RPS-BLAST 2.2.26 [Sep-21-2011]
Database: CDD.v3.10
44,354 sequences; 10,937,602 total letters
Searching..................................................done
Query= psy12864
(147 letters)
>gnl|CDD|212786 cd11852, SH3_Kalirin_1, First Src homology 3 domain of the RhoGEF
kinase, Kalirin. Kalirin, also called Duo, Duet, or
TRAD, is a large neuronal dual Rho guanine nucleotide
exchange factor (RhoGEF) that activates Rac1, RhoA, and
RhoG using two RhoGEF domains. Kalirin exists in many
isoforms generated by alternative splicing and the use
of multiple promoters; the major isoforms are kalirin-7,
-9, and -12, which differ at their C-terminal ends.
Kalirin-12, the longest isoform, contains an N-terminal
Sec14p domain, spectrin-like repeats, two RhoGEF
domains, two SH3 domains, as well as Ig, FNIII, and
kinase domains at the C-terminal end. Kalirin-7 contains
only a single RhoGEF domain and does not contain an SH3
domain. Kalirin, through its many isoforms, interacts
with many different proteins and is able to localize to
different locations within the cell. It influences
neurite initiation, axon growth, dendritic
morphogenesis, vesicle trafficking, neuronal
maintenance, and neurodegeneration. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 62
Score = 74.0 bits (182), Expect = 1e-18
Identities = 28/62 (45%), Positives = 39/62 (62%), Gaps = 2/62 (3%)
Query: 43 EMTWVLADYTATNTTELSVHKGQQVEVVHNSSAPPDWALVRLSLGEECS--EGLVPTCVL 100
E+T V+ D+ AT++ EL+V KGQ VEV+ S+ PDW LVR + EGLVP+ +L
Sbjct: 1 ELTVVIEDFEATSSQELTVSKGQTVEVLERPSSRPDWCLVRTLEQDNSPPQEGLVPSSIL 60
Query: 101 KQ 102
Sbjct: 61 CI 62
Score = 53.6 bits (129), Expect = 1e-10
Identities = 18/38 (47%), Positives = 26/38 (68%)
Query: 1 MTWVLADYTAANTTELSVHKGQQVEVVHNSSAPPDWAL 38
+T V+ D+ A ++ EL+V KGQ VEV+ S+ PDW L
Sbjct: 2 LTVVIEDFEATSSQELTVSKGQTVEVLERPSSRPDWCL 39
>gnl|CDD|212698 cd11764, SH3_Eps8, Src Homology 3 domain of Epidermal growth factor
receptor kinase substrate 8 and similar proteins. This
group is composed of Eps8 and Eps8-like proteins
including Eps8-like 1-3, among others. These proteins
contain N-terminal Phosphotyrosine-binding (PTB),
central SH3, and C-terminal effector domains. Eps8 binds
either Abi1 (also called E3b1) or Rab5 GTPase activating
protein RN-tre through its SH3 domain. With Abi1 and
Sos1, it becomes part of a trimeric complex that is
required to activate Rac. Together with RN-tre, it
inhibits the internalization of EGFR. The SH3 domains of
Eps8 and similar proteins recognize peptides containing
a PxxDY motif, instead of the classical PxxP motif. SH3
domains are protein interaction domains that usually
bind to proline-rich ligands with moderate affinity and
selectivity. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 54
Score = 43.4 bits (103), Expect = 6e-07
Identities = 24/54 (44%), Positives = 32/54 (59%), Gaps = 6/54 (11%)
Query: 47 VLADYTATNTTELSVHKGQQVEVVHNSSAPPDWALVRLSLGEECSEGLVPTCVL 100
VL D+TA N+ ELSV KG+ +EV+ +S W VR S G+ G VP +L
Sbjct: 4 VLYDFTARNSKELSVLKGEYLEVLDDSR---QWWKVRNSRGQ---VGYVPHNIL 51
Score = 36.5 bits (85), Expect = 3e-04
Identities = 15/27 (55%), Positives = 21/27 (77%)
Query: 4 VLADYTAANTTELSVHKGQQVEVVHNS 30
VL D+TA N+ ELSV KG+ +EV+ +S
Sbjct: 4 VLYDFTARNSKELSVLKGEYLEVLDDS 30
>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 = 43.3 bits (103), Expect = 9e-07
Identities = 20/51 (39%), Positives = 25/51 (49%), Gaps = 5/51 (9%)
Query: 47 VLADYTATNTTELSVHKGQQVEVVHNSSAPPDWALVRLSLGEECSEGLVPT 97
L DYTA + ELS KG + V+ S W RL G+ EGL P+
Sbjct: 7 ALYDYTAQDPDELSFKKGDIITVLEKSD--DGWWKGRLGRGK---EGLFPS 52
Score = 35.2 bits (82), Expect = 0.001
Identities = 14/36 (38%), Positives = 17/36 (47%), Gaps = 2/36 (5%)
Query: 4 VLADYTAANTTELSVHKGQQVEVVHNSSAPPDWALG 39
L DYTA + ELS KG + V+ S W G
Sbjct: 7 ALYDYTAQDPDELSFKKGDIITVLEKSD--DGWWKG 40
>gnl|CDD|212690 cd00174, SH3, Src Homology 3 domain superfamily. Src Homology 3
(SH3) domains are protein interaction domains that bind
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. Thus, they
are referred to as proline-recognition domains (PRDs).
SH3 domains are less selective and show more diverse
specificity compared to other PRDs. They have been
shown to bind peptide sequences that lack the PxxP
motif; examples include the PxxDY motif of Eps8 and the
RKxxYxxY sequence in SKAP55. SH3 domain containing
proteins play versatile and diverse roles in the cell,
including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies, among others. Many members of this
superfamily are adaptor proteins that associate with a
number of protein partners, facilitating complex
formation and signal transduction.
Length = 51
Score = 42.8 bits (102), Expect = 1e-06
Identities = 16/50 (32%), Positives = 19/50 (38%), Gaps = 5/50 (10%)
Query: 47 VLADYTATNTTELSVHKGQQVEVVHNSSAPPDWALVRLSLGEECSEGLVP 96
L DY A + ELS KG + V+ W L EGL P
Sbjct: 4 ALYDYEAQDDDELSFKKGDIITVLEKDD--DGWWEGEL---NGGREGLFP 48
Score = 37.8 bits (89), Expect = 7e-05
Identities = 12/36 (33%), Positives = 15/36 (41%), Gaps = 2/36 (5%)
Query: 4 VLADYTAANTTELSVHKGQQVEVVHNSSAPPDWALG 39
L DY A + ELS KG + V+ W G
Sbjct: 4 ALYDYEAQDDDELSFKKGDIITVLEKDD--DGWWEG 37
>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 = 40.6 bits (96), Expect = 6e-06
Identities = 20/51 (39%), Positives = 25/51 (49%), Gaps = 5/51 (9%)
Query: 47 VLADYTATNTTELSVHKGQQVEVVHNSSAPPDWALVRLSLGEECSEGLVPT 97
L DYTA ELS KG + V+ S W RL G+ EGL+P+
Sbjct: 2 ALYDYTAREPDELSFKKGDIIIVLEKS--DDGWWKGRLKGGK---EGLIPS 47
Score = 30.6 bits (70), Expect = 0.033
Identities = 14/36 (38%), Positives = 16/36 (44%), Gaps = 2/36 (5%)
Query: 4 VLADYTAANTTELSVHKGQQVEVVHNSSAPPDWALG 39
L DYTA ELS KG + V+ S W G
Sbjct: 2 ALYDYTAREPDELSFKKGDIIIVLEKS--DDGWWKG 35
>gnl|CDD|212790 cd11856, SH3_p47phox_like, Src homology 3 domains of the p47phox
subunit of NADPH oxidase and similar domains. This
family is composed of the tandem SH3 domains of p47phox
subunit of NADPH oxidase and Nox Organizing protein 1
(NoxO1), the four SH3 domains of Tks4 (Tyr kinase
substrate with four SH3 domains), the five SH3 domains
of Tks5, the SH3 domain of obscurin, Myosin-I, and
similar domains. Most members of this group also
contain Phox homology (PX) domains, except for obscurin
and Myosin-I. p47phox and NoxO1 are regulators of the
phagocytic NADPH oxidase complex (also called Nox2 or
gp91phox) and nonphagocytic NADPH oxidase Nox1,
respectively. They play roles in the activation of
their respective NADPH oxidase, which catalyzes the
transfer of electrons from NADPH to molecular oxygen to
form superoxide. Tks proteins are Src substrates and
scaffolding proteins that play important roles in the
formation of podosomes and invadopodia, the dynamic
actin-rich structures that are related to cell
migration and cancer cell invasion. Obscurin is a giant
muscle protein that plays important roles in the
organization and assembly of the myofibril and the
sarcoplasmic reticulum. Type I myosins (Myosin-I) are
actin-dependent motors in endocytic actin structures
and actin patches. They play roles in membrane traffic
in endocytic and secretory pathways, cell motility, and
mechanosensing. Myosin-I contains an N-terminal
actin-activated ATPase, a phospholipid-binding TH1
(tail homology 1) domain, and a C-terminal extension
which includes an F-actin-binding TH2 domain, an SH3
domain, and an acidic peptide that participates in
activating the Arp2/3complex. The SH3 domain of
myosin-I is required for myosin-I-induced actin
polymerization. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP
motifs. They play versatile and diverse roles in the
cell including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 53
Score = 40.7 bits (96), Expect = 7e-06
Identities = 17/50 (34%), Positives = 24/50 (48%), Gaps = 6/50 (12%)
Query: 47 VLADYTATNTTELSVHKGQQVEVVHNSSAPPDWALVRLSLGEECSEGLVP 96
+ADY A E+S+ +G+ VEV+ + W VR EG VP
Sbjct: 4 AIADYEAQGDDEISLQEGEVVEVLEKN--DSGWWYVRKGD----KEGWVP 47
Score = 35.3 bits (82), Expect = 7e-04
Identities = 11/33 (33%), Positives = 18/33 (54%), Gaps = 2/33 (6%)
Query: 4 VLADYTAANTTELSVHKGQQVEVVHNSSAPPDW 36
+ADY A E+S+ +G+ VEV+ + W
Sbjct: 4 AIADYEAQGDDEISLQEGEVVEVLEKN--DSGW 34
>gnl|CDD|212845 cd11912, SH3_Bzz1_1, First Src Homology 3 domain of Bzz1 and
similar domains. Bzz1 (or Bzz1p) is a
WASP/Las17-interacting protein involved in endocytosis
and trafficking to the vacuole. It physically interacts
with type I myosins and functions in the early steps of
endocytosis. Together with other proteins, it induces
membrane scission in yeast. Bzz1 contains an N-terminal
F-BAR (FES-CIP4 Homology and Bin/Amphiphysin/Rvs), a
central coiled-coil, and two C-terminal SH3 domains.
This model represents the first C-terminal SH3 domain.
SH3 domains are protein interaction domains that bind
to proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 55
Score = 38.0 bits (89), Expect = 8e-05
Identities = 24/55 (43%), Positives = 31/55 (56%), Gaps = 12/55 (21%)
Query: 47 VLADYTATNTTELSVHKGQQVEVVHNSSAPPD----WALVRLSLGEECSEGLVPT 97
VL DYTA+ E+S+ +G++V V+ PD W VR GE EGLVPT
Sbjct: 4 VLYDYTASGDDEVSISEGEEVTVLE-----PDDGSGWTKVRNGSGE---EGLVPT 50
Score = 26.0 bits (58), Expect = 2.2
Identities = 11/24 (45%), Positives = 18/24 (75%)
Query: 4 VLADYTAANTTELSVHKGQQVEVV 27
VL DYTA+ E+S+ +G++V V+
Sbjct: 4 VLYDYTASGDDEVSISEGEEVTVL 27
>gnl|CDD|212736 cd11802, SH3_Endophilin_B, Src homology 3 domain of Endophilin-B.
Endophilins play roles in synaptic vesicle formation,
virus budding, mitochondrial morphology maintenance,
receptor-mediated endocytosis inhibition, and endosomal
sorting. They are classified into two types, A and B.
Vertebrates contain two endophilin-B isoforms.
Endophilin-B proteins are cytoplasmic proteins
expressed mainly in the heart, placenta, and skeletal
muscle. Endophilins contain an N-terminal N-BAR domain
(BAR domain with an additional N-terminal amphipathic
helix), followed by a variable region containing
proline clusters, and a C-terminal SH3 domain. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 52
Score = 37.3 bits (87), Expect = 2e-04
Identities = 12/36 (33%), Positives = 19/36 (52%)
Query: 4 VLADYTAANTTELSVHKGQQVEVVHNSSAPPDWALG 39
VL DY A ++TELS+ + + V D+ +G
Sbjct: 4 VLYDYDAEDSTELSLLADEVITVYELPGMDEDYMMG 39
Score = 35.3 bits (82), Expect = 8e-04
Identities = 11/33 (33%), Positives = 17/33 (51%)
Query: 47 VLADYTATNTTELSVHKGQQVEVVHNSSAPPDW 79
VL DY A ++TELS+ + + V D+
Sbjct: 4 VLYDYDAEDSTELSLLADEVITVYELPGMDEDY 36
>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 = 35.3 bits (82), Expect = 7e-04
Identities = 19/50 (38%), Positives = 28/50 (56%), Gaps = 6/50 (12%)
Query: 48 LADYTATNTTELSVHKGQQVEVVHNSSAPPDWALVR-LSLGEECSEGLVP 96
L DY A +LS KG +++++ +S DW L R LS G+ EG +P
Sbjct: 5 LYDYEARTDDDLSFKKGDRLQILDDSD--GDWWLARHLSTGK---EGYIP 49
Score = 29.9 bits (68), Expect = 0.070
Identities = 11/32 (34%), Positives = 18/32 (56%), Gaps = 2/32 (6%)
Query: 5 LADYTAANTTELSVHKGQQVEVVHNSSAPPDW 36
L DY A +LS KG +++++ +S DW
Sbjct: 5 LYDYEARTDDDLSFKKGDRLQILDDSD--GDW 34
>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 = 35.5 bits (83), Expect = 7e-04
Identities = 18/51 (35%), Positives = 23/51 (45%), Gaps = 6/51 (11%)
Query: 47 VLADYTATNTTELSVHKGQQVEVVHNSSAPPDWALVRLSLGEECSEGLVPT 97
V+ DY AT+ ELS+ KG V+V W G GLVP+
Sbjct: 4 VIFDYVATDPNELSLKKGDVVKV--LDKDDNGWWEGERG-GR---RGLVPS 48
Score = 32.8 bits (76), Expect = 0.005
Identities = 13/36 (36%), Positives = 17/36 (47%), Gaps = 2/36 (5%)
Query: 4 VLADYTAANTTELSVHKGQQVEVVHNSSAPPDWALG 39
V+ DY A + ELS+ KG V+V W G
Sbjct: 4 VIFDYVATDPNELSLKKGDVVKV--LDKDDNGWWEG 37
>gnl|CDD|212701 cd11767, SH3_Nck_3, Third Src Homology 3 domain of Nck adaptor
proteins. This group contains the third SH3 domain of
Nck, the first SH3 domain of Caenorhabditis elegans
Ced-2 (Cell death abnormality protein 2), and similar
domains. Nck adaptor proteins regulate actin
cytoskeleton dynamics by linking proline-rich effector
molecules to protein tyrosine kinases and
phosphorylated signaling intermediates. They contain
three SH3 domains and a C-terminal SH2 domain. They
function downstream of the PDGFbeta receptor and are
involved in Rho GTPase signaling and actin dynamics.
Vertebrates contain two Nck adaptor proteins: Nck1
(also called Nckalpha) and Nck2 (also called Nckbeta or
Growth factor receptor-bound protein 4, Grb4), which
show partly overlapping functions but also bind
distinct targets. Their SH3 domains are involved in
recruiting downstream effector molecules, such as the
N-WASP/Arp2/3 complex, which when activated induces
actin polymerization that results in the production of
pedestals, or protrusions of the plasma membrane. The
third SH3 domain of Nck appears to prefer ligands with
a PxAPxR motif. SH3 domains are protein interaction
domains that usually bind to proline-rich ligands with
moderate affinity and selectivity, preferentially a
PxxP motif. Ced-2 is a cell corpse engulfment protein
that interacts with Ced-5 in a pathway that regulates
the activation of Ced-10, a Rac small GTPase.
Length = 56
Score = 34.2 bits (79), Expect = 0.002
Identities = 18/47 (38%), Positives = 25/47 (53%), Gaps = 3/47 (6%)
Query: 51 YTATNTTELSVHKGQQVEVVHNSSAPPDWALVRLSLGEECSEGLVPT 97
+T N ELS KG+++E++ PDW R +LG GLVP
Sbjct: 8 FTGENDEELSFEKGERLEIIEKPEDDPDWWKARNALGT---TGLVPR 51
Score = 26.1 bits (58), Expect = 2.3
Identities = 11/29 (37%), Positives = 17/29 (58%)
Query: 8 YTAANTTELSVHKGQQVEVVHNSSAPPDW 36
+T N ELS KG+++E++ PDW
Sbjct: 8 FTGENDEELSFEKGERLEIIEKPEDDPDW 36
>gnl|CDD|212734 cd11800, SH3_DNMBP_C2_like, Second C-terminal Src homology 3
domain of Dynamin Binding Protein, also called Tuba,
and similar domains. DNMBP or Tuba is a cdc42-specific
guanine nucleotide exchange factor (GEF) that contains
four N-terminal SH3 domains, a central RhoGEF [or Dbl
homology (DH)] domain followed by a Bin/Amphiphysin/Rvs
(BAR) domain, and two C-terminal SH3 domains. It
provides a functional link between dynamin, Rho GTPase
signaling, and actin dynamics. It plays an important
role in regulating cell junction configuration. The
C-terminal SH3 domains of DNMBP bind to N-WASP and
Ena/VASP proteins, which are key regulatory proteins of
the actin cytoskeleton. Also included in this subfamily
is the second C-terminal SH3 domain of Rho guanine
nucleotide exchange factor 37 (ARHGEF37), whose
function is still unknown. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles
in the cell including the regulation of enzymes,
changing the subcellular localization of signaling
pathway components, and mediating the formation of
multiprotein complex assemblies.
Length = 57
Score = 33.9 bits (78), Expect = 0.003
Identities = 14/35 (40%), Positives = 20/35 (57%), Gaps = 2/35 (5%)
Query: 50 DYTATNTTELSVHKGQQVEVV--HNSSAPPDWALV 82
+ A + ELSV +GQ V V+ H+ P+W LV
Sbjct: 7 TFEARSPGELSVTEGQVVTVLEKHDLKGNPEWWLV 41
Score = 30.8 bits (70), Expect = 0.045
Identities = 13/34 (38%), Positives = 19/34 (55%), Gaps = 2/34 (5%)
Query: 7 DYTAANTTELSVHKGQQVEVV--HNSSAPPDWAL 38
+ A + ELSV +GQ V V+ H+ P+W L
Sbjct: 7 TFEARSPGELSVTEGQVVTVLEKHDLKGNPEWWL 40
>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 = 33.0 bits (75), Expect = 0.005
Identities = 16/33 (48%), Positives = 19/33 (57%), Gaps = 2/33 (6%)
Query: 7 DYTAANTTELSVHKGQQVEVVHNSSAPPDWALG 39
DYTA N ELS KGQ + V++ PDW G
Sbjct: 8 DYTANNEDELSFSKGQLINVLNKDD--PDWWQG 38
Score = 31.9 bits (72), Expect = 0.014
Identities = 15/30 (50%), Positives = 18/30 (60%), Gaps = 2/30 (6%)
Query: 50 DYTATNTTELSVHKGQQVEVVHNSSAPPDW 79
DYTA N ELS KGQ + V++ PDW
Sbjct: 8 DYTANNEDELSFSKGQLINVLNKDD--PDW 35
>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 = 32.5 bits (74), Expect = 0.009
Identities = 13/36 (36%), Positives = 22/36 (61%), Gaps = 2/36 (5%)
Query: 5 LADYTAANTTELSVHKGQQVEVVHNSSAPPDWALGS 40
L DYTA + EL++H+G + V++ + +W GS
Sbjct: 5 LYDYTANRSDELTIHRGDIIRVLYKDN--DNWWFGS 38
Score = 32.1 bits (73), Expect = 0.014
Identities = 13/42 (30%), Positives = 24/42 (57%), Gaps = 2/42 (4%)
Query: 48 LADYTATNTTELSVHKGQQVEVVHNSSAPPDWALVRLSLGEE 89
L DYTA + EL++H+G + V++ + +W L G++
Sbjct: 5 LYDYTANRSDELTIHRGDIIRVLYKDN--DNWWFGSLVNGQQ 44
>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 = 31.9 bits (73), Expect = 0.014
Identities = 13/49 (26%), Positives = 22/49 (44%), Gaps = 5/49 (10%)
Query: 48 LADYTATNTTELSVHKGQQVEVVHNSSAPPDWALVRLSLGEECSEGLVP 96
L D+ +L + KG++ V+ +S+ W R G EG +P
Sbjct: 5 LYDFQPIEPGDLPLEKGEEYVVLDDSN--EHWWRARDKNGN---EGYIP 48
>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 = 31.2 bits (71), Expect = 0.023
Identities = 13/24 (54%), Positives = 15/24 (62%)
Query: 4 VLADYTAANTTELSVHKGQQVEVV 27
VL DYTA ELS+ KG V V+
Sbjct: 4 VLYDYTAQEDDELSISKGDVVAVI 27
Score = 30.4 bits (69), Expect = 0.056
Identities = 13/24 (54%), Positives = 15/24 (62%)
Query: 47 VLADYTATNTTELSVHKGQQVEVV 70
VL DYTA ELS+ KG V V+
Sbjct: 4 VLYDYTAQEDDELSISKGDVVAVI 27
>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 = 31.3 bits (71), Expect = 0.026
Identities = 14/47 (29%), Positives = 22/47 (46%), Gaps = 7/47 (14%)
Query: 50 DYTATNTTELSVHKGQQVEVVHNSSAPPDWALVRLSLGEECSEGLVP 96
D+TA+ ELS KG ++++ + W L+ EG VP
Sbjct: 7 DFTASGEDELSFKKGDVLKILSSDD---IWFKAELN----GEEGYVP 46
Score = 26.3 bits (58), Expect = 1.8
Identities = 9/30 (30%), Positives = 16/30 (53%), Gaps = 3/30 (10%)
Query: 7 DYTAANTTELSVHKGQQVEVVHNSSAPPDW 36
D+TA+ ELS KG ++++ + W
Sbjct: 7 DFTASGEDELSFKKGDVLKILSSDD---IW 33
>gnl|CDD|212709 cd11775, SH3_Sla1p_3, Third Src Homology 3 domain of the fungal
endocytic adaptor protein Sla1p. Sla1p facilitates
endocytosis by playing a role as an adaptor protein in
coupling components of the actin cytoskeleton to the
endocytic machinery. It interacts with Abp1p, Las17p
and Pan1p, which are activator proteins of
actin-related protein 2/3 (Arp2/3). Sla1p contains
multiple domains including three SH3 domains, a SAM
(sterile alpha motif) domain, and a Sla1 homology
domain 1 (SHD1), which binds to the NPFXD motif that is
found in many integral membrane proteins such as the
Golgi-localized Arf-binding protein Lsb5p and the
P4-ATPases, Drs2p and Dnf1p. The third SH3 domain of
Sla1p can bind ubiquitin while retaining the ability to
bind proline-rich ligands; monoubiquitination of target
proteins signals internalization and sorting through
the endocytic pathway. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles
in the cell including the regulation of enzymes,
changing the subcellular localization of signaling
pathway components, and mediating the formation of
multiprotein complex assemblies.
Length = 57
Score = 30.4 bits (69), Expect = 0.065
Identities = 18/55 (32%), Positives = 29/55 (52%), Gaps = 5/55 (9%)
Query: 43 EMTWVLADYTATNTTELSVHKGQQVEVVHNSSAPPDWALVRL-SLGEECSEGLVP 96
+ VL D+ A + EL+V +G V ++ + DW +V S G+ EG+VP
Sbjct: 1 KRGKVLYDFDAQSDDELTVKEGDVVYIL-DDKKSKDWWMVENVSTGK---EGVVP 51
Score = 25.0 bits (55), Expect = 4.7
Identities = 11/33 (33%), Positives = 18/33 (54%), Gaps = 1/33 (3%)
Query: 4 VLADYTAANTTELSVHKGQQVEVVHNSSAPPDW 36
VL D+ A + EL+V +G V ++ + DW
Sbjct: 5 VLYDFDAQSDDELTVKEGDVVYIL-DDKKSKDW 36
>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 = 30.3 bits (68), Expect = 0.068
Identities = 15/35 (42%), Positives = 20/35 (57%), Gaps = 2/35 (5%)
Query: 5 LADYTAANTTELSVHKGQQVEVVHNSSAPPDWALG 39
+ DYTA N EL+ KGQ + V+ + PDW G
Sbjct: 6 MYDYTAQNDDELAFSKGQIINVL--NKEDPDWWKG 38
Score = 29.9 bits (67), Expect = 0.077
Identities = 14/32 (43%), Positives = 19/32 (59%), Gaps = 2/32 (6%)
Query: 48 LADYTATNTTELSVHKGQQVEVVHNSSAPPDW 79
+ DYTA N EL+ KGQ + V+ + PDW
Sbjct: 6 MYDYTAQNDDELAFSKGQIINVL--NKEDPDW 35
>gnl|CDD|212877 cd11944, SH3_Endophilin_B2, Src homology 3 domain of
Endophilin-B2. Endophilin-B2, also called SH3GLB2
(SH3-domain GRB2-like endophilin B2), is a cytoplasmic
protein that interacts with the apoptosis inducer Bax.
It is overexpressed in prostate cancer metastasis and
has been identified as a cancer antigen with potential
utility in immunotherapy. Endophilins play roles in
synaptic vesicle formation, virus budding,
mitochondrial morphology maintenance, receptor-mediated
endocytosis inhibition, and endosomal sorting. They
contain an N-terminal N-BAR domain (BAR domain with an
additional N-terminal amphipathic helix), followed by a
variable region containing proline clusters, and a
C-terminal SH3 domain. Endophilin-B2 forms homo- and
heterodimers (with endophilin-B1) through its BAR
domain. The related protein endophilin-B1 interacts
with amphiphysin 1 and dynamin 1 through its SH3
domain. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP
motifs. They play versatile and diverse roles in the
cell including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 55
Score = 30.0 bits (67), Expect = 0.072
Identities = 13/36 (36%), Positives = 21/36 (58%)
Query: 4 VLADYTAANTTELSVHKGQQVEVVHNSSAPPDWALG 39
VL DY AA+++EL++ + + V PDW +G
Sbjct: 4 VLYDYEAADSSELALLADELITVYSLPGMDPDWLIG 39
Score = 26.1 bits (57), Expect = 1.8
Identities = 11/33 (33%), Positives = 18/33 (54%)
Query: 47 VLADYTATNTTELSVHKGQQVEVVHNSSAPPDW 79
VL DY A +++EL++ + + V PDW
Sbjct: 4 VLYDYEAADSSELALLADELITVYSLPGMDPDW 36
>gnl|CDD|212844 cd11911, SH3_CIP4-like, Src Homology 3 domain of Cdc42-Interacting
Protein 4. This subfamily is composed of
Cdc42-Interacting Protein 4 (CIP4), Formin Binding
Protein 17 (FBP17), FormiN Binding Protein 1-Like
(FNBP1L), and similar proteins. CIP4 and FNBP1L are
Cdc42 effectors that bind Wiskott-Aldrich syndrome
protein (WASP) and function in endocytosis. CIP4 and
FBP17 bind to the Fas ligand and may be implicated in
the inflammatory response. CIP4 may also play a role in
phagocytosis. It functions downstream of Cdc42 in
PDGF-dependent actin reorganization and cell migration,
and also regulates the activity of PDGFRbeta. It uses
Src as a substrate in regulating the invasiveness of
breast tumor cells. CIP4 may also play a role in the
pathogenesis of Huntington's disease. Members of this
subfamily typically contain an N-terminal F-BAR
(FES-CIP4 Homology and Bin/Amphiphysin/Rvs) domain, a
central Cdc42-binding HR1 domain, and a C-terminal SH3
domain. The SH3 domain of CIP4 associates with Gapex-5,
a Rab31 GEF. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate affinity
and selectivity, preferentially to PxxP motifs. They
play versatile and diverse roles in the cell including
the regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 55
Score = 29.9 bits (68), Expect = 0.079
Identities = 16/56 (28%), Positives = 25/56 (44%), Gaps = 6/56 (10%)
Query: 47 VLADYTATNTTELSVHKGQQVEVVHNSSAPPD-WALVRLSLGEECSEGLVPTCVLK 101
L D+ T+ LS+ +G+ + V+ D W VR EG VPT ++
Sbjct: 4 ALYDFDGTSEGTLSMEEGEILLVLEEDGG--DGWTRVRK---NNGDEGYVPTSYIE 54
>gnl|CDD|212695 cd11761, SH3_FCHSD_1, First Src Homology 3 domain of FCH and
double SH3 domains proteins. This group is composed of
FCH and double SH3 domains protein 1 (FCHSD1) and
FCHSD2. These proteins have a common domain structure
consisting of an N-terminal F-BAR (FES-CIP4 Homology
and Bin/Amphiphysin/Rvs), two SH3, and C-terminal
proline-rich domains. They have only been characterized
in silico and their functions remain unknown. This
group also includes the insect protein, nervous wreck,
which acts as a regulator of synaptic growth signaling.
SH3 domains are protein interaction domains that bind
to proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 57
Score = 30.0 bits (68), Expect = 0.082
Identities = 16/50 (32%), Positives = 24/50 (48%), Gaps = 4/50 (8%)
Query: 47 VLADYTATNTTELSVHKGQQVEVVHNSSAPPDWALVRLSLGEECSEGLVP 96
VL Y A EL++ +G+++EV+ + W R GE G VP
Sbjct: 6 VLYSYEAQRPDELTITEGEELEVIEDGDG-DGWVKARNKSGE---VGYVP 51
Score = 26.6 bits (59), Expect = 1.4
Identities = 9/24 (37%), Positives = 16/24 (66%)
Query: 4 VLADYTAANTTELSVHKGQQVEVV 27
VL Y A EL++ +G+++EV+
Sbjct: 6 VLYSYEAQRPDELTITEGEELEVI 29
>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 = 29.6 bits (67), Expect = 0.086
Identities = 17/47 (36%), Positives = 24/47 (51%), Gaps = 5/47 (10%)
Query: 50 DYTATNTTELSVHKGQQVEVVHNSSAPPDWALVRLSLGEECSEGLVP 96
D+ AT ELS KG ++V+ N P+W L + EGL+P
Sbjct: 7 DFKATAEDELSFKKGSILKVL-NMEDDPNWYKAEL----DGKEGLIP 48
>gnl|CDD|212770 cd11836, SH3_Intersectin_1, First Src homology 3 domain (or SH3A)
of Intersectin. Intersectins (ITSNs) are adaptor
proteins that function in exo- and endocytosis, actin
cytoskeletal reorganization, and signal transduction.
They are essential for initiating clathrin-coated pit
formation. They bind to many proteins through their
multidomain structure and facilitate the assembly of
multimeric complexes. Vertebrates contain two ITSN
proteins, ITSN1 and ITSN2, which exist in alternatively
spliced short and long isoforms. The short isoforms
contain two Eps15 homology domains (EH1 and EH2), a
coiled-coil region and five SH3 domains (SH3A-E), while
the long isoforms, in addition, contain RhoGEF (also
called Dbl-homologous or DH), Pleckstrin homology (PH)
and C2 domains. ITSN1 and ITSN2 are both widely
expressed, with variations depending on tissue type and
stage of development. The first SH3 domain (or SH3A) of
ITSN1 has been shown to bind many proteins including
Sos1, dynamin1/2, CIN85, c-Cbl, PI3K-C2, SHIP2, N-WASP,
and CdGAP, among others. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles
in the cell including the regulation of enzymes,
changing the subcellular localization of signaling
pathway components, and mediating the formation of
multiprotein complex assemblies.
Length = 55
Score = 29.6 bits (67), Expect = 0.095
Identities = 11/37 (29%), Positives = 16/37 (43%)
Query: 4 VLADYTAANTTELSVHKGQQVEVVHNSSAPPDWALGS 40
L + A N E+S G ++V + A P W G
Sbjct: 4 ALYAFEARNPDEISFQPGDIIQVDESQVAEPGWLAGE 40
Score = 29.2 bits (66), Expect = 0.16
Identities = 10/33 (30%), Positives = 15/33 (45%)
Query: 47 VLADYTATNTTELSVHKGQQVEVVHNSSAPPDW 79
L + A N E+S G ++V + A P W
Sbjct: 4 ALYAFEARNPDEISFQPGDIIQVDESQVAEPGW 36
>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 = 29.3 bits (66), Expect = 0.13
Identities = 11/38 (28%), Positives = 19/38 (50%), Gaps = 2/38 (5%)
Query: 47 VLADYTATNTTELSVHKGQQVEVVHNSSAPPDWALVRL 84
+AD+ AT+ ++LS G ++ V+ S DW
Sbjct: 4 AIADFVATDDSQLSFESGDKLLVLRKPSV--DWWWAEH 39
Score = 27.4 bits (61), Expect = 0.74
Identities = 10/33 (30%), Positives = 18/33 (54%), Gaps = 2/33 (6%)
Query: 4 VLADYTAANTTELSVHKGQQVEVVHNSSAPPDW 36
+AD+ A + ++LS G ++ V+ S DW
Sbjct: 4 AIADFVATDDSQLSFESGDKLLVLRKPSV--DW 34
>gnl|CDD|212878 cd11945, SH3_Endophilin_B1, Src homology 3 domain of
Endophilin-B1. Endophilin-B1, also called
Bax-interacting factor 1 (Bif-1) or SH3GLB1 (SH3-domain
GRB2-like endophilin B1), is localized mainly to the
Golgi apparatus. It is involved in the regulation of
many biological events including autophagy,
tumorigenesis, nerve growth factor (NGF) trafficking,
neurite outgrowth, mitochondrial outer membrane
dynamics, and cell death. Endophilins play roles in
synaptic vesicle formation, virus budding,
mitochondrial morphology maintenance, receptor-mediated
endocytosis inhibition, and endosomal sorting. They
contain an N-terminal N-BAR domain (BAR domain with an
additional N-terminal amphipathic helix), followed by a
variable region containing proline clusters, and a
C-terminal SH3 domain. Endophilin-B1 forms homo- and
heterodimers (with endophilin-B2) through its BAR
domain. It interacts with amphiphysin 1 and dynamin 1
through its SH3 domain. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles
in the cell including the regulation of enzymes,
changing the subcellular localization of signaling
pathway components, and mediating the formation of
multiprotein complex assemblies.
Length = 61
Score = 29.6 bits (66), Expect = 0.14
Identities = 15/36 (41%), Positives = 20/36 (55%)
Query: 4 VLADYTAANTTELSVHKGQQVEVVHNSSAPPDWALG 39
VL DY AAN+TELS+ + + V DW +G
Sbjct: 8 VLYDYDAANSTELSLLADEVITVYSVPGMDSDWLMG 43
Score = 26.1 bits (57), Expect = 2.0
Identities = 15/42 (35%), Positives = 20/42 (47%)
Query: 40 SGIEMTWVLADYTATNTTELSVHKGQQVEVVHNSSAPPDWAL 81
SG VL DY A N+TELS+ + + V DW +
Sbjct: 1 SGSRKARVLYDYDAANSTELSLLADEVITVYSVPGMDSDWLM 42
>gnl|CDD|212784 cd11850, SH3_Abl, Src homology 3 domain of the Protein Tyrosine
Kinase, Abelson kinase. Abl (or c-Abl) is a
ubiquitously-expressed cytoplasmic (or nonreceptor) PTK
that contains SH3, SH2, and tyr kinase domains in its
N-terminal region, as well as nuclear localization
motifs, a putative DNA-binding domain, and F- and
G-actin binding domains in its C-terminal tail. It also
contains a short autoinhibitory cap region in its
N-terminus. Abl function depends on its subcellular
localization. In the cytoplasm, Abl plays a role in
cell proliferation and survival. In response to DNA
damage or oxidative stress, Abl is transported to the
nucleus where it induces apoptosis. In chronic
myelogenous leukemia (CML) patients, an aberrant
translocation results in the replacement of the first
exon of Abl with the BCR (breakpoint cluster region)
gene. The resulting BCR-Abl fusion protein is
constitutively active and associates into tetramers,
resulting in a hyperactive kinase sending a continuous
signal. This leads to uncontrolled proliferation,
morphological transformation and anti-apoptotic
effects. BCR-Abl is the target of selective inhibitors,
such as imatinib (Gleevec), used in the treatment of
CML. Abl2, also known as ARG (Abelson-related gene), is
thought to play a cooperative role with Abl in the
proper development of the nervous system. The Tel-ARG
fusion protein, resulting from reciprocal translocation
between chromosomes 1 and 12, is associated with acute
myeloid leukemia (AML). SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles
in the cell including the regulation of enzymes,
changing the subcellular localization of signaling
pathway components, and mediating the formation of
multiprotein complex assemblies.
Length = 56
Score = 29.3 bits (66), Expect = 0.15
Identities = 13/51 (25%), Positives = 24/51 (47%), Gaps = 3/51 (5%)
Query: 47 VLADYTATNTTELSVHKGQQVEVVHNSSAPPDWALVRLSLGEECSEGLVPT 97
L D+ A+ +LS+ KG+Q+ V+ + +W +G VP+
Sbjct: 4 ALYDFVASGENQLSIKKGEQLRVL-GYNKNGEWCEAESKSTGG--QGWVPS 51
Score = 28.9 bits (65), Expect = 0.22
Identities = 14/54 (25%), Positives = 25/54 (46%), Gaps = 4/54 (7%)
Query: 4 VLADYTAANTTELSVHKGQQVEVVHNSSAPPDWA---LGSGIEMTWVLADYTAT 54
L D+ A+ +LS+ KG+Q+ V+ + +W S WV ++Y
Sbjct: 4 ALYDFVASGENQLSIKKGEQLRVL-GYNKNGEWCEAESKSTGGQGWVPSNYITP 56
>gnl|CDD|212957 cd12024, SH3_NoxO1_2, Second or C-terminal Src homology 3 domain of
NADPH oxidase (Nox) Organizing protein 1. Nox
Organizing protein 1 (NoxO1) is a critical regulator of
enzyme kinetics of the nonphagocytic NADPH oxidase Nox1,
which catalyzes the transfer of electrons from NADPH to
molecular oxygen to form superoxide. Nox1 is expressed
in colon, stomach, uterus, prostate, and vascular smooth
muscle cells. NoxO1 is involved in targeting activator
subunits (such as NoxA1) to Nox1. It is co-localized
with Nox1 in the membranes of resting cells and directs
the subcellular localization of Nox1. NoxO1 contains an
N-terminal Phox homology (PX) domain, tandem SH3 domains
(N-SH3 and C-SH3), and a C-terminal proline-rich region
(PRR). This model characterizes the second SH3 domain
(or C-SH3) of NoxO1. The tandem SH3 domains of NoxO1
interact with the PRR of p22phox, which also complexes
with Nox1. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate affinity
and selectivity, preferentially to PxxP motifs. They
play versatile and diverse roles in the cell including
the regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 53
Score = 28.8 bits (65), Expect = 0.17
Identities = 19/51 (37%), Positives = 24/51 (47%), Gaps = 6/51 (11%)
Query: 51 YTATNTTELSVHKGQQVEVVHNSSAPPDWALVRLSLGEECSEGLVPTCVLK 101
Y A ELSV G VEV+ S W L+R + G G VP+ L+
Sbjct: 8 YEAQKEDELSVPAGVVVEVLQKSDN--GWWLIRYN-GR---AGYVPSMYLQ 52
Score = 25.0 bits (55), Expect = 4.7
Identities = 11/23 (47%), Positives = 12/23 (52%)
Query: 8 YTAANTTELSVHKGQQVEVVHNS 30
Y A ELSV G VEV+ S
Sbjct: 8 YEAQKEDELSVPAGVVVEVLQKS 30
>gnl|CDD|212792 cd11858, SH3_Myosin-I_fungi, Src homology 3 domain of Type I fungal
Myosins. Type I myosins (myosin-I) are actin-dependent
motors in endocytic actin structures and actin patches.
They play roles in membrane traffic in endocytic and
secretory pathways, cell motility, and mechanosensing.
Saccharomyces cerevisiae has two myosins-I, Myo3 and
Myo5, which are involved in endocytosis and the
polarization of the actin cytoskeleton. Myosin-I
contains an N-terminal actin-activated ATPase, a
phospholipid-binding TH1 (tail homology 1) domain, and a
C-terminal extension which includes an F-actin-binding
TH2 domain, an SH3 domain, and an acidic peptide that
participates in activating the Arp2/3complex. The SH3
domain of myosin-I is required for myosin-I-induced
actin polymerization. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 55
Score = 28.9 bits (65), Expect = 0.17
Identities = 16/55 (29%), Positives = 22/55 (40%), Gaps = 4/55 (7%)
Query: 47 VLADYTATNTTELSVHKGQQVEVVHNSSAPPDWALVRLSLGEECSEGLVPTCVLK 101
L D+ + ELS+ K V +V W L +E EG VP L+
Sbjct: 4 ALYDFAGSVANELSLKKDDIVYIVQKE--DNGWWLA--KKLDESKEGWVPAAYLE 54
Score = 25.0 bits (55), Expect = 4.2
Identities = 14/51 (27%), Positives = 21/51 (41%), Gaps = 5/51 (9%)
Query: 4 VLADYTAANTTELSVHKGQQVEVVHNSSAPPDWALGSGIEMT---WVLADY 51
L D+ + ELS+ K V +V W L ++ + WV A Y
Sbjct: 4 ALYDFAGSVANELSLKKDDIVYIVQKE--DNGWWLAKKLDESKEGWVPAAY 52
>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 = 29.2 bits (65), Expect = 0.18
Identities = 18/58 (31%), Positives = 27/58 (46%), Gaps = 5/58 (8%)
Query: 44 MTWVLADYTATNTTELSVHKGQQVEVV-HNSSAPPDWALVRLSLGEECSEGLVPTCVL 100
M + L DY A N ELS +G + ++ + +W RL+ EG VP +L
Sbjct: 2 MVYALWDYEAQNADELSFQEGDAITILRRKDDSETEWWWARLN----DKEGYVPKNLL 55
Score = 26.1 bits (57), Expect = 2.0
Identities = 10/27 (37%), Positives = 15/27 (55%)
Query: 1 MTWVLADYTAANTTELSVHKGQQVEVV 27
M + L DY A N ELS +G + ++
Sbjct: 2 MVYALWDYEAQNADELSFQEGDAITIL 28
>gnl|CDD|212780 cd11846, SH3_Srms, Src homology 3 domain of Srms Protein Tyrosine
Kinase. Src-related kinase lacking C-terminal
regulatory tyrosine and N-terminal myristoylation sites
(Srms) is a cytoplasmic (or non-receptor) PTK with
limited homology to Src kinases. Src kinases in general
contain an N-terminal SH4 domain with a myristoylation
site, followed by SH3 and SH2 domains, a tyr kinase
domain, and a regulatory C-terminal region containing a
conserved tyr; they are activated by
autophosphorylation at the tyr kinase domain, but are
negatively regulated by phosphorylation at the
C-terminal tyr by Csk (C-terminal Src Kinase). However,
Srms lacks the N-terminal myristoylation sites. Src
proteins are involved in signaling pathways that
regulate cytokine and growth factor responses,
cytoskeleton dynamics, cell proliferation, survival,
and differentiation. The SH3 domain of Src kinases
contributes to substrate recruitment by binding adaptor
proteins/substrates, and regulation of kinase activity
through an intramolecular interaction. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 55
Score = 28.6 bits (64), Expect = 0.23
Identities = 19/49 (38%), Positives = 26/49 (53%), Gaps = 4/49 (8%)
Query: 48 LADYTATNTTELSVHKGQQVEVVHNSSAPPDWALVRLSLGEECSEGLVP 96
L D+TA +T ELSV +G ++ V+ D+ R G S GLVP
Sbjct: 5 LYDFTARSTHELSVEQGDKLCVIEEEG---DYIFARKLTGNPES-GLVP 49
>gnl|CDD|212991 cd12058, SH3_MLK4, Src Homology 3 domain of Mixed Lineage Kinase
4. MLK4 is a Serine/Threonine Kinase (STK), catalyzing
the transfer of the gamma-phosphoryl group from ATP to
S/T residues on protein substrates. MLKs act as
mitogen-activated protein kinase kinase kinases
(MAP3Ks, MKKKs, MAPKKKs), which phosphorylate and
activate MAPK kinases (MAPKKs or MKKs or MAP2Ks), which
in turn phosphorylate and activate MAPKs during
signaling cascades that are important in mediating
cellular responses to extracellular signals. MLKs play
roles in immunity and inflammation, as well as in cell
death, proliferation, and cell cycle regulation. The
specific function of MLK4 is yet to be determined.
Mutations in the kinase domain of MLK4 have been
detected in colorectal cancers. MLK4 contains an SH3
domain, a catalytic kinase domain, a leucine zipper, a
proline-rich region, and a CRIB domain that mediates
binding to GTP-bound Cdc42 and Rac. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 58
Score = 28.8 bits (64), Expect = 0.27
Identities = 12/29 (41%), Positives = 17/29 (58%)
Query: 47 VLADYTATNTTELSVHKGQQVEVVHNSSA 75
L DY A+ ELS+ +G VEV+ +A
Sbjct: 4 ALYDYEASGEDELSLRRGDVVEVLSQDAA 32
Score = 27.6 bits (61), Expect = 0.70
Identities = 12/29 (41%), Positives = 17/29 (58%)
Query: 4 VLADYTAANTTELSVHKGQQVEVVHNSSA 32
L DY A+ ELS+ +G VEV+ +A
Sbjct: 4 ALYDYEASGEDELSLRRGDVVEVLSQDAA 32
>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 = 28.2 bits (63), Expect = 0.35
Identities = 15/32 (46%), Positives = 17/32 (53%), Gaps = 2/32 (6%)
Query: 48 LADYTATNTTELSVHKGQQVEVVHNSSAPPDW 79
L YTA N ELS KG + V+ S PDW
Sbjct: 5 LFPYTAQNEDELSFQKGDIINVL--SKDDPDW 34
Score = 28.2 bits (63), Expect = 0.38
Identities = 15/32 (46%), Positives = 17/32 (53%), Gaps = 2/32 (6%)
Query: 5 LADYTAANTTELSVHKGQQVEVVHNSSAPPDW 36
L YTA N ELS KG + V+ S PDW
Sbjct: 5 LFPYTAQNEDELSFQKGDIINVL--SKDDPDW 34
>gnl|CDD|212942 cd12009, SH3_Blk, Src homology 3 domain of Blk Protein Tyrosine
Kinase. Blk is a member of the Src subfamily of
proteins, which are cytoplasmic (or non-receptor) PTKs.
It is expressed specifically in B-cells and is involved
in pre-BCR (B-cell receptor) signaling. Src kinases
contain an N-terminal SH4 domain with a myristoylation
site, followed by SH3 and SH2 domains, a tyr kinase
domain, and a regulatory C-terminal region containing a
conserved tyr. They are activated by
autophosphorylation at the tyr kinase domain, but are
negatively regulated by phosphorylation at the
C-terminal tyr by Csk (C-terminal Src Kinase). The SH3
domain of Src kinases contributes to substrate
recruitment by binding adaptor proteins/substrates, and
regulation of kinase activity through an intramolecular
interaction. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP
motifs. They play versatile and diverse roles in the
cell including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 54
Score = 28.2 bits (63), Expect = 0.36
Identities = 13/50 (26%), Positives = 27/50 (54%), Gaps = 5/50 (10%)
Query: 48 LADYTATNTTELSVHKGQQVEVVHNSSAPPDWALVRLSLGEECSEGLVPT 97
D+ +N +L + KG++++V+ + +W L + SL EG +P+
Sbjct: 5 QYDFVPSNERDLQLKKGEKLQVL---KSDGEWWLAK-SL-TTGKEGYIPS 49
Score = 24.8 bits (54), Expect = 5.5
Identities = 8/39 (20%), Positives = 20/39 (51%), Gaps = 3/39 (7%)
Query: 5 LADYTAANTTELSVHKGQQVEVVHNSSAPPDWALGSGIE 43
D+ +N +L + KG++++V+ + +W L +
Sbjct: 5 QYDFVPSNERDLQLKKGEKLQVL---KSDGEWWLAKSLT 40
>gnl|CDD|212806 cd11873, SH3_CD2AP-like_1, First Src Homology 3 domain (SH3A) of
CD2-associated protein and similar proteins. This
subfamily is composed of the first SH3 domain (SH3A) of
CD2AP, CIN85 (Cbl-interacting protein of 85 kDa), and
similar domains. CD2AP and CIN85 are adaptor proteins
that bind to protein partners and assemble complexes
that have been implicated in T cell activation, kidney
function, and apoptosis of neuronal cells. They also
associate with endocytic proteins, actin cytoskeleton
components, and other adaptor proteins involved in
receptor tyrosine kinase (RTK) signaling. CD2AP and the
main isoform of CIN85 contain three SH3 domains, a
proline-rich region, and a C-terminal coiled-coil
domain. All of these domains enable CD2AP and CIN85 to
bind various protein partners and assemble complexes
that have been implicated in many different functions.
SH3A of both proteins bind to an atypical PXXXPR motif
at the C-terminus of Cbl and the cytoplasmic domain of
the cell adhesion protein CD2. CIN85 SH3A binds to
internal proline-rich motifs within the proline-rich
region; this intramolecular interaction serves as a
regulatory mechanism to keep CIN85 in a closed
conformation, preventing the recruitment of other
proteins. CIN85 SH3A has also been shown to bind
ubiquitin. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP
motifs. They play versatile and diverse roles in the
cell including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 53
Score = 28.0 bits (63), Expect = 0.36
Identities = 9/34 (26%), Positives = 15/34 (44%), Gaps = 4/34 (11%)
Query: 47 VLADYTATNTTELSVHKGQQVEVVHNSSAPPD-W 79
V DY A EL++ G +++ N + W
Sbjct: 4 VEFDYDAEEPDELTLKVG---DIITNVKKMEEGW 34
Score = 26.5 bits (59), Expect = 1.4
Identities = 10/37 (27%), Positives = 16/37 (43%), Gaps = 4/37 (10%)
Query: 4 VLADYTAANTTELSVHKGQQVEVVHNSSAPPD-WALG 39
V DY A EL++ G +++ N + W G
Sbjct: 4 VEFDYDAEEPDELTLKVG---DIITNVKKMEEGWWEG 37
>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 = 27.7 bits (62), Expect = 0.46
Identities = 12/36 (33%), Positives = 17/36 (47%)
Query: 4 VLADYTAANTTELSVHKGQQVEVVHNSSAPPDWALG 39
VL DY A N EL++ +G V ++ W G
Sbjct: 4 VLFDYEAENEDELTLREGDIVTILSKDCEDKGWWKG 39
Score = 26.2 bits (58), Expect = 1.6
Identities = 11/33 (33%), Positives = 16/33 (48%)
Query: 47 VLADYTATNTTELSVHKGQQVEVVHNSSAPPDW 79
VL DY A N EL++ +G V ++ W
Sbjct: 4 VLFDYEAENEDELTLREGDIVTILSKDCEDKGW 36
>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 = 27.8 bits (61), Expect = 0.57
Identities = 17/51 (33%), Positives = 30/51 (58%), Gaps = 6/51 (11%)
Query: 48 LADYTATNTTELSVHKGQQVEVVHNSSAPPDWALVR-LSLGEECSEGLVPT 97
L DY + T+LS KG+++++V+N+ DW L L+ G+ G +P+
Sbjct: 5 LYDYESRTETDLSFKKGERLQIVNNTEG--DWWLAHSLTTGQ---TGYIPS 50
Score = 27.4 bits (60), Expect = 0.72
Identities = 13/38 (34%), Positives = 23/38 (60%), Gaps = 2/38 (5%)
Query: 5 LADYTAANTTELSVHKGQQVEVVHNSSAPPDWALGSGI 42
L DY + T+LS KG+++++V+N+ DW L +
Sbjct: 5 LYDYESRTETDLSFKKGERLQIVNNTEG--DWWLAHSL 40
>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 = 27.7 bits (61), Expect = 0.61
Identities = 12/32 (37%), Positives = 20/32 (62%), Gaps = 2/32 (6%)
Query: 48 LADYTATNTTELSVHKGQQVEVVHNSSAPPDW 79
L DY A T +LS KG++ ++++N+ DW
Sbjct: 6 LYDYEARTTEDLSFKKGERFQIINNTEG--DW 35
Score = 27.7 bits (61), Expect = 0.67
Identities = 12/32 (37%), Positives = 20/32 (62%), Gaps = 2/32 (6%)
Query: 5 LADYTAANTTELSVHKGQQVEVVHNSSAPPDW 36
L DY A T +LS KG++ ++++N+ DW
Sbjct: 6 LYDYEARTTEDLSFKKGERFQIINNTEG--DW 35
>gnl|CDD|212874 cd11941, SH3_ARHGEF37_C2, Second C-terminal Src homology 3 domain
of Rho guanine nucleotide exchange factor 37. ARHGEF37
contains a RhoGEF [or Dbl homology (DH)] domain
followed by a Bin/Amphiphysin/Rvs (BAR) domain, and two
C-terminal SH3 domains. Its specific function is
unknown. Its domain architecture is similar to the
C-terminal half of DNMBP or Tuba, a cdc42-specific GEF
that provides a functional link between dynamin, Rho
GTPase signaling, and actin dynamics, and plays an
important role in regulating cell junction
configuration. GEFs activate small GTPases by
exchanging bound GDP for free GTP. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 57
Score = 27.6 bits (61), Expect = 0.70
Identities = 13/35 (37%), Positives = 21/35 (60%), Gaps = 2/35 (5%)
Query: 50 DYTATNTTELSVHKGQQVEVV--HNSSAPPDWALV 82
+TA + E+S+ GQ V V+ H+ P+W+LV
Sbjct: 7 PFTARSKHEVSLQAGQPVTVLEPHDKKGSPEWSLV 41
Score = 25.6 bits (56), Expect = 3.5
Identities = 12/34 (35%), Positives = 20/34 (58%), Gaps = 2/34 (5%)
Query: 7 DYTAANTTELSVHKGQQVEVV--HNSSAPPDWAL 38
+TA + E+S+ GQ V V+ H+ P+W+L
Sbjct: 7 PFTARSKHEVSLQAGQPVTVLEPHDKKGSPEWSL 40
>gnl|CDD|212741 cd11807, SH3_ASPP, Src homology 3 domain of Apoptosis Stimulating
of p53 proteins (ASPP). The ASPP family of proteins
bind to important regulators of apoptosis (p53, Bcl-2,
and RelA) and cell growth (APCL, PP1). They share
similarity at their C-termini, where they harbor a
proline-rich region, four ankyrin (ANK) repeats, and an
SH3 domain. Vertebrates contain three members of the
family: ASPP1, ASPP2, and iASPP. ASPP1 and ASPP2
activate the apoptotic function of the p53 family of
tumor suppressors (p53, p63, and p73), while iASPP is
an oncoprotein that specifically inhibits p53-induced
apoptosis. The expression of ASPP proteins is altered
in tumors; ASPP1 and ASPP2 are downregulated whereas
iASPP is upregulated is some cancer types. ASPP
proteins also bind and regulate protein phosphatase 1
(PP1), and this binding is competitive with p53
binding. The SH3 domain and the ANK repeats of ASPP
contribute to the p53 binding site; they bind to the
DNA binding domain of p53. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles
in the cell including the regulation of enzymes,
changing the subcellular localization of signaling
pathway components, and mediating the formation of
multiprotein complex assemblies.
Length = 57
Score = 27.3 bits (61), Expect = 0.79
Identities = 17/50 (34%), Positives = 24/50 (48%), Gaps = 5/50 (10%)
Query: 48 LADYTATNTTELSVHKGQQVEVVH-NSSAPPDWALVRLSLGEECSEGLVP 96
L DY A N ELS +G ++ V+ +W R L ++ EG VP
Sbjct: 6 LFDYEAENGDELSFREGDELTVLRKGDDDETEWWWAR--LNDK--EGYVP 51
Score = 24.6 bits (54), Expect = 7.5
Identities = 10/24 (41%), Positives = 14/24 (58%)
Query: 5 LADYTAANTTELSVHKGQQVEVVH 28
L DY A N ELS +G ++ V+
Sbjct: 6 LFDYEAENGDELSFREGDELTVLR 29
>gnl|CDD|212837 cd11904, SH3_Nck1_3, Third Src Homology 3 domain of Nck1 adaptor
protein. Nck1 (also called Nckalpha) plays a crucial
role in connecting signaling pathways of tyrosine
kinase receptors and important effectors in actin
dynamics and cytoskeletal remodeling. It binds and
activates RasGAP, resulting in the downregulation of
Ras. It is also involved in the signaling of
endothilin-mediated inhibition of cell migration. Nck
adaptor proteins regulate actin cytoskeleton dynamics
by linking proline-rich effector molecules to protein
tyrosine kinases and phosphorylated signaling
intermediates. They contain three SH3 domains and a
C-terminal SH2 domain. They function downstream of the
PDGFbeta receptor and are involved in Rho GTPase
signaling and actin dynamics. Vertebrates contain two
Nck adaptor proteins: Nck1 (also called Nckalpha) and
Nck2, which show partly overlapping functions but also
bind distinct targets. The third SH3 domain of Nck
appears to prefer ligands with a PxAPxR motif. SH3
domains are protein interaction domains that usually
bind to proline-rich ligands with moderate affinity and
selectivity, preferentially a PxxP motif. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 57
Score = 27.3 bits (60), Expect = 0.80
Identities = 15/49 (30%), Positives = 27/49 (55%), Gaps = 3/49 (6%)
Query: 48 LADYTATNTTELSVHKGQQVEVVHNSSAPPDWALVRLSLGEECSEGLVP 96
L ++++N EL+ KG+ ++V+ P+W R + G+ GLVP
Sbjct: 6 LYPFSSSNDEELNFEKGEVMDVIEKPENDPEWWKCRKANGQ---VGLVP 51
Score = 25.0 bits (54), Expect = 5.2
Identities = 9/32 (28%), Positives = 19/32 (59%)
Query: 5 LADYTAANTTELSVHKGQQVEVVHNSSAPPDW 36
L ++++N EL+ KG+ ++V+ P+W
Sbjct: 6 LYPFSSSNDEELNFEKGEVMDVIEKPENDPEW 37
>gnl|CDD|145715 pfam02710, Hema_HEFG, Hemagglutinin domain of
haemagglutinin-esterase-fusion glycoprotein.
Length = 140
Score = 28.5 bits (64), Expect = 0.83
Identities = 11/32 (34%), Positives = 13/32 (40%), Gaps = 3/32 (9%)
Query: 73 SSAPPDWA---LVRLSLGEECSEGLVPTCVLK 101
S PD+A L S C + LVP C
Sbjct: 51 ESNFPDYAQFTLPGSSGTTICDKHLVPLCYFN 82
>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 = 26.9 bits (60), Expect = 0.95
Identities = 9/17 (52%), Positives = 9/17 (52%)
Query: 5 LADYTAANTTELSVHKG 21
L DY A ELS KG
Sbjct: 5 LYDYRAQTPGELSFSKG 21
Score = 26.1 bits (58), Expect = 1.7
Identities = 9/17 (52%), Positives = 9/17 (52%)
Query: 48 LADYTATNTTELSVHKG 64
L DY A ELS KG
Sbjct: 5 LYDYRAQTPGELSFSKG 21
>gnl|CDD|212773 cd11839, SH3_Intersectin_4, Fourth Src homology 3 domain (or
SH3D) of Intersectin. Intersectins (ITSNs) are adaptor
proteins that function in exo- and endocytosis, actin
cytoskeletal reorganization, and signal transduction.
They are essential for initiating clathrin-coated pit
formation. They bind to many proteins through their
multidomain structure and facilitate the assembly of
multimeric complexes. Vertebrates contain two ITSN
proteins, ITSN1 and ITSN2, which exist in alternatively
spliced short and long isoforms. The short isoforms
contain two Eps15 homology domains (EH1 and EH2), a
coiled-coil region and five SH3 domains (SH3A-E), while
the long isoforms, in addition, contain RhoGEF (also
called Dbl-homologous or DH), Pleckstrin homology (PH)
and C2 domains. ITSN1 and ITSN2 are both widely
expressed, with variations depending on tissue type and
stage of development. The fourth SH3 domain (or SH3D)
of ITSN1 has been shown to bind SHIP2, Numb, CdGAP, and
N-WASP. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP
motifs. They play versatile and diverse roles in the
cell including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 58
Score = 26.9 bits (60), Expect = 0.98
Identities = 11/23 (47%), Positives = 15/23 (65%)
Query: 47 VLADYTATNTTELSVHKGQQVEV 69
V+A +TAT +LS+ GQ V V
Sbjct: 4 VIAPFTATAENQLSLAVGQLVLV 26
Score = 24.6 bits (54), Expect = 6.8
Identities = 10/23 (43%), Positives = 14/23 (60%)
Query: 4 VLADYTAANTTELSVHKGQQVEV 26
V+A +TA +LS+ GQ V V
Sbjct: 4 VIAPFTATAENQLSLAVGQLVLV 26
>gnl|CDD|212954 cd12021, SH3_p47phox_1, First or N-terminal Src homology 3 domain
of the p47phox subunit of NADPH oxidase, also called
Neutrophil Cytosolic Factor 1. p47phox, or NCF1, is a
cytosolic subunit of the phagocytic NADPH oxidase
complex (also called Nox2 or gp91phox), which plays a
key role in the ability of phagocytes to defend against
bacterial infections. NADPH oxidase catalyzes the
transfer of electrons from NADPH to oxygen during
phagocytosis forming superoxide and reactive oxygen
species. p47phox is required for activation of NADH
oxidase and plays a role in translocation. It contains
an N-terminal Phox homology (PX) domain, tandem SH3
domains (N-SH3 and C-SH3), a polybasic/autoinhibitory
region, and a C-terminal proline-rich region (PRR). This
model characterizes the first SH3 domain (or N-SH3) of
p47phox. In its inactive state, the tandem SH3 domains
interact intramolecularly with the autoinhibitory
region; upon activation, the tandem SH3 domains are
exposed through a conformational change, resulting in
their binding to the PRR of p22phox and the activation
of NADPH oxidase. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP motifs.
They play versatile and diverse roles in the cell
including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 53
Score = 26.8 bits (59), Expect = 1.1
Identities = 16/55 (29%), Positives = 26/55 (47%), Gaps = 6/55 (10%)
Query: 47 VLADYTATNTTELSVHKGQQVEVVHNSSAPPDWALVRLSLGEECSEGLVPTCVLK 101
+ADY ++ +E+++ G VEVV S W +L + G VP L+
Sbjct: 4 AIADYEKSSKSEMALKTGDVVEVVEKS--ENGWWFCQL----KAKRGWVPASYLE 52
Score = 25.7 bits (56), Expect = 3.1
Identities = 10/27 (37%), Positives = 17/27 (62%)
Query: 4 VLADYTAANTTELSVHKGQQVEVVHNS 30
+ADY ++ +E+++ G VEVV S
Sbjct: 4 AIADYEKSSKSEMALKTGDVVEVVEKS 30
>gnl|CDD|212989 cd12056, SH3_CD2AP_3, Third Src Homology 3 domain (SH3C) of
CD2-associated protein. CD2AP, also called CMS (Cas
ligand with Multiple SH3 domains) or METS1
(Mesenchyme-to-Epithelium Transition protein with SH3
domains), is a cytosolic adaptor protein that plays a
role in regulating the cytoskeleton. It is critical in
cell-to-cell union necessary for kidney function. It
also stabilizes the contact between a T cell and
antigen-presenting cells. It is primarily expressed in
podocytes at the cytoplasmic face of the slit diaphragm
and serves as a linker anchoring podocin and nephrin to
the actin cytoskeleton. CD2AP contains three SH3
domains, a proline-rich region, and a C-terminal
coiled-coil domain. All of these domains enable CD2AP
to bind various protein partners and assemble complexes
that have been implicated in many different functions.
This alignment model represents the third SH3 domain
(SH3C) of CD2AP. SH3C has been shown to bind ubiquitin.
SH3 domains are protein interaction domains that bind
to proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 57
Score = 26.7 bits (59), Expect = 1.1
Identities = 10/37 (27%), Positives = 16/37 (43%)
Query: 43 EMTWVLADYTATNTTELSVHKGQQVEVVHNSSAPPDW 79
E L Y TN EL +G+ + ++ + P W
Sbjct: 2 EYCKALFHYEGTNEDELDFKEGEIILIISKDTGEPGW 38
>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 = 26.8 bits (60), Expect = 1.2
Identities = 11/25 (44%), Positives = 15/25 (60%)
Query: 50 DYTATNTTELSVHKGQQVEVVHNSS 74
+Y A ELS+ KG +V V+ SS
Sbjct: 7 NYEAQREDELSLRKGDRVLVLEKSS 31
Score = 25.3 bits (56), Expect = 3.4
Identities = 11/25 (44%), Positives = 15/25 (60%)
Query: 7 DYTAANTTELSVHKGQQVEVVHNSS 31
+Y A ELS+ KG +V V+ SS
Sbjct: 7 NYEAQREDELSLRKGDRVLVLEKSS 31
>gnl|CDD|212809 cd11876, SH3_MLK, Src Homology 3 domain of Mixed Lineage Kinases.
MLKs are Serine/Threonine Kinases (STKs), catalyzing
the transfer of the gamma-phosphoryl group from ATP to
S/T residues on protein substrates. MLKs act as
mitogen-activated protein kinase kinase kinases
(MAP3Ks, MKKKs, MAPKKKs), which phosphorylate and
activate MAPK kinases (MAPKKs or MKKs or MAP2Ks), which
in turn phosphorylate and activate MAPKs during
signaling cascades that are important in mediating
cellular responses to extracellular signals. MLKs play
roles in immunity and inflammation, as well as in cell
death, proliferation, and cell cycle regulation.
Mammals have four MLKs (MLK1-4), mostly conserved in
vertebrates, which contain an SH3 domain, a catalytic
kinase domain, a leucine zipper, a proline-rich region,
and a CRIB domain that mediates binding to GTP-bound
Cdc42 and Rac. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP
motifs. They play versatile and diverse roles in the
cell including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 58
Score = 26.7 bits (59), Expect = 1.3
Identities = 13/32 (40%), Positives = 18/32 (56%), Gaps = 1/32 (3%)
Query: 2 TWV-LADYTAANTTELSVHKGQQVEVVHNSSA 32
W L DY A EL++ +GQ VEV+ +A
Sbjct: 1 LWTALFDYDARGEDELTLRRGQPVEVLSKDAA 32
Score = 25.9 bits (57), Expect = 2.8
Identities = 13/32 (40%), Positives = 18/32 (56%), Gaps = 1/32 (3%)
Query: 45 TWV-LADYTATNTTELSVHKGQQVEVVHNSSA 75
W L DY A EL++ +GQ VEV+ +A
Sbjct: 1 LWTALFDYDARGEDELTLRRGQPVEVLSKDAA 32
>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 = 26.6 bits (58), Expect = 1.5
Identities = 18/50 (36%), Positives = 27/50 (54%), Gaps = 4/50 (8%)
Query: 48 LADYTATNTTELSVHKGQQVEVVHNSSAPPDWALVRLSLGEECSEGLVPT 97
L DY A +LS HKG++ +++ NSS W L+ GE G +P+
Sbjct: 6 LYDYEARTEDDLSFHKGEKFQIL-NSSEGDWWEARSLTTGE---TGYIPS 51
Score = 25.4 bits (55), Expect = 3.5
Identities = 12/32 (37%), Positives = 20/32 (62%), Gaps = 2/32 (6%)
Query: 5 LADYTAANTTELSVHKGQQVEVVHNSSAPPDW 36
L DY A +LS HKG++ +++++S DW
Sbjct: 6 LYDYEARTEDDLSFHKGEKFQILNSSEG--DW 35
>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 = 26.3 bits (58), Expect = 1.5
Identities = 12/36 (33%), Positives = 18/36 (50%), Gaps = 2/36 (5%)
Query: 5 LADYTAANTTELSVHKGQQVEVVHNSSAPPDWALGS 40
L D+ EL +G +EV+ NS P+W G+
Sbjct: 5 LFDFDPQEDGELGFRRGDFIEVMDNSD--PNWWKGA 38
Score = 25.2 bits (55), Expect = 3.7
Identities = 11/32 (34%), Positives = 16/32 (50%), Gaps = 2/32 (6%)
Query: 48 LADYTATNTTELSVHKGQQVEVVHNSSAPPDW 79
L D+ EL +G +EV+ NS P+W
Sbjct: 5 LFDFDPQEDGELGFRRGDFIEVMDNSD--PNW 34
>gnl|CDD|212950 cd12017, SH3_Tks_3, Third Src homology 3 domain of Tyrosine
kinase substrate (Tks) proteins. Tks proteins are Src
substrates and scaffolding proteins that play important
roles in the formation of podosomes and invadopodia,
the dynamic actin-rich structures that are related to
cell migration and cancer cell invasion. Vertebrates
contain two Tks proteins, Tks4 (Tyr kinase substrate
with four SH3 domains) and Tks5 (Tyr kinase substrate
with five SH3 domains), which display partially
overlapping but non-redundant functions. Both associate
with the ADAMs family of transmembrane
metalloproteases, which function as sheddases and
mediators of cell and matrix interactions. Tks5
interacts with N-WASP and Nck, while Tks4 is essential
for the localization of MT1-MMP (membrane-type 1 matrix
metalloproteinase) to invadopodia. Tks proteins contain
an N-terminal Phox homology (PX) domain and four or
five SH3 domains. This model characterizes the third
SH3 domain of Tks proteins. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles
in the cell including the regulation of enzymes,
changing the subcellular localization of signaling
pathway components, and mediating the formation of
multiprotein complex assemblies.
Length = 53
Score = 26.3 bits (58), Expect = 1.7
Identities = 15/50 (30%), Positives = 26/50 (52%), Gaps = 6/50 (12%)
Query: 48 LADYTATNTTELSVHKGQQVEVVHNSSAPPDWALVRLSLGEECSEGLVPT 97
+ ++ AT +S KGQ+VEV+ + P W V++ + EG P+
Sbjct: 5 IGEFQATIQDGISFQKGQKVEVIDKN--PSGWWYVKI----DGKEGWAPS 48
>gnl|CDD|212744 cd11810, SH3_RUSC1_like, Src homology 3 domain of RUN and SH3
domain-containing proteins 1 and 2. RUSC1 and RUSC2,
that were originally characterized in silico. They are
adaptor proteins consisting of RUN, leucine zipper, and
SH3 domains. RUSC1, also called NESCA (New molecule
containing SH3 at the carboxy-terminus), is highly
expressed in the brain and is translocated to the
nuclear membrane from the cytoplasm upon stimulation
with neurotrophin. It plays a role in facilitating
neurotrophin-dependent neurite outgrowth. It also
interacts with NEMO (or IKKgamma) and may function in
NEMO-mediated activation of NF-kB. RUSC2, also called
Iporin, is expressed ubiquitously with highest amounts
in the brain and testis. It interacts with the small
GTPase Rab1 and the Golgi matrix protein GM130, and may
function in linking GTPases to certain intracellular
signaling pathways. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP
motifs. They play versatile and diverse roles in the
cell including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 50
Score = 26.3 bits (58), Expect = 1.8
Identities = 15/50 (30%), Positives = 24/50 (48%), Gaps = 6/50 (12%)
Query: 48 LADYTATNTTELSVHKGQQVEVVHNSSAPPDWALVRLSLGEECSEGLVPT 97
L + AT++ +LS KG + V+ + DW + G +GLVP
Sbjct: 5 LCHHVATDSGQLSFRKGDILRVI--ARVDDDWL--LCTRGST--KGLVPL 48
>gnl|CDD|212948 cd12015, SH3_Tks_1, First Src homology 3 domain of Tyrosine
kinase substrate (Tks) proteins. Tks proteins are Src
substrates and scaffolding proteins that play important
roles in the formation of podosomes and invadopodia,
the dynamic actin-rich structures that are related to
cell migration and cancer cell invasion. Vertebrates
contain two Tks proteins, Tks4 (Tyr kinase substrate
with four SH3 domains) and Tks5 (Tyr kinase substrate
with five SH3 domains), which display partially
overlapping but non-redundant functions. Both associate
with the ADAMs family of transmembrane
metalloproteases, which function as sheddases and
mediators of cell and matrix interactions. Tks5
interacts with N-WASP and Nck, while Tks4 is essential
for the localization of MT1-MMP (membrane-type 1 matrix
metalloproteinase) to invadopodia. Tks proteins contain
an N-terminal Phox homology (PX) domain and four or
five SH3 domains. This model characterizes the first
SH3 domain of Tks proteins. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles
in the cell including the regulation of enzymes,
changing the subcellular localization of signaling
pathway components, and mediating the formation of
multiprotein complex assemblies.
Length = 53
Score = 26.2 bits (58), Expect = 1.8
Identities = 9/24 (37%), Positives = 14/24 (58%)
Query: 47 VLADYTATNTTELSVHKGQQVEVV 70
V+ADY E+S+ G V+V+
Sbjct: 4 VVADYKKQQPNEISLRAGDVVDVI 27
Score = 24.7 bits (54), Expect = 6.0
Identities = 9/24 (37%), Positives = 14/24 (58%)
Query: 4 VLADYTAANTTELSVHKGQQVEVV 27
V+ADY E+S+ G V+V+
Sbjct: 4 VVADYKKQQPNEISLRAGDVVDVI 27
>gnl|CDD|212724 cd11790, SH3_Amphiphysin, Src Homology 3 domain of Amphiphysin
and related domains. Amphiphysins function primarily
in endocytosis and other membrane remodeling events.
They exist in several isoforms and mammals possess two
amphiphysin proteins from distinct genes. Amphiphysin I
proteins, enriched in the brain and nervous system,
contain domains that bind clathrin, Adaptor Protein
complex 2 (AP2), dynamin, and synaptojanin. They
function in synaptic vesicle endocytosis. Human
autoantibodies to amphiphysin I hinder GABAergic
signaling and contribute to the pathogenesis of
paraneoplastic stiff-person syndrome. Some amphiphysin
II isoforms, also called Bridging integrator 1 (Bin1),
are localized in many different tissues and may
function in intracellular vesicle trafficking. In
skeletal muscle, Bin1 plays a role in the organization
and maintenance of the T-tubule network. Mutations in
Bin1 are associated with autosomal recessive
centronuclear myopathy. Amphiphysins contain an
N-terminal BAR domain with an additional N-terminal
amphipathic helix (an N-BAR), a variable central
domain, and a C-terminal SH3 domain. The SH3 domain of
amphiphysins bind proline-rich motifs present in
binding partners such as dynamin, synaptojanin, and
nsP3. It also belongs to a subset of SH3 domains that
bind ubiquitin in a site that overlaps with the peptide
binding site. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP
motifs. They play versatile and diverse roles in the
cell including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 64
Score = 26.1 bits (58), Expect = 2.0
Identities = 13/38 (34%), Positives = 19/38 (50%), Gaps = 7/38 (18%)
Query: 7 DYTAANTTELSVHKGQQVEVVHNSSAPPD-----WALG 39
DYTA +T EL+ KG + V+ P+ W +G
Sbjct: 10 DYTAEDTDELTFEKGDVILVI--PFDDPEEQDEGWLMG 45
Score = 25.4 bits (56), Expect = 4.7
Identities = 10/21 (47%), Positives = 14/21 (66%)
Query: 50 DYTATNTTELSVHKGQQVEVV 70
DYTA +T EL+ KG + V+
Sbjct: 10 DYTAEDTDELTFEKGDVILVI 30
>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 = 25.9 bits (57), Expect = 2.3
Identities = 9/30 (30%), Positives = 18/30 (60%), Gaps = 2/30 (6%)
Query: 50 DYTATNTTELSVHKGQQVEVVHNSSAPPDW 79
D++A + ++LS +G +EV+ P+W
Sbjct: 7 DFSAEDPSQLSFRRGDIIEVL--DCPDPNW 34
Score = 25.9 bits (57), Expect = 2.4
Identities = 10/33 (30%), Positives = 19/33 (57%), Gaps = 2/33 (6%)
Query: 7 DYTAANTTELSVHKGQQVEVVHNSSAPPDWALG 39
D++A + ++LS +G +EV+ P+W G
Sbjct: 7 DFSAEDPSQLSFRRGDIIEVL--DCPDPNWWRG 37
>gnl|CDD|212955 cd12022, SH3_p47phox_2, Second or C-terminal Src homology 3
domain of the p47phox subunit of NADPH oxidase, also
called Neutrophil Cytosolic Factor 1. p47phox, or
NCF1, is a cytosolic subunit of the phagocytic NADPH
oxidase complex (also called Nox2 or gp91phox), which
plays a key role in the ability of phagocytes to defend
against bacterial infections. NADPH oxidase catalyzes
the transfer of electrons from NADPH to oxygen during
phagocytosis forming superoxide and reactive oxygen
species. p47phox is required for activation of NADH
oxidase and plays a role in translocation. It contains
an N-terminal Phox homology (PX) domain, tandem SH3
domains (N-SH3 and C-SH3), a polybasic/autoinhibitory
region, and a C-terminal proline-rich region (PRR).
This model characterizes the second SH3 domain (or
C-SH3) of p47phox. In its inactive state, the tandem
SH3 domains interact intramolecularly with the
autoinhibitory region; upon activation, the tandem SH3
domains are exposed through a conformational change,
resulting in their binding to the PRR of p22phox and
the activation of NADPH oxidase. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 53
Score = 26.0 bits (57), Expect = 2.4
Identities = 9/22 (40%), Positives = 15/22 (68%)
Query: 50 DYTATNTTELSVHKGQQVEVVH 71
YTA EL++ +G+ +EV+H
Sbjct: 7 AYTAVEEDELTLLEGEAIEVIH 28
Score = 26.0 bits (57), Expect = 2.5
Identities = 9/22 (40%), Positives = 15/22 (68%)
Query: 7 DYTAANTTELSVHKGQQVEVVH 28
YTA EL++ +G+ +EV+H
Sbjct: 7 AYTAVEEDELTLLEGEAIEVIH 28
>gnl|CDD|212921 cd11988, SH3_Intersectin2_1, First Src homology 3 domain (or
SH3A) of Intersectin-2. Intersectin-2 (ITSN2) is an
adaptor protein that functions in exo- and endocytosis,
actin cytoskeletal reorganization, and signal
transduction. It plays a role in clathrin-coated pit
(CCP) formation. It binds to many proteins through its
multidomain structure and facilitate the assembly of
multimeric complexes. ITSN2 also functions as a
specific GEF for Cdc42 activation in epithelial
morphogenesis, and is required in mitotic spindle
orientation. It exists in alternatively spliced short
and long isoforms. The short isoform contains two Eps15
homology domains (EH1 and EH2), a coiled-coil region
and five SH3 domains (SH3A-E), while the long isoform,
in addition, contains RhoGEF (also called
Dbl-homologous or DH), Pleckstrin homology (PH) and C2
domains. The first SH3 domain (or SH3A) of ITSN2 is
expected to bind many protein partners, similar to
ITSN1 which has been shown to bind Sos1, dynamin1/2,
CIN85, c-Cbl, PI3K-C2, SHIP2, N-WASP, and CdGAP, among
others. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP
motifs. They play versatile and diverse roles in the
cell including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 57
Score = 25.6 bits (56), Expect = 2.8
Identities = 11/36 (30%), Positives = 17/36 (47%)
Query: 5 LADYTAANTTELSVHKGQQVEVVHNSSAPPDWALGS 40
L + A N E+S + G ++V + P W GS
Sbjct: 7 LYPFEARNHDEMSFNAGDIIQVDEKTVGEPGWLYGS 42
>gnl|CDD|213007 cd12074, SH3_Tks5_1, First Src homology 3 domain of Tyrosine
kinase substrate with five SH3 domains. Tks5, also
called SH3 and PX domain-containing protein 2A
(SH3PXD2A) or Five SH (FISH), is a scaffolding protein
and Src substrate that is localized in podosomes, which
are electron-dense structures found in Src-transformed
fibroblasts, osteoclasts, macrophages, and some
invasive cancer cells. It binds and regulates some
members of the ADAMs family of transmembrane
metalloproteases, which function as sheddases and
mediators of cell and matrix interactions. It is
required for podosome formation, degradation of the
extracellular matrix, and cancer cell invasion. Tks5
contains an N-terminal Phox homology (PX) domain and
five SH3 domains. This model characterizes the first
SH3 domain of Tks5. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP
motifs. They play versatile and diverse roles in the
cell including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 53
Score = 25.8 bits (56), Expect = 2.9
Identities = 13/48 (27%), Positives = 26/48 (54%), Gaps = 1/48 (2%)
Query: 4 VLADYTAANTTELSVHKGQQVEVVHNSSAPPDWALGSGIEMTWVLADY 51
V+++Y +E+S+ G+ V+V+ + + W + + E WV A Y
Sbjct: 4 VVSNYEKQENSEISLQAGEVVDVIEKNESGW-WFVSTAEEQGWVPATY 50
>gnl|CDD|213016 cd12140, SH3_Amphiphysin_I, Src Homology 3 domain of Amphiphysin
I. Amphiphysins function primarily in endocytosis and
other membrane remodeling events. They exist in several
isoforms and mammals possess two amphiphysin proteins
from distinct genes. Amphiphysin I proteins, enriched
in the brain and nervous system, contain domains that
bind clathrin, Adaptor Protein complex 2 (AP2),
dynamin, and synaptojanin. They function in synaptic
vesicle endocytosis. Human autoantibodies to
amphiphysin I hinder GABAergic signaling and contribute
to the pathogenesis of paraneoplastic stiff-person
syndrome. Amphiphysins contain an N-terminal BAR domain
with an additional N-terminal amphipathic helix (an
N-BAR), a variable central domain, and a C-terminal SH3
domain. The SH3 domain of amphiphysins bind
proline-rich motifs present in binding partners such as
dynamin, synaptojanin, and nsP3. It also belongs to a
subset of SH3 domains that bind ubiquitin in a site
that overlaps with the peptide binding site. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 72
Score = 26.0 bits (57), Expect = 3.0
Identities = 12/29 (41%), Positives = 18/29 (62%)
Query: 4 VLADYTAANTTELSVHKGQQVEVVHNSSA 32
L D+ AAN+ EL + +G V VV + +A
Sbjct: 7 TLHDFEAANSDELELKRGDIVLVVPSETA 35
>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 = 25.5 bits (56), Expect = 3.1
Identities = 15/56 (26%), Positives = 27/56 (48%), Gaps = 6/56 (10%)
Query: 47 VLADYTATNTTELSVHKGQQVEVVHNSSAPPDWALVRLSLGEECSEGLVPTCVLKQ 102
L DY + E+S+ KG + ++ +S+ DW V + +G VP +K+
Sbjct: 4 ALYDYQEKSPREVSMKKGDILTLL--NSSNKDWWKVEV----NDRQGFVPAAYVKK 53
>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 = 25.3 bits (56), Expect = 3.3
Identities = 7/24 (29%), Positives = 12/24 (50%)
Query: 47 VLADYTATNTTELSVHKGQQVEVV 70
L D+T + +LS G + V+
Sbjct: 4 ALYDFTPKSKNQLSFKAGDIIYVL 27
>gnl|CDD|212798 cd11864, SH3_PEX13_eumet, Src Homology 3 domain of eumetazoan
Peroxisomal biogenesis factor 13. PEX13 is a peroxin
and is required for protein import into the peroxisomal
matrix and membrane. It is an integral membrane protein
that is essential for the localization of PEX14 and the
import of proteins containing the peroxisome matrix
targeting signals, PTS1 and PTS2. Mutations of the
PEX13 gene in humans lead to a wide range of peroxisome
biogenesis disorders (PBDs), the most severe of which
is known as Zellweger syndrome (ZS), a severe
multisystem disorder characterized by hypotonia,
psychomotor retardation, and neuronal migration
defects. PEX13 contains two transmembrane regions and a
C-terminal SH3 domain. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles
in the cell including the regulation of enzymes,
changing the subcellular localization of signaling
pathway components, and mediating the formation of
multiprotein complex assemblies.
Length = 58
Score = 25.3 bits (56), Expect = 3.5
Identities = 9/36 (25%), Positives = 15/36 (41%), Gaps = 2/36 (5%)
Query: 7 DYTAANTTELSVHKGQQVEVVHNSSAP--PDWALGS 40
D+ A + ELS G ++ + P W L +
Sbjct: 7 DFVAESEDELSFRAGDKLRLAPKELQPRVRGWLLAT 42
Score = 24.5 bits (54), Expect = 6.9
Identities = 13/50 (26%), Positives = 21/50 (42%), Gaps = 5/50 (10%)
Query: 50 DYTATNTTELSVHKGQQVEVVHNSSAP--PDWALVRLSLGEECSEGLVPT 97
D+ A + ELS G ++ + P W L ++ + GLVP
Sbjct: 7 DFVAESEDELSFRAGDKLRLAPKELQPRVRGWLLA--TVDGQKI-GLVPA 53
>gnl|CDD|227496 COG5167, VID27, Protein involved in vacuole import and degradation
[Intracellular trafficking and secretion].
Length = 776
Score = 27.3 bits (60), Expect = 3.6
Identities = 13/32 (40%), Positives = 17/32 (53%), Gaps = 2/32 (6%)
Query: 118 ITLPIE--QDLGRPGLDKSFYGDRQTTPKRIQ 147
+PI+ Q GR G KSF + PKR+Q
Sbjct: 629 TDVPIKYGQPAGRDGFLKSFPASEKPKPKRLQ 660
>gnl|CDD|212990 cd12057, SH3_CIN85_3, Third Src Homology 3 domain (SH3C) of
Cbl-interacting protein of 85 kDa. CIN85, also called
SH3 domain-containing kinase-binding protein 1
(SH3KBP1) or CD2-binding protein 3 (CD2BP3) or Ruk, is
an adaptor protein that is involved in the
downregulation of receptor tyrosine kinases by
facilitating endocytosis through interaction with
endophilin-associated ubiquitin ligase Cbl proteins. It
is also important in many other cellular processes
including vesicle-mediated transport, cytoskeletal
remodelling, apoptosis, cell adhesion and migration,
and viral infection, among others. CIN85 exists as
multiple variants from alternative splicing; the main
variant contains three SH3 domains, a proline-rich
region, and a C-terminal coiled-coil domain. All of
these domains enable CIN85 to bind various protein
partners and assemble complexes that have been
implicated in many different functions. This alignment
model represents the third SH3 domain (SH3C) of CIN85.
SH3C has been shown to bind ubiquitin. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 56
Score = 25.2 bits (55), Expect = 4.0
Identities = 11/36 (30%), Positives = 16/36 (44%)
Query: 4 VLADYTAANTTELSVHKGQQVEVVHNSSAPPDWALG 39
VL Y A N EL++ +G V ++ W G
Sbjct: 4 VLFPYEAQNEDELTIKEGDIVTLISKDCIDAGWWEG 39
>gnl|CDD|212836 cd11903, SH3_Nck2_3, Third Src Homology 3 domain of Nck2 adaptor
protein. Nck2 (also called Nckbeta or Growth factor
receptor-bound protein 4, Grb4) plays a crucial role in
connecting signaling pathways of tyrosine kinase
receptors and important effectors in actin dynamics and
cytoskeletal remodeling. It binds neuronal signaling
proteins such as ephrinB and Disabled-1 (Dab-1)
exclusively. Nck adaptor proteins regulate actin
cytoskeleton dynamics by linking proline-rich effector
molecules to protein tyrosine kinases and
phosphorylated signaling intermediates. They contain
three SH3 domains and a C-terminal SH2 domain. They
function downstream of the PDGFbeta receptor and are
involved in Rho GTPase signaling and actin dynamics.
Vertebrates contain two Nck adaptor proteins: Nck1
(also called Nckalpha) and Nck2, which show partly
overlapping functions but also bind distinct targets.
The third SH3 domain of Nck appears to prefer ligands
with a PxAPxR motif. SH3 domains are protein
interaction domains that usually bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially a PxxP motif. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 59
Score = 25.4 bits (55), Expect = 4.1
Identities = 15/49 (30%), Positives = 25/49 (51%), Gaps = 3/49 (6%)
Query: 48 LADYTATNTTELSVHKGQQVEVVHNSSAPPDWALVRLSLGEECSEGLVP 96
L +++ EL+ KG+ +EV+ P+W + S G+ GLVP
Sbjct: 6 LYPFSSVTEEELNFEKGETMEVIEKPENDPEWWKCKNSRGQ---VGLVP 51
>gnl|CDD|212791 cd11857, SH3_DBS, Src homology 3 domain of DBL's Big Sister (DBS),
a guanine nucleotide exchange factor. DBS, also called
MCF2L (MCF2-transforming sequence-like protein) or OST,
is a Rho GTPase guanine nucleotide exchange factor
(RhoGEF), facilitating the exchange of GDP and GTP. It
was originally isolated from a cDNA screen for sequences
that cause malignant growth. It plays roles in
regulating clathrin-mediated endocytosis and cell
migration through its activation of Rac1 and Cdc42.
Depending on cell type, DBS can also activate RhoA and
RhoG. DBS contains a Sec14-like domain, spectrin-like
repeats, a RhoGEF [or Dbl homology (DH)] domain, a
Pleckstrin homology (PH) domain, and an SH3 domain. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 55
Score = 24.9 bits (55), Expect = 4.5
Identities = 19/55 (34%), Positives = 27/55 (49%), Gaps = 6/55 (10%)
Query: 47 VLADYTATNTTELSVHKGQQVEVVHNSSAPPDWALVR-LSLGEECSEGLVPTCVL 100
V+ADY +L+V G V+++H W LV+ LS + EG VP L
Sbjct: 4 VVADYEKGGPDDLTVKSGDLVQLIH-EGDEGQW-LVKNLSTRK---EGWVPAANL 53
>gnl|CDD|212787 cd11853, SH3_Kalirin_2, Second Src homology 3 domain of the RhoGEF
kinase, Kalirin. Kalirin, also called Duo, Duet, or
TRAD, is a large neuronal dual Rho guanine nucleotide
exchange factor (RhoGEF) that activates Rac1, RhoA, and
RhoG using two RhoGEF domains. Kalirin exists in many
isoforms generated by alternative splicing and the use
of multiple promoters; the major isoforms are kalirin-7,
-9, and -12, which differ at their C-terminal ends.
Kalirin-12, the longest isoform, contains an N-terminal
Sec14p domain, spectrin-like repeats, two RhoGEF
domains, two SH3 domains, as well as Ig, FNIII, and
kinase domains at the C-terminal end. Kalirin-7 contains
only a single RhoGEF domain and does not contain an SH3
domain. Kalirin, through its many isoforms, interacts
with many different proteins and is able to localize to
different locations within the cell. It influences
neurite initiation, axon growth, dendritic
morphogenesis, vesicle trafficking, neuronal
maintenance, and neurodegeneration. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 59
Score = 25.1 bits (55), Expect = 4.6
Identities = 15/56 (26%), Positives = 29/56 (51%), Gaps = 4/56 (7%)
Query: 47 VLADYTATNTTELSVHKGQQVEVVHNSSAPPDWALVRLSLGEEC--SEGLVPTCVL 100
V+ DY A E+ V +G+ V+++ ++ + LV ++ +EG +P VL
Sbjct: 4 VIQDYYALKEDEICVSQGEVVQIL--AANQQNMFLVYRPATDQSPAAEGWIPGSVL 57
>gnl|CDD|212697 cd11763, SH3_SNX9_like, Src Homology 3 domain of Sorting Nexin 9
and similar proteins. Sorting nexins (SNXs) are Phox
homology (PX) domain containing proteins that are
involved in regulating membrane traffic and protein
sorting in the endosomal system. SNXs differ from each
other in their lipid-binding specificity, subcellular
localization and specific function in the endocytic
pathway. This subfamily consists of SH3 domain
containing SNXs including SNX9, SNX18, SNX33, and
similar proteins. SNX9 is localized to plasma membrane
endocytic sites and acts primarily in clathrin-mediated
endocytosis, while SNX18 is localized to peripheral
endosomal structures, and acts in a trafficking pathway
that is clathrin-independent but relies on AP-1 and
PACS1. SH3 domains are protein interaction domains that
bind to proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 55
Score = 25.0 bits (55), Expect = 5.0
Identities = 15/51 (29%), Positives = 22/51 (43%), Gaps = 4/51 (7%)
Query: 47 VLADYTATNTTELSVHKGQQVEVVHNSSAPPDWALVRLSLGEECSEGLVPT 97
L D+ + + ELS+ G +V + W R S GE GL P+
Sbjct: 4 ALYDFDSQPSGELSLRAG-EVLTITRQDVGDGWLEGRNSRGE---VGLFPS 50
>gnl|CDD|212992 cd12059, SH3_MLK1-3, Src Homology 3 domain of Mixed Lineage
Kinases 1, 2, and 3. MLKs 1, 2, and 3 are
Serine/Threonine Kinases (STKs), catalyzing the
transfer of the gamma-phosphoryl group from ATP to S/T
residues on protein substrates. MLKs act as
mitogen-activated protein kinase kinase kinases
(MAP3Ks, MKKKs, MAPKKKs), which phosphorylate and
activate MAPK kinases (MAPKKs or MKKs or MAP2Ks), which
in turn phosphorylate and activate MAPKs during
signaling cascades that are important in mediating
cellular responses to extracellular signals. MLKs play
roles in immunity and inflammation, as well as in cell
death, proliferation, and cell cycle regulation. Little
is known about the specific function of MLK1, also
called MAP3K9. It is capable of activating the c-Jun
N-terminal kinase pathway. Mice lacking both MLK1 and
MLK2 are viable, fertile, and have normal life spans.
MLK2, also called MAP3K10, is abundant in brain,
skeletal muscle, and testis. It functions upstream of
the MAPK, c-Jun N-terminal kinase. It binds
hippocalcin, a calcium-sensor protein that protects
neurons against calcium-induced cell death. Both MLK2
and hippocalcin may be associated with the pathogenesis
of Parkinson's disease. MLK3, also called MAP3K11, is
highly expressed in breast cancer cells and its
signaling through c-Jun N-terminal kinase has been
implicated in the migration, invasion, and malignancy
of cancer cells. It also functions as a negative
regulator of Inhibitor of Nuclear Factor-KappaB Kinase
(IKK) and thus, impacts inflammation and immunity. MLKs
contain an SH3 domain, a catalytic kinase domain, a
leucine zipper, a proline-rich region, and a CRIB
domain that mediates binding to GTP-bound Cdc42 and
Rac. SH3 domains are protein interaction domains that
bind to proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 58
Score = 25.1 bits (55), Expect = 5.4
Identities = 11/26 (42%), Positives = 17/26 (65%)
Query: 50 DYTATNTTELSVHKGQQVEVVHNSSA 75
DY A+ EL++ +G +VEV+ SA
Sbjct: 7 DYEASAEDELTLRRGDRVEVLSKDSA 32
Score = 24.3 bits (53), Expect = 9.4
Identities = 11/26 (42%), Positives = 17/26 (65%)
Query: 7 DYTAANTTELSVHKGQQVEVVHNSSA 32
DY A+ EL++ +G +VEV+ SA
Sbjct: 7 DYEASAEDELTLRRGDRVEVLSKDSA 32
>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 = 24.8 bits (54), Expect = 6.8
Identities = 13/30 (43%), Positives = 16/30 (53%), Gaps = 2/30 (6%)
Query: 50 DYTATNTTELSVHKGQQVEVVHNSSAPPDW 79
DYT ELS +G V ++H S A DW
Sbjct: 9 DYTGRTAQELSFKRG-DVLLLH-SKASSDW 36
Score = 24.8 bits (54), Expect = 6.9
Identities = 14/33 (42%), Positives = 17/33 (51%), Gaps = 2/33 (6%)
Query: 7 DYTAANTTELSVHKGQQVEVVHNSSAPPDWALG 39
DYT ELS +G V ++H S A DW G
Sbjct: 9 DYTGRTAQELSFKRG-DVLLLH-SKASSDWWRG 39
>gnl|CDD|212699 cd11765, SH3_Nck_1, First Src Homology 3 domain of Nck adaptor
proteins. Nck adaptor proteins regulate actin
cytoskeleton dynamics by linking proline-rich effector
molecules to protein tyrosine kinases and
phosphorylated signaling intermediates. They contain
three SH3 domains and a C-terminal SH2 domain. They
function downstream of the PDGFbeta receptor and are
involved in Rho GTPase signaling and actin dynamics.
Vertebrates contain two Nck adaptor proteins: Nck1
(also called Nckalpha) and Nck2 (also called Nckbeta or
Growth factor receptor-bound protein 4, Grb4), which
show partly overlapping functions but also bind
distinct targets. Their SH3 domains are involved in
recruiting downstream effector molecules, such as the
N-WASP/Arp2/3 complex, which when activated induces
actin polymerization that results in the production of
pedestals, or protrusions of the plasma membrane. The
first SH3 domain of Nck proteins preferentially binds
the PxxDY sequence, which is present in the CD3e
cytoplasmic tail. This binding inhibits phosphorylation
by Src kinases, resulting in the downregulation of TCR
surface expression. SH3 domains are protein interaction
domains that usually bind to proline-rich ligands with
moderate affinity and selectivity, preferentially a
PxxP motif. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 51
Score = 24.7 bits (54), Expect = 7.0
Identities = 9/24 (37%), Positives = 16/24 (66%)
Query: 7 DYTAANTTELSVHKGQQVEVVHNS 30
DYTA ELS+ K +++ ++ +S
Sbjct: 7 DYTAQGDQELSIKKNEKLTLLDDS 30
>gnl|CDD|212839 cd11906, SH3_BTK, Src Homology 3 domain of Bruton's tyrosine
kinase. BTK is a cytoplasmic (or nonreceptor) tyr
kinase containing Src homology protein interaction
domains (SH3, SH2) N-terminal to the catalytic tyr
kinase domain. It also contains an N-terminal
pleckstrin homology (PH) domain, which binds the
products of PI3K and allows membrane recruitment and
activation, and the Tec homology (TH) domain with
proline-rich and zinc-binding regions. Btk is expressed
in B-cells, and a variety of myeloid cells including
mast cells, platelets, neutrophils, and dendrictic
cells. It interacts with a variety of partners, from
cytosolic proteins to nuclear transcription factors,
suggesting a diversity of functions. Stimulation of a
diverse array of cell surface receptors, including
antigen engagement of the B-cell receptor (BCR), leads
to PH-mediated membrane translocation of Btk and
subsequent phosphorylation by Src kinase and
activation. Btk plays an important role in the life
cycle of B-cells including their development,
differentiation, proliferation, survival, and
apoptosis. Mutations in Btk cause the primary
immunodeficiency disease, X-linked agammaglobulinaemia
(XLA) in humans. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP
motifs. They play versatile and diverse roles in the
cell including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 55
Score = 24.4 bits (53), Expect = 7.2
Identities = 16/50 (32%), Positives = 25/50 (50%), Gaps = 5/50 (10%)
Query: 48 LADYTATNTTELSVHKGQQVEVVHNSSAPPDWALVRLSLGEECSEGLVPT 97
L DYT N +L + KG++ ++ S+ P W R G EG +P+
Sbjct: 6 LYDYTPMNAQDLQLRKGEEYVILEESNLP--WWRARDKNGR---EGYIPS 50
>gnl|CDD|213008 cd12075, SH3_Tks4_1, First Src homology 3 domain of Tyrosine
kinase substrate with four SH3 domains. Tks4, also
called SH3 and PX domain-containing protein 2B
(SH3PXD2B) or HOFI, is a Src substrate and scaffolding
protein that plays an important role in the formation
of podosomes and invadopodia, the dynamic actin-rich
structures that are related to cell migration and
cancer cell invasion. It is required in the formation
of functional podosomes, EGF-induced membrane ruffling,
and lamellipodia generation. It plays an important role
in cellular attachment and cell spreading. Tks4 is
essential for the localization of MT1-MMP
(membrane-type 1 matrix metalloproteinase) to
invadopodia. It contains an N-terminal Phox homology
(PX) domain and four SH3 domains. This model
characterizes the first SH3 domain of Tks4. SH3 domains
are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 55
Score = 24.6 bits (53), Expect = 7.8
Identities = 13/46 (28%), Positives = 27/46 (58%), Gaps = 1/46 (2%)
Query: 4 VLADYTAANTTELSVHKGQQVEVVHNSSAPPDWALGSGIEMTWVLA 49
V+A+Y ++E+S++ GQ V+++ + + W + + E WV A
Sbjct: 5 VVANYQKQESSEISLYVGQVVDIIEKNESGW-WFVSTADEQGWVPA 49
>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 = 24.2 bits (53), Expect = 7.9
Identities = 8/21 (38%), Positives = 11/21 (52%)
Query: 50 DYTATNTTELSVHKGQQVEVV 70
++ TN ELS KG + V
Sbjct: 7 NFEGTNEDELSFDKGDIITVT 27
>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 = 24.3 bits (53), Expect = 7.9
Identities = 17/48 (35%), Positives = 22/48 (45%), Gaps = 6/48 (12%)
Query: 49 ADYTATNTTELSVHKGQQVEVVHNSSAPPDWALVRLSLGEECSEGLVP 96
DYT + ELS KG + + S DW R L + +GLVP
Sbjct: 6 FDYTGRSERELSFKKGDSLTLYRQVS--DDWW--RGQLNGQ--DGLVP 47
>gnl|CDD|212944 cd12011, SH3_SLAP2, Src homology 3 domain of Src-Like Adaptor
Protein 2. SLAP2 plays a role in c-Cbl-dependent
regulation of CSF1R, a tyrosine kinase important for
myeloid cell growth and differentiation. It has been
shown to interact with CSF1R, c-Cbl, LAT, CD247, and
Zap70. SLAPs are adaptor proteins with limited
similarity to Src family tyrosine kinases. They contain
an N-terminal SH3 domain followed by an SH2 domain, and
a unique C-terminal sequence. They function in
regulating the signaling, ubiquitination, and
trafficking of T-cell receptor (TCR) and B-cell receptor
(BCR) components. The SH3 domain of SLAP forms a complex
with v-Abl. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate affinity
and selectivity, preferentially to PxxP motifs. They
play versatile and diverse roles in the cell including
the regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 55
Score = 24.3 bits (53), Expect = 8.2
Identities = 17/56 (30%), Positives = 29/56 (51%), Gaps = 8/56 (14%)
Query: 48 LADYTATNTTELSVHKGQQVEVVHNSSAPPDWALVRLSL-GEECSEGLVPT-CVLK 101
L ++ + TELS+ G+Q+ ++ S DW V ++ G EC +P+ V K
Sbjct: 5 LCNFPSGGPTELSIRMGEQLTIL---SEDGDWWKVSSAVTGREC---YIPSNYVAK 54
>gnl|CDD|212788 cd11854, SH3_Fus1p, Src homology 3 domain of yeast cell fusion
protein Fus1p. Fus1p is required at the cell surface
for cell fusion during the mating response in yeast. It
requires Bch1p and Bud7p, which are Chs5p-Arf1p binding
proteins, for localization to the plasma membrane. It
acts as a scaffold protein to assemble a cell surface
complex which is involved in septum degradation and
inhibition of the NOG pathway to promote cell fusion.
The SH3 domain of Fus1p interacts with Bin1p, a formin
that controls the assembly of actin cables in response
to Cdc42 signaling. It has been shown to bind the
motif, R(S/T)(S/T)SL, instead of PxxP motifs. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 56
Score = 24.2 bits (53), Expect = 8.6
Identities = 14/54 (25%), Positives = 24/54 (44%), Gaps = 4/54 (7%)
Query: 44 MTWVLADYTATNTTELSVHKGQQVEVVHNSSAPPD-WALVRLSLGEECSEGLVP 96
+ V++ + + EL + G+ V V+ D W LV + G G+VP
Sbjct: 1 LMTVISTFEPSLDDELLIKVGETVRVLAEYD---DGWCLVERADGLNGDRGMVP 51
>gnl|CDD|130412 TIGR01345, malate_syn_G, malate synthase G. This model describes
the G isozyme of malate synthase. Isocitrate synthase
and malate synthase form the glyoxylate shunt, which
generates additional TCA cycle intermediates [Energy
metabolism, TCA cycle].
Length = 721
Score = 26.0 bits (57), Expect = 8.6
Identities = 16/45 (35%), Positives = 25/45 (55%), Gaps = 1/45 (2%)
Query: 51 YTATNTTELSVHKGQQVEVVHNSSAPPDWALVRLSLGEECSEGLV 95
YTA N +E+S+H G+ + V N ++ S GEE EG++
Sbjct: 318 YTAANGSEISLH-GRSLLFVRNVGHLMTIPVIWDSEGEEIPEGIL 361
>gnl|CDD|212885 cd11952, SH3_iASPP, Src Homology 3 (SH3) domain of Inhibitor of
ASPP protein (iASPP). iASPP, also called
RelA-associated inhibitor (RAI), is an oncoprotein that
inhibits the apoptotic transactivation potential of
p53. It is upregulated in human breast cancers
expressing wild-type p53, in acute leukemias regardless
of the p53 mutation status, as well as in ovarian
cancer where it is associated with poor patient outcome
and chemoresistance. iASPP is also a binding partner
and negative regulator of p65RelA, which promotes cell
proliferation and inhibits apoptosis; p65RelA has the
opposite effect on cell growth compared to the p53
family. It contains a proline-rich region, four ankyrin
(ANK) repeats, and an SH3 domain at its C-terminal
half. The SH3 domain and the ANK repeats of iASPP
contribute to the p53 binding site; they bind to the
DNA binding domain of p53. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles
in the cell including the regulation of enzymes,
changing the subcellular localization of signaling
pathway components, and mediating the formation of
multiprotein complex assemblies.
Length = 56
Score = 24.5 bits (53), Expect = 9.2
Identities = 17/51 (33%), Positives = 21/51 (41%), Gaps = 4/51 (7%)
Query: 46 WVLADYTATNTTELSVHKGQQVEVVHNSSAPPDWALVRLSLGEECSEGLVP 96
+ L DY+A ELS +G V V+ DW L EG VP
Sbjct: 4 YALWDYSAEFPDELSFKEGDMVTVLRKDGEGTDWWWASLC----GREGYVP 50
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
0.312 0.128 0.389
Gapped
Lambda K H
0.267 0.0813 0.140
Matrix: BLOSUM62
Gap Penalties: Existence: 11, Extension: 1
Number of Sequences: 44354
Number of Hits to DB: 7,201,103
Number of extensions: 598842
Number of successful extensions: 499
Number of sequences better than 10.0: 1
Number of HSP's gapped: 498
Number of HSP's successfully gapped: 138
Length of query: 147
Length of database: 10,937,602
Length adjustment: 88
Effective length of query: 59
Effective length of database: 7,034,450
Effective search space: 415032550
Effective search space used: 415032550
Neighboring words threshold: 11
Window for multiple hits: 40
X1: 16 ( 7.2 bits)
X2: 38 (14.6 bits)
X3: 64 (24.7 bits)
S1: 42 (21.9 bits)
S2: 54 (24.4 bits)