through epitopes containing
RxxK motifs, while the SH3c of GRAP2 binds to the
phosphatase-like protein HD-PTP via a RxxxxK motif. SH3
domains are protein interaction domains that typically
bind to proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 53
Score = 38.6 bits (90), Expect = 2e-04
Identities = 14/36 (38%), Positives = 24/36 (66%), Gaps = 3/36 (8%)
Query: 120 GLAFNHGDILQILNQKDPNWWQAQLIEPTGPMGLVP 155
L+F GDI+++L+ DPNWW+ ++ +G +G P
Sbjct: 15 QLSFRRGDIIEVLDCPDPNWWRGRI---SGRVGFFP 47
>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 = 38.4 bits (90), Expect = 3e-04
Identities = 16/36 (44%), Positives = 22/36 (61%), Gaps = 3/36 (8%)
Query: 121 LAFNHGDILQILN-QKDPNWWQAQLIEPTGPMGLVP 155
L F GDIL I+ KDPNW++A+ G G++P
Sbjct: 18 LPFKKGDILTIVAVTKDPNWYKAK--NKDGREGMIP 51
>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 = 38.4 bits (89), Expect = 3e-04
Identities = 15/36 (41%), Positives = 24/36 (66%), Gaps = 3/36 (8%)
Query: 121 LAFNHGDILQILNQKDPNWWQAQLIEPTGPMGLVPS 156
L+F+ G ++ +LN+ DP+WWQ ++ G GL PS
Sbjct: 17 LSFSKGQLINVLNKDDPDWWQGEI---NGVTGLFPS 49
>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 = 37.7 bits (88), Expect = 4e-04
Identities = 15/57 (26%), Positives = 24/57 (42%), Gaps = 10/57 (17%)
Query: 99 YMRCLFTYDPKEDSLLPCKEIGLAFNHGDILQILNQKDPNWWQAQLIEPTGPMGLVP 155
+ L+ Y+ KE L+F GDI+ + + D NW+ + G G P
Sbjct: 1 CAKALYNYEGKEPG-------DLSFKKGDIILLRKRIDENWYHGEC---NGKQGFFP 47
>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 = 37.5 bits (87), Expect = 5e-04
Identities = 14/36 (38%), Positives = 25/36 (69%), Gaps = 3/36 (8%)
Query: 121 LAFNHGDILQILNQKDPNWWQAQLIEPTGPMGLVPS 156
L FN GD++++L+ +P+WW+ +L G +GL P+
Sbjct: 16 LGFNSGDVIEVLDSSNPSWWKGRL---HGKLGLFPA 48
>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 = 37.4 bits (87), Expect = 7e-04
Identities = 25/63 (39%), Positives = 35/63 (55%), Gaps = 4/63 (6%)
Query: 100 MRCLFTYDPKEDSLLPCKEIGLAFNHGDILQILNQKDPN-WWQAQLIEPTGPMGLVPSQE 158
M LF YDP+E S E+ L+F GDI+ + + D + ++ +L G GLVPS
Sbjct: 2 MVALFDYDPRESSPNVDAEVELSFRAGDIITVFGEMDEDGFYYGEL---NGQRGLVPSNF 58
Query: 159 LEE 161
LEE
Sbjct: 59 LEE 61
>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 = 36.9 bits (86), Expect = 8e-04
Identities = 18/64 (28%), Positives = 30/64 (46%), Gaps = 11/64 (17%)
Query: 100 MRCLFTYDPKEDSLLPCKEIGLAFNHGDILQILNQ--KDPNWWQAQLIEPTGPMGLVPSQ 157
+ L+ + + D L F G+ L+I+ + DP+WW+A+ G GLVP
Sbjct: 2 VVALYPFTGENDEELS-------FEKGERLEIIEKPEDDPDWWKARNAL--GTTGLVPRN 52
Query: 158 ELEE 161
+E
Sbjct: 53 YVEV 56
>gnl|CDD|212940 cd12007, SH3_Yes, Src homology 3 domain of Yes Protein Tyrosine
Kinase. Yes (or c-Yes) is a member of the Src subfamily
of proteins, which are cytoplasmic (or non-receptor)
PTKs. c-Yes kinase is the cellular homolog of the
oncogenic protein (v-Yes) encoded by the Yamaguchi 73
and Esh sarcoma viruses. It displays functional overlap
with other Src subfamily members, particularly Src. It
also shows some unique functions such as binding to
occludins, transmembrane proteins that regulate
extracellular interactions in tight junctions. Yes also
associates with a number of proteins in different cell
types that Src does not interact with, like JAK2 and
gp130 in pre-adipocytes, and Pyk2 in treated pulmonary
vein endothelial cells. Although the biological function
of Yes remains unclear, it appears to have a role in
regulating cell-cell interactions and vesicle
trafficking in polarized cells. Src kinases contain an
N-terminal SH4 domain with a myristoylation site,
followed by SH3 and SH2 domains, a tyr kinase domain,
and a regulatory C-terminal region containing a
conserved tyr. They are activated by autophosphorylation
at the tyr kinase domain, but are negatively regulated
by phosphorylation at the C-terminal tyr by Csk
(C-terminal Src Kinase). The SH3 domain of Src kinases
contributes to substrate recruitment by binding adaptor
proteins/substrates, and regulation of kinase activity
through an intramolecular interaction. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 58
Score = 36.9 bits (85), Expect = 0.001
Identities = 15/36 (41%), Positives = 23/36 (63%), Gaps = 1/36 (2%)
Query: 121 LAFNHGDILQILNQKDPNWWQAQLIEPTGPMGLVPS 156
L+F G+ QI+N + +WW+A+ I TG G +PS
Sbjct: 17 LSFKKGERFQIINNTEGDWWEARSIA-TGKNGYIPS 51
>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 = 36.6 bits (85), Expect = 0.001
Identities = 17/60 (28%), Positives = 27/60 (45%), Gaps = 10/60 (16%)
Query: 101 RCLFTYDPKEDSLLPCKEIGLAFNHGDILQILNQKDPNWWQAQLIEPTGPMGLVPSQELE 160
L+ Y +ED L + GD++ ++ + + WW +E G GLVP LE
Sbjct: 3 SVLYDYTAQEDDELS-------ISKGDVVAVIEKGEDGWW---TVERNGQKGLVPGTYLE 52
>gnl|CDD|223343 COG0265, DegQ, Trypsin-like serine proteases, typically
periplasmic, contain C-terminal PDZ domain
[Posttranslational modification, protein turnover,
chaperones].
Length = 347
Score = 40.3 bits (94), Expect = 0.001
Identities = 23/77 (29%), Positives = 34/77 (44%), Gaps = 8/77 (10%)
Query: 3 HPPHPLKKILGTGLSP---CGLTVEQDANGNLIIARILAGSLIDKQGVLKVGDVILGVNG 59
++G L+ GL V A ++ +L GS K G +K GD+I VNG
Sbjct: 245 KVVRGYLGVIGEPLTADIALGLPVAAGA----VVLGVLPGSPAAKAG-IKAGDIITAVNG 299
Query: 60 ENVSSPEDLQIEVVKSD 76
+ V+S DL V +
Sbjct: 300 KPVASLSDLVAAVASNR 316
>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 = 36.1 bits (83), Expect = 0.002
Identities = 19/57 (33%), Positives = 30/57 (52%), Gaps = 10/57 (17%)
Query: 100 MRCLFTYDPKEDSLLPCKEIGLAFNHGDILQILNQKDPNWWQAQLIEPTGPMGLVPS 156
+R L+ ++ ED+ L F HG+I+ +L+ D NWW+ E +GL PS
Sbjct: 4 VRALYDFEAVEDN-------ELTFKHGEIIIVLDDSDANWWKG---ENHRGVGLFPS 50
>gnl|CDD|212881 cd11948, SH3_GRAP_N, N-terminal Src homology 3 domain of
GRB2-related adaptor protein. GRAP is a GRB-2 like
adaptor protein that is highly expressed in lymphoid
tissues. It acts as a negative regulator of T cell
receptor (TCR)-induced lymphocyte proliferation by
downregulating the signaling to the Ras/ERK pathway. It
has been identified as a regulator of TGFbeta signaling
in diabetic kidney tubules and may have a role in the
pathogenesis of the disease. GRAP contains an N-terminal
SH3 domain, a central SH2 domain, and a C-terminal SH3
domain. The N-terminal SH3 domain of the related protein
GRB2 binds to Sos and Sos-derived proline-rich peptides.
SH3 domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 54
Score = 35.9 bits (83), Expect = 0.002
Identities = 17/36 (47%), Positives = 23/36 (63%), Gaps = 4/36 (11%)
Query: 121 LAFNHGDILQILN-QKDPNWWQAQLIEPTGPMGLVP 155
L F GDIL+ILN + D NW++A+L G G +P
Sbjct: 16 LPFQKGDILKILNMEDDQNWYKAELQ---GREGYIP 48
>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 = 35.9 bits (83), Expect = 0.002
Identities = 20/62 (32%), Positives = 31/62 (50%), Gaps = 12/62 (19%)
Query: 101 RCLFTYDPKE-DSLLPCKEIGLAFNHGDILQILNQKDPNWWQAQLIEPTGPMGLVPSQEL 159
+ L+ YD ++ D L +FN GDI++IL + WW +L G GL P +
Sbjct: 3 KALYAYDAQDTDEL--------SFNEGDIIEILKEDPSGWWTGRL---RGKEGLFPGNYV 51
Query: 160 EE 161
E+
Sbjct: 52 EK 53
>gnl|CDD|221961 pfam13180, PDZ_2, PDZ domain.
Length = 81
Score = 36.5 bits (85), Expect = 0.002
Identities = 24/79 (30%), Positives = 42/79 (53%), Gaps = 5/79 (6%)
Query: 20 GLTVEQDANGNLIIARILAGSLIDKQGVLKVGDVILGVNGENVSSPEDLQIEVV---KSD 76
G+ V Q+ + + + GS K G LK GD+IL ++G+ V+S +L IEV+ K
Sbjct: 4 GVRVVQNEGTGVTVVSVKEGSPAAKAG-LKPGDIILSIDGKKVNSLTEL-IEVILNGKPG 61
Query: 77 GNIQFTIAPQGDDASLPIK 95
++ T+ G ++ +K
Sbjct: 62 DTVKLTVYRDGKKKTVEVK 80
>gnl|CDD|212941 cd12008, SH3_Src, Src homology 3 domain of Src Protein Tyrosine
Kinase. Src (or c-Src) is a cytoplasmic (or
non-receptor) PTK and is the vertebrate homolog of the
oncogenic protein (v-Src) from Rous sarcoma virus.
Together with other Src subfamily proteins, it is
involved in signaling pathways that regulate cytokine
and growth factor responses, cytoskeleton dynamics, cell
proliferation, survival, and differentiation. Src also
play a role in regulating cell adhesion, invasion, and
motility in cancer cells, and tumor vasculature,
contributing to cancer progression and metastasis.
Elevated levels of Src kinase activity have been
reported in a variety of human cancers. Several
inhibitors of Src have been developed as anti-cancer
drugs. Src is also implicated in acute inflammatory
responses and osteoclast function. Src kinases contain
an N-terminal SH4 domain with a myristoylation site,
followed by SH3 and SH2 domains, a tyr kinase domain,
and a regulatory C-terminal region containing a
conserved tyr. They are activated by autophosphorylation
at the tyr kinase domain, but are negatively regulated
by phosphorylation at the C-terminal tyr by Csk
(C-terminal Src Kinase). The SH3 domain of Src kinases
contributes to substrate recruitment by binding adaptor
proteins/substrates, and regulation of kinase activity
through an intramolecular interaction. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 56
Score = 35.9 bits (82), Expect = 0.002
Identities = 16/39 (41%), Positives = 23/39 (58%), Gaps = 1/39 (2%)
Query: 118 EIGLAFNHGDILQILNQKDPNWWQAQLIEPTGPMGLVPS 156
E L+F G+ LQI+N + +WW A + TG G +PS
Sbjct: 13 ETDLSFKKGERLQIVNNTEGDWWLAHSLT-TGQTGYIPS 50
>gnl|CDD|212707 cd11773, SH3_Sla1p_1, First Src Homology 3 domain of the fungal
endocytic adaptor protein Sla1p. Sla1p facilitates
endocytosis by playing a role as an adaptor protein in
coupling components of the actin cytoskeleton to the
endocytic machinery. It interacts with Abp1p, Las17p and
Pan1p, which are activator proteins of actin-related
protein 2/3 (Arp2/3). Sla1p contains multiple domains
including three SH3 domains, a SAM (sterile alpha motif)
domain, and a Sla1 homology domain 1 (SHD1), which binds
to the NPFXD motif that is found in many integral
membrane proteins such as the Golgi-localized
Arf-binding protein Lsb5p and the P4-ATPases, Drs2p and
Dnf1p. SH3 domains are protein interaction domains that
bind to proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 57
Score = 35.9 bits (83), Expect = 0.002
Identities = 18/60 (30%), Positives = 32/60 (53%), Gaps = 11/60 (18%)
Query: 101 RCLFTYDPKEDSLLPCKEIGLAFNHGDILQILNQKDPNWWQAQLIEPT----GPMGLVPS 156
+ L+ Y+P+ + L +E DIL +L + D +WW+ +L + P+GLVP+
Sbjct: 3 KALYDYEPQTEDELTIQE-------DDILYLLEKSDDDWWKVKLKVNSSDDDEPVGLVPA 55
>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 = 35.7 bits (83), Expect = 0.002
Identities = 14/46 (30%), Positives = 26/46 (56%), Gaps = 7/46 (15%)
Query: 99 YMRCLFTYDPKEDSLLPCKEIGLAFNHGDILQILNQKDPNWWQAQL 144
++ L+ ++P+E L F GDI+ +L+ DP+WW+ +L
Sbjct: 1 RVQALYDFNPQEPG-------ELEFRRGDIITVLDSSDPDWWKGEL 39
>gnl|CDD|212816 cd11883, SH3_Sdc25, Src Homology 3 domain of Sdc25/Cdc25 guanine
nucleotide exchange factors. This subfamily is composed
of the Saccharomyces cerevisiae guanine nucleotide
exchange factors (GEFs) Sdc25 and Cdc25, and similar
proteins. These GEFs regulate Ras by stimulating the
GDP/GTP exchange on Ras. Cdc25 is involved in the
Ras/PKA pathway that plays an important role in the
regulation of metabolism, stress responses, and
proliferation, depending on available nutrients and
conditions. Proteins in this subfamily contain an
N-terminal SH3 domain as well as REM (Ras exchanger
motif) and RasGEF domains at the C-terminus. SH3 domains
bind to proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs; they play a
role in the regulation of enzymes by intramolecular
interactions, changing the subcellular localization of
signal pathway components and mediate multiprotein
complex assemblies.
Length = 55
Score = 35.7 bits (83), Expect = 0.003
Identities = 14/49 (28%), Positives = 22/49 (44%), Gaps = 7/49 (14%)
Query: 101 RCLFTYDPKEDSLLPCKEIGLAFNHGDILQILNQKDPNWWQAQLIEPTG 149
L+ + PK + L F GDI+ +LN+ WW +I +G
Sbjct: 3 VALYDFTPKSKNQLS-------FKAGDIIYVLNKDPSGWWDGVIISSSG 44
>gnl|CDD|223864 COG0793, Prc, Periplasmic protease [Cell envelope biogenesis, outer
membrane].
Length = 406
Score = 39.6 bits (93), Expect = 0.003
Identities = 13/44 (29%), Positives = 26/44 (59%), Gaps = 1/44 (2%)
Query: 20 GLTVEQDANGNLIIARILAGSLIDKQGVLKVGDVILGVNGENVS 63
G+ ++ + G + + + GS K G +K GDVI+ ++G++V
Sbjct: 103 GIELQMEDIGGVKVVSPIDGSPAAKAG-IKPGDVIIKIDGKSVG 145
>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 = 35.4 bits (81), Expect = 0.003
Identities = 17/41 (41%), Positives = 27/41 (65%), Gaps = 4/41 (9%)
Query: 121 LAFNHGDILQILNQK-DPNWWQAQLIEPTGPMGLVPSQELE 160
L+F GDIL++LN++ D NW++A+L G G +P +E
Sbjct: 17 LSFKRGDILKVLNEECDQNWYKAEL---NGKDGFIPKNYIE 54
>gnl|CDD|212939 cd12006, SH3_Fyn_Yrk, Src homology 3 domain of Fyn and Yrk Protein
Tyrosine Kinases. Fyn and Yrk (Yes-related kinase) are
members of the Src subfamily of proteins, which are
cytoplasmic (or non-receptor) PTKs. Fyn, together with
Lck, plays a critical role in T-cell signal transduction
by phosphorylating ITAM (immunoreceptor tyr activation
motif) sequences on T-cell receptors, ultimately leading
to the proliferation and differentiation of T-cells. In
addition, Fyn is involved in the myelination of neurons,
and is implicated in Alzheimer's and Parkinson's
diseases. Yrk has been detected only in chickens. It is
primarily found in neuronal and epithelial cells and in
macrophages. It may play a role in inflammation and in
response to injury. Src kinases contain an N-terminal
SH4 domain with a myristoylation site, followed by SH3
and SH2 domains, a tyr kinase domain, and a regulatory
C-terminal region containing a conserved tyr. They are
activated by autophosphorylation at the tyr kinase
domain, but are negatively regulated by phosphorylation
at the C-terminal tyr by Csk (C-terminal Src Kinase).
The SH3 domain of Src kinases contributes to substrate
recruitment by binding adaptor proteins/substrates, and
regulation of kinase activity through an intramolecular
interaction. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate affinity
and selectivity, preferentially to PxxP motifs. They
play versatile and diverse roles in the cell including
the regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 56
Score = 35.4 bits (81), Expect = 0.004
Identities = 16/39 (41%), Positives = 25/39 (64%), Gaps = 1/39 (2%)
Query: 118 EIGLAFNHGDILQILNQKDPNWWQAQLIEPTGPMGLVPS 156
E L+F+ G+ QILN + +WW+A+ + TG G +PS
Sbjct: 14 EDDLSFHKGEKFQILNSSEGDWWEARSLT-TGETGYIPS 51
>gnl|CDD|212938 cd12005, SH3_Lck, Src homology 3 domain of Lck Protein Tyrosine
Kinase. Lck is a member of the Src subfamily of
proteins, which are cytoplasmic (or non-receptor) PTKs.
Lck is expressed in T-cells and natural killer cells. It
plays a critical role in T-cell maturation, activation,
and T-cell receptor (TCR) signaling. Lck phosphorylates
ITAM (immunoreceptor tyr activation motif) sequences on
several subunits of TCRs, leading to the activation of
different second messenger cascades. Phosphorylated
ITAMs serve as binding sites for other signaling factor
such as Syk and ZAP-70, leading to their activation and
propagation of downstream events. In addition, Lck
regulates drug-induced apoptosis by interfering with the
mitochondrial death pathway. The apototic role of Lck is
independent of its primary function in T-cell signaling.
Src kinases contain an N-terminal SH4 domain with a
myristoylation site, followed by SH3 and SH2 domains, a
tyr kinase domain, and a regulatory C-terminal region
containing a conserved tyr. They are activated by
autophosphorylation at the tyr kinase domain, but are
negatively regulated by phosphorylation at the
C-terminal tyr by Csk (C-terminal Src Kinase). The SH3
domain of Src kinases contributes to substrate
recruitment by binding adaptor proteins/substrates, and
regulation of kinase activity through an intramolecular
interaction. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate affinity
and selectivity, preferentially to PxxP motifs. They
play versatile and diverse roles in the cell including
the regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 54
Score = 34.8 bits (80), Expect = 0.005
Identities = 19/53 (35%), Positives = 27/53 (50%), Gaps = 9/53 (16%)
Query: 103 LFTYDPKEDSLLPCKEIGLAFNHGDILQILNQKDPNWWQAQLIEPTGPMGLVP 155
L++Y+P D L F G+ L+IL Q WW+AQ + TG G +P
Sbjct: 5 LYSYEPSHDG-------DLGFEKGEKLRILEQ-SGEWWKAQSLT-TGQEGFIP 48
>gnl|CDD|212974 cd12041, SH3_CACNB1, Src Homology 3 domain of Voltage-dependent
L-type calcium channel subunit beta-1. The beta1
subunit of voltage-dependent calcium channels (Ca(V)s)
is one of four beta subunits present in vertebrates. It
is the only beta subunit, as the beta1a variant,
expressed in skeletal muscle; the beta1b variant is also
widely expressed in other tissues including the heart
and brain. Knockout of the beta1 gene in mice results in
embryonic lethality, demonstrating its importance in
development. Ca(V)s are multi-protein complexes that
regulate the entry of calcium into cells. They impact
muscle contraction, neuronal migration, hormone and
neurotransmitter release, and the activation of
calcium-dependent signaling pathways. They are composed
of four subunits: alpha1, alpha2delta, beta, and gamma.
The beta subunit is a soluble and intracellular protein
that interacts with the transmembrane alpha1 subunit. It
facilitates the trafficking and proper localization of
the alpha1 subunit to the cellular plasma membrane.
Vertebrates contain four different beta subunits from
distinct genes (beta1-4); each exists as multiple splice
variants. All are expressed in the brain while other
tissues show more specific expression patterns. The beta
subunits show similarity to MAGUK (membrane-associated
guanylate kinase) proteins in that they contain SH3 and
inactive guanylate kinase (GuK) domains; however, they
do not appear to contain a PDZ domain. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 68
Score = 35.0 bits (80), Expect = 0.006
Identities = 17/63 (26%), Positives = 33/63 (52%), Gaps = 1/63 (1%)
Query: 95 KPVCY-MRCLFTYDPKEDSLLPCKEIGLAFNHGDILQILNQKDPNWWQAQLIEPTGPMGL 153
KPV + +R Y+P +P + + ++F D L I + + +WW +L++ +G
Sbjct: 1 KPVAFAVRTNVGYNPSPGDDVPVQGMAISFEPKDFLHIKEKYNNDWWIGRLVKEGCEVGF 60
Query: 154 VPS 156
+PS
Sbjct: 61 IPS 63
>gnl|CDD|238490 cd00990, PDZ_glycyl_aminopeptidase, PDZ domain associated with
archaeal and bacterial M61 glycyl-aminopeptidases. May
be responsible for substrate recognition and/or
binding, as most PDZ domains bind C-terminal
polypeptides, and binding to internal (non-C-terminal)
polypeptides and even to lipids has been demonstrated.
In this subfamily of protease-associated PDZ domains a
C-terminal beta-strand is presumed to form the
peptide-binding groove base, a circular permutation
with respect to PDZ domains found in Eumetazoan
signaling proteins.
Length = 80
Score = 35.1 bits (81), Expect = 0.006
Identities = 20/78 (25%), Positives = 35/78 (44%), Gaps = 3/78 (3%)
Query: 19 CGLTVEQDANGNLIIARILAGSLIDKQGVLKVGDVILGVNGENVSSPEDLQIEVVKSDGN 78
GLT++++ G + + S DK G L GD ++ VNG V + +D E D
Sbjct: 3 LGLTLDKEE-GLGKVTFVRDDSPADKAG-LVAGDELVAVNGWRVDALQDRLKEYQAGD-P 59
Query: 79 IQFTIAPQGDDASLPIKP 96
++ T+ +P+
Sbjct: 60 VELTVFRDDRLIEVPLTL 77
>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 = 34.2 bits (79), Expect = 0.007
Identities = 14/41 (34%), Positives = 24/41 (58%), Gaps = 2/41 (4%)
Query: 121 LAFNHGDILQILNQKDPNWWQAQLIEPTGPMGLVPSQELEE 161
L+F G++L+I++++ WW A+ G GLVP L+
Sbjct: 16 LSFKKGEVLRIISKRADGWWLAE--NSKGNRGLVPKTYLKV 54
>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 = 34.3 bits (79), Expect = 0.008
Identities = 12/39 (30%), Positives = 19/39 (48%), Gaps = 10/39 (25%)
Query: 105 TYDPKEDSLLPCKEIGLAFNHGDILQILNQKDPNWWQAQ 143
T DP+E L F GD++++L+ D +WW
Sbjct: 10 TMDPEE----------LGFKAGDVIEVLDMSDKDWWWGS 38
>gnl|CDD|212692 cd11758, SH3_CRK_N, N-terminal Src Homology 3 domain of Ct10
Regulator of Kinase adaptor proteins. CRK adaptor
proteins consists of SH2 and SH3 domains, which bind
tyrosine-phosphorylated peptides and proline-rich
motifs, respectively. They function downstream of
protein tyrosine kinases in many signaling pathways
started by various extracellular signals, including
growth and differentiation factors. Cellular CRK (c-CRK)
contains a single SH2 domain, followed by N-terminal and
C-terminal SH3 domains. It is involved in the regulation
of many cellular processes including cell growth,
motility, adhesion, and apoptosis. CRK has been
implicated in the malignancy of various human cancers.
The N-terminal SH3 domain of CRK binds a number of
target proteins including DOCK180, C3G, SOS, and cABL.
The CRK family includes two alternatively spliced
protein forms, CRKI and CRKII, that are expressed by the
CRK gene, and the CRK-like (CRKL) protein, which is
expressed by a distinct gene (CRKL). SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 55
Score = 34.3 bits (79), Expect = 0.008
Identities = 17/57 (29%), Positives = 28/57 (49%), Gaps = 9/57 (15%)
Query: 99 YMRCLFTYDPKEDSLLPCKEIGLAFNHGDILQILNQKDPNWWQAQLIEPTGPMGLVP 155
Y+R LF + +D LP F G+IL ++ + + WW A+ G G++P
Sbjct: 2 YVRALFDFPGNDDEDLP-------FKKGEILTVIRKPEEQWWNAR--NSEGKTGMIP 49
>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 = 34.3 bits (78), Expect = 0.008
Identities = 11/41 (26%), Positives = 20/41 (48%), Gaps = 3/41 (7%)
Query: 121 LAFNHGDILQILNQKDPNWWQAQLIEPTGPMGLVPSQELEE 161
L+F+ GD++ + ++ WW+ G G PS + E
Sbjct: 16 LSFSKGDVIHVTRVEEGGWWEGTH---NGRTGWFPSNYVRE 53
>gnl|CDD|212797 cd11863, SH3_CACNB, Src Homology 3 domain of Voltage-dependent
L-type calcium channel subunit beta. Voltage-dependent
calcium channels (Ca(V)s) are multi-protein complexes
that regulate the entry of calcium into cells. They
impact muscle contraction, neuronal migration, hormone
and neurotransmitter release, and the activation of
calcium-dependent signaling pathways. They are composed
of four subunits: alpha1, alpha2delta, beta, and gamma.
The beta subunit is a soluble and intracellular protein
that interacts with the transmembrane alpha1 subunit. It
facilitates the trafficking and proper localization of
the alpha1 subunit to the cellular plasma membrane.
Vertebrates contain four different beta subunits from
distinct genes (beta1-4); each exists as multiple splice
variants. All are expressed in the brain while other
tissues show more specific expression patterns. The beta
subunits show similarity to MAGUK (membrane-associated
guanylate kinase) proteins in that they contain SH3 and
inactive guanylate kinase (GuK) domains; however, they
do not appear to contain a PDZ domain. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 62
Score = 34.2 bits (79), Expect = 0.009
Identities = 14/51 (27%), Positives = 24/51 (47%)
Query: 106 YDPKEDSLLPCKEIGLAFNHGDILQILNQKDPNWWQAQLIEPTGPMGLVPS 156
YD D P ++F D L I + + +WW +L++ +G +PS
Sbjct: 9 YDGSLDDDSPVPGYAVSFEAKDFLHIKEKYNNDWWIGRLVKEGCDIGFIPS 59
>gnl|CDD|212890 cd11957, SH3_RUSC2, Src homology 3 domain of RUN and SH3
domain-containing protein 2. RUSC2, also called Iporin
or Interacting protein of Rab1, is expressed
ubiquitously with highest amounts in the brain and
testis. It interacts with the small GTPase Rab1 and the
Golgi matrix protein GM130, and may function in linking
GTPases to certain intracellular signaling pathways.
RUSC proteins are adaptor proteins consisting of RUN,
leucine zipper, and SH3 domains. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 52
Score = 33.7 bits (77), Expect = 0.011
Identities = 18/36 (50%), Positives = 24/36 (66%), Gaps = 5/36 (13%)
Query: 121 LAFNHGDILQILNQKDPNWWQAQLIEPTGP-MGLVP 155
L+FN GDILQ+L++ D +W + L GP GLVP
Sbjct: 16 LSFNKGDILQVLSRADGDWLRCSL----GPDSGLVP 47
>gnl|CDD|212933 cd12000, SH3_CASS4, Src homology 3 domain of CAS (Crk-Associated
Substrate) scaffolding protein family member 4. CASS4,
also called HEPL (HEF1-EFS-p130Cas-like), localizes to
focal adhesions and plays a role in regulating FAK
activity, focal adhesion integrity, and cell spreading.
It is most abundant in blood cells and lung tissue, and
is also found in high levels in leukemia and ovarian
cell lines. CAS proteins function as molecular scaffolds
to regulate protein complexes that are involved in many
cellular processes. They share a common domain structure
that includes an N-terminal SH3 domain, an unstructured
substrate domain that contains many YxxP motifs, a
serine-rich four-helix bundle, and a FAT-like C-terminal
domain. The SH3 domain of CAS proteins binds to diverse
partners including FAK, FRNK, Pyk2, PTP-PEST, DOCK180,
among others. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP motifs.
They play versatile and diverse roles in the cell
including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 57
Score = 33.7 bits (77), Expect = 0.012
Identities = 18/43 (41%), Positives = 22/43 (51%), Gaps = 6/43 (13%)
Query: 121 LAFNHGDILQILNQKDPN---WWQAQLIEPTGPMGLVPSQELE 160
LAF GDIL +L Q P WW+ L G GL P+ L+
Sbjct: 17 LAFRRGDILTVLEQNVPGSEGWWKCLL---HGRQGLAPANRLQ 56
>gnl|CDD|212975 cd12042, SH3_CACNB3, Src Homology 3 domain of Voltage-dependent
L-type calcium channel subunit beta3. The beta3 subunit
of voltage-dependent calcium channels (Ca(V)s) is one of
four beta subunits present in vertebrates. It is the
main beta subunit present in smooth muscles and is
strongly expressed in the brain; it is predominant in
the olfactory bulb, cortex, and hippocampus. It may play
a role in regulating the NMDAR (N-methyl-d-aspartate
receptor) activity in the hippocampus and thus,
activity-dependent synaptic plasticity and cognitive
behaviors. Ca(V)s are multi-protein complexes that
regulate the entry of calcium into cells. They impact
muscle contraction, neuronal migration, hormone and
neurotransmitter release, and the activation of
calcium-dependent signaling pathways. They are composed
of four subunits: alpha1, alpha2delta, beta, and gamma.
The beta subunit is a soluble and intracellular protein
that interacts with the transmembrane alpha1 subunit. It
facilitates the trafficking and proper localization of
the alpha1 subunit to the cellular plasma membrane.
Vertebrates contain four different beta subunits from
distinct genes (beta1-4); each exists as multiple splice
variants. All are expressed in the brain while other
tissues show more specific expression patterns. The beta
subunits show similarity to MAGUK (membrane-associated
guanylate kinase) proteins in that they contain SH3 and
inactive guanylate kinase (GuK) domains; however, they
do not appear to contain a PDZ domain. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 68
Score = 33.8 bits (77), Expect = 0.014
Identities = 20/68 (29%), Positives = 32/68 (47%), Gaps = 2/68 (2%)
Query: 95 KPVCY-MRCLFTYDPKEDSLLPCKEIGLAFNHGDILQILNQKDPNWWQAQLIEPTGPMGL 153
KPV + +R +Y D P + + F D L I + +WW +L++ G +
Sbjct: 1 KPVAFAVRTNVSYCGALDEECPVQGAAINFEAKDFLHIKEKYSNDWWIGRLVKEGGDIAF 60
Query: 154 VPS-QELE 160
+PS Q LE
Sbjct: 61 IPSPQRLE 68
>gnl|CDD|212973 cd12040, SH3_CACNB2, Src Homology 3 domain of Voltage-dependent
L-type calcium channel subunit beta2. The beta2 subunit
of voltage-dependent calcium channels (Ca(V)s) is one of
four beta subunits present in vertebrates. It is
expressed in the heart and is present in specific
neuronal cells including cerebellar Purkinje cells,
hippocampal pyramidal neurons, and photoreceptors.
Knockout of the beta2 gene in mice results in embryonic
lethality, demonstrating its importance in development.
Ca(V)s are multi-protein complexes that regulate the
entry of calcium into cells. They impact muscle
contraction, neuronal migration, hormone and
neurotransmitter release, and the activation of
calcium-dependent signaling pathways. They are composed
of four subunits: alpha1, alpha2delta, beta, and gamma.
The beta subunit is a soluble and intracellular protein
that interacts with the transmembrane alpha1 subunit. It
facilitates the trafficking and proper localization of
the alpha1 subunit to the cellular plasma membrane.
Vertebrates contain four different beta subunits from
distinct genes (beta1-4); each exists as multiple splice
variants. All are expressed in the brain while other
tissues show more specific expression patterns. The beta
subunits show similarity to MAGUK (membrane-associated
guanylate kinase) proteins in that they contain SH3 and
inactive guanylate kinase (GuK) domains; however, they
do not appear to contain a PDZ domain. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 69
Score = 33.9 bits (77), Expect = 0.014
Identities = 15/63 (23%), Positives = 31/63 (49%), Gaps = 1/63 (1%)
Query: 95 KPVCY-MRCLFTYDPKEDSLLPCKEIGLAFNHGDILQILNQKDPNWWQAQLIEPTGPMGL 153
KPV + +R Y + +P + ++F D L + + + +WW +L++ +G
Sbjct: 2 KPVAFAVRTNVGYSAAHEDDVPVPGMAISFEAKDFLHVKEKFNNDWWIGRLVKEGCEIGF 61
Query: 154 VPS 156
+PS
Sbjct: 62 IPS 64
>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 = 33.8 bits (78), Expect = 0.014
Identities = 19/63 (30%), Positives = 34/63 (53%), Gaps = 3/63 (4%)
Query: 100 MRCLFTYDPKEDSLLPCKEIGLAFNHGDILQILNQKDPN-WWQAQLIEPTGPMGLVPSQE 158
M L+ Y+P+ S E L+F+ GD++++ D + ++ +L G GLVPS
Sbjct: 2 MVALYDYNPETMSPNDDPEEELSFHAGDVVRVYGPMDEDGFYYGELEG--GRKGLVPSNF 59
Query: 159 LEE 161
++E
Sbjct: 60 VQE 62
>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 = 33.0 bits (75), Expect = 0.024
Identities = 15/42 (35%), Positives = 25/42 (59%), Gaps = 4/42 (9%)
Query: 121 LAFNHGDILQILNQKDPN-WWQAQLIEPTGPMGLVPSQELEE 161
L+ GDI++ILN+K WW+ ++ G +G P+ +EE
Sbjct: 16 LSLKEGDIIKILNKKGQQGWWRGEIY---GRVGWFPANYVEE 54
>gnl|CDD|238486 cd00986, PDZ_LON_protease, PDZ domain of ATP-dependent LON serine
proteases. Most PDZ domains bind C-terminal
polypeptides, though binding to internal
(non-C-terminal) polypeptides and even to lipids has
been demonstrated. In this bacterial subfamily of
protease-associated PDZ domains a C-terminal
beta-strand is thought to form the peptide-binding
groove base, a circular permutation with respect to PDZ
domains found in Eumetazoan signaling proteins.
Length = 79
Score = 33.6 bits (77), Expect = 0.028
Identities = 12/64 (18%), Positives = 27/64 (42%), Gaps = 16/64 (25%)
Query: 36 ILAGSLID---KQGVLKVGDVILGVNGENVSSPEDL-------------QIEVVKSDGNI 79
+ S+++ G LK GD I+ V+G+ E+L +++V + + +
Sbjct: 10 VYVTSVVEGMPAAGKLKAGDHIIAVDGKPFKEAEELIDYIQSKKEGDTVKLKVKREEKEL 69
Query: 80 QFTI 83
+
Sbjct: 70 PEDL 73
>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 = 32.3 bits (74), Expect = 0.032
Identities = 12/49 (24%), Positives = 26/49 (53%), Gaps = 4/49 (8%)
Query: 101 RCLFTYDPKEDSLLPCKEIGLAFNHGDILQILNQKDPNWWQAQLIEPTG 149
+ L+ ++ K++ C L F GD++ ++ + D NW + +L + G
Sbjct: 3 KALYDFEMKDEDEKDC----LTFKKGDVITVIRRVDENWAEGRLGDKIG 47
>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 = 32.8 bits (75), Expect = 0.033
Identities = 19/67 (28%), Positives = 32/67 (47%), Gaps = 14/67 (20%)
Query: 99 YMRCLFTYDPKEDSLLPCKEIGLAFNHGDILQILNQK----DPNWWQAQLIEPTGPMGLV 154
+R L+ Y+ + D L+F G I++IL + D WW+ + G +G+
Sbjct: 1 LVRALYDYEAQSDE-------ELSFPEGAIIRILRKDDNGVDDGWWEGEF---NGRVGVF 50
Query: 155 PSQELEE 161
PS +EE
Sbjct: 51 PSLVVEE 57
>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 = 32.3 bits (74), Expect = 0.033
Identities = 18/59 (30%), Positives = 28/59 (47%), Gaps = 12/59 (20%)
Query: 99 YMRCLFTYDPKEDSLLPCKEIGLAFNHGDILQILNQK--DPNWWQAQLIEPTGPMGLVP 155
R LF Y+ + + L +E GDI+ IL++ D WW+ +L G G+ P
Sbjct: 1 KARVLFDYEAENEDELTLRE-------GDIVTILSKDCEDKGWWKGEL---NGKRGVFP 49
>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 = 32.3 bits (74), Expect = 0.037
Identities = 10/40 (25%), Positives = 21/40 (52%), Gaps = 2/40 (5%)
Query: 121 LAFNHGDILQILNQKDPNWWQAQLIEPTGPMGLVPSQELE 160
L+F+ G+ +L + + +WW +G G VP+ ++
Sbjct: 16 LSFSEGETFLLLERSNAHWWLV--TNHSGETGYVPANYVK 53
>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 = 32.3 bits (74), Expect = 0.040
Identities = 17/60 (28%), Positives = 25/60 (41%), Gaps = 9/60 (15%)
Query: 101 RCLFTYDPKEDSLLPCKEIGLAFNHGDILQILNQKDPNWWQAQLIEPTGPMGLVPSQELE 160
+ L+ Y ED+ + F GDI+ + Q D WW G GL P+ +E
Sbjct: 3 KALYDYQAAEDNEIS-------FVEGDIITQIEQIDEGWWLGVN--AKGQKGLFPANYVE 53
>gnl|CDD|212976 cd12043, SH3_CACNB4, Src Homology 3 domain of Voltage-dependent
L-type calcium channel subunit beta4. The beta4 subunit
of voltage-dependent calcium channels (Ca(V)s) is one of
four beta subunits present in vertebrates. It is the
only beta subunit expressed in the cochlea and is highly
expressed in the brain, predominantly in the cerebellum.
Ca(V)s are multi-protein complexes that regulate the
entry of calcium into cells. They impact muscle
contraction, neuronal migration, hormone and
neurotransmitter release, and the activation of
calcium-dependent signaling pathways. They are composed
of four subunits: alpha1, alpha2delta, beta, and gamma.
The beta subunit is a soluble and intracellular protein
that interacts with the transmembrane alpha1 subunit. It
facilitates the trafficking and proper localization of
the alpha1 subunit to the cellular plasma membrane.
Vertebrates contain four different beta subunits from
distinct genes (beta1-4); each exists as multiple splice
variants. All are expressed in the brain while other
tissues show more specific expression patterns. The beta
subunits show similarity to MAGUK (membrane-associated
guanylate kinase) proteins in that they contain SH3 and
inactive guanylate kinase (GuK) domains; however, they
do not appear to contain a PDZ domain. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 68
Score = 32.6 bits (74), Expect = 0.041
Identities = 19/68 (27%), Positives = 34/68 (50%), Gaps = 2/68 (2%)
Query: 95 KPVCY-MRCLFTYDPKEDSLLPCKEIGLAFNHGDILQILNQKDPNWWQAQLIEPTGPMGL 153
KPV + +R +Y D +P ++F+ D L I + + +WW +L++ +G
Sbjct: 1 KPVAFAVRTNVSYCGALDEDVPVPGTAISFDAKDFLHIKEKYNNDWWIGRLVKEGCEIGF 60
Query: 154 VPS-QELE 160
+PS LE
Sbjct: 61 IPSPLRLE 68
>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 = 31.9 bits (73), Expect = 0.056
Identities = 19/66 (28%), Positives = 32/66 (48%), Gaps = 13/66 (19%)
Query: 101 RCLFTYDPKEDSLLPCKEIGLAFNHGDILQILNQKDP-----NWWQAQLIEPTGPMGLVP 155
R L+ + P+ P E L+ GDI+ +L++ DP WW+ + + G +G P
Sbjct: 3 RALYDFTPEN----PEME--LSLKKGDIVAVLSKTDPLGRDSEWWKGRTRD--GRIGWFP 54
Query: 156 SQELEE 161
S +E
Sbjct: 55 SNYVEV 60
>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 = 31.9 bits (73), Expect = 0.058
Identities = 19/63 (30%), Positives = 34/63 (53%), Gaps = 12/63 (19%)
Query: 101 RC--LFTYDPKEDSLLPCKEIGLAFNHGDILQILNQKDPNWWQAQLIEPTGPMGLVPSQE 158
RC LF+Y P+ + E+ L GD +++L + + WW+ +L G +G+ PS
Sbjct: 1 RCKVLFSYTPQNED-----ELELKV--GDTIEVLGEVEEGWWEGKL---NGKVGVFPSNF 50
Query: 159 LEE 161
++E
Sbjct: 51 VKE 53
>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 = 32.0 bits (72), Expect = 0.061
Identities = 10/29 (34%), Positives = 19/29 (65%)
Query: 121 LAFNHGDILQILNQKDPNWWQAQLIEPTG 149
LAF GD++++L+ + +WW Q+ + G
Sbjct: 21 LAFKAGDVIKVLDASNKDWWWGQIDDEEG 49
>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 = 31.8 bits (73), Expect = 0.065
Identities = 16/54 (29%), Positives = 27/54 (50%), Gaps = 9/54 (16%)
Query: 96 PVCYMRCLFTYDPKEDSLLPCKEIGLAFNHGDILQILNQKDPNWWQAQLIEPTG 149
P C R L+ ++P+ + L F GDI+ + NQ D NW++ + +G
Sbjct: 1 PCC--RALYDFEPENEG-------ELGFKEGDIITLTNQIDENWYEGMVNGQSG 45
>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 = 31.7 bits (72), Expect = 0.066
Identities = 18/58 (31%), Positives = 26/58 (44%), Gaps = 9/58 (15%)
Query: 103 LFTYDPKEDSLLPCKEIGLAFNHGDILQILNQKDPNWWQAQLIEPTGPMGLVPSQELE 160
L+ Y+ ED+ EI L G+I+ + D +WW G GL PS +E
Sbjct: 5 LYDYEKDEDN-----EIELV--EGEIVTNIEMVDEDWWMG--TNSKGESGLFPSNYVE 53
>gnl|CDD|212778 cd11844, SH3_CAS, Src homology 3 domain of CAS (Crk-Associated
Substrate) scaffolding proteins. CAS proteins function
as molecular scaffolds to regulate protein complexes
that are involved in many cellular processes including
migration, chemotaxis, apoptosis, differentiation, and
progenitor cell function. They mediate the signaling of
integrins at focal adhesions where they localize, and
thus, regulate cell invasion and survival.
Over-expression of these proteins is implicated in poor
prognosis, increased metastasis, and resistance to
chemotherapeutics in many cancers such as breast, lung,
melanoma, and glioblastoma. CAS proteins have also been
linked to the pathogenesis of inflammatory disorders,
Alzheimer's, Parkinson's, and developmental defects.
They share a common domain structure that includes an
N-terminal SH3 domain, an unstructured substrate domain
that contains many YxxP motifs, a serine-rich four-helix
bundle, and a FAT-like C-terminal domain. Vertebrates
contain four CAS proteins: BCAR1 (or p130Cas), NEDD9 (or
HEF1), EFS (or SIN), and CASS4 (or HEPL). The SH3 domain
of CAS proteins binds to diverse partners including FAK,
FRNK, Pyk2, PTP-PEST, DOCK180, among others. SH3 domains
are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 56
Score = 31.5 bits (72), Expect = 0.066
Identities = 16/43 (37%), Positives = 19/43 (44%), Gaps = 6/43 (13%)
Query: 121 LAFNHGDILQILNQKDPN---WWQAQLIEPTGPMGLVPSQELE 160
LAF GDIL +L Q WW L G G+ P L+
Sbjct: 16 LAFRRGDILTVLEQNTAGLEGWWLCSL---RGRQGIAPGNRLK 55
>gnl|CDD|212988 cd12055, SH3_CIN85_2, Second Src Homology 3 domain (SH3B) of
Cbl-interacting protein of 85 kDa. CIN85, also called
SH3 domain-containing kinase-binding protein 1 (SH3KBP1)
or CD2-binding protein 3 (CD2BP3) or Ruk, is an adaptor
protein that is involved in the downregulation of
receptor tyrosine kinases by facilitating endocytosis
through interaction with endophilin-associated ubiquitin
ligase Cbl proteins. It is also important in many other
cellular processes including vesicle-mediated transport,
cytoskeletal remodelling, apoptosis, cell adhesion and
migration, and viral infection, among others. CIN85
exists as multiple variants from alternative splicing;
the main variant contains three SH3 domains, a
proline-rich region, and a C-terminal coiled-coil
domain. All of these domains enable CIN85 to bind
various protein partners and assemble complexes that
have been implicated in many different functions. This
alignment model represents the second SH3 domain (SH3B)
of CIN85. SH3B has been shown to bind Cbl proline-rich
peptides and ubiquitin. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 53
Score = 31.5 bits (71), Expect = 0.079
Identities = 16/50 (32%), Positives = 26/50 (52%), Gaps = 3/50 (6%)
Query: 112 SLLPCKEIGLAFNHGDILQILNQKDPNWWQAQLIEPTGPMGLVPSQELEE 161
S LP E L GDI++++ + + WW+ L G G+ PS ++E
Sbjct: 7 SYLPQNEDELELKVGDIIEVVGEVEEGWWEGVL---NGKTGMFPSNFIKE 53
>gnl|CDD|236802 PRK10942, PRK10942, serine endoprotease; Provisional.
Length = 473
Score = 34.7 bits (80), Expect = 0.083
Identities = 22/63 (34%), Positives = 35/63 (55%), Gaps = 2/63 (3%)
Query: 11 ILGTGL-SPCGLTVEQDANGNLIIARILAGSLIDKQGVLKVGDVILGVNGENVSSPEDLQ 69
I+GT L S ++ DA ++++L S K G+ K GDVI +NG+ +SS L+
Sbjct: 292 IMGTELNSELAKAMKVDAQRGAFVSQVLPNSSAAKAGI-KAGDVITSLNGKPISSFAALR 350
Query: 70 IEV 72
+V
Sbjct: 351 AQV 353
>gnl|CDD|212840 cd11907, SH3_TXK, Src Homology 3 domain of TXK, also called Resting
lymphocyte kinase (Rlk). TXK is a cytoplasmic (or
nonreceptor) tyr kinase containing Src homology protein
interaction domains (SH3, SH2) N-terminal to the
catalytic tyr kinase domain. It also contains an
N-terminal cysteine-rich region. Rlk is expressed in
T-cells and mast cell lines, and is a key component of
T-cell receptor (TCR) signaling. It is important in
TCR-stimulated proliferation, IL-2 production and
phospholipase C-gamma1 activation. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 55
Score = 31.5 bits (71), Expect = 0.089
Identities = 20/62 (32%), Positives = 32/62 (51%), Gaps = 9/62 (14%)
Query: 100 MRCLFTYDPKEDSLLPCKEIGLAFNHGDILQILNQKDPNWWQAQLIEPTGPMGLVPSQEL 159
++ L+ + P+E P LA + IL Q DP+WW+A+ + G GL+PS +
Sbjct: 3 VKALYDFLPRE----PSN---LALKRAEEYLILEQYDPHWWKAR--DRYGNEGLIPSNYV 53
Query: 160 EE 161
E
Sbjct: 54 TE 55
>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 = 31.3 bits (71), Expect = 0.093
Identities = 12/35 (34%), Positives = 20/35 (57%), Gaps = 3/35 (8%)
Query: 121 LAFNHGDILQILNQKDPNWWQAQLIEPTGPMGLVP 155
L+F GD+L + ++ +WW+ E G GL+P
Sbjct: 18 LSFKRGDVLLLHSKASSDWWRG---EHNGMRGLIP 49
>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 = 31.1 bits (70), Expect = 0.10
Identities = 13/40 (32%), Positives = 22/40 (55%), Gaps = 3/40 (7%)
Query: 121 LAFNHGDILQILNQKDPNWWQAQLIEPTGPMGLVPSQELE 160
L FN GD++ + Q D NW+ ++ G G+ P+ +E
Sbjct: 17 LKFNKGDVILLRRQLDENWYLGEI---NGVSGIFPASSVE 53
>gnl|CDD|212743 cd11809, SH3_srGAP, Src homology 3 domain of Slit-Robo GTPase
Activating Proteins. Slit-Robo GTPase Activating
Proteins (srGAPs) are Rho GAPs that interact with Robo1,
the transmembrane receptor of Slit proteins. Slit
proteins are secreted proteins that control axon
guidance and the migration of neurons and leukocytes.
Vertebrates contain three isoforms of srGAPs (srGAP1-3),
all of which are expressed during embryonic and early
development in the nervous system but with different
localization and timing. A fourth member has also been
reported (srGAP4, also called ARHGAP4). srGAPs contain
an N-terminal F-BAR domain, a Rho GAP domain, and a
C-terminal SH3 domain. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 53
Score = 31.2 bits (71), Expect = 0.11
Identities = 15/37 (40%), Positives = 20/37 (54%), Gaps = 3/37 (8%)
Query: 121 LAFNHGDILQILNQKDPNWWQAQLIEPTGPMGLVPSQ 157
L+F GD L + Q +WW+ QL G GLVP +
Sbjct: 16 LSFKKGDSLTLYRQVSDDWWRGQL---NGQDGLVPHK 49
>gnl|CDD|212702 cd11768, SH3_Tec_like, Src Homology 3 domain of Tec-like Protein
Tyrosine Kinases. The Tec (Tyrosine kinase expressed in
hepatocellular carcinoma) subfamily is composed of Tec,
Btk, Bmx (Etk), Itk (Tsk, Emt), Rlk (Txk), and similar
proteins. They are cytoplasmic (or nonreceptor) tyr
kinases containing Src homology protein interaction
domains (SH3, SH2) N-terminal to the catalytic tyr
kinase domain. Most Tec subfamily members (except Rlk)
also contain an N-terminal pleckstrin homology (PH)
domain, which binds the products of PI3K and allows
membrane recruitment and activation. In addition, some
members contain the Tec homology (TH) domain, which
contains proline-rich and zinc-binding regions. Tec
kinases are expressed mainly by haematopoietic cells,
although Tec and Bmx are also found in endothelial
cells. B-cells express Btk and Tec, while T-cells
express Itk, Txk, and Tec. Collectively, Tec kinases are
expressed in a variety of myeloid cells such as mast
cells, platelets, macrophages, and dendritic cells. Each
Tec kinase shows a distinct cell-type pattern of
expression. The function of Tec kinases in lymphoid
cells have been studied extensively. They play important
roles in the development, differentiation, maturation,
regulation, survival, and function of B-cells and
T-cells. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate affinity
and selectivity, preferentially to PxxP motifs. They
play versatile and diverse roles in the cell including
the regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 54
Score = 31.1 bits (71), Expect = 0.11
Identities = 15/59 (25%), Positives = 29/59 (49%), Gaps = 9/59 (15%)
Query: 103 LFTYDPKEDSLLPCKEIGLAFNHGDILQILNQKDPNWWQAQLIEPTGPMGLVPSQELEE 161
L+ + P E LP ++ G+ +L+ + +WW+A+ + G G +PS + E
Sbjct: 5 LYDFQPIEPGDLPLEK-------GEEYVVLDDSNEHWWRAR--DKNGNEGYIPSNYVTE 54
>gnl|CDD|212861 cd11928, SH3_SH3RF3_1, First Src Homology 3 domain of SH3 domain
containing ring finger 3, an E3 ubiquitin-protein
ligase. SH3RF3 is also called POSH2 (Plenty of SH3s 2)
or SH3MD4 (SH3 multiple domains protein 4). It is a
scaffold protein with E3 ubiquitin-protein ligase
activity. It was identified in the screen for
interacting partners of p21-activated kinase 2 (PAK2).
It may play a role in regulating JNK mediated apoptosis
in certain conditions. It also interacts with GTP-loaded
Rac1. SH3RF3 is highly homologous to SH3RF1; it also
contains an N-terminal RING finger domain and four SH3
domains. This model represents the first SH3 domain,
located at the N-terminal half, of SH3RF3. SH3 domains
are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 54
Score = 31.0 bits (70), Expect = 0.11
Identities = 17/62 (27%), Positives = 30/62 (48%), Gaps = 10/62 (16%)
Query: 99 YMRCLFTYDPKEDSLLPCKEIGLAFNHGDILQILNQKDPNWWQAQLIEPTGPMGLVPSQE 158
+ L++Y+ KE L FN GDI+ + + D NW+ +L G G +P+
Sbjct: 2 CGKALYSYEGKEPG-------DLKFNKGDIIILRRKVDENWYHGEL---NGCHGFLPASY 51
Query: 159 LE 160
++
Sbjct: 52 IQ 53
>gnl|CDD|212945 cd12012, SH3_RIM-BP_2, Second Src homology 3 domain of
Rab3-interacting molecules (RIMs) binding proteins.
RIMs binding proteins (RBPs, RIM-BPs) associate with
calcium channels present in photoreceptors, neurons, and
hair cells; they interact simultaneously with specific
calcium channel subunits, and active zone proteins, RIM1
and RIM2. RIMs are part of the matrix at the presynaptic
active zone and are associated with synaptic vesicles
through their interaction with the small GTPase Rab3.
RIM-BPs play a role in regulating synaptic transmission
by serving as adaptors and linking calcium channels with
the synaptic vesicle release machinery. RIM-BPs contain
three SH3 domains and two to three fibronectin III
repeats. Invertebrates contain one, while vertebrates
contain at least two RIM-BPs, RIM-BP1 and RIM-BP2.
RIM-BP1 is also called peripheral-type benzodiazapine
receptor associated protein 1 (PRAX-1). Mammals contain
a third protein, RIM-BP3. RIM-BP1 and RIM-BP2 are
predominantly expressed in the brain where they display
overlapping but distinct expression patterns, while
RIM-BP3 is almost exclusively expressed in the testis
and is essential in spermiogenesis. The SH3 domains of
RIM-BPs bind to the PxxP motifs of RIM1, RIM2, and
L-type (alpha1D) and N-type (alpha1B) calcium channel
subunits. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate affinity
and selectivity. They play versatile and diverse roles
in the cell including the regulation of enzymes,
changing the subcellular localization of signaling
pathway components, and mediating the formation of
multiprotein complex assemblies.
Length = 62
Score = 31.1 bits (71), Expect = 0.11
Identities = 19/61 (31%), Positives = 29/61 (47%), Gaps = 5/61 (8%)
Query: 103 LFTYDPKEDSLLP-CKEIGLAFNHGDILQILNQKDPN-WWQAQLIEPTGPMGLVPSQELE 160
LF YDP S P E L F G ++++ KD + ++ ++ G GLVP +
Sbjct: 5 LFDYDPLTMSPNPDAAEEELPFKEGQLIKVYGDKDADGFYLGEI---NGRRGLVPCNMVS 61
Query: 161 E 161
E
Sbjct: 62 E 62
>gnl|CDD|212860 cd11927, SH3_SH3RF1_1, First Src Homology 3 domain of SH3 domain
containing ring finger protein 1, an E3
ubiquitin-protein ligase. SH3RF1 is also called POSH
(Plenty of SH3s) or SH3MD2 (SH3 multiple domains protein
2). It is a scaffold protein that acts as an E3
ubiquitin-protein ligase. It plays a role in calcium
homeostasis through the control of the ubiquitin domain
protein Herp. It may also have a role in regulating
death receptor mediated and JNK mediated apoptosis.
SH3RF1 also enhances the ubiquitination of ROMK1
potassium channel resulting in its increased
endocytosis. It contains an N-terminal RING finger
domain and four SH3 domains. This model represents the
first SH3 domain, located at the N-terminal half, of
SH3RF1. SH3 domains are protein interaction domains that
bind to proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 54
Score = 31.1 bits (70), Expect = 0.12
Identities = 16/56 (28%), Positives = 26/56 (46%), Gaps = 10/56 (17%)
Query: 101 RCLFTYDPKEDSLLPCKEIGLAFNHGDILQILNQKDPNWWQAQLIEPTGPMGLVPS 156
+ L+ Y+ KE L F+ GDI+ + Q D NW+ ++ G G P+
Sbjct: 4 KALYNYEGKEPG-------DLKFSKGDIIILRRQVDENWYHGEV---NGIHGFFPT 49
>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 = 31.1 bits (70), Expect = 0.12
Identities = 15/42 (35%), Positives = 23/42 (54%), Gaps = 4/42 (9%)
Query: 121 LAFNHGDILQILNQK-DPNWWQAQLIEPTGPMGLVPSQELEE 161
L+ GD+++I N+K WW+ E G +G PS +EE
Sbjct: 16 LSLKEGDVVKIYNKKGQQGWWRG---EINGRIGWFPSTYVEE 54
>gnl|CDD|232883 TIGR00225, prc, C-terminal peptidase (prc). A C-terminal peptidase
with different substrates in different species including
processing of D1 protein of the photosystem II reaction
center in higher plants and cleavage of a peptide of 11
residues from the precursor form of penicillin-binding
protein in E.coli E.coli and H influenza have the most
distal branch of the tree and their proteins have an
N-terminal 200 amino acids that show no homology to
other proteins in the database [Protein fate,
Degradation of proteins, peptides, and glycopeptides,
Protein fate, Protein modification and repair].
Length = 334
Score = 33.9 bits (78), Expect = 0.13
Identities = 21/96 (21%), Positives = 38/96 (39%), Gaps = 22/96 (22%)
Query: 20 GLTVEQDANGNLIIARILAGSLIDKQGVLKVGDVILGVNGENV----------------S 63
G+ V D +G ++I GS +K G +K GD I+ +NG++V
Sbjct: 54 GIQVGMD-DGEIVIVSPFEGSPAEKAG-IKPGDKIIKINGKSVAGMSLDDAVALIRGKKG 111
Query: 64 SPEDLQIEVVKSDGNIQFTIAPQGDDASLPIKPVCY 99
+ L+I + FT+ + ++ V
Sbjct: 112 TKVSLEILRAGKSKPLTFTL----KRDRIELQTVKA 143
>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 = 30.5 bits (69), Expect = 0.14
Identities = 13/37 (35%), Positives = 21/37 (56%), Gaps = 1/37 (2%)
Query: 121 LAFNHGDILQILNQKDPNWWQAQLIEPTGPMGLVPSQ 157
L F GD++++L+ D +WW +L G G+ PS
Sbjct: 16 LGFLEGDLIEVLSIGDGSWWSGKLRR-NGAEGIFPSN 51
>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 = 30.8 bits (70), Expect = 0.15
Identities = 13/41 (31%), Positives = 23/41 (56%), Gaps = 3/41 (7%)
Query: 121 LAFNHGDILQILNQKDPNWWQAQLIEPTGPMGLVPSQELEE 161
L+ GDI+++ ++D WW +L G G+ P+ +EE
Sbjct: 16 LSLQPGDIIEVHEKQDDGWWLGEL---NGKKGIFPATYVEE 53
>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 = 30.4 bits (69), Expect = 0.17
Identities = 20/60 (33%), Positives = 30/60 (50%), Gaps = 9/60 (15%)
Query: 101 RCLFTYDPKEDSLLPCKEIGLAFNHGDILQILNQKDPNWWQAQLIEPTGPMGLVPSQELE 160
R L+ Y +D+ EI +F+ GDI+ + Q D WW+ P G GL P+ +E
Sbjct: 3 RALYDYQAADDT-----EI--SFDPGDIITDIEQIDEGWWRGT--GPDGTYGLFPANYVE 53
>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 = 30.2 bits (68), Expect = 0.19
Identities = 12/36 (33%), Positives = 20/36 (55%), Gaps = 2/36 (5%)
Query: 121 LAFNHGDILQILNQKDPNWWQAQLIEPTGPMGLVPS 156
L + GDI+++L + + NWW L+ G G P+
Sbjct: 16 LTIHRGDIIRVLYKDNDNWWFGSLVN--GQQGYFPA 49
>gnl|CDD|212800 cd11866, SH3_SKAP1-like, Src Homology 3 domain of Src
Kinase-Associated Phosphoprotein 1 and similar proteins.
This subfamily is composed of SKAP1, SKAP2, and similar
proteins. SKAP1 and SKAP2 are immune cell-specific
adaptor proteins that play roles in T- and B-cell
adhesion, respectively, and are thus important in the
migration of T- and B-cells to sites of inflammation and
for movement during T-cell conjugation with
antigen-presenting cells. Both SKAP1 and SKAP2 bind to
ADAP (adhesion and degranulation-promoting adaptor
protein), among many other binding partners. They
contain a pleckstrin homology (PH) domain, a C-terminal
SH3 domain, and several tyrosine phosphorylation sites.
The SH3 domain of SKAP1 is necessary for its ability to
regulate T-cell conjugation with antigen-presenting
cells and the formation of LFA-1 clusters. SKAP1 binds
primarily to a proline-rich region of ADAP through its
SH3 domain; its degradation is regulated by ADAP. A
secondary interaction occurs via the ADAP SH3 domain and
the RKxxYxxY motif in SKAP1. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 53
Score = 30.1 bits (68), Expect = 0.22
Identities = 13/37 (35%), Positives = 22/37 (59%), Gaps = 5/37 (13%)
Query: 121 LAFNHGDILQILNQK--DPNWWQAQLIEPTGPMGLVP 155
L+F GD++ I++++ WW +L G +GLVP
Sbjct: 16 LSFKRGDLIYIISKEYDSFGWWVGEL---NGKVGLVP 49
>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 = 30.1 bits (68), Expect = 0.24
Identities = 15/40 (37%), Positives = 24/40 (60%), Gaps = 4/40 (10%)
Query: 121 LAFNHGDILQILNQKDPNWWQAQLIEPTGPMGLVPSQELE 160
L+F GD+L+IL+ D W++A+L G G VP ++
Sbjct: 16 LSFKKGDVLKILSSDD-IWFKAEL---NGEEGYVPKNFVD 51
>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 = 29.8 bits (67), Expect = 0.26
Identities = 17/61 (27%), Positives = 26/61 (42%), Gaps = 10/61 (16%)
Query: 101 RCLFTYDPKEDSLLPCKEIGLAFNHGDILQILNQKDPNWWQAQLIEPTGPMGLVPSQELE 160
+ L+ YD ED+ L+F D + + D +WW + G GL PS +E
Sbjct: 3 KALYDYDAAEDN-------ELSFFENDKIINIEFVDDDWWLGEC---HGSRGLFPSNYVE 52
Query: 161 E 161
Sbjct: 53 L 53
>gnl|CDD|212987 cd12054, SH3_CD2AP_2, Second Src Homology 3 domain (SH3B) of
CD2-associated protein. CD2AP, also called CMS (Cas
ligand with Multiple SH3 domains) or METS1
(Mesenchyme-to-Epithelium Transition protein with SH3
domains), is a cytosolic adaptor protein that plays a
role in regulating the cytoskeleton. It is critical in
cell-to-cell union necessary for kidney function. It
also stabilizes the contact between a T cell and
antigen-presenting cells. It is primarily expressed in
podocytes at the cytoplasmic face of the slit diaphragm
and serves as a linker anchoring podocin and nephrin to
the actin cytoskeleton. CD2AP contains three SH3
domains, a proline-rich region, and a C-terminal
coiled-coil domain. All of these domains enable CD2AP to
bind various protein partners and assemble complexes
that have been implicated in many different functions.
This alignment model represents the second SH3 domain
(SH3B) of CD2AP. SH3B binds to c-Cbl in a site (TPSSRPLR
is the core binding motif) distinct from the c-Cbl/SH3A
binding site. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP motifs.
They play versatile and diverse roles in the cell
including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 55
Score = 29.9 bits (67), Expect = 0.27
Identities = 16/48 (33%), Positives = 22/48 (45%), Gaps = 3/48 (6%)
Query: 114 LPCKEIGLAFNHGDILQILNQKDPNWWQAQLIEPTGPMGLVPSQELEE 161
+P E L GDI+ I + + WW L G GL PS ++E
Sbjct: 10 VPQNEDELELKVGDIIDINEEVEEGWWSGTL---NGKSGLFPSNFVKE 54
>gnl|CDD|212936 cd12003, SH3_EFS, Src homology 3 domain of CAS (Crk-Associated
Substrate) scaffolding protein family member, Embryonal
Fyn-associated Substrate. EFS is also called HEFS,
CASS3 (Cas scaffolding protein family member 3) or SIN
(Src-interacting protein). It was identified based on
interactions with the Src kinases, Fyn and Yes. It plays
a role in thymocyte development and acts as a negative
regulator of T cell proliferation. CAS proteins function
as molecular scaffolds to regulate protein complexes
that are involved in many cellular processes. They share
a common domain structure that includes an N-terminal
SH3 domain, an unstructured substrate domain that
contains many YxxP motifs, a serine-rich four-helix
bundle, and a FAT-like C-terminal domain. The SH3 domain
of CAS proteins binds to diverse partners including FAK,
FRNK, Pyk2, PTP-PEST, DOCK180, among others. SH3 domains
are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 62
Score = 29.9 bits (67), Expect = 0.31
Identities = 13/43 (30%), Positives = 21/43 (48%), Gaps = 6/43 (13%)
Query: 121 LAFNHGDILQILNQKDPN---WWQAQLIEPTGPMGLVPSQELE 160
L+F GD+L +L ++ + WW L G G+ P+ L
Sbjct: 17 LSFRRGDVLMVLKREHGSLPGWWLCSL---HGQQGIAPANRLR 56
>gnl|CDD|226011 COG3480, SdrC, Predicted secreted protein containing a PDZ domain
[Signal transduction mechanisms].
Length = 342
Score = 32.8 bits (75), Expect = 0.35
Identities = 13/30 (43%), Positives = 20/30 (66%), Gaps = 1/30 (3%)
Query: 46 GVLKVGDVILGVNGENVSSPEDLQIEVVKS 75
G L+ GD I+ V+GE +S ++L I+ V S
Sbjct: 145 GKLEAGDTIIAVDGEPFTSSDEL-IDYVSS 173
>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 = 29.7 bits (67), Expect = 0.37
Identities = 14/41 (34%), Positives = 24/41 (58%), Gaps = 1/41 (2%)
Query: 121 LAFNHGDILQILNQKDPNWWQAQLIEPTGPMGLVPSQELEE 161
L+ DI+ I+ ++D WW A+ ++ + G VP+ LEE
Sbjct: 16 LSLKKDDIVYIVQKEDNGWWLAKKLDESKE-GWVPAAYLEE 55
>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 = 29.2 bits (66), Expect = 0.41
Identities = 7/20 (35%), Positives = 13/20 (65%)
Query: 121 LAFNHGDILQILNQKDPNWW 140
L F+ G+I+ + ++D WW
Sbjct: 16 LTFSEGEIIVVTGEEDDEWW 35
>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 = 29.2 bits (66), Expect = 0.49
Identities = 11/33 (33%), Positives = 18/33 (54%)
Query: 117 KEIGLAFNHGDILQILNQKDPNWWQAQLIEPTG 149
K+ L+F GDI+ + + D W++ L TG
Sbjct: 12 KDDELSFQEGDIIYVTKKNDDGWYEGVLNGVTG 44
>gnl|CDD|212913 cd11980, SH3_VAV2_1, First Src homology 3 domain of VAV2 protein.
VAV2 is widely expressed and functions as a guanine
nucleotide exchange factor (GEF) for RhoA, RhoB and RhoG
and also activates Rac1 and Cdc42. It is implicated in
many cellular and physiological functions including
blood pressure control, eye development, neurite
outgrowth and branching, EGFR endocytosis and
degradation, and cell cluster morphology, among others.
It has been reported to associate with Nek3. VAV
proteins contain several domains that enable their
function: N-terminal calponin homology (CH), acidic,
RhoGEF (also called Dbl-homologous or DH), Pleckstrin
Homology (PH), C1 (zinc finger), SH2, and two SH3
domains. The SH3 domain of VAV is involved in the
localization of proteins to specific sites within the
cell, by interacting with proline-rich sequences within
target proteins. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP motifs.
They play versatile and diverse roles in the cell
including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 60
Score = 29.1 bits (65), Expect = 0.56
Identities = 14/42 (33%), Positives = 25/42 (59%), Gaps = 4/42 (9%)
Query: 121 LAFNHGDILQILNQKDPN--WWQAQLIEPTGPMGLVPSQELE 160
L F GD++++L + DP+ WW+ +L+ T G PS ++
Sbjct: 20 LTFQTGDVIELL-RGDPDSPWWEGRLL-QTKKSGYFPSSSVK 59
>gnl|CDD|234861 PRK00911, PRK00911, dihydroxy-acid dehydratase; Provisional.
Length = 552
Score = 32.3 bits (75), Expect = 0.57
Identities = 11/21 (52%), Positives = 13/21 (61%)
Query: 153 LVPSQELEERRKAFVPPEADY 173
LV +EL RR A+ PPE Y
Sbjct: 508 LVSDEELARRRAAWKPPEPKY 528
>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 = 28.8 bits (65), Expect = 0.64
Identities = 13/41 (31%), Positives = 21/41 (51%), Gaps = 3/41 (7%)
Query: 121 LAFNHGDILQILNQKDPNWWQAQLIEPTGPMGLVPSQELEE 161
L+F+ GDI+ + + WW+ L G G PS ++E
Sbjct: 16 LSFDKGDIITVTQVVEGGWWEGTL---NGKTGWFPSNYVKE 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 = 28.8 bits (64), Expect = 0.64
Identities = 14/41 (34%), Positives = 23/41 (56%), Gaps = 3/41 (7%)
Query: 121 LAFNHGDILQILNQKDPNWWQAQLIEPTGPMGLVPSQELEE 161
L+F GD + IL + D NW++ E G +G+ P +E+
Sbjct: 17 LSFKKGDTVYILRKIDQNWYEG---EHHGRVGIFPISYVEK 54
>gnl|CDD|236456 PRK09290, PRK09290, allantoate amidohydrolase; Reviewed.
Length = 413
Score = 32.1 bits (74), Expect = 0.67
Identities = 21/74 (28%), Positives = 28/74 (37%), Gaps = 23/74 (31%)
Query: 20 GLTVEQDANGNLIIAR----------ILAGSLIDKQ----------GVLKVGDVILGVNG 59
GLTV DA GN + R +L GS +D GVL + + +N
Sbjct: 51 GLTVRVDAVGN-LFGRLEGRDPDAPAVLTGSHLDTVPNGGRFDGPLGVLAGLEAVRTLNE 109
Query: 60 ENVSSPEDLQIEVV 73
+ IEVV
Sbjct: 110 RGIRPRRP--IEVV 121
>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 = 28.7 bits (64), Expect = 0.74
Identities = 15/49 (30%), Positives = 27/49 (55%), Gaps = 1/49 (2%)
Query: 101 RCLFTYDPKEDSLLPCKEIGLAFNHGDILQILNQKDPNWWQAQLIEPTG 149
R L+ +D KE + K+ L F DI+ ++++ D NW + +L + G
Sbjct: 3 RALYNFDLKEKNREESKDC-LKFQKDDIITVISRVDENWAEGKLGDQVG 50
>gnl|CDD|226483 COG3975, COG3975, Predicted protease with the C-terminal PDZ domain
[General function prediction only].
Length = 558
Score = 32.0 bits (73), Expect = 0.75
Identities = 20/75 (26%), Positives = 32/75 (42%), Gaps = 7/75 (9%)
Query: 19 CGLTVEQDANGNLIIARILAGSLIDKQGVLKVGDVILGVNGENVS----SPED-LQIEVV 73
GL V+ + G+ I + G K G L GD I+ +NG + D +Q+ V
Sbjct: 453 LGLKVKSE-GGHEKITFVFPGGPAYKAG-LSPGDKIVAINGISDQLDRYKVNDKIQVHVF 510
Query: 74 KSDGNIQFTIAPQGD 88
+ +F + GD
Sbjct: 511 REGRLREFLVKLGGD 525
>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 = 28.5 bits (63), Expect = 0.87
Identities = 8/20 (40%), Positives = 14/20 (70%)
Query: 121 LAFNHGDILQILNQKDPNWW 140
LAF GD++++L + +WW
Sbjct: 17 LAFKAGDVIRVLEASNKDWW 36
>gnl|CDD|224179 COG1259, COG1259, Uncharacterized conserved protein [Function
unknown].
Length = 151
Score = 30.4 bits (69), Expect = 0.96
Identities = 10/34 (29%), Positives = 21/34 (61%), Gaps = 1/34 (2%)
Query: 397 IDKVIVNEDFDETFRTVIELLDTLSNKHQVDSRP 430
++KV++++ D T+ + L+ K Q+D+RP
Sbjct: 75 VEKVVIDDLIDNTYYATLI-LEQDDGKIQIDARP 107
>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 = 28.4 bits (64), Expect = 0.97
Identities = 12/62 (19%), Positives = 25/62 (40%), Gaps = 10/62 (16%)
Query: 100 MRCLFTYDPKEDSLLPCKEIGLAFNHGDILQILNQKDPNWWQAQLIEPTGPMGLVPSQEL 159
+ Y+ + D ++ G+++++L + D WW + G VP+ L
Sbjct: 2 YVAIADYEAQGDD-------EISLQEGEVVEVLEKNDSGWW---YVRKGDKEGWVPASYL 51
Query: 160 EE 161
E
Sbjct: 52 EP 53
>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 = 28.2 bits (63), Expect = 1.1
Identities = 14/53 (26%), Positives = 22/53 (41%), Gaps = 12/53 (22%)
Query: 104 FTYDPKEDSLLPCKEIGLAFNHGDILQILNQKDPNWWQAQLIEPTGPMGLVPS 156
FT + +ED L+F GD + + D W + +L G G+ P
Sbjct: 8 FTGETEED---------LSFQRGDRILVTEHLDAEWSRGRL---NGREGIFPR 48
>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 = 28.0 bits (63), Expect = 1.1
Identities = 10/46 (21%), Positives = 18/46 (39%), Gaps = 7/46 (15%)
Query: 104 FTYDPKEDSLLPCKEIGLAFNHGDILQILNQKDPNWWQAQLIEPTG 149
F Y+ +E L+ GD + +L + WW+ + G
Sbjct: 6 FNYEA-------QREDELSLRKGDRVLVLEKSSDGWWRGECNGQVG 44
>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 = 28.1 bits (62), Expect = 1.2
Identities = 9/24 (37%), Positives = 16/24 (66%), Gaps = 1/24 (4%)
Query: 121 LAFNHGDILQILNQKDPNWWQAQL 144
L F+ DI+ +L Q++ NWW ++
Sbjct: 16 LNFSKNDIITVLEQQE-NWWFGEV 38
>gnl|CDD|212771 cd11837, SH3_Intersectin_2, Second Src homology 3 domain (or SH3B)
of Intersectin. Intersectins (ITSNs) are adaptor
proteins that function in exo- and endocytosis, actin
cytoskeletal reorganization, and signal transduction.
They are essential for initiating clathrin-coated pit
formation. They bind to many proteins through their
multidomain structure and facilitate the assembly of
multimeric complexes. Vertebrates contain two ITSN
proteins, ITSN1 and ITSN2, which exist in alternatively
spliced short and long isoforms. The short isoforms
contain two Eps15 homology domains (EH1 and EH2), a
coiled-coil region and five SH3 domains (SH3A-E), while
the long isoforms, in addition, contain RhoGEF (also
called Dbl-homologous or DH), Pleckstrin homology (PH)
and C2 domains. ITSN1 and ITSN2 are both widely
expressed, with variations depending on tissue type and
stage of development. The second SH3 domain (or SH3B) of
ITSN1 has been shown to bind WNK and CdGAP. SH3 domains
are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 53
Score = 28.1 bits (63), Expect = 1.2
Identities = 15/39 (38%), Positives = 21/39 (53%), Gaps = 3/39 (7%)
Query: 117 KEIGLAFNHGDILQILNQKDPNWWQAQLIEPTGPMGLVP 155
KE L+F GDI+ +L Q++ WW +L G G P
Sbjct: 12 KENHLSFAKGDIITVLEQQE-MWWFGEL--EGGEEGWFP 47
>gnl|CDD|212765 cd11831, SH3_VAV_1, First Src homology 3 domain of VAV proteins.
VAV proteins function both as cytoplasmic guanine
nucleotide exchange factors (GEFs) for Rho GTPases and
scaffold proteins and they play important roles in cell
signaling by coupling cell surface receptors to various
effector functions. They play key roles in processes
that require cytoskeletal reorganization including
immune synapse formation, phagocytosis, cell spreading,
and platelet aggregation, among others. Vertebrates have
three VAV proteins (VAV1, VAV2, and VAV3). VAV proteins
contain several domains that enable their function:
N-terminal calponin homology (CH), acidic, RhoGEF (also
called Dbl-homologous or DH), Pleckstrin Homology (PH),
C1 (zinc finger), SH2, and two SH3 domains. The SH3
domain of VAV is involved in the localization of
proteins to specific sites within the cell, by
interacting with proline-rich sequences within target
proteins. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate affinity
and selectivity, preferentially to PxxP motifs. They
play versatile and diverse roles in the cell including
the regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 62
Score = 28.3 bits (63), Expect = 1.2
Identities = 10/37 (27%), Positives = 19/37 (51%), Gaps = 2/37 (5%)
Query: 121 LAFNHGDILQILN-QKDPNWWQAQLIEPTGPMGLVPS 156
L GD++++L + WW+ + + T +G PS
Sbjct: 22 LTLQTGDVVELLKGDAESPWWEGRNVA-TREVGYFPS 57
>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 = 28.1 bits (63), Expect = 1.3
Identities = 14/41 (34%), Positives = 22/41 (53%), Gaps = 3/41 (7%)
Query: 121 LAFNHGDILQILNQKDPNWWQAQLIEPTGPMGLVPSQELEE 161
L+ GDI+ I Q D NW++ E G +G+ P+ +E
Sbjct: 16 LSLKKGDIIYIRRQIDKNWYEG---EHNGRVGIFPASYVEI 53
>gnl|CDD|212708 cd11774, SH3_Sla1p_2, Second Src Homology 3 domain of the fungal
endocytic adaptor protein Sla1p. Sla1p facilitates
endocytosis by playing a role as an adaptor protein in
coupling components of the actin cytoskeleton to the
endocytic machinery. It interacts with Abp1p, Las17p and
Pan1p, which are activator proteins of actin-related
protein 2/3 (Arp2/3). Sla1p contains multiple domains
including three SH3 domains, a SAM (sterile alpha motif)
domain, and a Sla1 homology domain 1 (SHD1), which binds
to the NPFXD motif that is found in many integral
membrane proteins such as the Golgi-localized
Arf-binding protein Lsb5p and the P4-ATPases, Drs2p and
Dnf1p. SH3 domains are protein interaction domains that
bind to proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 52
Score = 27.8 bits (62), Expect = 1.4
Identities = 11/36 (30%), Positives = 16/36 (44%), Gaps = 2/36 (5%)
Query: 121 LAFNHGDILQILNQKDPNWWQAQLIEPTGPMGLVPS 156
L+FN GD L + + D +W G VP+
Sbjct: 16 LSFNEGDTLDVYDDSDSDWILVGFNGTQ--FGFVPA 49
>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 = 27.9 bits (62), Expect = 1.4
Identities = 8/24 (33%), Positives = 16/24 (66%)
Query: 120 GLAFNHGDILQILNQKDPNWWQAQ 143
GL+F G+++++L D WW+ +
Sbjct: 16 GLSFEAGELIRVLQAPDGGWWEGE 39
>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 = 27.8 bits (62), Expect = 1.4
Identities = 12/31 (38%), Positives = 18/31 (58%), Gaps = 3/31 (9%)
Query: 126 GDILQILNQKDPNWWQAQLIEPTGPMGLVPS 156
GDIL +LN + +WW+ +E G VP+
Sbjct: 21 GDILTLLNSSNKDWWK---VEVNDRQGFVPA 48
>gnl|CDD|237271 PRK13016, PRK13016, dihydroxy-acid dehydratase; Provisional.
Length = 577
Score = 30.8 bits (70), Expect = 1.5
Identities = 13/38 (34%), Positives = 21/38 (55%)
Query: 153 LVPSQELEERRKAFVPPEADYVHKIGICGTRYIKQYNT 190
LV +EL RR A+ PPE Y G +++++Q +
Sbjct: 519 LVSDEELARRRAAWQPPERRYERGYGWMFSQHVEQADK 556
>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 = 27.8 bits (62), Expect = 1.5
Identities = 12/41 (29%), Positives = 24/41 (58%), Gaps = 3/41 (7%)
Query: 121 LAFNHGDILQILNQKDPNWWQAQLIEPTGPMGLVPSQELEE 161
L F GD++ +L++ + +W + Q G +G+ PS +E+
Sbjct: 16 LEFQKGDVILVLSKVNEDWLEGQC---KGKIGIFPSAFVED 53
>gnl|CDD|212887 cd11954, SH3_ASPP1, Src Homology 3 domain of Apoptosis Stimulating
of p53 protein 1. ASPP1, like ASPP2, activates the
apoptotic function of the p53 family of tumor
suppressors (p53, p63, and p73). In addition, it
functions in the cytoplasm to regulate the nuclear
localization of the transcriptional cofactors YAP and
TAZ by inihibiting their phosphorylation; YAP and TAZ
are important regulators of cell expansion,
differentiation, migration, and invasion. ASPP1 is
downregulated in breast tumors expressing wild-type p53.
It contains a proline-rich region, four ankyrin (ANK)
repeats, and an SH3 domain at its C-terminal half. The
SH3 domain and the ANK repeats of ASPP1 contribute to
the p53 binding site; they bind to the DNA binding
domain of p53. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP motifs.
They play versatile and diverse roles in the cell
including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 57
Score = 28.1 bits (62), Expect = 1.5
Identities = 13/32 (40%), Positives = 18/32 (56%), Gaps = 3/32 (9%)
Query: 121 LAFNHGDILQILNQKD---PNWWQAQLIEPTG 149
L+F GD + IL +KD WW A+L + G
Sbjct: 17 LSFQEGDAITILRRKDDSETEWWWARLNDKEG 48
>gnl|CDD|212740 cd11806, SH3_PRMT2, Src homology 3 domain of Protein arginine
N-methyltransferase 2. PRMT2, also called HRMT1L1,
belongs to the arginine methyltransferase protein
family. It functions as a coactivator to both estrogen
receptor alpha (ER-alpha) and androgen receptor (AR),
presumably through arginine methylation. The ER-alpha
transcription factor is involved in cell proliferation,
differentiation, morphogenesis, and apoptosis, and is
also implicated in the development and progression of
breast cancer. PRMT2 and its variants are upregulated in
breast cancer cells and may be involved in modulating
the ER-alpha signaling pathway during formation of
breast cancer. PRMT2 also plays a role in regulating the
function of E2F transcription factors, which are
critical cell cycle regulators, by binding to the
retinoblastoma gene product (RB). It contains an
N-terminal SH3 domain and an AdoMet binding domain. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 53
Score = 27.7 bits (62), Expect = 1.6
Identities = 13/39 (33%), Positives = 20/39 (51%), Gaps = 3/39 (7%)
Query: 121 LAFNHGDILQILNQKDPNWWQAQLIEPTGPMGLVPSQEL 159
L+F GD L +L + +WW A+ G G +P+ L
Sbjct: 16 LSFESGDKLLVLRKPSVDWWWAEH---NGCCGYIPASHL 51
>gnl|CDD|216192 pfam00920, ILVD_EDD, Dehydratase family.
Length = 521
Score = 30.9 bits (71), Expect = 1.7
Identities = 13/36 (36%), Positives = 17/36 (47%), Gaps = 7/36 (19%)
Query: 153 LVPSQELEERRKAFVPPEADYVHKIGICGTRYIKQY 188
LV +EL RR A+ PPE Y Y+ +Y
Sbjct: 482 LVSDEELARRRAAWKPPEPRY-------KRGYLAKY 510
>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 = 27.7 bits (61), Expect = 1.7
Identities = 14/36 (38%), Positives = 18/36 (50%), Gaps = 3/36 (8%)
Query: 121 LAFNHGDILQILNQKDPNWWQAQLIEPTGPMGLVPS 156
L F+ GD L +L+ WW A T MG +PS
Sbjct: 16 LKFSKGDHLYVLDTSGGEWWYAH---NTTEMGYIPS 48
>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 = 27.6 bits (61), Expect = 1.8
Identities = 15/38 (39%), Positives = 22/38 (57%), Gaps = 7/38 (18%)
Query: 121 LAFNHGDILQILNQKDPN---WWQAQLIEPTGPMGLVP 155
L+F GD + IL+ K+ N WW ++ G +GLVP
Sbjct: 16 LSFKRGDTIYILS-KEYNRFGWWVGEM---KGTIGLVP 49
>gnl|CDD|193505 cd03884, M20_bAS, M20 Peptidase beta-alanine synthase, an
amidohydrolase. Peptidase M20 family, beta-alanine
synthase (bAS; N-carbamoyl-beta-alanine amidohydrolase
and beta-ureidopropionase; EC 3.5.1.6) subfamily. bAS
is an amidohydrolase and is the final enzyme in the
pyrimidine catabolic pathway, which is involved in the
regulation of the cellular pyrimidine pool. The bAS
catalyzes the irreversible hydrolysis of the
N-carbamylated beta-amino acids to beta-alanine or
aminoisobutyrate under the release of carbon dioxide
and ammonia. Also included in this subfamily is
allantoate amidohydrolase (allantoate deiminase), which
catalyzes the conversion of allantoate to
(S)-ureidoglycolate, one of the crucial alternate steps
in purine metabolism. It is possible that these two
enzymes arose from the same ancestral peptidase that
evolved into two structurally related enzymes with
distinct catalytic properties and biochemical roles
within the cell. Yeast requires beta-alanine as a
precursor of pantothenate and coenzyme A biosynthesis,
but generates it mostly via degradation of spermine.
Disorders in pyrimidine degradation and beta-alanine
metabolism caused by beta-ureidopropionase deficiency
(UPB1 gene) in humans are normally associated with
neurological disorders.
Length = 399
Score = 30.5 bits (70), Expect = 1.9
Identities = 12/33 (36%), Positives = 14/33 (42%), Gaps = 9/33 (27%)
Query: 20 GLTVEQDANGNLII---------ARILAGSLID 43
GL V DA GNL +L GS +D
Sbjct: 43 GLEVRIDAAGNLFGRLEGADPDLPAVLTGSHLD 75
>gnl|CDD|223821 COG0750, COG0750, Predicted membrane-associated Zn-dependent
proteases 1 [Cell envelope biogenesis, outer membrane].
Length = 375
Score = 30.6 bits (69), Expect = 1.9
Identities = 14/46 (30%), Positives = 26/46 (56%), Gaps = 1/46 (2%)
Query: 32 IIARILAGSLIDKQGVLKVGDVILGVNGENVSSPEDLQIEVVKSDG 77
++ + S G L+ GD I+ V+GE V+S +D++ +V + G
Sbjct: 132 VVGEVAPKSAAALAG-LRPGDRIVAVDGEKVASWDDVRRLLVAAAG 176
>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 = 27.6 bits (61), Expect = 1.9
Identities = 13/47 (27%), Positives = 24/47 (51%), Gaps = 8/47 (17%)
Query: 103 LFTYDPKEDSLLPCKEIGLAFNHGDILQILNQKDPNWWQAQLIEPTG 149
++TY+ E L F GD++ ++ +KD +WW + + TG
Sbjct: 5 MYTYESNEQG-------DLTFQQGDVI-LVTKKDGDWWTGTVGDKTG 43
>gnl|CDD|212891 cd11958, SH3_RUSC1, Src homology 3 domain of RUN and SH3
domain-containing protein 1. RUSC1, also called NESCA
(New molecule containing SH3 at the carboxy-terminus),
is highly expressed in the brain and is translocated to
the nuclear membrane from the cytoplasm upon stimulation
with neurotrophin. It plays a role in facilitating
neurotrophin-dependent neurite outgrowth. It also
interacts with NEMO (or IKKgamma) and may function in
NEMO-mediated activation of NF-kB. RUSC proteins are
adaptor proteins consisting of RUN, leucine zipper, and
SH3 domains. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate affinity
and selectivity, preferentially to PxxP motifs. They
play versatile and diverse roles in the cell including
the regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 51
Score = 27.5 bits (61), Expect = 1.9
Identities = 13/38 (34%), Positives = 19/38 (50%), Gaps = 3/38 (7%)
Query: 118 EIGLAFNHGDILQILNQKDPNWWQAQLIEPTGPMGLVP 155
E L+F G+ LQ+L D +W + + GLVP
Sbjct: 12 ESQLSFRKGEELQVLGTVDEDWIRCR---RGDREGLVP 46
>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 = 27.7 bits (62), Expect = 1.9
Identities = 10/38 (26%), Positives = 21/38 (55%), Gaps = 3/38 (7%)
Query: 118 EIGLAFNHGDILQILNQKDPNWWQAQLIEPTGPMGLVP 155
+ L+F GD++ + + D NW++ ++ G G+ P
Sbjct: 13 GVELSFRKGDVITLTRRVDENWYEGRI---GGRQGIFP 47
>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 = 27.4 bits (61), Expect = 2.0
Identities = 13/36 (36%), Positives = 19/36 (52%), Gaps = 5/36 (13%)
Query: 121 LAFNHGDILQILNQKDPNWWQAQLIEPTGPM-GLVP 155
L+F GDIL+++ + D +W G GLVP
Sbjct: 16 LSFRKGDILRVIARVDDDWLLCTR----GSTKGLVP 47
>gnl|CDD|212811 cd11878, SH3_Bem1p_1, First Src Homology 3 domain of Bud emergence
protein 1 and similar domains. Members of this
subfamily bear similarity to Saccharomyces cerevisiae
Bem1p, containing two Src Homology 3 (SH3) domains at
the N-terminus, a central PX domain, and a C-terminal
PB1 domain. Bem1p is a scaffolding protein that is
critical for proper Cdc42p activation during bud
formation in yeast. During budding and mating, Bem1p
migrates to the plasma membrane where it can serve as an
adaptor for Cdc42p and some other proteins. Bem1p also
functions as an effector of the G1 cyclin Cln3p and the
cyclin-dependent kinase Cdc28p in promoting vacuolar
fusion. SH3 domains bind to proline-rich ligands with
moderate affinity and selectivity, preferentially to
PxxP motifs; they play a role in the regulation of
enzymes by intramolecular interactions, changing the
subcellular localization of signal pathway components
and mediate multiprotein complex assemblies.
Length = 54
Score = 27.3 bits (61), Expect = 2.3
Identities = 14/37 (37%), Positives = 22/37 (59%), Gaps = 4/37 (10%)
Query: 121 LAFNHGDILQILNQKDPN-WWQAQLIEP-TGPMGLVP 155
L+F+ GD ++ ++D W++A P TG GLVP
Sbjct: 16 LSFSKGDFFHVIGEEDQGEWYEAT--NPVTGKRGLVP 50
>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 = 27.2 bits (60), Expect = 2.3
Identities = 13/41 (31%), Positives = 20/41 (48%), Gaps = 3/41 (7%)
Query: 120 GLAFNHGDILQILNQKDPNWWQAQLIEPTGPMGLVPSQELE 160
L GDI+ I + D NW + E G +G+ P+ +E
Sbjct: 16 ELTLQKGDIVYIHKEVDKNWLEG---EHHGRVGIFPANYVE 53
>gnl|CDD|212906 cd11973, SH3_ASEF, Src homology 3 domain of APC-Stimulated guanine
nucleotide Exchange Factor. ASEF, also called ARHGEF4,
exists in an autoinhibited form and is activated upon
binding of the tumor suppressor APC (adenomatous
polyposis coli). GEFs activate small GTPases by
exchanging bound GDP for free GTP. ASEF can activate
Rac1 or Cdc42. Truncated ASEF, which is found in
colorectal cancers, is constitutively active and has
been shown to promote angiogenesis and cancer cell
migration. ASEF contains a SH3 domain followed by RhoGEF
(also called Dbl-homologous or DH) and Pleckstrin
Homology (PH) domains. In its autoinhibited form, the
SH3 domain of ASEF forms an extensive interface with the
DH and PH domains, blocking the Rac binding site. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 73
Score = 27.7 bits (61), Expect = 2.7
Identities = 7/29 (24%), Positives = 18/29 (62%)
Query: 121 LAFNHGDILQILNQKDPNWWQAQLIEPTG 149
L F GD++++++ + WW ++++ G
Sbjct: 34 LGFKAGDVIEVMDATNKEWWWGRVLDSEG 62
>gnl|CDD|237250 PRK12893, PRK12893, allantoate amidohydrolase; Reviewed.
Length = 412
Score = 29.8 bits (68), Expect = 3.2
Identities = 15/35 (42%), Positives = 17/35 (48%), Gaps = 9/35 (25%)
Query: 20 GLTVEQDANGNLIIAR---------ILAGSLIDKQ 45
GLTV DA GNL R +L GS +D Q
Sbjct: 54 GLTVSVDAIGNLFGRRAGTDPDAPPVLIGSHLDTQ 88
>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 = 27.3 bits (60), Expect = 3.3
Identities = 16/55 (29%), Positives = 26/55 (47%), Gaps = 8/55 (14%)
Query: 106 YDPKEDSLLPCKEIGLAFNHGDILQILNQKDPNWWQAQLIEPTGPMGLVPSQELE 160
YD +D KE L+F G I+ ++ + D W++ + G GL P +E
Sbjct: 9 YDYTKD-----KEDELSFQEGAIIYVIKKNDDGWYEGVM---NGVTGLFPGNYVE 55
>gnl|CDD|177748 PLN00144, PLN00144, acetylornithine transaminase.
Length = 382
Score = 29.7 bits (67), Expect = 3.3
Identities = 16/55 (29%), Positives = 24/55 (43%), Gaps = 17/55 (30%)
Query: 234 HKFLEYGEHNGHLYGTHLDSIREVILSGKICVLDCSPV----GLFT----FLLGL 280
F+EYG L++ R++I GK + PV G++ FL GL
Sbjct: 148 VTFVEYGN---------LEAARKLIQKGKTAAVFVEPVQGEGGIYPATKEFLQGL 193
Score = 28.5 bits (64), Expect = 6.8
Identities = 11/39 (28%), Positives = 18/39 (46%), Gaps = 9/39 (23%)
Query: 338 HKFLEYGEHNGHLYGTHLDSIREVILSGKICVLDCSPVE 376
F+EYG L++ R++I GK + PV+
Sbjct: 148 VTFVEYGN---------LEAARKLIQKGKTAAVFVEPVQ 177
>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 = 26.8 bits (59), Expect = 3.4
Identities = 19/55 (34%), Positives = 27/55 (49%), Gaps = 8/55 (14%)
Query: 106 YDPKEDSLLPCKEIGLAFNHGDILQILNQKDPNWWQAQLIEPTGPMGLVPSQELE 160
+D K +L KE L GDI+ I Q D NW++ E G +G+ P +E
Sbjct: 7 FDFKAQTL---KE--LPLQKGDIVYIYKQIDQNWYEG---EHHGRVGIFPRSYIE 53
>gnl|CDD|212722 cd11788, SH3_RasGAP, Src Homology 3 domain of Ras GTPase-Activating
Protein 1. RasGAP, also called Ras p21 protein
activator, RASA1, or p120RasGAP, is part of the GAP1
family of GTPase-activating proteins. It is a 120kD
cytosolic protein containing an SH3 domain flanked by
two SH2 domains at the N-terminal end, a pleckstrin
homology (PH) domain, a calcium dependent phospholipid
binding domain (CaLB/C2), and a C-terminal catalytic GAP
domain. It stimulates the GTPase activity of normal RAS
p21. It acts as a positive effector of Ras in tumor
cells. It also functions as a regulator downstream of
tyrosine receptors such as those of PDGF, EGF, ephrin,
and insulin, among others. The SH3 domain of RasGAP is
unable to bind proline-rich sequences but have been
shown to interact with protein partners such as the G3BP
protein, Aurora kinases, and the Calpain small subunit
1. The RasGAP SH3 domain is necessary for the downstream
signaling of Ras and it also influences Rho-mediated
cytoskeletal reorganization. SH3 domains are protein
interaction domains that typically bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 59
Score = 27.0 bits (60), Expect = 4.0
Identities = 14/41 (34%), Positives = 19/41 (46%), Gaps = 1/41 (2%)
Query: 121 LAFNHGDILQILNQKDPNWWQAQLIEPTGPMGLVPSQELEE 161
L+F GDI + N+ + W TG GLV +EE
Sbjct: 19 LSFQKGDIFVVHNELEDGWLWVTS-LRTGESGLVFRDLVEE 58
>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 = 26.7 bits (59), Expect = 4.1
Identities = 14/40 (35%), Positives = 22/40 (55%), Gaps = 3/40 (7%)
Query: 121 LAFNHGDILQILNQKDPNWWQAQLIEPTGPMGLVPSQELE 160
L F DI+ I++QKD + W +L G G P++ +E
Sbjct: 16 LGFRKNDIITIISQKDEHCWVGEL---NGLRGWFPAKFVE 52
>gnl|CDD|182723 PRK10779, PRK10779, zinc metallopeptidase RseP; Provisional.
Length = 449
Score = 29.3 bits (66), Expect = 4.9
Identities = 22/87 (25%), Positives = 38/87 (43%), Gaps = 8/87 (9%)
Query: 11 ILGTGLSPCGLTVEQDANGNLIIARILAGSLIDKQGVLKVGDVILGVNGENVSSPEDLQI 70
+ G+ P G +E ++A + S K G L+ GD I+ V+G+ ++ +
Sbjct: 209 VSSLGIRPRGPQIEP------VLAEVQPNSAASKAG-LQAGDRIVKVDGQPLTQWQTFVT 261
Query: 71 EVVKSDGN-IQFTIAPQGDDASLPIKP 96
V + G + I QG SL + P
Sbjct: 262 LVRDNPGKPLALEIERQGSPLSLTLTP 288
>gnl|CDD|225747 COG3206, GumC, Uncharacterized protein involved in
exopolysaccharide biosynthesis [Cell envelope
biogenesis, outer membrane].
Length = 458
Score = 29.3 bits (66), Expect = 5.0
Identities = 12/56 (21%), Positives = 22/56 (39%), Gaps = 4/56 (7%)
Query: 41 LIDKQGVLKVGDVILGVNGENVSSPEDLQIEVVKSDGNIQFTIAPQGDDASLPIKP 96
L+D + + N SS + +IE+++S ++ I D L P
Sbjct: 57 LVDPRSSSVLVLEDGQSGLPNDSSSLETEIEILQSRSVLEKVI----DKLKLDDDP 108
>gnl|CDD|238491 cd00991, PDZ_archaeal_metalloprotease, PDZ domain of archaeal
zinc metalloprotases, presumably membrane-associated or
integral membrane proteases, which may be involved in
signalling and regulatory mechanisms. May be
responsible for substrate recognition and/or binding,
as most PDZ domains bind C-terminal polypeptides, and
binding to internal (non-C-terminal) polypeptides and
even to lipids has been demonstrated. In this subfamily
of protease-associated PDZ domains a C-terminal
beta-strand forms the peptide-binding groove base, a
circular permutation with respect to PDZ domains found
in Eumetazoan signaling proteins.
Length = 79
Score = 26.9 bits (60), Expect = 5.1
Identities = 10/26 (38%), Positives = 15/26 (57%)
Query: 44 KQGVLKVGDVILGVNGENVSSPEDLQ 69
+ VL GDVI +NG +++ ED
Sbjct: 24 ENAVLHTGDVIYSINGTPITTLEDFM 49
>gnl|CDD|225575 COG3031, PulC, Type II secretory pathway, component PulC
[Intracellular trafficking and secretion].
Length = 275
Score = 28.7 bits (64), Expect = 5.1
Identities = 15/51 (29%), Positives = 33/51 (64%), Gaps = 3/51 (5%)
Query: 39 GSLIDKQGVLKVGDVILGVNGENVSSPEDLQ--IEVVKSDGNIQFTIAPQG 87
GSL K G L+ GD+ + +N +++ PED+ ++++++ ++Q T+ +G
Sbjct: 217 GSLFYKSG-LQRGDIAVAINNLDLTDPEDMFRLLQMLRNMPSLQLTVIRRG 266
>gnl|CDD|233696 TIGR02038, protease_degS, periplasmic serine pepetdase DegS. This
family consists of the periplasmic serine protease DegS
(HhoB), a shorter paralog of protease DO (HtrA, DegP)
and DegQ (HhoA). It is found in E. coli and several
other Proteobacteria of the gamma subdivision. It
contains a trypsin domain and a single copy of PDZ
domain (in contrast to DegP with two copies). A critical
role of this DegS is to sense stress in the periplasm
and partially degrade an inhibitor of sigma(E) [Protein
fate, Degradation of proteins, peptides, and
glycopeptides, Regulatory functions, Protein
interactions].
Length = 351
Score = 29.0 bits (65), Expect = 5.4
Identities = 15/49 (30%), Positives = 25/49 (51%), Gaps = 2/49 (4%)
Query: 48 LKVGDVILGVNGENVSSPEDL--QIEVVKSDGNIQFTIAPQGDDASLPI 94
+ V DVIL +G++V E+L +I + + T+ QG LP+
Sbjct: 296 ILVRDVILKYDGKDVIGAEELMDRIAETRPGSKVMVTVLRQGKQLELPV 344
>gnl|CDD|218668 pfam05636, HIGH_NTase1, HIGH Nucleotidyl Transferase. This family
consists of HIGH Nucleotidyl Transferases.
Length = 389
Score = 28.5 bits (64), Expect = 7.6
Identities = 11/26 (42%), Positives = 17/26 (65%), Gaps = 3/26 (11%)
Query: 242 HNGHLYGTHLDSIREVILSG-KICVL 266
HNGHLY HL+ +++ + KI V+
Sbjct: 14 HNGHLY--HLNEAKKLTKADVKIAVM 37
Score = 28.5 bits (64), Expect = 7.6
Identities = 11/26 (42%), Positives = 17/26 (65%), Gaps = 3/26 (11%)
Query: 346 HNGHLYGTHLDSIREVILSG-KICVL 370
HNGHLY HL+ +++ + KI V+
Sbjct: 14 HNGHLY--HLNEAKKLTKADVKIAVM 37
>gnl|CDD|234035 TIGR02860, spore_IV_B, stage IV sporulation protein B. SpoIVB, the
stage IV sporulation protein B of endospore-forming
bacteria such as Bacillus subtilis, is a serine
proteinase, expressed in the spore (rather than mother
cell) compartment, that participates in a proteolytic
activation cascade for Sigma-K. It appears to be
universal among endospore-forming bacteria and occurs
nowhere else [Cellular processes, Sporulation and
germination].
Length = 402
Score = 28.5 bits (64), Expect = 7.7
Identities = 18/51 (35%), Positives = 28/51 (54%), Gaps = 1/51 (1%)
Query: 48 LKVGDVILGVNGENVSSPEDLQIEVVKSDG-NIQFTIAPQGDDASLPIKPV 97
+++GD IL +NGE + + +DL + K+ G + TI G IKPV
Sbjct: 131 IQIGDRILKINGEKIKNMDDLANLINKAGGEKLTLTIERGGKIIETVIKPV 181
>gnl|CDD|235708 PRK06131, PRK06131, dihydroxy-acid dehydratase; Validated.
Length = 571
Score = 28.2 bits (64), Expect = 9.2
Identities = 9/21 (42%), Positives = 11/21 (52%)
Query: 153 LVPSQELEERRKAFVPPEADY 173
LV +EL RR A+ PP
Sbjct: 514 LVSDEELARRRAAWPPPPPRA 534
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
0.319 0.138 0.421
Gapped
Lambda K H
0.267 0.0813 0.140
Matrix: BLOSUM62
Gap Penalties: Existence: 11, Extension: 1
Number of Sequences: 44354
Number of Hits to DB: 22,965,145
Number of extensions: 2279079
Number of successful extensions: 2215
Number of sequences better than 10.0: 1
Number of HSP's gapped: 2196
Number of HSP's successfully gapped: 188
Length of query: 440
Length of database: 10,937,602
Length adjustment: 100
Effective length of query: 340
Effective length of database: 6,502,202
Effective search space: 2210748680
Effective search space used: 2210748680
Neighboring words threshold: 11
Window for multiple hits: 40
X1: 16 ( 7.4 bits)
X2: 38 (14.6 bits)
X3: 64 (24.7 bits)
S1: 41 (21.7 bits)
S2: 60 (26.7 bits)