RPS-BLAST 2.2.26 [Sep-21-2011]
Database: CDD.v3.10
44,354 sequences; 10,937,602 total letters
Searching..................................................done
Query= psy6389
(395 letters)
>gnl|CDD|198248 cd10385, SH2_SOCS4, Src homology 2 (SH2) domain found in suppressor
of cytokine signaling (SOCS) proteins. SH2 domain found
in SOCS proteins. SOCS was first recognized as a group
of cytokine-inducible SH2 (CIS) domain proteins
comprising eight family members in human (CIS and
SOCS1-SOCS7). In addition to the SH2 domain, SOCS
proteins have a variable N-terminal domain and a
conserved SOCS box in the C-terminal domain. SOCS
proteins bind to a substrate via their SH2 domain. The
prototypical members, CIS and SOCS1-SOCS3, have been
shown to regulate growth hormone signaling in vitro and
in a classic negative feedback response compete for
binding at phosphotyrosine sites in JAK kinase and
receptor pathways to displace effector proteins and
target bound receptors for proteasomal degradation. Loss
of SOCS activity results in excessive cytokine signaling
associated with a variety of hematopoietic, autoimmune,
and inflammatory diseases and certain cancers. Members
(SOCS4-SOCS7) were identified by their conserved SOCS
box, an adapter motif of 3 helices that associates
substrate binding domains, such as the SOCS SH2 domain,
ankryin, and WD40 with ubiquitin ligase components.
These show limited cytokine induction. In general SH2
domains are involved in signal transduction. They
typically bind pTyr-containing ligands via two surface
pockets, a pTyr and hydrophobic binding pocket, allowing
proteins with SH2 domains to localize to tyrosine
phosphorylated sites.
Length = 101
Score = 156 bits (396), Expect = 2e-47
Identities = 72/101 (71%), Positives = 82/101 (81%)
Query: 233 VPDLKDITSCSFYWGKMDRYEAEKLLESWPEGTFLLRDSAQEEYLFSVSFRKFGRSLHAR 292
VPDL I + YWG MD+Y AE LLE PEGTFLLRDSAQE+YLFSVSFR++ RSLHAR
Sbjct: 1 VPDLLQINNNPCYWGVMDKYAAEALLEGKPEGTFLLRDSAQEDYLFSVSFRRYSRSLHAR 60
Query: 293 IEQWNHKFSFDSHDPNVYASPTVCGLIEHYKDPTLVMFFEP 333
IEQWNH FSFD+HDP V+ SP + GL+EHYKDP+ MFFEP
Sbjct: 61 IEQWNHNFSFDAHDPCVFHSPDITGLLEHYKDPSACMFFEP 101
>gnl|CDD|198178 cd09923, SH2_SOCS_family, Src homology 2 (SH2) domain found in
suppressor of cytokine signaling (SOCS) family. SH2
domain found in SOCS proteins. SOCS was first recognized
as a group of cytokine-inducible SH2 (CIS) domain
proteins comprising eight family members in human (CIS
and SOCS1-SOCS7). In addition to the SH2 domain, SOCS
proteins have a variable N-terminal domain and a
conserved SOCS box in the C-terminal domain. SOCS
proteins bind to a substrate via their SH2 domain. The
prototypical members, CIS and SOCS1-SOCS3, have been
shown to regulate growth hormone signaling in vitro and
in a classic negative feedback response compete for
binding at phosphotyrosine sites in JAK kinase and
receptor pathways to displace effector proteins and
target bound receptors for proteasomal degradation. Loss
of SOCS activity results in excessive cytokine signaling
associated with a variety of hematopoietic, autoimmune,
and inflammatory diseases and certain cancers. Members
(SOCS4-SOCS7) were identified by their conserved SOCS
box, an adapter motif of 3 helices that associates
substrate binding domains, such as the SOCS SH2 domain,
ankryin, and WD40 with ubiquitin ligase components.
These show limited cytokine induction. In general SH2
domains are involved in signal transduction. They
typically bind pTyr-containing ligands via two surface
pockets, a pTyr and hydrophobic binding pocket, allowing
proteins with SH2 domains to localize to tyrosine
phosphorylated sites.
Length = 81
Score = 138 bits (349), Expect = 1e-40
Identities = 51/81 (62%), Positives = 60/81 (74%)
Query: 243 SFYWGKMDRYEAEKLLESWPEGTFLLRDSAQEEYLFSVSFRKFGRSLHARIEQWNHKFSF 302
+YWG + RYEAE+LL PEGTFL+RDS+ YLFSVSFR +GR+LHARIE N +FSF
Sbjct: 1 GWYWGGITRYEAEELLAGKPEGTFLVRDSSDSRYLFSVSFRTYGRTLHARIEYSNGRFSF 60
Query: 303 DSHDPNVYASPTVCGLIEHYK 323
DS DP+V P V LIEHY
Sbjct: 61 DSSDPSVPRFPCVVELIEHYV 81
>gnl|CDD|198249 cd10386, SH2_SOCS5, Src homology 2 (SH2) domain found in
suppressor of cytokine signaling (SOCS) family. SH2
domain found in SOCS proteins. SOCS was first recognized
as a group of cytokine-inducible SH2 (CIS) domain
proteins comprising eight family members in human (CIS
and SOCS1-SOCS7). In addition to the SH2 domain, SOCS
proteins have a variable N-terminal domain and a
conserved SOCS box in the C-terminal domain. SOCS
proteins bind to a substrate via their SH2 domain. The
prototypical members, CIS and SOCS1-SOCS3, have been
shown to regulate growth hormone signaling in vitro and
in a classic negative feedback response compete for
binding at phosphotyrosine sites in JAK kinase and
receptor pathways to displace effector proteins and
target bound receptors for proteasomal degradation. Loss
of SOCS activity results in excessive cytokine signaling
associated with a variety of hematopoietic, autoimmune,
and inflammatory diseases and certain cancers. Members
(SOCS4-SOCS7) were identified by their conserved SOCS
box, an adapter motif of 3 helices that associates
substrate binding domains, such as the SOCS SH2 domain,
ankryin, and WD40 with ubiquitin ligase components.
These show limited cytokine induction. In general SH2
domains are involved in signal transduction. They
typically bind pTyr-containing ligands via two surface
pockets, a pTyr and hydrophobic binding pocket, allowing
proteins with SH2 domains to localize to tyrosine
phosphorylated sites.
Length = 81
Score = 135 bits (340), Expect = 2e-39
Identities = 63/79 (79%), Positives = 69/79 (87%)
Query: 245 YWGKMDRYEAEKLLESWPEGTFLLRDSAQEEYLFSVSFRKFGRSLHARIEQWNHKFSFDS 304
YWG MDRYEAE LLE PEGTFLLRDSAQE+YLFSVSFR++ RSLHARIEQWNH FSFD+
Sbjct: 3 YWGVMDRYEAEALLEGKPEGTFLLRDSAQEDYLFSVSFRRYNRSLHARIEQWNHNFSFDA 62
Query: 305 HDPNVYASPTVCGLIEHYK 323
HDP V+ S TV GL+EHYK
Sbjct: 63 HDPCVFHSSTVTGLLEHYK 81
>gnl|CDD|198251 cd10388, SH2_SOCS7, Src homology 2 (SH2) domain found in
suppressor of cytokine signaling (SOCS) proteins. SH2
domain found in SOCS proteins. SOCS was first recognized
as a group of cytokine-inducible SH2 (CIS) domain
proteins comprising eight family members in human (CIS
and SOCS1-SOCS7). In addition to the SH2 domain, SOCS
proteins have a variable N-terminal domain and a
conserved SOCS box in the C-terminal domain. SOCS
proteins bind to a substrate via their SH2 domain. The
prototypical members, CIS and SOCS1-SOCS3, have been
shown to regulate growth hormone signaling in vitro and
in a classic negative feedback response compete for
binding at phosphotyrosine sites in JAK kinase and
receptor pathways to displace effector proteins and
target bound receptors for proteasomal degradation. Loss
of SOCS activity results in excessive cytokine signaling
associated with a variety of hematopoietic, autoimmune,
and inflammatory diseases and certain cancers. Members
(SOCS4-SOCS7) were identified by their conserved SOCS
box, an adapter motif of 3 helices that associates
substrate binding domains, such as the SOCS SH2 domain,
ankryin, and WD40 with ubiquitin ligase components.
These show limited cytokine induction. In general SH2
domains are involved in signal transduction. They
typically bind pTyr-containing ligands via two surface
pockets, a pTyr and hydrophobic binding pocket, allowing
proteins with SH2 domains to localize to tyrosine
phosphorylated sites.
Length = 101
Score = 88.2 bits (219), Expect = 1e-21
Identities = 36/85 (42%), Positives = 54/85 (63%)
Query: 236 LKDITSCSFYWGKMDRYEAEKLLESWPEGTFLLRDSAQEEYLFSVSFRKFGRSLHARIEQ 295
L+++ C +YWG M +AEK+L + P+G+FL+RDS+ + Y+FS+SFR G H RIEQ
Sbjct: 4 LRELKDCGWYWGPMSWEDAEKVLSNKPDGSFLVRDSSDDRYIFSLSFRSQGSVHHTRIEQ 63
Query: 296 WNHKFSFDSHDPNVYASPTVCGLIE 320
+ FS S + V S ++ IE
Sbjct: 64 YQGTFSLGSRNKFVDRSQSLVEFIE 88
>gnl|CDD|198250 cd10387, SH2_SOCS6, Src homology 2 (SH2) domain found in
suppressor of cytokine signaling (SOCS) proteins. SH2
domain found in SOCS proteins. SOCS was first recognized
as a group of cytokine-inducible SH2 (CIS) domain
proteins comprising eight family members in human (CIS
and SOCS1-SOCS7). In addition to the SH2 domain, SOCS
proteins have a variable N-terminal domain and a
conserved SOCS box in the C-terminal domain. SOCS
proteins bind to a substrate via their SH2 domain. The
prototypical members, CIS and SOCS1-SOCS3, have been
shown to regulate growth hormone signaling in vitro and
in a classic negative feedback response compete for
binding at phosphotyrosine sites in JAK kinase and
receptor pathways to displace effector proteins and
target bound receptors for proteasomal degradation. Loss
of SOCS activity results in excessive cytokine signaling
associated with a variety of hematopoietic, autoimmune,
and inflammatory diseases and certain cancers. Members
(SOCS4-SOCS7) were identified by their conserved SOCS
box, an adapter motif of 3 helices that associates
substrate binding domains, such as the SOCS SH2 domain,
ankryin, and WD40 with ubiquitin ligase components.
These show limited cytokine induction. In general SH2
domains are involved in signal transduction. They
typically bind pTyr-containing ligands via two surface
pockets, a pTyr and hydrophobic binding pocket, allowing
proteins with SH2 domains to localize to tyrosine
phosphorylated sites.
Length = 100
Score = 84.5 bits (209), Expect = 4e-20
Identities = 39/87 (44%), Positives = 57/87 (65%), Gaps = 1/87 (1%)
Query: 235 DLKDITSCSFYWGKMDRYEAEKLLESWPEGTFLLRDSAQEEYLFSVSFRKFGRSLHARIE 294
+LK + +YWG + R+EAE L + P+G+FL+RDS+ + YL S+SFR G++LH RIE
Sbjct: 3 ELKKLAKQGWYWGPITRWEAEGKLANVPDGSFLVRDSSDDRYLLSLSFRSHGKTLHTRIE 62
Query: 295 QWNHKFSFDSHDPNVYASPTVCGLIEH 321
N +FSF P+V ++ LIEH
Sbjct: 63 HSNGRFSF-YEQPDVEGHTSIVDLIEH 88
>gnl|CDD|214585 smart00252, SH2, Src homology 2 domains. Src homology 2 domains
bind phosphotyrosine-containing polypeptides via 2
surface pockets. Specificity is provided via interaction
with residues that are distinct from the
phosphotyrosine. Only a single occurrence of a SH2
domain has been found in S. cerevisiae.
Length = 84
Score = 73.8 bits (182), Expect = 1e-16
Identities = 29/88 (32%), Positives = 45/88 (51%), Gaps = 5/88 (5%)
Query: 242 CSFYWGKMDRYEAEKLLESWPEGTFLLRDSAQEEYLFSVSFRKFGRSLHARIEQWNH-KF 300
+Y G + R EAEKLL++ +G FL+RDS + +S R G+ H RI + KF
Sbjct: 1 QPWYHGFISREEAEKLLKNEGDGDFLVRDSESSPGDYVLSVRVKGKVKHYRIRRNEDGKF 60
Query: 301 SFDSHDPNVYASPTVCGLIEHYKDPTLV 328
+ P++ L+EHY+ +L
Sbjct: 61 YLEG----GRKFPSLVELVEHYQKNSLG 84
>gnl|CDD|198245 cd10382, SH2_SOCS1, Src homology 2 (SH2) domain found in
suppressor of cytokine signaling (SOCS) proteins. SH2
domain found in SOCS proteins. SOCS was first recognized
as a group of cytokine-inducible SH2 (CIS) domain
proteins comprising eight family members in human (CIS
and SOCS1-SOCS7). In addition to the SH2 domain, SOCS
proteins have a variable N-terminal domain and a
conserved SOCS box in the C-terminal domain. SOCS
proteins bind to a substrate via their SH2 domain. The
prototypical members, CIS and SOCS1-SOCS3, have been
shown to regulate growth hormone signaling in vitro and
in a classic negative feedback response compete for
binding at phosphotyrosine sites in JAK kinase and
receptor pathways to displace effector proteins and
target bound receptors for proteasomal degradation. Loss
of SOCS activity results in excessive cytokine signaling
associated with a variety of hematopoietic, autoimmune,
and inflammatory diseases and certain cancers. Members
(SOCS4-SOCS7) were identified by their conserved SOCS
box, an adapter motif of 3 helices that associates
substrate binding domains, such as the SOCS SH2 domain,
ankryin, and WD40 with ubiquitin ligase components.
These show limited cytokine induction. In general SH2
domains are involved in signal transduction. They
typically bind pTyr-containing ligands via two surface
pockets, a pTyr and hydrophobic binding pocket, allowing
proteins with SH2 domains to localize to tyrosine
phosphorylated sites.
Length = 98
Score = 68.2 bits (167), Expect = 2e-14
Identities = 28/84 (33%), Positives = 41/84 (48%), Gaps = 3/84 (3%)
Query: 239 ITSCSFYWGKMDRYEAEKLLESWPEGTFLLRDSAQEEYLFSVSFRKFGRSLHARIEQWNH 298
+ + FYWG + EA L+ P GTFL+RDS Q+ F++S + + RI
Sbjct: 7 LDASGFYWGPLSVEEAHAKLKREPVGTFLIRDSRQKNCFFALSVKMASGPVSIRILFKAG 66
Query: 299 KFSFDSHDPNVYASPTVCGLIEHY 322
KFS D + + L+EHY
Sbjct: 67 KFSLDGSK---ESFDCLFKLLEHY 87
>gnl|CDD|239708 cd03739, SOCS_SOCS5, SOCS (suppressors of cytokine signaling) box
of SOCS5-like proteins. Together with CIS1, the CIS/SOCS
family of proteins is characterized by the presence of a
C-terminal SOCS box and a central SH2 domain. SOCS5
inhibits Th2 differentiation by inhibiting IL-4
signaling. The general function of the SOCS box is the
recruitment of the ubiquitin-transferase system. The
SOCS box interacts with Elongins B and C, Cullin-5 or
Cullin-2, Rbx-1, and E2. Therefore, SOCS-box-containing
proteins probably function as E3 ubiquitin ligases and
mediate the degradation of proteins associated through
their N-terminal regions.
Length = 57
Score = 64.6 bits (157), Expect = 1e-13
Identities = 26/43 (60%), Positives = 32/43 (74%)
Query: 343 FTFPLQHICRSVICSNISYDGISQLQLPKTLKSYLKEYHYKQR 385
F F LQ+ICR+VIC +YDGI L LP L+ +LKEYHYKQ+
Sbjct: 2 FPFSLQYICRAVICRCTTYDGIDALPLPSMLQDFLKEYHYKQK 44
>gnl|CDD|198246 cd10383, SH2_SOCS2, Src homology 2 (SH2) domain found in
suppressor of cytokine signaling (SOCS) proteins. SH2
domain found in SOCS proteins. SOCS was first recognized
as a group of cytokine-inducible SH2 (CIS) domain
proteins comprising eight family members in human (CIS
and SOCS1-SOCS7). In addition to the SH2 domain, SOCS
proteins have a variable N-terminal domain and a
conserved SOCS box in the C-terminal domain. SOCS
proteins bind to a substrate via their SH2 domain. The
prototypical members, CIS and SOCS1-SOCS3, have been
shown to regulate growth hormone signaling in vitro and
in a classic negative feedback response compete for
binding at phosphotyrosine sites in JAK kinase and
receptor pathways to displace effector proteins and
target bound receptors for proteasomal degradation. Loss
of SOCS activity results in excessive cytokine signaling
associated with a variety of hematopoietic, autoimmune,
and inflammatory diseases and certain cancers. Members
(SOCS4-SOCS7) were identified by their conserved SOCS
box, an adapter motif of 3 helices that associates
substrate binding domains, such as the SOCS SH2 domain,
ankryin, and WD40 with ubiquitin ligase components.
These show limited cytokine induction. In general SH2
domains are involved in signal transduction. They
typically bind pTyr-containing ligands via two surface
pockets, a pTyr and hydrophobic binding pocket, allowing
proteins with SH2 domains to localize to tyrosine
phosphorylated sites.
Length = 103
Score = 65.7 bits (160), Expect = 2e-13
Identities = 31/90 (34%), Positives = 51/90 (56%), Gaps = 3/90 (3%)
Query: 236 LKDITSCSFYWGKMDRYEAEKLLESWPEGTFLLRDSAQEEYLFSVSFRKFGRSLHARIEQ 295
+++++ +YWG M EA++ L+ PEGTFL+RDS+ +YL ++S + + RIE
Sbjct: 1 MRELSQTGWYWGSMTVNEAKEKLQDAPEGTFLVRDSSHSDYLLTISVKTSAGPTNLRIEY 60
Query: 296 WNHKFSFDS---HDPNVYASPTVCGLIEHY 322
+ KF DS + +V LIE+Y
Sbjct: 61 QDGKFRLDSIICVKSKLKQFDSVVHLIEYY 90
>gnl|CDD|239707 cd03738, SOCS_SOCS4, SOCS (suppressors of cytokine signaling) box
of SOCS4-like proteins. Together with CIS1, the CIS/SOCS
family of proteins is characterized by the presence of a
C-terminal SOCS box and a central SH2 domain. The
general function of the SOCS box is the recruitment of
the ubiquitin-transferase system. The SOCS box interacts
with Elongins B and C, Cullin-5 or Cullin-2, Rbx-1, and
E2. Therefore, SOCS-box-containing proteins probably
function as E3 ubiquitin ligases and mediate the
degradation of proteins associated through their
N-terminal regions.
Length = 56
Score = 63.1 bits (153), Expect = 4e-13
Identities = 26/43 (60%), Positives = 33/43 (76%)
Query: 343 FTFPLQHICRSVICSNISYDGISQLQLPKTLKSYLKEYHYKQR 385
F F LQHICR+VIC+ +YDGI L +P ++K YLKEYHYK +
Sbjct: 2 FPFSLQHICRTVICNCTTYDGIDALPIPSSMKLYLKEYHYKSK 44
>gnl|CDD|239687 cd03717, SOCS_SOCS_like, SOCS (suppressors of cytokine signaling)
box of SOCS-like proteins. The CIS/SOCS family of
proteins is characterized by the presence of a
C-terminal SOCS box and a central SH2 domain. These
intracellular proteins regulate the responses of immune
cells to cytokines. Identified as negative regulators of
the cytokine-JAK-STAT pathway, they seem to play a role
in many immunological and pathological processes. The
function of the SOCS box is the recruitment of the
ubiquitin-transferase system. Related SOCS boxes are
also present in Rab40-like proteins and insect proteins
of unknown function that also contain a NEUZ (domain in
neuralized proteins) domain.
Length = 39
Score = 61.5 bits (150), Expect = 1e-12
Identities = 20/39 (51%), Positives = 22/39 (56%)
Query: 342 NFTFPLQHICRSVICSNISYDGISQLQLPKTLKSYLKEY 380
LQH+CR VI D I QL LP+ LK YLKEY
Sbjct: 1 TSVRSLQHLCRFVIRQCTRRDLIDQLPLPRRLKDYLKEY 39
>gnl|CDD|198173 cd00173, SH2, Src homology 2 (SH2) domain. In general, SH2 domains
are involved in signal transduction; they bind
pTyr-containing polypeptide ligands via two surface
pockets, a pTyr and hydrophobic binding pocket, allowing
proteins with SH2 domains to localize to tyrosine
phosphorylated sites. They are present in a wide array
of proteins including: adaptor proteins (Nck1, Crk,
Grb2), scaffolds (Slp76, Shc, Dapp1), kinases (Src, Syk,
Fps, Tec), phosphatases (Shp-1, Shp-2), transcription
factors (STAT1), Ras signaling molecules (Ras-Gap),
ubiquitination factors (c-Cbl), cytoskeleton regulators
(Tensin), signal regulators (SAP), and phospholipid
second messengers (PLCgamma), amongst others.
Length = 79
Score = 61.7 bits (150), Expect = 2e-12
Identities = 26/81 (32%), Positives = 41/81 (50%), Gaps = 3/81 (3%)
Query: 243 SFYWGKMDRYEAEKLLESWPEGTFLLRDSAQEEYLFSVSFR-KFGRSLHARIEQWNHKFS 301
++ G + R EAE+LL P+GTFL+R+S+ E + +S R G+ H IE+ +
Sbjct: 1 PWFHGSISREEAERLLRGKPDGTFLVRESSSEPGDYVLSVRSGDGKVKHYLIERNEGGYY 60
Query: 302 FDSHDPNVYASPTVCGLIEHY 322
+ S L+EHY
Sbjct: 61 LLGGSGRTFPSLP--ELVEHY 79
>gnl|CDD|198285 cd10718, SH2_CIS, Src homology 2 (SH2) domain found in
cytokine-inducible SH2-containing protein (CIS). CIS
family members are known to be cytokine-inducible
negative regulators of cytokine signaling. The
expression of the CIS gene can be induced by IL2, IL3,
GM-CSF and EPO in hematopoietic cells.
Proteasome-mediated degradation of this protein has been
shown to be involved in the inactivation of the
erythropoietin receptor. Suppressor of cytokine
signalling (SOCS) was first recognized as a group of
cytokine-inducible SH2 (CIS) domain proteins comprising
eight family members in human (CIS and SOCS1-SOCS7). In
addition to the SH2 domain, SOCS proteins have a
variable N-terminal domain and a conserved SOCS box in
the C-terminal domain. SOCS proteins bind to a substrate
via their SH2 domain. The prototypical members, CIS and
SOCS1-SOCS3, have been shown to regulate growth hormone
signaling in vitro and in a classic negative feedback
response compete for binding at phosphotyrosine sites in
JAK kinase and receptor pathways to displace effector
proteins and target bound receptors for proteasomal
degradation. Loss of SOCS activity results in excessive
cytokine signaling associated with a variety of
hematopoietic, autoimmune, and inflammatory diseases and
certain cancers. In general SH2 domains are involved in
signal transduction. They typically bind
pTyr-containing ligands via two surface pockets, a pTyr
and hydrophobic binding pocket, allowing proteins with
SH2 domains to localize to tyrosine phosphorylated
sites.
Length = 88
Score = 57.5 bits (139), Expect = 9e-11
Identities = 29/82 (35%), Positives = 45/82 (54%), Gaps = 3/82 (3%)
Query: 244 FYWGKMDRYEAEKLLESWPEGTFLLRDSAQEEYLFSVSFRKFGRSLHARIEQWNHKFSFD 303
+YWG + EA + L+ PEGTFL+RDS+ Y+ ++S + + RIE + F D
Sbjct: 6 WYWGSITASEAHQALQKAPEGTFLVRDSSHPSYMLTLSVKTTRGPTNVRIEYSDGSFRLD 65
Query: 304 SH---DPNVYASPTVCGLIEHY 322
S P + + P V L++HY
Sbjct: 66 SSSLARPRLLSFPDVVSLVQHY 87
>gnl|CDD|215658 pfam00017, SH2, SH2 domain.
Length = 77
Score = 54.1 bits (131), Expect = 1e-09
Identities = 28/89 (31%), Positives = 42/89 (47%), Gaps = 22/89 (24%)
Query: 244 FYWGKMDRYEAEKLL-ESWPEGTFLLRDSAQEEYLFSVSFRKFGRSLHARIEQ------- 295
+Y GK+ R EAE+LL P+GTFL+R+S + +++S R GR H RI+
Sbjct: 1 WYHGKISREEAERLLLNPKPDGTFLVRESESKPGDYTLSVRDDGRVKHYRIQSLDNGGYY 60
Query: 296 --WNHKFSFDSHDPNVYASPTVCGLIEHY 322
F ++ L+EHY
Sbjct: 61 ISGGVTF------------NSLPELVEHY 77
>gnl|CDD|198247 cd10384, SH2_SOCS3, Src homology 2 (SH2) domain found in
suppressor of cytokine signaling (SOCS) proteins. SH2
domain found in SOCS proteins. SOCS was first recognized
as a group of cytokine-inducible SH2 (CIS) domain
proteins comprising eight family members in human (CIS
and SOCS1-SOCS7). In addition to the SH2 domain, SOCS
proteins have a variable N-terminal domain and a
conserved SOCS box in the C-terminal domain. SOCS
proteins bind to a substrate via their SH2 domain. The
prototypical members, CIS and SOCS1-SOCS3, have been
shown to regulate growth hormone signaling in vitro and
in a classic negative feedback response compete for
binding at phosphotyrosine sites in JAK kinase and
receptor pathways to displace effector proteins and
target bound receptors for proteasomal degradation. Loss
of SOCS activity results in excessive cytokine signaling
associated with a variety of hematopoietic, autoimmune,
and inflammatory diseases and certain cancers. Members
(SOCS4-SOCS7) were identified by their conserved SOCS
box, an adapter motif of 3 helices that associates
substrate binding domains, such as the SOCS SH2 domain,
ankryin, and WD40 with ubiquitin ligase components.
These show limited cytokine induction. In general SH2
domains are involved in signal transduction. They
typically bind pTyr-containing ligands via two surface
pockets, a pTyr and hydrophobic binding pocket, allowing
proteins with SH2 domains to localize to tyrosine
phosphorylated sites.
Length = 101
Score = 54.0 bits (130), Expect = 2e-09
Identities = 29/87 (33%), Positives = 44/87 (50%), Gaps = 5/87 (5%)
Query: 244 FYWGKMDRYEAEKLLESWPEGTFLLRDSAQEEYLFSVSFRKFGRSLHARIEQWNHKFSFD 303
FYW + EA LL + P GTFL+RDS+ + + F++S + + + RI+ FS
Sbjct: 12 FYWSTVSGKEANLLLSAEPAGTFLIRDSSDQRHFFTLSVKTESGTKNLRIQCEGGSFSLQ 71
Query: 304 SHDP----NVYASPTVCGLIEHYKDPT 326
+ DP V V L+ HY P+
Sbjct: 72 T-DPRSTQPVPRFDCVLKLVHHYMPPS 97
>gnl|CDD|198193 cd09940, SH2_Vav_family, Src homology 2 (SH2) domain found in the
Vav family. Vav proteins are involved in several
processes that require cytoskeletal reorganization, such
as the formation of the immunological synapse (IS),
phagocytosis, platelet aggregation, spreading, and
transformation. Vavs function as guanine nucleotide
exchange factors (GEFs) for the Rho/Rac family of
GTPases. Vav family members have several conserved
motifs/domains including: a leucine-rich region, a
leucine-zipper, a calponin homology (CH) domain, an
acidic domain, a Dbl-homology (DH) domain, a pleckstrin
homology (PH) domain, a cysteine-rich domain, 2 SH3
domains, a proline-rich region, and a SH2 domain. Vavs
are the only known Rho GEFs that have both the DH/PH
motifs and SH2/SH3 domains in the same protein. The
leucine-rich helix-loop-helix (HLH) domain is thought to
be involved in protein heterodimerization with other HLH
proteins and it may function as a negative regulator by
forming inactive heterodimers. The CH domain is usually
involved in the association with filamentous actin, but
in Vav it controls NFAT stimulation, Ca2+ mobilization,
and its transforming activity. Acidic domains are
involved in protein-protein interactions and contain
regulatory tyrosines. The DH domain is a GDP-GTP
exchange factor on Rho/Rac GTPases. The PH domain in
involved in interactions with GTP-binding proteins,
lipids and/or phosphorylated serine/threonine residues.
The SH3 domain is involved in localization of proteins
to specific sites within the cell interacting with
protein with proline-rich sequences. The SH2 domain
mediates a high affinity interaction with tyrosine
phosphorylated proteins. There are three Vav mammalian
family members: Vav1 which is expressed in the
hematopoietic system, Vav2 and Vav3 are more
ubiquitously expressed. The members here include insect
and amphibian Vavs. In general SH2 domains are involved
in signal transduction. They typically bind
pTyr-containing ligands via two surface pockets, a pTyr
and hydrophobic binding pocket, allowing proteins with
SH2 domains to localize to tyrosine phosphorylated
sites.
Length = 102
Score = 51.5 bits (124), Expect = 2e-08
Identities = 25/96 (26%), Positives = 48/96 (50%), Gaps = 5/96 (5%)
Query: 238 DITSCSFYWGKMDRYEAEKLLESWPEGTFLLRDSAQEEYLFSVSFRKFGRSLHARIEQ-W 296
D++ ++ G+M+R AE LE+ P+GT+L+R Q E +++S + G H +IEQ
Sbjct: 1 DLSEFLWFVGEMERDTAENRLENRPDGTYLVRVRPQGETQYALSIKYNGDVKHMKIEQRS 60
Query: 297 NHKFSFDSHDPNVYASPTVCGLIEHYKDPTLVMFFE 332
+ + ++ L+ +Y+ +L F
Sbjct: 61 DGLYYLSES----RHFKSLVELVNYYERNSLGENFA 92
>gnl|CDD|128549 smart00253, SOCS, suppressors of cytokine signalling. suppressors
of cytokine signalling.
Length = 43
Score = 48.1 bits (115), Expect = 6e-08
Identities = 16/43 (37%), Positives = 18/43 (41%)
Query: 338 PLHRNFTFPLQHICRSVICSNISYDGISQLQLPKTLKSYLKEY 380
+ LQH+CR I D I L LP LK YL Y
Sbjct: 1 LPRPSNVPSLQHLCRFTIRRCTRTDQIKTLPLPPKLKDYLSYY 43
>gnl|CDD|239641 cd03587, SOCS, SOCS (suppressors of cytokine signaling) box. The
SOCS box is found in the C-terminal region of CIS/SOCS
family proteins (in combination with a SH2 domain), ASBs
(ankyrin repeat-containing proteins with a SOCS box),
SSBs (SPRY domain-containing proteins with a SOCS box),
and WSBs (WD40 repeat-containing proteins with a SOCS
box), as well as, other miscellaneous proteins. The
function of the SOCS box is the recruitment of the
ubiquitin-transferase system. The SOCS box interacts
with Elongins B and C, Cullin-5 or Cullin-2, Rbx-1, and
E2. Therefore, SOCS-box-containing proteins probably
function as E3 ubiquitin ligases and mediate the
degradation of proteins associated through their
N-terminal regions.
Length = 41
Score = 47.9 bits (115), Expect = 6e-08
Identities = 15/38 (39%), Positives = 18/38 (47%), Gaps = 3/38 (7%)
Query: 346 PLQHICRSVICSNI---SYDGISQLQLPKTLKSYLKEY 380
LQH+CR I + D I +L LP LK YL
Sbjct: 4 SLQHLCRLAIRRCLGKRRLDLIDKLPLPPRLKDYLLYK 41
>gnl|CDD|198037 smart00969, SOCS_box, The SOCS box acts as a bridge between
specific substrate- binding domains and more generic
proteins that comprise a large family of E3 ubiquitin
protein ligases.
Length = 34
Score = 46.6 bits (112), Expect = 2e-07
Identities = 17/36 (47%), Positives = 19/36 (52%), Gaps = 2/36 (5%)
Query: 345 FPLQHICRSVICSNISYDGISQLQLPKTLKSYLKEY 380
LQH+CR I S GI +L LP LK YL Y
Sbjct: 1 RSLQHLCRLAIRR--SLGGIDKLPLPPRLKDYLLYY 34
>gnl|CDD|239710 cd03741, SOCS_SOCS7, SOCS (suppressors of cytokine signaling) box
of SOCS7-like proteins. Together with CIS1, the CIS/SOCS
family of proteins is characterized by the presence of a
C-terminal SOCS box and a central SH2 domain. SOCS7 is
important in the functioning of neuronal cells. The
general function of the SOCS box is the recruitment of
the ubiquitin-transferase system. The SOCS box interacts
with Elongins B and C, Cullin-5 or Cullin-2, Rbx-1, and
E2. Therefore, SOCS-box-containing proteins probably
function as E3 ubiquitin ligases and mediate the
degradation of proteins associated through their
N-terminal regions.
Length = 49
Score = 46.6 bits (111), Expect = 2e-07
Identities = 18/36 (50%), Positives = 22/36 (61%)
Query: 347 LQHICRSVICSNISYDGISQLQLPKTLKSYLKEYHY 382
LQH+CR VI + D I L LP+ L YL+E HY
Sbjct: 6 LQHLCRFVIRKLVRRDHIPALPLPRRLIDYLREKHY 41
>gnl|CDD|219451 pfam07525, SOCS_box, SOCS box. The SOCS box acts as a bridge
between specific substrate- binding domains and more
generic proteins that comprise a large family of E3
ubiquitin protein ligases.
Length = 38
Score = 44.8 bits (107), Expect = 1e-06
Identities = 15/37 (40%), Positives = 19/37 (51%), Gaps = 3/37 (8%)
Query: 345 FPLQHICRSVICSNISYDG---ISQLQLPKTLKSYLK 378
LQH+CR I ++ D I +L LP LK YL
Sbjct: 2 RSLQHLCRLAIRRSLGRDRLHAIDKLPLPPRLKDYLL 38
>gnl|CDD|198195 cd09942, SH2_nSH2_p85_like, N-terminal Src homology 2 (nSH2) domain
found in p85. Phosphoinositide 3-kinases (PI3Ks) are
essential for cell growth, migration, and survival.
p110, the catalytic subunit, is composed of an
adaptor-binding domain, a Ras-binding domain, a C2
domain, a helical domain, and a kinase domain. The
regulatory unit is called p85 and is composed of an SH3
domain, a RhoGap domain, a N-terminal SH2 (nSH2) domain,
an internal SH2 (iSH2) domain, and C-terminal (cSH2)
domain. There are 2 inhibitory interactions between
p110alpha and p85 of P13K: (1) p85 nSH2 domain with the
C2, helical, and kinase domains of p110alpha and (2) p85
iSH2 domain with C2 domain of p110alpha. There are 3
inhibitory interactions between p110beta and p85 of
P13K: (1) p85 nSH2 domain with the C2, helical, and
kinase domains of p110beta, (2) p85 iSH2 domain with C2
domain of p110alpha, and (3) p85 cSH2 domain with the
kinase domain of p110alpha. It is interesting to note
that p110beta is oncogenic as a wild type protein while
p110alpha lacks this ability. One explanation is the
idea that the regulation of p110beta by p85 is unique
because of the addition of inhibitory contacts from the
cSH2 domain and the loss of contacts in the iSH2 domain.
In general SH2 domains are involved in signal
transduction. They typically bind pTyr-containing
ligands via two surface pockets, a pTyr and hydrophobic
binding pocket, allowing proteins with SH2 domains to
localize to tyrosine phosphorylated sites.
Length = 110
Score = 46.2 bits (110), Expect = 2e-06
Identities = 26/86 (30%), Positives = 48/86 (55%), Gaps = 4/86 (4%)
Query: 245 YWGKMDRYEAEKLLESWPEGTFLLRDSAQEEYLFSVSFRKFGRSLHARIEQWNHKFSFDS 304
YWG + R E + + P+GTFL+RD++ + ++++ RK G + +I + K+ F
Sbjct: 10 YWGDISREEVNEKMRDTPDGTFLVRDASTMKGDYTLTLRKGGNNKLIKIFHRDGKYGFS- 68
Query: 305 HDPNVYASPTVCGLIEHYKDPTLVMF 330
DP + S V LI +Y++ +L +
Sbjct: 69 -DPLTFNS--VVELINYYRNNSLAEY 91
>gnl|CDD|198218 cd10355, SH2_DAPP1_BAM32_like, Src homology 2 domain found in dual
adaptor for phosphotyrosine and 3-phosphoinositides (
DAPP1)/B lymphocyte adaptor molecule of 32 kDa
(Bam32)-like proteins. DAPP1/Bam32 contains a putative
myristoylation site at its N-terminus, followed by a SH2
domain, and a pleckstrin homology (PH) domain at its
C-terminus. DAPP1 could potentially be recruited to the
cell membrane by any of these domains. Its putative
myristoylation site could facilitate the interaction of
DAPP1 with the lipid bilayer. Its SH2 domain may also
interact with phosphotyrosine residues on
membrane-associated proteins such as activated tyrosine
kinase receptors. And finally its PH domain exhibits a
high-affinity interaction with the PtdIns(3,4,5)P(3)
PtdIns(3,4)P(2) second messengers produced at the cell
membrane following the activation of PI 3-kinases. DAPP1
is thought to interact with both tyrosine phosphorylated
proteins and 3-phosphoinositides and therefore may play
a role in regulating the location and/or activity of
such proteins(s) in response to agonists that elevate
PtdIns(3,4,5)P(3) and PtdIns(3,4)P(2). This protein is
likely to play an important role in triggering signal
transduction pathways that lie downstream from receptor
tyrosine kinases and PI 3-kinase. It is likely that
DAPP1 functions as an adaptor to recruit other proteins
to the plasma membrane in response to extracellular
signals. In general SH2 domains are involved in signal
transduction. They typically bind pTyr-containing
ligands via two surface pockets, a pTyr and hydrophobic
binding pocket, allowing proteins with SH2 domains to
localize to tyrosine phosphorylated sites.
Length = 92
Score = 43.6 bits (103), Expect = 8e-06
Identities = 26/91 (28%), Positives = 46/91 (50%), Gaps = 6/91 (6%)
Query: 239 ITSCSFYWGKMDRYEAEKLLES-WPEGTFLLRDSAQEEYLFSVSFRKFGRSLHARIEQWN 297
+ S +Y G + R+ AE LL S +G++LLR+S + LFS+S R H +E
Sbjct: 3 LQSLGWYHGNLTRHAAEALLLSNGVDGSYLLRNSNEGTGLFSLSVRAKDSVKHFHVEYTG 62
Query: 298 HKFSFDSHDPNVYASPTVCGLIEHYKDPTLV 328
+ F F N + ++ ++H+ + L+
Sbjct: 63 YSFKF---GFNEF--SSLQDFVKHFANQPLI 88
>gnl|CDD|199829 cd10341, SH2_N-SH2_PLC_gamma_like, N-terminal Src homology 2
(N-SH2) domain in Phospholipase C gamma. Phospholipase
C gamma is a signaling molecule that is recruited to the
C-terminal tail of the receptor upon autophosphorylation
of a highly conserved tyrosine. PLCgamma is composed of
a Pleckstrin homology (PH) domain followed by an
elongation factor (EF) domain, 2 catalytic regions of
PLC domains that flank 2 tandem SH2 domains (N-SH2,
C-SH2), and ending with a SH3 domain and C2 domain.
N-SH2 SH2 domain-mediated interactions represent a
crucial step in transmembrane signaling by receptor
tyrosine kinases. SH2 domains recognize phosphotyrosine
(pY) in the context of particular sequence motifs in
receptor phosphorylation sites. Both N-SH2 and C-SH2
have a very similar binding affinity to pY. But in
growth factor stimulated cells these domains bind to
different target proteins. N-SH2 binds to pY containing
sites in the C-terminal tails of tyrosine kinases and
other receptors. Recently it has been shown that this
interaction is mediated by phosphorylation-independent
interactions between a secondary binding site found
exclusively on the N-SH2 domain and a region of the
FGFR1 tyrosine kinase domain. This secondary site on the
SH2 cooperates with the canonical pY site to regulate
selectivity in mediating a specific cellular process.
C-SH2 binds to an intramolecular site on PLCgamma itself
which allows it to hydrolyze
phosphatidylinositol-4,5-bisphosphate into
diacylglycerol and inositol triphosphate. These then
activate protein kinase C and release calcium. In
general SH2 domains are involved in signal transduction.
They typically bind pTyr-containing ligands via two
surface pockets, a pTyr and hydrophobic binding pocket,
allowing proteins with SH2 domains to localize to
tyrosine phosphorylated sites.
Length = 99
Score = 43.5 bits (103), Expect = 9e-06
Identities = 28/90 (31%), Positives = 46/90 (51%), Gaps = 13/90 (14%)
Query: 247 GKM--DRYEAEKLLESW---PEGTFLLRDSAQEEYLFSVSFRKFGRSLHARI----EQWN 297
GK+ R EAEKLL + +GTFL+R+S +++SF + G+ H RI E
Sbjct: 9 GKLGDGRDEAEKLLLEYCEGGDGTFLVRESETFVGDYTLSFWRNGKVQHCRIRSRQENGE 68
Query: 298 HKFSFDSHDPNVYASPTVCGLIEHYKDPTL 327
K+ + V+ ++ LI++Y+ L
Sbjct: 69 KKYYLTDN--LVF--DSLYELIDYYRQNPL 94
>gnl|CDD|198189 cd09935, SH2_ABL, Src homology 2 (SH2) domain found in Abelson
murine lymphosarcoma virus (ABL) proteins. ABL-family
proteins are highly conserved tyrosine kinases. Each ABL
protein contains an SH3-SH2-TK (Src homology 3-Src
homology 2-tyrosine kinase) domain cassette, which
confers autoregulated kinase activity and is common
among nonreceptor tyrosine kinases. Several types of
posttranslational modifications control ABL catalytic
activity, subcellular localization, and stability, with
consequences for both cytoplasmic and nuclear ABL
functions. Binding partners provide additional
regulation of ABL catalytic activity, substrate
specificity, and downstream signaling. By combining this
cassette with actin-binding and -bundling domain, ABL
proteins are capable of connecting phosphoregulation
with actin-filament reorganization. Vertebrate paralogs,
ABL1 and ABL2, have evolved to perform specialized
functions. ABL1 includes nuclear localization signals
and a DNA binding domain which is used to mediate DNA
damage-repair functions, while ABL2 has additional
binding capacity for actin and for microtubules to
enhance its cytoskeletal remodeling functions. SH2 is
involved in several autoinhibitory mechanism that
constrain the enzymatic activity of the ABL-family
kinases. In one mechanism SH2 and SH3 cradle the kinase
domain while a cap sequence stabilizes the inactive
conformation resulting in a locked inactive state.
Another involves phosphatidylinositol 4,5-bisphosphate
(PIP2) which binds the SH2 domain through residues
normally required for phosphotyrosine binding in the
linker segment between the SH2 and kinase domains. The
SH2 domain contributes to ABL catalytic activity and
target site specificity. It is thought that the ABL
catalytic site and SH2 pocket have coevolved to
recognize the same sequences. Recent work now supports a
hierarchical processivity model in which the substrate
target site most compatible with ABL kinase domain
preferences is phosphorylated with greatest efficiency.
If this site is compatible with the ABL SH2 domain
specificity, it will then reposition and dock in the SH2
pocket. This mechanism also explains how ABL kinases
phosphorylates poor targets on the same substrate if
they are properly positioned and how relatively poor
substrate proteins might be recruited to ABL through a
complex with strong substrates that can also dock with
the SH2 pocket. In general SH2 domains are involved in
signal transduction. They typically bind pTyr-containing
ligands via two surface pockets, a pTyr and hydrophobic
binding pocket, allowing proteins with SH2 domains to
localize to tyrosine phosphorylated sites.
Length = 94
Score = 43.1 bits (102), Expect = 1e-05
Identities = 27/89 (30%), Positives = 39/89 (43%), Gaps = 21/89 (23%)
Query: 243 SFYWGKMDRYEAEKLLESWPEGTFLLRDSAQEEYLFSVSFRKFGRSLHARIEQ------- 295
S+Y G + R AE LL S G+FL+R+S +S+S R GR H RI +
Sbjct: 4 SWYHGPISRNAAEYLLSSGINGSFLVRESESSPGQYSISLRYDGRVYHYRISEDSDGKVY 63
Query: 296 --WNHKFSFDSHDPNVYASPTVCGLIEHY 322
H+F T+ L+ H+
Sbjct: 64 VTQEHRF------------NTLAELVHHH 80
>gnl|CDD|198215 cd10352, SH2_a2chimerin_b2chimerin, Src homology 2 (SH2) domain
found in alpha2-chimerin and beta2-chimerin proteins.
Chimerins are a family of phorbol ester- and
diacylglycerol-responsive GTPase-activating proteins.
Alpha1-chimerin (formerly known as n-chimerin) and
alpha2-chimerin are alternatively spliced products of a
single gene, as are beta1- and beta2-chimerin. alpha1-
and beta1-chimerin have a relatively short N-terminal
region that does not encode any recognizable domains,
whereas alpha2- and beta2-chimerin both include a
functional SH2 domain that can bind to phosphotyrosine
motifs within receptors. All of the isoforms contain a
GAP domain with specificity in vitro for Rac1 and a
diacylglycerol (DAG)-binding C1 domain which allows them
to translocate to membranes in response to DAG signaling
and anchors them in close proximity to activated Rac.
Other C1 domain-containing diacylglycerol receptors
including: PKC, Munc-13 proteins, phorbol ester binding
scaffolding proteins involved in Ca2+-stimulated
exocytosis, and RasGRPs, diacylglycerol-activated
guanine-nucleotide exchange factors (GEFs) for Ras and
Rap1. In general SH2 domains are involved in signal
transduction. They typically bind pTyr-containing
ligands via two surface pockets, a pTyr and hydrophobic
binding pocket, allowing proteins with SH2 domains to
localize to tyrosine phosphorylated sites.
Length = 91
Score = 43.1 bits (102), Expect = 1e-05
Identities = 15/49 (30%), Positives = 33/49 (67%)
Query: 245 YWGKMDRYEAEKLLESWPEGTFLLRDSAQEEYLFSVSFRKFGRSLHARI 293
Y G + R EAE+LL +G++L+R+S++++ +++S R G+ + ++
Sbjct: 9 YHGLISREEAEQLLSGASDGSYLIRESSRDDGYYTLSLRFNGKVKNYKL 57
>gnl|CDD|198190 cd09937, SH2_csk_like, Src homology 2 (SH2) domain found in
Carboxyl-Terminal Src Kinase (Csk). Both the C-terminal
Src kinase (CSK) and CSK-homologous kinase (CHK) are
members of the CSK-family of protein tyrosine kinases.
These proteins suppress activity of Src-family kinases
(SFK) by selectively phosphorylating the conserved
C-terminal tail regulatory tyrosine by a similar
mechanism. CHK is also capable of inhibiting SFKs by a
non-catalytic mechanism that involves binding of CHK to
SFKs to form stable protein complexes. The
unphosphorylated form of SFKs is inhibited by CSK and
CHK by a two-step mechanism. The first step involves the
formation of a complex of SFKs with CSK/CHK with the
SFKs in the complex are inactive. The second step,
involves the phosphorylation of the C-terminal tail
tyrosine of SFKs, which then dissociates and adopt an
inactive conformation. The structural basis of how the
phosphorylated SFKs dissociate from CSK/CHK to adopt the
inactive conformation is not known. The inactive
conformation of SFKs is stabilized by two intramolecular
inhibitory interactions: (a) the pYT:SH2 interaction in
which the phosphorylated C-terminal tail tyrosine (YT)
binds to the SH2 domain, and (b) the linker:SH3
interaction of which the SH2-kinase domain linker binds
to the SH3 domain. SFKs are activated by multiple
mechanisms including binding of the ligands to the SH2
and SH3 domains to displace the two inhibitory
intramolecular interactions, autophosphorylation, and
dephosphorylation of YT. By selective phosphorylation
and the non-catalytic inhibitory mechanism CSK and CHK
are able to inhibit the active forms of SFKs. CSK and
CHK are regulated by phosphorylation and inter-domain
interactions. They both contain SH3, SH2, and kinase
domains separated by the SH3-SH2 connector and SH2
kinase linker, intervening segments separating the three
domains. They lack a conserved tyrosine phosphorylation
site in the kinase domain and the C-terminal tail
regulatory tyrosine phosphorylation site. The CSK SH2
domain is crucial for stabilizing the kinase domain in
the active conformation. A disulfide bond here regulates
CSK kinase activity. The subcellular localization and
activity of CSK are regulated by its SH2 domain. In
general SH2 domains are involved in signal transduction.
They typically bind pTyr-containing ligands via two
surface pockets, a pTyr and hydrophobic binding pocket,
allowing proteins with SH2 domains to localize to
tyrosine phosphorylated sites.
Length = 98
Score = 42.7 bits (101), Expect = 2e-05
Identities = 28/79 (35%), Positives = 40/79 (50%), Gaps = 8/79 (10%)
Query: 247 GKMDRYEAEKLLESWPEGTFLLRDSAQE--EYLFSVSFRKFGRSLHARIEQWNHKFSFDS 304
GK+ R EAE+LL+ +G FL+R+S +Y VSF G+ H R+ N K + D
Sbjct: 8 GKISREEAERLLQPPEDGLFLVRESTNYPGDYTLCVSFE--GKVEHYRVIYRNGKLTIDE 65
Query: 305 HDPNVYASPTVCGLIEHYK 323
Y + L+EHY
Sbjct: 66 ---EEYF-ENLIQLVEHYT 80
>gnl|CDD|239709 cd03740, SOCS_SOCS6, SOCS (suppressors of cytokine signaling) box
of SOCS6-like proteins. Together with CIS1, the CIS/SOCS
family of proteins is characterized by the presence of a
C-terminal SOCS box and a central SH2 domain. The
general function of the SOCS box is the recruitment of
the ubiquitin-transferase system. The SOCS box interacts
with Elongins B and C, Cullin-5 or Cullin-2, Rbx-1, and
E2. Therefore, SOCS-box-containing proteins probably
function as E3 ubiquitin ligases and mediate the
degradation of proteins associated through their
N-terminal regions.
Length = 41
Score = 40.9 bits (96), Expect = 2e-05
Identities = 17/36 (47%), Positives = 21/36 (58%)
Query: 347 LQHICRSVICSNISYDGISQLQLPKTLKSYLKEYHY 382
LQ++CR VI D I +L LP +K YL E HY
Sbjct: 6 LQYLCRFVIRQYTRIDLIQKLPLPNKMKGYLLEKHY 41
>gnl|CDD|198210 cd10347, SH2_Nterm_shark_like, N-terminal Src homology 2 (SH2)
domain found in SH2 domains, ANK, and kinase domain
(shark) proteins. These non-receptor protein-tyrosine
kinases contain two SH2 domains, five ankyrin (ANK)-like
repeats, and a potential tyrosine phosphorylation site
in the carboxyl-terminal tail which resembles the
phosphorylation site in members of the src family. Like,
mammalian non-receptor protein-tyrosine kinases, ZAP-70
and syk proteins, they do not have SH3 domains. However,
the presence of ANK makes these unique among
protein-tyrosine kinases. Both tyrosine kinases and ANK
repeats have been shown to transduce developmental
signals, and SH2 domains are known to participate
intimately in tyrosine kinase signaling. These tyrosine
kinases are believed to be involved in epithelial cell
polarity. The members of this family include the shark
(SH2 domains, ANK, and kinase domain) gene in Drosophila
and yellow fever mosquitos, as well as the hydra protein
HTK16. Drosophila Shark is proposed to transduce
intracellularly the Crumbs, a protein necessary for
proper organization of ectodermal epithelia,
intercellular signal. In general SH2 domains are
involved in signal transduction. They typically bind
pTyr-containing ligands via two surface pockets, a pTyr
and hydrophobic binding pocket, allowing proteins with
SH2 domains to localize to tyrosine phosphorylated
sites.
Length = 81
Score = 42.0 bits (99), Expect = 2e-05
Identities = 30/87 (34%), Positives = 41/87 (47%), Gaps = 14/87 (16%)
Query: 243 SFYWGKMDRYEAEKLL--ESWPEGTFLLRDS--AQEEYLFSVSFRKFGRSLHARIEQWNH 298
+Y GK+ R AE LL E +G FL+R+S A +Y+ S+ + G LH +I H
Sbjct: 2 RWYHGKISREVAEALLLREGGRDGLFLVRESTSAPGDYVLSLLAQ--GEVLHYQIR--RH 57
Query: 299 ---KFSFDSHDPNVYASPTVCGLIEHY 322
F D + T LIEHY
Sbjct: 58 GEDAFFSDDGPLIFHGLDT---LIEHY 81
>gnl|CDD|198233 cd10370, SH2_Src_Src42, Src homology 2 (SH2) domain found in the
Src oncogene at 42A (Src42). Src42 is a member of the
Src non-receptor type tyrosine kinase family of
proteins. The integration of receptor tyrosine
kinase-induced RAS and Src42 signals by Connector
eNhancer of KSR (CNK) as a two-component input is
essential for RAF activation in Drosophila. Src42 is
present in a wide variety of organisms including:
California sea hare, pea aphid, yellow fever mosquito,
honey bee, Panamanian leafcutter ant, and sea urchin.
Src42 has a unique N-terminal domain, an SH3 domain, an
SH2 domain, a kinase domain and a regulatory tail, as do
the other members of the family. Like the other members
of the Src family the SH2 domain in addition to binding
the target, also plays an autoinhibitory role by binding
to its C-terminal tail. In general SH2 domains are
involved in signal transduction. They typically bind
pTyr-containing ligands via two surface pockets, a pTyr
and hydrophobic binding pocket, allowing proteins with
SH2 domains to localize to tyrosine phosphorylated
sites.
Length = 96
Score = 42.1 bits (99), Expect = 4e-05
Identities = 29/81 (35%), Positives = 39/81 (48%), Gaps = 5/81 (6%)
Query: 244 FYWGKMDRYEAEK--LLESWPEGTFLLRDSAQEEYLFSVSFRKFGRSLHARIEQWNHKFS 301
+Y+GK+ R EAEK LL G FL+RDS +S+S R H RI Q +
Sbjct: 5 WYFGKIKRIEAEKKLLLPENEHGAFLIRDSESRHNDYSLSVRDGDTVKHYRIRQLDEGGF 64
Query: 302 FDSHDPNVYASPTVCGLIEHY 322
F + T+ L+EHY
Sbjct: 65 FIARRTTF---RTLQELVEHY 82
>gnl|CDD|199828 cd09941, SH2_Grb2_like, Src homology 2 domain found in Growth
factor receptor-bound protein 2 (Grb2) and similar
proteins. The adaptor proteins here include homologs
Grb2 in humans, Sex muscle abnormal protein 5 (Sem-5) in
Caenorhabditis elegans, and Downstream of receptor
kinase (drk) in Drosophila melanogaster. They are
composed of one SH2 and two SH3 domains. Grb2/Sem-5/drk
regulates the Ras pathway by linking the tyrosine
kinases to the Ras guanine nucleotide releasing protein
Sos, which converts Ras to the active GTP-bound state.
The SH2 domain of Grb2/Sem-5/drk binds class II
phosphotyrosyl peptides while its SH3 domain binds to
Sos and Sos-derived, proline-rich peptides. Besides it
function in Ras signaling, Grb2 is also thought to play
a role in apoptosis. Unlike most SH2 structures in which
the peptide binds in an extended conformation (such that
the +3 peptide residue occupies a hydrophobic pocket in
the protein, conferring a modest degree of selectivity),
Grb2 forms several hydrogen bonds via main chain atoms
with the side chain of +2 Asn. In general SH2 domains
are involved in signal transduction. They typically bind
pTyr-containing ligands via two surface pockets, a pTyr
and hydrophobic binding pocket, allowing proteins with
SH2 domains to localize to tyrosine phosphorylated
sites.
Length = 95
Score = 41.5 bits (98), Expect = 5e-05
Identities = 16/43 (37%), Positives = 26/43 (60%), Gaps = 1/43 (2%)
Query: 242 CSFYWGKMDRYEAEKLL-ESWPEGTFLLRDSAQEEYLFSVSFR 283
++ GK+ R EAE++L P+G FL+R+S FS+S +
Sbjct: 3 HPWFHGKISRAEAEEILMNQRPDGAFLIRESESSPGDFSLSVK 45
>gnl|CDD|198219 cd10356, SH2_ShkA_ShkC, Src homology 2 (SH2) domain found in SH2
domain-bearing protein kinases A and C (ShkA and ShkC).
SH2-bearing genes cloned from Dictyostelium include two
transcription factors, STATa and STATc, and a signaling
factor, SHK1 (shkA). A database search of the
Dictyostelium discoideum genome revealed two additional
putative STAT sequences, dd-STATb and dd-STATd, and four
additional putative SHK genes, dd-SHK2 (shkB), dd-SHK3
(shkC), dd-SHK4 (shkD), and dd-SHK5 (shkE). This model
contains members of shkA and shkC. All of the SHK
members are most closely related to the protein kinases
found in plants. However these kinases in plants are
not conjugated to any SH2 or SH2-like sequences.
Alignment data indicates that the SHK SH2 domains carry
some features of the STAT SH2 domains in Dictyostelium.
When STATc's linker domain was used for a BLAST search,
the sequence between the protein kinase domain and the
SH2 domain (the linker) of SHK was recovered, suggesting
a close relationship among these molecules within this
region. SHK's linker domain is predicted to contain an
alpha-helix which is indeed homologous to that of STAT.
Based on the phylogenetic alignment, SH2 domains can be
grouped into two categories, STAT-type and Src-type. SHK
family members are in between, but are closer to the
STAT-type which indicates a close relationship between
SHK and STAT families in their SH2 domains and further
supports the notion that SHKs linker-SH2 domain evolved
from STAT or STATL (STAT-like Linker-SH2) domain found
in plants. In SHK, STAT, and SPT6, the linker-SH2
domains all reside exclusively in the C-terminal
regions. In general SH2 domains are involved in signal
transduction. They typically bind pTyr-containing
ligands via two surface pockets, a pTyr and hydrophobic
binding pocket, allowing proteins with SH2 domains to
localize to tyrosine phosphorylated sites.
Length = 113
Score = 41.8 bits (98), Expect = 5e-05
Identities = 22/70 (31%), Positives = 38/70 (54%), Gaps = 1/70 (1%)
Query: 236 LKDITSCSFYWGKMDRYEAEKLLESWPEGTFLLRDSAQEEYLFSVS-FRKFGRSLHARIE 294
++++ C+++ G + E+E L PEGTFL+R S E +++S K G H RI
Sbjct: 4 IRELMECAWFHGDISTSESENRLNGKPEGTFLVRFSTSEPGAYTISKVSKNGGISHQRIH 63
Query: 295 QWNHKFSFDS 304
+ KF ++
Sbjct: 64 RPGGKFQVNN 73
>gnl|CDD|198272 cd10409, SH2_Nck2, Src homology 2 (SH2) domain found in Nck. Nck
proteins are adaptors that modulate actin cytoskeleton
dynamics by linking proline-rich effector molecules to
tyrosine kinases or phosphorylated signaling
intermediates. There are two members known in this
family: Nck1 (Nckalpha) and Nck2 (Nckbeta and Growth
factor receptor-bound protein 4 (Grb4)). They are
characterized by having 3 SH3 domains and a C-terminal
SH2 domain. Nck1 and Nck2 have overlapping functions as
determined by gene knockouts. Both bind receptor
tyrosine kinases and other tyrosine-phosphorylated
proteins through their SH2 domains. In addition they
also bind distinct targets. Neuronal signaling
proteins: EphrinB1, EphrinB2, and Disabled-1 (Dab-1) all
bind to Nck-2 exclusively. And in the case of PDGFR,
Tyr(P)751 binds to Nck1 while Tyr(P)1009 binds to Nck2.
Nck1 and Nck2 have a role in the infection process of
enteropathogenic Escherichia coli (EPEC). Their SH3
domains are involved in recruiting and activating the
N-WASP/Arp2/3 complex inducing actin polymerization
resulting in the production of pedestals, dynamic
bacteria-presenting protrusions of the plasma membrane.
A similar thing occurs in the vaccinia virus where
motile plasma membrane projections are formed beneath
the virus. Recently it has been shown that the SH2
domains of both Nck1 and Nck2 bind the G-protein coupled
receptor kinase-interacting protein 1 (GIT1) in a
phosphorylation-dependent manner. In general SH2 domains
are involved in signal transduction. They typically bind
pTyr-containing ligands via two surface pockets, a pTyr
and hydrophobic binding pocket, allowing proteins with
SH2 domains to localize to tyrosine phosphorylated
sites.
Length = 98
Score = 41.2 bits (96), Expect = 8e-05
Identities = 26/81 (32%), Positives = 44/81 (54%), Gaps = 6/81 (7%)
Query: 244 FYWGKMDRYEAE-KLLESWPEGTFLLRDSAQEEYLFSVSFRKFGRSLHARIEQWNHKFSF 302
+Y+G + R++AE L E EG FL+RDS FSVS + G++ H +++ ++ +
Sbjct: 3 WYYGNVTRHQAECALNERGVEGDFLIRDSESSPSDFSVSLKAVGKNKHFKVQLVDNVYCI 62
Query: 303 DSHDPNVYASPTVCGLIEHYK 323
N ++ L+EHYK
Sbjct: 63 GQRRFN-----SMDELVEHYK 78
>gnl|CDD|198198 cd09945, SH2_SHB_SHD_SHE_SHF_like, Src homology 2 domain found in
SH2 domain-containing adapter proteins B, D, E, and F
(SHB, SHD, SHE, SHF). SHB, SHD, SHE, and SHF are SH2
domain-containing proteins that play various roles
throughout the cell. SHB functions in generating
signaling compounds in response to tyrosine kinase
activation. SHB contains proline-rich motifs, a
phosphotyrosine binding (PTB) domain, tyrosine
phosphorylation sites, and a SH2 domain. SHB mediates
certain aspects of platelet-derived growth factor (PDGF)
receptor-, fibroblast growth factor (FGF) receptor-,
neural growth factor (NGF) receptor TRKA-, T cell
receptor-, interleukin-2 (IL-2) receptor- and focal
adhesion kinase- (FAK) signaling. SRC-like FYN-Related
Kinase FRK/RAK (also named BSK/IYK or GTK) and SHB
regulate apoptosis, proliferation and differentiation.
SHB promotes apoptosis and is also required for proper
mitogenicity, spreading and tubular morphogenesis in
endothelial cells. SHB also plays a role in preventing
early cavitation of embryoid bodies and reduces
differentiation to cells expressing albumin, amylase,
insulin and glucagon. SHB is a multifunctional protein
that has difference responses in different cells under
various conditions. SHE is expressed in heart, lung,
brain, and skeletal muscle, while expression of SHD is
restricted to the brain. SHF is mainly expressed in
skeletal muscle, brain, liver, prostate, testis, ovary,
small intestine, and colon. SHD may be a physiological
substrate of c-Abl and may function as an adapter
protein in the central nervous system. It is also
thought to be involved in apoptotic regulation. SHD
contains five YXXP motifs, a substrate sequence
preferred by Abl tyrosine kinases, in addition to a
poly-proline rich region and a C-terminal SH2 domain.
SHE contains two pTry protein binding domains, protein
interaction domain (PID) and a SH2 domain, followed by a
glycine-proline rich region, all of which are N-terminal
to the phosphotyrosine binding (PTB) domain. SHF
contains four putative tyrosine phosphorylation sites
and an SH2 domain. In general SH2 domains are involved
in signal transduction. They typically bind
pTyr-containing ligands via two surface pockets, a pTyr
and hydrophobic binding pocket, allowing proteins with
SH2 domains to localize to tyrosine phosphorylated
sites.
Length = 98
Score = 40.5 bits (95), Expect = 1e-04
Identities = 22/80 (27%), Positives = 39/80 (48%), Gaps = 4/80 (5%)
Query: 244 FYWGKMDRYEAEKLLESWPEGTFLLRDSAQEEYLFSVSFRKFGRSLHARIEQW-NHKFSF 302
+Y G + R EAE LL EG++L+R+S + +S+S + +H RI++ ++
Sbjct: 3 WYHGAITRIEAESLLRPCKEGSYLVRNSESTKQDYSLSLKSAKGFMHMRIQRNETGQYIL 62
Query: 303 DSHDPNVYASPTVCGLIEHY 322
T+ +I HY
Sbjct: 63 GQFSRPF---ETIPEMIRHY 79
>gnl|CDD|198271 cd10408, SH2_Nck1, Src homology 2 (SH2) domain found in Nck. Nck
proteins are adaptors that modulate actin cytoskeleton
dynamics by linking proline-rich effector molecules to
tyrosine kinases or phosphorylated signaling
intermediates. There are two members known in this
family: Nck1 (Nckalpha) and Nck2 (Nckbeta and Growth
factor receptor-bound protein 4 (Grb4)). They are
characterized by having 3 SH3 domains and a C-terminal
SH2 domain. Nck1 and Nck2 have overlapping functions as
determined by gene knockouts. Both bind receptor
tyrosine kinases and other tyrosine-phosphorylated
proteins through their SH2 domains. In addition they
also bind distinct targets. Neuronal signaling
proteins: EphrinB1, EphrinB2, and Disabled-1 (Dab-1) all
bind to Nck-2 exclusively. And in the case of PDGFR,
Tyr(P)751 binds to Nck1 while Tyr(P)1009 binds to Nck2.
Nck1 and Nck2 have a role in the infection process of
enteropathogenic Escherichia coli (EPEC). Their SH3
domains are involved in recruiting and activating the
N-WASP/Arp2/3 complex inducing actin polymerization
resulting in the production of pedestals, dynamic
bacteria-presenting protrusions of the plasma membrane.
A similar thing occurs in the vaccinia virus where
motile plasma membrane projections are formed beneath
the virus. Recently it has been shown that the SH2
domains of both Nck1 and Nck2 bind the G-protein coupled
receptor kinase-interacting protein 1 (GIT1) in a
phosphorylation-dependent manner. In general SH2 domains
are involved in signal transduction. They typically bind
pTyr-containing ligands via two surface pockets, a pTyr
and hydrophobic binding pocket, allowing proteins with
SH2 domains to localize to tyrosine phosphorylated
sites.
Length = 97
Score = 40.4 bits (94), Expect = 1e-04
Identities = 26/81 (32%), Positives = 43/81 (53%), Gaps = 6/81 (7%)
Query: 244 FYWGKMDRYEAEKLL-ESWPEGTFLLRDSAQEEYLFSVSFRKFGRSLHARIEQWNHKFSF 302
+Y+GK+ R++AE L E EG FL+RDS FSVS + G++ H +++ +
Sbjct: 3 WYYGKVTRHQAEMALNERGNEGDFLIRDSESSPNDFSVSLKAQGKNKHFKVQLKECVYCI 62
Query: 303 DSHDPNVYASPTVCGLIEHYK 323
+ ++ L+EHYK
Sbjct: 63 GQRKFS-----SMEELVEHYK 78
>gnl|CDD|198196 cd09943, SH2_Nck_family, Src homology 2 (SH2) domain found in the
Nck family. Nck proteins are adaptors that modulate
actin cytoskeleton dynamics by linking proline-rich
effector molecules to tyrosine kinases or phosphorylated
signaling intermediates. There are two members known in
this family: Nck1 (Nckalpha) and Nck2 (Nckbeta and
Growth factor receptor-bound protein 4 (Grb4)). They
are characterized by having 3 SH3 domains and a
C-terminal SH2 domain. Nck1 and Nck2 have overlapping
functions as determined by gene knockouts. Both bind
receptor tyrosine kinases and other
tyrosine-phosphorylated proteins through their SH2
domains. In addition they also bind distinct targets.
Neuronal signaling proteins: EphrinB1, EphrinB2, and
Disabled-1 (Dab-1) all bind to Nck-2 exclusively. And in
the case of PDGFR, Tyr(P)751 binds to Nck1 while
Tyr(P)1009 binds to Nck2. Nck1 and Nck2 have a role in
the infection process of enteropathogenic Escherichia
coli (EPEC). Their SH3 domains are involved in
recruiting and activating the N-WASP/Arp2/3 complex
inducing actin polymerization resulting in the
production of pedestals, dynamic bacteria-presenting
protrusions of the plasma membrane. A similar thing
occurs in the vaccinia virus where motile plasma
membrane projections are formed beneath the virus.
Recently it has been shown that the SH2 domains of both
Nck1 and Nck2 bind the G-protein coupled receptor
kinase-interacting protein 1 (GIT1) in a
phosphorylation-dependent manner. In general SH2 domains
are involved in signal transduction. They typically bind
pTyr-containing ligands via two surface pockets, a pTyr
and hydrophobic binding pocket, allowing proteins with
SH2 domains to localize to tyrosine phosphorylated
sites.
Length = 93
Score = 39.8 bits (93), Expect = 2e-04
Identities = 21/53 (39%), Positives = 34/53 (64%), Gaps = 1/53 (1%)
Query: 243 SFYWGKMDRYEAEKLL-ESWPEGTFLLRDSAQEEYLFSVSFRKFGRSLHARIE 294
+Y+G++ R++AE LL E EG FL+RDS +SVS + GR+ H +++
Sbjct: 2 PWYYGRITRHQAETLLNEHGHEGDFLIRDSESNPGDYSVSLKAPGRNKHFKVQ 54
>gnl|CDD|198214 cd10351, SH2_SH2D4B, Src homology 2 domain found in the SH2 domain
containing protein 4B (SH2D4B). SH2D4B contains a
single SH2 domain. In general SH2 domains are involved
in signal transduction. They typically bind
pTyr-containing ligands via two surface pockets, a pTyr
and hydrophobic binding pocket, allowing proteins with
SH2 domains to localize to tyrosine phosphorylated
sites.
Length = 103
Score = 39.5 bits (92), Expect = 3e-04
Identities = 26/81 (32%), Positives = 47/81 (58%), Gaps = 3/81 (3%)
Query: 244 FYWGKMDRYEAEKLLESWPEGTFLLRDSAQEEYLFSVSFRKFGRSLHARIEQWNHKFSFD 303
++ G + R EAE LL + EG+FL+R S ++ + +++S+R H ++ +SF
Sbjct: 9 WFHGIISREEAEALLMNATEGSFLVRVS-EKIWGYTLSYRLQSGFKHFLVDASGDFYSFL 67
Query: 304 SHDPNVYASPTVCGLIEHYKD 324
DPN +A T+ LI+ +K+
Sbjct: 68 GVDPNRHA--TLTDLIDFHKE 86
>gnl|CDD|198186 cd09932, SH2_C-SH2_PLC_gamma_like, C-terminal Src homology 2
(C-SH2) domain in Phospholipase C gamma. Phospholipase
C gamma is a signaling molecule that is recruited to the
C-terminal tail of the receptor upon autophosphorylation
of a highly conserved tyrosine. PLCgamma is composed of
a Pleckstrin homology (PH) domain followed by an
elongation factor (EF) domain, 2 catalytic regions of
PLC domains that flank 2 tandem SH2 domains (N-SH2,
C-SH2), and ending with a SH3 domain and C2 domain.
N-SH2 SH2 domain-mediated interactions represent a
crucial step in transmembrane signaling by receptor
tyrosine kinases. SH2 domains recognize phosphotyrosine
(pY) in the context of particular sequence motifs in
receptor phosphorylation sites. Both N-SH2 and C-SH2
have a very similar binding affinity to pY. But in
growth factor stimulated cells these domains bind to
different target proteins. N-SH2 binds to pY containing
sites in the C-terminal tails of tyrosine kinases and
other receptors. Recently it has been shown that this
interaction is mediated by phosphorylation-independent
interactions between a secondary binding site found
exclusively on the N-SH2 domain and a region of the
FGFR1 tyrosine kinase domain. This secondary site on the
SH2 cooperates with the canonical pY site to regulate
selectivity in mediating a specific cellular process.
C-SH2 binds to an intramolecular site on PLCgamma itself
which allows it to hydrolyze
phosphatidylinositol-4,5-bisphosphate into
diacylglycerol and inositol triphosphate. These then
activate protein kinase C and release calcium. In
general SH2 domains are involved in signal transduction.
They typically bind pTyr-containing ligands via two
surface pockets, a pTyr and hydrophobic binding pocket,
allowing proteins with SH2 domains to localize to
tyrosine phosphorylated sites.
Length = 104
Score = 38.8 bits (91), Expect = 5e-04
Identities = 19/47 (40%), Positives = 28/47 (59%), Gaps = 1/47 (2%)
Query: 250 DRYEAEKLLESWPE-GTFLLRDSAQEEYLFSVSFRKFGRSLHARIEQ 295
R +AE++L P G FL+R S + F++SFR G+ H RI+Q
Sbjct: 12 TREQAEEMLMRVPRDGAFLVRPSETDPNSFAISFRAEGKIKHCRIKQ 58
>gnl|CDD|198180 cd09926, SH2_CRK_like, Src homology 2 domain found in
cancer-related signaling adaptor protein CRK. SH2
domain in the CRK proteins. CRKI (SH2-SH3) and CRKII
(SH2-SH3-SH3) are splicing isoforms of the oncoprotein
CRK. CRKs regulate transcription and cytoskeletal
reorganization for cell growth and motility by linking
tyrosine kinases to small G proteins. The SH2 domain of
CRK associates with tyrosine-phosphorylated receptors or
components of focal adhesions, such as p130Cas and
paxillin. CRK transmits signals to small G proteins
through effectors that bind its SH3 domain, such as C3G,
the guanine-nucleotide exchange factor (GEF) for Rap1
and R-Ras, and DOCK180, the GEF for Rac6. The binding of
p130Cas to the CRK-C3G complex activates Rap1, leading
to regulation of cell adhesion, and activates R-Ras,
leading to JNK-mediated activation of cell
proliferation, whereas the binding of CRK DOCK180
induces Rac1-mediated activation of cellular migration.
The activity of the different splicing isoforms varies
greatly with CRKI displaying substantial transforming
activity, CRKII less so, and phosphorylated CRKII with
no biological activity whatsoever. CRKII has a linker
region with a phosphorylated Tyr and an additional
C-terminal SH3 domain. The phosphorylated Tyr creates a
binding site for its SH2 domain which disrupts the
association between CRK and its SH2 target proteins. In
general SH2 domains are involved in signal transduction.
They typically bind pTyr-containing ligands via two
surface pockets, a pTyr and hydrophobic binding pocket,
allowing proteins with SH2 domains to localize to
tyrosine phosphorylated sites.
Length = 106
Score = 37.8 bits (88), Expect = 0.001
Identities = 19/41 (46%), Positives = 28/41 (68%), Gaps = 2/41 (4%)
Query: 243 SFYWGKMDRYEAEKLLESWPEGTFLLRDSAQ--EEYLFSVS 281
S+Y+G M R EA++LL+ G FL+RDS+ +Y+ SVS
Sbjct: 8 SWYFGPMSRQEAQELLQGQRHGVFLVRDSSTIPGDYVLSVS 48
>gnl|CDD|198184 cd09930, SH2_cSH2_p85_like, C-terminal Src homology 2 (cSH2) domain
found in p85. Phosphoinositide 3-kinases (PI3Ks) are
essential for cell growth, migration, and survival.
p110, the catalytic subunit, is composed of an
adaptor-binding domain, a Ras-binding domain, a C2
domain, a helical domain, and a kinase domain. The
regulatory unit is called p85 and is composed of an SH3
domain, a RhoGap domain, a N-terminal SH2 (nSH2) domain,
a inter SH2 (iSH2) domain, and C-terminal (cSH2) domain.
There are 2 inhibitory interactions between p110alpha
and p85 of P13K: 1) p85 nSH2 domain with the C2,
helical, and kinase domains of p110alpha and 2) p85 iSH2
domain with C2 domain of p110alpha. There are 3
inhibitory interactions between p110beta and p85 of
P13K: 1) p85 nSH2 domain with the C2, helical, and
kinase domains of p110beta, 2) p85 iSH2 domain with C2
domain of p110alpha, and 3) p85 cSH2 domain with the
kinase domain of p110alpha. It is interesting to note
that p110beta is oncogenic as a wild type protein while
p110alpha lacks this ability. One explanation is the
idea that the regulation of p110beta by p85 is unique
because of the addition of inhibitory contacts from the
cSH2 domain and the loss of contacts in the iSH2 domain.
In general SH2 domains are involved in signal
transduction. They typically bind pTyr-containing
ligands via two surface pockets, a pTyr and hydrophobic
binding pocket, allowing proteins with SH2 domains to
localize to tyrosine phosphorylated sites.
Length = 104
Score = 37.4 bits (87), Expect = 0.002
Identities = 29/89 (32%), Positives = 45/89 (50%), Gaps = 8/89 (8%)
Query: 242 CSFYWGKMDRYEAEKLLESWPEGTFLLRD-SAQEEYLFSVSFRKFGRSLHARIEQWNHKF 300
++ G ++R +AE+LL P+GTFL+R+ S Q Y SV G H I + +
Sbjct: 6 RTWLVGDINRTQAEELLRGKPDGTFLIRESSTQGCYACSVVCN--GEVKHCVIYKTETGY 63
Query: 301 SFDSHDP-NVYASPTVCGLIEHYKDPTLV 328
F +P N+Y S + L+ HY +L
Sbjct: 64 GF--AEPYNLYES--LKELVLHYAHNSLE 88
>gnl|CDD|239705 cd03736, SOCS_SOCS2, SOCS (suppressors of cytokine signaling) box
of SOCS2-like proteins. Together with CIS1, the CIS/SOCS
family of proteins is characterized by the presence of a
C-terminal SOCS box and a central SH2 domain. SOCS2 has
recently been shown to regulate neuronal differentiation
by controlling expression of a neurogenic transcription
factor, Neurogenin-1. SOCS2 binds to GH receptors and
inhibits the activation of STAT5b induced by GH. The
general function of the SOCS box is the recruitment of
the ubiquitin-transferase system. The SOCS box interacts
with Elongins B and C, Cullin-5 or Cullin-2, Rbx-1, and
E2. Therefore, SOCS-box-containing proteins probably
function as E3 ubiquitin ligases and mediate the
degradation of proteins associated through their
N-terminal regions.
Length = 41
Score = 35.6 bits (82), Expect = 0.002
Identities = 18/36 (50%), Positives = 20/36 (55%), Gaps = 2/36 (5%)
Query: 347 LQHICRSVICSNISYDGISQLQLPKTLKSYLKEYHY 382
LQH+CR I N I +L LP LK YL EY Y
Sbjct: 6 LQHLCRITI--NKCTRQIQELPLPTRLKDYLTEYTY 39
>gnl|CDD|198203 cd10340, SH2_N-SH2_SHP_like, N-terminal Src homology 2 (N-SH2)
domain found in SH2 domain Phosphatases (SHP) proteins.
The SH2 domain phosphatases (SHP-1, SHP-2/Syp,
Drosophila corkscrew (csw), and Caenorhabditis elegans
Protein Tyrosine Phosphatase (Ptp-2)) are cytoplasmic
signaling enzymes. They are both targeted and regulated
by interactions of their SH2 domains with
phosphotyrosine docking sites. These proteins contain
two SH2 domains (N-SH2, C-SH2) followed by a tyrosine
phosphatase (PTP) domain, and a C-terminal extension.
Shp1 and Shp2 have two tyrosyl phosphorylation sites in
their C-tails, which are phosphorylated differentially
by receptor and nonreceptor PTKs. Csw retains the
proximal tyrosine and Ptp-2 lacks both sites.
Shp-binding proteins include receptors, scaffolding
adapters, and inhibitory receptors. Some of these bind
both Shp1 and Shp2 while others bind only one. Most
proteins that bind a Shp SH2 domain contain one or more
immuno-receptor tyrosine-based inhibitory motifs
(ITIMs): [IVL]xpYxx[IVL]. Shp1 N-SH2 domain blocks the
catalytic domain and keeps the enzyme in the inactive
conformation, and is thus believed to regulate the
phosphatase activity of SHP-1. Its C-SH2 domain is
thought to be involved in searching for phosphotyrosine
activators. The SHP2 N-SH2 domain is a conformational
switch; it either binds and inhibits the phosphatase, or
it binds phosphoproteins and activates the enzyme. The
C-SH2 domain contributes binding energy and specificity,
but it does not have a direct role in activation. Csw
SH2 domain function is essential, but either SH2 domain
can fulfill this requirement. The role of the csw SH2
domains during Sevenless receptor tyrosine kinase (SEV)
signaling is to bind Daughter of Sevenless rather than
activated SEV. Ptp-2 acts in oocytes downstream of
sheath/oocyte gap junctions to promote major sperm
protein (MSP)-induced MAP Kinase (MPK-1)
phosphorylation. Ptp-2 functions in the oocyte
cytoplasm, not at the cell surface to inhibit multiple
RasGAPs, resulting in sustained Ras activation. It is
thought that MSP triggers PTP-2/Ras activation and ROS
production to stimulate MPK-1 activity essential for
oocyte maturation and that secreted MSP domains and
Cu/Zn superoxide dismutases function antagonistically to
control ROS and MAPK signaling. In general SH2 domains
are involved in signal transduction. They typically bind
pTyr-containing ligands via two surface pockets, a pTyr
and hydrophobic binding pocket, allowing proteins with
SH2 domains to localize to tyrosine phosphorylated
sites.
Length = 99
Score = 36.6 bits (85), Expect = 0.003
Identities = 22/80 (27%), Positives = 37/80 (46%), Gaps = 6/80 (7%)
Query: 244 FYWGKMDRYEAEKLL-ESWPEGTFLLRDSAQEEYLFSVSFRKFGRSLHARIEQWNHKFSF 302
F+ EAE LL +G+FL R S F++S R+ H +I+ N +
Sbjct: 3 FHPVISG-IEAENLLKTRGVDGSFLARPSKSNPGDFTLSVRRGDEVTHIKIQ--NTGDYY 59
Query: 303 DSHDPNVYASPTVCGLIEHY 322
D + +A T+ L+++Y
Sbjct: 60 DLYGGEKFA--TLSELVQYY 77
>gnl|CDD|198231 cd10368, SH2_Src_Fyn, Src homology 2 (SH2) domain found in Fyn.
Fyn is a member of the Src non-receptor type tyrosine
kinase family of proteins. Fyn is involved in the
control of cell growth and is required in the following
pathways: T and B cell receptor signaling,
integrin-mediated signaling, growth factor and cytokine
receptor signaling, platelet activation, ion channel
function, cell adhesion, axon guidance, fertilization,
entry into mitosis, and differentiation of natural
killer cells, oligodendrocytes and keratinocytes. The
protein associates with the p85 subunit of
phosphatidylinositol 3-kinase and interacts with the
Fyn-binding protein. Alternatively spliced transcript
variants encoding distinct isoforms exist. Fyn is
primarily localized to the cytoplasmic leaflet of the
plasma membrane. Tyrosine phosphorylation of target
proteins by Fyn serves to either regulate target protein
activity, and/or to generate a binding site on the
target protein that recruits other signaling molecules.
FYN has been shown to interact with a number of proteins
including: BCAR1, Cbl, Janus kinase, nephrin, Sky,
tyrosine kinase, Wiskott-Aldrich syndrome protein, and
Zap-70. Fyn has a unique N-terminal domain, an SH3
domain, an SH2 domain, a kinase domain and a regulatory
tail, as do the other members of the family. In general
SH2 domains are involved in signal transduction. They
typically bind pTyr-containing ligands via two surface
pockets, a pTyr and hydrophobic binding pocket, allowing
proteins with SH2 domains to localize to tyrosine
phosphorylated sites.
Length = 101
Score = 36.9 bits (85), Expect = 0.003
Identities = 18/42 (42%), Positives = 29/42 (69%), Gaps = 2/42 (4%)
Query: 244 FYWGKMDRYEAEKLLESW--PEGTFLLRDSAQEEYLFSVSFR 283
+Y+GK+ R +AE+ L S+ P GTFL+R+S + +S+S R
Sbjct: 5 WYFGKLGRKDAERQLLSFGNPRGTFLIRESETTKGAYSLSIR 46
>gnl|CDD|198220 cd10357, SH2_ShkD_ShkE, Src homology 2 (SH2) domain found in SH2
domain-bearing protein kinases D and E (ShkD and ShkE).
SH2-bearing genes cloned from Dictyostelium include two
transcription factors, STATa and STATc, and a signaling
factor, SHK1 (shkA). A database search of the
Dictyostelium discoideum genome revealed two additional
putative STAT sequences, dd-STATb and dd-STATd, and four
additional putative SHK genes, dd-SHK2 (shkB), dd-SHK3
(shkC), dd-SHK4 (shkD), and dd-SHK5 (shkE). This model
contains members of shkD and shkE. All of the SHK
members are most closely related to the protein kinases
found in plants. However these kinases in plants are
not conjugated to any SH2 or SH2-like sequences.
Alignment data indicates that the SHK SH2 domains carry
some features of the STAT SH2 domains in Dictyostelium.
When STATc's linker domain was used for a BLAST search,
the sequence between the protein kinase domain and the
SH2 domain (the linker) of SHK was recovered, suggesting
a close relationship among these molecules within this
region. SHK's linker domain is predicted to contain an
alpha-helix which is indeed homologous to that of STAT.
Based on the phylogenetic alignment, SH2 domains can be
grouped into two categories, STAT-type and Src-type. SHK
family members are in between, but are closer to the
STAT-type which indicates a close relationship between
SHK and STAT families in their SH2 domains and further
supports the notion that SHKs linker-SH2 domain evolved
from STAT or STATL (STAT-like Linker-SH2) domain found
in plants. In SHK, STAT, and SPT6, the linker-SH2
domains all reside exclusively in the C-terminal
regions. In general SH2 domains are involved in signal
transduction. They typically bind pTyr-containing
ligands via two surface pockets, a pTyr and hydrophobic
binding pocket, allowing proteins with SH2 domains to
localize to tyrosine phosphorylated sites.
Length = 87
Score = 35.9 bits (83), Expect = 0.003
Identities = 22/54 (40%), Positives = 34/54 (62%), Gaps = 2/54 (3%)
Query: 243 SFYWGKMDRYEAEKLLESWPEGTFLLRDSAQE--EYLFSVSFRKFGRSLHARIE 294
S++ G + R EAEK L PEGTFL+R S+ + + F++S +K + +H RI
Sbjct: 11 SWFHGDISRDEAEKRLRGRPEGTFLIRLSSTDPKKTPFTISKKKKSKPVHKRIS 64
>gnl|CDD|198230 cd10367, SH2_Src_Fgr, Src homology 2 (SH2) domain found in
Gardner-Rasheed feline sarcoma viral (v-fgr) oncogene
homolog, Fgr. Fgr is a member of the Src non-receptor
type tyrosine kinase family of proteins. The protein
contains N-terminal sites for myristoylation and
palmitoylation, a PTK domain, and SH2 and SH3 domains
which are involved in mediating protein-protein
interactions with phosphotyrosine-containing and
proline-rich motifs, respectively. Fgr is expressed in
B-cells and myeloid cells, localizes to plasma membrane
ruffles, and functions as a negative regulator of cell
migration and adhesion triggered by the beta-2 integrin
signal transduction pathway. Multiple alternatively
spliced variants, encoding the same protein, have been
identified Fgr has been shown to interact with
Wiskott-Aldrich syndrome protein. Fgr has a unique
N-terminal domain, an SH3 domain, an SH2 domain, a
kinase domain and a regulatory tail, as do the other
members of the family. In general SH2 domains are
involved in signal transduction. They typically bind
pTyr-containing ligands via two surface pockets, a pTyr
and hydrophobic binding pocket, allowing proteins with
SH2 domains to localize to tyrosine phosphorylated
sites.
Length = 101
Score = 36.4 bits (84), Expect = 0.004
Identities = 16/42 (38%), Positives = 26/42 (61%), Gaps = 2/42 (4%)
Query: 244 FYWGKMDRYEAEKLL--ESWPEGTFLLRDSAQEEYLFSVSFR 283
+Y+GK+ R +AE+ L P G FL+R+S + +S+S R
Sbjct: 5 WYFGKIGRKDAERQLLSPGNPRGAFLIRESETTKGAYSLSIR 46
>gnl|CDD|198282 cd10419, SH2_Src_Fyn_isoform_b_like, Src homology 2 (SH2) domain
found in Fyn isoform b like proteins. Fyn is a member
of the Src non-receptor type tyrosine kinase family of
proteins. This cd contains the SH2 domain found in Fyn
isoform b type proteins. Fyn is involved in the control
of cell growth and is required in the following
pathways: T and B cell receptor signaling,
integrin-mediated signaling, growth factor and cytokine
receptor signaling, platelet activation, ion channel
function, cell adhesion, axon guidance, fertilization,
entry into mitosis, and differentiation of natural
killer cells, oligodendrocytes and keratinocytes. The
protein associates with the p85 subunit of
phosphatidylinositol 3-kinase and interacts with the
Fyn-binding protein. Alternatively spliced transcript
variants encoding distinct isoforms exist. Fyn is
primarily localized to the cytoplasmic leaflet of the
plasma membrane. Tyrosine phosphorylation of target
proteins by Fyn serves to either regulate target protein
activity, and/or to generate a binding site on the
target protein that recruits other signaling molecules.
FYN has been shown to interact with a number of proteins
including: BCAR1, Cbl, Janus kinase, nephrin, Sky,
tyrosine kinase, Wiskott-Aldrich syndrome protein, and
Zap-70. Fyn has a unique N-terminal domain, an SH3
domain, an SH2 domain, a kinase domain and a regulatory
tail, as do the other members of the family. In general
SH2 domains are involved in signal transduction. They
typically bind pTyr-containing ligands via two surface
pockets, a pTyr and hydrophobic binding pocket, allowing
proteins with SH2 domains to localize to tyrosine
phosphorylated sites.
Length = 101
Score = 36.2 bits (83), Expect = 0.004
Identities = 18/44 (40%), Positives = 30/44 (68%), Gaps = 2/44 (4%)
Query: 244 FYWGKMDRYEAEKLLESW--PEGTFLLRDSAQEEYLFSVSFRKF 285
+Y+GK+ R +AE+ L S+ P GTFL+R+S + +S+S R +
Sbjct: 5 WYFGKLGRKDAERQLLSFGNPRGTFLIRESETTKGAYSLSIRDW 48
>gnl|CDD|198224 cd10361, SH2_Fps_family, Src homology 2 (SH2) domain found in
feline sarcoma, Fujinami poultry sarcoma, and
fes-related (Fes/Fps/Fer) proteins. The Fps family
consists of members Fps/Fes and Fer/Flk/Tyk3. They are
cytoplasmic protein-tyrosine kinases implicated in
signaling downstream from cytokines, growth factors and
immune receptors. Fes/Fps/Fer contains three
coiled-coil regions, an SH2 (Src-homology-2) and a TK
(tyrosine kinase catalytic) domain signature. Members
here include: Fps/Fes, Fer, Kin-31, and In general SH2
domains are involved in signal transduction. They
typically bind pTyr-containing ligands via two surface
pockets, a pTyr and hydrophobic binding pocket, allowing
proteins with SH2 domains to localize to tyrosine
phosphorylated sites.
Length = 90
Score = 36.0 bits (84), Expect = 0.004
Identities = 19/95 (20%), Positives = 40/95 (42%), Gaps = 19/95 (20%)
Query: 237 KDITSCSFYWGKMDRYEAEKLLESWPEGTFLLR-----DSAQEEYLFSVSFRKFGRSLHA 291
KD+ + +Y G + R +AE+LL++ +G FL+R + + + SV +
Sbjct: 1 KDLENEPYYHGLLPREDAEELLKN--DGDFLVRKTEPKGGGKRKLVLSVRWDG----KIR 54
Query: 292 RIE-QW--NHKFSFDSHDPNVYASPTVCGLIEHYK 323
K+ + + ++ LI +Y+
Sbjct: 55 HFVINRDDGGKYYIEGK-----SFKSISELINYYQ 84
>gnl|CDD|239711 cd03742, SOCS_Rab40, SOCS (suppressors of cytokine signaling) box
of Rab40-like proteins. Rab40 is part of the Rab family
of small GTP-binding proteins that form the largest
family within the Ras superfamily. Rab proteins regulate
vesicular trafficking pathways, behaving as
membrane-associated molecular switches. Rab40 is
characterized by a SOCS box c-terminal to the GTPase
domain. The SOCS boxes interact with Elongins B and C,
Cullin-5 or Cullin-2, Rbx-1, and E2. Therefore,
SOCS-box-containing proteins probably function as E3
ubiquitin ligases and mediate the degradation of
proteins associated through their N-terminal regions.
Length = 43
Score = 34.5 bits (79), Expect = 0.005
Identities = 14/39 (35%), Positives = 20/39 (51%)
Query: 342 NFTFPLQHICRSVICSNISYDGISQLQLPKTLKSYLKEY 380
N LQ +C I S I +L LP ++KS+LK +
Sbjct: 1 NKVLSLQDLCCRAIVSCTPVYLIDKLPLPVSIKSHLKSF 39
>gnl|CDD|199827 cd09933, SH2_Src_family, Src homology 2 (SH2) domain found in the
Src family of non-receptor tyrosine kinases. The Src
family kinases are nonreceptor tyrosine kinases that
have been implicated in pathways regulating
proliferation, angiogenesis, invasion and metastasis,
and bone metabolism. It is thought that transforming
ability of Src is linked to its ability to activate key
signaling molecules in these pathways, rather than
through direct activity. As such blocking Src activation
has been a target for drug companies. Src family members
can be divided into 3 groups based on their expression
pattern: 1) Src, Fyn, and Yes; 2) Blk, Fgr, Hck, Lck,
and Lyn; and 3) Frk-related kinases Frk/Rak and Iyk/Bsk
Of these, cellular c-Src is the best studied and most
frequently implicated in oncogenesis. The c-Src contains
five distinct regions: a unique N-terminal domain, an
SH3 domain, an SH2 domain, a kinase domain and a
regulatory tail, as do the other members of the family.
Src exists in both active and inactive conformations.
Negative regulation occurs through phosphorylation of
Tyr, resulting in an intramolecular association between
phosphorylated Tyr and the SH2 domain of SRC, which
locks the protein in a closed conformation. Further
stabilization of the inactive state occurs through
interactions between the SH3 domain and a proline-rich
stretch of residues within the kinase domain.
Conversely, dephosphorylation of Tyr allows SRC to
assume an open conformation. Full activity requires
additional autophosphorylation of a Tyr residue within
the catalytic domain. Loss of the negative-regulatory
C-terminal segment has been shown to result in increased
activity and transforming potential. Phosphorylation of
the C-terminal Tyr residue by C-terminal Src kinase
(Csk) and Csk homology kinase results in increased
intramolecular interactions and consequent Src
inactivation. Specific phosphatases, protein tyrosine
phosphatase a (PTPa) and the SH-containing phosphatases
SHP1/SHP2, have also been shown to take a part in Src
activation. Src is also activated by direct binding of
focal adhesion kinase (Fak) and Crk-associated substrate
(Cas) to the SH2 domain. SRC activity can also be
regulated by numerous receptor tyrosine kinases (RTKs),
such as Her2, epidermal growth factor receptor (EGFR),
fibroblast growth factor receptor, platelet-derived
growth factor receptor (PDGFR), and vascular endothelial
growth factor receptor (VEGFR). In general SH2 domains
are involved in signal transduction. They typically bind
pTyr-containing ligands via two surface pockets, a pTyr
and hydrophobic binding pocket, allowing proteins with
SH2 domains to localize to tyrosine phosphorylated
sites.
Length = 101
Score = 35.6 bits (83), Expect = 0.007
Identities = 21/56 (37%), Positives = 30/56 (53%), Gaps = 7/56 (12%)
Query: 245 YWGKMDRYEAEKLL--ESWPEGTFLLRDSAQEEYLFSVSFRKFGRSL-----HARI 293
++GK+ R +AEKLL P GTFL+R+S +S+S R + H RI
Sbjct: 6 FFGKIKRKDAEKLLLAPGNPRGTFLIRESETTPGAYSLSVRDGDDARGDTVKHYRI 61
>gnl|CDD|239686 cd03716, SOCS_ASB_like, SOCS (suppressors of cytokine signaling)
box of ASB (ankyrin repeat and SOCS box) and SSB (SPRY
domain-containing SOCS box proteins) protein families.
ASB family members have a C-terminal SOCS box and an
N-terminal ankyrin-related sequence of a variable number
of repeats. SSB proteins contain a central SPRY domain
and a C-terminal SOCS. Recently, it has been shown that
all four SSB proteins interact with the MET, the
receptor protein-tyrosine kinase for hepatocyte growth
factor (HGF), and that SSB-1, SSB-2, and SSB-4 interact
with prostate apoptosis response protein-4. Both types
of interactions are mediated through the SPRY domain.
Length = 42
Score = 34.0 bits (79), Expect = 0.007
Identities = 14/35 (40%), Positives = 18/35 (51%), Gaps = 3/35 (8%)
Query: 346 PLQHICRSVICSNI---SYDGISQLQLPKTLKSYL 377
LQH+CR I + + I +L LP LK YL
Sbjct: 5 SLQHLCRLAIRRCLGRRRLELIKKLPLPPRLKDYL 39
>gnl|CDD|198252 cd10389, SH2_SHB, Src homology 2 domain found in SH2
domain-containing adapter protein B (SHB). SHB
functions in generating signaling compounds in response
to tyrosine kinase activation. SHB contains proline-rich
motifs, a phosphotyrosine binding (PTB) domain, tyrosine
phosphorylation sites, and a SH2 domain. SHB mediates
certain aspects of platelet-derived growth factor (PDGF)
receptor-, fibroblast growth factor (FGF) receptor-,
neural growth factor (NGF) receptor TRKA-, T cell
receptor-, interleukin-2 (IL-2) receptor- and focal
adhesion kinase- (FAK) signaling. SRC-like FYN-Related
Kinase FRK/RAK (also named BSK/IYK or GTK) and SHB
regulate apoptosis, proliferation and differentiation.
SHB promotes apoptosis and is also required for proper
mitogenicity, spreading and tubular morphogenesis in
endothelial cells. SHB also plays a role in preventing
early cavitation of embryoid bodies and reduces
differentiation to cells expressing albumin, amylase,
insulin and glucagon. SHB is a multifunctional protein
that has difference responses in different cells under
various conditions. In general SH2 domains are involved
in signal transduction. They typically bind
pTyr-containing ligands via two surface pockets, a pTyr
and hydrophobic binding pocket, allowing proteins with
SH2 domains to localize to tyrosine phosphorylated
sites.
Length = 97
Score = 35.1 bits (80), Expect = 0.009
Identities = 18/72 (25%), Positives = 37/72 (51%)
Query: 244 FYWGKMDRYEAEKLLESWPEGTFLLRDSAQEEYLFSVSFRKFGRSLHARIEQWNHKFSFD 303
+Y G + R +AE LL E ++L+R+S ++ +S+S + +H ++ + K+
Sbjct: 3 WYHGAISRGDAENLLRLCKECSYLVRNSQTSKHDYSLSLKSNQGFMHMKLAKTKEKYVLG 62
Query: 304 SHDPNVYASPTV 315
+ P + P V
Sbjct: 63 QNSPPFDSVPEV 74
>gnl|CDD|198217 cd10354, SH2_Cterm_RasGAP, C-terminal Src homology 2 (SH2) domain
found in Ras GTPase-activating protein 1 (GAP). RasGAP
is part of the GAP1 family of GTPase-activating
proteins. The protein is located in the cytoplasm and
stimulates the GTPase activity of normal RAS p21, but
not its oncogenic counterpart. Acting as a suppressor of
RAS function, the protein enhances the weak intrinsic
GTPase activity of RAS proteins resulting in RAS
inactivation, thereby allowing control of cellular
proliferation and differentiation. Mutations leading to
changes in the binding sites of either protein are
associated with basal cell carcinomas. Alternative
splicing results in two isoforms. The shorter isoform
which lacks the N-terminal hydrophobic region, has the
same activity, and is expressed in placental tissues.
In general longer isoform contains 2 SH2 domains, a SH3
domain, a pleckstrin homology (PH) domain, and a
calcium-dependent phospholipid-binding C2 domain. The
C-terminus contains the catalytic domain of RasGap which
catalyzes the activation of Ras by hydrolyzing GTP-bound
active Ras into an inactive GDP-bound form of Ras. This
model contains the C-terminal SH2 domain. In general SH2
domains are involved in signal transduction. They
typically bind pTyr-containing ligands via two surface
pockets, a pTyr and hydrophobic binding pocket, allowing
proteins with SH2 domains to localize to tyrosine
phosphorylated sites.
Length = 77
Score = 34.3 bits (79), Expect = 0.010
Identities = 19/59 (32%), Positives = 32/59 (54%), Gaps = 2/59 (3%)
Query: 244 FYWGKMDRYEAEKLL-ESWPEGTFLLRDSAQEEYLFSVSFRKFGRSLHARIE-QWNHKF 300
++ GK+ R EA +L + G+FL+R+S +S+SFR H +I N++F
Sbjct: 2 WFHGKISREEAYNMLVKVGGPGSFLVRESDNTPGDYSLSFRVNEGIKHFKIIPTGNNQF 60
>gnl|CDD|239693 cd03723, SOCS_ASB4_ASB18, SOCS (suppressors of cytokine signaling)
box of ASB4 and ASB18 proteins. ASB family members have
a C-terminal SOCS box and an N-terminal ankyrin-related
sequence. Asb4 was identified as imprinted gene in mice.
The general function of the SOCS box is the recruitment
of the ubiquitin-transferase system. The SOCS box
interacts with Elongins B and C, Cullin-5 or Cullin-2,
Rbx-1, and E2. Therefore, SOCS-box-containing proteins
probably function as E3 ubiquitin ligases and mediate
the degradation of proteins associated through their
N-terminal regions.
Length = 48
Score = 33.6 bits (77), Expect = 0.010
Identities = 14/34 (41%), Positives = 20/34 (58%), Gaps = 3/34 (8%)
Query: 347 LQHICRSVI---CSNISYDGISQLQLPKTLKSYL 377
LQH+CR I + + + QL LP +LK+YL
Sbjct: 6 LQHLCRCAIRKLLGSRCHKLVPQLSLPTSLKNYL 39
>gnl|CDD|198223 cd10360, SH2_Srm, Src homology 2 (SH2) domain found in Src-related
kinase lacking C-terminal regulatory tyrosine and
N-terminal myristoylation sites (srm). Srm is a
nonreceptor protein kinase that has two SH2 domains, a
SH3 domain, and a kinase domain with a tyrosine residue
for autophosphorylation. However it lacks an N-terminal
glycine for myristoylation and a C-terminal tyrosine
which suppresses kinase activity when phosphorylated.
Srm is most similar to members of the Tec family who
other members include: Tec, Btk/Emb, and Itk/Tsk/Emt.
However Srm differs in its N-terminal unique domain it
being much smaller than in the Tec family and is closer
to Src. Srm is thought to be a new family of nonreceptor
tyrosine kinases that may be redundant in function. In
general SH2 domains are involved in signal transduction.
They typically bind pTyr-containing ligands via two
surface pockets, a pTyr and hydrophobic binding pocket,
allowing proteins with SH2 domains to localize to
tyrosine phosphorylated sites.
Length = 79
Score = 34.5 bits (79), Expect = 0.011
Identities = 18/52 (34%), Positives = 28/52 (53%), Gaps = 2/52 (3%)
Query: 244 FYWGKMDRYEAEKLLESWPE--GTFLLRDSAQEEYLFSVSFRKFGRSLHARI 293
+Y+ + R +A++LL S P G FL+R S +S+S R + H RI
Sbjct: 2 WYFSGISRTQAQQLLLSPPNEPGAFLIRPSESSLGGYSLSVRAQAKVCHYRI 53
>gnl|CDD|198281 cd10418, SH2_Src_Fyn_isoform_a_like, Src homology 2 (SH2) domain
found in Fyn isoform a like proteins. Fyn is a member
of the Src non-receptor type tyrosine kinase family of
proteins. This cd contains the SH2 domain found in Fyn
isoform a type proteins. Fyn is involved in the control
of cell growth and is required in the following
pathways: T and B cell receptor signaling,
integrin-mediated signaling, growth factor and cytokine
receptor signaling, platelet activation, ion channel
function, cell adhesion, axon guidance, fertilization,
entry into mitosis, and differentiation of natural
killer cells, oligodendrocytes and keratinocytes. The
protein associates with the p85 subunit of
phosphatidylinositol 3-kinase and interacts with the
Fyn-binding protein. Alternatively spliced transcript
variants encoding distinct isoforms exist. Fyn is
primarily localized to the cytoplasmic leaflet of the
plasma membrane. Tyrosine phosphorylation of target
proteins by Fyn serves to either regulate target protein
activity, and/or to generate a binding site on the
target protein that recruits other signaling molecules.
FYN has been shown to interact with a number of proteins
including: BCAR1, Cbl, Janus kinase, nephrin, Sky,
tyrosine kinase, Wiskott-Aldrich syndrome protein, and
Zap-70. Fyn has a unique N-terminal domain, an SH3
domain, an SH2 domain, a kinase domain and a regulatory
tail, as do the other members of the family. In general
SH2 domains are involved in signal transduction. They
typically bind pTyr-containing ligands via two surface
pockets, a pTyr and hydrophobic binding pocket, allowing
proteins with SH2 domains to localize to tyrosine
phosphorylated sites.
Length = 101
Score = 35.0 bits (80), Expect = 0.011
Identities = 18/42 (42%), Positives = 29/42 (69%), Gaps = 2/42 (4%)
Query: 244 FYWGKMDRYEAEKLLESW--PEGTFLLRDSAQEEYLFSVSFR 283
+Y+GK+ R +AE+ L S+ P GTFL+R+S + +S+S R
Sbjct: 5 WYFGKLGRKDAERQLLSFGNPRGTFLIRESETTKGAYSLSIR 46
>gnl|CDD|198268 cd10405, SH2_Vav1, Src homology 2 (SH2) domain found in the Vav1
proteins. Proto-oncogene vav is a member of the Dbl
family of guanine nucleotide exchange factors (GEF) for
the Rho family of GTP binding proteins. All vavs are
activated by tyrosine phosphorylation leading to their
activation. There are three Vav mammalian family
members: Vav1 which is expressed in the hematopoietic
system, and Vav2 and Vav3 are more ubiquitously
expressed. Vav1 plays a role in T-cell and B-cell
development and activation. It has been identified as
the specific binding partner of Nef proteins from HIV-1,
resulting in morphological changes, cytoskeletal
rearrangements, and the JNK/SAPK signaling cascade,
leading to increased levels of viral transcription and
replication. Vav1 has been shown to interact with Ku70,
PLCG1, Lymphocyte cytosolic protein 2, Janus kinase 2,
SIAH2, S100B, Abl gene, ARHGDIB, SHB, PIK3R1, PRKCQ,
Grb2, MAPK1, Syk, Linker of activated T cells, Cbl gene
and EZH2. Vav proteins are involved in several processes
that require cytoskeletal reorganization, such as the
formation of the immunological synapse (IS),
phagocytosis, platelet aggregation, spreading, and
transformation. Vavs function as guanine nucleotide
exchange factors (GEFs) for the Rho/Rac family of
GTPases. Vav family members have several conserved
motifs/domains including: a leucine-rich region, a
leucine-zipper, a calponin homology (CH) domain, an
acidic domain, a Dbl-homology (DH) domain, a pleckstrin
homology (PH) domain, a cysteine-rich domain, 2 SH3
domains, a proline-rich region, and a SH2 domain. Vavs
are the only known Rho GEFs that have both the DH/PH
motifs and SH2/SH3 domains in the same protein. The
leucine-rich helix-loop-helix (HLH) domain is thought to
be involved in protein heterodimerization with other HLH
proteins and it may function as a negative regulator by
forming inactive heterodimers. The CH domain is usually
involved in the association with filamentous actin, but
in Vav it controls NFAT stimulation, Ca2+ mobilization,
and its transforming activity. Acidic domains are
involved in protein-protein interactions and contain
regulatory tyrosines. The DH domain is a GDP-GTP
exchange factor on Rho/Rac GTPases. The PH domain in
involved in interactions with GTP-binding proteins,
lipids and/or phosphorylated serine/threonine residues.
The SH3 domain is involved in localization of proteins
to specific sites within the cell interacting with
protein with proline-rich sequences. The SH2 domain
mediates a high affinity interaction with tyrosine
phosphorylated proteins. In general SH2 domains are
involved in signal transduction. They typically bind
pTyr-containing ligands via two surface pockets, a pTyr
and hydrophobic binding pocket, allowing proteins with
SH2 domains to localize to tyrosine phosphorylated
sites.
Length = 103
Score = 34.6 bits (79), Expect = 0.018
Identities = 14/46 (30%), Positives = 28/46 (60%)
Query: 238 DITSCSFYWGKMDRYEAEKLLESWPEGTFLLRDSAQEEYLFSVSFR 283
D++ +Y G M+R AE +L + +GT+L+R ++ F++S +
Sbjct: 1 DLSVHLWYAGPMERAGAESILANRSDGTYLVRQRVKDAAEFAISIK 46
>gnl|CDD|198255 cd10392, SH2_SHF, Src homology 2 domain found in SH2
domain-containing adapter protein F (SHF). SHF is
thought to play a role in PDGF-receptor signaling and
regulation of apoptosis. SHF is mainly expressed in
skeletal muscle, brain, liver, prostate, testis, ovary,
small intestine, and colon. SHF contains four putative
tyrosine phosphorylation sites and an SH2 domain. In
general SH2 domains are involved in signal transduction.
They typically bind pTyr-containing ligands via two
surface pockets, a pTyr and hydrophobic binding pocket,
allowing proteins with SH2 domains to localize to
tyrosine phosphorylated sites.
Length = 98
Score = 34.3 bits (78), Expect = 0.019
Identities = 23/85 (27%), Positives = 41/85 (48%), Gaps = 4/85 (4%)
Query: 244 FYWGKMDRYEAEKLLESWPEGTFLLRDSAQEEYLFSVSFRKFGRSLHARIEQW-NHKFSF 302
+Y G + R +AE LL E ++L+R+S + FS+S + +H ++ + HK+
Sbjct: 3 WYHGAISRTDAENLLRLCKEASYLVRNSETSKNDFSLSLKSSQGFMHMKLSRTKEHKYVL 62
Query: 303 DSHDPNVYASPTVCGLIEHYKDPTL 327
+ P + P + I HY L
Sbjct: 63 GQNSPPFSSVPEI---IHHYASRKL 84
>gnl|CDD|198254 cd10391, SH2_SHE, Src homology 2 domain found in SH2
domain-containing adapter protein E (SHE). SHE is
expressed in heart, lung, brain, and skeletal muscle.
SHE contains two pTry protein binding domains, protein
interaction domain (PID) and a SH2 domain, followed by a
glycine-proline rich region, all of which are N-terminal
to the phosphotyrosine binding (PTB) domain. In general
SH2 domains are involved in signal transduction. They
typically bind pTyr-containing ligands via two surface
pockets, a pTyr and hydrophobic binding pocket, allowing
proteins with SH2 domains to localize to tyrosine
phosphorylated sites.
Length = 98
Score = 33.8 bits (77), Expect = 0.031
Identities = 14/53 (26%), Positives = 27/53 (50%)
Query: 243 SFYWGKMDRYEAEKLLESWPEGTFLLRDSAQEEYLFSVSFRKFGRSLHARIEQ 295
+Y G + R EAE L+ E ++L+R+S +S++ + +H + Q
Sbjct: 2 PWYHGSISRAEAESRLQPCKEASYLVRNSESGNSKYSIALKTSQGCVHIIVAQ 54
>gnl|CDD|198179 cd09925, SH2_SHC, Src homology 2 (SH2) domain found in SH2 adaptor
protein C (SHC). SHC is involved in a wide variety of
pathways including regulating proliferation,
angiogenesis, invasion and metastasis, and bone
metabolism. An adapter protein, SHC has been implicated
in Ras activation following the stimulation of a number
of different receptors, including growth factors
[insulin, epidermal growth factor (EGF), nerve growth
factor, and platelet derived growth factor (PDGF)],
cytokines [interleukins 2, 3, and 5], erythropoietin,
and granulocyte/macrophage colony-stimulating factor,
and antigens [T-cell and B-cell receptors]. SHC has been
shown to bind to tyrosine-phosphorylated receptors, and
receptor stimulation leads to tyrosine phosphorylation
of SHC. Upon phosphorylation, SHC interacts with another
adapter protein, Grb2, which binds to the Ras GTP/GDP
exchange factor mSOS which leads to Ras activation. SHC
is composed of an N-terminal domain that interacts with
proteins containing phosphorylated tyrosines, a
(glycine/proline)-rich collagen-homology domain that
contains the phosphorylated binding site, and a
C-terminal SH2 domain. SH2 has been shown to interact
with the tyrosine-phosphorylated receptors of EGF and
PDGF and with the tyrosine-phosphorylated C chain of the
T-cell receptor, providing one of the mechanisms of
T-cell-mediated Ras activation. In general SH2 domains
are involved in signal transduction. They typically
bind pTyr-containing ligands via two surface pockets, a
pTyr and hydrophobic binding pocket, allowing proteins
with SH2 domains to localize to tyrosine phosphorylated
sites.
Length = 104
Score = 33.5 bits (77), Expect = 0.035
Identities = 14/29 (48%), Positives = 20/29 (68%), Gaps = 2/29 (6%)
Query: 245 YWGKMDRYEAEKLLESWPEGTFLLRDSAQ 273
Y GKM R +AE LL++ +G FL+R+S
Sbjct: 10 YHGKMSRRDAESLLQT--DGDFLVRESTT 36
>gnl|CDD|198191 cd09938, SH2_N-SH2_Zap70_Syk_like, N-terminal Src homology 2 (SH2)
domain found in Zeta-chain-associated protein kinase 70
(ZAP-70) and Spleen tyrosine kinase (Syk) proteins.
ZAP-70 and Syk comprise a family of hematopoietic cell
specific protein tyrosine kinases (PTKs) that are
required for antigen and antibody receptor function.
ZAP-70 is expressed in T and natural killer (NK) cells
and Syk is expressed in B cells, mast cells,
polymorphonuclear leukocytes, platelets, macrophages,
and immature T cells. They are required for the proper
development of T and B cells, immune receptors, and
activating NK cells. They consist of two N-terminal Src
homology 2 (SH2) domains and a C-terminal kinase domain
separated from the SH2 domains by a linker or hinge
region. Phosphorylation of both tyrosine residues within
the Immunoreceptor Tyrosine-based Activation Motifs
(ITAM; consensus sequence Yxx[LI]x(7,8)Yxx[LI]) by the
Src-family PTKs is required for efficient interaction of
ZAP-70 and Syk with the receptor subunits and for
receptor function. ZAP-70 forms two phosphotyrosine
binding pockets, one of which is shared by both SH2
domains. In Syk the two SH2 domains do not form such a
phosphotyrosine-binding site. The SH2 domains here are
believed to function independently. In addition, the two
SH2 domains of Syk display flexibility in their relative
orientation, allowing Syk to accommodate a greater
variety of spacing sequences between the ITAM
phosphotyrosines and singly phosphorylated non-classical
ITAM ligands. This model contains the N-terminus SH2
domains of both Syk and Zap70. In general SH2 domains
are involved in signal transduction. They typically bind
pTyr-containing ligands via two surface pockets, a pTyr
and hydrophobic binding pocket, allowing proteins with
SH2 domains to localize to tyrosine phosphorylated
sites.
Length = 104
Score = 33.5 bits (77), Expect = 0.036
Identities = 17/54 (31%), Positives = 28/54 (51%), Gaps = 2/54 (3%)
Query: 244 FYWGKMDRYEAEKLLE--SWPEGTFLLRDSAQEEYLFSVSFRKFGRSLHARIEQ 295
F++G + R EAE+ L+ +G FLLR S + + +S + H IE+
Sbjct: 3 FFYGSITREEAEEYLKLAGMSDGLFLLRQSLRSLGGYVLSVCHGRKFHHYTIER 56
>gnl|CDD|198229 cd10366, SH2_Src_Yes, Src homology 2 (SH2) domain found in Yes.
Yes is a member of the Src non-receptor type tyrosine
kinase family of proteins. Yes is the cellular homolog
of the Yamaguchi sarcoma virus oncogene. In humans it is
encoded by the YES1 gene which maps to chromosome 18 and
is in close proximity to thymidylate synthase. A
corresponding Yes pseudogene has been found on
chromosome 22. YES1 has been shown to interact with
Janus kinase 2, CTNND1,RPL10, and Occludin. Yes1 has a
unique N-terminal domain, an SH3 domain, an SH2 domain,
a kinase domain and a regulatory tail, as do the other
members of the family. In general SH2 domains are
involved in signal transduction. They typically bind
pTyr-containing ligands via two surface pockets, a pTyr
and hydrophobic binding pocket, allowing proteins with
SH2 domains to localize to tyrosine phosphorylated
sites.
Length = 101
Score = 33.1 bits (75), Expect = 0.047
Identities = 17/44 (38%), Positives = 27/44 (61%), Gaps = 2/44 (4%)
Query: 244 FYWGKMDRYEAEKLL--ESWPEGTFLLRDSAQEEYLFSVSFRKF 285
+Y+GKM R +AE+LL G FL+R+S + +S+S R +
Sbjct: 5 WYFGKMGRKDAERLLLNPGNQRGIFLVRESETTKGAYSLSIRDW 48
>gnl|CDD|198269 cd10406, SH2_Vav2, Src homology 2 (SH2) domain found in the Vav2
proteins. Proto-oncogene vav is a member of the Dbl
family of guanine nucleotide exchange factors (GEF) for
the Rho family of GTP binding proteins. All vavs are
activated by tyrosine phosphorylation leading to their
activation. There are three Vav mammalian family
members: Vav1 which is expressed in the hematopoietic
system, and Vav2 and Vav3 are more ubiquitously
expressed. Vav2 is a GEF for RhoA, RhoB and RhoG and may
activate Rac1 and Cdc42. Vav2 has been shown to interact
with CD19 and Grb2. Alternatively spliced transcript
variants encoding different isoforms have been found for
Vav2. Vav proteins are involved in several processes
that require cytoskeletal reorganization, such as the
formation of the immunological synapse (IS),
phagocytosis, platelet aggregation, spreading, and
transformation. Vavs function as guanine nucleotide
exchange factors (GEFs) for the Rho/Rac family of
GTPases. Vav family members have several conserved
motifs/domains including: a leucine-rich region, a
leucine-zipper, a calponin homology (CH) domain, an
acidic domain, a Dbl-homology (DH) domain, a pleckstrin
homology (PH) domain, a cysteine-rich domain, 2 SH3
domains, a proline-rich region, and a SH2 domain. Vavs
are the only known Rho GEFs that have both the DH/PH
motifs and SH2/SH3 domains in the same protein. The
leucine-rich helix-loop-helix (HLH) domain is thought to
be involved in protein heterodimerization with other HLH
proteins and it may function as a negative regulator by
forming inactive heterodimers. The CH domain is usually
involved in the association with filamentous actin, but
in Vav it controls NFAT stimulation, Ca2+ mobilization,
and its transforming activity. Acidic domains are
involved in protein-protein interactions and contain
regulatory tyrosines. The DH domain is a GDP-GTP
exchange factor on Rho/Rac GTPases. The PH domain in
involved in interactions with GTP-binding proteins,
lipids and/or phosphorylated serine/threonine residues.
The SH3 domain is involved in localization of proteins
to specific sites within the cell interacting with
protein with proline-rich sequences. The SH2 domain
mediates a high affinity interaction with tyrosine
phosphorylated proteins. In general SH2 domains are
involved in signal transduction. They typically bind
pTyr-containing ligands via two surface pockets, a pTyr
and hydrophobic binding pocket, allowing proteins with
SH2 domains to localize to tyrosine phosphorylated
sites.
Length = 103
Score = 33.1 bits (75), Expect = 0.050
Identities = 18/64 (28%), Positives = 34/64 (53%), Gaps = 3/64 (4%)
Query: 238 DITSCSFYWGKMDRYEAEKLLESWPEGTFLLRDSAQEEYLFSVSFRKFGRSLHARI---E 294
D T+ ++ G M+R + + LL+S GT+L+R+ E F++S + H ++ +
Sbjct: 1 DYTAYPWFAGNMERQQTDNLLKSHASGTYLIRERPAEAERFAISIKFNDEVKHIKVVEKD 60
Query: 295 QWNH 298
W H
Sbjct: 61 NWIH 64
>gnl|CDD|239704 cd03735, SOCS_SOCS1, SOCS (suppressors of cytokine signaling) box
of SOCS1-like proteins. Together with CIS1, the CIS/SOCS
family of proteins is characterized by the presence of a
C-terminal SOCS box and a central SH2 domain. SOCS1,
like CIS1 and SOCS3, is involved in the down-regulation
of the JAK/STAT pathway. SOCS1 has a dual function as a
direct potent JAK kinase inhibitor and as a component of
an E3 ubiquitin-ligase complex recruiting substrates to
the protein degradation machinery.
Length = 43
Score = 31.0 bits (70), Expect = 0.071
Identities = 12/38 (31%), Positives = 22/38 (57%)
Query: 346 PLQHICRSVICSNISYDGISQLQLPKTLKSYLKEYHYK 383
PLQ +CR I + + ++++ L LK YLK + ++
Sbjct: 5 PLQELCRKSIVATFGRENLARIPLNPVLKDYLKSFPFQ 42
>gnl|CDD|198211 cd10348, SH2_Cterm_shark_like, C-terminal Src homology 2 (SH2)
domain found in SH2 domains, ANK, and kinase domain
(shark) proteins. These non-receptor protein-tyrosine
kinases contain two SH2 domains, five ankyrin (ANK)-like
repeats, and a potential tyrosine phosphorylation site
in its carboxyl-terminal tail which resembles the
phosphorylation site in members of the src family. Like,
mammalian non-receptor protein-tyrosine kinases, ZAP-70
and syk proteins, they do not have SH3 domains. However,
the presence of ANK makes these unique among
protein-tyrosine kinases. Both tyrosine kinases and ANK
repeats have been shown to transduce developmental
signals, and SH2 domains are known to participate
intimately in tyrosine kinase signaling. These tyrosine
kinases are believed to be involved in epithelial cell
polarity. The members of this family include the shark
(SH2 domains, ANK, and kinase domain) gene in Drosophila
and yellow fever mosquitos, as well as the hydra protein
HTK16. Drosophila Shark is proposed to transduce
intracellularly the Crumbs, a protein necessary for
proper organization of ectodermal epithelia,
intercellular signal. In general SH2 domains are
involved in signal transduction. They typically bind
pTyr-containing ligands via two surface pockets, a pTyr
and hydrophobic binding pocket, allowing proteins with
SH2 domains to localize to tyrosine phosphorylated
sites.
Length = 86
Score = 32.4 bits (74), Expect = 0.075
Identities = 21/83 (25%), Positives = 41/83 (49%), Gaps = 9/83 (10%)
Query: 244 FYWGKMDRYEAEKLLE--SWPEGTFLLRDSAQE--EYLFSVSFRKFGRSLHARIEQWNHK 299
+ G +DR EA ++L+ + +G+FL+R S + Y+ ++ + H I+ + K
Sbjct: 2 WLHGALDRNEAVEILKQKADADGSFLVRYSRRRPGGYVLTLVYEN--HVYHFEIQNRDDK 59
Query: 300 FSFDSHDPNVYASPTVCGLIEHY 322
+ + P ++ LIEHY
Sbjct: 60 WFYIDDGPYF---ESLEHLIEHY 79
>gnl|CDD|199830 cd10349, SH2_SH2D2A_SH2D7, Src homology 2 domain found in the SH2
domain containing protein 2A and 7 (SH2D2A and SH2D7).
SH2D2A and SH7 both contain a single SH2 domain. In
general SH2 domains are involved in signal transduction.
They typically bind pTyr-containing ligands via two
surface pockets, a pTyr and hydrophobic binding pocket,
allowing proteins with SH2 domains to localize to
tyrosine phosphorylated sites.
Length = 77
Score = 31.7 bits (72), Expect = 0.082
Identities = 22/76 (28%), Positives = 36/76 (47%), Gaps = 3/76 (3%)
Query: 247 GKMDRYEAEKLLESWPEGTFLLRDSAQEEYLFSVSFRKFGRSLHARIEQWNHKFSFDSHD 306
G + R EAE+LLE P+G +L+R S + F +S+R H + Q +
Sbjct: 5 GFITRREAERLLEPKPQGCYLVRFS-ESAVTFVLSYRSRTCCRHFLLAQLRDGRHVVLGE 63
Query: 307 PNVYASPTVCGLIEHY 322
+ +A + L+ HY
Sbjct: 64 DSAHA--RLQDLLLHY 77
>gnl|CDD|198228 cd10365, SH2_Src_Src, Src homology 2 (SH2) domain found in tyrosine
kinase sarcoma (Src). Src is a member of the Src
non-receptor type tyrosine kinase family of proteins.
Src is thought to play a role in the regulation of
embryonic development and cell growth. Members here
include v-Src and c-Src. v-Src lacks the C-terminal
inhibitory phosphorylation site and is therefore
constitutively active as opposed to normal cellular src
(c-Src) which is only activated under certain
circumstances where it is required (e.g. growth factor
signaling). v-Src is an oncogene whereas c-Src is a
proto-oncogene. c-Src consists of three domains, an
N-terminal SH3 domain, a central SH2 domain and a
tyrosine kinase domain. The SH2 and SH3 domains work
together in the auto-inhibition of the kinase domain.
The phosphorylation of an inhibitory tyrosine near the
c-terminus of the protein produces a binding site for
the SH2 domain which then facilitates binding of the SH3
domain to a polyproline site within the linker between
the SH2 domain and the kinase domain. Binding of the SH3
domain inactivates the enzyme. This allows for multiple
mechanisms for c-Src activation: dephosphorylation of
the C-terminal tyrosine by a protein tyrosine
phosphatase, binding of the SH2 domain by a competitive
phospho-tyrosine residue, or competitive binding of a
polyproline binding site to the SH3 domain. Unlike most
other Src members Src lacks cysteine residues in the SH4
domain that undergo palmitylation. Serine and threonine
phosphorylation sites have also been identified in the
unique domains of Src and are believed to modulate
protein-protein interactions or regulate catalytic
activity. Alternatively spliced forms of Src, which
contain 6- or 11-amino acid insertions in the SH3
domain, are expressed in CNS neurons. c-Src has a unique
N-terminal domain, an SH3 domain, an SH2 domain, a
kinase domain and a regulatory tail, as do the other
members of the family. In general SH2 domains are
involved in signal transduction. They typically bind
pTyr-containing ligands via two surface pockets, a pTyr
and hydrophobic binding pocket, allowing proteins with
SH2 domains to localize to tyrosine phosphorylated
sites.
Length = 101
Score = 32.3 bits (73), Expect = 0.10
Identities = 19/42 (45%), Positives = 28/42 (66%), Gaps = 4/42 (9%)
Query: 244 FYWGKMDRYEAEKLLESW--PEGTFLLRDSAQEE--YLFSVS 281
+Y+GK+ R E+E+LL + P GTFL+R+S + Y SVS
Sbjct: 5 WYFGKITRRESERLLLNAENPRGTFLVRESETTKGAYCLSVS 46
>gnl|CDD|198207 cd10344, SH2_SLAP, Src homology 2 domain found in Src-like adaptor
proteins. SLAP belongs to the subfamily of adapter
proteins that negatively regulate cellular signaling
initiated by tyrosine kinases. It has a myristylated
N-terminus, SH3 and SH2 domains with high homology to
Src family tyrosine kinases, and a unique C-terminal
tail, which is important for c-Cbl binding. SLAP
negatively regulates platelet-derived growth factor
(PDGF)-induced mitogenesis in fibroblasts and regulates
F-actin assembly for dorsal ruffles formation. c-Cbl
mediated SLAP inhibition towards actin remodeling.
Moreover, SLAP enhanced PDGF-induced c-Cbl
phosphorylation by SFK. In contrast, SLAP mitogenic
inhibition was not mediated by c-Cbl, but it rather
involved a competitive mechanism with SFK for
PDGF-receptor (PDGFR) association and mitogenic
signaling. Accordingly, phosphorylation of the Src
mitogenic substrates Stat3 and Shc were reduced by SLAP.
Thus, we concluded that SLAP regulates PDGFR signaling
by two independent mechanisms: a competitive mechanism
for PDGF-induced Src mitogenic signaling and a
non-competitive mechanism for dorsal ruffles formation
mediated by c-Cbl. SLAP is a hematopoietic adaptor
containing Src homology (SH)3 and SH2 motifs and a
unique carboxy terminus. Unlike c-Src, SLAP lacks a
tyrosine kinase domain. Unlike c-Src, SLAP does not
impact resorptive function of mature osteoclasts but
induces their early apoptosis. SLAP negatively regulates
differentiation of osteoclasts and proliferation of
their precursors. Conversely, SLAP decreases osteoclast
death by inhibiting activation of caspase 3. In general
SH2 domains are involved in signal transduction. They
typically bind pTyr-containing ligands via two surface
pockets, a pTyr and hydrophobic binding pocket, allowing
proteins with SH2 domains to localize to tyrosine
phosphorylated sites.
Length = 104
Score = 32.1 bits (73), Expect = 0.12
Identities = 21/81 (25%), Positives = 35/81 (43%), Gaps = 10/81 (12%)
Query: 251 RYEAEKLLE--SWPEGTFLLRDSAQEEYLFSVSFRKFGRSLHARIEQWNHKFSFDSHDPN 308
R +AE+LL G+FL+R+S +S+S R G ++ H F +
Sbjct: 19 REKAEELLMLPGNQVGSFLIRESETRRGCYSLSVRHRGSQSRDSVK---HYRIFRLDNGW 75
Query: 309 VYASP-----TVCGLIEHYKD 324
Y SP + ++ HY +
Sbjct: 76 FYISPRLTFQCLEDMVNHYSE 96
>gnl|CDD|198183 cd09929, SH2_BLNK_SLP-76, Src homology 2 (SH2) domain found in
B-cell linker (BLNK) protein and SH2 domain-containing
leukocyte protein of 76 kDa (SLP-76). BLNK (also known
as SLP-65 or BASH) is an important adaptor protein
expressed in B-lineage cells. BLNK consists of a
N-terminal sterile alpha motif (SAM) domain and a
C-terminal SH2 domain. BLNK is a cytoplasmic protein,
but a part of it is bound to the plasma membrane through
an N-terminal leucine zipper motif and transiently bound
to a cytoplasmic domain of Iga through its C-terminal
SH2 domain upon B cell antigen receptor
(BCR)-stimulation. A non-ITAM phosphotyrosine in Iga is
necessary for the binding with the BLNK SH2 domain
and/or for normal BLNK function in signaling and B cell
activation. Upon phosphorylation BLNK binds Btk and
PLCgamma2 through their SH2 domains and mediates
PLCgamma2 activation by Btk. BLNK also binds other
signaling molecules such as Vav, Grb2, Syk, and HPK1.
BLNK has been shown to be necessary for BCR-mediated
Ca2+ mobilization, for the activation of
mitogen-activated protein kinases such as ERK, JNK, and
p38 in a chicken B cell line DT40, and for activation of
transcription factors such as NF-AT and NF-kappaB in
human or mouse B cells. BLNK is involved in B cell
development, B cell survival, activation, proliferation,
and T-independent immune responses. BLNK is structurally
homologous to SLP-76. SLP-76 and (linker for activation
of T cells) LAT are adaptor/linker proteins in T cell
antigen receptor activation and T cell development. BLNK
interacts with many downstream signaling proteins that
interact directly with both SLP-76 and LAT. New data
suggest functional complementation of SLP-76 and LAT in
T cell antigen receptor function with BLNK in BCR
function. In general SH2 domains are involved in signal
transduction. They typically bind pTyr-containing
ligands via two surface pockets, a pTyr and hydrophobic
binding pocket, allowing proteins with SH2 domains to
localize to tyrosine phosphorylated sites.
Length = 121
Score = 32.3 bits (74), Expect = 0.15
Identities = 27/110 (24%), Positives = 48/110 (43%), Gaps = 25/110 (22%)
Query: 235 DLKDITSCSFYWGKMDRYEAEK-LLESWPEGTFLLRDS----AQEEYLFSVSFRKFGRSL 289
+ D+ +Y G +DR EAE+ L S +GTFL+RDS + + Y V + ++
Sbjct: 4 EEADLLPKEWYAGNIDRKEAEEALRRSNKDGTFLVRDSSGKDSSQPYTLMVLYNDKVYNI 63
Query: 290 HARIEQWNHKFS----------FDSHDPNVYASPTVCGLIEHYKDPTLVM 329
R + +++ F S V +IEH++ L++
Sbjct: 64 QIRFLENTRQYALGTGLRGEETFSS----------VAEIIEHHQKTPLLL 103
>gnl|CDD|199832 cd10417, SH2_SH2D7, Src homology 2 domain found in the SH2 domain
containing protein 7 (SH2D7). SH2D7 contains a single
SH2 domain. In general SH2 domains are involved in
signal transduction. They typically bind pTyr-containing
ligands via two surface pockets, a pTyr and hydrophobic
binding pocket, allowing proteins with SH2 domains to
localize to tyrosine phosphorylated sites.
Length = 102
Score = 31.4 bits (71), Expect = 0.22
Identities = 28/95 (29%), Positives = 45/95 (47%), Gaps = 4/95 (4%)
Query: 247 GKMDRYEAEKLLESWPEGTFLLRDSAQEEYLFSVSFRKFGRSLHARIEQWNHKFSFDSHD 306
G + R + E+LL G+FL+R S + +S+R R H I Q ++ S D
Sbjct: 12 GFITRKQTEQLLRDKALGSFLIRLS-DRATGYILSYRGSDRCRHFVINQLRNRRYLISGD 70
Query: 307 PNVYASPTVCGLIEHYKDPTLVMFFEPMLTIPLHR 341
+ ++ T+ L+ HY++ L F E LT R
Sbjct: 71 TSSHS--TLAELVRHYQEVQLEPFGE-TLTAACPR 102
>gnl|CDD|198181 cd09927, SH2_Tensin_like, Src homology 2 domain found in
Tensin-like proteins. SH2 domain found in Tensin-like
proteins. The Tensins are a family of intracellular
proteins that interact with receptor tyrosine kinases
(RTKs), integrins, and actin. They are thought act as
signaling bridges between the extracellular space and
the cytoskeleton. There are four homologues: Tensin1,
Tensin2 (TENC1, C1-TEN), Tensin3 and Tensin4 (cten), all
of which contain a C-terminal tandem SH2-PTB domain
pairing, as well as actin-binding regions that may
localize them to focal adhesions. The isoforms of
Tensin2 and Tensin3 contain N-terminal C1 domains, which
are atypical and not expected to bind to phorbol esters.
Tensins 1-3 contain a phosphatase (PTPase) and C2 domain
pairing which resembles PTEN (phosphatase and tensin
homologue deleted on chromosome 10) protein. PTEN is a
lipid phosphatase that dephosphorylates
phosphatidylinositol 3,4,5-trisphosphate
(PtdIns(3,4,5)P3) to yield phosphatidylinositol
4,5-bisphosphate (PtdIns(4,5)P2). As PtdIns(3,4,5)P3 is
the product of phosphatidylinositol 3-kinase (PI3K)
activity, PTEN is therefore a key negative regulator of
the PI3K pathway. Because of their PTEN-like domains,
the Tensins may also possess phosphoinositide-binding or
phosphatase capabilities. However, only Tensin2 and
Tensin3 have the potential to be phosphatases since only
their PTPase domains contain a cysteine residue that is
essential for catalytic activity. In general SH2 domains
are involved in signal transduction. They typically bind
pTyr-containing ligands via two surface pockets, a pTyr
and hydrophobic binding pocket, allowing proteins with
SH2 domains to localize to tyrosine phosphorylated
sites.
Length = 116
Score = 31.2 bits (71), Expect = 0.28
Identities = 16/31 (51%), Positives = 20/31 (64%), Gaps = 2/31 (6%)
Query: 243 SFYWGK--MDRYEAEKLLESWPEGTFLLRDS 271
S YW K + R +A LL+ P GTFL+RDS
Sbjct: 2 SKYWYKPNISRDQAIALLKDKPPGTFLVRDS 32
>gnl|CDD|198200 cd10337, SH2_BCAR3, Src homology 2 (SH2) domain in the Breast
Cancer Anti-estrogen Resistance protein 3. BCAR3 is
part of a growing family of guanine nucleotide exchange
factors is responsible for activation of Ras-family
GTPases, including Sos1 and 2, GRF1 and 2,
CalDAG-GEF/GRP1-4, C3G, cAMP-GEF/Epac 1 and 2, PDZ-GEFs,
MR-GEF, RalGDS family members, RalGPS, RasGEF, Smg GDS,
and phospholipase C(epsilon). 12102558 21262352 BCAR3
binds to the carboxy-terminus of BCAR1/p130Cas, a focal
adhesion adapter protein. Over expression of BCAR1
(p130Cas) and BCAR3 induces estrogen independent growth
in normally estrogen-dependent cell lines. They have
been linked to resistance to anti-estrogens in breast
cancer, Rac activation, and cell motility, though the
BCAR3/p130Cas complex is not required for this activity
in BCAR3. Many BCAR3-mediated signaling events in
epithelial and mesenchymal cells are independent of
p130Cas association. Structurally these proteins contain
a single SH2 domain upstream of their RasGEF domain,
which is responsible for the ability of BCAR3 to enhance
p130Cas over-expression-induced migration. In general
SH2 domains are involved in signal transduction. They
typically bind pTyr-containing ligands via two surface
pockets, a pTyr and hydrophobic binding pocket, allowing
proteins with SH2 domains to localize to tyrosine
phosphorylated sites.
Length = 136
Score = 31.5 bits (72), Expect = 0.32
Identities = 20/58 (34%), Positives = 35/58 (60%), Gaps = 6/58 (10%)
Query: 238 DITSCSFYWGKMDRYEAEKLLESWPEGTFLLRDSAQE--EYLFSVSFRKFGRSLHARI 293
D+ S ++Y G++ R AE L++ EG FL+RDS +Y+ + ++ G+ LH +I
Sbjct: 2 DLRSHAWYHGRIPRQVAESLVQR--EGDFLVRDSLSSPGDYVLTCRWK--GQPLHFKI 55
>gnl|CDD|199831 cd10369, SH2_Src_Frk, Src homology 2 (SH2) domain found in the
Fyn-related kinase (Frk). Frk is a member of the Src
non-receptor type tyrosine kinase family of proteins.
The Frk subfamily is composed of Frk/Rak and
Iyk/Bsk/Gst. It is expressed primarily epithelial cells.
Frk is a nuclear protein and may function during G1 and
S phase of the cell cycle and suppress growth. Unlike
the other Src members it lacks a glycine at position 2
of SH4 which is important for addition of a myristic
acid moiety that is involved in targeting Src PTKs to
cellular membranes. FRK and SHB exert similar effects
when overexpressed in rat phaeochromocytoma (PC12) and
beta-cells, where both induce PC12 cell differentiation
and beta-cell proliferation. Under conditions that cause
beta-cell degeneration these proteins augment beta-cell
apoptosis. The FRK-SHB responses involve FAK and insulin
receptor substrates (IRS) -1 and -2. Frk has been
demonstrated to interact with retinoblastoma protein.
Frk regulates PTEN protein stability by phosphorylating
PTEN, which in turn prevents PTEN degradation. Frk also
plays a role in regulation of embryonal pancreatic beta
cell formation. Frk has a unique N-terminal domain, an
SH3 domain, an SH2 domain, a kinase domain and a
regulatory tail, as do the other members of the family.
Like the other members of the Src family the SH2 domain
in addition to binding the target, also plays an
autoinhibitory role by binding to its activation loop.
The tryosine involved is at the same site as the
tyrosine involved in the autophosphorylation of Src. In
general SH2 domains are involved in signal transduction.
They typically bind pTyr-containing ligands via two
surface pockets, a pTyr and hydrophobic binding pocket,
allowing proteins with SH2 domains to localize to
tyrosine phosphorylated sites.
Length = 96
Score = 30.6 bits (69), Expect = 0.32
Identities = 18/54 (33%), Positives = 29/54 (53%), Gaps = 2/54 (3%)
Query: 244 FYWGKMDRYEAEK--LLESWPEGTFLLRDSAQEEYLFSVSFRKFGRSLHARIEQ 295
+++G + R +AEK L G FL+R+S ++ FS+S G H RI +
Sbjct: 5 WFFGAIKRADAEKQLLYSENQTGAFLIRESESQKGEFSLSVLDGGVVKHYRIRR 58
>gnl|CDD|198260 cd10397, SH2_Tec_Btk, Src homology 2 (SH2) domain found in Tec
protein, Bruton's tyrosine kinase (Btk). A member of
the Tec protein tyrosine kinase Btk is expressed in bone
marrow, spleen, all hematopoietic cells except T
lymphocytes and plasma cells where it plays a crucial
role in B cell maturation and mast cell activation. Btk
has been shown to interact with GNAQ, PLCG2, protein
kinase D1, B-cell linker, SH3BP5, caveolin 1, ARID3A,
and GTF2I. Most of the Tec family members have a PH
domain (Txk and the short (type 1) splice variant of
Drosophila Btk29A are exceptions), a Tec homology (TH)
domain, a SH3 domain, a SH2 domain, and a protein kinase
catalytic domain. Btk is implicated in the primary
immunodeficiency disease X-linked agammaglobulinemia
(Bruton's agammaglobulinemia). The TH domain consists
of a Zn2+-binding Btk motif and a proline-rich region.
The Btk motif is found in Tec kinases, Ras GAP, and
IGBP. It is crucial for the function of Tec PH domains
and it's lack of presence in Txk is not surprising since
it lacks a PH domain. The type 1 splice form of the
Drosophila homolog also lacks both the PH domain and the
Btk motif. The proline-rich regions are highly
conserved for the most part with the exception of Bmx
whose residues surrounding the PXXP motif are not
conserved (TH-like) and Btk29A which is entirely unique
with large numbers of glycine residues (TH-extended).
Tec family members all lack a C-terminal tyrosine having
an autoinhibitory function in its phosphorylated state.
Two tyrosine phosphorylation (pY) sites have been
identified in Btk: one located in the activation loop of
the catalytic domain which regulates the transition
between open (active) and closed (inactive) states and
the other in its SH3 domain. In general SH2 domains are
involved in signal transduction. They typically bind
pTyr-containing ligands via two surface pockets, a pTyr
and hydrophobic binding pocket, allowing proteins with
SH2 domains to localize to tyrosine phosphorylated
sites.
Length = 106
Score = 31.0 bits (70), Expect = 0.36
Identities = 19/58 (32%), Positives = 29/58 (50%), Gaps = 3/58 (5%)
Query: 242 CSFYWGKMDRYEAEKLLESW-PEGTFLLRDSAQE-EYLFSVSFRKFGRSLHARIEQWN 297
+Y M R +AE+LL+ EG F++RDS++ +Y SV F K I +
Sbjct: 6 YEWYSKNMTRSQAEQLLKQEGKEGGFIVRDSSKAGKYTVSV-FAKSAGDPQGVIRHYV 62
>gnl|CDD|239703 cd03734, SOCS_CIS1, SOCS (suppressors of cytokine signaling) box of
CIS (cytokine-inducible SH2 protein) 1-like proteins.
Together with the SOCS proteins, the CIS/SOCS family of
proteins is characterized by the presence of a
C-terminal SOCS box and a central SH2 domain. CIS1, like
SOCS1 and SOCS3, is involved in the down-regulation of
the JAK/STAT pathway. CIS1 binds to cytokine receptors
at STAT5-docking sites, which prohibits recruitment of
STAT5 to the receptor signaling complex and results in
the down-regulation of activation by STAT5.
Length = 41
Score = 29.2 bits (65), Expect = 0.36
Identities = 14/37 (37%), Positives = 22/37 (59%), Gaps = 2/37 (5%)
Query: 347 LQHICRSVICSNISYDGISQLQLPKTLKSYLKEYHYK 383
LQH+CR VI N + L LP+ + YL++Y ++
Sbjct: 6 LQHLCRLVI--NRLVTDVDCLPLPRRMADYLRQYPFQ 40
>gnl|CDD|198279 cd10416, SH2_SH2D2A, Src homology 2 domain found in the SH2 domain
containing protein 2A (SH2D2A). SH2D2A contains a
single SH2 domain. In general SH2 domains are involved
in signal transduction. They typically bind
pTyr-containing ligands via two surface pockets, a pTyr
and hydrophobic binding pocket, allowing proteins with
SH2 domains to localize to tyrosine phosphorylated
sites.
Length = 102
Score = 30.4 bits (68), Expect = 0.42
Identities = 28/102 (27%), Positives = 48/102 (47%), Gaps = 4/102 (3%)
Query: 240 TSCSFYWGKMDRYEAEKLLESWPEGTFLLRDSAQEEYLFSVSFRKFGRSLHARIEQWNHK 299
+ +++ G + R EAE+LLE P+G +L+R S + F +++R H + Q
Sbjct: 5 AAPAWFHGFITRREAERLLEPKPQGCYLVRFS-ESAVTFVLTYRSRTCCRHFLLAQLRDG 63
Query: 300 FSFDSHDPNVYASPTVCGLIEHYKDPTLVMFFEPMLTIPLHR 341
+ + +A + L+ HY L + E LT PL R
Sbjct: 64 RHVVLGEDSAHAR--LQDLLLHYTAHPLSPYGE-TLTEPLAR 102
>gnl|CDD|198199 cd09946, SH2_HSH2_like, Src homology 2 domain found in
hematopoietic SH2 (HSH2) protein. HSH2 is thought to
function as an adapter protein involved in tyrosine
kinase signaling. It may also be involved in regulating
cytokine signaling and cytoskeletal reorganization in
hematopoietic cells. HSH2 contains several putative
protein-binding motifs, SH3-binding proline-rich
regions, and phosphotyrosine sites, but lacks enzymatic
motifs. HSH2 was found to interact with
cytokine-regulated tyrosine kinase c-FES and an
activated Cdc42-associated tyrosine kinase ACK1. HSH2
binds c-FES through both its C-terminal region and its
N-terminal region including the SH2 domain and binds
ACK1 via its N-terminal proline-rich region. Both
kinases bound and tyrosine-phosphorylated HSH2 in
mammalian cells. In general SH2 domains are involved in
signal transduction. They typically bind pTyr-containing
ligands via two surface pockets, a pTyr and hydrophobic
binding pocket, allowing proteins with SH2 domains to
localize to tyrosine phosphorylated sites.
Length = 102
Score = 30.6 bits (69), Expect = 0.42
Identities = 15/47 (31%), Positives = 26/47 (55%), Gaps = 1/47 (2%)
Query: 244 FYWGKMDRYEAEKLLESWPEGTFLLRDSAQEEYLFSVSFRKFGRSLH 290
++ G + R AE +LES P G+FL+R S +++S++ H
Sbjct: 9 WFHGAISREAAENMLESQPLGSFLIRVS-HSHVGYTLSYKAQSSCRH 54
>gnl|CDD|239688 cd03718, SOCS_SSB1_4, SOCS (suppressors of cytokine signaling) box
of SSB1 and SSB4 (SPRY domain-containing SOCS box
proteins)-like proteins. SSB proteins contain a central
SPRY domain and a C-terminal SOCS. SSB1 and SSB4 has
been shown to bind to MET, the receptor protein-tyrosine
kinase for hepatocyte growth factor (HGF) and also
interacts with prostate apoptosis response protein-4.
Both types of interactions are mediated through the SPRY
domain. The general function of the SOCS box is the
recruitment of the ubiquitin-transferase system. The
SOCS box interacts with Elongins B and C, Cullin-5 or
Cullin-2, Rbx-1, and E2. Therefore, SOCS-box-containing
proteins probably function as E3 ubiquitin ligases and
mediate the degradation of proteins associated through
their N-terminal regions.
Length = 42
Score = 28.8 bits (65), Expect = 0.45
Identities = 14/35 (40%), Positives = 19/35 (54%), Gaps = 3/35 (8%)
Query: 346 PLQHICRSVICSNISYD---GISQLQLPKTLKSYL 377
PL +CR + + D I QL LP +LK+YL
Sbjct: 5 PLMDLCRRRVRVALGRDRLEEIEQLPLPPSLKNYL 39
>gnl|CDD|239714 cd03745, SOCS_WSB2_SWIP2, SOCS (suppressors of cytokine signaling)
box of WSB2/SWiP2-like proteins. This family consists of
WSB-2 (SOCS-box-containing WD-40 protein) and SWiP-2
(SOCS box and WD-repeats in Protein). No functional
information is available for WSB2 or SWiP-2, but limited
information is available for the isoforms WSB-1 and
SWiP-1. The general function of the SOCS box is the
recruitment of the ubiquitin-transferase system. The
SOCS box interacts with Elongins B and C, Cullin-5 or
Cullin-2, Rbx-1, and E2. Therefore, SOCS-box-containing
proteins probably function as E3 ubiquitin ligases and
mediate the degradation of proteins associated through
their N-terminal regions.
Length = 39
Score = 28.3 bits (63), Expect = 0.76
Identities = 9/31 (29%), Positives = 18/31 (58%)
Query: 347 LQHICRSVICSNISYDGISQLQLPKTLKSYL 377
L+H+CR + ++ + L +PK +K +L
Sbjct: 6 LRHLCRKALRHFLTTYQVLALPIPKKMKEFL 36
>gnl|CDD|165485 PHA03222, PHA03222, single-stranded binding protein UL29;
Provisional.
Length = 337
Score = 31.1 bits (70), Expect = 0.93
Identities = 15/37 (40%), Positives = 23/37 (62%)
Query: 256 KLLESWPEGTFLLRDSAQEEYLFSVSFRKFGRSLHAR 292
KL+ WPE LL +AQ+ L +++ R+F R L+ R
Sbjct: 210 KLILIWPENHHLLVANAQDLELSAIAIRRFQRFLYGR 246
>gnl|CDD|198175 cd09919, SH2_STAT_family, Src homology 2 (SH2) domain found in
signal transducer and activator of transcription (STAT)
family. STAT proteins mediate the signaling of
cytokines and a number of growth factors from the
receptors of these extracellular signaling molecules to
the cell nucleus. STATs are specifically phosphorylated
by receptor-associated Janus kinases, receptor tyrosine
kinases, or cytoplasmic tyrosine kinases. The
phosphorylated STAT molecules dimerize by reciprocal
binding of their SH2 domains to the phosphotyrosine
residues. These dimeric STATs translocate into the
nucleus, bind to specific DNA sequences, and regulate
the transcription of their target genes. However there
are a number of unphosphorylated STATs that travel
between the cytoplasm and nucleus and some STATs that
exist as dimers in unstimulated cells that can exert
biological functions independent of being activated by a
receptor. There are seven mammalian STAT family members
which have been identified: STAT1, STAT2, STAT3, STAT4,
STAT5 (STAT5A and STAT5B), and STAT6. There are 6
conserved domains in STAT: N-terminal domain (NTD),
coiled-coil domain (CCD), DNA-binding domain (DBD),
alpha-helical linker domain (LD), SH2 domain, and
transactivation domain (TAD). NTD is involved in
dimerization of unphosphorylated STATs monomers and for
the tetramerization between STAT1, STAT3, STAT4 and
STAT5 on promoters with two or more tandem STAT binding
sites. It also plays a role in promoting interactions
with transcriptional co-activators such as CREB binding
protein (CBP)/p300, as well as being important for
nuclear import and deactivation of STATs involving
tyrosine de-phosphorylation. The CCD interacts with
other proteins, such as IFN regulatory protein 9
(IRF-9/p48) with STAT1 and c-JUN with STAT3 and is also
thought to participate in the negative regulation of
these proteins. Distinct genes are bound to STATs via
their DBD domain. This domain is also involved in
nuclear translocation of activated STAT1 and STAT3
phosphorylated dimers upon cytokine stimulation. LD
links the DNA-binding and SH2 domains and is important
for the transcriptional activation of STAT1 in response
to IFN-gamma. It also plays a role in protein-protein
interactions and has also been implicated in the
constitutive nucleocytoplasmic shuttling of
unphosphorylated STATs in resting cells. The SH2 domain
is necessary for receptor association and tyrosine
phosphodimer formation. Residues within this domain may
be particularly important for some cellular functions
mediated by the STATs as well as residues adjacent to
this domain. The TAD interacts with several proteins,
namely minichromosome maintenance complex component 5
(MCM5), breast cancer 1 (BRCA1) and CBP/p300. TAD also
contains a modulatory phosphorylation site that
regulates STAT activity and is necessary for maximal
transcription of a number of target genes. The conserved
tyrosine residue present in the C-terminus is crucial
for dimerization via interaction with the SH2 domain
upon the interaction of the ligand with the receptor.
STAT activation by tyrosine phosphorylation also
determines nuclear import and retention, DNA binding to
specific DNA elements in the promoters of responsive
genes, and transcriptional activation of STAT dimers. In
addition to the SH2 domain there is a coiled-coil
domain, a DNA binding domain, and a transactivation
domain in the STAT proteins. In general SH2 domains are
involved in signal transduction. They typically bind
pTyr-containing ligands via two surface pockets, a pTyr
and hydrophobic binding pocket, allowing proteins with
SH2 domains to localize to tyrosine phosphorylated
sites.
Length = 115
Score = 29.9 bits (68), Expect = 0.96
Identities = 14/26 (53%), Positives = 17/26 (65%)
Query: 246 WGKMDRYEAEKLLESWPEGTFLLRDS 271
G + + EAE LL+ P GTFLLR S
Sbjct: 23 MGFISKEEAEDLLKKKPPGTFLLRFS 48
>gnl|CDD|198216 cd10353, SH2_Nterm_RasGAP, N-terminal Src homology 2 (SH2) domain
found in Ras GTPase-activating protein 1 (GAP). RasGAP
is part of the GAP1 family of GTPase-activating
proteins. The protein is located in the cytoplasm and
stimulates the GTPase activity of normal RAS p21, but
not its oncogenic counterpart. Acting as a suppressor of
RAS function, the protein enhances the weak intrinsic
GTPase activity of RAS proteins resulting in RAS
inactivation, thereby allowing control of cellular
proliferation and differentiation. Mutations leading to
changes in the binding sites of either protein are
associated with basal cell carcinomas. Alternative
splicing results in two isoforms. The shorter isoform
which lacks the N-terminal hydrophobic region, has the
same activity, and is expressed in placental tissues. In
general the longer isoform contains 2 SH2 domains, a SH3
domain, a pleckstrin homology (PH) domain, and a
calcium-dependent phospholipid-binding C2 domain. The
C-terminus contains the catalytic domain of RasGap which
catalyzes the activation of Ras by hydrolyzing GTP-bound
active Ras into an inactive GDP-bound form of Ras. This
model contains the N-terminal SH2 domain. In general SH2
domains are involved in signal transduction. They
typically bind pTyr-containing ligands via two surface
pockets, a pTyr and hydrophobic binding pocket, allowing
proteins with SH2 domains to localize to tyrosine
phosphorylated sites.
Length = 103
Score = 29.4 bits (66), Expect = 1.0
Identities = 17/51 (33%), Positives = 29/51 (56%), Gaps = 1/51 (1%)
Query: 244 FYWGKMDRYEAE-KLLESWPEGTFLLRDSAQEEYLFSVSFRKFGRSLHARI 293
+Y G++DR AE +L ++ G++L+R+S + F +SF H RI
Sbjct: 21 WYHGRLDRTIAEERLRQAGKLGSYLIRESDRRPGSFVLSFLSRTGVNHFRI 71
>gnl|CDD|198197 cd09944, SH2_Grb7_family, Src homology 2 (SH2) domain found in the
growth factor receptor bound, subclass 7 (Grb7)
proteins. The Grb family binds to the epidermal growth
factor receptor (EGFR, erbB1) via their SH2 domains.
There are 3 members of the Grb7 family of proteins:
Grb7, Grb10, and Grb14. They are composed of an
N-terminal Proline-rich domain, a Ras Associating-like
(RA) domain, a Pleckstrin Homology (PH) domain, a
phosphotyrosine interaction region (PIR, BPS) and a
C-terminal SH2 domain. The SH2 domains of Grb7, Grb10
and Grb14 preferentially bind to a different RTK. Grb7
binds strongly to the erbB2 receptor, unlike Grb10 and
Grb14 which bind weakly to it. Grb14 binds to Fibroblast
Growth Factor Receptor (FGFR). Grb10 has been shown to
interact with many different proteins, including the
insulin and IGF1 receptors, platelet-derived growth
factor (PDGF) receptor-beta, Ret, Kit, Raf1 and MEK1,
and Nedd4. Grb7 family proteins are phosphorylated on
serine/threonine as well as tyrosine residues. In
general SH2 domains are involved in signal transduction.
They typically bind pTyr-containing ligands via two
surface pockets, a pTyr and hydrophobic binding pocket,
allowing proteins with SH2 domains to localize to
tyrosine phosphorylated sites.
Length = 108
Score = 29.3 bits (66), Expect = 1.2
Identities = 14/52 (26%), Positives = 26/52 (50%), Gaps = 2/52 (3%)
Query: 244 FYWGKMDRYEAEKLLESW--PEGTFLLRDSAQEEYLFSVSFRKFGRSLHARI 293
++ G + R EA +L+ +G FL+R+S F +S + + H +I
Sbjct: 7 WFHGGISRDEAARLIRQQGLVDGVFLVRESQSNPGAFVLSLKHGQKIKHYQI 58
>gnl|CDD|239712 cd03743, SOCS_SSB4, SOCS (suppressors of cytokine signaling) box of
SSB4 (SPRY domain-containing SOCS box proteins)-like
proteins. SSB proteins contain a central SPRY domain and
a C-terminal SOCS. SSB4 has been shown to bind to MET,
the receptor protein-tyrosine kinase for hepatocyte
growth factor (HGF). SSB4, like SSB2 and SSB1, also
interacts with prostate apoptosis response protein-4.
Both types of interactions are mediated through the SPRY
domain. The general function of the SOCS box is the
recruitment of the ubiquitin-transferase system. The
SOCS box interacts with Elongins B and C, Cullin-5 or
Cullin-2, Rbx-1, and E2. Therefore, SOCS-box-containing
proteins probably function as E3 ubiquitin ligases and
mediate the degradation of proteins associated through
their N-terminal regions.
Length = 42
Score = 27.6 bits (61), Expect = 1.3
Identities = 12/37 (32%), Positives = 19/37 (51%), Gaps = 3/37 (8%)
Query: 345 FPLQHICRSVICSNISYDGISQLQ---LPKTLKSYLK 378
PL +CR + + +Q LP+TLK+YL+
Sbjct: 4 LPLMDLCRRSARQALGRHRLHHIQSLPLPQTLKNYLQ 40
>gnl|CDD|198253 cd10390, SH2_SHD, Src homology 2 domain found in SH2
domain-containing adapter proteins D (SHD). The
expression of SHD is restricted to the brain. SHD may be
a physiological substrate of c-Abl and may function as
an adapter protein in the central nervous system. It is
also thought to be involved in apoptotic regulation. SHD
contains five YXXP motifs, a substrate sequence
preferred by Abl tyrosine kinases, in addition to a
poly-proline rich region and a C-terminal SH2 domain. In
general SH2 domains are involved in signal transduction.
They typically bind pTyr-containing ligands via two
surface pockets, a pTyr and hydrophobic binding pocket,
allowing proteins with SH2 domains to localize to
tyrosine phosphorylated sites.
Length = 98
Score = 28.9 bits (64), Expect = 1.4
Identities = 22/80 (27%), Positives = 36/80 (45%), Gaps = 4/80 (5%)
Query: 244 FYWGKMDRYEAEKLLESWPEGTFLLRDSAQEEYLFSVSFRKFGRSLHARIEQW-NHKFSF 302
++ G + R +AE LL EG++L+R S S+S R LH + + ++
Sbjct: 3 WFHGPLSRADAENLLSLCKEGSYLVRLSETRPQDCSLSLRSSQGFLHLKFARTRENQVVL 62
Query: 303 DSHDPNVYASPTVCGLIEHY 322
H P+V L+ HY
Sbjct: 63 GQHSGPF---PSVPELVLHY 79
>gnl|CDD|198259 cd10396, SH2_Tec_Itk, Src homology 2 (SH2) domain found in Tec
protein, IL2-inducible T-cell kinase (Itk). A member of
the Tec protein tyrosine kinase Itk is expressed thymus,
spleen, lymph node, T lymphocytes, NK and mast cells. It
plays a role in T-cell proliferation and
differentiation, analogous to Tec family kinases Txk.
Itk has been shown to interact with Fyn,
Wiskott-Aldrich syndrome protein, KHDRBS1, PLCG1,
Lymphocyte cytosolic protein 2, Linker of activated T
cells, Karyopherin alpha 2, Grb2, and Peptidylprolyl
isomerase A. Most of the Tec family members have a PH
domain (Txk and the short (type 1) splice variant of
Drosophila Btk29A are exceptions), a Tec homology (TH)
domain, a SH3 domain, a SH2 domain, and a protein kinase
catalytic domain. The TH domain consists of a
Zn2+-binding Btk motif and a proline-rich region. The
Btk motif is found in Tec kinases, Ras GAP, and IGBP. It
is crucial for the function of Tec PH domains and it's
lack of presence in Txk is not surprising since it lacks
a PH domain. The type 1 splice form of the Drosophila
homolog also lacks both the PH domain and the Btk motif.
The proline-rich regions are highly conserved for the
most part with the exception of Bmx whose residues
surrounding the PXXP motif are not conserved (TH-like)
and Btk29A which is entirely unique with large numbers
of glycine residues (TH-extended). Tec family members
all lack a C-terminal tyrosine having an autoinhibitory
function in its phosphorylated state. In general SH2
domains are involved in signal transduction. They
typically bind pTyr-containing ligands via two surface
pockets, a pTyr and hydrophobic binding pocket, allowing
proteins with SH2 domains to localize to tyrosine
phosphorylated sites.
Length = 108
Score = 29.0 bits (65), Expect = 1.7
Identities = 23/62 (37%), Positives = 37/62 (59%), Gaps = 3/62 (4%)
Query: 245 YWGKMDRYEAEKLL-ESWPEGTFLLRDSAQEEYLFSVS-FRKFGRSLHARIEQWNHKFSF 302
Y ++R +AEKLL + EG F++RDS+Q L++VS + K G + I ++ K +
Sbjct: 9 YNKNINRSKAEKLLRDEGKEGGFMVRDSSQPG-LYTVSLYTKAGGEGNPCIRHYHIKETN 67
Query: 303 DS 304
DS
Sbjct: 68 DS 69
>gnl|CDD|239702 cd03733, SOCS_WSB_SWIP, SOCS (suppressors of cytokine signaling)
box of WSB/SWiP-like proteins. This subfamily contains
WSB-1 (SOCS-box-containing WD-40 protein), part of an E3
ubiquitin ligase for the thyroid-hormone-activating type
2 iodothyronine deiodinase (D2), and SWiP-1 (SOCS box
and WD-repeats in Protein), a WD40-containing protein
that is expressed in embryonic structures of chickens
and regulated by Sonic Hedgehog (Shh), as well as, their
isoforms WSB-2 and SWiP-2. The general function of the
SOCS box is the recruitment of the ubiquitin-transferase
system. The SOCS box interacts with Elongins B and C,
Cullin-5 or Cullin-2, Rbx-1, and E2. Therefore,
SOCS-box-containing proteins probably function as E3
ubiquitin ligases and mediate the degradation of
proteins associated through their N-terminal regions.
Length = 39
Score = 27.0 bits (60), Expect = 2.0
Identities = 10/31 (32%), Positives = 18/31 (58%)
Query: 347 LQHICRSVICSNISYDGISQLQLPKTLKSYL 377
LQH+CR + ++ + L +PK +K +L
Sbjct: 6 LQHLCRMALRRVMTTQQVLALPIPKKMKEFL 36
>gnl|CDD|182361 PRK10294, PRK10294, 6-phosphofructokinase 2; Provisional.
Length = 309
Score = 29.8 bits (67), Expect = 2.2
Identities = 10/31 (32%), Positives = 17/31 (54%), Gaps = 1/31 (3%)
Query: 198 LPPELSMDNLTALFQCALTQ-LETVVHTSVD 227
LPP + ++ LT L A Q + ++ +S D
Sbjct: 140 LPPGVKLEKLTQLISAAQKQGIRCIIDSSGD 170
>gnl|CDD|198188 cd09934, SH2_Tec_family, Src homology 2 (SH2) domain found in
Tec-like proteins. The Tec protein tyrosine kinase is
the founding member of a family that includes Btk, Itk,
Bmx, and Txk. The members have a PH domain, a
zinc-binding motif, a SH3 domain, a SH2 domain, and a
protein kinase catalytic domain. Btk is involved in
B-cell receptor signaling with mutations in Btk
responsible for X-linked agammaglobulinemia (XLA) in
humans and X-linked immunodeficiency (xid) in mice. Itk
is involved in T-cell receptor signaling. Tec is
expressed in both T and B cells, and is thought to
function in activated and effector T lymphocytes to
induce the expression of genes regulated by NFAT
transcription factors. In general SH2 domains are
involved in signal transduction. They typically bind
pTyr-containing ligands via two surface pockets, a pTyr
and hydrophobic binding pocket, allowing proteins with
SH2 domains to localize to tyrosine phosphorylated
sites.
Length = 104
Score = 28.1 bits (63), Expect = 3.1
Identities = 13/30 (43%), Positives = 18/30 (60%), Gaps = 1/30 (3%)
Query: 245 YWGKMDRYEAEKLL-ESWPEGTFLLRDSAQ 273
Y G M R AE LL + EG F++R+S+
Sbjct: 9 YVGDMSRQRAESLLKQEDKEGCFVVRNSST 38
>gnl|CDD|198263 cd10400, SH2_SAP1a, Src homology 2 (SH2) domain found in
SLAM-associated protein (SAP) 1a. The X-linked
lymphoproliferative syndrome (XLP) gene encodes SAP
(also called SH2D1A/DSHP) a protein that consists of a 5
residue N-terminus, a single SH2 domain, and a short 25
residue C-terminal tail. XLP is characterized by an
extreme sensitivity to Epstein-Barr virus. Both T and
natural killer (NK) cell dysfunctions have been seen in
XLP patients. SAP binds the cytoplasmic tail of
Signaling lymphocytic activation molecule (SLAM), 2B4,
Ly-9, and CD84. SAP is believed to function as a
signaling inhibitor, by blocking or regulating binding
of other signaling proteins. SAP and the SAP-like
protein EAT-2 recognize the sequence motif TIpYXX[VI],
which is found in the cytoplasmic domains of a
restricted number of T, B, and NK cell surface receptors
and are proposed to be natural inhibitors or regulators
of the physiological role of a small family of receptors
on the surface of these cells. In general SH2 domains
are involved in signal transduction. They typically bind
pTyr-containing ligands via two surface pockets, a pTyr
and hydrophobic binding pocket, allowing proteins with
SH2 domains to localize to tyrosine phosphorylated
sites.
Length = 103
Score = 27.9 bits (62), Expect = 3.3
Identities = 14/32 (43%), Positives = 21/32 (65%), Gaps = 1/32 (3%)
Query: 241 SCSFYWGKMDRYEAEKLL-ESWPEGTFLLRDS 271
+ + Y GK+ R EKLL + +G++LLRDS
Sbjct: 2 AVAVYHGKISRETGEKLLLAAGLDGSYLLRDS 33
>gnl|CDD|198270 cd10407, SH2_Vav3, Src homology 2 (SH2) domain found in the Vav3
proteins. Proto-oncogene vav is a member of the Dbl
family of guanine nucleotide exchange factors (GEF) for
the Rho family of GTP binding proteins. All vavs are
activated by tyrosine phosphorylation leading to their
activation. There are three Vav mammalian family
members: Vav1 which is expressed in the hematopoietic
system, and Vav2 and Vav3 are more ubiquitously
expressed. Vav3 preferentially activates RhoA, RhoG and,
to a lesser extent, Rac1. Alternatively spliced
transcript variants encoding different isoforms have
been described for this gene. VAV3 has been shown to
interact with Grb2. Vav proteins are involved in several
processes that require cytoskeletal reorganization, such
as the formation of the immunological synapse (IS),
phagocytosis, platelet aggregation, spreading, and
transformation. Vavs function as guanine nucleotide
exchange factors (GEFs) for the Rho/Rac family of
GTPases. Vav family members have several conserved
motifs/domains including: a leucine-rich region, a
leucine-zipper, a calponin homology (CH) domain, an
acidic domain, a Dbl-homology (DH) domain, a pleckstrin
homology (PH) domain, a cysteine-rich domain, 2 SH3
domains, a proline-rich region, and a SH2 domain. Vavs
are the only known Rho GEFs that have both the DH/PH
motifs and SH2/SH3 domains in the same protein. The
leucine-rich helix-loop-helix (HLH) domain is thought to
be involved in protein heterodimerization with other HLH
proteins and it may function as a negative regulator by
forming inactive heterodimers. The CH domain is usually
involved in the association with filamentous actin, but
in Vav it controls NFAT stimulation, Ca2+ mobilization,
and its transforming activity. Acidic domains are
involved in protein-protein interactions and contain
regulatory tyrosines. The DH domain is a GDP-GTP
exchange factor on Rho/Rac GTPases. The PH domain in
involved in interactions with GTP-binding proteins,
lipids and/or phosphorylated serine/threonine residues.
The SH3 domain is involved in localization of proteins
to specific sites within the cell interacting with
protein with proline-rich sequences. The SH2 domain
mediates a high affinity interaction with tyrosine
phosphorylated proteins. In general SH2 domains are
involved in signal transduction. They typically bind
pTyr-containing ligands via two surface pockets, a pTyr
and hydrophobic binding pocket, allowing proteins with
SH2 domains to localize to tyrosine phosphorylated
sites.
Length = 103
Score = 28.0 bits (62), Expect = 3.3
Identities = 15/56 (26%), Positives = 28/56 (50%)
Query: 238 DITSCSFYWGKMDRYEAEKLLESWPEGTFLLRDSAQEEYLFSVSFRKFGRSLHARI 293
D + +Y G M+R +AE L + T+L+R +E +++S + H +I
Sbjct: 1 DYSCQPWYAGAMERLQAETELINRVNSTYLVRHRTKESGEYAISIKYNNEVKHIKI 56
>gnl|CDD|198262 cd10399, SH2_Tec_Bmx, Src homology 2 (SH2) domain found in Tec
protein, Bmx. A member of the Tec protein tyrosine
kinase Bmx is expressed in the endothelium of large
arteries, fetal endocardium, adult endocardium of the
left ventricle, bone marrow, lung, testis, granulocytes,
myeloid cell lines, and prostate cell lines. Bmx is
involved in the regulation of Rho and serum response
factor (SRF). Bmx has been shown to interact with PAK1,
PTK2, PTPN21, and RUFY1. Most of the Tec family members
have a PH domain (Txk and the short (type 1) splice
variant of Drosophila Btk29A are exceptions), a Tec
homology (TH) domain, a SH3 domain, a SH2 domain, and a
protein kinase catalytic domain. The TH domain consists
of a Zn2+-binding Btk motif and a proline-rich region.
The Btk motif is found in Tec kinases, Ras GAP, and
IGBP. It is crucial for the function of Tec PH domains.
It is not present in Txk and the type 1 splice form of
the Drosophila homolog. The proline-rich regions are
highly conserved for the most part with the exception of
Bmx whose residues surrounding the PXXP motif are not
conserved (TH-like) and Btk29A which is entirely unique
with large numbers of glycine residues (TH-extended).
Tec family members all lack a C-terminal tyrosine having
an autoinhibitory function in its phosphorylated state.
In general SH2 domains are involved in signal
transduction. They typically bind pTyr-containing
ligands via two surface pockets, a pTyr and hydrophobic
binding pocket, allowing proteins with SH2 domains to
localize to tyrosine phosphorylated sites.
Length = 106
Score = 28.0 bits (62), Expect = 3.3
Identities = 15/48 (31%), Positives = 27/48 (56%), Gaps = 3/48 (6%)
Query: 243 SFYWGKMDRYEAEKLL-ESWPEGTFLLRDSAQE-EYLFSVSFRKFGRS 288
++ G + R ++E+LL + EG F++R+S+Q Y S+ F K
Sbjct: 7 DWFAGNISRSQSEQLLRQKGKEGAFMVRNSSQVGMYTVSL-FSKAVND 53
>gnl|CDD|236689 PRK10419, nikE, nickel transporter ATP-binding protein NikE;
Provisional.
Length = 268
Score = 28.9 bits (65), Expect = 4.5
Identities = 12/39 (30%), Positives = 16/39 (41%), Gaps = 6/39 (15%)
Query: 165 DCDERARIERAREIAEGVDPPPGFRPKHIQIVNLPPELS 203
D+ R+ RA E+ VD K PP+LS
Sbjct: 121 SLDKAERLARASEMLRAVDLDDSVLDK------RPPQLS 153
>gnl|CDD|178450 PLN02859, PLN02859, glutamine-tRNA ligase.
Length = 788
Score = 29.0 bits (65), Expect = 5.4
Identities = 13/36 (36%), Positives = 19/36 (52%), Gaps = 11/36 (30%)
Query: 222 VHTSVDYIHCLVPDLKDITS--C---------SFYW 246
++ S DY HC+V L++IT C S+YW
Sbjct: 440 IYPSYDYAHCIVDSLENITHSLCTLEFETRRASYYW 475
>gnl|CDD|112562 pfam03753, HHV6-IE, Human herpesvirus 6 immediate early protein.
The proteins in this family are poorly characterized,
but an investigation has indicated that the immediate
early protein is required the down-regulation of MHC
class I expression in dendritic cells. Human herpesvirus
6 immediate early protein is also referred to as U90.
Length = 993
Score = 28.9 bits (64), Expect = 6.0
Identities = 32/135 (23%), Positives = 55/135 (40%), Gaps = 17/135 (12%)
Query: 13 NSADGDNMDKHSQDNKSKKNKDKVEDNEPSCSSNDCTDEIGRIMQDKYGGSDQGLNNTPS 72
+ DG N+ K SQ K K++ +E S S+DCT E + Y D+ +NN
Sbjct: 699 DEEDGFNIIKKSQLKKKIKSE---LKSESSSESDDCTSEDNELHLSDY---DKVINN--- 749
Query: 73 TSSCKHKKQSRTVRSSKVYSASCSKKKKNNWVLKFSCA--RSKNNSVDTSPCVCTAYKRV 130
+C+ K V + + S + + +V K + K + VD C + K+
Sbjct: 750 -GNCESKGFPSPVFTIPIRSMRGTHGIRVKFVPKKNWLWFMRKTHKVDN--CPIHSSKKD 806
Query: 131 SDSEVNDLPDSTQSR 145
+ D T++
Sbjct: 807 ---NNKEDSDGTEAS 818
>gnl|CDD|198261 cd10398, SH2_Tec_Txk, Src homology 2 (SH2) domain found in Tec
protein, Txk. A member of the Tec protein tyrosine
kinase Txk is expressed in thymus, spleen, lymph node, T
lymphocytes, NK cells, mast cell lines, and myeloid cell
line. Txk plays a role in TCR signal transduction, T
cell development, and selection which is analogous to
the function of Itk. Txk has been shown to interact with
IFN-gamma. Unlike most of the Tec family members Txk
lacks a PH domain. Instead Txk has a unique region
containing a palmitoylated cysteine string which has a
similar membrane tethering function as the PH domain.
Txk also has a zinc-binding motif, a SH3 domain, a SH2
domain, and a protein kinase catalytic domain. The TH
domain consists of a Zn2+-binding Btk motif and a
proline-rich region. The Btk motif is found in Tec
kinases, Ras GAP, and IGBP and crucial to the function
of the PH domain. It is not present in Txk which is not
surprising since it lacks a PH domain. The type 1 splice
form of the Drosophila homolog also lacks both the PH
domain and the Btk motif. The proline-rich regions are
highly conserved for the most part with the exception of
Bmx whose residues surrounding the PXXP motif are not
conserved (TH-like) and Btk29A which is entirely unique
with large numbers of glycine residues (TH-extended).
Tec family members all lack a C-terminal tyrosine having
an autoinhibitory function in its phosphorylated state.
In general SH2 domains are involved in signal
transduction. They typically bind pTyr-containing
ligands via two surface pockets, a pTyr and hydrophobic
binding pocket, allowing proteins with SH2 domains to
localize to tyrosine phosphorylated sites.
Length = 106
Score = 27.2 bits (60), Expect = 7.3
Identities = 21/58 (36%), Positives = 31/58 (53%), Gaps = 3/58 (5%)
Query: 244 FYWGKMDRYEAEKLL-ESWPEGTFLLRDSAQE-EYLFSVSFRKFGRSLHARIEQWNHK 299
+Y + R +AE+LL + EG F++RDS Y SV F + RS A I+ + K
Sbjct: 8 WYHKNITRNQAERLLRQESKEGAFIVRDSRHLGSYTISV-FTRARRSTEASIKHYQIK 64
>gnl|CDD|131707 TIGR02659, TTQ_MADH_Lt, methylamine dehydrogenase (amicyanin) light
chain. This family consists of the light chain of
methylamine dehydrogenase light chain, a periplasmic
enzyme. This subunit contains a tryptophan
tryptophylquinone (TTQ) prothetic group derived from
Trp-114 and Trp-165 of the precursor, numbered according
to the sequence from Paracoccus denitrificans. The
enzyme forms a complex with the type I blue copper
protein amicyanin and cytochrome. Electron transfer
procedes from TQQ to the copper and then to the heme
group of the cytochrome [Energy metabolism, Amino acids
and amines].
Length = 186
Score = 28.0 bits (62), Expect = 7.5
Identities = 9/25 (36%), Positives = 13/25 (52%)
Query: 167 DERARIERAREIAEGVDPPPGFRPK 191
D R R+ RA G DP ++P+
Sbjct: 47 DRRGRVSRANAATTGNDPRAKWKPQ 71
>gnl|CDD|218330 pfam04925, SHQ1, SHQ1 protein. S. cerevisiae SHQ1 protein is
required for SnoRNAs of the box H/ACA Quantitative
accumulation (unpublished).
Length = 185
Score = 27.6 bits (62), Expect = 9.2
Identities = 14/34 (41%), Positives = 17/34 (50%), Gaps = 3/34 (8%)
Query: 312 SPTVCGLIEH--YKDPTLVMFFEPMLTIPLHRNF 343
SP + L KD L+ F LT PL+RNF
Sbjct: 72 SPQLSWLDSFSNVKD-ALIAFIRRALTYPLYRNF 104
>gnl|CDD|175989 cd04022, C2A_MCTP_PRT_plant, C2 domain first repeat found in
Multiple C2 domain and Transmembrane region Proteins
(MCTP); plant subset. MCTPs are involved in Ca2+
signaling at the membrane. Plant-MCTPs are composed of
a variable N-terminal sequence, four C2 domains, two
transmembrane regions (TMRs), and a short C-terminal
sequence. It is one of four protein classes that are
anchored to membranes via a transmembrane region; the
others being synaptotagmins, extended synaptotagmins,
and ferlins. MCTPs are the only membrane-bound C2 domain
proteins that contain two functional TMRs. MCTPs are
unique in that they bind Ca2+ but not phospholipids. C2
domains fold into an 8-standed beta-sandwich that can
adopt 2 structural arrangements: Type I and Type II,
distinguished by a circular permutation involving their
N- and C-terminal beta strands. Many C2 domains are
Ca2+-dependent membrane-targeting modules that bind a
wide variety of substances including bind phospholipids,
inositol polyphosphates, and intracellular proteins.
Most C2 domain proteins are either signal transduction
enzymes that contain a single C2 domain, such as protein
kinase C, or membrane trafficking proteins which contain
at least two C2 domains, such as synaptotagmin 1.
However, there are a few exceptions to this including
RIM isoforms and some splice variants of piccolo/aczonin
and intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. This cd contains the first C2
repeat, C2A, and has a type-II topology.
Length = 127
Score = 26.9 bits (60), Expect = 9.8
Identities = 6/15 (40%), Positives = 8/15 (53%)
Query: 295 QWNHKFSFDSHDPNV 309
WN K F+ DP+
Sbjct: 46 VWNEKLVFNVSDPSR 60
>gnl|CDD|222608 pfam14226, DIOX_N, non-haem dioxygenase in morphine synthesis
N-terminal. This is the highly conserved N-terminal
region of proteins with 2-oxoglutarate/Fe(II)-dependent
dioxygenase activity.
Length = 113
Score = 26.8 bits (60), Expect = 9.9
Identities = 20/66 (30%), Positives = 25/66 (37%), Gaps = 21/66 (31%)
Query: 148 LPVIDFSKFNPDDYSTEDCDERARIERA-REIAEGVDPPPGFRPKHIQIVN--LPPELSM 204
+PVID S D A + A RE GF Q+VN +P EL +
Sbjct: 1 IPVIDLSGDPEDRA-----AVAAELGEACREW--------GF----FQLVNHGIPEEL-I 42
Query: 205 DNLTAL 210
D L
Sbjct: 43 DRLFEA 48
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
0.317 0.132 0.402
Gapped
Lambda K H
0.267 0.0890 0.140
Matrix: BLOSUM62
Gap Penalties: Existence: 11, Extension: 1
Number of Sequences: 44354
Number of Hits to DB: 19,563,371
Number of extensions: 1815510
Number of successful extensions: 1627
Number of sequences better than 10.0: 1
Number of HSP's gapped: 1597
Number of HSP's successfully gapped: 111
Length of query: 395
Length of database: 10,937,602
Length adjustment: 99
Effective length of query: 296
Effective length of database: 6,546,556
Effective search space: 1937780576
Effective search space used: 1937780576
Neighboring words threshold: 11
Window for multiple hits: 40
X1: 16 ( 7.3 bits)
X2: 38 (14.6 bits)
X3: 64 (24.7 bits)
S1: 41 (21.7 bits)
S2: 60 (26.6 bits)