RPS-BLAST 2.2.26 [Sep-21-2011]
Database: CDD.v3.10
44,354 sequences; 10,937,602 total letters
Searching..................................................done
Query= psy8552
(523 letters)
>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 = 206 bits (525), Expect = 6e-65
Identities = 77/109 (70%), Positives = 93/109 (85%)
Query: 209 TNSLRDAEWYWGDISRDDVNDKLADTADGTFLVRDTSTKNGEYTLTLRKGGTNKLIKIFH 268
+SL++AEWYWGDISR++VN+K+ DT DGTFLVRD ST G+YTLTLRKGG NKLIKIFH
Sbjct: 1 PHSLQEAEWYWGDISREEVNEKMRDTPDGTFLVRDASTMKGDYTLTLRKGGNNKLIKIFH 60
Query: 269 RNGRYGFSEPFKFTSVVELINYYKHESLSQYNSTLDTRLLYPVSRFSSD 317
R+G+YGFS+P F SVVELINYY++ SL++YN LD +LLYPVSRF D
Sbjct: 61 RDGKYGFSDPLTFNSVVELINYYRNNSLAEYNRKLDVKLLYPVSRFQQD 109
Score = 78.9 bits (195), Expect = 8e-18
Identities = 28/43 (65%), Positives = 34/43 (79%)
Query: 339 FSEPFKFTSVVELINYYKHESLSQYNSTLDTRLLYPVSRFSSD 381
FS+P F SVVELINYY++ SL++YN LD +LLYPVSRF D
Sbjct: 67 FSDPLTFNSVVELINYYRNNSLAEYNRKLDVKLLYPVSRFQQD 109
Score = 65.0 bits (159), Expect = 6e-13
Identities = 31/92 (33%), Positives = 50/92 (54%), Gaps = 3/92 (3%)
Query: 424 RMSRAQAEALLSGRPDGTFLIRPSTT--GQYALSIVCSGAPKHCLVYETERGFGFAEPFN 481
+SR + + PDGTFL+R ++T G Y L++ G K ++ + +GF++P
Sbjct: 13 DISREEVNEKMRDTPDGTFLVRDASTMKGDYTLTLRKGGNNKLIKIFHRDGKYGFSDPLT 72
Query: 482 IYPSLGALVLHYAANSLEEHNDDLKTTLAYPV 513
+ S+ L+ +Y NSL E+N L L YPV
Sbjct: 73 -FNSVVELINYYRNNSLAEYNRKLDVKLLYPV 103
>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 = 163 bits (415), Expect = 6e-49
Identities = 66/100 (66%), Positives = 80/100 (80%), Gaps = 2/100 (2%)
Query: 418 EKTWLV-RMSRAQAEALLSGRPDGTFLIRPSTT-GQYALSIVCSGAPKHCLVYETERGFG 475
E+TWLV ++R QAE LL G+PDGTFLIR S+T G YA S+VC+G KHC++Y+TE G+G
Sbjct: 5 ERTWLVGDINRTQAEELLRGKPDGTFLIRESSTQGCYACSVVCNGEVKHCVIYKTETGYG 64
Query: 476 FAEPFNIYPSLGALVLHYAANSLEEHNDDLKTTLAYPVFA 515
FAEP+N+Y SL LVLHYA NSLE+HND L TLAYPV A
Sbjct: 65 FAEPYNLYESLKELVLHYAHNSLEQHNDSLTVTLAYPVLA 104
Score = 77.8 bits (192), Expect = 1e-17
Identities = 38/101 (37%), Positives = 56/101 (55%), Gaps = 2/101 (1%)
Query: 212 LRDAEWYWGDISRDDVNDKLADTADGTFLVRDTSTKNGEYTLTLRKGGTNKLIKIFHRNG 271
+ W GDI+R + L DGTFL+R++ST+ G Y ++ G K I+
Sbjct: 3 HDERTWLVGDINRTQAEELLRGKPDGTFLIRESSTQ-GCYACSVVCNGEVKHCVIYKTET 61
Query: 272 RYGFSEPFK-FTSVVELINYYKHESLSQYNSTLDTRLLYPV 311
YGF+EP+ + S+ EL+ +Y H SL Q+N +L L YPV
Sbjct: 62 GYGFAEPYNLYESLKELVLHYAHNSLEQHNDSLTVTLAYPV 102
Score = 42.0 bits (99), Expect = 5e-05
Identities = 17/38 (44%), Positives = 25/38 (65%), Gaps = 1/38 (2%)
Query: 339 FSEPFK-FTSVVELINYYKHESLSQYNSTLDTRLLYPV 375
F+EP+ + S+ EL+ +Y H SL Q+N +L L YPV
Sbjct: 65 FAEPYNLYESLKELVLHYAHNSLEQHNDSLTVTLAYPV 102
>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 = 94.6 bits (236), Expect = 8e-24
Identities = 31/83 (37%), Positives = 47/83 (56%), Gaps = 1/83 (1%)
Query: 216 EWYWGDISRDDVNDKLADTADGTFLVRDTSTKNGEYTLTLRKGGTNKLIKIFH-RNGRYG 274
WY G ISR++ L + DG FLVRD+ + G+Y L++R G K +I +G++
Sbjct: 2 PWYHGFISREEAEKLLKNEGDGDFLVRDSESSPGDYVLSVRVKGKVKHYRIRRNEDGKFY 61
Query: 275 FSEPFKFTSVVELINYYKHESLS 297
KF S+VEL+ +Y+ SL
Sbjct: 62 LEGGRKFPSLVELVEHYQKNSLG 84
Score = 74.2 bits (183), Expect = 1e-16
Identities = 32/77 (41%), Positives = 40/77 (51%), Gaps = 2/77 (2%)
Query: 424 RMSRAQAEALLSGRPDGTFLIRPSTT--GQYALSIVCSGAPKHCLVYETERGFGFAEPFN 481
+SR +AE LL DG FL+R S + G Y LS+ G KH + E G + E
Sbjct: 7 FISREEAEKLLKNEGDGDFLVRDSESSPGDYVLSVRVKGKVKHYRIRRNEDGKFYLEGGR 66
Query: 482 IYPSLGALVLHYAANSL 498
+PSL LV HY NSL
Sbjct: 67 KFPSLVELVEHYQKNSL 83
Score = 31.8 bits (73), Expect = 0.14
Identities = 9/23 (39%), Positives = 13/23 (56%)
Query: 339 FSEPFKFTSVVELINYYKHESLS 361
KF S+VEL+ +Y+ SL
Sbjct: 62 LEGGRKFPSLVELVEHYQKNSLG 84
>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 = 88.9 bits (221), Expect = 2e-21
Identities = 37/97 (38%), Positives = 56/97 (57%), Gaps = 1/97 (1%)
Query: 216 EWYWGDISRDDVNDKLADTADGTFLVRDTSTKNGEYTLTLRKGGTNKLIKIFHR-NGRYG 274
W+ G++ RD ++L + DGT+LVR +Y L+++ G K +KI R +G Y
Sbjct: 6 LWFVGEMERDTAENRLENRPDGTYLVRVRPQGETQYALSIKYNGDVKHMKIEQRSDGLYY 65
Query: 275 FSEPFKFTSVVELINYYKHESLSQYNSTLDTRLLYPV 311
SE F S+VEL+NYY+ SL + + LDT L +P
Sbjct: 66 LSESRHFKSLVELVNYYERNSLGENFAGLDTTLKWPY 102
Score = 70.0 bits (172), Expect = 8e-15
Identities = 40/99 (40%), Positives = 50/99 (50%), Gaps = 3/99 (3%)
Query: 418 EKTWLV-RMSRAQAEALLSGRPDGTFLIRPSTTG--QYALSIVCSGAPKHCLVYETERGF 474
E W V M R AE L RPDGT+L+R G QYALSI +G KH + + G
Sbjct: 4 EFLWFVGEMERDTAENRLENRPDGTYLVRVRPQGETQYALSIKYNGDVKHMKIEQRSDGL 63
Query: 475 GFAEPFNIYPSLGALVLHYAANSLEEHNDDLKTTLAYPV 513
+ + SL LV +Y NSL E+ L TTL +P
Sbjct: 64 YYLSESRHFKSLVELVNYYERNSLGENFAGLDTTLKWPY 102
Score = 47.3 bits (113), Expect = 7e-07
Identities = 17/36 (47%), Positives = 23/36 (63%)
Query: 340 SEPFKFTSVVELINYYKHESLSQYNSTLDTRLLYPV 375
SE F S+VEL+NYY+ SL + + LDT L +P
Sbjct: 67 SESRHFKSLVELVNYYERNSLGENFAGLDTTLKWPY 102
>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 = 78.0 bits (193), Expect = 6e-18
Identities = 30/81 (37%), Positives = 44/81 (54%), Gaps = 4/81 (4%)
Query: 216 EWYWGDISRDDVNDKLADTADGTFLVRDTSTKNGEYTLTLRKGGTNKLIKIFHRNGRYGF 275
WYWG I+R + + LA +GTFLVRD+S ++++ R G +I + NGR+ F
Sbjct: 1 GWYWGGITRYEAEELLAGKPEGTFLVRDSSDSRYLFSVSFRTYGRTLHARIEYSNGRFSF 60
Query: 276 SE----PFKFTSVVELINYYK 292
+F VVELI +Y
Sbjct: 61 DSSDPSVPRFPCVVELIEHYV 81
Score = 49.5 bits (119), Expect = 8e-08
Identities = 25/76 (32%), Positives = 43/76 (56%), Gaps = 7/76 (9%)
Query: 425 MSRAQAEALLSGRPDGTFLIRPSTTGQY--ALSIVCSGAPKHC-LVYETERGFGF-AEPF 480
++R +AE LL+G+P+GTFL+R S+ +Y ++S G H + Y R F F +
Sbjct: 7 ITRYEAEELLAGKPEGTFLVRDSSDSRYLFSVSFRTYGRTLHARIEYSNGR-FSFDSSDP 65
Query: 481 NI--YPSLGALVLHYA 494
++ +P + L+ HY
Sbjct: 66 SVPRFPCVVELIEHYV 81
Score = 30.6 bits (70), Expect = 0.30
Identities = 11/29 (37%), Positives = 12/29 (41%)
Query: 353 NYYKHESLSQYNSTLDTRLLYPVSRFSSD 381
Y S Y TL R+ Y RFS D
Sbjct: 33 RYLFSVSFRTYGRTLHARIEYSNGRFSFD 61
>gnl|CDD|215658 pfam00017, SH2, SH2 domain.
Length = 77
Score = 76.5 bits (189), Expect = 2e-17
Identities = 32/77 (41%), Positives = 44/77 (57%), Gaps = 2/77 (2%)
Query: 217 WYWGDISRDDVNDKL-ADTADGTFLVRDTSTKNGEYTLTLRKGGTNKLIKI-FHRNGRYG 274
WY G ISR++ L DGTFLVR++ +K G+YTL++R G K +I NG Y
Sbjct: 1 WYHGKISREEAERLLLNPKPDGTFLVRESESKPGDYTLSVRDDGRVKHYRIQSLDNGGYY 60
Query: 275 FSEPFKFTSVVELINYY 291
S F S+ EL+ +Y
Sbjct: 61 ISGGVTFNSLPELVEHY 77
Score = 66.8 bits (164), Expect = 5e-14
Identities = 28/74 (37%), Positives = 39/74 (52%), Gaps = 7/74 (9%)
Query: 425 MSRAQAEALL-SGRPDGTFLIRPSTT--GQYALSIVCSGAPKHCLVYETERG--FGFAEP 479
+SR +AE LL + +PDGTFL+R S + G Y LS+ G KH + + G +
Sbjct: 6 ISREEAERLLLNPKPDGTFLVRESESKPGDYTLSVRDDGRVKHYRIQSLDNGGYYISGGV 65
Query: 480 FNIYPSLGALVLHY 493
+ SL LV HY
Sbjct: 66 T--FNSLPELVEHY 77
>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 = 74.3 bits (182), Expect = 2e-16
Identities = 35/94 (37%), Positives = 56/94 (59%)
Query: 217 WYWGDISRDDVNDKLADTADGTFLVRDTSTKNGEYTLTLRKGGTNKLIKIFHRNGRYGFS 276
WY G + R +L + + T+LVR + ++GEY ++++ K IKI R+G + +
Sbjct: 7 WYAGAMERLQAETELINRVNSTYLVRHRTKESGEYAISIKYNNEVKHIKILTRDGFFHIA 66
Query: 277 EPFKFTSVVELINYYKHESLSQYNSTLDTRLLYP 310
E KF S++EL+ YYKH SL + +LDT L +P
Sbjct: 67 ENRKFKSLMELVEYYKHHSLKEGFRSLDTTLQFP 100
Score = 47.7 bits (113), Expect = 6e-07
Identities = 34/90 (37%), Positives = 48/90 (53%), Gaps = 3/90 (3%)
Query: 425 MSRAQAEALLSGRPDGTFLIRPST--TGQYALSIVCSGAPKHCLVYETERGFGFAEPFNI 482
M R QAE L R + T+L+R T +G+YA+SI + KH + + F AE
Sbjct: 12 MERLQAETELINRVNSTYLVRHRTKESGEYAISIKYNNEVKHIKILTRDGFFHIAEN-RK 70
Query: 483 YPSLGALVLHYAANSLEEHNDDLKTTLAYP 512
+ SL LV +Y +SL+E L TTL +P
Sbjct: 71 FKSLMELVEYYKHHSLKEGFRSLDTTLQFP 100
Score = 40.8 bits (95), Expect = 2e-04
Identities = 17/35 (48%), Positives = 24/35 (68%)
Query: 340 SEPFKFTSVVELINYYKHESLSQYNSTLDTRLLYP 374
+E KF S++EL+ YYKH SL + +LDT L +P
Sbjct: 66 AENRKFKSLMELVEYYKHHSLKEGFRSLDTTLQFP 100
>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 = 73.3 bits (180), Expect = 3e-16
Identities = 28/79 (35%), Positives = 41/79 (51%), Gaps = 3/79 (3%)
Query: 216 EWYWGDISRDDVNDKLADTADGTFLVRDTSTKNGEYTLTLR-KGGTNKLIKIFHRNGRYG 274
W+ G ISR++ L DGTFLVR++S++ G+Y L++R G K I G Y
Sbjct: 1 PWFHGSISREEAERLLRGKPDGTFLVRESSSEPGDYVLSVRSGDGKVKHYLIERNEGGYY 60
Query: 275 F--SEPFKFTSVVELINYY 291
F S+ EL+ +Y
Sbjct: 61 LLGGSGRTFPSLPELVEHY 79
Score = 72.5 bits (178), Expect = 5e-16
Identities = 32/74 (43%), Positives = 42/74 (56%), Gaps = 4/74 (5%)
Query: 424 RMSRAQAEALLSGRPDGTFLIRPSTT--GQYALSIVC-SGAPKHCLVYETERGFGFA-EP 479
+SR +AE LL G+PDGTFL+R S++ G Y LS+ G KH L+ E G+
Sbjct: 6 SISREEAERLLRGKPDGTFLVRESSSEPGDYVLSVRSGDGKVKHYLIERNEGGYYLLGGS 65
Query: 480 FNIYPSLGALVLHY 493
+PSL LV HY
Sbjct: 66 GRTFPSLPELVEHY 79
>gnl|CDD|216027 pfam00620, RhoGAP, RhoGAP domain. GTPase activator proteins
towards Rho/Rac/Cdc42-like small GTPases.
Length = 152
Score = 71.4 bits (176), Expect = 9e-15
Identities = 31/96 (32%), Positives = 53/96 (55%), Gaps = 1/96 (1%)
Query: 49 PGNASQVAELFHAY-SGEIKSYNFSKLEPALLAIMLKTYLKSLTEPLIPYVYYEKFVSLL 107
G+AS++ EL A+ SGE + + + ++A +LK +L+ L EPL+ + YE+F+
Sbjct: 25 SGSASRIKELREAFDSGEDVDLDLEEEDVHVVASLLKLFLRELPEPLLTFELYEEFIEAA 84
Query: 108 SGSNDRHIGSRLFALVQDFPAHHFSALRYLMAHLAR 143
++ L L++ P + LRYL+AHL R
Sbjct: 85 KSEDEEERVEALRELLRKLPPANRDTLRYLLAHLNR 120
>gnl|CDD|214618 smart00324, RhoGAP, GTPase-activator protein for Rho-like GTPases.
GTPase activator proteins towards Rho/Rac/Cdc42-like
small GTPases. etter domain limits and outliers.
Length = 174
Score = 71.1 bits (175), Expect = 2e-14
Identities = 33/99 (33%), Positives = 52/99 (52%), Gaps = 1/99 (1%)
Query: 49 PGNASQVAELFHAY-SGEIKSYNFSKLEPALLAIMLKTYLKSLTEPLIPYVYYEKFVSLL 107
G+ S+V EL A+ SG + S+ + +A +LK +L+ L EPLI Y YE+F+
Sbjct: 28 SGSKSRVKELRDAFDSGPDPDLDLSEYDVHDVAGLLKLFLRELPEPLITYELYEEFIEAA 87
Query: 108 SGSNDRHIGSRLFALVQDFPAHHFSALRYLMAHLARMCA 146
++ L L+ P + + LRYL+AHL R+
Sbjct: 88 KLEDETERLRALRELLSLLPPANRATLRYLLAHLNRVAE 126
>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 = 67.2 bits (164), Expect = 8e-14
Identities = 32/76 (42%), Positives = 43/76 (56%), Gaps = 3/76 (3%)
Query: 217 WYWGDISRDDVNDKLADTADGTFLVRDTSTKNGEYTLTLRKGGTNKLIKIFHRNGRYGFS 276
WYWG I+R + KLA+ DG+FLVRD+S +L+ R G +I H NGR+ F
Sbjct: 12 WYWGPITRWEAEGKLANVPDGSFLVRDSSDDRYLLSLSFRSHGKTLHTRIEHSNGRFSFY 71
Query: 277 EPFK---FTSVVELIN 289
E TS+V+LI
Sbjct: 72 EQPDVEGHTSIVDLIE 87
Score = 36.0 bits (83), Expect = 0.006
Identities = 22/73 (30%), Positives = 38/73 (52%), Gaps = 4/73 (5%)
Query: 424 RMSRAQAEALLSGRPDGTFLIRPSTTGQY--ALSIVCSGAPKHCLVYETERGFGFAEPFN 481
++R +AE L+ PDG+FL+R S+ +Y +LS G H + + F F E +
Sbjct: 16 PITRWEAEGKLANVPDGSFLVRDSSDDRYLLSLSFRSHGKTLHTRIEHSNGRFSFYEQPD 75
Query: 482 I--YPSLGALVLH 492
+ + S+ L+ H
Sbjct: 76 VEGHTSIVDLIEH 88
>gnl|CDD|238090 cd00159, RhoGAP, RhoGAP: GTPase-activator protein (GAP) for
Rho-like GTPases; GAPs towards Rho/Rac/Cdc42-like small
GTPases. Small GTPases (G proteins) cluster into
distinct families, and all act as molecular switches,
active in their GTP-bound form but inactive when bound
to GDP. The Rho family of small G proteins, which
includes Cdc42Hs, activates effectors involved in a wide
variety of developmental processes, including regulation
of cytoskeleton formation, cell proliferation and the
JNK signaling pathway. G proteins generally have a low
intrinsic GTPase hydrolytic activity but there are
family-specific groups of GAPs that enhance the rate of
GTP hydrolysis by several orders of magnitude. The
RhoGAPs are one of the major classes of regulators of
Rho G proteins.
Length = 169
Score = 68.9 bits (169), Expect = 9e-14
Identities = 26/95 (27%), Positives = 47/95 (49%)
Query: 49 PGNASQVAELFHAYSGEIKSYNFSKLEPALLAIMLKTYLKSLTEPLIPYVYYEKFVSLLS 108
G+AS++ EL + + + +A +LK YL+ L EPLIP+ Y++F+ L
Sbjct: 25 SGSASKIEELKKKFDRGEDIDDLEDYDVHDVASLLKLYLRELPEPLIPFELYDEFIELAK 84
Query: 109 GSNDRHIGSRLFALVQDFPAHHFSALRYLMAHLAR 143
++ L L++ P + L+YL+ L +
Sbjct: 85 IEDEEERIEALKELLKSLPPENRDLLKYLLKLLHK 119
>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 = 65.9 bits (161), Expect = 3e-13
Identities = 39/110 (35%), Positives = 56/110 (50%), Gaps = 12/110 (10%)
Query: 210 NSLRDAEWYWGDISRDDVNDKLADTA-DGTFLVRDTSTKNGEYTLTLRKGGTNK-LIKIF 267
+L EWY GD+SR L +G F+VR++STK G YT++L +K +
Sbjct: 1 LNLEKYEWYVGDMSRQRAESLLKQEDKEGCFVVRNSSTK-GLYTVSLFTKVPGSPHVKHY 59
Query: 268 H--RN--GRYGFSEPFKFTSVVELINYYKHESLSQYNSTLDTRLLYPVSR 313
H +N + +E F ++ ELINY++H S L TRL YPV
Sbjct: 60 HIKQNARSEFYLAEKHCFETIPELINYHQHNS-----GGLATRLKYPVCD 104
Score = 37.8 bits (88), Expect = 0.002
Identities = 34/101 (33%), Positives = 51/101 (50%), Gaps = 14/101 (13%)
Query: 421 WLVR-MSRAQAEALL-SGRPDGTFLIRPSTT-GQYALSIV--CSGAP--KHCLVYETERG 473
W V MSR +AE+LL +G F++R S+T G Y +S+ G+P KH + + R
Sbjct: 8 WYVGDMSRQRAESLLKQEDKEGCFVVRNSSTKGLYTVSLFTKVPGSPHVKHYHIKQNARS 67
Query: 474 -FGFAEPFNIYPSLGALVLHYAANSLEEHNDDLKTTLAYPV 513
F AE + ++ L+ ++ NS L T L YPV
Sbjct: 68 EFYLAEKH-CFETIPELINYHQHNS-----GGLATRLKYPV 102
Score = 32.8 bits (75), Expect = 0.11
Identities = 16/38 (42%), Positives = 21/38 (55%), Gaps = 5/38 (13%)
Query: 340 SEPFKFTSVVELINYYKHESLSQYNSTLDTRLLYPVSR 377
+E F ++ ELINY++H S L TRL YPV
Sbjct: 72 AEKHCFETIPELINYHQHNS-----GGLATRLKYPVCD 104
>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 = 61.6 bits (150), Expect = 7e-12
Identities = 30/91 (32%), Positives = 44/91 (48%), Gaps = 4/91 (4%)
Query: 211 SLRDAEWYWGDISRDDVNDKLADTADGTFLVRDTSTKNGEYTLTLRKGGTNKLIKIFHRN 270
L+D WYWG +S +D L++ DG+FLVRD+S ++L+ R G+ +I
Sbjct: 6 ELKDCGWYWGPMSWEDAEKVLSNKPDGSFLVRDSSDDRYIFSLSFRSQGSVHHTRIEQYQ 65
Query: 271 GRYGFSEPFKFT----SVVELINYYKHESLS 297
G + KF S+VE I S S
Sbjct: 66 GTFSLGSRNKFVDRSQSLVEFIERAVEHSRS 96
Score = 36.9 bits (86), Expect = 0.003
Identities = 15/32 (46%), Positives = 22/32 (68%)
Query: 425 MSRAQAEALLSGRPDGTFLIRPSTTGQYALSI 456
MS AE +LS +PDG+FL+R S+ +Y S+
Sbjct: 17 MSWEDAEKVLSNKPDGSFLVRDSSDDRYIFSL 48
>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 = 61.0 bits (148), Expect = 1e-11
Identities = 36/112 (32%), Positives = 58/112 (51%), Gaps = 14/112 (12%)
Query: 210 NSLRDAEWYWGDISRDDVNDKL-ADTADGTFLVRDTSTKNGEYTLT-LRKGGTNKLIKIF 267
+SL EWY +++R L + +G F+VRD S+K G+YT++ K + I
Sbjct: 1 DSLEMYEWYSKNMTRSQAEQLLKQEGKEGGFIVRD-SSKAGKYTVSVFAKSAGDPQGVIR 59
Query: 268 HRN------GRYGFSEPFKFTSVVELINYYKHESLSQYNSTLDTRLLYPVSR 313
H +Y +E F+++ ELINY++H + + L +RL YPVS
Sbjct: 60 HYVVCSTPQSQYYLAEKHLFSTIPELINYHQHNA-----AGLISRLKYPVSS 106
Score = 32.1 bits (73), Expect = 0.18
Identities = 15/38 (39%), Positives = 24/38 (63%), Gaps = 5/38 (13%)
Query: 340 SEPFKFTSVVELINYYKHESLSQYNSTLDTRLLYPVSR 377
+E F+++ ELINY++H + + L +RL YPVS
Sbjct: 74 AEKHLFSTIPELINYHQHNA-----AGLISRLKYPVSS 106
>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 = 60.8 bits (147), Expect = 2e-11
Identities = 31/94 (32%), Positives = 47/94 (50%)
Query: 217 WYWGDISRDDVNDKLADTADGTFLVRDTSTKNGEYTLTLRKGGTNKLIKIFHRNGRYGFS 276
WY G + R LA+ +DGT+LVR E+ ++++ K IKI G Y +
Sbjct: 7 WYAGPMERAGAESILANRSDGTYLVRQRVKDAAEFAISIKYNVEVKHIKIMTAEGLYRIT 66
Query: 277 EPFKFTSVVELINYYKHESLSQYNSTLDTRLLYP 310
E F + EL+ +Y+ SL +LDT L +P
Sbjct: 67 EKKAFRGLTELVEFYQQNSLKDCFKSLDTTLQFP 100
Score = 50.4 bits (120), Expect = 7e-08
Identities = 31/90 (34%), Positives = 46/90 (51%), Gaps = 3/90 (3%)
Query: 425 MSRAQAEALLSGRPDGTFLIRPST--TGQYALSIVCSGAPKHCLVYETERGFGFAEPFNI 482
M RA AE++L+ R DGT+L+R ++A+SI + KH + E + E
Sbjct: 12 MERAGAESILANRSDGTYLVRQRVKDAAEFAISIKYNVEVKHIKIMTAEGLYRITEK-KA 70
Query: 483 YPSLGALVLHYAANSLEEHNDDLKTTLAYP 512
+ L LV Y NSL++ L TTL +P
Sbjct: 71 FRGLTELVEFYQQNSLKDCFKSLDTTLQFP 100
Score = 27.7 bits (61), Expect = 5.2
Identities = 13/39 (33%), Positives = 20/39 (51%)
Query: 336 LRTFSEPFKFTSVVELINYYKHESLSQYNSTLDTRLLYP 374
L +E F + EL+ +Y+ SL +LDT L +P
Sbjct: 62 LYRITEKKAFRGLTELVEFYQQNSLKDCFKSLDTTLQFP 100
>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 = 60.4 bits (147), Expect = 3e-11
Identities = 37/117 (31%), Positives = 52/117 (44%), Gaps = 13/117 (11%)
Query: 208 ETNSLRDAEWYWGDISRDDVNDKLADTA-DGTFLVRDTSTKNGE--YTLT--LRKGGTNK 262
E L EWY G+I R + + L + DGTFLVRD+S K+ YTL N
Sbjct: 4 EEADLLPKEWYAGNIDRKEAEEALRRSNKDGTFLVRDSSGKDSSQPYTLMVLYNDKVYNI 63
Query: 263 LIKIFHRNGRY----GFSEPFKFTSVVELINYYKHESL----SQYNSTLDTRLLYPV 311
I+ +Y G F+SV E+I +++ L + N+ T LLY
Sbjct: 64 QIRFLENTRQYALGTGLRGEETFSSVAEIIEHHQKTPLLLIDGKDNTKDSTCLLYAA 120
Score = 33.1 bits (76), Expect = 0.099
Identities = 11/36 (30%), Positives = 18/36 (50%), Gaps = 4/36 (11%)
Query: 344 KFTSVVELINYYKHESL----SQYNSTLDTRLLYPV 375
F+SV E+I +++ L + N+ T LLY
Sbjct: 85 TFSSVAEIIEHHQKTPLLLIDGKDNTKDSTCLLYAA 120
Score = 30.4 bits (69), Expect = 0.78
Identities = 12/26 (46%), Positives = 15/26 (57%), Gaps = 1/26 (3%)
Query: 426 SRAQAE-ALLSGRPDGTFLIRPSTTG 450
R +AE AL DGTFL+R S+
Sbjct: 19 DRKEAEEALRRSNKDGTFLVRDSSGK 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 = 59.9 bits (145), Expect = 3e-11
Identities = 33/92 (35%), Positives = 51/92 (55%), Gaps = 15/92 (16%)
Query: 211 SLRDAEWYWGDISRDDVNDKLADTADGTFLVRDTSTKNGEYTLTL----RKGGTNKLIKI 266
L WYWG ++ ++ +KL D +GTFLVRD+S +Y LT+ G TN ++I
Sbjct: 3 ELSQTGWYWGSMTVNEAKEKLQDAPEGTFLVRDSSHS--DYLLTISVKTSAGPTN--LRI 58
Query: 267 FHRNGRYGF-------SEPFKFTSVVELINYY 291
+++G++ S+ +F SVV LI YY
Sbjct: 59 EYQDGKFRLDSIICVKSKLKQFDSVVHLIEYY 90
Score = 31.8 bits (72), Expect = 0.21
Identities = 13/32 (40%), Positives = 20/32 (62%)
Query: 425 MSRAQAEALLSGRPDGTFLIRPSTTGQYALSI 456
M+ +A+ L P+GTFL+R S+ Y L+I
Sbjct: 14 MTVNEAKEKLQDAPEGTFLVRDSSHSDYLLTI 45
>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 = 57.6 bits (140), Expect = 2e-10
Identities = 27/88 (30%), Positives = 44/88 (50%), Gaps = 8/88 (9%)
Query: 216 EWYWGDISRDDVNDKL--ADTADGTFLVRDTSTKNGEYTLTLRKGGTNKLIKIFH---R- 269
EW++G I R D L GTFL+R++ T G Y+L++R G + + H R
Sbjct: 4 EWFFGKIKRKDAEKLLLAPGNPRGTFLIRESETTPGAYSLSVRDGDDARGDTVKHYRIRK 63
Query: 270 --NGRYGFSEPFKFTSVVELINYYKHES 295
NG Y + F ++ EL+ +Y ++
Sbjct: 64 LDNGGYYITTRATFPTLQELVQHYSKDA 91
Score = 47.2 bits (113), Expect = 7e-07
Identities = 33/104 (31%), Positives = 46/104 (44%), Gaps = 14/104 (13%)
Query: 418 EKTWLVRMSRAQAEALL--SGRPDGTFLIRPSTT--GQYALSIVCSGAP-----KHCLVY 468
E+ + ++ R AE LL G P GTFLIR S T G Y+LS+ KH +
Sbjct: 3 EEWFFGKIKRKDAEKLLLAPGNPRGTFLIRESETTPGAYSLSVRDGDDARGDTVKHYRIR 62
Query: 469 ETERGFGFAEPFNIYPSLGALVLHYAANSLEEHNDDLKTTLAYP 512
+ + G + +P+L LV HY + D L L P
Sbjct: 63 KLDNGGYYITTRATFPTLQELVQHY-----SKDADGLCCRLTVP 101
>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 = 57.2 bits (139), Expect = 2e-10
Identities = 30/92 (32%), Positives = 43/92 (46%), Gaps = 9/92 (9%)
Query: 211 SLRDAEWYWGDISRDDVNDKLADTADGTFLVRDTSTKNG---EYTLTLRKGGTNK--LIK 265
L + +Y G + R+D + L DG FLVR T K G + L++R G + +I
Sbjct: 2 DLENEPYYHGLLPREDAEELL--KNDGDFLVRKTEPKGGGKRKLVLSVRWDGKIRHFVIN 59
Query: 266 IFHRNGRYGFSEPFKFTSVVELINYYKHESLS 297
G+Y E F S+ ELINYY+
Sbjct: 60 -RDDGGKYYI-EGKSFKSISELINYYQKTKEP 89
Score = 37.1 bits (87), Expect = 0.002
Identities = 17/81 (20%), Positives = 31/81 (38%), Gaps = 10/81 (12%)
Query: 425 MSRAQAEALLSGRPDGTFLIR-----PSTTGQYALSIVCSGAPKHCLVYETE-RGFGFAE 478
+ R AE LL + DG FL+R + LS+ G +H ++ + +
Sbjct: 13 LPREDAEELL--KNDGDFLVRKTEPKGGGKRKLVLSVRWDGKIRHFVINRDDGGKYYIEG 70
Query: 479 PFNIYPSLGALVLHYAANSLE 499
+ S+ L+ +Y
Sbjct: 71 KS--FKSISELINYYQKTKEP 89
Score = 27.5 bits (62), Expect = 5.7
Identities = 9/21 (42%), Positives = 11/21 (52%)
Query: 341 EPFKFTSVVELINYYKHESLS 361
E F S+ ELINYY+
Sbjct: 69 EGKSFKSISELINYYQKTKEP 89
>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 = 57.0 bits (137), Expect = 3e-10
Identities = 28/96 (29%), Positives = 51/96 (53%)
Query: 217 WYWGDISRDDVNDKLADTADGTFLVRDTSTKNGEYTLTLRKGGTNKLIKIFHRNGRYGFS 276
W+ G++ R ++ L A GT+L+R+ + + ++++ K IK+ ++ +
Sbjct: 7 WFAGNMERQQTDNLLKSHASGTYLIRERPAEAERFAISIKFNDEVKHIKVVEKDNWIHIT 66
Query: 277 EPFKFTSVVELINYYKHESLSQYNSTLDTRLLYPVS 312
E KF S++EL+ YY+ SL + LDT L YP
Sbjct: 67 EAKKFESLLELVEYYQCHSLKESFKQLDTTLKYPYK 102
Score = 48.1 bits (114), Expect = 4e-07
Identities = 33/90 (36%), Positives = 45/90 (50%), Gaps = 3/90 (3%)
Query: 425 MSRAQAEALLSGRPDGTFLIR--PSTTGQYALSIVCSGAPKHCLVYETERGFGFAEPFNI 482
M R Q + LL GT+LIR P+ ++A+SI + KH V E + E
Sbjct: 12 MERQQTDNLLKSHASGTYLIRERPAEAERFAISIKFNDEVKHIKVVEKDNWIHITEA-KK 70
Query: 483 YPSLGALVLHYAANSLEEHNDDLKTTLAYP 512
+ SL LV +Y +SL+E L TTL YP
Sbjct: 71 FESLLELVEYYQCHSLKESFKQLDTTLKYP 100
Score = 34.7 bits (79), Expect = 0.022
Identities = 16/37 (43%), Positives = 22/37 (59%)
Query: 340 SEPFKFTSVVELINYYKHESLSQYNSTLDTRLLYPVS 376
+E KF S++EL+ YY+ SL + LDT L YP
Sbjct: 66 TEAKKFESLLELVEYYQCHSLKESFKQLDTTLKYPYK 102
>gnl|CDD|239843 cd04378, RhoGAP_GMIP_PARG1, RhoGAP_GMIP_PARG1: RhoGAP
(GTPase-activator protein [GAP] for Rho-like small
GTPases) domain of GMIP (Gem interacting protein) and
PARG1 (PTPL1-associated RhoGAP1). GMIP plays important
roles in neurite growth and axonal guidance, and
interacts with Gem, a member of the RGK subfamily of the
Ras small GTPase superfamily, through the N-terminal
half of the protein. GMIP contains a C-terminal RhoGAP
domain. GMIP inhibits RhoA function, but is inactive
towards Rac1 and Cdc41. PARG1 interacts with Rap2, also
a member of the Ras small GTPase superfamily whose exact
function is unknown, and shows strong preference for
Rho. Small GTPases cluster into distinct families, and
all act as molecular switches, active in their GTP-bound
form but inactive when GDP-bound. The Rho family of
GTPases activates effectors involved in a wide variety
of developmental processes, including regulation of
cytoskeleton formation, cell proliferation and the JNK
signaling pathway. GTPases generally have a low
intrinsic GTPase hydrolytic activity but there are
family-specific groups of GAPs that enhance the rate of
GTP hydrolysis by several orders of magnitude.
Length = 203
Score = 57.4 bits (139), Expect = 2e-09
Identities = 29/108 (26%), Positives = 54/108 (50%), Gaps = 14/108 (12%)
Query: 50 GNASQVAELFHAYSGEIKSYNFSKLEPALLAIMLKTYLKSLTEPLIPYVYYEKFVSL--- 106
G+ ++V +L A+ S+L P ++ +LK +L+ L EPLI + Y F++L
Sbjct: 42 GSKARVEKLCQAFENGKDLVELSELSPHDISSVLKLFLRQLPEPLILFRLYNDFIALAKE 101
Query: 107 -LSGSNDRH----------IGSRLFALVQDFPAHHFSALRYLMAHLAR 143
+ + I +L L++ PA +++ L++L+AHL R
Sbjct: 102 IQRDTEEDKAPNTPIEVNRIIRKLKDLLRQLPASNYNTLQHLIAHLYR 149
>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 = 54.8 bits (132), Expect = 2e-09
Identities = 41/113 (36%), Positives = 57/113 (50%), Gaps = 16/113 (14%)
Query: 210 NSLRDAEWYWGDISRDDVNDKLADTA-DGTFLVRDTSTKNGEYTLTLRK---GGTNKLIK 265
N+L EWY +I+R L D +G F+VRD+S G YT++L G N I+
Sbjct: 1 NNLDQYEWYNKNINRSKAEKLLRDEGKEGGFMVRDSSQP-GLYTVSLYTKAGGEGNPCIR 59
Query: 266 IFH------RNGRYGFSEPFKFTSVVELINYYKHESLSQYNSTLDTRLLYPVS 312
+H +Y +E F S+ ELI Y+KH + + L TRL YPVS
Sbjct: 60 HYHIKETNDSPKKYYLAEKHVFNSIPELIEYHKHNA-----AGLVTRLRYPVS 107
Score = 32.8 bits (75), Expect = 0.10
Identities = 17/37 (45%), Positives = 22/37 (59%), Gaps = 5/37 (13%)
Query: 340 SEPFKFTSVVELINYYKHESLSQYNSTLDTRLLYPVS 376
+E F S+ ELI Y+KH + + L TRL YPVS
Sbjct: 76 AEKHVFNSIPELIEYHKHNA-----AGLVTRLRYPVS 107
>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 = 54.2 bits (131), Expect = 2e-09
Identities = 29/95 (30%), Positives = 51/95 (53%), Gaps = 5/95 (5%)
Query: 217 WYWGDISRDDVNDKLADTADGTFLVRDTSTKNGEYTLTLRKGGTNKLIKIFHRNGRYGFS 276
W+ G ISR++ L DG FLVR+++ G+YTL + G + ++ +RNG+
Sbjct: 5 WFHGKISREEAERLLQPPEDGLFLVRESTNYPGDYTLCVSFEGKVEHYRVIYRNGKLTID 64
Query: 277 EPFKFTSVVELINYYKHESLSQYNSTLDTRLLYPV 311
E F ++++L+ +Y ++ L TRL+ P
Sbjct: 65 EEEYFENLIQLVEHYTKDA-----DGLCTRLVKPK 94
Score = 45.0 bits (107), Expect = 4e-06
Identities = 30/92 (32%), Positives = 40/92 (43%), Gaps = 8/92 (8%)
Query: 424 RMSRAQAEALLSGRPDGTFLIRPSTT--GQYALSIVCSGAPKHCLVYETERGFGFAEPFN 481
++SR +AE LL DG FL+R ST G Y L + G +H V E
Sbjct: 9 KISREEAERLLQPPEDGLFLVRESTNYPGDYTLCVSFEGKVEHYRVIYRNGKLTIDEE-E 67
Query: 482 IYPSLGALVLHYAANSLEEHNDDLKTTLAYPV 513
+ +L LV HY ++ D L T L P
Sbjct: 68 YFENLIQLVEHYTKDA-----DGLCTRLVKPK 94
>gnl|CDD|239863 cd04398, RhoGAP_fRGD1, RhoGAP_fRGD1: RhoGAP (GTPase-activator
protein [GAP] for Rho-like small GTPases) domain of
fungal RGD1-like proteins. Yeast Rgd1 is a GAP protein
for Rho3 and Rho4 and plays a role in low-pH response.
Small GTPases cluster into distinct families, and all
act as molecular switches, active in their GTP-bound
form but inactive when GDP-bound. The Rho family of
GTPases activates effectors involved in a wide variety
of developmental processes, including regulation of
cytoskeleton formation, cell proliferation and the JNK
signaling pathway. GTPases generally have a low
intrinsic GTPase hydrolytic activity but there are
family-specific groups of GAPs that enhance the rate of
GTP hydrolysis by several orders of magnitude.
Length = 192
Score = 55.5 bits (134), Expect = 7e-09
Identities = 25/100 (25%), Positives = 45/100 (45%), Gaps = 5/100 (5%)
Query: 49 PGNASQVAELFHAYSGEIKSYNF-----SKLEPALLAIMLKTYLKSLTEPLIPYVYYEKF 103
GN S+V +L + + + + + +A +LK + + L EPL+ +F
Sbjct: 41 SGNVSRVNKLKELFDKDPLNVLLISPEDYESDIHSVASLLKLFFRELPEPLLTKALSREF 100
Query: 104 VSLLSGSNDRHIGSRLFALVQDFPAHHFSALRYLMAHLAR 143
+ ++ L L+ D P +++ LR LM HLAR
Sbjct: 101 IEAAKIEDESRRRDALHGLINDLPDANYATLRALMFHLAR 140
>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 = 52.1 bits (125), Expect = 1e-08
Identities = 25/78 (32%), Positives = 43/78 (55%), Gaps = 2/78 (2%)
Query: 216 EWYWGDISRDDVNDKL-ADTADGTFLVRDTSTKNGEYTLTLRKGGTNKLIKIFHRNGRYG 274
WY+G I+R L +G FL+RD+ + G+Y+++L+ G NK K+ + Y
Sbjct: 2 PWYYGRITRHQAETLLNEHGHEGDFLIRDSESNPGDYSVSLKAPGRNKHFKVQVVDNVYC 61
Query: 275 FSEPFKFTSVVELINYYK 292
+ KF ++ EL+ +YK
Sbjct: 62 IGQR-KFHTMDELVEHYK 78
Score = 38.3 bits (89), Expect = 0.001
Identities = 24/75 (32%), Positives = 38/75 (50%), Gaps = 5/75 (6%)
Query: 424 RMSRAQAEALLSGRP-DGTFLIRPSTT--GQYALSIVCSGAPKHCLVYETERGFGFAEPF 480
R++R QAE LL+ +G FLIR S + G Y++S+ G KH V + + +
Sbjct: 7 RITRHQAETLLNEHGHEGDFLIRDSESNPGDYSVSLKAPGRNKHFKVQVVDNVYCIGQ-- 64
Query: 481 NIYPSLGALVLHYAA 495
+ ++ LV HY
Sbjct: 65 RKFHTMDELVEHYKK 79
>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 = 52.3 bits (126), Expect = 1e-08
Identities = 26/83 (31%), Positives = 49/83 (59%), Gaps = 3/83 (3%)
Query: 217 WYWGDISRDDVNDKLADTA-DGTFLVRDTSTKNGEYTLTLRKGGTNKLIKIFH-RNGRYG 274
W+ G ISR + + L + DG FL+R++ + G+++L+++ G + K+ G+Y
Sbjct: 5 WFHGKISRAEAEEILMNQRPDGAFLIRESESSPGDFSLSVKFGNDVQHFKVLRDGAGKY- 63
Query: 275 FSEPFKFTSVVELINYYKHESLS 297
F KF S+ EL++Y++ S+S
Sbjct: 64 FLWVVKFNSLNELVDYHRTTSVS 86
Score = 37.2 bits (87), Expect = 0.002
Identities = 29/79 (36%), Positives = 41/79 (51%), Gaps = 8/79 (10%)
Query: 424 RMSRAQAEALLSG-RPDGTFLIRPS--TTGQYALSIVCSGAPKHCLVYETERG--FGFAE 478
++SRA+AE +L RPDG FLIR S + G ++LS+ +H V G F +
Sbjct: 9 KISRAEAEEILMNQRPDGAFLIRESESSPGDFSLSVKFGNDVQHFKVLRDGAGKYFLWVV 68
Query: 479 PFNIYPSLGALVLHYAANS 497
FN SL LV ++ S
Sbjct: 69 KFN---SLNELVDYHRTTS 84
Score = 29.2 bits (66), Expect = 1.6
Identities = 8/18 (44%), Positives = 14/18 (77%)
Query: 344 KFTSVVELINYYKHESLS 361
KF S+ EL++Y++ S+S
Sbjct: 69 KFNSLNELVDYHRTTSVS 86
>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 = 52.0 bits (125), Expect = 2e-08
Identities = 29/90 (32%), Positives = 46/90 (51%), Gaps = 9/90 (10%)
Query: 216 EWYWGDIS--RDDVNDKLADTA---DGTFLVRDTSTKNGEYTLTLRKGGTNKLIKIFHRN 270
W+ G + RD+ L + DGTFLVR++ T G+YTL+ + G + +I R
Sbjct: 5 PWFHGKLGDGRDEAEKLLLEYCEGGDGTFLVRESETFVGDYTLSFWRNGKVQHCRIRSRQ 64
Query: 271 G----RYGFSEPFKFTSVVELINYYKHESL 296
+Y ++ F S+ ELI+YY+ L
Sbjct: 65 ENGEKKYYLTDNLVFDSLYELIDYYRQNPL 94
Score = 50.8 bits (122), Expect = 4e-08
Identities = 27/81 (33%), Positives = 39/81 (48%), Gaps = 10/81 (12%)
Query: 427 RAQAEALLS---GRPDGTFLIRPSTT--GQYALSIVCSGAPKHCLVYET----ERGFGFA 477
R +AE LL DGTFL+R S T G Y LS +G +HC + E+ +
Sbjct: 15 RDEAEKLLLEYCEGGDGTFLVRESETFVGDYTLSFWRNGKVQHCRIRSRQENGEKKYYLT 74
Query: 478 EPFNIYPSLGALVLHYAANSL 498
+ ++ SL L+ +Y N L
Sbjct: 75 DNL-VFDSLYELIDYYRQNPL 94
>gnl|CDD|198221 cd10358, SH2_PTK6_Brk, Src homology 2 domain found in
protein-tyrosine kinase-6 (PTK6) which is also known as
breast tumor kinase (Brk). Human protein-tyrosine
kinase-6 (PTK6, also known as breast tumor kinase (Brk))
is a member of the non-receptor protein-tyrosine kinase
family and is expressed in two-thirds of all breast
tumors. PTK6 (9). PTK6 contains a SH3 domain, a SH2
domain, and catalytic domains. For the case of the
non-receptor protein-tyrosine kinases, the SH2 domain is
typically involved in negative regulation of kinase
activity by binding to a phosphorylated tyrosine residue
near to the C terminus. The C-terminal sequence of PTK6
(PTSpYENPT where pY is phosphotyrosine) is thought to be
a self-ligand for the SH2 domain. The structure of the
SH2 domain resembles other SH2 domains except for a
centrally located four-stranded antiparallel beta-sheet
(strands betaA, betaB, betaC, and betaD). There are also
differences in the loop length which might be
responsible for PTK6 ligand specificity. There are two
possible means of regulation of PTK6: autoinhibitory
with the phosphorylation of Tyr playing a role in its
negative regulation and autophosphorylation at this
site, though it has been shown that PTK6 might
phosphorylate signal transduction-associated proteins
Sam68 and signal transducing adaptor family member 2
(STAP/BKS) in vivo. 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 = 51.7 bits (123), Expect = 2e-08
Identities = 29/85 (34%), Positives = 47/85 (55%), Gaps = 3/85 (3%)
Query: 217 WYWGDISRDDVNDKLA--DTADGTFLVRDTSTKNGEYTLTLRKGGTNKLIKIFHRN-GRY 273
W++G ISR + +L A G FL+R + + +Y L++R + KI+ R GR
Sbjct: 4 WFFGCISRSEAVRRLQAEGNATGAFLIRVSEKPSADYVLSVRDTQAVRHYKIWRRAGGRL 63
Query: 274 GFSEPFKFTSVVELINYYKHESLSQ 298
+E F S+ EL+NY++ +SLS
Sbjct: 64 HLNEAVSFLSLPELVNYHRAQSLSH 88
>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 = 50.6 bits (121), Expect = 4e-08
Identities = 25/82 (30%), Positives = 45/82 (54%), Gaps = 3/82 (3%)
Query: 217 WYWGDISRDDVNDKLADTAD--GTFLVRDTSTKNGEYTLTLRKGGTNKLIKIFH-RNGRY 273
WY+G I R + KL + G FL+RD+ +++ +Y+L++R G T K +I G +
Sbjct: 5 WYFGKIKRIEAEKKLLLPENEHGAFLIRDSESRHNDYSLSVRDGDTVKHYRIRQLDEGGF 64
Query: 274 GFSEPFKFTSVVELINYYKHES 295
+ F ++ EL+ +Y +S
Sbjct: 65 FIARRTTFRTLQELVEHYSKDS 86
Score = 32.9 bits (75), Expect = 0.084
Identities = 28/93 (30%), Positives = 41/93 (44%), Gaps = 9/93 (9%)
Query: 424 RMSRAQAEA--LLSGRPDGTFLIRPSTT--GQYALSIVCSGAPKHCLVYETERGFGFAEP 479
++ R +AE LL G FLIR S + Y+LS+ KH + + + G F
Sbjct: 9 KIKRIEAEKKLLLPENEHGAFLIRDSESRHNDYSLSVRDGDTVKHYRIRQLDEGGFFIAR 68
Query: 480 FNIYPSLGALVLHYAANSLEEHNDDLKTTLAYP 512
+ +L LV HY+ +S D L L P
Sbjct: 69 RTTFRTLQELVEHYSKDS-----DGLCVNLRKP 96
>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 = 51.1 bits (123), Expect = 4e-08
Identities = 33/91 (36%), Positives = 44/91 (48%), Gaps = 10/91 (10%)
Query: 426 SRAQAEALLSGRP-DGTFLIRPSTTGQ--YALSIVCSGAPKHCLVYETERGFGFAEPFNI 482
+R QAE +L P DG FL+RPS T +A+S G KHC + + R F +
Sbjct: 12 TREQAEEMLMRVPRDGAFLVRPSETDPNSFAISFRAEGKIKHCRIKQEGRLFVIGT--SQ 69
Query: 483 YPSLGALVLHYAANSLEEHNDDLKTTLAYPV 513
+ SL LV +Y + L K L YPV
Sbjct: 70 FESLVELVSYYEKHPLYR-----KIKLRYPV 95
Score = 41.9 bits (99), Expect = 6e-05
Identities = 32/102 (31%), Positives = 51/102 (50%), Gaps = 13/102 (12%)
Query: 216 EWYWGDISRDDVNDKLADTA-DGTFLVRDTSTKNGEYTLTLRKGGTNKLIKIFHRNGRY- 273
EW+ +++R+ + L DG FLVR + T + ++ R G K +I + GR
Sbjct: 5 EWFHANLTREQAEEMLMRVPRDGAFLVRPSETDPNSFAISFRAEGKIKHCRI-KQEGRLF 63
Query: 274 --GFSEPFKFTSVVELINYYKHESLSQYNSTLDTRLLYPVSR 313
G S+ F S+VEL++YY+ L Y +L YPV+
Sbjct: 64 VIGTSQ---FESLVELVSYYEKHPL--YRK---IKLRYPVNE 97
>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 = 50.4 bits (120), Expect = 5e-08
Identities = 23/78 (29%), Positives = 45/78 (57%), Gaps = 2/78 (2%)
Query: 216 EWYWGDISRDDVNDKLADTA-DGTFLVRDTSTKNGEYTLTLRKGGTNKLIKIFHRNGRYG 274
EWY+G+++R L + +G FL+RD+ + +++++L+ G NK K+ + Y
Sbjct: 2 EWYYGNVTRHQAECALNERGVEGDFLIRDSESSPSDFSVSLKAVGKNKHFKVQLVDNVYC 61
Query: 275 FSEPFKFTSVVELINYYK 292
+ +F S+ EL+ +YK
Sbjct: 62 IGQR-RFNSMDELVEHYK 78
>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 = 50.1 bits (120), Expect = 6e-08
Identities = 23/72 (31%), Positives = 42/72 (58%), Gaps = 1/72 (1%)
Query: 218 YWGDISRDDVNDKLADTADGTFLVRDTSTKNGEYTLTLRKGGTNKLIKIFHRNGRYGFSE 277
Y G ISR++ L+ +DG++L+R++S +G YTL+LR G K K+++ +
Sbjct: 9 YHGLISREEAEQLLSGASDGSYLIRESSRDDGYYTLSLRFNGKVKNYKLYYDGKNHYHYV 68
Query: 278 PFK-FTSVVELI 288
K F ++ +L+
Sbjct: 69 GEKRFDTIHDLV 80
Score = 45.4 bits (108), Expect = 3e-06
Identities = 20/46 (43%), Positives = 28/46 (60%), Gaps = 2/46 (4%)
Query: 425 MSRAQAEALLSGRPDGTFLIR--PSTTGQYALSIVCSGAPKHCLVY 468
+SR +AE LLSG DG++LIR G Y LS+ +G K+ +Y
Sbjct: 13 ISREEAEQLLSGASDGSYLIRESSRDDGYYTLSLRFNGKVKNYKLY 58
>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 = 50.4 bits (121), Expect = 6e-08
Identities = 24/45 (53%), Positives = 31/45 (68%), Gaps = 4/45 (8%)
Query: 424 RMSRAQAEALLSGRPDGTFLIRPSTT--GQYALSIVCSGAPKHCL 466
+MSR AE+LL + DG FL+R STT GQY L+ + +G PKH L
Sbjct: 13 KMSRRDAESLL--QTDGDFLVRESTTTPGQYVLTGMQNGQPKHLL 55
Score = 48.5 bits (116), Expect = 3e-07
Identities = 30/85 (35%), Positives = 42/85 (49%), Gaps = 3/85 (3%)
Query: 212 LRDAEWYWGDISRDDVNDKLADTADGTFLVRDTSTKNGEYTLTLRKGGTNKLIKIFHRNG 271
LR WY G +SR D L DG FLVR+++T G+Y LT + G K + + G
Sbjct: 4 LRGEPWYHGKMSRRDAESLL--QTDGDFLVRESTTTPGQYVLTGMQNGQPKHLLLVDPEG 61
Query: 272 RYGFSEPFKFTSVVELINYYKHESL 296
++ F S+ LINY+ L
Sbjct: 62 VVR-TKDRVFESISHLINYHVTNGL 85
>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 = 50.1 bits (120), Expect = 9e-08
Identities = 27/105 (25%), Positives = 43/105 (40%), Gaps = 18/105 (17%)
Query: 217 WYWGDISRDDVND--KLADTADGTFLVRDTSTKNGEYTLTLRKGGTNKLIKIFHR----- 269
+++G I+R++ + KLA +DG FL+R + G Y L++ G K H
Sbjct: 3 FFYGSITREEAEEYLKLAGMSDGLFLLRQSLRSLGGYVLSVCHGR-----KFHHYTIERQ 57
Query: 270 -NGRYGFSEPFKFTSVVELINYYKHESLSQYNSTLDTRLLYPVSR 313
NG Y + EL Y+ + L L P +R
Sbjct: 58 LNGTYAIAGGKAHCGPAELCEYHSTDL-----DGLVCLLRKPCNR 97
>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 = 49.8 bits (119), Expect = 1e-07
Identities = 17/40 (42%), Positives = 25/40 (62%)
Query: 217 WYWGDISRDDVNDKLADTADGTFLVRDTSTKNGEYTLTLR 256
WY+G +SR + + L G FLVRD+ST G+Y L++
Sbjct: 9 WYFGPMSRQEAQELLQGQRHGVFLVRDSSTIPGDYVLSVS 48
Score = 35.5 bits (82), Expect = 0.011
Identities = 17/35 (48%), Positives = 23/35 (65%), Gaps = 2/35 (5%)
Query: 424 RMSRAQAEALLSGRPDGTFLIRPSTT--GQYALSI 456
MSR +A+ LL G+ G FL+R S+T G Y LS+
Sbjct: 13 PMSRQEAQELLQGQRHGVFLVRDSSTIPGDYVLSV 47
>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 = 49.4 bits (118), Expect = 1e-07
Identities = 29/73 (39%), Positives = 40/73 (54%), Gaps = 5/73 (6%)
Query: 425 MSRAQAEA-LLSGRPDGTFLIRPS--TTGQYALSIVCSGAPKHCLVYETERGFGFAEPFN 481
++R AEA LLS DG++L+R S TG ++LS+ + KH V T F F FN
Sbjct: 13 LTRHAAEALLLSNGVDGSYLLRNSNEGTGLFSLSVRAKDSVKHFHVEYTGYSFKFG--FN 70
Query: 482 IYPSLGALVLHYA 494
+ SL V H+A
Sbjct: 71 EFSSLQDFVKHFA 83
Score = 32.5 bits (74), Expect = 0.089
Identities = 23/91 (25%), Positives = 50/91 (54%), Gaps = 12/91 (13%)
Query: 212 LRDAEWYWGDISRDDVND-KLADTADGTFLVRDTSTKNGEYTLTLRKGGTNKLIKIFH-- 268
L+ WY G+++R L++ DG++L+R+++ G ++L++R + +K FH
Sbjct: 3 LQSLGWYHGNLTRHAAEALLLSNGVDGSYLLRNSNEGTGLFSLSVRAKDS---VKHFHVE 59
Query: 269 RNGRY---GFSEPFKFTSVVELINYYKHESL 296
G GF+E F+S+ + + ++ ++ L
Sbjct: 60 YTGYSFKFGFNE---FSSLQDFVKHFANQPL 87
>gnl|CDD|239874 cd04409, RhoGAP_PARG1, RhoGAP_PARG1: RhoGAP (GTPase-activator
protein [GAP] for Rho-like small GTPases) domain of
PARG1 (PTPL1-associated RhoGAP1). PARG1 was originally
cloned as an interaction partner of PTPL1, an
intracellular protein-tyrosine phosphatase. PARG1
interacts with Rap2, also a member of the Ras small
GTPase superfamily whose exact function is unknown, and
shows strong preference for Rho. Small GTPases cluster
into distinct families, and all act as molecular
switches, active in their GTP-bound form but inactive
when GDP-bound. The Rho family of GTPases activates
effectors involved in a wide variety of developmental
processes, including regulation of cytoskeleton
formation, cell proliferation and the JNK signaling
pathway. GTPases generally have a low intrinsic GTPase
hydrolytic activity but there are family-specific groups
of GAPs that enhance the rate of GTP hydrolysis by
several orders of magnitude.
Length = 211
Score = 52.1 bits (125), Expect = 1e-07
Identities = 30/117 (25%), Positives = 52/117 (44%), Gaps = 22/117 (18%)
Query: 50 GNASQVAELFHAYSGEIKSYNFSKLEPALLAIMLKTYLKSLTEPLIPYVYYEKFVSLLSG 109
G S+V +L A+ S+L P ++ +LK YL+ L EPLI + Y +F+ L
Sbjct: 42 GAKSRVEKLCQAFENGKDLVELSELSPHDISNVLKLYLRQLPEPLILFRLYNEFIGLAKE 101
Query: 110 S---NDRHIGSRLFA-------------------LVQDFPAHHFSALRYLMAHLARM 144
S N+ + L++ PA +++ L++L+ HL R+
Sbjct: 102 SQHVNETQEAKKNSDKKWPNMCTELNRILLKSKDLLRQLPAPNYNTLQFLIVHLHRV 158
>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 = 48.9 bits (117), Expect = 1e-07
Identities = 28/100 (28%), Positives = 54/100 (54%), Gaps = 16/100 (16%)
Query: 217 WYWGDISRDDVNDKLADTADGTFLVRDTSTKNGEYTLTLRKGGTNKLIKIFH------RN 270
WY G ISR+ L+ +G+FLVR++ + G+Y+++LR G +++H +
Sbjct: 5 WYHGPISRNAAEYLLSSGINGSFLVRESESSPGQYSISLRYDG-----RVYHYRISEDSD 59
Query: 271 GRYGFSEPFKFTSVVELINYYKHESLSQYNSTLDTRLLYP 310
G+ ++ +F ++ EL++++ S+ L T L YP
Sbjct: 60 GKVYVTQEHRFNTLAELVHHH-----SKNADGLITTLRYP 94
Score = 48.2 bits (115), Expect = 3e-07
Identities = 32/91 (35%), Positives = 48/91 (52%), Gaps = 7/91 (7%)
Query: 424 RMSRAQAEALLSGRPDGTFLIRPSTT--GQYALSIVCSGAPKHCLVYETERGFGFAEPFN 481
+SR AE LLS +G+FL+R S + GQY++S+ G H + E G + +
Sbjct: 9 PISRNAAEYLLSSGINGSFLVRESESSPGQYSISLRYDGRVYHYRISEDSDGKVYVTQEH 68
Query: 482 IYPSLGALVLHYAANSLEEHNDDLKTTLAYP 512
+ +L LV H++ N+ D L TTL YP
Sbjct: 69 RFNTLAELVHHHSKNA-----DGLITTLRYP 94
>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 = 49.2 bits (117), Expect = 2e-07
Identities = 34/104 (32%), Positives = 56/104 (53%), Gaps = 14/104 (13%)
Query: 216 EWYWGDISRDDVNDKL-ADTADGTFLVRDTSTKNGEYTLTL---RKGGTNKLIKIFH--R 269
EWY +I+R+ L ++ +G F+VRD S G YT+++ + T IK + +
Sbjct: 7 EWYHKNITRNQAERLLRQESKEGAFIVRD-SRHLGSYTISVFTRARRSTEASIKHYQIKK 65
Query: 270 N--GRYGFSEPFKFTSVVELINYYKHESLSQYNSTLDTRLLYPV 311
N G++ +E F S+ ELI Y++H + + L +RL YPV
Sbjct: 66 NDSGQWYVAERHLFQSIPELIQYHQHNA-----AGLMSRLRYPV 104
Score = 28.4 bits (63), Expect = 3.9
Identities = 14/36 (38%), Positives = 21/36 (58%), Gaps = 5/36 (13%)
Query: 340 SEPFKFTSVVELINYYKHESLSQYNSTLDTRLLYPV 375
+E F S+ ELI Y++H + + L +RL YPV
Sbjct: 74 AERHLFQSIPELIQYHQHNA-----AGLMSRLRYPV 104
>gnl|CDD|239849 cd04384, RhoGAP_CdGAP, RhoGAP_CdGAP: RhoGAP (GTPase-activator
protein [GAP] for Rho-like small GTPases) domain of
CdGAP-like proteins; CdGAP contains an N-terminal RhoGAP
domain and a C-terminal proline-rich region, and it is
active on both Cdc42 and Rac1 but not RhoA. CdGAP is
recruited to focal adhesions via the interaction with
the scaffold protein actopaxin (alpha-parvin). Small
GTPases cluster into distinct families, and all act as
molecular switches, active in their GTP-bound form but
inactive when GDP-bound. The Rho family of GTPases
activates effectors involved in a wide variety of
developmental processes, including regulation of
cytoskeleton formation, cell proliferation and the JNK
signaling pathway. GTPases generally have a low
intrinsic GTPase hydrolytic activity but there are
family-specific groups of GAPs that enhance the rate of
GTP hydrolysis by several orders of magnitude.
Length = 195
Score = 51.0 bits (122), Expect = 2e-07
Identities = 21/64 (32%), Positives = 35/64 (54%)
Query: 82 MLKTYLKSLTEPLIPYVYYEKFVSLLSGSNDRHIGSRLFALVQDFPAHHFSALRYLMAHL 141
+ K Y + L PL+ Y YEKF +S ++D ++ ++Q P H+ L +LM HL
Sbjct: 78 LCKLYFRELPNPLLTYQLYEKFSEAVSAASDEERLEKIHDVIQQLPPPHYRTLEFLMRHL 137
Query: 142 ARMC 145
+R+
Sbjct: 138 SRLA 141
>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 = 48.7 bits (116), Expect = 2e-07
Identities = 28/84 (33%), Positives = 43/84 (51%), Gaps = 8/84 (9%)
Query: 216 EWYWGDISRDDVNDKLADTAD--GTFLVRDTSTKNGEYTLTLR-----KGGTNKLIKIFH 268
EWY+G I R D +L + G FL+R++ T G Y+L++R +G K KI
Sbjct: 4 EWYFGKIGRKDAERQLLSPGNPRGAFLIRESETTKGAYSLSIRDWDQNRGDHVKHYKIRK 63
Query: 269 -RNGRYGFSEPFKFTSVVELINYY 291
G Y + +F +V EL+ +Y
Sbjct: 64 LDTGGYYITTRAQFDTVQELVQHY 87
Score = 36.0 bits (83), Expect = 0.006
Identities = 19/43 (44%), Positives = 24/43 (55%), Gaps = 4/43 (9%)
Query: 418 EKTWLVRMSRAQAEALL--SGRPDGTFLIRPS--TTGQYALSI 456
E+ + ++ R AE L G P G FLIR S T G Y+LSI
Sbjct: 3 EEWYFGKIGRKDAERQLLSPGNPRGAFLIRESETTKGAYSLSI 45
>gnl|CDD|198185 cd09931, SH2_C-SH2_SHP_like, C-terminal Src homology 2 (C-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): [SIVL]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 = 48.8 bits (117), Expect = 2e-07
Identities = 22/78 (28%), Positives = 41/78 (52%), Gaps = 2/78 (2%)
Query: 217 WYWGDISRDDVNDKLADTA-DGTFLVRDTSTKNGEYTLTLRKGGTN-KLIKIFHRNGRYG 274
W+ G +S + L + G+FLVR++ +K G++ L++R I I + G+Y
Sbjct: 2 WFHGHLSGKEAEKLLLEKGKPGSFLVRESQSKPGDFVLSVRTDDDKVTHIMIRCQGGKYD 61
Query: 275 FSEPFKFTSVVELINYYK 292
+F S+ +L+ +YK
Sbjct: 62 VGGGEEFDSLTDLVEHYK 79
Score = 40.3 bits (95), Expect = 2e-04
Identities = 26/85 (30%), Positives = 40/85 (47%), Gaps = 11/85 (12%)
Query: 425 MSRAQAEALLSGRP-DGTFLIRPSTT--GQYALSIVCSGAP-KHCLVYETERG---FGFA 477
+S +AE LL + G+FL+R S + G + LS+ H ++ + G G
Sbjct: 7 LSGKEAEKLLLEKGKPGSFLVRESQSKPGDFVLSVRTDDDKVTHIMIR-CQGGKYDVGGG 65
Query: 478 EPFNIYPSLGALVLHYAANSLEEHN 502
E F+ SL LV HY N + E +
Sbjct: 66 EEFD---SLTDLVEHYKKNPMVETS 87
>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 = 48.2 bits (115), Expect = 3e-07
Identities = 28/89 (31%), Positives = 47/89 (52%), Gaps = 11/89 (12%)
Query: 212 LRDAEWYWGDISRDDVNDKLADTADGTFLVRDTSTKNGEYTLTLR--KGGTNKLIKIFHR 269
LR++ WYWG I+ + + L +GTFLVRD+S + TL+++ +G TN ++I +
Sbjct: 1 LRESGWYWGSITASEAHQALQKAPEGTFLVRDSSHPSYMLTLSVKTTRGPTN--VRIEYS 58
Query: 270 NGRY-------GFSEPFKFTSVVELINYY 291
+G + F VV L+ +Y
Sbjct: 59 DGSFRLDSSSLARPRLLSFPDVVSLVQHY 87
Score = 31.3 bits (71), Expect = 0.25
Identities = 11/32 (34%), Positives = 20/32 (62%)
Query: 425 MSRAQAEALLSGRPDGTFLIRPSTTGQYALSI 456
++ ++A L P+GTFL+R S+ Y L++
Sbjct: 11 ITASEAHQALQKAPEGTFLVRDSSHPSYMLTL 42
>gnl|CDD|239855 cd04390, RhoGAP_ARHGAP22_24_25, RhoGAP_ARHGAP22_24_25:
GTPase-activator protein (GAP) domain for Rho-like
GTPases found in ARHGAP22, 24 and 25-like proteins;
longer isoforms of these proteins contain an additional
N-terminal pleckstrin homology (PH) domain. ARHGAP25
(KIA0053) has been identified as a GAP for Rac1 and
Cdc42. Short isoforms (without the PH domain) of
ARHGAP24, called RC-GAP72 and p73RhoGAP, and of
ARHGAP22, called p68RacGAP, has been shown to be
involved in angiogenesis and endothelial cell capillary
formation. Small GTPases cluster into distinct families,
and all act as molecular switches, active in their
GTP-bound form but inactive when GDP-bound. The Rho
family of GTPases activates effectors involved in a wide
variety of developmental processes, including regulation
of cytoskeleton formation, cell proliferation and the
JNK signaling pathway. GTPases generally have a low
intrinsic GTPase hydrolytic activity but there are
family-specific groups of GAPs that enhance the rate of
GTP hydrolysis by several orders of magnitude.
Length = 199
Score = 49.7 bits (119), Expect = 6e-07
Identities = 36/104 (34%), Positives = 52/104 (50%), Gaps = 9/104 (8%)
Query: 40 GLSAANLFE-PGNASQVAELFHAY-SGEIKSYNFSKLEPALLAIMLKTYLKSLTEPLIPY 97
GL LF PG A+ V +L A+ +GE S++ S + +A +LK YL+ L EP+IP+
Sbjct: 37 GLKEEGLFRLPGQANLVKQLQDAFDAGERPSFD-SDTDVHTVASLLKLYLRELPEPVIPW 95
Query: 98 VYYEKFVSLLSG---SNDRHIG-SRLFALVQDFPAHHFSALRYL 137
YE F L S D G L V P +++ L Y+
Sbjct: 96 AQYEDF--LSCAQLLSKDEEKGLGELMKQVSILPKVNYNLLSYI 137
>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 = 47.3 bits (112), Expect = 7e-07
Identities = 33/103 (32%), Positives = 53/103 (51%), Gaps = 13/103 (12%)
Query: 216 EWYWGDISRDDVNDKLADTAD--GTFLVRDTSTKNGEYTLTLR-----KGGTNKLIKIFH 268
EWY+G + R D +L + GTFL+R++ T G Y+L++R KG K KI
Sbjct: 4 EWYFGKLGRKDAERQLLSFGNPRGTFLIRESETTKGAYSLSIRDWDDMKGDHVKHYKIRK 63
Query: 269 -RNGRYGFSEPFKFTSVVELINYYKHESLSQYNSTLDTRLLYP 310
NG Y + +F ++ +L+ +Y S+ + L RL+ P
Sbjct: 64 LDNGGYYITTRAQFETLQQLVQHY-----SERAAGLCCRLVVP 101
Score = 34.2 bits (78), Expect = 0.029
Identities = 30/90 (33%), Positives = 44/90 (48%), Gaps = 9/90 (10%)
Query: 417 GEKTWLVRMSRAQAE-ALLS-GRPDGTFLIRPS--TTGQYALSI-----VCSGAPKHCLV 467
E+ + ++ R AE LLS G P GTFLIR S T G Y+LSI + KH +
Sbjct: 2 AEEWYFGKLGRKDAERQLLSFGNPRGTFLIRESETTKGAYSLSIRDWDDMKGDHVKHYKI 61
Query: 468 YETERGFGFAEPFNIYPSLGALVLHYAANS 497
+ + G + + +L LV HY+ +
Sbjct: 62 RKLDNGGYYITTRAQFETLQQLVQHYSERA 91
>gnl|CDD|198226 cd10363, SH2_Src_HCK, Src homology 2 (SH2) domain found in HCK.
HCK is a member of the Src non-receptor type tyrosine
kinase family of proteins and is expressed in
hemopoietic cells. HCK is proposed to couple the Fc
receptor to the activation of the respiratory burst. It
may also play a role in neutrophil migration and in the
degranulation of neutrophils. It has two different
translational starts that have different subcellular
localization. HCK has been shown to interact with BCR
gene, ELMO1 Cbl gene, RAS p21 protein activator 1,
RASA3, Granulocyte colony-stimulating factor receptor,
ADAM15 and RAPGEF1. 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. HCK 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.
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 = 47.3 bits (112), Expect = 7e-07
Identities = 29/88 (32%), Positives = 48/88 (54%), Gaps = 8/88 (9%)
Query: 216 EWYWGDISRDDVNDKLADTAD--GTFLVRDTSTKNGEYTLTLR-----KGGTNKLIKIFH 268
EW++ ISR D +L + G+F++RD+ T G Y+L++R G T K KI
Sbjct: 4 EWFFKGISRKDAERQLLAPGNMLGSFMIRDSETTKGSYSLSVRDYDPQHGDTVKHYKIRT 63
Query: 269 -RNGRYGFSEPFKFTSVVELINYYKHES 295
NG + S F+++ EL+++YK +
Sbjct: 64 LDNGGFYISPRSTFSTLQELVDHYKKGN 91
Score = 34.6 bits (79), Expect = 0.022
Identities = 31/102 (30%), Positives = 46/102 (45%), Gaps = 15/102 (14%)
Query: 421 WLVR-MSRAQAEA--LLSGRPDGTFLIRPS--TTGQYALSI-----VCSGAPKHCLVYET 470
W + +SR AE L G G+F+IR S T G Y+LS+ KH +
Sbjct: 5 WFFKGISRKDAERQLLAPGNMLGSFMIRDSETTKGSYSLSVRDYDPQHGDTVKHYKIRTL 64
Query: 471 ERGFGFAEPFNIYPSLGALVLHYAANSLEEHNDDLKTTLAYP 512
+ G + P + + +L LV HY ++ ND L L+ P
Sbjct: 65 DNGGFYISPRSTFSTLQELVDHY-----KKGNDGLCQKLSVP 101
>gnl|CDD|239869 cd04404, RhoGAP-p50rhoGAP, RhoGAP-p50rhoGAP: RhoGAP
(GTPase-activator protein [GAP] for Rho-like small
GTPases) domain of p50RhoGAP-like proteins; p50RhoGAP,
also known as RhoGAP-1, contains a C-terminal RhoGAP
domain and an N-terminal Sec14 domain which binds
phosphatidylinositol 3,4,5-trisphosphate
(PtdIns(3,4,5)P3). It is ubiquitously expressed and
preferentially active on Cdc42. This subgroup also
contains closely related ARHGAP8. Small GTPases cluster
into distinct families, and all act as molecular
switches, active in their GTP-bound form but inactive
when GDP-bound. The Rho family of GTPases activates
effectors involved in a wide variety of developmental
processes, including regulation of cytoskeleton
formation, cell proliferation and the JNK signaling
pathway. GTPases generally have a low intrinsic GTPase
hydrolytic activity but there are family-specific groups
of GAPs that enhance the rate of GTP hydrolysis by
several orders of magnitude.
Length = 195
Score = 48.9 bits (117), Expect = 1e-06
Identities = 31/107 (28%), Positives = 53/107 (49%), Gaps = 6/107 (5%)
Query: 40 GLSAANLF-EPGNASQVAELFHAY-SGEIKSYNFSKLE-PALLAIMLKTYLKSLTEPLIP 96
L+ +F N V E+ Y GE +F + E L A++LKT+L+ L EPL+
Sbjct: 38 ALTTEGIFRRSANTQVVKEVQQKYNMGE--PVDFDQYEDVHLPAVILKTFLRELPEPLLT 95
Query: 97 YVYYEKFVSLLSGSNDRHIGSRLFALVQDFPAHHFSALRYLMAHLAR 143
+ Y+ V L+ + + R+ L+Q P ++ L+YL+ L +
Sbjct: 96 FDLYDDIVGFLNVDKEERV-ERVKQLLQTLPEENYQVLKYLIKFLVQ 141
>gnl|CDD|198265 cd10402, SH2_C-SH2_Zap70, C-terminal Src homology 2 (SH2) domain
found in Zeta-chain-associated protein kinase 70
(ZAP-70). 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 C-terminus SH2 domains of 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 = 105
Score = 46.8 bits (111), Expect = 1e-06
Identities = 28/79 (35%), Positives = 44/79 (55%), Gaps = 4/79 (5%)
Query: 217 WYWGDISRDDVNDKLADTA--DGTFLVRDTSTKNGEYTLTLRKGGTNKLIKIFH-RNGRY 273
WY G I+RD+ +L A DG FL+R+ ++G Y L+L G T +I ++G+Y
Sbjct: 12 WYHGSIARDEAERRLYSGAQPDGKFLLRERK-ESGTYALSLVYGKTVYHYRIDQDKSGKY 70
Query: 274 GFSEPFKFTSVVELINYYK 292
E KF ++ +L+ Y K
Sbjct: 71 SIPEGTKFDTLWQLVEYLK 89
Score = 31.0 bits (70), Expect = 0.45
Identities = 20/53 (37%), Positives = 30/53 (56%), Gaps = 3/53 (5%)
Query: 424 RMSRAQAE-ALLSG-RPDGTFLIRP-STTGQYALSIVCSGAPKHCLVYETERG 473
++R +AE L SG +PDG FL+R +G YALS+V H + + + G
Sbjct: 16 SIARDEAERRLYSGAQPDGKFLLRERKESGTYALSLVYGKTVYHYRIDQDKSG 68
>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 = 46.4 bits (110), Expect = 1e-06
Identities = 25/82 (30%), Positives = 45/82 (54%), Gaps = 3/82 (3%)
Query: 217 WYWGDISRDDVNDKL--ADTADGTFLVRDTSTKNGEYTLTLRKGGTNKLIKIFHRNGRYG 274
W++G I R D +L ++ G FL+R++ ++ GE++L++ GG K +I +
Sbjct: 5 WFFGAIKRADAEKQLLYSENQTGAFLIRESESQKGEFSLSVLDGGVVKHYRIRRLDEGGF 64
Query: 275 FSEPFK-FTSVVELINYYKHES 295
F K F+++ E +NYY S
Sbjct: 65 FLTRRKTFSTLNEFVNYYTTTS 86
Score = 40.2 bits (94), Expect = 2e-04
Identities = 24/77 (31%), Positives = 36/77 (46%), Gaps = 4/77 (5%)
Query: 425 MSRAQAEA--LLSGRPDGTFLIRPSTT--GQYALSIVCSGAPKHCLVYETERGFGFAEPF 480
+ RA AE L S G FLIR S + G+++LS++ G KH + + G F
Sbjct: 10 IKRADAEKQLLYSENQTGAFLIRESESQKGEFSLSVLDGGVVKHYRIRRLDEGGFFLTRR 69
Query: 481 NIYPSLGALVLHYAANS 497
+ +L V +Y S
Sbjct: 70 KTFSTLNEFVNYYTTTS 86
>gnl|CDD|198206 cd10343, SH2_SHIP, Src homology 2 (SH2) domain found in
SH2-containing inositol-5'-phosphatase (SHIP) and
SLAM-associated protein (SAP). The SH2-containing
inositol-5'-phosphatase, SHIP (also called
SHIP1/SHIP1a), is a hematopoietic-restricted
phosphatidylinositide phosphatase that translocates to
the plasma membrane after extracellular stimulation and
hydrolyzes the phosphatidylinositol-3-kinase
(PI3K)-generated second messenger PI-3,4,5-P3 (PIP3) to
PI-3,4-P2. As a result, SHIP dampens down PIP3 mediated
signaling and represses the proliferation,
differentiation, survival, activation, and migration of
hematopoietic cells. PIP3 recruits lipid-binding
pleckstrin homology(PH) domain-containing proteins to
the inner wall of the plasma membrane and activates
them. PH domain-containing downstream effectors include
the survival/proliferation enhancing serine/threonine
kinase, Akt (protein kinase B), the tyrosine kinase,
Btk, the regulator of protein translation, S6K, and the
Rac and cdc42 guanine nucleotide exchange factor, Vav.
SHIP is believed to act as a tumor suppressor during
leukemogenesis and lymphomagenesis, and may play a role
in activating the immune system to combat cancer. SHIP
contains an N-terminal SH2 domain, a centrally located
phosphatase domain that specifically hydrolyzes the
5'-phosphate from PIP3, PI-4,5-P2 and inositol-1,3,4,5-
tetrakisphosphate (IP4), a C2 domain, that is an
allosteric activating site when bound by SHIP's
enzymatic product, PI-3,4-P2; 2 NPXY motifs that bind
proteins with a phosphotyrosine binding (Shc, Dok 1, Dok
2) or an SH2 (p85a, SHIP2) domain; and a proline-rich
domain consisting of four PxxP motifs that bind a subset
of SH3-containing proteins including Grb2, Src, Lyn,
Hck, Abl, PLCg1, and PIAS1. The SH2 domain of SHIP binds
to the tyrosine phosphorylated forms of Shc, SHP-2,
Doks, Gabs, CD150, platelet-endothelial cell adhesion
molecule, Cas, c-Cbl, immunoreceptor tyrosine-based
inhibitory motifs (ITIMs), and immunoreceptor
tyrosine-based activation motifs (ITAMs). 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(V/I),
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 = 46.7 bits (111), Expect = 1e-06
Identities = 35/108 (32%), Positives = 51/108 (47%), Gaps = 14/108 (12%)
Query: 214 DAEWYWGDISRDDVNDKLADTA-DGTFLVRDTSTKNGEYTLTL---RKGGTNKLI----K 265
WY G+I+R + L+ DG+FLVRD+ + +G Y L + T +++
Sbjct: 2 APPWYHGNITRSKAEELLSKAGKDGSFLVRDSESVSGAYALCVLYQNCVHTYRILPNAED 61
Query: 266 IFHRNGRYGFSEPFKFTSVVELINYYKHESLSQYNSTLDTRLLYPVSR 313
G F FT++ ELI +Y+ E N L T LLYPV R
Sbjct: 62 KLSVQASEGVPVRF-FTTLPELIEFYQKE-----NMGLVTHLLYPVER 103
Score = 29.3 bits (66), Expect = 1.4
Identities = 16/33 (48%), Positives = 20/33 (60%), Gaps = 5/33 (15%)
Query: 345 FTSVVELINYYKHESLSQYNSTLDTRLLYPVSR 377
FT++ ELI +Y+ E N L T LLYPV R
Sbjct: 76 FTTLPELIEFYQKE-----NMGLVTHLLYPVER 103
>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 = 46.6 bits (110), Expect = 1e-06
Identities = 23/78 (29%), Positives = 44/78 (56%), Gaps = 2/78 (2%)
Query: 216 EWYWGDISRDDVNDKLADTA-DGTFLVRDTSTKNGEYTLTLRKGGTNKLIKIFHRNGRYG 274
WY+G ++R L + +G FL+RD+ + +++++L+ G NK K+ + Y
Sbjct: 2 PWYYGKVTRHQAEMALNERGNEGDFLIRDSESSPNDFSVSLKAQGKNKHFKVQLKECVYC 61
Query: 275 FSEPFKFTSVVELINYYK 292
+ KF+S+ EL+ +YK
Sbjct: 62 IGQR-KFSSMEELVEHYK 78
>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 = 45.8 bits (109), Expect = 2e-06
Identities = 29/78 (37%), Positives = 39/78 (50%), Gaps = 11/78 (14%)
Query: 424 RMSRAQAEALLS--GRPDGTFLIRPSTT--GQYALSIVCSGAPKHCLVYETER----GFG 475
++SR AEALL G DG FL+R ST+ G Y LS++ G H Y+ R F
Sbjct: 7 KISREVAEALLLREGGRDGLFLVRESTSAPGDYVLSLLAQGEVLH---YQIRRHGEDAFF 63
Query: 476 FAEPFNIYPSLGALVLHY 493
+ I+ L L+ HY
Sbjct: 64 SDDGPLIFHGLDTLIEHY 81
Score = 42.0 bits (99), Expect = 3e-05
Identities = 27/80 (33%), Positives = 38/80 (47%), Gaps = 6/80 (7%)
Query: 217 WYWGDISRDDVNDKLA--DTADGTFLVRDTSTKNGEYTLTLRKGGTNKLIKIFHRNGRYG 274
WY G ISR+ L DG FLVR++++ G+Y L+L G +I R+G
Sbjct: 3 WYHGKISREVAEALLLREGGRDGLFLVRESTSAPGDYVLSLLAQGEVLHYQI-RRHGEDA 61
Query: 275 FS---EPFKFTSVVELINYY 291
F P F + LI +Y
Sbjct: 62 FFSDDGPLIFHGLDTLIEHY 81
>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 = 46.2 bits (109), Expect = 2e-06
Identities = 28/84 (33%), Positives = 45/84 (53%), Gaps = 8/84 (9%)
Query: 216 EWYWGDISRDDVNDKLADTAD--GTFLVRDTSTKNGEYTLTLR-----KGGTNKLIKIFH 268
EWY+G + R D +L + GTFL+R++ T G Y+L++R KG K KI
Sbjct: 4 EWYFGKLGRKDAERQLLSFGNPRGTFLIRESETTKGAYSLSIRDWDDMKGDHVKHYKIRK 63
Query: 269 -RNGRYGFSEPFKFTSVVELINYY 291
NG Y + +F ++ +L+ +Y
Sbjct: 64 LDNGGYYITTRAQFETLQQLVQHY 87
Score = 35.8 bits (82), Expect = 0.009
Identities = 30/88 (34%), Positives = 43/88 (48%), Gaps = 9/88 (10%)
Query: 416 SGEKTWLVRMSRAQAE-ALLS-GRPDGTFLIRPS--TTGQYALSI-----VCSGAPKHCL 466
E+ + ++ R AE LLS G P GTFLIR S T G Y+LSI + KH
Sbjct: 1 QAEEWYFGKLGRKDAERQLLSFGNPRGTFLIRESETTKGAYSLSIRDWDDMKGDHVKHYK 60
Query: 467 VYETERGFGFAEPFNIYPSLGALVLHYA 494
+ + + G + + +L LV HY+
Sbjct: 61 IRKLDNGGYYITTRAQFETLQQLVQHYS 88
>gnl|CDD|198227 cd10364, SH2_Src_Lyn, Src homology 2 (SH2) domain found in Lyn.
Lyn is a member of the Src non-receptor type tyrosine
kinase family of proteins and is expressed in the
hematopoietic cells, in neural tissues, liver, and
adipose tissue. There are two alternatively spliced
forms of Lyn. Lyn plays an inhibitory role in myeloid
lineage proliferation. Following engagement of the B
cell receptors, Lyn undergoes rapid phosphorylation and
activation, triggering a cascade of signaling events
mediated by Lyn phosphorylation of tyrosine residues
within the immunoreceptor tyrosine-based activation
motifs (ITAM) of the receptor proteins, and subsequent
recruitment and activation of other kinases including
Syk, phospholipase C2 (PLC2) and phosphatidyl inositol-3
kinase. These kinases play critical roles in
proliferation, Ca2+ mobilization and cell
differentiation. Lyn plays an essential role in the
transmission of inhibitory signals through
phosphorylation of tyrosine residues within the
immunoreceptor tyrosine-based inhibitory motifs (ITIM)
in regulatory proteins such as CD22, PIR-B and FC RIIb1.
Their ITIM phosphorylation subsequently leads to
recruitment and activation of phosphatases such as
SHIP-1 and SHP-1 which further down modulate signaling
pathways, attenuate cell activation and can mediate
tolerance. Lyn also plays a role in the insulin
signaling pathway. Activated Lyn phosphorylates insulin
receptor substrate 1 (IRS1) leading to an increase in
translocation of Glut-4 to the cell membrane and
increased glucose utilization. It is the primary Src
family member involved in signaling downstream of the B
cell receptor. Lyn plays an unusual, 2-fold role in B
cell receptor signaling; it is essential for initiation
of signaling but is also later involved in negative
regulation of the signal. Lyn 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 = 46.1 bits (109), Expect = 2e-06
Identities = 28/88 (31%), Positives = 45/88 (51%), Gaps = 8/88 (9%)
Query: 216 EWYWGDISRDDVNDKLADTAD--GTFLVRDTSTKNGEYTLTLRK-----GGTNKLIKIFH 268
EW++ DI+R D +L + G FL+R++ T G Y+L++R G K KI
Sbjct: 4 EWFFKDITRKDAERQLLAPGNSAGAFLIRESETLKGSYSLSVRDYDPQHGDVIKHYKIRS 63
Query: 269 -RNGRYGFSEPFKFTSVVELINYYKHES 295
NG Y S F + ++I +Y+ +S
Sbjct: 64 LDNGGYYISPRITFPCISDMIKHYQKQS 91
Score = 32.6 bits (74), Expect = 0.096
Identities = 22/77 (28%), Positives = 33/77 (42%), Gaps = 7/77 (9%)
Query: 428 AQAEALLSGRPDGTFLIRPSTT--GQYALSI-----VCSGAPKHCLVYETERGFGFAEPF 480
A+ + L G G FLIR S T G Y+LS+ KH + + G + P
Sbjct: 15 AERQLLAPGNSAGAFLIRESETLKGSYSLSVRDYDPQHGDVIKHYKIRSLDNGGYYISPR 74
Query: 481 NIYPSLGALVLHYAANS 497
+P + ++ HY S
Sbjct: 75 ITFPCISDMIKHYQKQS 91
>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 = 45.8 bits (108), Expect = 2e-06
Identities = 25/88 (28%), Positives = 44/88 (50%), Gaps = 8/88 (9%)
Query: 216 EWYWGDISRDDVNDKLADTAD--GTFLVRDTSTKNGEYTLTLRKGGTNKLIKIFH----- 268
EWY+G I+R + L + + GTFLVR++ T G Y L++ K + + H
Sbjct: 4 EWYFGKITRRESERLLLNAENPRGTFLVRESETTKGAYCLSVSDFDNAKGLNVKHYKIRK 63
Query: 269 -RNGRYGFSEPFKFTSVVELINYYKHES 295
+G + + +F S+ +L+ YY +
Sbjct: 64 LDSGGFYITSRTQFNSLQQLVAYYSKHA 91
Score = 31.2 bits (70), Expect = 0.34
Identities = 25/89 (28%), Positives = 43/89 (48%), Gaps = 9/89 (10%)
Query: 418 EKTWLVRMSRAQAEALLSG--RPDGTFLIRPS--TTGQYALSIVCSGAP-----KHCLVY 468
E+ + +++R ++E LL P GTFL+R S T G Y LS+ KH +
Sbjct: 3 EEWYFGKITRRESERLLLNAENPRGTFLVRESETTKGAYCLSVSDFDNAKGLNVKHYKIR 62
Query: 469 ETERGFGFAEPFNIYPSLGALVLHYAANS 497
+ + G + + SL LV +Y+ ++
Sbjct: 63 KLDSGGFYITSRTQFNSLQQLVAYYSKHA 91
>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 = 45.8 bits (109), Expect = 2e-06
Identities = 21/75 (28%), Positives = 40/75 (53%), Gaps = 1/75 (1%)
Query: 218 YWGDISRDDVNDKLADTADGTFLVRDTSTKNGEYTLTLRKGGTNKLIKIFHRNGRYGFSE 277
YWG +S ++ + KL GTFL+RD+ KN + L+++ I+I + G++
Sbjct: 13 YWGPLSVEEAHAKLKREPVGTFLIRDSRQKNCFFALSVKMASGPVSIRILFKAGKFSLDG 72
Query: 278 PFK-FTSVVELINYY 291
+ F + +L+ +Y
Sbjct: 73 SKESFDCLFKLLEHY 87
Score = 27.7 bits (62), Expect = 5.0
Identities = 22/73 (30%), Positives = 30/73 (41%), Gaps = 2/73 (2%)
Query: 425 MSRAQAEALLSGRPDGTFLIRPSTTGQ--YALSIVCSGAPKHCLVYETERGFGFAEPFNI 482
+S +A A L P GTFLIR S +ALS+ + P + F
Sbjct: 17 LSVEEAHAKLKREPVGTFLIRDSRQKNCFFALSVKMASGPVSIRILFKAGKFSLDGSKES 76
Query: 483 YPSLGALVLHYAA 495
+ L L+ HY A
Sbjct: 77 FDCLFKLLEHYVA 89
>gnl|CDD|239873 cd04408, RhoGAP_GMIP, RhoGAP_GMIP: RhoGAP (GTPase-activator protein
[GAP] for Rho-like small GTPases) domain of GMIP (Gem
interacting protein). GMIP plays important roles in
neurite growth and axonal guidance, and interacts with
Gem, a member of the RGK subfamily of the Ras small
GTPase superfamily, through the N-terminal half of the
protein. GMIP contains a C-terminal RhoGAP domain. GMIP
inhibits RhoA function, but is inactive towards Rac1 and
Cdc41. Small GTPases cluster into distinct families, and
all act as molecular switches, active in their GTP-bound
form but inactive when GDP-bound. The Rho family of
GTPases activates effectors involved in a wide variety
of developmental processes, including regulation of
cytoskeleton formation, cell proliferation and the JNK
signaling pathway. GTPases generally have a low
intrinsic GTPase hydrolytic activity but there are
family-specific groups of GAPs that enhance the rate of
GTP hydrolysis by several orders of magnitude.
Length = 200
Score = 47.9 bits (114), Expect = 3e-06
Identities = 31/109 (28%), Positives = 53/109 (48%), Gaps = 12/109 (11%)
Query: 50 GNASQVAELFHAYSGEIKSYNFSKLEPALLAIMLKTYLKSLTEPLIPYVYYEKFVSLL-- 107
G+ ++V +L A+ + S P + +LK +LK L EP++P+ Y+ F++L
Sbjct: 42 GSKARVEKLCQAFENGRDLVDLSGHSPHDITSVLKHFLKELPEPVLPFQLYDDFIALAKE 101
Query: 108 ----------SGSNDRHIGSRLFALVQDFPAHHFSALRYLMAHLARMCA 146
S S +I L L+ P +++ LR+LMAHL R+
Sbjct: 102 LQRDSEKAAESPSIVENIIRSLKELLGRLPVSNYNTLRHLMAHLYRVAE 150
>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 = 45.4 bits (107), Expect = 3e-06
Identities = 27/88 (30%), Positives = 45/88 (51%), Gaps = 8/88 (9%)
Query: 216 EWYWGDISRDDVNDKLADTAD--GTFLVRDTSTKNGEYTLTLR-----KGGTNKLIKIFH 268
EWY+G + R D L + + G FLVR++ T G Y+L++R +G K KI
Sbjct: 4 EWYFGKMGRKDAERLLLNPGNQRGIFLVRESETTKGAYSLSIRDWDEVRGDNVKHYKIRK 63
Query: 269 -RNGRYGFSEPFKFTSVVELINYYKHES 295
NG Y + +F ++ +L+ +Y +
Sbjct: 64 LDNGGYYITTRAQFDTLQKLVKHYTEHA 91
Score = 35.8 bits (82), Expect = 0.009
Identities = 32/98 (32%), Positives = 43/98 (43%), Gaps = 14/98 (14%)
Query: 417 GEKTWLVRMSRAQAEALL--SGRPDGTFLIRPS--TTGQYALSI-----VCSGAPKHCLV 467
E+ + +M R AE LL G G FL+R S T G Y+LSI V KH +
Sbjct: 2 AEEWYFGKMGRKDAERLLLNPGNQRGIFLVRESETTKGAYSLSIRDWDEVRGDNVKHYKI 61
Query: 468 YETERGFGFAEPFNIYPSLGALVLHYAANSLEEHNDDL 505
+ + G + + +L LV HY EH D L
Sbjct: 62 RKLDNGGYYITTRAQFDTLQKLVKHYT-----EHADGL 94
>gnl|CDD|239851 cd04386, RhoGAP_nadrin, RhoGAP_nadrin: RhoGAP (GTPase-activator
protein [GAP] for Rho-like small GTPases) domain of
Nadrin-like proteins. Nadrin, also named Rich-1, has
been shown to be involved in the regulation of
Ca2+-dependent exocytosis in neurons and recently has
been implicated in tight junction maintenance in
mammalian epithelium. Small GTPases cluster into
distinct families, and all act as molecular switches,
active in their GTP-bound form but inactive when
GDP-bound. The Rho family of GTPases activates effectors
involved in a wide variety of developmental processes,
including regulation of cytoskeleton formation, cell
proliferation and the JNK signaling pathway. GTPases
generally have a low intrinsic GTPase hydrolytic
activity but there are family-specific groups of GAPs
that enhance the rate of GTP hydrolysis by several
orders of magnitude.
Length = 203
Score = 47.5 bits (113), Expect = 4e-06
Identities = 28/112 (25%), Positives = 53/112 (47%), Gaps = 11/112 (9%)
Query: 40 GLSAANLFE-PGNASQVAELFHAYSG------EIKSYNFSKLEPALLAIMLKTYLKSLTE 92
G++ LF G AS++ L A + Y+ +P +A LK+YL+ L +
Sbjct: 35 GMNEEGLFRVGGGASKLKRLKAALDAGTFSLPLDEFYS----DPHAVASALKSYLRELPD 90
Query: 93 PLIPYVYYEKFVSLLSGSNDRHIGSRLFALVQDFPAHHFSALRYLMAHLARM 144
PL+ Y YE +V + ++ ++ ++ P + LRYL+ L+++
Sbjct: 91 PLLTYNLYEDWVQAANKPDEDERLQAIWRILNKLPRENRDNLRYLIKFLSKL 142
>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 = 45.0 bits (106), Expect = 4e-06
Identities = 27/87 (31%), Positives = 46/87 (52%), Gaps = 8/87 (9%)
Query: 217 WYWGDISRDDVNDKLADTAD--GTFLVRDTSTKNGEYTLTLR-----KGGTNKLIKIFH- 268
WY+G + R D +L + GTFL+R++ T G Y+L++R KG K KI
Sbjct: 5 WYFGKLGRKDAERQLLSFGNPRGTFLIRESETTKGAYSLSIRDWDDMKGDHVKHYKIRKL 64
Query: 269 RNGRYGFSEPFKFTSVVELINYYKHES 295
NG Y + +F ++ +L+ +Y ++
Sbjct: 65 DNGGYYITTRAQFETLQQLVQHYSEKA 91
Score = 35.4 bits (81), Expect = 0.012
Identities = 30/91 (32%), Positives = 44/91 (48%), Gaps = 9/91 (9%)
Query: 416 SGEKTWLVRMSRAQAE-ALLS-GRPDGTFLIRPS--TTGQYALSI-----VCSGAPKHCL 466
E+ + ++ R AE LLS G P GTFLIR S T G Y+LSI + KH
Sbjct: 1 QAEEWYFGKLGRKDAERQLLSFGNPRGTFLIRESETTKGAYSLSIRDWDDMKGDHVKHYK 60
Query: 467 VYETERGFGFAEPFNIYPSLGALVLHYAANS 497
+ + + G + + +L LV HY+ +
Sbjct: 61 IRKLDNGGYYITTRAQFETLQQLVQHYSEKA 91
>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 = 45.1 bits (107), Expect = 4e-06
Identities = 30/98 (30%), Positives = 49/98 (50%), Gaps = 4/98 (4%)
Query: 217 WYWGDISRDDVNDKLADTA-DGTFLVRDTSTKNGEYTLTLRKGGTNKLIKIFHRNGRYGF 275
W+ IS + + L DG+FL R + + G++TL++R+G IKI + Y
Sbjct: 2 WFHPVISGIEAENLLKTRGVDGSFLARPSKSNPGDFTLSVRRGDEVTHIKIQNTGDYYDL 61
Query: 276 SEPFKFTSVVELINYY--KHESLSQYNSTLDTRLLYPV 311
KF ++ EL+ YY +H L + N + L YP+
Sbjct: 62 YGGEKFATLSELVQYYMEQHGQLREKNGDV-IELKYPL 98
Score = 30.4 bits (69), Expect = 0.52
Identities = 28/90 (31%), Positives = 39/90 (43%), Gaps = 7/90 (7%)
Query: 429 QAEALLSGR-PDGTFLIRPS--TTGQYALSIVCSGAPKHCLVYETERGFGFAEPFNIYPS 485
+AE LL R DG+FL RPS G + LS+ H + T + + +
Sbjct: 11 EAENLLKTRGVDGSFLARPSKSNPGDFTLSVRRGDEVTHIKIQNTGDYYDLYGG-EKFAT 69
Query: 486 LGALVLHYAANS--LEEHNDDLKTTLAYPV 513
L LV +Y L E N D+ L YP+
Sbjct: 70 LSELVQYYMEQHGQLREKNGDV-IELKYPL 98
>gnl|CDD|239839 cd04374, RhoGAP_Graf, RhoGAP_Graf: GTPase-activator protein (GAP)
domain for Rho-like GTPases found in GRAF (GTPase
regulator associated with focal adhesion kinase); Graf
is a multi-domain protein, containing SH3 and PH
domains, that binds focal adhesion kinase and influences
cytoskeletal changes mediated by Rho proteins. Graf
exhibits GAP activity toward RhoA and Cdc42, but only
weakly activates Rac1. Small GTPases cluster into
distinct families, and all act as molecular switches,
active in their GTP-bound form but inactive when
GDP-bound. The Rho family of GTPases activates effectors
involved in a wide variety of developmental processes,
including regulation of cytoskeleton formation, cell
proliferation and the JNK signaling pathway. GTPases
generally have a low intrinsic GTPase hydrolytic
activity but there are family-specific groups of GAPs
that enhance the rate of GTP hydrolysis by several
orders of magnitude.
Length = 203
Score = 47.0 bits (112), Expect = 5e-06
Identities = 19/66 (28%), Positives = 34/66 (51%), Gaps = 2/66 (3%)
Query: 83 LKTYLKSLTEPLIPYVYYEKFVSLL-SGSNDRHIGSRLFALVQDFPAHHFSALRYLMAHL 141
LKTYL++L EPL+ Y + F++ S + + + + + +LV P + L L+ HL
Sbjct: 93 LKTYLRNLPEPLMTYELHNDFINAAKSENLESRVNA-IHSLVHKLPEKNREMLELLIKHL 151
Query: 142 ARMCAL 147
+
Sbjct: 152 TNVSDH 157
>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 = 45.1 bits (107), Expect = 6e-06
Identities = 32/110 (29%), Positives = 53/110 (48%), Gaps = 24/110 (21%)
Query: 217 WYWGDISRDDVNDKLAD--TADGTFLVRDTSTKNGEYTLTLRKGGTNKLIKIFH------ 268
W+ G ISRD+ + DG FLVR++ + G + L+L+ G KI H
Sbjct: 7 WFHGGISRDEAARLIRQQGLVDGVFLVRESQSNPGAFVLSLKHGQ-----KIKHYQIIPI 61
Query: 269 -RNGRYGFS---EPFKFTSVVELINYYKHESLSQYNS-TLDTRLLYPVSR 313
G++ F+ KF +++L+ +Y Q N+ +L TRL + +R
Sbjct: 62 EDEGQWYFTLDDGVTKFYDLLQLVEFY------QLNAGSLPTRLKHYCTR 105
Score = 35.1 bits (81), Expect = 0.015
Identities = 17/54 (31%), Positives = 25/54 (46%), Gaps = 4/54 (7%)
Query: 424 RMSRAQAEALL--SGRPDGTFLIRPSTT--GQYALSIVCSGAPKHCLVYETERG 473
+SR +A L+ G DG FL+R S + G + LS+ KH + E
Sbjct: 11 GISRDEAARLIRQQGLVDGVFLVRESQSNPGAFVLSLKHGQKIKHYQIIPIEDE 64
>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 = 44.6 bits (105), Expect = 6e-06
Identities = 27/97 (27%), Positives = 52/97 (53%), Gaps = 3/97 (3%)
Query: 217 WYWGDISRDDVNDKLADTADGTFLVRDTSTKNGEYTLTLRKG-GTNKLIKIFHRNGRYGF 275
WY G ISR + +L + ++LVR++ + N +Y++ L+ G +I ++ +Y
Sbjct: 3 WYHGSISRAEAESRLQPCKEASYLVRNSESGNSKYSIALKTSQGCVHIIVAQTKDNKYTL 62
Query: 276 SEPFK-FTSVVELINYYKHESLSQYNSTLDTRLLYPV 311
++ F S+ E+++YY +E L + LL+PV
Sbjct: 63 NQTSAVFDSIPEVVHYYSNEKLP-FKGAEHMTLLHPV 98
Score = 39.6 bits (92), Expect = 3e-04
Identities = 25/96 (26%), Positives = 50/96 (52%), Gaps = 12/96 (12%)
Query: 425 MSRAQAEALLSGRPDGTFLIRPSTTG--QYALSIVCSGAPKHCLVYET-ERGFGFAEPFN 481
+SRA+AE+ L + ++L+R S +G +Y++++ S H +V +T + + +
Sbjct: 8 ISRAEAESRLQPCKEASYLVRNSESGNSKYSIALKTSQGCVHIIVAQTKDNKYTLNQTSA 67
Query: 482 IYPSLGALVLHYAANSL----EEHNDDLKTTLAYPV 513
++ S+ +V +Y+ L EH TL +PV
Sbjct: 68 VFDSIPEVVHYYSNEKLPFKGAEH-----MTLLHPV 98
>gnl|CDD|239871 cd04406, RhoGAP_myosin_IXA, RhoGAP_myosin_IXA: RhoGAP
(GTPase-activator protein [GAP] for Rho-like small
GTPases) domain present in myosins IXA. Class IX myosins
contain a characteristic head domain, a neck domain and
a tail domain which contains a C6H2-zinc binding motif
and a Rho-GAP domain. Class IX myosins are
single-headed, processive myosins that are partly
cytoplasmic, and partly associated with membranes and
the actin cytoskeleton. Class IX myosins are implicated
in the regulation of neuronal morphogenesis and function
of sensory systems, like the inner ear. There are two
major isoforms, myosin IXA and IXB with several splice
variants, which are both expressed in developing
neurons. Small GTPases cluster into distinct families,
and all act as molecular switches, active in their
GTP-bound form but inactive when GDP-bound. The Rho
family of GTPases activates effectors involved in a wide
variety of developmental processes, including regulation
of cytoskeleton formation, cell proliferation and the
JNK signaling pathway. GTPases generally have a low
intrinsic GTPase hydrolytic activity but there are
family-specific groups of GAPs that enhance the rate of
GTP hydrolysis by several orders of magnitude.
Length = 186
Score = 46.1 bits (109), Expect = 9e-06
Identities = 24/99 (24%), Positives = 47/99 (47%), Gaps = 1/99 (1%)
Query: 50 GNASQVAELFHAYSGEIKSYNFSKLEPALLAIMLKTYLKSLTEPLIPYVYYEKFVSLLSG 109
G+ +++ EL + S N ++A + K +L+ L PL+ + YE+F+ +
Sbjct: 41 GSTNKIKELRQGLDTDANSVNLDDYNIHVIASVFKQWLRDLPNPLMTFELYEEFLRAMGL 100
Query: 110 SNDRHIGSRLFALVQDFPAHHFSALRYLMAHLARMCALQ 148
R +++++ H + L L+ HL R+ ALQ
Sbjct: 101 QERRETVRGVYSVIDQLSRTHLNTLERLIFHLVRI-ALQ 138
>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 = 44.5 bits (105), Expect = 1e-05
Identities = 26/101 (25%), Positives = 46/101 (45%), Gaps = 4/101 (3%)
Query: 217 WYWGDISRDDVNDKLADTADGTFLVRDTSTKNGEYTLT-LRKGGTNKLIKIFHRNGRYGF 275
W+ GDIS + ++L +GTFLVR ++++ G YT++ + K G +I G++
Sbjct: 12 WFHGDISTSESENRLNGKPEGTFLVRFSTSEPGAYTISKVSKNGGISHQRIHRPGGKFQV 71
Query: 276 SEPFKFTSVVELINYYKHESLSQYNSTLDTRLLYPVSRFSS 316
+ K+ SV ELI ++ P+
Sbjct: 72 NN-SKYLSVKELIA--GEAQALGIDTPCLGSRFLPLIYKMQ 109
Score = 36.0 bits (83), Expect = 0.007
Identities = 17/43 (39%), Positives = 27/43 (62%), Gaps = 3/43 (6%)
Query: 425 MSRAQAEALLSGRPDGTFLIRPSTT--GQYALSIVCSGAP-KH 464
+S +++E L+G+P+GTFL+R ST+ G Y +S V H
Sbjct: 17 ISTSESENRLNGKPEGTFLVRFSTSEPGAYTISKVSKNGGISH 59
>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 = 44.0 bits (104), Expect = 1e-05
Identities = 23/79 (29%), Positives = 43/79 (54%), Gaps = 6/79 (7%)
Query: 217 WYWGDISRDDVNDKLADTADGTFLVRDTSTKNGEYTLTLRKGGTNKLIKIFH-RNGRY-- 273
WY G I+R + L +G++LVR++ + +Y+L+L+ ++I G+Y
Sbjct: 3 WYHGAITRIEAESLLRPCKEGSYLVRNSESTKQDYSLSLKSAKGFMHMRIQRNETGQYIL 62
Query: 274 -GFSEPFKFTSVVELINYY 291
FS PF+ ++ E+I +Y
Sbjct: 63 GQFSRPFE--TIPEMIRHY 79
Score = 40.9 bits (96), Expect = 1e-04
Identities = 28/99 (28%), Positives = 47/99 (47%), Gaps = 18/99 (18%)
Query: 425 MSRAQAEALLSGRPDGTFLIRPSTTGQ--YALSIVCSGAPKHCLVYETERG---FG-FAE 478
++R +AE+LL +G++L+R S + + Y+LS+ + H + E G G F+
Sbjct: 8 ITRIEAESLLRPCKEGSYLVRNSESTKQDYSLSLKSAKGFMHMRIQRNETGQYILGQFSR 67
Query: 479 PFNIYPSLGALVLHYAANSL----EEHNDDLKTTLAYPV 513
PF ++ ++ HY N L EH L PV
Sbjct: 68 PF---ETIPEMIRHYCLNKLPVRGAEH-----MCLLEPV 98
>gnl|CDD|239837 cd04372, RhoGAP_chimaerin, RhoGAP_chimaerin: RhoGAP
(GTPase-activator protein [GAP] for Rho-like small
GTPases) domain of chimaerins. Chimaerins are a family
of phorbolester- and diacylglycerol-responsive GAPs
specific for the Rho-like GTPase Rac. Chimaerins exist
in two alternative splice forms that each contain a
C-terminal GAP domain, and a central C1 domain which
binds phorbol esters, inducing a conformational change
that activates the protein; one splice form is lacking
the N-terminal Src homology-2 (SH2) domain. Small
GTPases cluster into distinct families, and all act as
molecular switches, active in their GTP-bound form but
inactive when GDP-bound. The Rho family of GTPases
activates effectors involved in a wide variety of
developmental processes, including regulation of
cytoskeleton formation, cell proliferation and the JNK
signaling pathway. GTPases generally have a low
intrinsic GTPase hydrolytic activity but there are
family-specific groups of GAPs that enhance the rate of
GTP hydrolysis by several orders of magnitude.
Length = 194
Score = 45.6 bits (108), Expect = 1e-05
Identities = 23/68 (33%), Positives = 30/68 (44%), Gaps = 1/68 (1%)
Query: 83 LKTYLKSLTEPLIPYVYYEKFVSLLSGSNDRHIGSRLFALVQDFPAHHFSALRYLMAHLA 142
LK Y + L P+I Y Y KF+ SN + + P H+ LRYLM HL
Sbjct: 78 LKLYFRDLPIPVITYDTYPKFIDAAKISNPDERLEAVHEALMLLPPAHYETLRYLMEHLK 137
Query: 143 RMCALQYA 150
R+ L
Sbjct: 138 RV-TLHEK 144
>gnl|CDD|239858 cd04393, RhoGAP_FAM13A1a, RhoGAP_FAM13A1a: RhoGAP (GTPase-activator
protein [GAP] for Rho-like small GTPases) domain of
FAM13A1, isoform a-like proteins. The function of
FAM13A1a is unknown. Small GTPases cluster into distinct
families, and all act as molecular switches, active in
their GTP-bound form but inactive when GDP-bound. The
Rho family of GTPases activates effectors involved in a
wide variety of developmental processes, including
regulation of cytoskeleton formation, cell proliferation
and the JNK signaling pathway. GTPases generally have a
low intrinsic GTPase hydrolytic activity but there are
family-specific groups of GAPs that enhance the rate of
GTP hydrolysis by up several orders of magnitude.
Length = 189
Score = 45.5 bits (108), Expect = 1e-05
Identities = 32/111 (28%), Positives = 50/111 (45%), Gaps = 6/111 (5%)
Query: 40 GLSAANLFE-PGNASQVAELFHAY-SGEIKSYNFSKLEPALLAI-MLKTYLKSLTEPLIP 96
GL LF GNA V L SGE + SK A +L+ +L+ L E LIP
Sbjct: 35 GLEQEGLFRVNGNAETVEWLRQRLDSGEEV--DLSKEADVCSAASLLRLFLQELPEGLIP 92
Query: 97 YVYYEKFVSLLS-GSNDRHIGSRLFALVQDFPAHHFSALRYLMAHLARMCA 146
+ + L + + G +L L+Q P ++S L++L L+ + +
Sbjct: 93 ASLQIRLMQLYQDYNGEDEFGRKLRDLLQQLPPVNYSLLKFLCHFLSNVAS 143
>gnl|CDD|239860 cd04395, RhoGAP_ARHGAP21, RhoGAP_ARHGAP21: RhoGAP (GTPase-activator
protein [GAP] for Rho-like small GTPases) domain of
ArhGAP21-like proteins. ArhGAP21 is a multi-domain
protein, containing RhoGAP, PH and PDZ domains, and is
believed to play a role in the organization of the
cell-cell junction complex. It has been shown to
function as a GAP of Cdc42 and RhoA, and to interact
with alpha-catenin and Arf6. Small GTPases cluster into
distinct families, and all act as molecular switches,
active in their GTP-bound form but inactive when
GDP-bound. The Rho family of GTPases activates effectors
involved in a wide variety of developmental processes,
including regulation of cytoskeleton formation, cell
proliferation and the JNK signaling pathway. GTPases
generally have a low intrinsic GTPase hydrolytic
activity but there are family-specific groups of GAPs
that enhance the rate of GTP hydrolysis by several
orders of magnitude.
Length = 196
Score = 45.5 bits (108), Expect = 2e-05
Identities = 18/64 (28%), Positives = 30/64 (46%), Gaps = 4/64 (6%)
Query: 82 MLKTYLKSLTEPLIPYVYYEKFVSL--LSGSNDRHIGSRLFALVQDFPAHHFSALRYLMA 139
+LK++ + L EPL Y F+ + +R L L+ P HH+ L++L+
Sbjct: 79 LLKSFFRKLPEPLFTNELYPDFIEANRIEDPVERLK--ELRRLIHSLPDHHYETLKHLIR 136
Query: 140 HLAR 143
HL
Sbjct: 137 HLKT 140
>gnl|CDD|239853 cd04388, RhoGAP_p85, RhoGAP_p85: RhoGAP (GTPase-activator protein
[GAP] for Rho-like small GTPases) domain present in the
p85 isoforms of the regulatory subunit of the class IA
PI3K (phosphatidylinositol 3'-kinase). This domain is
also called Bcr (breakpoint cluster region protein)
homology (BH) domain. Class IA PI3Ks are heterodimers,
containing a regulatory subunit (p85) and a catalytic
subunit (p110) and are activated by growth factor
receptor tyrosine kinases (RTKs); this activation is
mediated by the p85 subunit. p85 isoforms, alpha and
beta, contain a C-terminal p110-binding domain flanked
by two SH2 domains, an N-terminal SH3 domain, and a
RhoGAP domain flanked by two proline-rich regions. Small
GTPases cluster into distinct families, and all act as
molecular switches, active in their GTP-bound form but
inactive when GDP-bound. The Rho family of GTPases
activates effectors involved in a wide variety of
developmental processes, including regulation of
cytoskeleton formation, cell proliferation and the JNK
signaling pathway. GTPases generally have a low
intrinsic GTPase hydrolytic activity but there are
family-specific groups of GAPs that enhance the rate of
GTP hydrolysis by several orders of magnitude.
Length = 200
Score = 45.3 bits (107), Expect = 2e-05
Identities = 30/109 (27%), Positives = 51/109 (46%), Gaps = 3/109 (2%)
Query: 40 GLSAANLFEPGNASQVAELFHAYSGEIKSYNFSKLEPALLAIMLKTYLKSLTEPLIPYVY 99
GL ++ L+ ++S + EL + S + + + A LA LK YL L P+IP
Sbjct: 30 GLESSTLYRTQSSSSLTELRQILDCDAASVDLEQFDVAALADALKRYLLDLPNPVIPAPV 89
Query: 100 YEKFVSLL--SGSNDRHIGS-RLFALVQDFPAHHFSALRYLMAHLARMC 145
Y + +S S+D + R + P ++ L+YL+ H R+C
Sbjct: 90 YSEMISRAQEVQSSDEYAQLLRKLIRSPNLPHQYWLTLQYLLKHFFRLC 138
>gnl|CDD|239838 cd04373, RhoGAP_p190, RhoGAP_p190: RhoGAP (GTPase-activator protein
[GAP] for Rho-like small GTPases) domain of p190-like
proteins. p190, also named RhoGAP5, plays a role in
neuritogenesis and axon branch stability. p190 shows a
preference for Rho, over Rac and Cdc42, and consists of
an N-terminal GTPase domain and a C-terminal GAP domain.
The central portion of p190 contains important
regulatory phosphorylation sites. Small GTPases cluster
into distinct families, and all act as molecular
switches, active in their GTP-bound form but inactive
when GDP-bound. The Rho family of GTPases activates
effectors involved in a wide variety of developmental
processes, including regulation of cytoskeleton
formation, cell proliferation and the JNK signaling
pathway. GTPases generally have a low intrinsic GTPase
hydrolytic activity but there are family-specific groups
of GAPs that enhance the rate of GTP hydrolysis by
several orders of magnitude.
Length = 185
Score = 44.8 bits (106), Expect = 2e-05
Identities = 28/112 (25%), Positives = 52/112 (46%), Gaps = 10/112 (8%)
Query: 38 DCGLSAANLFE-PGNASQVAELFHAYSGEIKSYNFSKLEPAL--LAIMLKTYLKSLTEPL 94
GL ++ GN + + L + + + + + + +A LK++ L +PL
Sbjct: 28 ATGLETEGIYRVSGNKTHLDSLQKQFD-QDHNLDLVSKDFTVNAVAGALKSFFSELPDPL 86
Query: 95 IPYVYYEKFVSLLSGSNDRHIGSRLFAL---VQDFPAHHFSALRYLMAHLAR 143
IPY + + V + NDR RL AL ++ FP +F +Y++ HL +
Sbjct: 87 IPYSMHLELVE-AAKINDRE--QRLHALKELLKKFPPENFDVFKYVITHLNK 135
>gnl|CDD|239842 cd04377, RhoGAP_myosin_IX, RhoGAP_myosin_IX: RhoGAP
(GTPase-activator protein [GAP] for Rho-like small
GTPases) domain present in class IX myosins. Class IX
myosins contain a characteristic head domain, a neck
domain, a tail domain which contains a C6H2-zinc binding
motif and a RhoGAP domain. Class IX myosins are
single-headed, processive myosins that are partly
cytoplasmic, and partly associated with membranes and
the actin cytoskeleton. Class IX myosins are implicated
in the regulation of neuronal morphogenesis and function
of sensory systems, like the inner ear. There are two
major isoforms, myosin IXA and IXB with several splice
variants, which are both expressed in developing
neurons. Small GTPases cluster into distinct families,
and all act as molecular switches, active in their
GTP-bound form but inactive when GDP-bound. The Rho
family of GTPases activates effectors involved in a wide
variety of developmental processes, including regulation
of cytoskeleton formation, cell proliferation and the
JNK signaling pathway. GTPases generally have a low
intrinsic GTPase hydrolytic activity but there are
family-specific groups of GAPs that enhance the rate of
GTP hydrolysis by several orders of magnitude.
Length = 186
Score = 44.7 bits (106), Expect = 2e-05
Identities = 26/99 (26%), Positives = 50/99 (50%), Gaps = 1/99 (1%)
Query: 50 GNASQVAELFHAYSGEIKSYNFSKLEPALLAIMLKTYLKSLTEPLIPYVYYEKFVSLLSG 109
G+A+++ EL + S N ++ +LK +L+ L EPL+ + YE F+ +
Sbjct: 41 GSANKIKELRQGLDTDPDSVNLEDYPIHVITSVLKQWLRELPEPLMTFELYENFLRAMEL 100
Query: 110 SNDRHIGSRLFALVQDFPAHHFSALRYLMAHLARMCALQ 148
+ L+++++ P + + L L+ HL R+ ALQ
Sbjct: 101 EEKQERVRALYSVLEQLPRANLNTLERLIFHLVRV-ALQ 138
>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 = 42.9 bits (101), Expect = 3e-05
Identities = 29/87 (33%), Positives = 45/87 (51%), Gaps = 10/87 (11%)
Query: 421 WL-VRMSRAQAEALLS--GRPDGTFLIRPSTT--GQYALSIVCSGAP-----KHCLVYET 470
WL +SR +AE LL G G+FLIR S T G Y+LS+ G+ KH ++
Sbjct: 12 WLFEGLSREKAEELLMLPGNQVGSFLIRESETRRGCYSLSVRHRGSQSRDSVKHYRIFRL 71
Query: 471 ERGFGFAEPFNIYPSLGALVLHYAANS 497
+ G+ + P + L +V HY+ ++
Sbjct: 72 DNGWFYISPRLTFQCLEDMVNHYSESA 98
Score = 40.2 bits (94), Expect = 2e-04
Identities = 21/83 (25%), Positives = 41/83 (49%), Gaps = 8/83 (9%)
Query: 217 WYWGDISRDDVND--KLADTADGTFLVRDTSTKNGEYTLTLRKGGTNKLIKIFH------ 268
W + +SR+ + L G+FL+R++ T+ G Y+L++R G+ + H
Sbjct: 12 WLFEGLSREKAEELLMLPGNQVGSFLIRESETRRGCYSLSVRHRGSQSRDSVKHYRIFRL 71
Query: 269 RNGRYGFSEPFKFTSVVELINYY 291
NG + S F + +++N+Y
Sbjct: 72 DNGWFYISPRLTFQCLEDMVNHY 94
>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 = 42.0 bits (99), Expect = 3e-05
Identities = 24/81 (29%), Positives = 42/81 (51%), Gaps = 9/81 (11%)
Query: 216 EWYWGDISRDDVNDKLADTA-DGTFLVRDTSTKNGEYTLTLRKGGTNKLIKIF----HRN 270
W+ G ISR++ + L G+FLVR++ G+Y+L+ R N+ IK F N
Sbjct: 1 IWFHGKISREEAYNMLVKVGGPGSFLVRESDNTPGDYSLSFR---VNEGIKHFKIIPTGN 57
Query: 271 GRYGFSEPFKFTSVVELINYY 291
++ F+S+ ++I+ Y
Sbjct: 58 NQF-MMGGRYFSSLDDVIDRY 77
Score = 34.3 bits (79), Expect = 0.017
Identities = 21/73 (28%), Positives = 33/73 (45%), Gaps = 4/73 (5%)
Query: 424 RMSRAQAEALL-SGRPDGTFLIRPS--TTGQYALSIVCSGAPKHCLVYETERGFGFAEPF 480
++SR +A +L G+FL+R S T G Y+LS + KH + T F
Sbjct: 6 KISREEAYNMLVKVGGPGSFLVRESDNTPGDYSLSFRVNEGIKHFKIIPTGNN-QFMMGG 64
Query: 481 NIYPSLGALVLHY 493
+ SL ++ Y
Sbjct: 65 RYFSSLDDVIDRY 77
>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 = 43.0 bits (101), Expect = 3e-05
Identities = 35/108 (32%), Positives = 57/108 (52%), Gaps = 16/108 (14%)
Query: 214 DAEWYWGDISRDDVNDKLADTA-DGTFLVRDTSTKNGEYTLTL------RKGGTNKLIKI 266
+W+ G+ISR L +G F+VR++S + G YT++L K GT K +
Sbjct: 5 AYDWFAGNISRSQSEQLLRQKGKEGAFMVRNSS-QVGMYTVSLFSKAVNDKKGTVKHYHV 63
Query: 267 FHRN--GRYGFSEPFKFTSVVELINYYKHESLSQYNSTLDTRLLYPVS 312
H N + +E + F S+ +LI+Y++H S + + TRL +PVS
Sbjct: 64 -HTNAENKLYLAENYCFDSIPKLIHYHQHNS-----AGMITRLRHPVS 105
Score = 33.0 bits (75), Expect = 0.072
Identities = 25/90 (27%), Positives = 42/90 (46%), Gaps = 11/90 (12%)
Query: 418 EKTWLV-RMSRAQAEALLSGR-PDGTFLIRPST-TGQYALSIVC------SGAPKHCLVY 468
W +SR+Q+E LL + +G F++R S+ G Y +S+ G KH V+
Sbjct: 5 AYDWFAGNISRSQSEQLLRQKGKEGAFMVRNSSQVGMYTVSLFSKAVNDKKGTVKHYHVH 64
Query: 469 ET-ERGFGFAEPFNIYPSLGALVLHYAANS 497
E AE + + S+ L+ ++ NS
Sbjct: 65 TNAENKLYLAENY-CFDSIPKLIHYHQHNS 93
>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 = 41.7 bits (98), Expect = 4e-05
Identities = 27/85 (31%), Positives = 38/85 (44%), Gaps = 4/85 (4%)
Query: 208 ETNSLRDAEWYWGDISRDDVNDKLADTADGTFLVRDTST--KNGEYTLTLRKGGTN--KL 263
N L W+ GDISRD+ +L +GTFL+R +ST K +T++ +K K
Sbjct: 3 NINILLAKSWFHGDISRDEAEKRLRGRPEGTFLIRLSSTDPKKTPFTISKKKKSKPVHKR 62
Query: 264 IKIFHRNGRYGFSEPFKFTSVVELI 288
I N F P + V L
Sbjct: 63 ISRIDVNNYTSFKIPGGYAVSVPLD 87
Score = 38.6 bits (90), Expect = 5e-04
Identities = 16/34 (47%), Positives = 22/34 (64%)
Query: 416 SGEKTWLVRMSRAQAEALLSGRPDGTFLIRPSTT 449
+ + +SR +AE L GRP+GTFLIR S+T
Sbjct: 8 LAKSWFHGDISRDEAEKRLRGRPEGTFLIRLSST 41
>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 = 41.6 bits (97), Expect = 7e-05
Identities = 32/97 (32%), Positives = 48/97 (49%), Gaps = 4/97 (4%)
Query: 217 WYWGDISRDDVNDKLADTADGTFLVRDTSTKNGEYTLTLRKGGTNKLIKIFHRNGRY--G 274
WY G ISR D + L + ++LVR++ T +Y+L+L+ +K+ +Y G
Sbjct: 3 WYHGAISRGDAENLLRLCKECSYLVRNSQTSKHDYSLSLKSNQGFMHMKLAKTKEKYVLG 62
Query: 275 FSEPFKFTSVVELINYYKHESLSQYNSTLDTRLLYPV 311
+ P F SV E+I+YY L LLYPV
Sbjct: 63 QNSP-PFDSVPEVIHYYTTRKLP-IKGAEHLSLLYPV 97
>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 = 41.2 bits (96), Expect = 7e-05
Identities = 17/32 (53%), Positives = 22/32 (68%)
Query: 425 MSRAQAEALLSGRPDGTFLIRPSTTGQYALSI 456
M R +AEALL G+P+GTFL+R S Y S+
Sbjct: 7 MDRYEAEALLEGKPEGTFLLRDSAQEDYLFSV 38
Score = 33.5 bits (76), Expect = 0.034
Identities = 21/79 (26%), Positives = 42/79 (53%), Gaps = 4/79 (5%)
Query: 218 YWGDISRDDVNDKLADTADGTFLVRDTSTKNGEYTLTLRKGGTNKLIKIFHRNGRYGFS- 276
YWG + R + L +GTFL+RD++ ++ ++++ R+ + +I N + F
Sbjct: 3 YWGVMDRYEAEALLEGKPEGTFLLRDSAQEDYLFSVSFRRYNRSLHARIEQWNHNFSFDA 62
Query: 277 -EP--FKFTSVVELINYYK 292
+P F ++V L+ +YK
Sbjct: 63 HDPCVFHSSTVTGLLEHYK 81
>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 = 40.9 bits (96), Expect = 8e-05
Identities = 24/80 (30%), Positives = 42/80 (52%), Gaps = 5/80 (6%)
Query: 216 EWYWGDISRDDVNDKL--ADTADGTFLVRDTSTKNGEYTLTLRKGGTNKLIKIFHRNGRY 273
+W G + R++ + L ADG+FLVR + + G Y LTL +I +R+ ++
Sbjct: 1 QWLHGALDRNEAVEILKQKADADGSFLVRYSRRRPGGYVLTLVYENHVYHFEIQNRDDKW 60
Query: 274 GFSE--PFKFTSVVELINYY 291
+ + P+ F S+ LI +Y
Sbjct: 61 FYIDDGPY-FESLEHLIEHY 79
Score = 35.9 bits (83), Expect = 0.005
Identities = 19/73 (26%), Positives = 33/73 (45%), Gaps = 4/73 (5%)
Query: 425 MSRAQAEALL--SGRPDGTFLIRPST--TGQYALSIVCSGAPKHCLVYETERGFGFAEPF 480
+ R +A +L DG+FL+R S G Y L++V H + + + + +
Sbjct: 7 LDRNEAVEILKQKADADGSFLVRYSRRRPGGYVLTLVYENHVYHFEIQNRDDKWFYIDDG 66
Query: 481 NIYPSLGALVLHY 493
+ SL L+ HY
Sbjct: 67 PYFESLEHLIEHY 79
>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 = 41.3 bits (97), Expect = 9e-05
Identities = 22/87 (25%), Positives = 45/87 (51%), Gaps = 7/87 (8%)
Query: 212 LRDAEWYWGDISRDDVNDKLADTADGTFLVRDTSTKNGEYTLTLRKGGTNKLIKIFHRNG 271
L+++ +YW +S + N L+ GTFL+RD+S + +TL+++ K ++I G
Sbjct: 7 LQESGFYWSTVSGKEANLLLSAEPAGTFLIRDSSDQRHFFTLSVKTESGTKNLRIQCEGG 66
Query: 272 RY-------GFSEPFKFTSVVELINYY 291
+ +F V++L+++Y
Sbjct: 67 SFSLQTDPRSTQPVPRFDCVLKLVHHY 93
Score = 30.1 bits (68), Expect = 0.85
Identities = 13/24 (54%), Positives = 16/24 (66%)
Query: 425 MSRAQAEALLSGRPDGTFLIRPST 448
+S +A LLS P GTFLIR S+
Sbjct: 17 VSGKEANLLLSAEPAGTFLIRDSS 40
>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 = 41.6 bits (98), Expect = 1e-04
Identities = 31/89 (34%), Positives = 42/89 (47%), Gaps = 25/89 (28%)
Query: 425 MSRAQAEALLSGRPDGTFLIRPSTT--GQYALSIVCSGAP-----------------KHC 465
+SR QA ALL +P GTFL+R STT G Y L++ + P +H
Sbjct: 10 ISRDQAIALLKDKPPGTFLVRDSTTYKGAYGLAVKVATPPPGVNPFEAKGDPESELVRHF 69
Query: 466 LVYETERGF---GFA-EPFNIYPSLGALV 490
L+ + +G G EP + SL ALV
Sbjct: 70 LIEPSPKGVKLKGCPNEPV--FGSLSALV 96
Score = 40.1 bits (94), Expect = 3e-04
Identities = 19/40 (47%), Positives = 24/40 (60%)
Query: 217 WYWGDISRDDVNDKLADTADGTFLVRDTSTKNGEYTLTLR 256
WY +ISRD L D GTFLVRD++T G Y L ++
Sbjct: 5 WYKPNISRDQAIALLKDKPPGTFLVRDSTTYKGAYGLAVK 44
>gnl|CDD|239868 cd04403, RhoGAP_ARHGAP27_15_12_9, RhoGAP_ARHGAP27_15_12_9:
GTPase-activator protein (GAP) domain for Rho-like
GTPases found in ARHGAP27 (also called CAMGAP1),
ARHGAP15, 12 and 9-like proteins; This subgroup of
ARHGAPs are multidomain proteins that contain RhoGAP,
PH, SH3 and WW domains. Most members that are studied
show GAP activity towards Rac1, some additionally show
activity towards Cdc42. Small GTPases cluster into
distinct families, and all act as molecular switches,
active in their GTP-bound form but inactive when
GDP-bound. The Rho family of GTPases activates effectors
involved in a wide variety of developmental processes,
including regulation of cytoskeleton formation, cell
proliferation and the JNK signaling pathway. GTPases
generally have a low intrinsic GTPase hydrolytic
activity but there are family-specific groups of GAPs
that enhance the rate of GTP hydrolysis by several
orders of magnitude.
Length = 187
Score = 42.8 bits (101), Expect = 1e-04
Identities = 19/64 (29%), Positives = 31/64 (48%)
Query: 83 LKTYLKSLTEPLIPYVYYEKFVSLLSGSNDRHIGSRLFALVQDFPAHHFSALRYLMAHLA 142
LK + + L EPL PY + FV+ + S+ S + L++ P + L+ L HL
Sbjct: 77 LKLFFRELPEPLFPYSLFNDFVAAIKLSDYEQRVSAVKDLIKSLPKPNHDTLKMLFRHLC 136
Query: 143 RMCA 146
R+
Sbjct: 137 RVIE 140
>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 = 40.6 bits (95), Expect = 2e-04
Identities = 26/82 (31%), Positives = 42/82 (51%), Gaps = 3/82 (3%)
Query: 215 AEWYWGDISRDDVNDKLADTADGTFLVRDTSTKNGEYTLTLRKGGTNKLIKIFHRNGRYG 274
A W+ G ISR++ L + +G+FLVR S K YTL+ R K + Y
Sbjct: 7 APWFHGIISREEAEALLMNATEGSFLVR-VSEKIWGYTLSYRLQSGFKHFLVDASGDFYS 65
Query: 275 F--SEPFKFTSVVELINYYKHE 294
F +P + ++ +LI+++K E
Sbjct: 66 FLGVDPNRHATLTDLIDFHKEE 87
Score = 32.6 bits (74), Expect = 0.13
Identities = 19/44 (43%), Positives = 24/44 (54%), Gaps = 1/44 (2%)
Query: 425 MSRAQAEALLSGRPDGTFLIRPS-TTGQYALSIVCSGAPKHCLV 467
+SR +AEALL +G+FL+R S Y LS KH LV
Sbjct: 14 ISREEAEALLMNATEGSFLVRVSEKIWGYTLSYRLQSGFKHFLV 57
>gnl|CDD|198225 cd10362, SH2_Src_Lck, Src homology 2 (SH2) domain in lymphocyte
cell kinase (Lck). Lck is a member of the Src
non-receptor type tyrosine kinase family of proteins. It
is expressed in the brain, T-cells, and NK cells. The
unique domain of Lck mediates its interaction with two
T-cell surface molecules, CD4 and CD8. It associates
with their cytoplasmic tails on CD4 T helper cells and
CD8 cytotoxic T cells to assist signaling from the T
cell receptor (TCR) complex. When the T cell receptor is
engaged by the specific antigen presented by MHC, Lck
phosphorylase the intracellular chains of the CD3 and
zeta-chains of the TCR complex, allowing ZAP-70 to bind
them. Lck then phosphorylates and activates ZAP-70,
which in turn phosphorylates Linker of Activated T cells
(LAT), a transmembrane protein that serves as a docking
site for proteins including: Shc-Grb2-SOS, PI3K, and
phospholipase C (PLC). The tyrosine phosphorylation
cascade culminates in the intracellular mobilization of
a calcium ions and activation of important signaling
cascades within the lymphocyte, including the
Ras-MEK-ERK pathway, which goes on to activate certain
transcription factors such as NFAT, NF-kappaB, and AP-1.
These transcription factors regulate the production
cytokines such as Interleukin-2 that promote long-term
proliferation and differentiation of the activated
lymphocytes. The N-terminal tail of Lck is
myristoylated and palmitoylated and it tethers the
protein to the plasma membrane of the cell. Lck also
contains a SH3 domain, a SH2 domain, and a C-terminal
tyrosine kinase domain. Lck has 2 phosphorylation sites,
the first an autophosphorylation site that is linked to
activation of the protein and the second which is
phosphorylated by Csk, which inhibits it. Lck is also
inhibited by SHP-1 dephosphorylation and by Cbl
ubiquitin ligase, which is part of the
ubiquitin-mediated pathway. 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 = 40.2 bits (94), Expect = 2e-04
Identities = 30/103 (29%), Positives = 52/103 (50%), Gaps = 13/103 (12%)
Query: 216 EWYWGDISRDDVNDKLADTAD--GTFLVRDTSTKNGEYTLTLR-----KGGTNKLIKIFH 268
W++ ++SR+D +L + G+FL+R++ T G ++L++R +G K KI +
Sbjct: 4 PWFFKNLSRNDAERQLLAPGNTHGSFLIRESETTAGSFSLSVRDFDQNQGEVVKHYKIRN 63
Query: 269 -RNGRYGFSEPFKFTSVVELINYYKHESLSQYNSTLDTRLLYP 310
NG + S F + EL+ +Y + S L TRL P
Sbjct: 64 LDNGGFYISPRITFPGLHELVRHYTNAS-----DGLCTRLSRP 101
Score = 32.5 bits (74), Expect = 0.097
Identities = 33/104 (31%), Positives = 44/104 (42%), Gaps = 14/104 (13%)
Query: 418 EKTWLVRMSRAQAEALLS--GRPDGTFLIRPSTT--GQYALSI-----VCSGAPKHCLVY 468
E + +SR AE L G G+FLIR S T G ++LS+ KH +
Sbjct: 3 EPWFFKNLSRNDAERQLLAPGNTHGSFLIRESETTAGSFSLSVRDFDQNQGEVVKHYKIR 62
Query: 469 ETERGFGFAEPFNIYPSLGALVLHYAANSLEEHNDDLKTTLAYP 512
+ G + P +P L LV HY S D L T L+ P
Sbjct: 63 NLDNGGFYISPRITFPGLHELVRHYTNAS-----DGLCTRLSRP 101
>gnl|CDD|239846 cd04381, RhoGap_RalBP1, RhoGap_RalBP1: RhoGAP (GTPase-activator
protein [GAP] for Rho-like small GTPases) domain present
in RalBP1 proteins, also known as RLIP, RLIP76 or
cytocentrin. RalBP1 plays an important role in
endocytosis during interphase. During mitosis, RalBP1
transiently associates with the centromere and has been
shown to play an essential role in the proper assembly
of the mitotic apparatus. RalBP1 is an effector of the
Ral GTPase which itself is an effector of Ras. RalBP1
contains a RhoGAP domain, which shows weak activity
towards Rac1 and Cdc42, but not towards Ral, and a Ral
effector domain binding motif. Small GTPases cluster
into distinct families, and all act as molecular
switches, active in their GTP-bound form but inactive
when GDP-bound. The Rho family of GTPases activates
effectors involved in a wide variety of developmental
processes, including regulation of cytoskeleton
formation, cell proliferation and the JNK signaling
pathway. GTPases generally have a low intrinsic GTPase
hydrolytic activity but there are family-specific groups
of GAPs that enhance the rate of GTP hydrolysis by
several orders of magnitude.
Length = 182
Score = 41.7 bits (98), Expect = 3e-04
Identities = 36/125 (28%), Positives = 58/125 (46%), Gaps = 10/125 (8%)
Query: 49 PGNASQVAELFHAYSGEIKSYNFSKLEPALLAIMLKTYLKSLTEPLIPYVYYEKFVSLLS 108
G S+V EL AY+ +S N + EP +A +LK YL+ L EPL+ +F
Sbjct: 45 SGIKSKVDELKAAYNRR-ESPNLEEYEPPTVASLLKQYLRELPEPLLTKELMPRFEEACG 103
Query: 109 GSNDRHIGSRLFALVQDFPAHHFSALRYLMAHLARMCALQYARGVREPPTIL-IQSFTFV 167
+ L L+++ P + L +L+ H+ + A +E T + IQ+ + V
Sbjct: 104 RPTEAEREQELQRLLKELPECNRLLLAWLIVHMDHVIA-------QELETKMNIQNISIV 156
Query: 168 L-PTF 171
L PT
Sbjct: 157 LSPTV 161
>gnl|CDD|239848 cd04383, RhoGAP_srGAP, RhoGAP_srGAP: RhoGAP (GTPase-activator
protein [GAP] for Rho-like small GTPases) domain present
in srGAPs. srGAPs are components of the intracellular
part of Slit-Robo signalling pathway that is important
for axon guidance and cell migration. srGAPs contain an
N-terminal FCH domain, a central RhoGAP domain and a
C-terminal SH3 domain; this SH3 domain interacts with
the intracellular proline-rich-tail of the Roundabout
receptor (Robo). This interaction with Robo then
activates the rhoGAP domain which in turn inhibits Cdc42
activity. Small GTPases cluster into distinct families,
and all act as molecular switches, active in their
GTP-bound form but inactive when GDP-bound. The Rho
family of GTPases activates effectors involved in a wide
variety of developmental processes, including regulation
of cytoskeleton formation, cell proliferation and the
JNK signaling pathway. GTPases generally have a low
intrinsic GTPase hydrolytic activity but there are
family-specific groups of GAPs that enhance the rate of
GTP hydrolysis by several orders of magnitude.
Length = 188
Score = 41.6 bits (98), Expect = 3e-04
Identities = 18/71 (25%), Positives = 31/71 (43%), Gaps = 2/71 (2%)
Query: 80 AIMLKTYLKSLTEPLIPYVYYEKFVSLLSGSNDRHIGSRLFALVQDFPAHHFSALRYLMA 139
A +LK Y + L PL P +E +S + N ++ ++ P +RYL A
Sbjct: 76 AGVLKLYFRGLENPLFPKERFEDLMSCVKLENPTERVHQIREILSTLPRSVIIVMRYLFA 135
Query: 140 HLARMCALQYA 150
L + Q++
Sbjct: 136 FLNHLS--QFS 144
>gnl|CDD|239859 cd04394, RhoGAP-ARHGAP11A, RhoGAP-ARHGAP11A: RhoGAP
(GTPase-activator protein [GAP] for Rho-like small
GTPases) domain of ArhGAP11A-like proteins. The mouse
homolog of human ArhGAP11A has been detected as a gene
exclusively expressed in immature ganglion cells,
potentially playing a role in retinal development. The
exact function of ArhGAP11A is unknown. Small GTPases
cluster into distinct families, and all act as molecular
switches, active in their GTP-bound form but inactive
when GDP-bound. The Rho family of GTPases activates
effectors involved in a wide variety of developmental
processes, including regulation of cytoskeleton
formation, cell proliferation and the JNK signaling
pathway. GTPases generally have a low intrinsic GTPase
hydrolytic activity but there are family-specific groups
of GAPs that enhance the rate of GTP hydrolysis by
several orders of magnitude.
Length = 202
Score = 41.7 bits (98), Expect = 3e-04
Identities = 21/72 (29%), Positives = 30/72 (41%)
Query: 72 SKLEPALLAIMLKTYLKSLTEPLIPYVYYEKFVSLLSGSNDRHIGSRLFALVQDFPAHHF 131
S P +A +LK + + L EPL+PY +E + D S L P H
Sbjct: 65 SSALPCDVAGLLKQFFRELPEPLLPYDLHEALLKAQELPTDEERKSATLLLTCLLPDEHV 124
Query: 132 SALRYLMAHLAR 143
+ LRY + L
Sbjct: 125 NTLRYFFSFLYD 136
>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 = 40.4 bits (95), Expect = 4e-04
Identities = 27/91 (29%), Positives = 42/91 (46%), Gaps = 16/91 (17%)
Query: 212 LRDAEWYWGDISRDDVNDKLADT---ADGTFLVRDTSTKNGEYTLTLRKGGTNKLIKIF- 267
LR WY G I R ++A++ +G FLVRD+ + G+Y LT R G KI
Sbjct: 3 LRSHAWYHGRIPR-----QVAESLVQREGDFLVRDSLSSPGDYVLTCRWKGQPLHFKINR 57
Query: 268 -HRNGRYGFS------EPFKFTSVVELINYY 291
++ E +F S+ L+++Y
Sbjct: 58 VVLRPSEAYTRVQYQFEDEQFDSIPALVHFY 88
>gnl|CDD|239847 cd04382, RhoGAP_MgcRacGAP, RhoGAP_MgcRacGAP: RhoGAP
(GTPase-activator protein [GAP] for Rho-like small
GTPases) domain present in MgcRacGAP proteins. MgcRacGAP
plays an important dual role in cytokinesis: i) it is
part of centralspindlin-complex, together with the
mitotic kinesin MKLP1, which is critical for the
structure of the central spindle by promoting microtuble
bundling. ii) after phosphorylation by aurora B
MgcRacGAP becomes an effective regulator of RhoA and
plays an important role in the assembly of the
contractile ring and the initiation of cytokinesis.
MgcRacGAP-like proteins contain a N-terminal C1-like
domain, and a C-terminal RhoGAP domain. Small GTPases
cluster into distinct families, and all act as molecular
switches, active in their GTP-bound form but inactive
when GDP-bound. The Rho family of GTPases activates
effectors involved in a wide variety of developmental
processes, including regulation of cytoskeleton
formation, cell proliferation and the JNK signaling
pathway. GTPases generally have a low intrinsic GTPase
hydrolytic activity but there are family-specific groups
of GAPs that enhance the rate of GTP hydrolysis by
several orders of magnitude.
Length = 193
Score = 40.4 bits (95), Expect = 7e-04
Identities = 17/61 (27%), Positives = 34/61 (55%)
Query: 83 LKTYLKSLTEPLIPYVYYEKFVSLLSGSNDRHIGSRLFALVQDFPAHHFSALRYLMAHLA 142
LK +L+SL EPLI + +++F+ ++ + + L+ + + P + L +L+ HL
Sbjct: 76 LKDFLRSLKEPLITFALWKEFMEAAEILDEDNSRAALYQAISELPQPNRDTLAFLILHLQ 135
Query: 143 R 143
R
Sbjct: 136 R 136
>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 = 38.5 bits (89), Expect = 7e-04
Identities = 30/98 (30%), Positives = 50/98 (51%), Gaps = 5/98 (5%)
Query: 217 WYWGDISRDDVNDKLADTADGTFLVRDTSTKNGEYTLTLRKGGTNKLIKIFH-RNGRY-- 273
WY G ISR D + L + ++LVR++ T +++L+L+ +K+ + +Y
Sbjct: 3 WYHGAISRTDAENLLRLCKEASYLVRNSETSKNDFSLSLKSSQGFMHMKLSRTKEHKYVL 62
Query: 274 GFSEPFKFTSVVELINYYKHESLSQYNSTLDTRLLYPV 311
G + P F+SV E+I++Y L LLYPV
Sbjct: 63 GQNSP-PFSSVPEIIHHYASRKLP-IKGAEHMSLLYPV 98
Score = 27.7 bits (61), Expect = 5.4
Identities = 27/96 (28%), Positives = 45/96 (46%), Gaps = 12/96 (12%)
Query: 425 MSRAQAEALLSGRPDGTFLIRPSTTGQ--YALSIVCSGAPKHCLVYET-ERGFGFAEPFN 481
+SR AE LL + ++L+R S T + ++LS+ S H + T E + +
Sbjct: 8 ISRTDAENLLRLCKEASYLVRNSETSKNDFSLSLKSSQGFMHMKLSRTKEHKYVLGQNSP 67
Query: 482 IYPSLGALVLHYAANSL----EEHNDDLKTTLAYPV 513
+ S+ ++ HYA+ L EH +L YPV
Sbjct: 68 PFSSVPEIIHHYASRKLPIKGAEH-----MSLLYPV 98
>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 = 38.3 bits (89), Expect = 0.001
Identities = 27/91 (29%), Positives = 42/91 (46%), Gaps = 3/91 (3%)
Query: 217 WYWGDISRDDVNDKLADTADGTFLVRDTSTKNGEYTLTLRKGGTNKLIKIFH-RNGRYGF 275
W+ G I+R L D A G+FL+R + G Y L+ R + I RN RY
Sbjct: 9 WFHGFITRKQTEQLLRDKALGSFLIRLSDRATG-YILSYRGSDRCRHFVINQLRNRRYLI 67
Query: 276 S-EPFKFTSVVELINYYKHESLSQYNSTLDT 305
S + +++ EL+ +Y+ L + TL
Sbjct: 68 SGDTSSHSTLAELVRHYQEVQLEPFGETLTA 98
Score = 31.8 bits (72), Expect = 0.22
Identities = 27/86 (31%), Positives = 41/86 (47%), Gaps = 4/86 (4%)
Query: 425 MSRAQAEALLSGRPDGTFLIRPS--TTGQYALSIVCSGAPKHCLVYETE-RGFGFAEPFN 481
++R Q E LL + G+FLIR S TG Y LS S +H ++ + R + + +
Sbjct: 14 ITRKQTEQLLRDKALGSFLIRLSDRATG-YILSYRGSDRCRHFVINQLRNRRYLISGDTS 72
Query: 482 IYPSLGALVLHYAANSLEEHNDDLKT 507
+ +L LV HY LE + L
Sbjct: 73 SHSTLAELVRHYQEVQLEPFGETLTA 98
>gnl|CDD|239854 cd04389, RhoGAP_KIAA1688, RhoGAP_KIAA1688: GTPase-activator protein
(GAP) domain for Rho-like GTPases found in KIAA1688-like
proteins; KIAA1688 is a protein of unknown function that
contains a RhoGAP domain and a myosin tail homology 4
(MyTH4) domain. Small GTPases cluster into distinct
families, and all act as molecular switches, active in
their GTP-bound form but inactive when GDP-bound. The
Rho family of GTPases activates effectors involved in a
wide variety of developmental processes, including
regulation of cytoskeleton formation, cell proliferation
and the JNK signaling pathway. GTPases generally have a
low intrinsic GTPase hydrolytic activity but there are
family-specific groups of GAPs that enhance the rate of
GTP hydrolysis by several orders of magnitude.
Length = 187
Score = 40.1 bits (94), Expect = 0.001
Identities = 31/101 (30%), Positives = 47/101 (46%), Gaps = 10/101 (9%)
Query: 49 PGNASQVAELFHAYSGEIKSYNFSKLE-PALLAIMLKTYLKSLTEPLIPYVYYEKFVSLL 107
PG+ +V EL Y S LE P + A +LK +L+ L EPLIP Y++ +
Sbjct: 47 PGDIDEVNELKLRVDQ--WDYPLSGLEDPHVPASLLKLWLRELEEPLIPDALYQQ---CI 101
Query: 108 SGSNDRHIGSRLFALVQDFPAHHFSALRYLMAHLARMCALQ 148
S S D + +VQ P + L YL+ + ++ A
Sbjct: 102 SASEDP---DKAVEIVQKLPIINRLVLCYLI-NFLQVFAQP 138
>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 = 37.2 bits (86), Expect = 0.001
Identities = 24/73 (32%), Positives = 37/73 (50%), Gaps = 4/73 (5%)
Query: 425 MSRAQAEALLSGRPD--GTFLIRPSTT--GQYALSIVCSGAPKHCLVYETERGFGFAEPF 480
+SR QA+ LL P+ G FLIRPS + G Y+LS+ H + G + +
Sbjct: 7 ISRTQAQQLLLSPPNEPGAFLIRPSESSLGGYSLSVRAQAKVCHYRICMAPSGSLYLQKG 66
Query: 481 NIYPSLGALVLHY 493
++P L L+ +Y
Sbjct: 67 RLFPGLEELLAYY 79
Score = 33.0 bits (75), Expect = 0.046
Identities = 14/42 (33%), Positives = 22/42 (52%), Gaps = 2/42 (4%)
Query: 217 WYWGDISRDDVNDKLADTAD--GTFLVRDTSTKNGEYTLTLR 256
WY+ ISR L + G FL+R + + G Y+L++R
Sbjct: 2 WYFSGISRTQAQQLLLSPPNEPGAFLIRPSESSLGGYSLSVR 43
>gnl|CDD|198278 cd10415, SH2_Grb10, Src homology 2 (SH2) domain found in the growth
factor receptor bound, subclass 10 (Grb10) proteins.
The Grb family binds to the epidermal growth factor
receptor (EGFR, erbB1) via their SH2 domains. Grb10 is
part of the Grb7 family of proteins which also includes
Grb7, 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. 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. 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 = 37.3 bits (86), Expect = 0.003
Identities = 24/87 (27%), Positives = 44/87 (50%), Gaps = 7/87 (8%)
Query: 213 RDAEWYWGDISRDDVNDKLADTA--DGTFLVRDTSTKNGEYTLTLRKGGTNKLIKI--FH 268
R W+ G ISR++ + + DG FL+RD+ + + LTL K +I
Sbjct: 3 RTQHWFHGRISREESHRIIKQQGLVDGLFLLRDSQSNPKAFVLTLCHHQKIKNFQILPCE 62
Query: 269 RNGRYGFS---EPFKFTSVVELINYYK 292
+G+ FS KF+ +++L+++Y+
Sbjct: 63 DDGQTFFSLDDGNTKFSDLIQLVDFYQ 89
>gnl|CDD|198208 cd10345, SH2_C-SH2_Zap70_Syk_like, C-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 C-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 = 95
Score = 36.6 bits (84), Expect = 0.004
Identities = 22/84 (26%), Positives = 37/84 (44%), Gaps = 14/84 (16%)
Query: 217 WYWGDISRDDVNDKLADTA--DGTFLVRDTSTKNGEYTLTLRKGGTNKLIKIFH------ 268
W+ G ISR++ + + +G FL+R NG Y L L G + H
Sbjct: 2 WFHGKISREESEQIVLIGSKTNGKFLIR-ARDNNGSYALCLLHEGK-----VLHYRIDKD 55
Query: 269 RNGRYGFSEPFKFTSVVELINYYK 292
+ G+ E KF ++ +L+ +Y
Sbjct: 56 KTGKLSIPEGKKFDTLWQLVEHYS 79
>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 = 36.2 bits (83), Expect = 0.006
Identities = 31/92 (33%), Positives = 44/92 (47%), Gaps = 4/92 (4%)
Query: 425 MSRAQAEALLSGRPDGTFLIRPSTTGQY--ALSIVCSGAPKHCLVYET-ERGFGFAEPFN 481
+SRA AE LLS +G++L+R S T +LS+ S H T E +
Sbjct: 8 LSRADAENLLSLCKEGSYLVRLSETRPQDCSLSLRSSQGFLHLKFARTRENQVVLGQHSG 67
Query: 482 IYPSLGALVLHYAANSLEEHNDDLKTTLAYPV 513
+PS+ LVLHY++ L + L YPV
Sbjct: 68 PFPSVPELVLHYSSRPLPVQGAE-HLALLYPV 98
Score = 31.2 bits (70), Expect = 0.30
Identities = 31/100 (31%), Positives = 47/100 (47%), Gaps = 9/100 (9%)
Query: 217 WYWGDISRDDVNDKLADTADGTFLVRDTSTKNGEYTLTLRKGGTNKLIKIFHRNGRYGF- 275
W+ G +SR D + L+ +G++LVR + T+ + +L+LR +K F R
Sbjct: 3 WFHGPLSRADAENLLSLCKEGSYLVRLSETRPQDCSLSLRSSQGFLHLK-FARTRENQVV 61
Query: 276 ----SEPFKFTSVVELINYYKHESLSQYNSTLDTRLLYPV 311
S PF SV EL+ +Y L + LLYPV
Sbjct: 62 LGQHSGPFP--SVPELVLHYSSRPLPVQGAE-HLALLYPV 98
>gnl|CDD|198275 cd10412, SH2_SH2B3, Src homology 2 (SH2) domain found in SH2B
adapter proteins (SH2B1, SH2B2, SH2B3). SH2B3 (Lnk),
like other members of the SH2B adapter protein family,
contains a pleckstrin homology domain, at least one
dimerization domain, and a C-terminal SH2 domain which
binds to phosphorylated tyrosines in a variety of
tyrosine kinases. SH2B3 negatively regulates
lymphopoiesis and early hematopoiesis. The
lnk-deficiency results in enhanced production of B
cells, and expansion as well as enhanced function of
hematopoietic stem cells (HSCs), demonstrating negative
regulatory functions of Sh2b3/Lnk in cytokine signaling.
Sh2b3/Lnk also functions in responses controlled by cell
adhesion and in crosstalk between integrin- and
cytokine-mediated 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 = 97
Score = 36.0 bits (83), Expect = 0.006
Identities = 23/79 (29%), Positives = 38/79 (48%), Gaps = 3/79 (3%)
Query: 217 WYWGDISRDDVNDKL---ADTADGTFLVRDTSTKNGEYTLTLRKGGTNKLIKIFHRNGRY 273
W+ G ISR + A G FLVR + T+ GEY LT G K +++
Sbjct: 10 WFHGPISRVKAAQLVQLQGPDAHGVFLVRQSETRRGEYVLTFNFQGRAKHLRLSLTERGQ 69
Query: 274 GFSEPFKFTSVVELINYYK 292
+ F SVV+++++++
Sbjct: 70 CRVQHLHFPSVVDMLHHFQ 88
Score = 30.6 bits (69), Expect = 0.54
Identities = 22/54 (40%), Positives = 30/54 (55%), Gaps = 5/54 (9%)
Query: 425 MSRAQAEALLSGR-PD--GTFLIRPSTT--GQYALSIVCSGAPKHCLVYETERG 473
+SR +A L+ + PD G FL+R S T G+Y L+ G KH + TERG
Sbjct: 15 ISRVKAAQLVQLQGPDAHGVFLVRQSETRRGEYVLTFNFQGRAKHLRLSLTERG 68
>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 = 35.8 bits (82), Expect = 0.008
Identities = 16/32 (50%), Positives = 21/32 (65%)
Query: 425 MSRAQAEALLSGRPDGTFLIRPSTTGQYALSI 456
M + AEALL G+P+GTFL+R S Y S+
Sbjct: 17 MDKYAAEALLEGKPEGTFLLRDSAQEDYLFSV 48
Score = 32.0 bits (72), Expect = 0.20
Identities = 22/97 (22%), Positives = 46/97 (47%), Gaps = 4/97 (4%)
Query: 207 PETNSLRDAEWYWGDISRDDVNDKLADTADGTFLVRDTSTKNGEYTLTLRKGGTNKLIKI 266
P+ + + YWG + + L +GTFL+RD++ ++ ++++ R+ + +I
Sbjct: 2 PDLLQINNNPCYWGVMDKYAAEALLEGKPEGTFLLRDSAQEDYLFSVSFRRYSRSLHARI 61
Query: 267 FHRNGRYGFS--EPFKFTS--VVELINYYKHESLSQY 299
N + F +P F S + L+ +YK S +
Sbjct: 62 EQWNHNFSFDAHDPCVFHSPDITGLLEHYKDPSACMF 98
>gnl|CDD|239850 cd04385, RhoGAP_ARAP, RhoGAP_ARAP: RhoGAP (GTPase-activator protein
[GAP] for Rho-like small GTPases) domain present in
ARAPs. ARAPs (also known as centaurin deltas) contain,
besides the RhoGAP domain, an Arf GAP, ankyrin repeat
ras-associating, and PH domains. Since their ArfGAP
activity is PIP3-dependent, ARAPs are considered
integration points for phosphoinositide, Arf and Rho
signaling. Small GTPases cluster into distinct families,
and all act as molecular switches, active in their
GTP-bound form but inactive when GDP-bound. The Rho
family of GTPases activates effectors involved in a wide
variety of developmental processes, including regulation
of cytoskeleton formation, cell proliferation and the
JNK signaling pathway. GTPases generally have a low
intrinsic GTPase hydrolytic activity but there are
family-specific groups of GAPs that enhance the rate of
GTP hydrolysis by several orders of magnitude.
Length = 184
Score = 37.3 bits (87), Expect = 0.008
Identities = 22/97 (22%), Positives = 44/97 (45%), Gaps = 2/97 (2%)
Query: 49 PGNASQVAELFHAYSGEIKSYNF--SKLEPALLAIMLKTYLKSLTEPLIPYVYYEKFVSL 106
G S V +L A+ + +S + +A +LK +L+ L +PL+ + +++
Sbjct: 40 NGKNSSVKKLLEAFRKDARSVQLREGEYTVHDVADVLKRFLRDLPDPLLTSELHAEWIEA 99
Query: 107 LSGSNDRHIGSRLFALVQDFPAHHFSALRYLMAHLAR 143
N +R L++ P + + L+ L+ HL R
Sbjct: 100 AELENKDERIARYKELIRRLPPINRATLKVLIGHLYR 136
>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 = 35.6 bits (82), Expect = 0.009
Identities = 26/83 (31%), Positives = 39/83 (46%), Gaps = 2/83 (2%)
Query: 425 MSRAQAEALLSGRPDGTFLIRPSTTG-QYALSIVCSGAPKHCLVYETERG-FGFAEPFNI 482
+SR AE +L +P G+FLIR S + Y LS + +H +V + G F
Sbjct: 14 ISREAAENMLESQPLGSFLIRVSHSHVGYTLSYKAQSSCRHFMVKLLDDGTFMIPGEKVA 73
Query: 483 YPSLGALVLHYAANSLEEHNDDL 505
+ SL ALV + +E + L
Sbjct: 74 HTSLHALVTFHQQKPIEPRRELL 96
Score = 34.1 bits (78), Expect = 0.029
Identities = 21/90 (23%), Positives = 42/90 (46%), Gaps = 3/90 (3%)
Query: 216 EWYWGDISRDDVNDKLADTADGTFLVRDTSTKNGEYTLTLRKGGTNK--LIKIFHRNGRY 273
EW+ G ISR+ + L G+FL+R + + G YTL+ + + + ++K+
Sbjct: 8 EWFHGAISREAAENMLESQPLGSFLIRVSHSHVG-YTLSYKAQSSCRHFMVKLLDDGTFM 66
Query: 274 GFSEPFKFTSVVELINYYKHESLSQYNSTL 303
E TS+ L+ +++ + + L
Sbjct: 67 IPGEKVAHTSLHALVTFHQQKPIEPRRELL 96
>gnl|CDD|198209 cd10346, SH2_SH2B_family, Src homology 2 (SH2) domain found in SH2B
adapter protein family. The SH2B adapter protein family
has 3 members: SH2B1 (SH2-B, PSM), SH2B2 (APS), and
SH2B3 (Lnk). SH2B family members contain a pleckstrin
homology domain, at least one dimerization domain, and a
C-terminal SH2 domain which binds to phosphorylated
tyrosines in a variety of tyrosine kinases. SH2B1 and
SH2B2 function in signaling pathways found downstream
of growth hormone receptor and receptor tyrosine
kinases, including the insulin, insulin-like growth
factor-I (IGF-I), platelet-derived growth factor (PDGF),
nerve growth factor, hepatocyte growth factor, and
fibroblast growth factor receptors. SH2B2beta, a new
isoform of SH2B2, is an endogenous inhibitor of SH2B1
and/or SH2B2 (SH2B2alpha), negatively regulating insulin
signaling and/or JAK2-mediated cellular responses. SH2B3
negatively regulates lymphopoiesis and early
hematopoiesis. The lnk-deficiency results in enhanced
production of B cells, and expansion as well as enhanced
function of hematopoietic stem cells (HSCs),
demonstrating negative regulatory functions of Sh2b3/Lnk
in cytokine signaling. Sh2b3/Lnk also functions in
responses controlled by cell adhesion and in crosstalk
between integrin- and cytokine-mediated 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 = 97
Score = 34.7 bits (80), Expect = 0.016
Identities = 22/61 (36%), Positives = 31/61 (50%), Gaps = 3/61 (4%)
Query: 209 TNSLRDAEWYWGDISR-DDVNDKLADTAD--GTFLVRDTSTKNGEYTLTLRKGGTNKLIK 265
T L + W+ G +SR D L AD G FLVR + T+ GE+ LT G K ++
Sbjct: 2 TAELSEYPWFHGTLSRSDAAQLVLHSGADGHGVFLVRQSETRRGEFVLTFNFQGRAKHLR 61
Query: 266 I 266
+
Sbjct: 62 L 62
Score = 31.2 bits (71), Expect = 0.27
Identities = 19/55 (34%), Positives = 27/55 (49%), Gaps = 5/55 (9%)
Query: 424 RMSRAQAEAL-LSGRPD--GTFLIRPSTT--GQYALSIVCSGAPKHCLVYETERG 473
+SR+ A L L D G FL+R S T G++ L+ G KH + E+G
Sbjct: 14 TLSRSDAAQLVLHSGADGHGVFLVRQSETRRGEFVLTFNFQGRAKHLRLTLNEKG 68
>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 = 34.4 bits (79), Expect = 0.023
Identities = 27/98 (27%), Positives = 47/98 (47%), Gaps = 19/98 (19%)
Query: 205 SGPETNSLRDAEWYWGDISRDDVNDKL-ADTADGTFLVRDTSTKNGEYTLT-LRKGGTNK 262
+ P TN +WY G + R ++L G++L+R++ + G + L+ L + G N
Sbjct: 14 TAPPTN-----QWYHGRLDRTIAEERLRQAGKLGSYLIRESDRRPGSFVLSFLSRTGVNH 68
Query: 263 LIKI-----FHRNGRYGFSEPFKFTSVVELINYYKHES 295
I ++ GR +F+S+ +LI YY H S
Sbjct: 69 FRIIAMCGDYYIGGR-------RFSSLSDLIGYYSHVS 99
>gnl|CDD|198174 cd09918, SH2_Nterm_SPT6_like, N-terminal Src homology 2 (SH2)
domain found in Spt6. N-terminal SH2 domain in Spt6.
Spt6 is an essential transcription elongation factor and
histone chaperone that binds the C-terminal repeat
domain (CTD) of RNA polymerase II. Spt6 contains a
tandem SH2 domain with a novel structure and CTD-binding
mode. The tandem SH2 domain binds to a serine
2-phosphorylated CTD peptide in vitro, whereas its
N-terminal SH2 subdomain does not. CTD binding requires
a positively charged crevice in the C-terminal SH2
subdomain, which lacks the canonical phospho-binding
pocket of SH2 domains. The tandem SH2 domain is
apparently required for transcription elongation in vivo
as its deletion in cells is lethal in the presence of
6-azauracil. 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 = 85
Score = 33.8 bits (78), Expect = 0.028
Identities = 17/56 (30%), Positives = 28/56 (50%), Gaps = 3/56 (5%)
Query: 425 MSRAQAEALLSGRPDGTFLIRPSTTGQYALSI---VCSGAPKHCLVYETERGFGFA 477
++ QAEA L + G +IRPS+ G L++ V G +H + E + F+
Sbjct: 8 VNYKQAEAYLKSKDVGEVVIRPSSKGVDHLTVTWKVADGVYQHIDIEELNKENPFS 63
>gnl|CDD|239864 cd04399, RhoGAP_fRGD2, RhoGAP_fRGD2: RhoGAP (GTPase-activator
protein [GAP] for Rho-like small GTPases) domain of
fungal RGD2-like proteins. Yeast Rgd2 is a GAP protein
for Cdc42 and Rho5. Small GTPases cluster into distinct
families, and all act as molecular switches, active in
their GTP-bound form but inactive when GDP-bound. The
Rho family of GTPases activates effectors involved in a
wide variety of developmental processes, including
regulation of cytoskeleton formation, cell proliferation
and the JNK signaling pathway. GTPases generally have a
low intrinsic GTPase hydrolytic activity but there are
family-specific groups of GAPs that enhance the rate of
GTP hydrolysis by several orders of magnitude.
Length = 212
Score = 35.8 bits (83), Expect = 0.034
Identities = 21/81 (25%), Positives = 35/81 (43%), Gaps = 8/81 (9%)
Query: 71 FSKLEPALLAIMLKTYLKSLTEPLIPYVYYE-------KFVSLLSGSNDRHIGSRLFALV 123
K EP+ +A +LK YL L + LIP+ Y+ + S+ I L + +
Sbjct: 73 LKKFEPSTVASVLKLYLLELPDSLIPHDIYDLIRSLYSAYPPSQEDSDTARI-QGLQSTL 131
Query: 124 QDFPAHHFSALRYLMAHLARM 144
P H + L ++ H R+
Sbjct: 132 SQLPKSHIATLDAIITHFYRL 152
>gnl|CDD|198222 cd10359, SH2_SH3BP2, Src homology 2 domain found in c-Abl SH3
domain-binding protein-2 (SH3BP2). The adaptor protein
3BP2/SH3BP2 plays a regulatory role in signaling from
immunoreceptors. The protein-tyrosine kinase Syk
phosphorylates 3BP2 which results in the activation of
Rac1 through the interaction with the SH2 domain of Vav1
and induces the binding to the SH2 domain of the
upstream protein-tyrosine kinase Lyn and enhances its
kinase activity. 3BP2 has a positive regulatory role in
IgE-mediated mast cell activation. In lymphocytes,
engagement of T cell or B cell receptors triggers
tyrosine phosphorylation of 3BP2. Suppression of the
3BP2 expression by siRNA results in the inhibition of T
cell or B cell receptor-mediated activation of NFAT.
3BP2 is required for the proliferation of B cells and B
cell receptor signaling. Mutations in the 3BP2 gene are
responsible for cherubism resulting in excessive bone
resorption in the jaw. 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 = 33.8 bits (77), Expect = 0.036
Identities = 23/85 (27%), Positives = 39/85 (45%), Gaps = 4/85 (4%)
Query: 228 NDKLADTADGTFLVRDTSTKNGEYTLTLRKGGTNKLIK--IFHRNGRYGFSEPFKFTSVV 285
DG + +R++STK G L + GG K+ IF ++ ++ E F+S+
Sbjct: 19 TSPKGGPQDGLYCIRNSSTKGG-KVLVVWDGGAEKVRNYRIFEKDCKFYLHEREVFSSLG 77
Query: 286 ELINYYKHESLSQYNSTLDTRLLYP 310
L+ +Y L + S L R+ Y
Sbjct: 78 SLVEHYATHVLPSHTS-LTLRVPYG 101
Score = 27.3 bits (60), Expect = 8.1
Identities = 28/92 (30%), Positives = 42/92 (45%), Gaps = 10/92 (10%)
Query: 419 KTWLVRMSRAQAEALL------SGRPDGTFLIRPSTT-GQYALSIVCSGAPK--HCLVYE 469
T+ M + E L G DG + IR S+T G L + GA K + ++E
Sbjct: 1 STFKNTMESREVERLFKATSPKGGPQDGLYCIRNSSTKGGKVLVVWDGGAEKVRNYRIFE 60
Query: 470 TERGFGFAEPFNIYPSLGALVLHYAANSLEEH 501
+ F + ++ SLG+LV HYA + L H
Sbjct: 61 KDCKF-YLHEREVFSSLGSLVEHYATHVLPSH 91
>gnl|CDD|198234 cd10371, SH2_Src_Blk, Src homology 2 (SH2) domain found in B
lymphoid kinase (Blk). Blk is a member of the Src
non-receptor type tyrosine kinase family of proteins.
Blk is expressed in the B-cells. Unlike most other Src
members Blk lacks cysteine residues in the SH4 domain
that undergo palmitylation. Blk is required for the
development of IL-17-producing gamma-delta T cells.
Furthermore, Blk is expressed in lymphoid precursors
and, in this capacity, plays a role in regulating thymus
cellularity during ontogeny. Blk 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 = 100
Score = 33.5 bits (76), Expect = 0.045
Identities = 26/83 (31%), Positives = 37/83 (44%), Gaps = 9/83 (10%)
Query: 421 WLVR-MSRAQAEALLSG--RPDGTFLIRPSTTGQYALSIVCSGAP------KHCLVYETE 471
W R +SR AE L G+FLIR S + + A S+ KH + +
Sbjct: 5 WFFRTISRKDAERQLLAPMNKAGSFLIRESESNKGAFSLSVKDVTTQGEVVKHYKIRSLD 64
Query: 472 RGFGFAEPFNIYPSLGALVLHYA 494
G + P +P+L ALV HY+
Sbjct: 65 NGGYYISPRITFPTLQALVQHYS 87
Score = 33.5 bits (76), Expect = 0.046
Identities = 25/102 (24%), Positives = 50/102 (49%), Gaps = 12/102 (11%)
Query: 216 EWYWGDISRDDVNDKLADTAD--GTFLVRDTSTKNGEYTLTLRKGGTN-KLIKIFH---- 268
+W++ ISR D +L + G+FL+R++ + G ++L+++ T +++K +
Sbjct: 4 KWFFRTISRKDAERQLLAPMNKAGSFLIRESESNKGAFSLSVKDVTTQGEVVKHYKIRSL 63
Query: 269 RNGRYGFSEPFKFTSVVELINYYKHESLSQYNSTLDTRLLYP 310
NG Y S F ++ L+ +Y S+ L +L P
Sbjct: 64 DNGGYYISPRITFPTLQALVQHY-----SKKGDGLCQKLTLP 100
>gnl|CDD|198273 cd10410, SH2_SH2B1, Src homology 2 (SH2) domain found in SH2B
adapter proteins (SH2B1, SH2B2, SH2B3). SH2B1 (SH2-B,
PSM), like other members of the SH2B adapter protein
family, contains a pleckstrin homology domain, at least
one dimerization domain, and a C-terminal SH2 domain
which binds to phosphorylated tyrosines in a variety of
tyrosine kinases. SH2B1 and SH2B2 function in
signaling pathways found downstream of growth hormone
receptor and receptor tyrosine kinases, including the
insulin, insulin-like growth factor-I (IGF-I),
platelet-derived growth factor (PDGF), nerve growth
factor, hepatocyte growth factor, and fibroblast growth
factor receptors. SH2B2beta, a new isoform of SH2B2, is
an endogenous inhibitor of SH2B1 and/or SH2B2
(SH2B2alpha), negatively regulating insulin signaling
and/or JAK2-mediated cellular responses. 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 = 33.5 bits (76), Expect = 0.046
Identities = 20/84 (23%), Positives = 38/84 (45%), Gaps = 3/84 (3%)
Query: 212 LRDAEWYWGDISRDDVNDKLAD---TADGTFLVRDTSTKNGEYTLTLRKGGTNKLIKIFH 268
L W+ G +SR + + + G FLVR + T+ GEY LT G K +++
Sbjct: 5 LSGYPWFHGMLSRLKAAQLVLEGGTGSHGVFLVRQSETRRGEYVLTFNFQGKAKHLRLSL 64
Query: 269 RNGRYGFSEPFKFTSVVELINYYK 292
+ F S+ +++ +++
Sbjct: 65 NEEGQCRVQHLWFQSIFDMLEHFR 88
>gnl|CDD|198276 cd10413, SH2_Grb7, 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. Grb7 is part of the
Grb7 family of proteins which also includes 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. 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 = 33.3 bits (76), Expect = 0.067
Identities = 23/87 (26%), Positives = 41/87 (47%), Gaps = 7/87 (8%)
Query: 213 RDAEWYWGDISRDDVNDKLADTA--DGTFLVRDTSTKNGEYTLTL--RKGGTNKLIKIFH 268
R W+ G ISR++ + DG FLVR++ + L+L + + LI
Sbjct: 3 RTQPWFHGRISREESQRLIGQQGLVDGVFLVRESQRNPQGFVLSLCHLQKVKHYLILPSE 62
Query: 269 RNGRYGFSE---PFKFTSVVELINYYK 292
GR FS +FT +++L+ +++
Sbjct: 63 EEGRLYFSMDDGQTRFTDLLQLVEFHQ 89
>gnl|CDD|239872 cd04407, RhoGAP_myosin_IXB, RhoGAP_myosin_IXB: RhoGAP
(GTPase-activator protein [GAP] for Rho-like small
GTPases) domain present in myosins IXB. Class IX myosins
contain a characteristic head domain, a neck domain and
a tail domain which contains a C6H2-zinc binding motif
and a Rho-GAP domain. Class IX myosins are
single-headed, processive myosins that are partly
cytoplasmic, and partly associated with membranes and
the actin cytoskeleton. Class IX myosins are implicated
in the regulation of neuronal morphogenesis and function
of sensory systems, like the inner ear. There are two
major isoforms, myosin IXA and IXB with several splice
variants, which are both expressed in developing neurons
Small GTPases cluster into distinct families, and all
act as molecular switches, active in their GTP-bound
form but inactive when GDP-bound. The Rho family of
GTPases activates effectors involved in a wide variety
of developmental processes, including regulation of
cytoskeleton formation, cell proliferation and the JNK
signaling pathway. GTPases generally have a low
intrinsic GTPase hydrolytic activity but there are
family-specific groups of GAPs that enhance the rate of
GTP hydrolysis by several orders of magnitude.
Length = 186
Score = 34.2 bits (78), Expect = 0.075
Identities = 18/99 (18%), Positives = 45/99 (45%)
Query: 50 GNASQVAELFHAYSGEIKSYNFSKLEPALLAIMLKTYLKSLTEPLIPYVYYEKFVSLLSG 109
G+A+++ EL + ++ + +LK +L+ L EPL+ + Y F+ +
Sbjct: 41 GSANRMKELHQLLQADPENVKLENYPIHAITGLLKQWLRELPEPLMTFAQYNDFLRAVEL 100
Query: 110 SNDRHIGSRLFALVQDFPAHHFSALRYLMAHLARMCALQ 148
+ ++ +++ P + + L L+ HL ++ +
Sbjct: 101 PEKQEQLQAIYRVLEQLPTANHNTLERLIFHLVKVALEE 139
>gnl|CDD|239861 cd04396, RhoGAP_fSAC7_BAG7, RhoGAP_fSAC7_BAG7: RhoGAP
(GTPase-activator protein [GAP] for Rho-like small
GTPases) domain of fungal SAC7 and BAG7-like proteins.
Both proteins are GTPase activating proteins of Rho1,
but differ functionally in vivo: SAC7, but not BAG7, is
involved in the control of Rho1-mediated activation of
the PKC-MPK1 pathway. Small GTPases cluster into
distinct families, and all act as molecular switches,
active in their GTP-bound form but inactive when
GDP-bound. The Rho family of GTPases activates effectors
involved in a wide variety of developmental processes,
including regulation of cytoskeleton formation, cell
proliferation and the JNK signaling pathway. GTPases
generally have a low intrinsic GTPase hydrolytic
activity but there are family-specific groups of GAPs
that enhance the rate of GTP hydrolysis by several
orders of magnitude.
Length = 225
Score = 34.7 bits (80), Expect = 0.083
Identities = 20/68 (29%), Positives = 34/68 (50%), Gaps = 7/68 (10%)
Query: 50 GNASQVAELFHAYS-----GEIKSYNFSKLEPALLAIMLKTYLKSLTEPLIPYVYYEKFV 104
G++ ++ EL +S G KS+++ A +L+ YL +L EPL+P YE+F
Sbjct: 58 GSSKRIRELQLIFSTPPDYG--KSFDWDGYTVHDAASVLRRYLNNLPEPLVPLDLYEEFR 115
Query: 105 SLLSGSND 112
+ L
Sbjct: 116 NPLRKRPR 123
>gnl|CDD|198277 cd10414, SH2_Grb14, Src homology 2 (SH2) domain found in the growth
factor receptor bound, subclass 14 (Grb14) proteins.
The Grb family binds to the epidermal growth factor
receptor (EGFR, erbB1) via their SH2 domains. Grb14 is
part of the Grb7 family of proteins which also includes
Grb7, 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. Grb14 binds to
Fibroblast Growth Factor Receptor (FGFR) and weakly to
the erbB2 receptor. 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 = 33.0 bits (75), Expect = 0.098
Identities = 22/87 (25%), Positives = 40/87 (45%), Gaps = 7/87 (8%)
Query: 213 RDAEWYWGDISRDDVNDKLADTA--DGTFLVRDTSTKNGEYTLTLRKGGTNKLIKI--FH 268
R W+ ISRD+ + DG FLVRD+ + + L++ G K +I
Sbjct: 3 RSQPWFHHKISRDEAQRLIIQQGLVDGVFLVRDSQSNPRTFVLSMSHGQKIKHFQIIPVE 62
Query: 269 RNGRYGFS---EPFKFTSVVELINYYK 292
+G + +FT +++L+ +Y+
Sbjct: 63 DDGELFHTLDDGHTRFTDLIQLVEFYQ 89
>gnl|CDD|239852 cd04387, RhoGAP_Bcr, RhoGAP_Bcr: RhoGAP (GTPase-activator protein
[GAP] for Rho-like small GTPases) domain of Bcr
(breakpoint cluster region protein)-like proteins. Bcr
is a multidomain protein with a variety of enzymatic
functions. It contains a RhoGAP and a Rho GEF domain, a
Ser/Thr kinase domain, an N-terminal oligomerization
domain, and a C-terminal PDZ binding domain, in addition
to PH and C2 domains. Bcr is a negative regulator of:
i) RacGTPase, via the Rho GAP domain, ii) the
Ras-Raf-MEK-ERK pathway, via phosphorylation of the Ras
binding protein AF-6, and iii) the Wnt signaling pathway
through binding beta-catenin. Bcr can form a complex
with beta-catenin and Tcf1. The Wnt signaling pathway
is involved in cell proliferation, differentiation, and
cell renewal. Bcr was discovered as a fusion partner of
Abl. The Bcr-Abl fusion is characteristic for a large
majority of chronic myelogenous leukemias (CML). Small
GTPases cluster into distinct families, and all act as
molecular switches, active in their GTP-bound form but
inactive when GDP-bound. The Rho family of GTPases
activates effectors involved in a wide variety of
developmental processes, including regulation of
cytoskeleton formation, cell proliferation and the JNK
signaling pathway. GTPases generally have a low
intrinsic GTPase hydrolytic activity but there are
family-specific groups of GAPs that enhance the rate of
GTP hydrolysis by several orders of magnitude.
Length = 196
Score = 33.4 bits (76), Expect = 0.15
Identities = 25/97 (25%), Positives = 42/97 (43%), Gaps = 2/97 (2%)
Query: 50 GNASQVAELFHAYSGEIK--SYNFSKLEPALLAIMLKTYLKSLTEPLIPYVYYEKFVSLL 107
G A+ + L A+ K S S+++ +A LK Y + L EPL Y F +
Sbjct: 42 GVATDIQALKAAFDTNNKDVSVMLSEMDVNAIAGTLKLYFRELPEPLFTDELYPNFAEGI 101
Query: 108 SGSNDRHIGSRLFALVQDFPAHHFSALRYLMAHLARM 144
+ S+ S + L+ P + +L+ HL R+
Sbjct: 102 ALSDPVAKESCMLNLLLSLPDPNLVTFLFLLHHLKRV 138
>gnl|CDD|239856 cd04391, RhoGAP_ARHGAP18, RhoGAP_ARHGAP18: RhoGAP (GTPase-activator
protein [GAP] for Rho-like small GTPases) domain of
ArhGAP18-like proteins. The function of ArhGAP18 is
unknown. Small GTPases cluster into distinct families,
and all act as molecular switches, active in their
GTP-bound form but inactive when GDP-bound. The Rho
family of GTPases activates effectors involved in a wide
variety of developmental processes, including regulation
of cytoskeleton formation, cell proliferation and the
JNK signaling pathway. GTPases generally have a low
intrinsic GTPase hydrolytic activity but there are
family-specific groups of GAPs that enhance the rate of
GTP hydrolysis by several orders of magnitude.
Length = 216
Score = 33.5 bits (77), Expect = 0.20
Identities = 23/105 (21%), Positives = 45/105 (42%), Gaps = 8/105 (7%)
Query: 49 PGNASQVAELF-----HAYSGEIKSYNFSKLEPALLAIMLKTYLKSLTEPLIPYVYYEKF 103
PG+A +V L Y G + + +++ A +LK +++ L +PL+ Y F
Sbjct: 47 PGSAQRVKFLCQELEAKFYEGT---FLWDQVKQHDAASLLKLFIRELPQPLLTVEYLPAF 103
Query: 104 VSLLSGSNDRHIGSRLFALVQDFPAHHFSALRYLMAHLARMCALQ 148
S+ + + L LV P + L+ L+ L ++ +
Sbjct: 104 YSVQGLPSKKDQLQALNLLVLLLPEANRDTLKALLEFLQKVVDHE 148
>gnl|CDD|198213 cd10350, SH2_SH2D4A, Src homology 2 domain found in the SH2 domain
containing protein 4A (SH2D4A). SH2D4A 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 = 31.4 bits (71), Expect = 0.28
Identities = 26/88 (29%), Positives = 41/88 (46%), Gaps = 12/88 (13%)
Query: 425 MSRAQAEALLSGRPDGTFLIRPSTTGQ-YALSIVCSGAPKHCLVYETERGFGFAEPFNIY 483
++ +A LL G+FLIR S + YALS + KH L+ + + F
Sbjct: 14 LTLKKANELLLSTMPGSFLIRVSEKIKGYALSYLSEEGCKHFLIDASADSYSF------- 66
Query: 484 PSLGALVLHYA--ANSLEEHNDDLKTTL 509
LG L +A A+ +E H ++ T+L
Sbjct: 67 --LGVDQLQHATLADLVEYHKEEPITSL 92
Score = 31.1 bits (70), Expect = 0.35
Identities = 27/98 (27%), Positives = 43/98 (43%), Gaps = 6/98 (6%)
Query: 215 AEWYWGDISRDDVNDKLADTADGTFLVRDTSTKNGEYTLTLRKGGTNKLIKIFHRNGRYG 274
A W+ G ++ N+ L T G+FL+R S K Y L+ K I Y
Sbjct: 7 APWFHGILTLKKANELLLSTMPGSFLIR-VSEKIKGYALSYLSEEGCKHFLIDASADSYS 65
Query: 275 F--SEPFKFTSVVELINYYKHESLSQYNSTLDTRLLYP 310
F + + ++ +L+ Y+K E ++ L LLYP
Sbjct: 66 FLGVDQLQHATLADLVEYHKEEPITSLGKEL---LLYP 100
>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 = 31.8 bits (73), Expect = 0.28
Identities = 14/37 (37%), Positives = 21/37 (56%), Gaps = 2/37 (5%)
Query: 424 RMSRAQAEALLSGRPDGTFLIR--PSTTGQYALSIVC 458
+S+ +AE LL +P GTFL+R S G ++ V
Sbjct: 25 FISKEEAEDLLKKKPPGTFLLRFSDSELGGITIAWVN 61
Score = 29.5 bits (67), Expect = 1.6
Identities = 10/26 (38%), Positives = 14/26 (53%)
Query: 217 WYWGDISRDDVNDKLADTADGTFLVR 242
G IS+++ D L GTFL+R
Sbjct: 21 LIMGFISKEEAEDLLKKKPPGTFLLR 46
>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 = 30.6 bits (69), Expect = 0.31
Identities = 17/77 (22%), Positives = 33/77 (42%), Gaps = 3/77 (3%)
Query: 217 WYWGDISRDDVNDKLADTADGTFLVRDTSTKNGEYTLTLRKGGTNKLIKIFH-RNGRYGF 275
W+ G I+R + L G +LVR + + + L+ R + + R+GR+
Sbjct: 2 WFHGFITRREAERLLEPKPQGCYLVRFSESAVT-FVLSYRSRTCCRHFLLAQLRDGRHVV 60
Query: 276 S-EPFKFTSVVELINYY 291
E + +L+ +Y
Sbjct: 61 LGEDSAHARLQDLLLHY 77
Score = 29.4 bits (66), Expect = 0.98
Identities = 20/71 (28%), Positives = 34/71 (47%), Gaps = 2/71 (2%)
Query: 425 MSRAQAEALLSGRPDGTFLIRPSTTG-QYALSIVCSGAPKHCLVYETERG-FGFAEPFNI 482
++R +AE LL +P G +L+R S + + LS +H L+ + G +
Sbjct: 7 ITRREAERLLEPKPQGCYLVRFSESAVTFVLSYRSRTCCRHFLLAQLRDGRHVVLGEDSA 66
Query: 483 YPSLGALVLHY 493
+ L L+LHY
Sbjct: 67 HARLQDLLLHY 77
>gnl|CDD|185765 cd09242, BRO1_ScBro1_like, Protein-interacting, N-terminal,
Bro1-like domain of Saccharomyces cerevisiae Bro1 and
related proteins. This family contains the N-terminal,
Bro1-like domain of Saccharomyces cerevisiae Bro1 and
related proteins. It belongs to the BRO1_Alix_like
superfamily which also includes the Bro1-like domains of
mammalian Alix (apoptosis-linked gene-2 interacting
protein X), His-Domain type N23 protein tyrosine
phosphatase (HD-PTP, also known as PTPN23), RhoA-binding
proteins Rhophilin-1 and -2, Brox, Saccharomyces
cerevisiae Rim20 (also known as PalA), Ustilago maydis
Rim23 (also known as PalC), and related domains. Alix,
HD-PTP, Brox, Bro1, Rim20, and Rim23, interact with the
ESCRT (Endosomal Sorting Complexes Required for
Transport) system. Bro1 participates in endosomal
trafficking. Bro1-like domains are boomerang-shaped, and
part of the domain is a tetratricopeptide repeat
(TPR)-like structure. Bro1-like domains bind components
of the ESCRT-III complex: Snf7 in the case of Bro1. Snf7
binds to a conserved hydrophobic patch on the middle of
the concave side of the Bro1 domain. RIM20, and some
other members of the BRO1_Alix_like superfamily
including Alix, also have a V-shaped (V) domain. In the
case of Alix, the V-domain contains a binding site for
the retroviral late assembly (L) domain YPXnL motif,
which is partially conserved in the superfamily. The
Alix V-domain is also a dimerization domain. The
C-terminal portion (V-domain and proline rich-region) of
Bro1 interacts with Doa4, a protease that
deubiquitinates integral membrane proteins sorted into
the lumenal vesicles of late-endosomal multivesicular
bodies. It interacts with a YPxL motif in the Doa4
catalytic domain to stimulate its deubiquitination
activity.
Length = 348
Score = 32.6 bits (75), Expect = 0.50
Identities = 16/41 (39%), Positives = 18/41 (43%), Gaps = 6/41 (14%)
Query: 480 FNIYPSLGALVLHYAANSLEEHNDDLKTTLAYPVFAPASGM 520
FNI GAL+ AA E DDLK A A+G
Sbjct: 111 FNI----GALLSQLAAEKYREDEDDLKE--AITNLQQAAGC 145
>gnl|CDD|227517 COG5190, FCP1, TFIIF-interacting CTD phosphatases, including
NLI-interacting factor [Transcription].
Length = 390
Score = 32.4 bits (74), Expect = 0.59
Identities = 27/139 (19%), Positives = 44/139 (31%), Gaps = 17/139 (12%)
Query: 168 LPTFSSPPALPPRKLSPRPSATYVHSRQSSLDVAKMSSGPETNSLRDAEWYWGDISRDDV 227
L S P + L T VHS + + E SL Y +S+
Sbjct: 201 LEPPVSKSTSPKKTLVLDLDETLVHSSFRYITLLDFLVKVE-ISLLQHLVY---VSKRPE 256
Query: 228 NDKLADTADGTF-LVRDTSTKNGEYTLTLRKGGTNKLIKIFHRNGRYGFSEPFKFTSVVE 286
D LV T++ K + ++ I + + F+ + V
Sbjct: 257 LDYFLGKLSKIHELVYFTASV---------KRYADPVLDILDSD-KVFSHRLFRESCVSY 306
Query: 287 LINYYKHESLSQYNSTLDT 305
L Y K +S+ +LD
Sbjct: 307 LGVYIK--DISKIGRSLDK 323
>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 = 30.6 bits (69), Expect = 0.59
Identities = 14/37 (37%), Positives = 20/37 (54%), Gaps = 1/37 (2%)
Query: 218 YWGDISRDDVNDKLADT-ADGTFLVRDTSTKNGEYTL 253
Y G ISR+ L DG++L+RD+ + G Y L
Sbjct: 6 YHGKISRETGEKLLLAAGLDGSYLLRDSESVPGVYCL 42
>gnl|CDD|198274 cd10411, SH2_SH2B2, Src homology 2 (SH2) domain found in SH2B
adapter proteins (SH2B1, SH2B2, SH2B3). SH2B2 (APS),
like other members of the SH2B adapter protein family,
contains a pleckstrin homology domain, at least one
dimerization domain, and a C-terminal SH2 domain which
binds to phosphorylated tyrosines in a variety of
tyrosine kinases. SH2B1 and SH2B2 function in signaling
pathways found downstream of growth hormone receptor and
receptor tyrosine kinases, including the insulin,
insulin-like growth factor-I (IGF-I), platelet-derived
growth factor (PDGF), nerve growth factor, hepatocyte
growth factor, and fibroblast growth factor receptors.
SH2B2beta, a new isoform of SH2B2, is an endogenous
inhibitor of SH2B1 and/or SH2B2 (SH2B2alpha), negatively
regulating insulin signaling and/or JAK2-mediated
cellular responses. 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 = 30.0 bits (67), Expect = 0.77
Identities = 17/59 (28%), Positives = 28/59 (47%), Gaps = 3/59 (5%)
Query: 211 SLRDAEWYWGDISRDDVNDKL---ADTADGTFLVRDTSTKNGEYTLTLRKGGTNKLIKI 266
L D W+ G +SR + + G F++R + T+ GEY LT G K +++
Sbjct: 4 ELSDYPWFHGTLSRVKAAQLVLAGGPRSHGLFVIRQSETRPGEYVLTFNFQGKAKHLRL 62
>gnl|CDD|239865 cd04400, RhoGAP_fBEM3, RhoGAP_fBEM3: RhoGAP (GTPase-activator [GAP]
protein for Rho-like small GTPases) domain of fungal
BEM3-like proteins. Bem3 is a GAP protein of Cdc42, and
is specifically involved in the control of the initial
assembly of the septin ring in yeast bud formation.
Small GTPases cluster into distinct families, and all
act as molecular switches, active in their GTP-bound
form but inactive when GDP-bound. The Rho family of
GTPases activates effectors involved in a wide variety
of developmental processes, including regulation of
cytoskeleton formation, cell proliferation and the JNK
signaling pathway. GTPases generally have a low
intrinsic GTPase hydrolytic activity but there are
family-specific groups of GAPs that enhance the rate of
GTP hydrolysis by several orders of magnitude.
Length = 190
Score = 31.2 bits (71), Expect = 0.82
Identities = 16/64 (25%), Positives = 29/64 (45%), Gaps = 1/64 (1%)
Query: 82 MLKTYLKSLTEPLIPYVYYEKFVSLLSGSNDR-HIGSRLFALVQDFPAHHFSALRYLMAH 140
+LK YL+ L ++ + F L+ ++DR L LV P ++ L L +
Sbjct: 84 LLKLYLRELPTLILGGELHNDFKRLVEENHDRSQRALELKDLVSQLPQANYDLLYVLFSF 143
Query: 141 LARM 144
L ++
Sbjct: 144 LRKI 147
>gnl|CDD|198256 cd10393, SH2_RIN1, Src homology 2 (SH2) domain found in Ras and Rab
interactor 1 (RIN1)-like proteins. RIN1, a member of
the RIN (AKA Ras interaction/interference) family, have
multifunctional domains including SH2 and proline-rich
(PR) domains in the N-terminal region, and RIN-family
homology (RH), VPS9 and Ras-association (RA) domains in
the C-terminal region. RIN proteins function as
Rab5-GEFs. Previous studies showed that RIN1 interacts
with EGF receptors via its SH2 domain and regulates
trafficking and degradation of EGF receptors via its
interaction with STAM, indicating a vital role for RIN1
in regulating endosomal trafficking of receptor tyrosine
kinases (RTKs). RIN1 was first identified as a
Ras-binding protein that suppresses the activated RAS2
allele in S. cerevisiae. RIN1 binds to the activated Ras
through its carboxyl-terminal domain and this
Ras-binding domain also binds to 14-3-3 proteins as
Raf-1 does. The SH2 domain of RIN1 are thought to
interact with the phosphotyrosine-containing proteins,
but the physiological partners for this domain are
unknown. The proline-rich domain in RIN1 is similar to
the consensus SH3 binding 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 = 101
Score = 29.8 bits (67), Expect = 0.84
Identities = 25/81 (30%), Positives = 34/81 (41%), Gaps = 9/81 (11%)
Query: 421 WL-VRMSRAQAEALLSGRPDGTFLIRPSTTGQ-YALSIVCSGAP------KHCLVYETER 472
WL +R + A A +L P GTFL+R S T Q AL + A H + E+
Sbjct: 12 WLQLRANAAAALHVLRTEPPGTFLVRKSNTRQCQALCVRLPEASGPSFVSSHY-IQESPG 70
Query: 473 GFGFAEPFNIYPSLGALVLHY 493
G +P L L+ Y
Sbjct: 71 GVSLEGSELTFPDLVQLICAY 91
>gnl|CDD|239867 cd04402, RhoGAP_ARHGAP20, RhoGAP_ARHGAP20: RhoGAP (GTPase-activator
protein [GAP] for Rho-like small GTPases) domain of
ArhGAP20-like proteins. ArhGAP20, also known as KIAA1391
and RA-RhoGAP, contains a RhoGAP, a RA, and a PH domain,
and ANXL repeats. ArhGAP20 is activated by Rap1 and
induces inactivation of Rho, which in turn leads to
neurite outgrowth. Small GTPases cluster into distinct
families, and all act as molecular switches, active in
their GTP-bound form but inactive when GDP-bound. The
Rho family of GTPases activates effectors involved in a
wide variety of developmental processes, including
regulation of cytoskeleton formation, cell proliferation
and the JNK signaling pathway. GTPases generally have a
low intrinsic GTPase hydrolytic activity but there are
family-specific groups of GAPs that enhance the rate of
GTP hydrolysis by several orders of magnitude.
Length = 192
Score = 30.7 bits (70), Expect = 1.2
Identities = 18/72 (25%), Positives = 35/72 (48%)
Query: 70 NFSKLEPALLAIMLKTYLKSLTEPLIPYVYYEKFVSLLSGSNDRHIGSRLFALVQDFPAH 129
+ LLA +LK +L+++ L+ YE+++S L N+ + L L+ P
Sbjct: 60 DLKAEPVLLLASVLKDFLRNIPGSLLSSDLYEEWMSALDQENEEEKIAELQRLLDKLPRP 119
Query: 130 HFSALRYLMAHL 141
+ L++L+ L
Sbjct: 120 NVLLLKHLICVL 131
>gnl|CDD|107341 cd06346, PBP1_ABC_ligand_binding_like_11, Type I periplasmic
ligand-binding domain of uncharacterized ABC (Atpase
Binding Cassette)-type active transport systems that are
predicted to be involved in uptake of amino acids,
peptides, or inorganic ions. This subgroup includes the
type I periplasmic ligand-binding domain of
uncharacterized ABC (Atpase Binding Cassette)-type
active transport systems that are predicted to be
involved in uptake of amino acids, peptides, or
inorganic ions. This subgroup has high sequence
similarity to members of the family of hydrophobic amino
acid transporters (HAAT), such as
leucine/isoleucine/valine binding protein (LIVBP);
however its ligand specificity has not been determined
experimentally.
Length = 312
Score = 30.7 bits (70), Expect = 2.0
Identities = 15/51 (29%), Positives = 23/51 (45%), Gaps = 5/51 (9%)
Query: 400 AFTNLSGAVASTVDFESGEKTWLVRMSRAQAEALLSGRPDGTFLIRPSTTG 450
AF L G V + V E G+ ++ ++ A +G PD +I TG
Sbjct: 160 AFEALGGTVTNVVAHEEGKSSY-----SSEVAAAAAGGPDALVVIGYPETG 205
>gnl|CDD|239841 cd04376, RhoGAP_ARHGAP6, RhoGAP_ARHGAP6: RhoGAP (GTPase-activator
protein [GAP] for Rho-like small GTPases) domain of
ArhGAP6-like proteins. ArhGAP6 shows GAP activity
towards RhoA, but not towards Cdc42 and Rac1. ArhGAP6 is
often deleted in microphthalmia with linear skin defects
syndrome (MLS); MLS is a severe X-linked developmental
disorder. Small GTPases cluster into distinct families,
and all act as molecular switches, active in their
GTP-bound form but inactive when GDP-bound. The Rho
family of GTPases activates effectors involved in a wide
variety of developmental processes, including regulation
of cytoskeleton formation, cell proliferation and the
JNK signaling pathway. GTPases generally have a low
intrinsic GTPase hydrolytic activity but there are
family-specific groups of GAPs that enhance the rate of
GTP hydrolysis by several orders of magnitude.
Length = 206
Score = 29.7 bits (67), Expect = 2.4
Identities = 15/63 (23%), Positives = 26/63 (41%), Gaps = 1/63 (1%)
Query: 80 AIMLKTYLKSLTEPLIPYVYYEKFVSLLSGSNDRHIGSRLFALVQDFPAHHFSALRYLMA 139
A +LK + + + +PL+P Y F+ D + L L+ P + L L+
Sbjct: 65 AALLKEFFRDMPDPLLPRELYTAFIGTALLEPDEQL-EALQLLIYLLPPCNCDTLHRLLK 123
Query: 140 HLA 142
L
Sbjct: 124 FLH 126
>gnl|CDD|223023 PHA03249, PHA03249, DNA packaging tegument protein UL25;
Provisional.
Length = 653
Score = 30.4 bits (68), Expect = 2.8
Identities = 25/98 (25%), Positives = 37/98 (37%), Gaps = 17/98 (17%)
Query: 422 LVRMSRAQAEALLSGRPDGTFLIRPSTTGQYALSIV----------CSGAPKHCLVYETE 471
R RA A AL + T GQY + + +P VYET
Sbjct: 307 QTRGGRAAALALHFLMSQ-----KAVTDGQYQACLRRLDEELRKRGTTESPSLTEVYETL 361
Query: 472 RGFGFAEPFNIYPSLGALVLHYAANSLEEHNDDLKTTL 509
R + P Y + GAL L+ +L++ N+ + L
Sbjct: 362 RDYNVLFPIAHYTNRGALYLY--RQNLQKLNNGHRGVL 397
>gnl|CDD|214720 smart00557, IG_FLMN, Filamin-type immunoglobulin domains. These
form a rod-like structure in the actin-binding
cytoskeleton protein, filamin. The C-terminal repeats of
filamin bind beta1-integrin (CD29).
Length = 93
Score = 28.0 bits (63), Expect = 3.4
Identities = 13/30 (43%), Positives = 21/30 (70%)
Query: 230 KLADTADGTFLVRDTSTKNGEYTLTLRKGG 259
++ D DGT+ V T T+ G+YT+T++ GG
Sbjct: 49 EVKDNGDGTYTVSYTPTEPGDYTVTVKFGG 78
>gnl|CDD|239844 cd04379, RhoGAP_SYD1, RhoGAP_SYD1: RhoGAP (GTPase-activator protein
[GAP] for Rho-like small GTPases) domain present in
SYD-1_like proteins. Syd-1, first identified and best
studied in C.elegans, has been shown to play an
important role in neuronal development by specifying
axonal properties. Small GTPases cluster into distinct
families, and all act as molecular switches, active in
their GTP-bound form but inactive when GDP-bound. The
Rho family of GTPases activates effectors involved in a
wide variety of developmental processes, including
regulation of cytoskeleton formation, cell proliferation
and the JNK signaling pathway. GTPases generally have a
low intrinsic GTPase hydrolytic activity but there are
family-specific groups of GAPs that enhance the rate of
GTP hydrolysis by several orders of magnitude.
Length = 207
Score = 29.4 bits (66), Expect = 3.7
Identities = 26/129 (20%), Positives = 44/129 (34%), Gaps = 15/129 (11%)
Query: 82 MLKTYLKSLTEPLIPYVYYEKFVSLLSG-SNDRHIGSRLFALV--QDFPAHHFSALRYLM 138
+LK YL+ L EPLI YE + L+ + + L P + L L+
Sbjct: 79 VLKDYLRELPEPLITPQLYEMVLEALAVALPNDVQTNTHLTLSIIDCLPLSAKATLLLLL 138
Query: 139 AHLARMCALQYARGVREPPTILIQSFTFVLPTFSSPPALPPRKLSPRPSATYVHSRQ--S 196
HL+ + L + + P L F P + + R + S
Sbjct: 139 DHLSLV--LSNSERNKMTPQNLAVCF--------GPVLMFCSQEFSRYGISPTSKMAAVS 188
Query: 197 SLDVAKMSS 205
++D +
Sbjct: 189 TVDFKQHIE 197
>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 = 27.7 bits (61), Expect = 5.0
Identities = 25/89 (28%), Positives = 43/89 (48%), Gaps = 4/89 (4%)
Query: 425 MSRAQAEALLSGRPDGTFLIRPSTTG-QYALSIVCSGAPKHCLVYETERG--FGFAEPFN 481
++R +AE LL +P G +L+R S + + L+ +H L+ + G E +
Sbjct: 14 ITRREAERLLEPKPQGCYLVRFSESAVTFVLTYRSRTCCRHFLLAQLRDGRHVVLGED-S 72
Query: 482 IYPSLGALVLHYAANSLEEHNDDLKTTLA 510
+ L L+LHY A+ L + + L LA
Sbjct: 73 AHARLQDLLLHYTAHPLSPYGETLTEPLA 101
>gnl|CDD|227298 COG4963, CpaE, Flp pilus assembly protein, ATPase CpaE
[Intracellular trafficking and secretion].
Length = 366
Score = 29.3 bits (66), Expect = 5.1
Identities = 14/80 (17%), Positives = 26/80 (32%), Gaps = 2/80 (2%)
Query: 366 TLDTRLLYPVSRFSSDVDADIHSNDVDKYINLKIAFTNLSGAVASTVDFESGEKTWLVRM 425
D L V D A+ ++ + ++K NL+ A D E +
Sbjct: 42 KKDADFLSLVHSIFVDEGAEPLGSETARLADIKNIKENLAAIRAGVNDCVDIESDSISIA 101
Query: 426 SRAQAEALLSGRPD--GTFL 443
+ + A L + + L
Sbjct: 102 QQGRELAFLGAKGGVGTSTL 121
>gnl|CDD|239862 cd04397, RhoGAP_fLRG1, RhoGAP_fLRG1: RhoGAP (GTPase-activator
protein [GAP] for Rho-like small GTPases) domain of
fungal LRG1-like proteins. Yeast Lrg1p is required for
efficient cell fusion, and mother-daughter cell
separation, possibly through acting as a RhoGAP
specifically regulating 1,3-beta-glucan synthesis. Small
GTPases cluster into distinct families, and all act as
molecular switches, active in their GTP-bound form but
inactive when GDP-bound. The Rho family of GTPases
activates effectors involved in a wide variety of
developmental processes, including regulation of
cytoskeleton formation, cell proliferation and the JNK
signaling pathway. GTPases generally have a low
intrinsic GTPase hydrolytic activity but there are
family-specific groups of GAPs that enhance the rate of
GTP hydrolysis by several orders of magnitude.
Length = 213
Score = 28.9 bits (65), Expect = 5.8
Identities = 13/39 (33%), Positives = 23/39 (58%)
Query: 67 KSYNFSKLEPALLAIMLKTYLKSLTEPLIPYVYYEKFVS 105
+ + SK P LA +LK +L+ L +PL+ + Y ++S
Sbjct: 71 EVPDLSKENPVQLAALLKKFLRELPDPLLTFKLYRLWIS 109
>gnl|CDD|111646 pfam02773, S-AdoMet_synt_C, S-adenosylmethionine synthetase,
C-terminal domain. The three domains of
S-adenosylmethionine synthetase have the same alpha+beta
fold.
Length = 138
Score = 28.1 bits (63), Expect = 6.9
Identities = 13/28 (46%), Positives = 19/28 (67%), Gaps = 2/28 (7%)
Query: 139 AHLARMCALQ--YARGVREPPTILIQSF 164
A LAR C +Q YA GV EP +I++ ++
Sbjct: 57 AGLARRCLVQVSYAIGVAEPLSIMVDTY 84
>gnl|CDD|198202 cd10339, SH2_RIN_family, Src homology 2 (SH2) domain found in Ras
and Rab interactor (RIN)-family. The RIN (AKA Ras
interaction/interference) family is composed of RIN1,
RIN2 and RIN3. These proteins have multifunctional
domains including SH2 and proline-rich (PR) domains in
the N-terminal region, and RIN-family homology (RH),
VPS9 and Ras-association (RA) domains in the C-terminal
region. RIN proteins function as Rab5-GEFs, and RIN3
specifically functions as a Rab31-GEF. 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 = 27.1 bits (60), Expect = 8.1
Identities = 14/32 (43%), Positives = 21/32 (65%), Gaps = 1/32 (3%)
Query: 421 WL-VRMSRAQAEALLSGRPDGTFLIRPSTTGQ 451
WL ++++ A+A +L P GTFL+R S T Q
Sbjct: 12 WLQLQLNAAEAAHMLQTEPPGTFLVRKSNTRQ 43
>gnl|CDD|198284 cd10421, SH2_STAT5a, Src homology 2 (SH2) domain found in signal
transducer and activator of transcription (STAT) 5a
proteins. STAT5 is a member of the STAT family of
transcription factors. Two highly related proteins,
STAT5a and STAT5b are encoded by separate genes, but are
90% identical at the amino acid level. Both STAT5a and
STAT5b are ubiquitously expressed and functionally
interchangeable. Mice lacking either STAT5a or STAT5b
have mild defects in prolactin dependent mammary
differentiation or sexually dimorphic growth
hormone-dependent effects, respectively. Mice lacking
both STAT5a and STAT5b exhibit a perinatal lethal
phenotype and have multiple defects, including anemia
and a virtual absence of B and T lymphocytes. 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.
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. 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 = 140
Score = 27.7 bits (61), Expect = 8.5
Identities = 12/25 (48%), Positives = 18/25 (72%)
Query: 425 MSRAQAEALLSGRPDGTFLIRPSTT 449
+++ QA LL +PDGTFL+R S +
Sbjct: 26 VNKQQAHDLLINKPDGTFLLRFSDS 50
>gnl|CDD|223021 PHA03247, PHA03247, large tegument protein UL36; Provisional.
Length = 3151
Score = 29.1 bits (65), Expect = 8.6
Identities = 16/46 (34%), Positives = 21/46 (45%), Gaps = 4/46 (8%)
Query: 168 LPTFSSPPA----LPPRKLSPRPSATYVHSRQSSLDVAKMSSGPET 209
LP + P A +PP + +PRPS V SR D S+ P
Sbjct: 2555 LPPAAPPAAPDRSVPPPRPAPRPSEPAVTSRARRPDAPPQSARPRA 2600
>gnl|CDD|211336 cd02569, PseudoU_synth_ScPus3, Pseudouridine synthase,
Saccharomyces cerevisiae Pus3 like. This group consists
of eukaryotic pseudouridine synthases similar to S.
cerevisiae Pus3p, mouse Pus3p and, human PUS2.
Pseudouridine synthases catalyze the isomerization of
specific uridines in an RNA molecule to pseudouridines
(5-ribosyluracil, psi). No cofactors are required. S.
cerevisiae Pus3p makes psi38 and psi39 in tRNAs. Mouse
Pus3p has been shown to makes psi38 and, possibly also
psi 39, in tRNAs. Psi38 and psi39 are highly conserved
in tRNAs from eubacteria, archea and eukarya.
Length = 256
Score = 28.4 bits (64), Expect = 8.8
Identities = 14/52 (26%), Positives = 19/52 (36%), Gaps = 15/52 (28%)
Query: 156 PPTILIQSFTFVLPTFSSPPALPPRKLSPRPSATYVHSR----QSSLDVAKM 203
PP I I ++ V P FS+ R S R + LD+ M
Sbjct: 102 PPDIRILAWAPVPPDFSA-----------RFSCVSRTYRYFFPKGDLDIELM 142
>gnl|CDD|198239 cd10376, SH2_STAT5, Src homology 2 (SH2) domain found in signal
transducer and activator of transcription (STAT) 5
proteins. STAT5 is a member of the STAT family of
transcription factors. Two highly related proteins,
STAT5a and STAT5b are encoded by separate genes, but are
90% identical at the amino acid level. Both STAT5a and
STAT5b are ubiquitously expressed and functionally
interchangeable. Mice lacking either STAT5a or STAT5b
have mild defects in prolactin dependent mammary
differentiation or sexually dimorphic growth
hormone-dependent effects, respectively. Mice lacking
both STAT5a and STAT5b exhibit a perinatal lethal
phenotype and have multiple defects, including anemia
and a virtual absence of B and T lymphocytes. 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.
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. 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.
Length = 137
Score = 27.6 bits (61), Expect = 9.4
Identities = 12/25 (48%), Positives = 18/25 (72%)
Query: 425 MSRAQAEALLSGRPDGTFLIRPSTT 449
+++ QA LL +PDGTFL+R S +
Sbjct: 26 VNKQQAHDLLINKPDGTFLLRFSDS 50
>gnl|CDD|237132 PRK12539, PRK12539, RNA polymerase sigma factor; Provisional.
Length = 184
Score = 28.2 bits (63), Expect = 9.4
Identities = 17/64 (26%), Positives = 28/64 (43%), Gaps = 14/64 (21%)
Query: 50 GNASQVAELFHAYSGEIKSYNFSKL--------------EPALLAIMLKTYLKSLTEPLI 95
G+A+ L SG +++Y KL + AL+AI + + +PL
Sbjct: 18 GDAAAHRALLERLSGHLRAYYKGKLARIGRGAEEAEDLVQEALMAIHTRRHTYDPEQPLT 77
Query: 96 PYVY 99
P+VY
Sbjct: 78 PWVY 81
>gnl|CDD|198283 cd10420, SH2_STAT5b, Src homology 2 (SH2) domain found in signal
transducer and activator of transcription (STAT) 5b
proteins. STAT5 is a member of the STAT family of
transcription factors. Two highly related proteins,
STAT5a and STAT5b are encoded by separate genes, but are
90% identical at the amino acid level. Both STAT5a and
STAT5b are ubiquitously expressed and functionally
interchangeable. Mice lacking either STAT5a or STAT5b
have mild defects in prolactin dependent mammary
differentiation or sexually dimorphic growth
hormone-dependent effects, respectively. Mice lacking
both STAT5a and STAT5b exhibit a perinatal lethal
phenotype and have multiple defects, including anemia
and a virtual absence of B and T lymphocytes. 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.
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. 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 = 145
Score = 27.7 bits (61), Expect = 9.6
Identities = 12/25 (48%), Positives = 18/25 (72%)
Query: 425 MSRAQAEALLSGRPDGTFLIRPSTT 449
+++ QA LL +PDGTFL+R S +
Sbjct: 26 VNKQQAHDLLINKPDGTFLLRFSDS 50
>gnl|CDD|184326 PRK13788, PRK13788, adenylosuccinate synthetase; Provisional.
Length = 404
Score = 28.6 bits (64), Expect = 9.7
Identities = 19/45 (42%), Positives = 23/45 (51%), Gaps = 3/45 (6%)
Query: 219 WGDISRDDVNDKLADTADGTFLVRDTSTKNGEYTLTLRKGGTNKL 263
WGD + V D LA AD F+VR N +T+ KG T KL
Sbjct: 11 WGDEGKGKVVDALAPEAD--FVVRYQGGANAGHTVVA-KGKTFKL 52
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 0.387
Gapped
Lambda K H
0.267 0.0777 0.140
Matrix: BLOSUM62
Gap Penalties: Existence: 11, Extension: 1
Number of Sequences: 44354
Number of Hits to DB: 26,222,632
Number of extensions: 2544460
Number of successful extensions: 2340
Number of sequences better than 10.0: 1
Number of HSP's gapped: 2245
Number of HSP's successfully gapped: 235
Length of query: 523
Length of database: 10,937,602
Length adjustment: 101
Effective length of query: 422
Effective length of database: 6,457,848
Effective search space: 2725211856
Effective search space used: 2725211856
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: 61 (27.2 bits)