RPS-BLAST 2.2.26 [Sep-21-2011]
Database: CDD.v3.10
44,354 sequences; 10,937,602 total letters
Searching..................................................done
Query= psy12612
(116 letters)
>gnl|CDD|173624 cd00192, PTKc, Catalytic domain of Protein Tyrosine Kinases.
Protein Tyrosine Kinase (PTK) family, catalytic domain.
This PTKc family is part of a larger superfamily that
includes the catalytic domains of protein
serine/threonine kinases, RIO kinases, aminoglycoside
phosphotransferase, choline kinase, and phosphoinositide
3-kinase (PI3K). PTKs catalyze the transfer of the
gamma-phosphoryl group from ATP to tyrosine (tyr)
residues in protein substrates. They can be classified
into receptor and non-receptor tyr kinases. PTKs play
important roles in many cellular processes including,
lymphocyte activation, epithelium growth and
maintenance, metabolism control, organogenesis
regulation, survival, proliferation, differentiation,
migration, adhesion, motility, and morphogenesis.
Receptor tyr kinases (RTKs) are integral membrane
proteins which contain an extracellular ligand-binding
region, a transmembrane segment, and an intracellular
tyr kinase domain. RTKs are usually activated through
ligand binding, which causes dimerization and
autophosphorylation of the intracellular tyr kinase
catalytic domain, leading to intracellular signaling.
Some RTKs are orphan receptors with no known ligands.
Non-receptor (or cytoplasmic) tyr kinases are
distributed in different intracellular compartments and
are usually multi-domain proteins containing a catalytic
tyr kinase domain as well as various regulatory domains
such as SH3 and SH2. PTKs are usually autoinhibited and
require a mechanism for activation. In many PTKs, the
phosphorylation of tyr residues in the activation loop
is essential for optimal activity. Aberrant expression
of PTKs is associated with many development
abnormalities and cancers.
Length = 262
Score = 53.7 bits (130), Expect = 1e-09
Identities = 17/54 (31%), Positives = 28/54 (51%), Gaps = 4/54 (7%)
Query: 58 TTEIVESVRKGEKCLRPSLSELTCEEEVTAIMKRCWNEDPSERPDFTTLKAAIR 111
E++E +RKG + +P C +E+ +M CW DP +RP F+ L +
Sbjct: 213 NEEVLEYLRKGYRLPKPEY----CPDELYELMLSCWQLDPEDRPTFSELVERLE 262
Score = 51.4 bits (124), Expect = 6e-09
Identities = 19/51 (37%), Positives = 31/51 (60%), Gaps = 5/51 (9%)
Query: 13 DEIVESVRKGEKCLRPNLSELTCEEEVTAIMKRCWNEDPSERPDFTTEIVE 63
+E++E +RKG + +P C +E+ +M CW DP +RP F +E+VE
Sbjct: 214 EEVLEYLRKGYRLPKP----EYCPDELYELMLSCWQLDPEDRPTF-SELVE 259
>gnl|CDD|219530 pfam07714, Pkinase_Tyr, Protein tyrosine kinase.
Length = 258
Score = 52.9 bits (128), Expect = 2e-09
Identities = 16/48 (33%), Positives = 26/48 (54%), Gaps = 4/48 (8%)
Query: 59 TEIVESVRKGEKCLRPSLSELTCEEEVTAIMKRCWNEDPSERPDFTTL 106
E++E + G + RP C +E+ +M +CW DP +RP F+ L
Sbjct: 211 EEVLELLEDGYRLPRP----ENCPDELYELMLQCWAYDPEDRPTFSEL 254
Score = 52.9 bits (128), Expect = 2e-09
Identities = 18/50 (36%), Positives = 29/50 (58%), Gaps = 5/50 (10%)
Query: 14 EIVESVRKGEKCLRPNLSELTCEEEVTAIMKRCWNEDPSERPDFTTEIVE 63
E++E + G + RP C +E+ +M +CW DP +RP F +E+VE
Sbjct: 212 EVLELLEDGYRLPRP----ENCPDELYELMLQCWAYDPEDRPTF-SELVE 256
>gnl|CDD|214568 smart00221, STYKc, Protein kinase; unclassified specificity.
Phosphotransferases. The specificity of this class of
kinases can not be predicted. Possible dual-specificity
Ser/Thr/Tyr kinase.
Length = 258
Score = 52.2 bits (126), Expect = 4e-09
Identities = 17/47 (36%), Positives = 28/47 (59%), Gaps = 4/47 (8%)
Query: 60 EIVESVRKGEKCLRPSLSELTCEEEVTAIMKRCWNEDPSERPDFTTL 106
E++E ++KG + +P C E+ +M +CW EDP +RP F+ L
Sbjct: 212 EVLEYLKKGYRLPKPP----NCPPELYKLMLQCWAEDPEDRPTFSEL 254
Score = 51.0 bits (123), Expect = 9e-09
Identities = 19/51 (37%), Positives = 31/51 (60%), Gaps = 5/51 (9%)
Query: 13 DEIVESVRKGEKCLRPNLSELTCEEEVTAIMKRCWNEDPSERPDFTTEIVE 63
E++E ++KG + +P C E+ +M +CW EDP +RP F +E+VE
Sbjct: 211 AEVLEYLKKGYRLPKPP----NCPPELYKLMLQCWAEDPEDRPTF-SELVE 256
>gnl|CDD|197581 smart00219, TyrKc, Tyrosine kinase, catalytic domain.
Phosphotransferases. Tyrosine-specific kinase subfamily.
Length = 257
Score = 51.8 bits (125), Expect = 4e-09
Identities = 16/48 (33%), Positives = 27/48 (56%), Gaps = 4/48 (8%)
Query: 60 EIVESVRKGEKCLRPSLSELTCEEEVTAIMKRCWNEDPSERPDFTTLK 107
E++E ++ G + +P C E+ +M +CW EDP +RP F+ L
Sbjct: 211 EVLEYLKNGYRLPQPP----NCPPELYDLMLQCWAEDPEDRPTFSELV 254
Score = 50.6 bits (122), Expect = 1e-08
Identities = 18/51 (35%), Positives = 31/51 (60%), Gaps = 5/51 (9%)
Query: 13 DEIVESVRKGEKCLRPNLSELTCEEEVTAIMKRCWNEDPSERPDFTTEIVE 63
+E++E ++ G + +P C E+ +M +CW EDP +RP F +E+VE
Sbjct: 210 EEVLEYLKNGYRLPQPP----NCPPELYDLMLQCWAEDPEDRPTF-SELVE 255
>gnl|CDD|173637 cd05059, PTKc_Tec_like, Catalytic domain of Tec-like Protein
Tyrosine Kinases. Protein Tyrosine Kinase (PTK) family;
Tyrosine kinase expressed in hepatocellular carcinoma
(Tec) subfamily; catalytic (c) domain. The Tec subfamily
is composed of Tec, Btk, Bmx (Etk), Itk (Tsk, Emt), Rlk
(Txk), and similar proteins. The PTKc family is part of
a larger superfamily that includes the catalytic domains
of other kinases such as protein serine/threonine
kinases, RIO kinases, and phosphoinositide 3-kinase
(PI3K). PTKs catalyze the transfer of the
gamma-phosphoryl group from ATP to tyrosine (tyr)
residues in protein substrates. Tec kinases are
cytoplasmic (or nonreceptor) tyr kinases (nRTKs) with
similarity to Src kinases in that they contain Src
homology protein interaction domains (SH3, SH2)
N-terminal to the catalytic tyr kinase domain. Unlike
Src kinases, most Tec subfamily members (except Rlk)
also contain an N-terminal pleckstrin homology (PH)
domain, which binds the products of PI3K and allows
membrane recruitment and activation. In addition, some
members contain the Tec homology (TH) domain, which
contains proline-rich and zinc-binding regions. Tec
kinases form the second largest subfamily of nRTKs and
are expressed mainly by haematopoietic cells, although
Tec and Bmx are also found in endothelial cells. B-cells
express Btk and Tec, while T-cells express Itk, Txk, and
Tec. Collectively, Tec kinases are expressed in a
variety of myeloid cells such as mast cells, platelets,
macrophages, and dendritic cells. Each Tec kinase shows
a distinct cell-type pattern of expression. The function
of Tec kinases in lymphoid cells have been studied
extensively. They play important roles in the
development, differentiation, maturation, regulation,
survival, and function of B-cells and T-cells. Mutations
in Btk cause the severe B-cell immunodeficiency,
X-linked agammaglobulinaemia (XLA).
Length = 256
Score = 48.6 bits (116), Expect = 7e-08
Identities = 24/70 (34%), Positives = 35/70 (50%), Gaps = 5/70 (7%)
Query: 42 IMKRCWNEDPSERPDFT-TEIVESVRKGEKCLRPSLSELTCEEEVTAIMKRCWNEDPSER 100
+M ++E F+ +E+VESV G + RP L EV IM CW+E P +R
Sbjct: 190 LMWEVFSEGKMPYERFSNSEVVESVSAGYRLYRPKL----APTEVYTIMYSCWHEKPEDR 245
Query: 101 PDFTTLKAAI 110
P F L + +
Sbjct: 246 PAFKKLLSQL 255
Score = 45.1 bits (107), Expect = 1e-06
Identities = 20/46 (43%), Positives = 24/46 (52%), Gaps = 4/46 (8%)
Query: 14 EIVESVRKGEKCLRPNLSELTCEEEVTAIMKRCWNEDPSERPDFTT 59
E+VESV G + RP L EV IM CW+E P +RP F
Sbjct: 209 EVVESVSAGYRLYRPKL----APTEVYTIMYSCWHEKPEDRPAFKK 250
>gnl|CDD|133191 cd05060, PTKc_Syk_like, Catalytic domain of Spleen Tyrosine
Kinase-like Protein Tyrosine Kinases. Protein Tyrosine
Kinase (PTK) family; Spleen Tyrosine Kinase (Syk)
subfamily; catalytic (c) domain. The Syk subfamily is
composed of Syk, ZAP-70, Shark, and similar proteins.
The PTKc family is part of a larger superfamily that
includes the catalytic domains of other kinases such as
protein serine/threonine kinases, RIO kinases, and
phosphoinositide 3-kinase (PI3K). PTKs catalyze the
transfer of the gamma-phosphoryl group from ATP to
tyrosine (tyr) residues in protein substrates. Syk
subfamily kinases are cytoplasmic (or nonreceptor) tyr
kinases containing two Src homology 2 (SH2) domains
N-terminal to the catalytic tyr kinase domain. They are
involved in the signaling downstream of activated
receptors (including B-cell, T-cell, and Fc receptors)
that contain ITAMs (immunoreceptor tyr activation
motifs), leading to processes such as cell
proliferation, differentiation, survival, adhesion,
migration, and phagocytosis. Syk is important in B-cell
receptor (BCR) signaling, while Zap-70 is primarily
expressed in T-cells and NK cells, and is a crucial
component in T-cell receptor (TCR) signaling. Syk also
plays a central role in Fc receptor-mediated
phagocytosis in the adaptive immune system. Shark is
exclusively expressed in ectodermally derived epithelia,
and is localized preferentially to the apical surface of
the epithelial cells, it may play a role in a signaling
pathway for epithelial cell polarity.
Length = 257
Score = 46.6 bits (111), Expect = 4e-07
Identities = 17/52 (32%), Positives = 28/52 (53%), Gaps = 4/52 (7%)
Query: 60 EIVESVRKGEKCLRPSLSELTCEEEVTAIMKRCWNEDPSERPDFTTLKAAIR 111
E++ + GE+ RP C +E+ +IM CW P +RP F+ L++ R
Sbjct: 206 EVIAMLESGERLPRPEE----CPQEIYSIMLSCWKYRPEDRPTFSELESTFR 253
Score = 45.0 bits (107), Expect = 1e-06
Identities = 15/46 (32%), Positives = 24/46 (52%), Gaps = 4/46 (8%)
Query: 14 EIVESVRKGEKCLRPNLSELTCEEEVTAIMKRCWNEDPSERPDFTT 59
E++ + GE+ RP C +E+ +IM CW P +RP F+
Sbjct: 206 EVIAMLESGERLPRPEE----CPQEIYSIMLSCWKYRPEDRPTFSE 247
>gnl|CDD|173626 cd05034, PTKc_Src_like, Catalytic domain of Src kinase-like Protein
Tyrosine Kinases. Protein Tyrosine Kinase (PTK) family;
Src kinase subfamily; catalytic (c) domain. Src
subfamily members include Src, Lck, Hck, Blk, Lyn, Fgr,
Fyn, Yrk, and Yes. The PTKc family is part of a larger
superfamily that includes the catalytic domains of other
kinases such as protein serine/threonine kinases, RIO
kinases, and phosphoinositide 3-kinase (PI3K). PTKs
catalyze the transfer of the gamma-phosphoryl group from
ATP to tyrosine (tyr) residues in protein substrates.
Src (or c-Src) proteins are cytoplasmic (or
non-receptor) tyr kinases which are anchored to the
plasma membrane. They contain an N-terminal SH4 domain
with a myristoylation site, followed by SH3 and SH2
domains, a tyr kinase domain, and a regulatory
C-terminal region containing a conserved tyr. They are
activated by autophosphorylation at the tyr kinase
domain, but are negatively regulated by phosphorylation
at the C-terminal tyr by Csk (C-terminal Src Kinase).
Src proteins are involved in signaling pathways that
regulate cytokine and growth factor responses,
cytoskeleton dynamics, cell proliferation, survival, and
differentiation. They were identified as the first
proto-oncogene products, and they regulate cell
adhesion, invasion, and motility in cancer cells and
tumor vasculature, contributing to cancer progression
and metastasis. Src kinases are overexpressed in a
variety of human cancers, making them attractive targets
for therapy. They are also implicated in acute
inflammatory responses and osteoclast function. Src,
Fyn, Yes, and Yrk are widely expressed, while Blk, Lck,
Hck, Fgr, and Lyn show a limited expression pattern.
Length = 261
Score = 45.4 bits (108), Expect = 9e-07
Identities = 19/48 (39%), Positives = 28/48 (58%), Gaps = 4/48 (8%)
Query: 59 TEIVESVRKGEKCLRPSLSELTCEEEVTAIMKRCWNEDPSERPDFTTL 106
E++E V +G + RP C EE+ +M +CW++DP ERP F L
Sbjct: 211 REVLEQVERGYRMPRPP----NCPEELYDLMLQCWDKDPEERPTFEYL 254
Score = 42.3 bits (100), Expect = 1e-05
Identities = 18/46 (39%), Positives = 27/46 (58%), Gaps = 4/46 (8%)
Query: 14 EIVESVRKGEKCLRPNLSELTCEEEVTAIMKRCWNEDPSERPDFTT 59
E++E V +G + RP C EE+ +M +CW++DP ERP F
Sbjct: 212 EVLEQVERGYRMPRPP----NCPEELYDLMLQCWDKDPEERPTFEY 253
>gnl|CDD|173657 cd05113, PTKc_Btk_Bmx, Catalytic domain of the Protein Tyrosine
Kinases, Bruton's tyrosine kinase and Bone marrow kinase
on the X chromosome. Protein Tyrosine Kinase (PTK)
family; Bruton's tyrosine kinase (Btk) and Bone marrow
kinase on the X chromosome (Bmx); catalytic (c) domain.
The PTKc family is part of a larger superfamily that
includes the catalytic domains of other kinases such as
protein serine/threonine kinases, RIO kinases, and
phosphoinositide 3-kinase (PI3K). PTKs catalyze the
transfer of the gamma-phosphoryl group from ATP to
tyrosine (tyr) residues in protein substrates. Btk and
Bmx (also named Etk) are members of the Tec subfamily of
proteins, which are cytoplasmic (or nonreceptor) tyr
kinases with similarity to Src kinases in that they
contain Src homology protein interaction domains (SH3,
SH2) N-terminal to the catalytic tyr kinase domain.
Unlike Src kinases, most Tec subfamily members (except
Rlk) also contain an N-terminal pleckstrin homology (PH)
domain, which binds the products of PI3K and allows
membrane recruitment and activation. In addition, Btk
contains the Tec homology (TH) domain with proline-rich
and zinc-binding regions. Tec kinases are expressed
mainly by haematopoietic cells. Btk is expressed in
B-cells, and a variety of myeloid cells including mast
cells, platelets, neutrophils, and dendrictic cells. It
interacts with a variety of partners, from cytosolic
proteins to nuclear transcription factors, suggesting a
diversity of functions. Stimulation of a diverse array
of cell surface receptors, including antigen engagement
of the B-cell receptor (BCR), leads to PH-mediated
membrane translocation of Btk and subsequent
phosphorylation by Src kinase and activation. Btk plays
an important role in the life cycle of B-cells including
their development, differentiation, proliferation,
survival, and apoptosis. Mutations in Btk cause the
primary immunodeficiency disease, X-linked
agammaglobulinaemia (XLA) in humans. Bmx is primarily
expressed in bone marrow and the arterial endothelium,
and plays an important role in ischemia-induced
angiogenesis. It facilitates arterial growth, capillary
formation, vessel maturation, and bone marrow-derived
endothelial progenitor cell mobilization.
Length = 256
Score = 45.3 bits (107), Expect = 1e-06
Identities = 25/60 (41%), Positives = 34/60 (56%), Gaps = 5/60 (8%)
Query: 51 PSERPDFTTEIVESVRKGEKCLRPSLSELTCEEEVTAIMKRCWNEDPSERPDFTTLKAAI 110
P ER + +E VE V +G + RP L+ E+V AIM CW+E ERP F L ++I
Sbjct: 201 PYERFN-NSETVEKVSQGLRLYRPHLAS----EKVYAIMYSCWHEKAEERPTFQQLLSSI 255
Score = 41.8 bits (98), Expect = 2e-05
Identities = 21/49 (42%), Positives = 27/49 (55%), Gaps = 4/49 (8%)
Query: 9 RILRDEIVESVRKGEKCLRPNLSELTCEEEVTAIMKRCWNEDPSERPDF 57
R E VE V +G + RP+L+ E+V AIM CW+E ERP F
Sbjct: 204 RFNNSETVEKVSQGLRLYRPHLAS----EKVYAIMYSCWHEKAEERPTF 248
>gnl|CDD|173634 cd05053, PTKc_FGFR, Catalytic domain of the Protein Tyrosine
Kinases, Fibroblast Growth Factor Receptors. Protein
Tyrosine Kinase (PTK) family; Fibroblast Growth Factor
Receptor (FGFR) subfamily; catalytic (c) domain. The
FGFR subfamily consists of FGFR1, FGFR2, FGFR3, FGFR4,
and similar proteins. The PTKc family is part of a
larger superfamily that includes the catalytic domains
of other kinases such as protein serine/threonine
kinases, RIO kinases, and phosphoinositide 3-kinase
(PI3K).PTKs catalyze the transfer of the
gamma-phosphoryl group from ATP to tyrosine (tyr)
residues in protein substrates. FGFR subfamily members
are receptor tyr kinases (RTKs) containing an
extracellular ligand-binding region with three
immunoglobulin-like domains, a transmembrane segment,
and an intracellular catalytic domain. The binding of
FGFRs to their ligands, the FGFs, and to heparin/heparan
sulfate (HS) results in the formation of a ternary
complex, which leads to receptor dimerization and
activation, and intracellular signaling. There are at
least 23 FGFs and four types of FGFRs. The binding of
FGFs to FGFRs is promiscuous, in that a receptor may be
activated by several ligands and a ligand may bind to
more that one type of receptor. FGF/FGFR signaling is
important in the regulation of embryonic development,
homeostasis, and regenerative processes. Depending on
the cell type and stage, FGFR signaling produces diverse
cellular responses including proliferation, growth
arrest, differentiation, and apoptosis. Aberrant
signaling leads to many human diseases such as skeletal,
olfactory, and metabolic disorders, as well as cancer.
Length = 293
Score = 43.9 bits (104), Expect = 3e-06
Identities = 15/47 (31%), Positives = 28/47 (59%), Gaps = 4/47 (8%)
Query: 60 EIVESVRKGEKCLRPSLSELTCEEEVTAIMKRCWNEDPSERPDFTTL 106
E+ + +++G + +P C +E+ +M+ CW+E PS+RP F L
Sbjct: 242 ELFKLLKEGYRMEKPQN----CTQELYHLMRDCWHEVPSQRPTFKQL 284
Score = 42.8 bits (101), Expect = 8e-06
Identities = 16/50 (32%), Positives = 31/50 (62%), Gaps = 5/50 (10%)
Query: 14 EIVESVRKGEKCLRPNLSELTCEEEVTAIMKRCWNEDPSERPDFTTEIVE 63
E+ + +++G + +P C +E+ +M+ CW+E PS+RP F ++VE
Sbjct: 242 ELFKLLKEGYRMEKP----QNCTQELYHLMRDCWHEVPSQRPTF-KQLVE 286
>gnl|CDD|133199 cd05068, PTKc_Frk_like, Catalytic domain of Fyn-related kinase-like
Protein Tyrosine Kinases. Protein Tyrosine Kinase (PTK)
family; Human Fyn-related kinase (Frk) and similar
proteins; catalytic (c) domain. The PTKc family is part
of a larger superfamily that includes the catalytic
domains of other kinases such as protein
serine/threonine kinases, RIO kinases, and
phosphoinositide 3-kinase (PI3K). PTKs catalyze the
transfer of the gamma-phosphoryl group from ATP to
tyrosine (tyr) residues in protein substrates. Frk and
Srk are members of the Src subfamily of proteins, which
are cytoplasmic (or non-receptor) tyr kinases. Src
kinases contain an N-terminal SH4 domain with a
myristoylation site, followed by SH3 and SH2 domains, a
tyr kinase domain, and a regulatory C-terminal region
containing a conserved tyr. They are activated by
autophosphorylation at the tyr kinase domain, but are
negatively regulated by phosphorylation at the
C-terminal tyr by Csk (C-terminal Src Kinase). Src
proteins are involved in signaling pathways that
regulate cytokine and growth factor responses,
cytoskeleton dynamics, cell proliferation, survival, and
differentiation. Frk, also known as Rak, is specifically
expressed in liver, lung, kidney, intestine, mammary
glands, and the islets of Langerhans. Rodent homologs
were previously referred to as GTK (gastrointestinal tyr
kinase), BSK (beta-cell Src-like kinase), or IYK
(intestinal tyr kinase). Studies in mice reveal that Frk
is not essential for viability. It plays a role in the
signaling that leads to cytokine-induced beta-cell death
in Type I diabetes. It also regulates beta-cell number
during embryogenesis and early in life.
Length = 261
Score = 42.8 bits (101), Expect = 8e-06
Identities = 18/48 (37%), Positives = 27/48 (56%), Gaps = 4/48 (8%)
Query: 60 EIVESVRKGEKCLRPSLSELTCEEEVTAIMKRCWNEDPSERPDFTTLK 107
E+++ V +G + P C +E+ IM CW EDP +RP F TL+
Sbjct: 212 EVLQQVDQGYRMPCPP----GCPKELYDIMLDCWKEDPDDRPTFETLQ 255
Score = 38.6 bits (90), Expect = 2e-04
Identities = 17/46 (36%), Positives = 25/46 (54%), Gaps = 4/46 (8%)
Query: 14 EIVESVRKGEKCLRPNLSELTCEEEVTAIMKRCWNEDPSERPDFTT 59
E+++ V +G + P C +E+ IM CW EDP +RP F T
Sbjct: 212 EVLQQVDQGYRMPCPP----GCPKELYDIMLDCWKEDPDDRPTFET 253
>gnl|CDD|133212 cd05081, PTKc_Jak2_Jak3_rpt2, Catalytic (repeat 2) domain of the
Protein Tyrosine Kinases, Janus kinases 2 and 3.
Protein Tyrosine Kinase (PTK) family; Janus kinase 2
(Jak2) and Jak3; catalytic (c) domain (repeat 2). The
PTKc family is part of a larger superfamily that
includes the catalytic domains of other kinases such as
protein serine/threonine kinases, RIO kinases, and
phosphoinositide 3-kinase (PI3K). PTKs catalyze the
transfer of the gamma-phosphoryl group from ATP to
tyrosine (tyr) residues in protein substrates. Jak2 and
Jak3 are members of the Janus kinase (Jak) subfamily of
proteins, which are cytoplasmic (or nonreceptor) tyr
kinases containing an N-terminal FERM domain, followed
by a Src homology 2 (SH2) domain, a pseudokinase domain,
and a C-terminal catalytic tyr kinase domain. Jaks are
crucial for cytokine receptor signaling. They are
activated by autophosphorylation upon cytokine-induced
receptor aggregation, and subsequently trigger
downstream signaling events such as the phosphorylation
of signal transducers and activators of transcription
(STATs). Jak2 is widely expressed in many tissues while
Jak3 is expressed only in hematopoietic cells. Jak2 is
essential for the signaling of hormone-like cytokines
such as growth hormone, erythropoietin, thrombopoietin,
and prolactin, as well as some IFNs and cytokines that
signal through the IL-3 and gp130 receptors. Jak3 binds
the shared receptor subunit common gamma chain and thus,
is essential in the signaling of cytokines that use it
such as IL-2, IL-4, IL-7, IL-9, IL-15, and IL-21.
Disruption of Jak2 in mice results in an embryonic
lethal phenotype with multiple defects including
erythropoietic and cardiac abnormalities. It is the only
Jak gene that results in a lethal phenotype when
disrupted in mice. A mutation in the pseudokinase domain
of Jak2, V617F, is present in many myeloproliferative
diseases, including almost all patients with
polycythemia vera, and 50% of patients with essential
thrombocytosis and myelofibrosis. Jak3 is important in
lymphoid development and myeloid cell differentiation.
Inactivating mutations in Jak3 have been reported in
humans with severe combined immunodeficiency (SCID).
Length = 284
Score = 42.1 bits (99), Expect = 1e-05
Identities = 16/33 (48%), Positives = 21/33 (63%)
Query: 81 CEEEVTAIMKRCWNEDPSERPDFTTLKAAIRKL 113
C E+ AIMK CWN DPS+RP F+ L + +
Sbjct: 251 CPAEIYAIMKECWNNDPSQRPSFSELALQVEAI 283
Score = 39.7 bits (93), Expect = 1e-04
Identities = 15/24 (62%), Positives = 18/24 (75%)
Query: 35 CEEEVTAIMKRCWNEDPSERPDFT 58
C E+ AIMK CWN DPS+RP F+
Sbjct: 251 CPAEIYAIMKECWNNDPSQRPSFS 274
>gnl|CDD|133219 cd05088, PTKc_Tie2, Catalytic domain of the Protein Tyrosine
Kinase, Tie2. Protein Tyrosine Kinase (PTK) family;
Tie2; catalytic (c) domain. The PTKc family is part of a
larger superfamily that includes the catalytic domains
of other kinases such as protein serine/threonine
kinases, RIO kinases, and phosphoinositide 3-kinase
(PI3K). PTKs catalyze the transfer of the
gamma-phosphoryl group from ATP to tyrosine (tyr)
residues in protein substrates. Tie2 is a receptor tyr
kinase (RTK) containing an extracellular region, a
transmembrane segment, and an intracellular catalytic
domain. The extracellular region contains an
immunoglobulin (Ig)-like domain, three epidermal growth
factor (EGF)-like domains, a second Ig-like domain, and
three fibronectin type III repeats. Tie2 is expressed
mainly in endothelial cells and hematopoietic stem
cells. It is also found in a subset of tumor-associated
monocytes and eosinophils. The angiopoietins (Ang-1 to
Ang-4) serve as ligands for Tie2. The binding of Ang-1
to Tie2 leads to receptor autophosphorylation and
activation, promoting cell migration and survival. In
contrast, Ang-2 binding to Tie2 does not result in the
same response, suggesting that Ang-2 may function as an
antagonist. Tie2 signaling plays key regulatory roles in
vascular integrity and quiescence, and in inflammation.
Length = 303
Score = 41.9 bits (98), Expect = 1e-05
Identities = 17/54 (31%), Positives = 32/54 (59%), Gaps = 4/54 (7%)
Query: 60 EIVESVRKGEKCLRPSLSELTCEEEVTAIMKRCWNEDPSERPDFTTLKAAIRKL 113
E+ E + +G + +P L C++EV +M++CW E P ERP F + ++ ++
Sbjct: 231 ELYEKLPQGYRLEKP----LNCDDEVYDLMRQCWREKPYERPSFAQILVSLNRM 280
Score = 41.1 bits (96), Expect = 3e-05
Identities = 24/73 (32%), Positives = 38/73 (52%), Gaps = 6/73 (8%)
Query: 14 EIVESVRKGEKCLRPNLSELTCEEEVTAIMKRCWNEDPSERPDFTTEIVESVRKGEKCLR 73
E+ E + +G + +P L C++EV +M++CW E P ERP F +V R E+ R
Sbjct: 231 ELYEKLPQGYRLEKP----LNCDDEVYDLMRQCWREKPYERPSFAQILVSLNRMLEE--R 284
Query: 74 PSLSELTCEEEVT 86
+ T E+ T
Sbjct: 285 KTYVNTTLYEKFT 297
>gnl|CDD|133167 cd05035, PTKc_Axl_like, Catalytic Domain of Axl-like Protein
Tyrosine Kinases. Protein Tyrosine Kinase (PTK) family;
Axl subfamily; catalytic (c) domain. The PTKc family is
part of a larger superfamily that includes the catalytic
domains of other kinases such as protein
serine/threonine kinases, RIO kinases, and
phosphoinositide 3-kinase (PI3K). The Axl subfamily
consists of Axl, Tyro3 (or Sky), Mer (or Mertk), and
similar proteins. PTKs catalyze the transfer of the
gamma-phosphoryl group from ATP to tyrosine (tyr)
residues in protein substrates. Axl subfamily members
are receptor tyr kinases (RTKs) containing an
extracellular ligand-binding region with two
immunoglobulin-like domains followed by two fibronectin
type III repeats, a transmembrane segment, and an
intracellular catalytic domain. Binding to their
ligands, Gas6 and protein S, leads to receptor
dimerization, autophosphorylation, activation, and
intracellular signaling. Axl subfamily members are
implicated in a variety of cellular effects including
survival, proliferation, migration, and phagocytosis.
They are also associated with several types of cancer as
well as inflammatory, autoimmune, vascular, and kidney
diseases. Mer is named after its original reported
expression pattern (monocytes, epithelial, and
reproductive tissues). It is required for the ingestion
of apoptotic cells by phagocytes such as macrophages,
retinal pigment epithelial cells, and dendritic cells.
Mer is also important in maintaining immune homeostasis.
Length = 273
Score = 42.1 bits (99), Expect = 1e-05
Identities = 17/54 (31%), Positives = 28/54 (51%), Gaps = 4/54 (7%)
Query: 60 EIVESVRKGEKCLRPSLSELTCEEEVTAIMKRCWNEDPSERPDFTTLKAAIRKL 113
EI + +R G + +P C +E+ +M CW DP +RP FT L+ + +
Sbjct: 223 EIYDYLRHGNRLKQPE----DCLDELYDLMYSCWRADPKDRPTFTKLREVLENI 272
Score = 39.4 bits (92), Expect = 1e-04
Identities = 19/67 (28%), Positives = 28/67 (41%), Gaps = 16/67 (23%)
Query: 14 EIVESVRKGEKCLRPNLSELTCEEEVTAIMKRCWNEDPSERPDFTTEIVESVRKGEKCLR 73
EI + +R G + +P C +E+ +M CW DP +RP FT LR
Sbjct: 223 EIYDYLRHGNRLKQPE----DCLDELYDLMYSCWRADPKDRPTFT------------KLR 266
Query: 74 PSLSELT 80
L +
Sbjct: 267 EVLENIL 273
>gnl|CDD|133172 cd05040, PTKc_Ack_like, Catalytic domain of the Protein Tyrosine
Kinase, Activated Cdc42-associated kinase. Protein
Tyrosine Kinase (PTK) family; Activated Cdc42-associated
kinase (Ack) subfamily; catalytic (c) domain. Ack
subfamily members include Ack1, thirty-eight-negative
kinase 1 (Tnk1), and similar proteins. The PTKc family
is part of a larger superfamily that includes the
catalytic domains of other kinases such as protein
serine/threonine kinases, RIO kinases, and
phosphoinositide 3-kinase (PI3K). PTKs catalyze the
transfer of the gamma-phosphoryl group from ATP to
tyrosine (tyr) residues in protein substrates. Ack
subfamily members are cytoplasmic (or nonreceptor) tyr
kinases containing an N-terminal catalytic domain, an
SH3 domain, a Cdc42-binding CRIB domain, and a
proline-rich region. They are mainly expressed in brain
and skeletal tissues and are involved in the regulation
of cell adhesion and growth, receptor degradation, and
axonal guidance. Ack1 is also associated with
androgen-independent prostate cancer progression. Tnk1
regulates TNFalpha signaling and may play an important
role in cell death.
Length = 257
Score = 41.2 bits (97), Expect = 3e-05
Identities = 14/50 (28%), Positives = 30/50 (60%), Gaps = 5/50 (10%)
Query: 60 EIVESV-RKGEKCLRPSLSELTCEEEVTAIMKRCWNEDPSERPDFTTLKA 108
+I++ + ++GE+ RP C +++ +M +CW +P++RP F L+
Sbjct: 208 QILKKIDKEGERLERPE----ACPQDIYNVMLQCWAHNPADRPTFAALRE 253
Score = 39.7 bits (93), Expect = 8e-05
Identities = 13/45 (28%), Positives = 28/45 (62%), Gaps = 5/45 (11%)
Query: 14 EIVESV-RKGEKCLRPNLSELTCEEEVTAIMKRCWNEDPSERPDF 57
+I++ + ++GE+ RP C +++ +M +CW +P++RP F
Sbjct: 208 QILKKIDKEGERLERPE----ACPQDIYNVMLQCWAHNPADRPTF 248
>gnl|CDD|173640 cd05067, PTKc_Lck_Blk, Catalytic domain of the Protein Tyrosine
Kinases, Lymphocyte-specific kinase and Blk. Protein
Tyrosine Kinase (PTK) family; Lck and Blk kinases;
catalytic (c) domain. The PTKc family is part of a
larger superfamily that includes the catalytic domains
of other kinases such as protein serine/threonine
kinases, RIO kinases, and phosphoinositide 3-kinase
(PI3K). PTKs catalyze the transfer of the
gamma-phosphoryl group from ATP to tyrosine (tyr)
residues in protein substrates. Lck (lymphocyte-specific
kinase) and Blk are members of the Src subfamily of
proteins, which are cytoplasmic (or non-receptor) tyr
kinases. Src kinases contain an N-terminal SH4 domain
with a myristoylation site, followed by SH3 and SH2
domains, a tyr kinase domain, and a regulatory
C-terminal region containing a conserved tyr. They are
activated by autophosphorylation at the tyr kinase
domain, but are negatively regulated by phosphorylation
at the C-terminal tyr by Csk (C-terminal Src Kinase).
Src proteins are involved in signaling pathways that
regulate cytokine and growth factor responses,
cytoskeleton dynamics, cell proliferation, survival, and
differentiation. Lck is expressed in T-cells and natural
killer (NK) cells. It plays a critical role in T-cell
maturation, activation, and T-cell receptor (TCR)
signaling. Lck phosphorylates ITAM (immunoreceptor tyr
activation motif) sequences on several subunits of TCRs,
leading to the activation of different second messenger
cascades. Phosphorylated ITAMs serve as binding sites
for other signaling factor such as Syk and ZAP-70,
leading to their activation and propagation of
downstream events. In addition, Lck regulates
drug-induced apoptosis by interfering with the
mitochondrial death pathway. The apototic role of Lck is
independent of its primary function in T-cell signaling.
Blk is expressed specifically in B-cells. It is involved
in pre-BCR (B-cell receptor) signaling.
Length = 260
Score = 40.6 bits (95), Expect = 4e-05
Identities = 17/51 (33%), Positives = 30/51 (58%), Gaps = 4/51 (7%)
Query: 60 EIVESVRKGEKCLRPSLSELTCEEEVTAIMKRCWNEDPSERPDFTTLKAAI 110
E+++++ +G + RP C EE+ +M+ CW E P ERP F L++ +
Sbjct: 211 EVIQNLERGYRMPRPD----NCPEELYELMRLCWKEKPEERPTFEYLRSVL 257
Score = 40.2 bits (94), Expect = 7e-05
Identities = 19/52 (36%), Positives = 31/52 (59%), Gaps = 6/52 (11%)
Query: 14 EIVESVRKGEKCLRPNLSELTCEEEVTAIMKRCWNEDPSERPDFTTEIVESV 65
E+++++ +G + RP+ C EE+ +M+ CW E P ERP F E + SV
Sbjct: 211 EVIQNLERGYRMPRPD----NCPEELYELMRLCWKEKPEERPTF--EYLRSV 256
>gnl|CDD|133171 cd05039, PTKc_Csk_like, Catalytic domain of C-terminal Src
kinase-like Protein Tyrosine Kinases. Protein Tyrosine
Kinase (PTK) family; C-terminal Src kinase (Csk)
subfamily; catalytic (c) domain. The Csk subfamily is
composed of Csk, Chk, and similar proteins. The PTKc
family is part of a larger superfamily that includes the
catalytic domains of other kinases such as protein
serine/threonine kinases, RIO kinases, and
phosphoinositide 3-kinase (PI3K). PTKs catalyze the
transfer of the gamma-phosphoryl group from ATP to
tyrosine (tyr) residues in protein substrates. Csk
subfamily kinases are cytoplasmic (or nonreceptor) tyr
kinases containing the Src homology domains, SH3 and
SH2, N-terminal to the catalytic tyr kinase domain. They
negatively regulate the activity of Src kinases that are
anchored to the plasma membrane. To inhibit Src kinases,
Csk and Chk are translocated to the membrane via binding
to specific transmembrane proteins, G-proteins, or
adaptor proteins near the membrane. Csk catalyzes the
tyr phosphorylation of the regulatory C-terminal tail of
Src kinases, resulting in their inactivation. Chk
inhibit Src kinases using a noncatalytic mechanism by
simply binding to them. As negative regulators of Src
kinases, Csk and Chk play important roles in cell
proliferation, survival, and differentiation, and
consequently, in cancer development and progression.
Length = 256
Score = 40.8 bits (96), Expect = 4e-05
Identities = 19/49 (38%), Positives = 25/49 (51%), Gaps = 4/49 (8%)
Query: 9 RILRDEIVESVRKGEKCLRPNLSELTCEEEVTAIMKRCWNEDPSERPDF 57
RI ++V V KG + P C EV +MK CW DP++RP F
Sbjct: 202 RIPLKDVVPHVEKGYRMEAPE----GCPPEVYKVMKDCWELDPAKRPTF 246
Score = 40.5 bits (95), Expect = 5e-05
Identities = 20/57 (35%), Positives = 28/57 (49%), Gaps = 7/57 (12%)
Query: 60 EIVESVRKGEKCLRPSLSELTCEEEVTAIMKRCWNEDPSERPDFTTLKAAIRKLNKI 116
++V V KG + P C EV +MK CW DP++RP F L+ +L I
Sbjct: 207 DVVPHVEKGYRMEAPE----GCPPEVYKVMKDCWELDPAKRPTFKQLR---EQLALI 256
>gnl|CDD|133213 cd05082, PTKc_Csk, Catalytic domain of the Protein Tyrosine Kinase,
C-terminal Src kinase. Protein Tyrosine Kinase (PTK)
family; C-terminal Src kinase (Csk); catalytic (c)
domain. The PTKc family is part of a larger superfamily
that includes the catalytic domains of other kinases
such as protein serine/threonine kinases, RIO kinases,
and phosphoinositide 3-kinase (PI3K). PTKs catalyze the
transfer of the gamma-phosphoryl group from ATP to
tyrosine (tyr) residues in protein substrates. The Csk
subfamily kinases are cytoplasmic (or nonreceptor) tyr
kinases containing the Src homology domains, SH3 and
SH2, N-terminal to the catalytic tyr kinase domain. They
negatively regulate the activity of Src kinases that are
anchored to the plasma membrane. To inhibit Src kinases,
Csk is translocated to the membrane via binding to
specific transmembrane proteins, G-proteins, or adaptor
proteins near the membrane. Csk catalyzes the tyr
phosphorylation of the regulatory C-terminal tail of Src
kinases, resulting in their inactivation. Csk is
expressed in a wide variety of tissues. As a negative
regulator of Src, Csk plays a role in cell
proliferation, survival, and differentiation, and
consequently, in cancer development and progression. In
addition, Csk also shows Src-independent functions. It
is a critical component in G-protein signaling, and
plays a role in cytoskeletal reorganization and cell
migration.
Length = 256
Score = 40.3 bits (94), Expect = 5e-05
Identities = 18/49 (36%), Positives = 25/49 (51%), Gaps = 4/49 (8%)
Query: 9 RILRDEIVESVRKGEKCLRPNLSELTCEEEVTAIMKRCWNEDPSERPDF 57
RI ++V V KG K P+ C V +MK+CW+ D + RP F
Sbjct: 202 RIPLKDVVPRVEKGYKMDAPD----GCPPVVYDVMKQCWHLDAATRPSF 246
Score = 40.0 bits (93), Expect = 7e-05
Identities = 17/48 (35%), Positives = 24/48 (50%), Gaps = 4/48 (8%)
Query: 60 EIVESVRKGEKCLRPSLSELTCEEEVTAIMKRCWNEDPSERPDFTTLK 107
++V V KG K P C V +MK+CW+ D + RP F L+
Sbjct: 207 DVVPRVEKGYKMDAPD----GCPPVVYDVMKQCWHLDAATRPSFLQLR 250
>gnl|CDD|173641 cd05072, PTKc_Lyn, Catalytic domain of the Protein Tyrosine Kinase,
Lyn. Protein Tyrosine Kinase (PTK) family; Lyn kinase;
catalytic (c) domain. The PTKc family is part of a
larger superfamily that includes the catalytic domains
of other kinases such as protein serine/threonine
kinases, RIO kinases, and phosphoinositide 3-kinase
(PI3K). PTKs catalyze the transfer of the
gamma-phosphoryl group from ATP to tyrosine (tyr)
residues in protein substrates. Lyn is a member of the
Src subfamily of proteins, which are cytoplasmic (or
non-receptor) tyr kinases. Src kinases contain an
N-terminal SH4 domain with a myristoylation site,
followed by SH3 and SH2 domains, a tyr kinase domain,
and a regulatory C-terminal region containing a
conserved tyr. They are activated by autophosphorylation
at the tyr kinase domain, but are negatively regulated
by phosphorylation at the C-terminal tyr by Csk
(C-terminal Src Kinase). Src proteins are involved in
signaling pathways that regulate cytokine and growth
factor responses, cytoskeleton dynamics, cell
proliferation, survival, and differentiation. Lyn is
expressed in B lymphocytes and myeloid cells. It
exhibits both positive and negative regulatory roles in
B cell receptor (BCR) signaling. Lyn, as well as Fyn and
Blk, promotes B cell activation by phosphorylating ITAMs
(immunoreceptor tyr activation motifs) in CD19 and in Ig
components of BCR. It negatively regulates signaling by
its unique ability to phosphorylate ITIMs
(immunoreceptor tyr inhibition motifs) in cell surface
receptors like CD22 and CD5. Lyn also plays an important
role in G-CSF receptor signaling by phosphorylating a
variety of adaptor molecules.
Length = 261
Score = 40.4 bits (94), Expect = 5e-05
Identities = 15/52 (28%), Positives = 29/52 (55%), Gaps = 4/52 (7%)
Query: 59 TEIVESVRKGEKCLRPSLSELTCEEEVTAIMKRCWNEDPSERPDFTTLKAAI 110
++++ ++++G + R C +E+ IMK CW E ERP F L++ +
Sbjct: 211 SDVMSALQRGYRMPRME----NCPDELYDIMKTCWKEKAEERPTFDYLQSVL 258
Score = 38.5 bits (89), Expect = 3e-04
Identities = 14/44 (31%), Positives = 24/44 (54%), Gaps = 4/44 (9%)
Query: 14 EIVESVRKGEKCLRPNLSELTCEEEVTAIMKRCWNEDPSERPDF 57
+++ ++++G + R C +E+ IMK CW E ERP F
Sbjct: 212 DVMSALQRGYRMPRME----NCPDELYDIMKTCWKEKAEERPTF 251
>gnl|CDD|173658 cd05114, PTKc_Tec_Rlk, Catalytic domain of the Protein Tyrosine
Kinases, Tyrosine kinase expressed in hepatocellular
carcinoma and Resting lymphocyte kinase. Protein
Tyrosine Kinase (PTK) family; Tyrosine kinase expressed
in hepatocellular carcinoma (Tec) and Resting lymphocyte
kinase (Rlk); catalytic (c) domain. The PTKc family is
part of a larger superfamily, that includes the
catalytic domains of other kinases such as protein
serine/threonine kinases, RIO kinases, and
phosphoinositide 3-kinase (PI3K). PTKs catalyze the
transfer of the gamma-phosphoryl group from ATP to
tyrosine (tyr) residues in protein substrates. Tec and
Rlk (also named Txk) are members of the Tec subfamily of
proteins, which are cytoplasmic (or nonreceptor) tyr
kinases with similarity to Src kinases in that they
contain Src homology protein interaction domains (SH3,
SH2) N-terminal to the catalytic tyr kinase domain.
Unlike Src kinases, most Tec subfamily members (except
Rlk) also contain an N-terminal pleckstrin homology (PH)
domain, which binds the products of PI3K and allows
membrane recruitment and activation. Instead of PH, Rlk
contains an N-terminal cysteine-rich region. In addition
to PH, Tec also contains the Tec homology (TH) domain
with proline-rich and zinc-binding regions. Tec kinases
are expressed mainly by haematopoietic cells. Tec is
more widely-expressed than other Tec subfamily kinases.
It is found in endothelial cells, both B- and T-cells,
and a variety of myeloid cells including mast cells,
erythroid cells, platelets, macrophages and neutrophils.
Rlk is expressed in T-cells and mast cell lines. Tec and
Rlk are both key components of T-cell receptor (TCR)
signaling. They are important in TCR-stimulated
proliferation, IL-2 production and phopholipase C-gamma1
activation.
Length = 256
Score = 39.8 bits (93), Expect = 7e-05
Identities = 20/51 (39%), Positives = 28/51 (54%), Gaps = 4/51 (7%)
Query: 60 EIVESVRKGEKCLRPSLSELTCEEEVTAIMKRCWNEDPSERPDFTTLKAAI 110
E+VE + +G + RP L+ +T V +M CW+E P RP F L AI
Sbjct: 209 EVVEMISRGFRLYRPKLASMT----VYEVMYSCWHEKPEGRPTFAELLRAI 255
Score = 38.3 bits (89), Expect = 3e-04
Identities = 17/44 (38%), Positives = 25/44 (56%), Gaps = 4/44 (9%)
Query: 14 EIVESVRKGEKCLRPNLSELTCEEEVTAIMKRCWNEDPSERPDF 57
E+VE + +G + RP L+ +T V +M CW+E P RP F
Sbjct: 209 EVVEMISRGFRLYRPKLASMT----VYEVMYSCWHEKPEGRPTF 248
>gnl|CDD|133205 cd05074, PTKc_Tyro3, Catalytic domain of the Protein Tyrosine
Kinase, Tyro3. Protein Tyrosine Kinase (PTK) family;
Tyro3; catalytic (c) domain. The PTKc family is part of
a larger superfamily that includes the catalytic domains
of other kinases such as protein serine/threonine
kinases, RIO kinases, and phosphoinositide 3-kinase
(PI3K). PTKs catalyze the transfer of the
gamma-phosphoryl group from ATP to tyrosine (tyr)
residues in protein substrates. Tyro3 (or Sky) is a
member of the Axl subfamily, which is composed of
receptor tyr kinases (RTKs) containing an extracellular
ligand-binding region with two immunoglobulin-like
domains followed by two fibronectin type III repeats, a
transmembrane segment, and an intracellular catalytic
domain. Binding to their ligands, Gas6 and protein S,
leads to receptor dimerization, autophosphorylation,
activation, and intracellular signaling. Tyro3 is
predominantly expressed in the central nervous system
and the brain, and functions as a neurotrophic factor.
It is also expressed in osteoclasts and has a role in
bone resorption.
Length = 273
Score = 39.9 bits (93), Expect = 9e-05
Identities = 16/49 (32%), Positives = 26/49 (53%), Gaps = 4/49 (8%)
Query: 59 TEIVESVRKGEKCLRPSLSELTCEEEVTAIMKRCWNEDPSERPDFTTLK 107
+EI + KG + +P C E+V +M +CW+ +P RP F L+
Sbjct: 222 SEIYNYLIKGNRLKQP----PDCLEDVYELMCQCWSPEPKCRPSFQHLR 266
Score = 37.2 bits (86), Expect = 7e-04
Identities = 15/45 (33%), Positives = 23/45 (51%), Gaps = 4/45 (8%)
Query: 14 EIVESVRKGEKCLRPNLSELTCEEEVTAIMKRCWNEDPSERPDFT 58
EI + KG + +P C E+V +M +CW+ +P RP F
Sbjct: 223 EIYNYLIKGNRLKQP----PDCLEDVYELMCQCWSPEPKCRPSFQ 263
>gnl|CDD|133186 cd05055, PTKc_PDGFR, Catalytic domain of the Protein Tyrosine
Kinases, Platelet Derived Growth Factor Receptors.
Protein Tyrosine Kinase (PTK) family; Platelet Derived
Growth Factor Receptor (PDGFR) subfamily; catalytic (c)
domain. The PDGFR subfamily consists of PDGFR alpha,
PDGFR beta, KIT, CSF-1R, the mammalian FLT3, and similar
proteins. The PTKc family is part of a larger
superfamily that includes the catalytic domains of other
kinases such as protein serine/threonine kinases, RIO
kinases, and phosphoinositide 3-kinase (PI3K). PTKs
catalyze the transfer of the gamma-phosphoryl group from
ATP to tyrosine (tyr) residues in protein substrates.
PDGFR subfamily members are receptor tyr kinases (RTKs)
containing an extracellular ligand-binding region with
five immunoglobulin-like domains, a transmembrane
segment, and an intracellular catalytic domain. PDGFR
kinase domains are autoinhibited by their juxtamembrane
regions containing tyr residues. The binding to their
ligands leads to receptor dimerization, trans
phosphorylation and activation, and intracellular
signaling. PDGFR subfamily receptors are important in
the development of a variety of cells. PDGFRs are
expressed in a many cells including fibroblasts,
neurons, endometrial cells, mammary epithelial cells,
and vascular smooth muscle cells. PDGFR signaling is
critical in normal embryonic development, angiogenesis,
and wound healing. PDGFRs transduce mitogenic signals
for connective tissue cells and are important for cell
shape and motility. Kit is important in the development
of melanocytes, germ cells, mast cells, hematopoietic
stem cells, the interstitial cells of Cajal, and the
pacemaker cells of the GI tract. CSF-1R signaling is
critical in the regulation of macrophages and
osteoclasts. Mammalian FLT3 plays an important role in
the survival, proliferation, and differentiation of stem
cells.
Length = 302
Score = 39.8 bits (93), Expect = 9e-05
Identities = 13/31 (41%), Positives = 17/31 (54%)
Query: 83 EEVTAIMKRCWNEDPSERPDFTTLKAAIRKL 113
E+ IMK CW+ DP +RP F + I K
Sbjct: 271 AEIYDIMKTCWDADPLKRPTFKQIVQLIGKQ 301
Score = 39.0 bits (91), Expect = 1e-04
Identities = 11/21 (52%), Positives = 14/21 (66%)
Query: 37 EEVTAIMKRCWNEDPSERPDF 57
E+ IMK CW+ DP +RP F
Sbjct: 271 AEIYDIMKTCWDADPLKRPTF 291
>gnl|CDD|173628 cd05038, PTKc_Jak_rpt2, Catalytic (repeat 2) domain of the Protein
Tyrosine Kinases, Janus kinases. Protein Tyrosine
Kinase (PTK) family; Janus kinase (Jak) subfamily;
catalytic (c) domain (repeat 2). The Jak subfamily is
composed of Jak1, Jak2, Jak3, TYK2, and similar
proteins. The PTKc family is part of a larger
superfamily that includes the catalytic domains of other
kinases such as protein serine/threonine kinases, RIO
kinases, and phosphoinositide 3-kinase (PI3K). PTKs
catalyze the transfer of the gamma-phosphoryl group from
ATP to tyrosine (tyr) residues in protein substrates.
Jak subfamily proteins are cytoplasmic (or nonreceptor)
tyr kinases containing an N-terminal FERM domain,
followed by a Src homology 2 (SH2) domain, a
pseudokinase domain, and a C-terminal tyr kinase
catalytic domain. Most Jaks are expressed in a wide
variety of tissues, except for Jak3, which is expressed
only in hematopoietic cells. Jaks are crucial for
cytokine receptor signaling. They are activated by
autophosphorylation upon cytokine-induced receptor
aggregation, and subsequently trigger downstream
signaling events such as the phosphorylation of signal
transducers and activators of transcription (STATs).
Jaks are also involved in regulating the surface
expression of some cytokine receptors. The Jak-STAT
pathway is involved in many biological processes
including hematopoiesis, immunoregulation, host defense,
fertility, lactation, growth, and embryogenesis.
Length = 284
Score = 39.7 bits (93), Expect = 9e-05
Identities = 18/48 (37%), Positives = 29/48 (60%), Gaps = 4/48 (8%)
Query: 59 TEIVESVRKGEKCLRPSLSELTCEEEVTAIMKRCWNEDPSERPDFTTL 106
T ++E +++GE+ RP +C +EV +MK CW +P +RP F L
Sbjct: 233 TRLLELLKEGERLPRPP----SCPDEVYDLMKLCWEAEPQDRPSFADL 276
Score = 36.6 bits (85), Expect = 0.001
Identities = 19/54 (35%), Positives = 32/54 (59%), Gaps = 6/54 (11%)
Query: 15 IVESVRKGEKCLRPNLSELTCEEEVTAIMKRCWNEDPSERPDFTT--EIVESVR 66
++E +++GE+ RP +C +EV +MK CW +P +RP F IV+ +R
Sbjct: 235 LLELLKEGERLPRPP----SCPDEVYDLMKLCWEAEPQDRPSFADLILIVDRLR 284
>gnl|CDD|173645 cd05084, PTKc_Fes, Catalytic domain of the Protein Tyrosine Kinase,
Fes. Protein Tyrosine Kinase (PTK) family; Fes (or Fps)
kinase subfamily; catalytic (c) domain. The PTKc family
is part of a larger superfamily that includes the
catalytic domains of other kinases such as protein
serine/threonine kinases, RIO kinases, and
phosphoinositide 3-kinase (PI3K). PTKs catalyze the
transfer of the gamma-phosphoryl group from ATP to
tyrosine (tyr) residues in protein substrates. Fes
subfamily proteins are cytoplasmic (or nonreceptor) tyr
kinases containing an N-terminal region with FCH
(Fes/Fer/CIP4 homology) and coiled-coil domains,
followed by a SH2 domain, and a C-terminal catalytic
domain. The genes for Fes (feline sarcoma) and Fps
(Fujinami poultry sarcoma) were first isolated from
tumor-causing retroviruses. The viral oncogenes encode
chimeric Fes proteins consisting of Gag sequences at the
N-termini, resulting in unregulated tyr kinase activity.
Fes kinase is expressed in myeloid, vascular
endothelial, epithelial, and neuronal cells. It plays
important roles in cell growth and differentiation,
angiogenesis, inflammation and immunity, and
cytoskeletal regulation. A recent study implicates Fes
kinase as a tumor suppressor in colorectal cancer.
Length = 252
Score = 39.2 bits (91), Expect = 1e-04
Identities = 16/44 (36%), Positives = 26/44 (59%), Gaps = 4/44 (9%)
Query: 63 ESVRKGEKCLRPSLSELTCEEEVTAIMKRCWNEDPSERPDFTTL 106
E++ +G + P L C + V +M+RCW DP +RP F+T+
Sbjct: 207 EAIEQGVRLPCPEL----CPDAVYRLMERCWEYDPGQRPSFSTV 246
Score = 39.2 bits (91), Expect = 1e-04
Identities = 16/43 (37%), Positives = 25/43 (58%), Gaps = 4/43 (9%)
Query: 17 ESVRKGEKCLRPNLSELTCEEEVTAIMKRCWNEDPSERPDFTT 59
E++ +G + P L C + V +M+RCW DP +RP F+T
Sbjct: 207 EAIEQGVRLPCPEL----CPDAVYRLMERCWEYDPGQRPSFST 245
>gnl|CDD|133179 cd05048, PTKc_Ror, Catalytic Domain of the Protein Tyrosine
Kinases, Receptor tyrosine kinase-like Orphan Receptors.
Protein Tyrosine Kinase (PTK) family; Receptor tyrosine
kinase-like Orphan Receptor (Ror) subfamily; catalytic
(c) domain. The Ror subfamily consists of Ror1, Ror2,
and similar proteins. The PTKc family is part of a
larger superfamily that includes the catalytic domains
of other kinases such as protein serine/threonine
kinases, RIO kinases, and phosphoinositide 3-kinase
(PI3K). PTKs catalyze the transfer of the
gamma-phosphoryl group from ATP to tyrosine (tyr)
residues in protein substrates. Ror proteins are orphan
receptor tyr kinases (RTKs) containing an extracellular
region with immunoglobulin-like, cysteine-rich, and
kringle domains, a transmembrane segment, and an
intracellular catalytic domain. Ror RTKs are unrelated
to the nuclear receptor subfamily called
retinoid-related orphan receptors (RORs). RTKs are
usually activated through ligand binding, which causes
dimerization and autophosphorylation of the
intracellular tyr kinase catalytic domain. Ror kinases
are expressed in many tissues during development. They
play important roles in bone and heart formation.
Mutations in human Ror2 result in two different bone
development genetic disorders, recessive Robinow
syndrome and brachydactyly type B. Drosophila Ror is
expressed only in the developing nervous system during
neurite outgrowth and neuronal differentiation,
suggesting a role for Drosophila Ror in neural
development. More recently, mouse Ror1 and Ror2 have
also been found to play an important role in regulating
neurite growth in central neurons. Ror1 and Ror2 are
believed to have some overlapping and redundant
functions.
Length = 283
Score = 39.4 bits (92), Expect = 1e-04
Identities = 18/54 (33%), Positives = 27/54 (50%), Gaps = 4/54 (7%)
Query: 60 EIVESVRKGEKCLRPSLSELTCEEEVTAIMKRCWNEDPSERPDFTTLKAAIRKL 113
E++E +R + L P + C V A+M CWNE P+ RP F + +R
Sbjct: 234 EVIEMIR--SRQLLPCPED--CPARVYALMIECWNEIPARRPRFKDIHTRLRSW 283
Score = 36.3 bits (84), Expect = 0.001
Identities = 17/46 (36%), Positives = 24/46 (52%), Gaps = 4/46 (8%)
Query: 14 EIVESVRKGEKCLRPNLSELTCEEEVTAIMKRCWNEDPSERPDFTT 59
E++E +R + L P + C V A+M CWNE P+ RP F
Sbjct: 234 EVIEMIR--SRQLLPCPED--CPARVYALMIECWNEIPARRPRFKD 275
>gnl|CDD|133243 cd05112, PTKc_Itk, Catalytic domain of the Protein Tyrosine Kinase,
Interleukin-2-inducible T-cell Kinase. Protein Tyrosine
Kinase (PTK) family; Interleukin-2 (IL-2)-inducible
T-cell kinase (Itk); catalytic (c) domain. The PTKc
family is part of a larger superfamily that includes the
catalytic domains of other kinases such as protein
serine/threonine kinases, RIO kinases, and
phosphoinositide 3-kinase (PI3K). PTKs catalyze the
transfer of the gamma-phosphoryl group from ATP to
tyrosine (tyr) residues in protein substrates. Itk (also
known as Tsk or Emt) is a member of the Tec subfamily of
proteins, which are cytoplasmic (or nonreceptor) tyr
kinases with similarity to Src kinases in that they
contain Src homology protein interaction domains (SH3,
SH2) N-terminal to the catalytic tyr kinase domain.
Unlike Src kinases, most Tec subfamily members (except
Rlk) also contain an N-terminal pleckstrin homology (PH)
domain, which binds the products of PI3K and allows
membrane recruitment and activation. In addition, Itk
contains the Tec homology (TH) domain containing one
proline-rich region and a zinc-binding region. Tec
kinases are expressed mainly by haematopoietic cells.
Itk is expressed in T-cells and mast cells, and is
important in their development and differentiation. Of
the three Tec kinases expressed in T-cells, Itk plays
the predominant role in T-cell receptor (TCR) signaling.
It is activated by phosphorylation upon TCR crosslinking
and is involved in the pathway resulting in
phospholipase C-gamma1 activation and actin
polymerization. It also plays a role in the downstream
signaling of the T-cell costimulatory receptor CD28, the
T-cell surface receptor CD2, and the chemokine receptor
CXCR4. In addition, Itk is crucial for the development
of T-helper(Th)2 effector responses.
Length = 256
Score = 39.2 bits (91), Expect = 1e-04
Identities = 16/48 (33%), Positives = 27/48 (56%), Gaps = 4/48 (8%)
Query: 59 TEIVESVRKGEKCLRPSLSELTCEEEVTAIMKRCWNEDPSERPDFTTL 106
+E+VE++ G + +P L + V +M+ CW E P +RP F+ L
Sbjct: 208 SEVVETINAGFRLYKPRL----ASQSVYELMQHCWKERPEDRPSFSLL 251
Score = 38.0 bits (88), Expect = 3e-04
Identities = 15/45 (33%), Positives = 25/45 (55%), Gaps = 4/45 (8%)
Query: 14 EIVESVRKGEKCLRPNLSELTCEEEVTAIMKRCWNEDPSERPDFT 58
E+VE++ G + +P L + V +M+ CW E P +RP F+
Sbjct: 209 EVVETINAGFRLYKPRL----ASQSVYELMQHCWKERPEDRPSFS 249
>gnl|CDD|133181 cd05050, PTKc_Musk, Catalytic domain of the Protein Tyrosine
Kinase, Muscle-specific kinase. Protein Tyrosine Kinase
(PTK) family; Muscle-specific kinase (Musk); catalytic
(c) domain. The PTKc family is part of a larger
superfamily that includes the catalytic domains of other
kinases such as protein serine/threonine kinases, RIO
kinases, and phosphoinositide 3-kinase (PI3K). PTKs
catalyze the transfer of the gamma-phosphoryl group from
ATP to tyrosine (tyr) residues in protein substrates.
Musk is a receptor tyr kinase (RTK) containing an
extracellular region with four immunoglobulin-like
domains and a cysteine-rich cluster, a transmembrane
segment, and an intracellular catalytic domain. Musk is
expressed and concentrated in the postsynaptic membrane
in skeletal muscle. It is essential for the
establishment of the neuromuscular junction (NMJ), a
peripheral synapse that conveys signals from motor
neurons to muscle cells. Agrin, a large proteoglycan
released from motor neurons, stimulates Musk
autophosphorylation and activation, leading to the
clustering of acetylcholine receptors (AChRs). To date,
there is no evidence to suggest that agrin binds
directly to Musk. Mutations in AChR, Musk and other
partners are responsible for diseases of the NMJ, such
as the autoimmune syndrome myasthenia gravis.
Length = 288
Score = 39.0 bits (91), Expect = 1e-04
Identities = 15/53 (28%), Positives = 28/53 (52%), Gaps = 4/53 (7%)
Query: 60 EIVESVRKGEKCLRPSLSELTCEEEVTAIMKRCWNEDPSERPDFTTLKAAIRK 112
E++ VR G P C E+ +M+ CW++ PS+RP F ++ +++
Sbjct: 240 EVIYYVRDGNVLSCPD----NCPLELYNLMRLCWSKLPSDRPSFASINRILQR 288
Score = 38.7 bits (90), Expect = 2e-04
Identities = 15/45 (33%), Positives = 25/45 (55%), Gaps = 4/45 (8%)
Query: 13 DEIVESVRKGEKCLRPNLSELTCEEEVTAIMKRCWNEDPSERPDF 57
+E++ VR G P+ C E+ +M+ CW++ PS+RP F
Sbjct: 239 EEVIYYVRDGNVLSCPD----NCPLELYNLMRLCWSKLPSDRPSF 279
>gnl|CDD|133237 cd05106, PTKc_CSF-1R, Catalytic domain of the Protein Tyrosine
Kinase, Colony-Stimulating Factor-1 Receptor. Protein
Tyrosine Kinase (PTK) family; Colony-Stimulating
Factor-1 Receptor (CSF-1R); catalytic (c) domain. The
PTKc family is part of a larger superfamily that
includes the catalytic domains of other kinases such as
protein serine/threonine kinases, RIO kinases, and
phosphoinositide 3-kinase (PI3K). PTKs catalyze the
transfer of the gamma-phosphoryl group from ATP to
tyrosine (tyr) residues in protein substrates. CSF-1R,
also called c-Fms, is a member of the Platelet Derived
Growth Factor Receptor (PDGFR) subfamily of proteins,
which are receptor tyr kinases (RTKs) containing an
extracellular ligand-binding region with five
immunoglobulin-like domains, a transmembrane segment,
and an intracellular catalytic domain. The binding of
CSF-1R to its ligand, CSF-1, leads to receptor
dimerization, trans phosphorylation and activation, and
intracellular signaling. CSF-1R signaling is critical in
the regulation of macrophages and osteoclasts. It leads
to increases in gene transcription and protein
translation, and induces cytoskeletal remodeling. CSF-1R
signaling leads to a variety of cellular responses
including survival, proliferation, and differentiation
of target cells. It plays an important role in innate
immunity, tissue development and function, and the
pathogenesis of some diseases including atherosclerosis
and cancer. CSF-1R signaling is also implicated in
mammary gland development during pregnancy and
lactation. Aberrant CSF-1/CSF-1R expression correlates
with tumor cell invasiveness, poor clinical prognosis,
and bone metastasis in breast cancer. Although the
structure of the human CSF-1R catalytic domain is known,
it is excluded from this specific alignment model
because it contains a deletion in its sequence.
Length = 374
Score = 39.1 bits (91), Expect = 2e-04
Identities = 17/49 (34%), Positives = 29/49 (59%), Gaps = 4/49 (8%)
Query: 65 VRKGEKCLRPSLSELTCEEEVTAIMKRCWNEDPSERPDFTTLKAAIRKL 113
V++G + RP + E+ +IMK CWN +P+ERP F+ + I++
Sbjct: 328 VKRGYQMSRPDFAPP----EIYSIMKMCWNLEPTERPTFSQISQLIQRQ 372
Score = 37.5 bits (87), Expect = 6e-04
Identities = 16/39 (41%), Positives = 25/39 (64%), Gaps = 4/39 (10%)
Query: 19 VRKGEKCLRPNLSELTCEEEVTAIMKRCWNEDPSERPDF 57
V++G + RP+ + E+ +IMK CWN +P+ERP F
Sbjct: 328 VKRGYQMSRPDFAPP----EIYSIMKMCWNLEPTERPTF 362
>gnl|CDD|133220 cd05089, PTKc_Tie1, Catalytic domain of the Protein Tyrosine
Kinase, Tie1. Protein Tyrosine Kinase (PTK) family;
Tie1; catalytic (c) domain. The PTKc family is part of a
larger superfamily that includes the catalytic domains
of other kinases such as protein serine/threonine
kinases, RIO kinases, and phosphoinositide 3-kinase
(PI3K). PTKs catalyze the transfer of the
gamma-phosphoryl group from ATP to tyrosine (tyr)
residues in protein substrates. Tie1 is a receptor tyr
kinase (RTK) containing an extracellular region, a
transmembrane segment, and an intracellular catalytic
domain. The extracellular region contains an
immunoglobulin (Ig)-like domain, three epidermal growth
factor (EGF)-like domains, a second Ig-like domain, and
three fibronectin type III repeats. Tie receptors are
specifically expressed in endothelial cells and
hematopoietic stem cells. No specific ligand has been
identified for Tie1, although the angiopoietin, Ang-1,
binds to Tie1 through integrins at high concentrations.
In vivo studies of Tie1 show that it is critical in
vascular development.
Length = 297
Score = 38.8 bits (90), Expect = 2e-04
Identities = 15/54 (27%), Positives = 30/54 (55%), Gaps = 4/54 (7%)
Query: 60 EIVESVRKGEKCLRPSLSELTCEEEVTAIMKRCWNEDPSERPDFTTLKAAIRKL 113
E+ E + +G + +P C++EV +M++CW + P ERP F + + ++
Sbjct: 226 ELYEKLPQGYRMEKPR----NCDDEVYELMRQCWRDRPYERPPFAQISVQLSRM 275
Score = 38.1 bits (88), Expect = 4e-04
Identities = 18/56 (32%), Positives = 30/56 (53%), Gaps = 4/56 (7%)
Query: 14 EIVESVRKGEKCLRPNLSELTCEEEVTAIMKRCWNEDPSERPDFTTEIVESVRKGE 69
E+ E + +G + +P C++EV +M++CW + P ERP F V+ R E
Sbjct: 226 ELYEKLPQGYRMEKPR----NCDDEVYELMRQCWRDRPYERPPFAQISVQLSRMLE 277
>gnl|CDD|173631 cd05045, PTKc_RET, Catalytic domain of the Protein Tyrosine Kinase,
REarranged during Transfection protein. Protein
Tyrosine Kinase (PTK) family; RET (REarranged during
Transfection) protein; catalytic (c) domain. The PTKc
family is part of a larger superfamily that includes the
catalytic domains of other kinases such as protein
serine/threonine kinases, RIO kinases, and
phosphoinositide 3-kinase (PI3K). PTKs catalyze the
transfer of the gamma-phosphoryl group from ATP to
tyrosine (tyr) residues in protein substrates. RET is a
receptor tyr kinase (RTK) containing an extracellular
region with four cadherin-like repeats, a
calcium-binding site, and a cysteine-rich domain, a
transmembrane segment, and an intracellular catalytic
domain. It is part of a multisubunit complex that binds
glial-derived neurotropic factor (GDNF) family ligands
(GFLs) including GDNF, neurturin, artemin, and
persephin. GFLs bind RET along with four GPI-anchored
coreceptors, bringing two RET molecules together,
leading to autophosphorylation, activation, and
intracellular signaling. RET is essential for the
development of the sympathetic, parasympathetic and
enteric nervous systems, and the kidney. RET disruption
by germline mutations causes diseases in humans
including congenital aganglionosis of the
gastrointestinal tract (Hirschsprung's disease) and
three related inherited cancers: multiple endocrine
neoplasia type 2A (MEN2A), MEN2B, and familial medullary
thyroid carcinoma (FMTC).
Length = 290
Score = 38.8 bits (90), Expect = 2e-04
Identities = 14/49 (28%), Positives = 25/49 (51%), Gaps = 4/49 (8%)
Query: 65 VRKGEKCLRPSLSELTCEEEVTAIMKRCWNEDPSERPDFTTLKAAIRKL 113
++ G + RP C EE+ +M CW ++P +RP F + + K+
Sbjct: 242 LKTGYRMERPE----NCSEEMYNLMLTCWKQEPDKRPTFADISKELEKM 286
Score = 36.1 bits (83), Expect = 0.002
Identities = 13/39 (33%), Positives = 21/39 (53%), Gaps = 4/39 (10%)
Query: 19 VRKGEKCLRPNLSELTCEEEVTAIMKRCWNEDPSERPDF 57
++ G + RP C EE+ +M CW ++P +RP F
Sbjct: 242 LKTGYRMERPE----NCSEEMYNLMLTCWKQEPDKRPTF 276
>gnl|CDD|133248 cd05148, PTKc_Srm_Brk, Catalytic domain of the Protein Tyrosine
Kinases, Srm and Brk. Protein Tyrosine Kinase (PTK)
family; Src-related kinase lacking C-terminal regulatory
tyrosine and N-terminal myristylation sites (Srm) and
breast tumor kinase (Brk, also called protein tyrosine
kinase 6); catalytic (c) domains. The PTKc family is
part of a larger superfamily that includes the catalytic
domains of other kinases such as protein
serine/threonine kinases, RIO kinases, and
phosphoinositide 3-kinase (PI3K). PTKs catalyze the
transfer of the gamma-phosphoryl group from ATP to
tyrosine (tyr) residues in protein substrates. Srm and
Brk are a member of the Src subfamily of proteins, which
are cytoplasmic (or non-receptor) tyr kinases. Src
kinases in general contain an N-terminal SH4 domain with
a myristoylation site, followed by SH3 and SH2 domains,
a tyr kinase domain, and a regulatory C-terminal region
containing a conserved tyr; they are activated by
autophosphorylation at the tyr kinase domain, but are
negatively regulated by phosphorylation at the
C-terminal tyr by Csk (C-terminal Src Kinase). Srm and
Brk however, lack the N-terminal myristylation sites.
Src proteins are involved in signaling pathways that
regulate cytokine and growth factor responses,
cytoskeleton dynamics, cell proliferation, survival, and
differentiation. Brk has been found to be overexpressed
in a majority of breast tumors.
Length = 261
Score = 38.6 bits (90), Expect = 2e-04
Identities = 14/48 (29%), Positives = 24/48 (50%), Gaps = 4/48 (8%)
Query: 60 EIVESVRKGEKCLRPSLSELTCEEEVTAIMKRCWNEDPSERPDFTTLK 107
E+ + + G + P+ C +E+ IM CW +P +RP F L+
Sbjct: 212 EVYDQITAGYRMPCPA----KCPQEIYKIMLECWAAEPEDRPSFKALR 255
Score = 34.7 bits (80), Expect = 0.005
Identities = 13/46 (28%), Positives = 21/46 (45%), Gaps = 4/46 (8%)
Query: 14 EIVESVRKGEKCLRPNLSELTCEEEVTAIMKRCWNEDPSERPDFTT 59
E+ + + G + P C +E+ IM CW +P +RP F
Sbjct: 212 EVYDQITAGYRMPCP----AKCPQEIYKIMLECWAAEPEDRPSFKA 253
>gnl|CDD|133221 cd05090, PTKc_Ror1, Catalytic domain of the Protein Tyrosine
Kinase, Receptor tyrosine kinase-like Orphan Receptor 1.
Protein Tyrosine Kinase (PTK) family; Receptor tyrosine
kinase-like Orphan Receptor 1 (Ror1); catalytic (c)
domain. The PTKc family is part of a larger superfamily
that includes the catalytic domains of other kinases
such as protein serine/threonine kinases, RIO kinases,
and phosphoinositide 3-kinase (PI3K). PTKs catalyze the
transfer of the gamma-phosphoryl group from ATP to
tyrosine (tyr) residues in protein substrates. Ror
proteins are orphan receptor tyr kinases (RTKs)
containing an extracellular region with
immunoglobulin-like, cysteine-rich, and kringle domains,
a transmembrane segment, and an intracellular catalytic
domain. Ror RTKs are unrelated to the nuclear receptor
subfamily called retinoid-related orphan receptors
(RORs). RTKs are usually activated through ligand
binding, which causes dimerization and
autophosphorylation of the intracellular tyr kinase
catalytic domain. Ror kinases are expressed in many
tissues during development. Avian Ror1 was found to be
involved in late limb development. Studies in mice
reveal that Ror1 is important in the regulation of
neurite growth in central neurons, as well as in
respiratory development. Loss of Ror1 also enhances the
heart and skeletal abnormalities found in Ror2-deficient
mice.
Length = 283
Score = 38.1 bits (88), Expect = 3e-04
Identities = 18/52 (34%), Positives = 27/52 (51%), Gaps = 4/52 (7%)
Query: 60 EIVESVRKGEKCLRPSLSELTCEEEVTAIMKRCWNEDPSERPDFTTLKAAIR 111
E++E VRK + L P + C + ++M CW E PS RP F + +R
Sbjct: 234 EVIEMVRKRQ--LLPCSED--CPPRMYSLMTECWQEGPSRRPRFKDIHTRLR 281
Score = 35.8 bits (82), Expect = 0.002
Identities = 17/44 (38%), Positives = 24/44 (54%), Gaps = 4/44 (9%)
Query: 14 EIVESVRKGEKCLRPNLSELTCEEEVTAIMKRCWNEDPSERPDF 57
E++E VRK + L P + C + ++M CW E PS RP F
Sbjct: 234 EVIEMVRKRQ--LLPCSED--CPPRMYSLMTECWQEGPSRRPRF 273
>gnl|CDD|133230 cd05099, PTKc_FGFR4, Catalytic domain of the Protein Tyrosine
Kinase, Fibroblast Growth Factor Receptor 4. Protein
Tyrosine Kinase (PTK) family; Fibroblast Growth Factor
Receptor 4 (FGFR4); catalytic (c) domain. The PTKc
family is part of a larger superfamily that includes the
catalytic domains of other kinases such as protein
serine/threonine kinases, RIO kinases, and
phosphoinositide 3-kinase (PI3K). PTKs catalyze the
transfer of the gamma-phosphoryl group from ATP to
tyrosine (tyr) residues in protein substrates. FGFR4 is
part of the FGFR subfamily, which are receptor tyr
kinases (RTKs) containing an extracellular
ligand-binding region with three immunoglobulin-like
domains, a transmembrane segment, and an intracellular
catalytic domain. The binding of FGFRs to their ligands,
the FGFs, results in receptor dimerization and
activation, and intracellular signaling. The binding of
FGFs to FGFRs is promiscuous, in that a receptor may be
activated by several ligands and a ligand may bind to
more that one type of receptor. Unlike other FGFRs,
there is only one splice form of FGFR4. It binds FGF1,
FGF2, FGF6, FGF19, and FGF23. FGF19 is a selective
ligand for FGFR4. Although disruption of FGFR4 in mice
causes no obvious phenotype, in vivo inhibition of FGFR4
in cultured skeletal muscle cells resulted in an arrest
of muscle progenitor differentiation. FGF6 and FGFR4 are
uniquely expressed in myofibers and satellite cells.
FGF6/FGFR4 signaling appears to play a key role in the
regulation of muscle regeneration. A polymorphism in
FGFR4 is found in head and neck squamous cell carcinoma.
Length = 314
Score = 38.0 bits (88), Expect = 4e-04
Identities = 17/54 (31%), Positives = 31/54 (57%), Gaps = 4/54 (7%)
Query: 60 EIVESVRKGEKCLRPSLSELTCEEEVTAIMKRCWNEDPSERPDFTTLKAAIRKL 113
E+ + +R+G + +PS C E+ +M+ CW+ P++RP F L A+ K+
Sbjct: 244 ELFKLLREGHRMDKPS----NCTHELYMLMRECWHAVPTQRPTFKQLVEALDKV 293
Score = 34.6 bits (79), Expect = 0.006
Identities = 16/55 (29%), Positives = 34/55 (61%), Gaps = 5/55 (9%)
Query: 13 DEIVESVRKGEKCLRPNLSELTCEEEVTAIMKRCWNEDPSERPDFTTEIVESVRK 67
+E+ + +R+G + +P+ C E+ +M+ CW+ P++RP F ++VE++ K
Sbjct: 243 EELFKLLREGHRMDKPS----NCTHELYMLMRECWHAVPTQRPTF-KQLVEALDK 292
>gnl|CDD|173642 cd05075, PTKc_Axl, Catalytic domain of the Protein Tyrosine Kinase,
Axl. Protein Tyrosine Kinase (PTK) family; Axl;
catalytic (c) domain. The PTKc family is part of a
larger superfamily that includes the catalytic domains
of other kinases such as protein serine/threonine
kinases, RIO kinases, and phosphoinositide 3-kinase
(PI3K). PTKs catalyze the transfer of the
gamma-phosphoryl group from ATP to tyrosine (tyr)
residues in protein substrates. Axl is a member of the
Axl subfamily, which is composed of receptor tyr kinases
(RTKs) containing an extracellular ligand-binding region
with two immunoglobulin-like domains followed by two
fibronectin type III repeats, a transmembrane segment,
and an intracellular catalytic domain. Binding to their
ligands, Gas6 and protein S, leads to receptor
dimerization, autophosphorylation, activation, and
intracellular signaling. Axl is widely expressed in a
variety of organs and cells including epithelial,
mesenchymal, hematopoietic, as well as non-transformed
cells. Axl signaling is important in many cellular
functions such as survival, anti-apoptosis,
proliferation, migration, and adhesion. Axl was
originally isolated from patients with chronic
myelogenous leukemia and a chronic myeloproliferative
disorder. Axl is overexpressed in many human cancers
including colon, squamous cell, thyroid, breast, and
lung carcinomas.
Length = 272
Score = 38.1 bits (88), Expect = 4e-04
Identities = 16/54 (29%), Positives = 30/54 (55%), Gaps = 4/54 (7%)
Query: 59 TEIVESVRKGEKCLRPSLSELTCEEEVTAIMKRCWNEDPSERPDFTTLKAAIRK 112
+EI + +R+G + +P C + + ++M CW +P +RP F TL+ + K
Sbjct: 221 SEIYDYLRQGNRLKQPP----DCLDGLYSLMSSCWLLNPKDRPSFETLRCELEK 270
Score = 33.5 bits (76), Expect = 0.013
Identities = 14/46 (30%), Positives = 25/46 (54%), Gaps = 4/46 (8%)
Query: 14 EIVESVRKGEKCLRPNLSELTCEEEVTAIMKRCWNEDPSERPDFTT 59
EI + +R+G + +P C + + ++M CW +P +RP F T
Sbjct: 222 EIYDYLRQGNRLKQPP----DCLDGLYSLMSSCWLLNPKDRPSFET 263
>gnl|CDD|133211 cd05080, PTKc_Tyk2_rpt2, Catalytic (repeat 2) domain of the Protein
Tyrosine Kinase, Tyrosine kinase 2. Protein Tyrosine
Kinase (PTK) family; Tyrosine kinase 2 (Tyk2); catalytic
(c) domain (repeat 2). The PTKc family is part of a
larger superfamily that includes the catalytic domains
of other kinases such as protein serine/threonine
kinases, RIO kinases, and phosphoinositide 3-kinase
(PI3K). PTKs catalyze the transfer of the
gamma-phosphoryl group from ATP to tyrosine (tyr)
residues in protein substrates. Tyk2 is a member of the
Janus kinase (Jak) subfamily of proteins, which are
cytoplasmic (or nonreceptor) tyr kinases containing an
N-terminal FERM domain, followed by a Src homology 2
(SH2) domain, a pseudokinase domain, and a C-terminal
tyr kinase catalytic domain. Jaks are crucial for
cytokine receptor signaling. They are activated by
autophosphorylation upon cytokine-induced receptor
aggregation, and subsequently trigger downstream
signaling events such as the phosphorylation of signal
transducers and activators of transcription (STATs).
Tyk2 is widely expressed in many tissues. It is involved
in signaling via the cytokine receptors IFN-alphabeta,
IL-6, IL-10, IL-12, IL-13, and IL-23. It mediates cell
surface urokinase receptor (uPAR) signaling and plays a
role in modulating vascular smooth muscle cell (VSMC)
functional behavior in response to injury. Tyk2 is also
important in dendritic cell function and T helper (Th)1
cell differentiation. A homozygous mutation of Tyk2 was
found in a patient with hyper-IgE syndrome (HIES), a
primary immunodeficiency characterized by recurrent skin
abscesses, pneumonia, and elevated serum IgE. This
suggests that Tyk2 may play important roles in multiple
cytokine signaling involved in innate and adaptive
immunity.
Length = 283
Score = 38.0 bits (88), Expect = 4e-04
Identities = 14/47 (29%), Positives = 23/47 (48%), Gaps = 4/47 (8%)
Query: 15 IVESVRKGEKCLRPNLSELTCEEEVTAIMKRCWNEDPSERPDFTTEI 61
++E + +G + P C +EV +MK CW + RP F + I
Sbjct: 233 LIELLERGMRLPCPK----NCPQEVYILMKNCWETEAKFRPTFRSLI 275
Score = 37.2 bits (86), Expect = 6e-04
Identities = 14/46 (30%), Positives = 23/46 (50%), Gaps = 4/46 (8%)
Query: 61 IVESVRKGEKCLRPSLSELTCEEEVTAIMKRCWNEDPSERPDFTTL 106
++E + +G + P C +EV +MK CW + RP F +L
Sbjct: 233 LIELLERGMRLPCPK----NCPQEVYILMKNCWETEAKFRPTFRSL 274
>gnl|CDD|173630 cd05044, PTKc_c-ros, Catalytic domain of the Protein Tyrosine
Kinase, C-ros. Protein Tyrosine Kinases (PTK) family;
C-ros and Drosophila Sevenless proteins; catalytic (c)
domain. The PTKc family is part of a larger superfamily
that includes the catalytic domains of other kinases
such as protein serine/threonine kinases, RIO kinases,
and phosphoinositide 3-kinase (PI3K). PTKs catalyze the
transfer of the gamma-phosphoryl group from ATP to
tyrosine (tyr) residues in protein substrates. The
proto-oncogene c-ros encodes an orphan receptor tyr
kinase (RTK) with an unknown ligand. RTKs contain an
extracellular ligand-binding domain, a transmembrane
region, and an intracellular tyr kinase domain. RTKs are
usually activated through ligand binding, which causes
dimerization and autophosphorylation of the
intracellular tyr kinase catalytic domain. C-ros is
expressed in embryonic cells of the kidney, intestine
and lung, but disappears soon after birth. It persists
only in the adult epididymis. Male mice bearing inactive
mutations of c-ros lack the initial segment of the
epididymis and are infertile. The Drosophila protein,
Sevenless, is required for the specification of the R7
photoreceptor cell during eye development.
Length = 269
Score = 37.5 bits (87), Expect = 4e-04
Identities = 15/44 (34%), Positives = 25/44 (56%), Gaps = 4/44 (9%)
Query: 14 EIVESVRKGEKCLRPNLSELTCEEEVTAIMKRCWNEDPSERPDF 57
E+++ V G + +P C +++ +M CW +DPSERP F
Sbjct: 221 EVLQHVTAGGRLQKPE----NCPDKIYQLMTNCWAQDPSERPTF 260
Score = 36.4 bits (84), Expect = 0.001
Identities = 15/44 (34%), Positives = 25/44 (56%), Gaps = 4/44 (9%)
Query: 60 EIVESVRKGEKCLRPSLSELTCEEEVTAIMKRCWNEDPSERPDF 103
E+++ V G + +P C +++ +M CW +DPSERP F
Sbjct: 221 EVLQHVTAGGRLQKPE----NCPDKIYQLMTNCWAQDPSERPTF 260
>gnl|CDD|173625 cd05032, PTKc_InsR_like, Catalytic domain of Insulin Receptor-like
Protein Tyrosine Kinases. Protein Tyrosine Kinase (PTK)
family; Insulin Receptor (InsR) subfamily; catalytic (c)
domain. The PTKc family is part of a larger superfamily
that includes the catalytic domains of other kinases
such as protein serine/threonine kinases, RIO kinases,
and phosphoinositide 3-kinase (PI3K). The InsR subfamily
is composed of InsR, Insulin-like Growth Factor-1
Receptor (IGF-1R), and similar proteins. PTKs catalyze
the transfer of the gamma-phosphoryl group from ATP to
tyrosine (tyr) residues in protein substrates. InsR and
IGF-1R are receptor tyr kinases (RTKs) composed of two
alphabeta heterodimers. Binding of the ligand (insulin,
IGF-1, or IGF-2) to the extracellular alpha subunit
activates the intracellular tyr kinase domain of the
transmembrane beta subunit. Receptor activation leads to
autophosphorylation, stimulating downstream kinase
activities, which initiate signaling cascades and
biological function. InsR and IGF-1R, which share 84%
sequence identity in their kinase domains, display
physiologically distinct yet overlapping functions in
cell growth, differentiation, and metabolism. InsR
activation leads primarily to metabolic effects while
IGF-1R activation stimulates mitogenic pathways. In
cells expressing both receptors, InsR/IGF-1R hybrids are
found together with classical receptors. Both receptors
can interact with common adaptor molecules such as IRS-1
and IRS-2.
Length = 277
Score = 37.7 bits (88), Expect = 5e-04
Identities = 16/52 (30%), Positives = 26/52 (50%), Gaps = 5/52 (9%)
Query: 13 DEIVESVRKGEKCLRPNLSELTCEEEVTAIMKRCWNEDPSERPDFTTEIVES 64
+E+++ V G P C +++ +M+ CW +P RP F EIV S
Sbjct: 228 EEVLKFVIDGGHLDLPE----NCPDKLLELMRMCWQYNPKMRPTF-LEIVSS 274
Score = 35.8 bits (83), Expect = 0.002
Identities = 8/24 (33%), Positives = 14/24 (58%)
Query: 80 TCEEEVTAIMKRCWNEDPSERPDF 103
C +++ +M+ CW +P RP F
Sbjct: 245 NCPDKLLELMRMCWQYNPKMRPTF 268
>gnl|CDD|173648 cd05092, PTKc_TrkA, Catalytic domain of the Protein Tyrosine
Kinase, Tropomyosin Related Kinase A. Protein Tyrosine
Kinase (PTK) family; Tropomyosin Related Kinase A
(TrkA); catalytic (c) domain. The PTKc family is part of
a larger superfamily that includes the catalytic domains
of other kinases such as protein serine/threonine
kinases, RIO kinases, and phosphoinositide 3-kinase
(PI3K). PTKs catalyze the transfer of the
gamma-phosphoryl group from ATP to tyrosine (tyr)
residues in protein substrates. TrkA is a member of the
Trk subfamily of proteins, which are receptor tyr
kinases (RTKs) containing an extracellular region with
arrays of leucine-rich motifs flanked by two
cysteine-rich clusters followed by two
immunoglobulin-like domains, a transmembrane segment,
and an intracellular catalytic domain. Binding of TrkA
to its ligand, nerve growth factor (NGF), results in
receptor oligomerization and activation of the catalytic
domain. TrkA is expressed mainly in neural-crest-derived
sensory and sympathetic neurons of the peripheral
nervous system, and in basal forebrain cholinergic
neurons of the central nervous system. It is critical
for neuronal growth, differentiation and survival.
Alternative TrkA splicing has been implicated as a
pivotal regulator of neuroblastoma (NB) behavior. Normal
TrkA expression is associated with better NB prognosis,
while the hypoxia-regulated TrkAIII splice variant
promotes NB pathogenesis and progression. Aberrant TrkA
expression has also been demonstrated in non-neural
tumors including prostate, breast, lung, and pancreatic
cancers.
Length = 280
Score = 37.7 bits (87), Expect = 5e-04
Identities = 17/42 (40%), Positives = 24/42 (57%), Gaps = 4/42 (9%)
Query: 59 TEIVESVRKGEKCLRPSLSELTCEEEVTAIMKRCWNEDPSER 100
TE +E + +G + RP TC EV AIM+ CW +P +R
Sbjct: 231 TEAIECITQGRELERPR----TCPPEVYAIMQGCWQREPQQR 268
Score = 35.7 bits (82), Expect = 0.002
Identities = 16/41 (39%), Positives = 23/41 (56%), Gaps = 4/41 (9%)
Query: 14 EIVESVRKGEKCLRPNLSELTCEEEVTAIMKRCWNEDPSER 54
E +E + +G + RP TC EV AIM+ CW +P +R
Sbjct: 232 EAIECITQGRELERPR----TCPPEVYAIMQGCWQREPQQR 268
>gnl|CDD|133216 cd05085, PTKc_Fer, Catalytic domain of the Protein Tyrosine Kinase,
Fer. Protein Tyrosine Kinase (PTK) family; Fer kinase;
catalytic (c) domain. The PTKc family is part of a
larger superfamily that includes the catalytic domains
of other kinases such as protein serine/threonine
kinases, RIO kinases, and phosphoinositide 3-kinase
(PI3K). PTKs catalyze the transfer of the
gamma-phosphoryl group from ATP to tyrosine (tyr)
residues in protein substrates. Fer kinase is a member
of the Fes subfamily of proteins which are cytoplasmic
(or nonreceptor) tyr kinases containing an N-terminal
region with FCH (Fes/Fer/CIP4 homology) and coiled-coil
domains, followed by a SH2 domain, and a C-terminal
catalytic domain. Fer kinase is expressed in a wide
variety of tissues, and is found to reside in both the
cytoplasm and the nucleus. It plays important roles in
neuronal polarization and neurite development,
cytoskeletal reorganization, cell migration, growth
factor signaling, and the regulation of cell-cell
interactions mediated by adherens junctions and focal
adhesions. Fer kinase also regulates cell cycle
progression in malignant cells.
Length = 250
Score = 37.3 bits (86), Expect = 6e-04
Identities = 16/45 (35%), Positives = 24/45 (53%), Gaps = 4/45 (8%)
Query: 63 ESVRKGEKCLRPSLSELTCEEEVTAIMKRCWNEDPSERPDFTTLK 107
E V KG + P C ++V +M+RCW+ P RP F+ L+
Sbjct: 205 EQVEKGYRMSCPQ----KCPDDVYKVMQRCWDYKPENRPKFSELQ 245
Score = 36.1 bits (83), Expect = 0.002
Identities = 15/42 (35%), Positives = 22/42 (52%), Gaps = 4/42 (9%)
Query: 17 ESVRKGEKCLRPNLSELTCEEEVTAIMKRCWNEDPSERPDFT 58
E V KG + P C ++V +M+RCW+ P RP F+
Sbjct: 205 EQVEKGYRMSCPQ----KCPDDVYKVMQRCWDYKPENRPKFS 242
>gnl|CDD|173633 cd05052, PTKc_Abl, Catalytic domain of the Protein Tyrosine Kinase,
Abelson kinase. Protein Tyrosine Kinase (PTK) family;
Abelson (Abl) kinase; catalytic (c) domain. The PTKc
family is part of a larger superfamily that includes the
catalytic domains of other kinases such as protein
serine/threonine kinases, RIO kinases, and
phosphoinositide 3-kinase (PI3K). PTKs catalyze the
transfer of the gamma-phosphoryl group from ATP to
tyrosine (tyr) residues in protein substrates. Abl (or
c-Abl) is a ubiquitously-expressed cytoplasmic (or
nonreceptor) tyr kinase that contains SH3, SH2, and tyr
kinase domains in its N-terminal region, as well as
nuclear localization motifs, a putative DNA-binding
domain, and F- and G-actin binding domains in its
C-terminal tail. It also contains a short autoinhibitory
cap region in its N-terminus. Abl is normally inactive
and requires phosphorylation and myristoylation for
activation. Abl function depends on its subcellular
localization. In the cytoplasm, Abl plays a role in cell
proliferation and survival. In response to DNA damage or
oxidative stress, Abl is transported to the nucleus
where it induces apoptosis. In chronic myelogenous
leukemia (CML) patients, an aberrant translocation
results in the replacement of the first exon of Abl with
the BCR (breakpoint cluster region) gene. The resulting
BCR-Abl fusion protein is constitutively active and
associates into tetramers, resulting in a hyperactive
kinase sending a continuous signal. This leads to
uncontrolled proliferation, morphological transformation
and anti-apoptotic effects. BCR-Abl is the target of
selective inhibitors, such as imatinib (Gleevec), used
in the treatment of CML. Abl2, also known as ARG
(Abelson-related gene), is thought to play a cooperative
role with Abl in the proper development of the nervous
system. The Tel-ARG fusion protein, resulting from
reciprocal translocation between chromosomes 1 and 12,
is associated with acute myeloid leukemia (AML). The TEL
gene is a frequent fusion partner of other tyr kinase
oncogenes, including Tel/Abl, Tel/PDGFRbeta, and
Tel/Jak2, found in patients with leukemia and
myeloproliferative disorders.
Length = 263
Score = 37.1 bits (86), Expect = 7e-04
Identities = 16/55 (29%), Positives = 28/55 (50%), Gaps = 4/55 (7%)
Query: 59 TEIVESVRKGEKCLRPSLSELTCEEEVTAIMKRCWNEDPSERPDFTTLKAAIRKL 113
+++ E + KG + RP C +V +M+ CW +PS+RP F + A +
Sbjct: 212 SQVYELLEKGYRMERPE----GCPPKVYELMRACWQWNPSDRPSFAEIHQAFETM 262
Score = 35.6 bits (82), Expect = 0.002
Identities = 10/24 (41%), Positives = 15/24 (62%)
Query: 35 CEEEVTAIMKRCWNEDPSERPDFT 58
C +V +M+ CW +PS+RP F
Sbjct: 230 CPPKVYELMRACWQWNPSDRPSFA 253
>gnl|CDD|173644 cd05079, PTKc_Jak1_rpt2, Catalytic (repeat 2) domain of the Protein
Tyrosine Kinase, Janus kinase 1. Protein Tyrosine
Kinase (PTK) family; Janus kinase 1 (Jak1); catalytic
(c) domain (repeat 2). The PTKc family is part of a
larger superfamily that includes the catalytic domains
of other kinases such as protein serine/threonine
kinases, RIO kinases, and phosphoinositide 3-kinase
(PI3K). PTKs catalyze the transfer of the
gamma-phosphoryl group from ATP to tyrosine (tyr)
residues in protein substrates. Jak1 is a member of the
Janus kinase (Jak) subfamily of proteins, which are
cytoplasmic (or nonreceptor) tyr kinases containing an
N-terminal FERM domain, followed by a Src homology 2
(SH2) domain, a pseudokinase domain, and a C-terminal
tyr kinase domain. Jaks are crucial for cytokine
receptor signaling. They are activated by
autophosphorylation upon cytokine-induced receptor
aggregation, and subsequently trigger downstream
signaling events such as the phosphorylation of signal
transducers and activators of transcription (STATs).
Jak1 is widely expressed in many tissues. Many cytokines
are dependent on Jak1 for signaling, including those
that use the shared receptor subunits common gamma chain
(IL-2, IL-4, IL-7, IL-9, IL-15, IL-21) and gp130 (IL-6,
IL-11, oncostatin M, G-CSF, and IFNs, among others). The
many varied interactions of Jak1 and its ubiquitous
expression suggest many biological roles. Jak1 is
important in neurological development, as well as in
lymphoid development and function. It also plays a role
in the pathophysiology of cardiac hypertrophy and heart
failure. A mutation in the ATP-binding site of Jak1 was
identified in a human uterine leiomyosarcoma cell line,
resulting in defective cytokine induction and antigen
presentation, thus allowing the tumor to evade the
immune system.
Length = 284
Score = 37.2 bits (86), Expect = 8e-04
Identities = 17/48 (35%), Positives = 26/48 (54%), Gaps = 4/48 (8%)
Query: 59 TEIVESVRKGEKCLRPSLSELTCEEEVTAIMKRCWNEDPSERPDFTTL 106
T +V + +G++ RP C EEV +M++CW PS+R F L
Sbjct: 233 TRLVRVLEEGKRLPRPP----NCPEEVYQLMRKCWEFQPSKRTTFQNL 276
Score = 34.1 bits (78), Expect = 0.007
Identities = 16/47 (34%), Positives = 25/47 (53%), Gaps = 4/47 (8%)
Query: 15 IVESVRKGEKCLRPNLSELTCEEEVTAIMKRCWNEDPSERPDFTTEI 61
+V + +G++ RP C EEV +M++CW PS+R F I
Sbjct: 235 LVRVLEEGKRLPRPP----NCPEEVYQLMRKCWEFQPSKRTTFQNLI 277
>gnl|CDD|173654 cd05108, PTKc_EGFR, Catalytic domain of the Protein Tyrosine
Kinase, Epidermal Growth Factor Receptor. Protein
Tyrosine Kinase (PTK) family; Epidermal Growth Factor
Receptor (EGFR); catalytic (c) domain. The PTKc family
is part of a larger superfamily that includes the
catalytic domains of other kinases such as protein
serine/threonine kinases, RIO kinases, and
phosphoinositide 3-kinase (PI3K). PTKs catalyze the
transfer of the gamma-phosphoryl group from ATP to
tyrosine (tyr) residues in protein substrates. EGFR
(HER1, ErbB1) is a member of the EGFR (HER, ErbB)
subfamily of proteins, which are receptor tyr kinases
(RTKs) containing an extracellular EGF-related
ligand-binding region, a transmembrane helix, and a
cytoplasmic region with a tyr kinase domain and a
regulatory C-terminal tail. Unlike other tyr kinases,
phosphorylation of the activation loop of EGFR proteins
is not critical to their activation. Instead, they are
activated by ligand-induced dimerization, leading to the
phosphorylation of tyr residues in the C-terminal tail,
which serve as binding sites for downstream signaling
molecules. Ligands for EGFR include EGF, heparin binding
EGF-like growth factor (HBEGF), epiregulin,
amphiregulin, TGFalpha, and betacellulin. Upon ligand
binding, EGFR can form homo- or heterodimers with other
EGFR subfamily members. The EGFR signaling pathway is
one of the most important pathways regulating cell
proliferation, differentiation, survival, and growth.
Overexpression and mutation in the kinase domain of EGFR
have been implicated in the development and progression
of a variety of cancers. A number of monoclonal
antibodies and small molecule inhibitors have been
developed that target EGFR, including the antibodies
Cetuximab and Panitumumab, which are used in combination
with other therapies for the treatment of colorectal
cancer and non-small cell lung carcinoma (NSCLC). The
small molecule inhibitors Gefitinib (Iressa) and
Erlotinib (Tarceva), already used for NSCLC, are
undergoing clinical trials for other types of cancer
including gastrointestinal, breast, head and neck, and
bladder.
Length = 316
Score = 36.9 bits (85), Expect = 8e-04
Identities = 18/57 (31%), Positives = 27/57 (47%), Gaps = 4/57 (7%)
Query: 59 TEIVESVRKGEKCLRPSLSELTCEEEVTAIMKRCWNEDPSERPDFTTLKAAIRKLNK 115
+EI + KGE+ +P + C +V IM +CW D RP F L K+ +
Sbjct: 218 SEISSILEKGERLPQPPI----CTIDVYMIMVKCWMIDADSRPKFRELIIEFSKMAR 270
Score = 35.0 bits (80), Expect = 0.004
Identities = 18/50 (36%), Positives = 25/50 (50%), Gaps = 4/50 (8%)
Query: 14 EIVESVRKGEKCLRPNLSELTCEEEVTAIMKRCWNEDPSERPDFTTEIVE 63
EI + KGE+ +P + C +V IM +CW D RP F I+E
Sbjct: 219 EISSILEKGERLPQPPI----CTIDVYMIMVKCWMIDADSRPKFRELIIE 264
>gnl|CDD|133192 cd05061, PTKc_InsR, Catalytic domain of the Protein Tyrosine
Kinase, Insulin Receptor. Protein Tyrosine Kinase (PTK)
family; Insulin Receptor (InsR); catalytic (c) domain.
The PTKc family is part of a larger superfamily that
includes the catalytic domains of other kinases such as
protein serine/threonine kinases, RIO kinases, and
phosphoinositide 3-kinase (PI3K). PTKs catalyze the
transfer of the gamma-phosphoryl group from ATP to
tyrosine (tyr) residues in protein substrates. InsR is a
receptor tyr kinase (RTK) that is composed of two
alphabeta heterodimers. Binding of the insulin ligand to
the extracellular alpha subunit activates the
intracellular tyr kinase domain of the transmembrane
beta subunit. Receptor activation leads to
autophosphorylation, stimulating downstream kinase
activities, which initiate signaling cascades and
biological function. InsR signaling plays an important
role in many cellular processes including glucose
homeostasis, glycogen synthesis, lipid and protein
metabolism, ion and amino acid transport, cell cycle and
proliferation, cell differentiation, gene transcription,
and nitric oxide synthesis. Insulin resistance, caused
by abnormalities in InsR signaling, has been described
in diabetes, hypertension, cardiovascular disease,
metabolic syndrome, heart failure, and female
infertility.
Length = 288
Score = 36.9 bits (85), Expect = 8e-04
Identities = 18/46 (39%), Positives = 25/46 (54%), Gaps = 4/46 (8%)
Query: 35 CEEEVTAIMKRCWNEDPSERPDFTTEIVESVRKGEKCLRPSLSELT 80
C E VT +M+ CW +P RP F EIV ++ L PS E++
Sbjct: 246 CPERVTDLMRMCWQFNPKMRPTF-LEIVNLLKDD---LHPSFPEVS 287
Score = 30.7 bits (69), Expect = 0.13
Identities = 11/23 (47%), Positives = 14/23 (60%)
Query: 81 CEEEVTAIMKRCWNEDPSERPDF 103
C E VT +M+ CW +P RP F
Sbjct: 246 CPERVTDLMRMCWQFNPKMRPTF 268
>gnl|CDD|88330 cd05047, PTKc_Tie, Catalytic domain of Tie Protein Tyrosine
Kinases. Protein Tyrosine Kinase (PTK) family; Tie
subfamily; catalytic (c) domain. The Tie subfamily
consists of Tie1 and Tie2. The PTKc family is part of a
larger superfamily that includes the catalytic domains
of other kinases such as protein serine/threonine
kinases, RIO kinases, and phosphoinositide 3-kinase
(PI3K). PTKs catalyze the transfer of the
gamma-phosphoryl group from ATP to tyrosine (tyr)
residues in protein substrates. Tie proteins are
receptor tyr kinases (RTKs) containing an extracellular
region, a transmembrane segment, and an intracellular
catalytic domain. The extracellular region contains an
immunoglobulin (Ig)-like domain, three epidermal growth
factor (EGF)-like domains, a second Ig-like domain, and
three fibronectin type III repeats. Tie receptors are
specifically expressed in endothelial cells and
hematopoietic stem cells. The angiopoietins (Ang-1 to
Ang-4) serve as ligands for Tie2, while no specific
ligand has been identified for Tie1. The binding of
Ang-1 to Tie2 leads to receptor autophosphorylation and
activation, promoting cell migration and survival. In
contrast, Ang-2 binding to Tie2 does not result in the
same response, suggesting that Ang-2 may function as an
antagonist. In vivo studies of Tie1 show that it is
critical in vascular development.
Length = 270
Score = 37.0 bits (85), Expect = 9e-04
Identities = 16/54 (29%), Positives = 31/54 (57%), Gaps = 4/54 (7%)
Query: 60 EIVESVRKGEKCLRPSLSELTCEEEVTAIMKRCWNEDPSERPDFTTLKAAIRKL 113
E+ E + +G + +P C++EV +M++CW E P ERP F + ++ ++
Sbjct: 219 ELYEKLPQGYRLEKPL----NCDDEVYDLMRQCWREKPYERPSFAQILVSLNRM 268
Score = 36.6 bits (84), Expect = 0.001
Identities = 16/44 (36%), Positives = 26/44 (59%), Gaps = 4/44 (9%)
Query: 14 EIVESVRKGEKCLRPNLSELTCEEEVTAIMKRCWNEDPSERPDF 57
E+ E + +G + +P C++EV +M++CW E P ERP F
Sbjct: 219 ELYEKLPQGYRLEKPL----NCDDEVYDLMRQCWREKPYERPSF 258
>gnl|CDD|133187 cd05056, PTKc_FAK, Catalytic domain of the Protein Tyrosine Kinase,
Focal Adhesion Kinase. Protein Tyrosine Kinase (PTK)
family; Focal Adhesion Kinase (FAK); catalytic (c)
domain. The PTKc family is part of a larger superfamily
that includes the catalytic domains of other kinases
such as protein serine/threonine kinases, RIO kinases,
and phosphoinositide 3-kinase (PI3K). PTKs catalyze the
transfer of the gamma-phosphoryl group from ATP to
tyrosine (tyr) residues in protein substrates. FAK is a
cytoplasmic (or nonreceptor) tyr kinase that contains an
autophosphorylation site and a FERM domain at the
N-terminus, a central tyr kinase domain, proline-rich
regions, and a C-terminal FAT (focal adhesion targeting)
domain. FAK activity is dependent on integrin-mediated
cell adhesion, which facilitates N-terminal
autophosphorylation. Full activation is achieved by the
phosphorylation of its two adjacent A-loop tyrosines.
FAK is important in mediating signaling initiated at
sites of cell adhesions and at growth factor receptors.
Through diverse molecular interactions, FAK functions as
a biosensor or integrator to control cell motility. It
is a key regulator of cell survival, proliferation,
migration and invasion, and thus plays an important role
in the development and progression of cancer. Src binds
to autophosphorylated FAK forming the FAK-Src dual
kinase complex, which is activated in a wide variety of
tumor cells and generates signals promoting growth and
metastasis. FAK is being developed as a target for
cancer therapy.
Length = 270
Score = 36.6 bits (85), Expect = 0.001
Identities = 16/42 (38%), Positives = 23/42 (54%), Gaps = 1/42 (2%)
Query: 69 EKCLRPSLSELTCEEEVTAIMKRCWNEDPSERPDFTTLKAAI 110
E R + C + ++M +CW DPS+RP FT LKA +
Sbjct: 222 ENGERLPMPPN-CPPTLYSLMTKCWAYDPSKRPRFTELKAQL 262
Score = 32.8 bits (75), Expect = 0.020
Identities = 16/59 (27%), Positives = 29/59 (49%), Gaps = 6/59 (10%)
Query: 14 EIVESVRKGEKCLRPNLSELTCEEEVTAIMKRCWNEDPSERPDFT--TEIVESVRKGEK 70
+++ + GE+ P C + ++M +CW DPS+RP FT + + + EK
Sbjct: 216 DVIGRIENGERLPMPPN----CPPTLYSLMTKCWAYDPSKRPRFTELKAQLSDILQEEK 270
>gnl|CDD|133247 cd05116, PTKc_Syk, Catalytic domain of the Protein Tyrosine Kinase,
Spleen tyrosine kinase. Protein Tyrosine Kinase (PTK)
family; Spleen tyrosine kinase (Syk); catalytic (c)
domain. The PTKc family is part of a larger superfamily
that includes the catalytic domains of other kinases
such as protein serine/threonine kinases, RIO kinases,
and phosphoinositide 3-kinase (PI3K). PTKs catalyze the
transfer of the gamma-phosphoryl group from ATP to
tyrosine (tyr) residues in protein substrates. Syk,
together with Zap-70, form the Syk subfamily of kinases
which are cytoplasmic (or nonreceptor) tyr kinases
containing two Src homology 2 (SH2) domains N-terminal
to the catalytic tyr kinase domain. Syk was first cloned
from the spleen, and its function in hematopoietic cells
is well-established. Syk is involved in the signaling
downstream of activated receptors (including B-cell and
Fc receptors) that contain ITAMs (immunoreceptor tyr
activation motifs), leading to processes such as cell
proliferation, differentiation, survival, adhesion,
migration, and phagocytosis. More recently, Syk
expression has been detected in other cell types
(including epithelial cells, vascular endothelial cells,
neurons, hepatocytes, and melanocytes), suggesting a
variety of biological functions in non-immune cells. Syk
plays a critical role in maintaining vascular integrity
and in wound healing during embryogenesis. It also
regulates Vav3, which is important in osteoclast
function including bone development. In breast
epithelial cells, where Syk acts as a negative regulator
for epidermal growth factor receptor (EGFR) signaling,
loss of Syk expression is associated with abnormal
proliferation during cancer development suggesting a
potential role as a tumor suppressor. In mice, Syk has
been shown to inhibit malignant transformation of
mammary epithelial cells induced with murine mammary
tumor virus (MMTV).
Length = 257
Score = 36.9 bits (85), Expect = 0.001
Identities = 15/52 (28%), Positives = 24/52 (46%), Gaps = 4/52 (7%)
Query: 60 EIVESVRKGEKCLRPSLSELTCEEEVTAIMKRCWNEDPSERPDFTTLKAAIR 111
E+ + + GE+ P C E+ +MK CW ERP F ++ +R
Sbjct: 206 EVTQMIESGERMECPQ----RCPPEMYDLMKLCWTYGVDERPGFAVVELRLR 253
Score = 34.6 bits (79), Expect = 0.006
Identities = 14/46 (30%), Positives = 21/46 (45%), Gaps = 4/46 (8%)
Query: 13 DEIVESVRKGEKCLRPNLSELTCEEEVTAIMKRCWNEDPSERPDFT 58
+E+ + + GE+ P C E+ +MK CW ERP F
Sbjct: 205 NEVTQMIESGERMECPQ----RCPPEMYDLMKLCWTYGVDERPGFA 246
>gnl|CDD|133200 cd05069, PTKc_Yes, Catalytic domain of the Protein Tyrosine Kinase,
Yes. Protein Tyrosine Kinase (PTK) family; Yes kinase;
catalytic (c) domain. The PTKc family is part of a
larger superfamily that includes the catalytic domains
of other kinases such as protein serine/threonine
kinases, RIO kinases, and phosphoinositide 3-kinase
(PI3K). PTKs catalyze the transfer of the
gamma-phosphoryl group from ATP to tyrosine (tyr)
residues in protein substrates. Yes (or c-Yes) is a
member of the Src subfamily of proteins, which are
cytoplasmic (or non-receptor) tyr kinases. Src kinases
contain an N-terminal SH4 domain with a myristoylation
site, followed by SH3 and SH2 domains, a tyr kinase
domain, and a regulatory C-terminal region containing a
conserved tyr. They are activated by autophosphorylation
at the tyr kinase domain, but are negatively regulated
by phosphorylation at the C-terminal tyr by Csk
(C-terminal Src Kinase). Src proteins are involved in
signaling pathways that regulate cytokine and growth
factor responses, cytoskeleton dynamics, cell
proliferation, survival, and differentiation. c-Yes
kinase is the cellular homolog of the oncogenic protein
(v-Yes) encoded by the Yamaguchi 73 and Esh sarcoma
viruses. It displays functional overlap with other Src
subfamily members, particularly Src. It also shows some
unique functions such as binding to occludins,
transmembrane proteins that regulate extracellular
interactions in tight junctions. Yes also associates
with a number of proteins in different cell types that
Src does not interact with, like JAK2 and gp130 in
pre-adipocytes, and Pyk2 in treated pulmonary vein
endothelial cells. Although the biological function of
Yes remains unclear, it appears to have a role in
regulating cell-cell interactions and vesicle
trafficking in polarized cells.
Length = 260
Score = 36.2 bits (83), Expect = 0.001
Identities = 17/49 (34%), Positives = 27/49 (55%), Gaps = 4/49 (8%)
Query: 60 EIVESVRKGEKCLRPSLSELTCEEEVTAIMKRCWNEDPSERPDFTTLKA 108
E++E V +G + P C E + +MK CW +DP ERP F +++
Sbjct: 211 EVLEQVERGYRMPCPQ----GCPESLHELMKLCWKKDPDERPTFEYIQS 255
Score = 35.8 bits (82), Expect = 0.002
Identities = 17/44 (38%), Positives = 24/44 (54%), Gaps = 4/44 (9%)
Query: 14 EIVESVRKGEKCLRPNLSELTCEEEVTAIMKRCWNEDPSERPDF 57
E++E V +G + P C E + +MK CW +DP ERP F
Sbjct: 211 EVLEQVERGYRMPCPQ----GCPESLHELMKLCWKKDPDERPTF 250
>gnl|CDD|133229 cd05098, PTKc_FGFR1, Catalytic domain of the Protein Tyrosine
Kinase, Fibroblast Growth Factor Receptor 1. Protein
Tyrosine Kinase (PTK) family; Fibroblast Growth Factor
Receptor 1 (FGFR1); catalytic (c) domain. The PTKc
family is part of a larger superfamily that includes the
catalytic domains of other kinases such as protein
serine/threonine kinases, RIO kinases, and
phosphoinositide 3-kinase (PI3K). PTKs catalyze the
transfer of the gamma-phosphoryl group from ATP to
tyrosine (tyr) residues in protein substrates. FGFR1 is
part of the FGFR subfamily, which are receptor tyr
kinases (RTKs) containing an extracellular
ligand-binding region with three immunoglobulin-like
domains, a transmembrane segment, and an intracellular
catalytic domain. The binding of FGFRs to their ligands,
the FGFs, results in receptor dimerization and
activation, and intracellular signaling. The binding of
FGFs to FGFRs is promiscuous, in that a receptor may be
activated by several ligands and a ligand may bind to
more that one type of receptor. Alternative splicing of
FGFR1 transcripts produces a variety of isoforms, which
are differentially expressed in cells. FGFR1 binds the
ligands, FGF1 and FGF2, with high affinity and has also
been reported to bind FGF4, FGF6, and FGF9. FGFR1
signaling is critical in the control of cell migration
during embryo development. It promotes cell
proliferation in fibroblasts. Nuclear FGFR1 plays a role
in the regulation of transcription. Mutations,
insertions or deletions of FGFR1 have been identified in
patients with Kallman's syndrome (KS), an inherited
disorder characterized by hypogonadotropic hypogonadism
and loss of olfaction. Aberrant FGFR1 expression has
been found in some human cancers including 8P11
myeloproliferative syndrome (EMS), breast cancer, and
pancreatic adenocarcinoma.
Length = 307
Score = 36.1 bits (83), Expect = 0.002
Identities = 15/47 (31%), Positives = 27/47 (57%), Gaps = 4/47 (8%)
Query: 60 EIVESVRKGEKCLRPSLSELTCEEEVTAIMKRCWNEDPSERPDFTTL 106
E+ + +++G + +PS C E+ +M+ CW+ PS+RP F L
Sbjct: 250 ELFKLLKEGHRMDKPS----NCTNELYMMMRDCWHAVPSQRPTFKQL 292
Score = 34.6 bits (79), Expect = 0.005
Identities = 15/55 (27%), Positives = 33/55 (60%), Gaps = 5/55 (9%)
Query: 13 DEIVESVRKGEKCLRPNLSELTCEEEVTAIMKRCWNEDPSERPDFTTEIVESVRK 67
+E+ + +++G + +P+ C E+ +M+ CW+ PS+RP F ++VE + +
Sbjct: 249 EELFKLLKEGHRMDKPS----NCTNELYMMMRDCWHAVPSQRPTF-KQLVEDLDR 298
>gnl|CDD|133175 cd05043, PTK_Ryk, Pseudokinase domain of Ryk (Receptor related to
tyrosine kinase). Protein Tyrosine Kinase (PTK) family;
Receptor related to tyrosine kinase (Ryk); pseudokinase
domain. The PTKc (catalytic domain) family to which this
subfamily belongs, is part of a larger superfamily that
includes the catalytic domains of other kinases such as
protein serine/threonine kinases, RIO kinases, and
phosphoinositide 3-kinase (PI3K). PTKs catalyze the
transfer of the gamma-phosphoryl group from ATP to
tyrosine (tyr) residues in protein substrates. Ryk is a
receptor tyr kinase (RTK) containing an extracellular
region with two leucine-rich motifs, a transmembrane
segment, and an intracellular inactive pseudokinase
domain. The extracellular region of Ryk shows homology
to the N-terminal domain of Wnt inhibitory factor-1
(WIF) and serves as the ligand (Wnt) binding domain of
Ryk. Ryk is expressed in many different tissues both
during development and in adults, suggesting a
widespread function. It acts as a chemorepulsive axon
guidance receptor of Wnt glycoproteins and is
responsible for the establishment of axon tracts during
the development of the central nervous system. In
addition, studies in mice reveal that Ryk is essential
in skeletal, craniofacial, and cardiac development.
Thus, it appears Ryk is involved in signal transduction
despite its lack of kinase activity. Ryk may function as
an accessory protein that modulates the signals coming
from catalytically active partner RTKs such as the Eph
receptors.
Length = 280
Score = 35.9 bits (83), Expect = 0.002
Identities = 16/55 (29%), Positives = 28/55 (50%), Gaps = 4/55 (7%)
Query: 60 EIVESVRKGEKCLRPSLSELTCEEEVTAIMKRCWNEDPSERPDFTTLKAAIRKLN 114
E+ ++ G + +P + C +E+ A+M CW DP ERP F+ L + +
Sbjct: 227 EMAAYLKDGYRLAQP----INCPDELFAVMACCWALDPEERPSFSQLVQCLTDFH 277
Score = 34.3 bits (79), Expect = 0.008
Identities = 15/45 (33%), Positives = 24/45 (53%), Gaps = 4/45 (8%)
Query: 14 EIVESVRKGEKCLRPNLSELTCEEEVTAIMKRCWNEDPSERPDFT 58
E+ ++ G + +P C +E+ A+M CW DP ERP F+
Sbjct: 227 EMAAYLKDGYRLAQPI----NCPDELFAVMACCWALDPEERPSFS 267
>gnl|CDD|133178 cd05046, PTK_CCK4, Pseudokinase domain of the Protein Tyrosine
Kinase, Colon Carcinoma Kinase 4. Protein Tyrosine
Kinase (PTK) family; Colon Carcinoma Kinase 4 (CCK4);
pseudokinase domain. The PTKc (catalytic domain) family,
to which this subfamily belongs, includes the catalytic
domains of other kinases such as protein
serine/threonine kinases, RIO kinases, and
phosphoinositide 3-kinase (PI3K). PTKs catalyze the
transfer of the gamma-phosphoryl group from ATP to
tyrosine (tyr) residues in protein substrates. CCK4,
also called protein tyrosine kinase 7 (PTK7), is an
orphan receptor tyr kinase (RTK) containing an
extracellular region with seven immunoglobulin domains,
a transmembrane segment, and an intracellular inactive
pseudokinase domain. Studies in mice reveal that CCK4 is
essential for neural development. Mouse embryos
containing a truncated CCK4 die perinatally and display
craniorachischisis, a severe form of neural tube defect.
The mechanism of action of the CCK4 pseudokinase is
still unknown. Other pseudokinases such as HER3 rely on
the activity of partner RTKs.
Length = 275
Score = 35.9 bits (83), Expect = 0.002
Identities = 11/30 (36%), Positives = 18/30 (60%)
Query: 81 CEEEVTAIMKRCWNEDPSERPDFTTLKAAI 110
C + +M RCW +P +RP F+ L +A+
Sbjct: 244 CPSRLYKLMTRCWAVNPKDRPSFSELVSAL 273
Score = 32.1 bits (73), Expect = 0.041
Identities = 9/24 (37%), Positives = 14/24 (58%)
Query: 35 CEEEVTAIMKRCWNEDPSERPDFT 58
C + +M RCW +P +RP F+
Sbjct: 244 CPSRLYKLMTRCWAVNPKDRPSFS 267
>gnl|CDD|133189 cd05058, PTKc_Met_Ron, Catalytic domain of the Protein Tyrosine
Kinases, Met and Ron. Protein Tyrosine Kinase (PTK)
family; Met and Ron; catalytic (c) domain. The PTKc
family is part of a larger superfamily that includes the
catalytic domains of other kinases such as protein
serine/threonine kinases, RIO kinases, and
phosphoinositide 3-kinase (PI3K). PTKs catalyze the
transfer of the gamma-phosphoryl group from ATP to
tyrosine (tyr) residues in protein substrates. Met and
Ron are receptor tyr kinases (RTKs) composed of an
alpha-beta heterodimer. The extracellular alpha chain is
disulfide linked to the beta chain, which contains an
extracellular ligand-binding region with a sema domain,
a PSI domain and four IPT repeats, a transmembrane
segment, and an intracellular catalytic domain. Binding
to their ligands leads to receptor dimerization,
autophosphorylation, activation, and intracellular
signaling. Met binds to the ligand, hepatocyte growth
factor/scatter factor (HGF/SF), and is also called the
HGF receptor. HGF/Met signaling plays a role in growth,
transformation, cell motility, invasion, metastasis,
angiogenesis, wound healing, and tissue regeneration.
Aberrant expression of Met through mutations or gene
amplification is associated with many human cancers
including hereditary papillary renal and gastric
carcinomas. The ligand for Ron is macrophage stimulating
protein (MSP). Ron signaling is important in regulating
cell motility, adhesion, proliferation, and apoptosis.
Aberrant Ron expression is implicated in tumorigenesis
and metastasis.
Length = 262
Score = 35.9 bits (83), Expect = 0.002
Identities = 16/57 (28%), Positives = 28/57 (49%), Gaps = 5/57 (8%)
Query: 55 PDFTT-EIVESVRKGEKCLRPSLSELTCEEEVTAIMKRCWNEDPSERPDFTTLKAAI 110
PD + +I + +G + L+P C + + +M CW+ P RP F+ L + I
Sbjct: 204 PDVDSFDITVYLLQGRRLLQPEY----CPDPLYEVMLSCWHPKPEMRPTFSELVSRI 256
Score = 33.6 bits (77), Expect = 0.013
Identities = 12/46 (26%), Positives = 22/46 (47%), Gaps = 4/46 (8%)
Query: 14 EIVESVRKGEKCLRPNLSELTCEEEVTAIMKRCWNEDPSERPDFTT 59
+I + +G + L+P C + + +M CW+ P RP F+
Sbjct: 210 DITVYLLQGRRLLQPEY----CPDPLYEVMLSCWHPKPEMRPTFSE 251
>gnl|CDD|173653 cd05105, PTKc_PDGFR_alpha, Catalytic domain of the Protein Tyrosine
Kinase, Platelet Derived Growth Factor Receptor alpha.
Protein Tyrosine Kinase (PTK) family; Platelet Derived
Growth Factor Receptor (PDGFR) alpha; catalytic (c)
domain. The PTKc family is part of a larger superfamily
that includes the catalytic domains of other kinases
such as protein serine/threonine kinases, RIO kinases,
and phosphoinositide 3-kinase (PI3K). PTKs catalyze the
transfer of the gamma-phosphoryl group from ATP to
tyrosine (tyr) residues in protein substrates. PDGFR
alpha is a receptor tyr kinase (RTK) containing an
extracellular ligand-binding region with five
immunoglobulin-like domains, a transmembrane segment,
and an intracellular catalytic domain. The binding to
its ligands, the PDGFs, leads to receptor dimerization,
trans phosphorylation and activation, and intracellular
signaling. PDGFR alpha forms homodimers or heterodimers
with PDGFR beta, depending on the nature of the PDGF
ligand. PDGF-AA, PDGF-AB, and PDGF-CC induce PDGFR alpha
homodimerization. PDGFR signaling plays many roles in
normal embryonic development and adult physiology. PDGFR
alpha signaling is important in the formation of lung
alveoli, intestinal villi, mesenchymal dermis, and hair
follicles, as well as in the development of
oligodendrocytes, retinal astrocytes, neural crest
cells, and testicular cells. Aberrant PDGFR alpha
expression is associated with some human cancers.
Mutations in PDGFR alpha have been found within a subset
of gastrointestinal stromal tumors (GISTs). An active
fusion protein FIP1L1-PDGFR alpha, derived from
interstitial deletion, is associated with idiopathic
hypereosinophilic syndrome (HES) and chronic
eosinophilic leukemia (CEL).
Length = 400
Score = 35.8 bits (82), Expect = 0.002
Identities = 15/31 (48%), Positives = 22/31 (70%), Gaps = 2/31 (6%)
Query: 37 EEVTAIMKRCWNEDPSERPDF--TTEIVESV 65
+EV IM +CWN +P +RP F ++IVES+
Sbjct: 367 QEVYDIMVKCWNSEPEKRPSFLHLSDIVESL 397
Score = 34.6 bits (79), Expect = 0.005
Identities = 13/31 (41%), Positives = 18/31 (58%)
Query: 83 EEVTAIMKRCWNEDPSERPDFTTLKAAIRKL 113
+EV IM +CWN +P +RP F L + L
Sbjct: 367 QEVYDIMVKCWNSEPEKRPSFLHLSDIVESL 397
>gnl|CDD|133235 cd05104, PTKc_Kit, Catalytic domain of the Protein Tyrosine Kinase,
Kit. Protein Tyrosine Kinase (PTK) family; Kit (or
c-Kit); catalytic (c) domain. The PTKc family is part of
a larger superfamily that includes the catalytic domains
of other kinases such as protein serine/threonine
kinases, RIO kinases, and phosphoinositide 3-kinase
(PI3K). PTKs catalyze the transfer of the
gamma-phosphoryl group from ATP to tyrosine (tyr)
residues in protein substrates. Kit is a member of the
Platelet Derived Growth Factor Receptor (PDGFR)
subfamily of proteins, which are receptor tyr kinases
(RTKs) containing an extracellular ligand-binding region
with five immunoglobulin-like domains, a transmembrane
segment, and an intracellular catalytic domain. The
binding of Kit to its ligand, the stem-cell factor
(SCF), leads to receptor dimerization, trans
phosphorylation and activation, and intracellular
signaling. Kit is important in the development of
melanocytes, germ cells, mast cells, hematopoietic stem
cells, the interstitial cells of Cajal, and the
pacemaker cells of the GI tract. Kit signaling is
involved in major cellular functions including cell
survival, proliferation, differentiation, adhesion, and
chemotaxis. Mutations in Kit, which result in
constitutive ligand-independent activation, are found in
human cancers such as gastrointestinal stromal tumor
(GIST) and testicular germ cell tumor (TGCT). The
aberrant expression of Kit and/or SCF is associated with
other tumor types such as systemic mastocytosis and
cancers of the breast, neurons, lung, prostate, colon,
and rectum. Although the structure of the human Kit
catalytic domain is known, it is excluded from this
specific alignment model because it contains a deletion
in its sequence.
Length = 375
Score = 35.3 bits (81), Expect = 0.003
Identities = 16/49 (32%), Positives = 28/49 (57%), Gaps = 5/49 (10%)
Query: 19 VRKGEKCLRPNLSELTCEEEVTAIMKRCWNEDPSERPDFTTEIVESVRK 67
+++G + L P + E+ IMK CW+ DP +RP F +IV+ + +
Sbjct: 330 IKEGYRMLSPECAPS----EMYDIMKSCWDADPLKRPTF-KQIVQLIEQ 373
Score = 33.7 bits (77), Expect = 0.013
Identities = 15/48 (31%), Positives = 25/48 (52%), Gaps = 4/48 (8%)
Query: 65 VRKGEKCLRPSLSELTCEEEVTAIMKRCWNEDPSERPDFTTLKAAIRK 112
+++G + L P + E+ IMK CW+ DP +RP F + I +
Sbjct: 330 IKEGYRMLSPECAPS----EMYDIMKSCWDADPLKRPTFKQIVQLIEQ 373
>gnl|CDD|173629 cd05041, PTKc_Fes_like, Catalytic domain of Fes-like Protein
Tyrosine Kinases. Protein Tyrosine Kinase (PTK) family;
Fes subfamily; catalytic (c) domain. Fes subfamily
members include Fes (or Fps), Fer, and similar proteins.
The PTKc family is part of a larger superfamily that
includes the catalytic domains of other kinases such as
protein serine/threonine kinases, RIO kinases, and
phosphoinositide 3-kinase (PI3K). PTKs catalyze the
transfer of the gamma-phosphoryl group from ATP to
tyrosine (tyr) residues in protein substrates. Fes
subfamily proteins are cytoplasmic (or nonreceptor) tyr
kinases containing an N-terminal region with FCH
(Fes/Fer/CIP4 homology) and coiled-coil domains,
followed by a SH2 domain, and a C-terminal catalytic
domain. The genes for Fes (feline sarcoma) and Fps
(Fujinami poultry sarcoma) were first isolated from
tumor-causing retroviruses. The viral oncogenes encode
chimeric Fes proteins consisting of Gag sequences at the
N-termini, resulting in unregulated tyr kinase activity.
Fes and Fer kinases play roles in haematopoiesis,
inflammation and immunity, growth factor signaling,
cytoskeletal regulation, cell migration and adhesion,
and the regulation of cell-cell interactions. Fes and
Fer show redundancy in their biological functions.
Length = 251
Score = 35.1 bits (81), Expect = 0.003
Identities = 15/44 (34%), Positives = 22/44 (50%), Gaps = 4/44 (9%)
Query: 63 ESVRKGEKCLRPSLSELTCEEEVTAIMKRCWNEDPSERPDFTTL 106
E + G + P L C EE+ +M +CW DP RP F+ +
Sbjct: 206 ERIESGYRMPAPQL----CPEEIYRLMLQCWAYDPENRPSFSEI 245
Score = 35.1 bits (81), Expect = 0.003
Identities = 17/51 (33%), Positives = 25/51 (49%), Gaps = 5/51 (9%)
Query: 17 ESVRKGEKCLRPNLSELTCEEEVTAIMKRCWNEDPSERPDFTTEIVESVRK 67
E + G + P L C EE+ +M +CW DP RP F +EI ++
Sbjct: 206 ERIESGYRMPAPQL----CPEEIYRLMLQCWAYDPENRPSF-SEIYNELQI 251
>gnl|CDD|133214 cd05083, PTKc_Chk, Catalytic domain of the Protein Tyrosine Kinase,
Csk homologous kinase. Protein Tyrosine Kinase (PTK)
family; Csk homologous kinase (Chk); catalytic (c)
domain. The PTKc family is part of a larger superfamily
that includes the catalytic domains of other kinases
such as protein serine/threonine kinases, RIO kinases,
and phosphoinositide 3-kinase (PI3K). PTKs catalyze the
transfer of the gamma-phosphoryl group from ATP to
tyrosine (tyr) residues in protein substrates. Csk
subfamily kinases are cytoplasmic (or nonreceptor) tyr
kinases containing the Src homology domains, SH3 and
SH2, N-terminal to the catalytic tyr kinase domain. They
negatively regulate the activity of Src kinases that are
anchored to the plasma membrane. Chk is also referred to
as megakaryocyte-associated tyrosine kinase (Matk). To
inhibit Src kinases, Chk is translocated to the membrane
via binding to specific transmembrane proteins,
G-proteins, or adaptor proteins near the membrane. Chk
inhibit Src kinases using a noncatalytic mechanism by
simply binding to them. As a negative regulator of Src
kinases, Chk may play important roles in cell
proliferation, survival, and differentiation, and
consequently, in cancer development and progression. Chk
is expressed in brain and hematopoietic cells. Studies
in mice reveal that Chk is not functionally redundant
with Csk and that it plays an important role as a
regulator of immune responses. Chk also plays a role in
neural differentiation in a manner independent of Src by
enhancing Mapk activation via Ras-mediated signaling.
Length = 254
Score = 34.9 bits (80), Expect = 0.004
Identities = 17/53 (32%), Positives = 25/53 (47%), Gaps = 4/53 (7%)
Query: 60 EIVESVRKGEKCLRPSLSELTCEEEVTAIMKRCWNEDPSERPDFTTLKAAIRK 112
E+ E V KG + P C +V +M CW +P +RP F L+ + K
Sbjct: 205 EVKECVEKGYRMEPPE----GCPADVYVLMTSCWETEPKKRPSFHKLREKLEK 253
Score = 33.4 bits (76), Expect = 0.016
Identities = 15/44 (34%), Positives = 21/44 (47%), Gaps = 4/44 (9%)
Query: 14 EIVESVRKGEKCLRPNLSELTCEEEVTAIMKRCWNEDPSERPDF 57
E+ E V KG + P C +V +M CW +P +RP F
Sbjct: 205 EVKECVEKGYRMEPPE----GCPADVYVLMTSCWETEPKKRPSF 244
>gnl|CDD|173650 cd05094, PTKc_TrkC, Catalytic domain of the Protein Tyrosine
Kinase, Tropomyosin Related Kinase C. Protein Tyrosine
Kinase (PTK) family; Tropomyosin Related Kinase C
(TrkC); catalytic (c) domain. The PTKc family is part of
a larger superfamily that includes the catalytic domains
of other kinases such as protein serine/threonine
kinases, RIO kinases, and phosphoinositide 3-kinase
(PI3K). PTKs catalyze the transfer of the
gamma-phosphoryl group from ATP to tyrosine (tyr)
residues in protein substrates. TrkC is a member of the
Trk subfamily of proteins, which are receptor tyr
kinases (RTKs) containing an extracellular region with
arrays of leucine-rich motifs flanked by two
cysteine-rich clusters followed by two
immunoglobulin-like domains, a transmembrane segment,
and an intracellular catalytic domain. Binding of TrkC
to its ligand, neurotrophin 3 (NT3), results in receptor
oligomerization and activation of the catalytic domain.
TrkC is broadly expressed in the nervous system and in
some non-neural tissues including the developing heart.
NT3/TrkC signaling plays an important role in the
innervation of the cardiac conducting system and the
development of smooth muscle cells. Mice deficient with
NT3 and TrkC have multiple heart defects. NT3/TrkC
signaling is also critical for the development and
maintenance of enteric neurons that are important for
the control of gut peristalsis.
Length = 291
Score = 35.0 bits (80), Expect = 0.004
Identities = 17/57 (29%), Positives = 28/57 (49%), Gaps = 4/57 (7%)
Query: 59 TEIVESVRKGEKCLRPSLSELTCEEEVTAIMKRCWNEDPSERPDFTTLKAAIRKLNK 115
TE++E + +G RP + C +EV IM CW +P +R + + + L K
Sbjct: 232 TEVIECITQGRVLERPRV----CPKEVYDIMLGCWQREPQQRLNIKEIYKILHALGK 284
Score = 32.7 bits (74), Expect = 0.029
Identities = 14/41 (34%), Positives = 22/41 (53%), Gaps = 4/41 (9%)
Query: 14 EIVESVRKGEKCLRPNLSELTCEEEVTAIMKRCWNEDPSER 54
E++E + +G RP + C +EV IM CW +P +R
Sbjct: 233 EVIECITQGRVLERPRV----CPKEVYDIMLGCWQREPQQR 269
>gnl|CDD|173652 cd05100, PTKc_FGFR3, Catalytic domain of the Protein Tyrosine
Kinase, Fibroblast Growth Factor Receptor 3. Protein
Tyrosine Kinase (PTK) family; Fibroblast Growth Factor
Receptor 3 (FGFR3); catalytic (c) domain. The PTKc
family is part of a larger superfamily that includes the
catalytic domains of other kinases such as protein
serine/threonine kinases, RIO kinases, and
phosphoinositide 3-kinase (PI3K). PTKs catalyze the
transfer of the gamma-phosphoryl group from ATP to
tyrosine (tyr) residues in protein substrates. FGFR3 is
part of the FGFR subfamily, which are receptor tyr
kinases (RTKs) containing an extracellular
ligand-binding region with three immunoglobulin-like
domains, a transmembrane segment, and an intracellular
catalytic domain. The binding of FGFRs to their ligands,
the FGFs, results in receptor dimerization and
activation, and intracellular signaling. The binding of
FGFs to FGFRs is promiscuous, in that a receptor may be
activated by several ligands and a ligand may bind to
more that one type of receptor. Many FGFR3 splice
variants have been reported with the IIIb and IIIc
isoforms being the predominant forms. FGFR3 IIIc is the
isoform expressed in chondrocytes, the cells affected in
dwarfism, while IIIb is expressed in epithelial cells.
FGFR3 ligands include FGF1, FGF2, FGF4, FGF8, FGF9, and
FGF23. It is a negative regulator of long bone growth.
In the cochlear duct and in the lens, FGFR3 is involved
in differentiation while it appears to have a role in
cell proliferation in epithelial cells. Germline
mutations in FGFR3 are associated with skeletal
disorders including several forms of dwarfism. Some
missense mutations are associated with multiple myeloma
and carcinomas of the bladder and cervix. Overexpression
of FGFR3 is found in thyroid carcinoma.
Length = 334
Score = 35.0 bits (80), Expect = 0.004
Identities = 15/47 (31%), Positives = 27/47 (57%), Gaps = 4/47 (8%)
Query: 60 EIVESVRKGEKCLRPSLSELTCEEEVTAIMKRCWNEDPSERPDFTTL 106
E+ + +++G + +P+ C E+ IM+ CW+ PS+RP F L
Sbjct: 244 ELFKLLKEGHRMDKPA----NCTHELYMIMRECWHAVPSQRPTFKQL 286
Score = 33.5 bits (76), Expect = 0.013
Identities = 14/45 (31%), Positives = 26/45 (57%), Gaps = 4/45 (8%)
Query: 13 DEIVESVRKGEKCLRPNLSELTCEEEVTAIMKRCWNEDPSERPDF 57
+E+ + +++G + +P C E+ IM+ CW+ PS+RP F
Sbjct: 243 EELFKLLKEGHRMDKP----ANCTHELYMIMRECWHAVPSQRPTF 283
>gnl|CDD|133246 cd05115, PTKc_Zap-70, Catalytic domain of the Protein Tyrosine
Kinase, Zeta-chain-associated protein of 70kDa. Protein
Tyrosine Kinase (PTK) family; Zeta-chain-associated
protein of 70kDa (Zap-70); catalytic (c) domain. The
PTKc family is part of a larger superfamily that
includes the catalytic domains of other kinases such as
protein serine/threonine kinases, RIO kinases, and
phosphoinositide 3-kinase (PI3K). PTKs catalyze the
transfer of the gamma-phosphoryl group from ATP to
tyrosine (tyr) residues in protein substrates. Zap-70 is
a member of the Syk subfamily of kinases, which are
cytoplasmic (or nonreceptor) tyr kinases containing two
Src homology 2 (SH2) domains N-terminal to the catalytic
tyr kinase domain. Zap-70 is primarily expressed in
T-cells and NK cells, and is a crucial component in
T-cell receptor (TCR) signaling. Zap-70 binds the
phosphorylated ITAM (immunoreceptor tyr activation
motif) sequences of the activated TCR zeta-chain through
its SH2 domains, leading to its phosphorylation and
activation. It then phosphorylates target proteins,
which propagate the signals to downstream pathways.
Zap-70 is hardly detected in normal peripheral B-cells,
but is present in some B-cell malignancies. It is used
as a diagnostic marker for chronic lymphocytic leukemia
(CLL) as it is associated with the more aggressive
subtype of the disease.
Length = 257
Score = 34.9 bits (80), Expect = 0.004
Identities = 14/53 (26%), Positives = 28/53 (52%), Gaps = 4/53 (7%)
Query: 59 TEIVESVRKGEKCLRPSLSELTCEEEVTAIMKRCWNEDPSERPDFTTLKAAIR 111
E++ + +G++ P+ C E+ A+MK CW +RP+F ++ +R
Sbjct: 205 PEVMSFIEQGKRLDCPA----ECPPEMYALMKDCWIYKWEDRPNFAKVEERMR 253
Score = 30.7 bits (69), Expect = 0.13
Identities = 13/46 (28%), Positives = 23/46 (50%), Gaps = 4/46 (8%)
Query: 14 EIVESVRKGEKCLRPNLSELTCEEEVTAIMKRCWNEDPSERPDFTT 59
E++ + +G++ P C E+ A+MK CW +RP+F
Sbjct: 206 EVMSFIEQGKRLDCPA----ECPPEMYALMKDCWIYKWEDRPNFAK 247
>gnl|CDD|173655 cd05110, PTKc_HER4, Catalytic domain of the Protein Tyrosine
Kinase, HER4. Protein Tyrosine Kinase (PTK) family;
HER4 (ErbB4); catalytic (c) domain. The PTKc family is
part of a larger superfamily that includes the catalytic
domains of other kinases such as protein
serine/threonine kinases, RIO kinases, and
phosphoinositide 3-kinase (PI3K). PTKs catalyze the
transfer of the gamma-phosphoryl group from ATP to
tyrosine (tyr) residues in protein substrates. HER4 is a
member of the EGFR (HER, ErbB) subfamily of proteins,
which are receptor tyr kinases (RTKs) containing an
extracellular EGF-related ligand-binding region, a
transmembrane helix, and a cytoplasmic region with a tyr
kinase domain and a regulatory C-terminal tail. Unlike
other tyr kinases, phosphorylation of the activation
loop of EGFR proteins is not critical to their
activation. Instead, they are activated by
ligand-induced dimerization, leading to the
phosphorylation of tyr residues in the C-terminal tail,
which serve as binding sites for downstream signaling
molecules. Ligands that bind HER4 fall into two groups,
the neuregulins (or heregulins) and some EGFR (HER1)
ligands including betacellulin, HBEGF, and epiregulin.
All four neuregulins (NRG1-4) interact with HER4. Upon
ligand binding, HER4 forms homo- or heterodimers with
other HER proteins. HER4 is essential in embryonic
development. It is implicated in mammary gland, cardiac,
and neural development. As a postsynaptic receptor of
NRG1, HER4 plays an important role in synaptic
plasticity and maturation. The impairment of NRG1/HER4
signaling may contribute to schizophrenia.
Length = 303
Score = 35.0 bits (80), Expect = 0.004
Identities = 18/58 (31%), Positives = 29/58 (50%), Gaps = 4/58 (6%)
Query: 58 TTEIVESVRKGEKCLRPSLSELTCEEEVTAIMKRCWNEDPSERPDFTTLKAAIRKLNK 115
T EI + + KGE+ +P + C +V +M +CW D RP F L A ++ +
Sbjct: 217 TREIPDLLEKGERLPQPPI----CTIDVYMVMVKCWMIDADSRPKFKELAAEFSRMAR 270
Score = 30.0 bits (67), Expect = 0.23
Identities = 17/53 (32%), Positives = 25/53 (47%), Gaps = 4/53 (7%)
Query: 14 EIVESVRKGEKCLRPNLSELTCEEEVTAIMKRCWNEDPSERPDFTTEIVESVR 66
EI + + KGE+ +P + C +V +M +CW D RP F E R
Sbjct: 219 EIPDLLEKGERLPQPPI----CTIDVYMVMVKCWMIDADSRPKFKELAAEFSR 267
>gnl|CDD|133180 cd05049, PTKc_Trk, Catalytic domain of the Protein Tyrosine
Kinases, Tropomyosin Related Kinases. Protein Tyrosine
Kinase (PTK) family; Tropomyosin Related Kinase (Trk)
subfamily; catalytic (c) domain. The Trk subfamily
consists of TrkA, TrkB, TrkC, and similar proteins. The
PTKc family is part of a larger superfamily that
includes the catalytic domains of other kinases such as
protein serine/threonine kinases, RIO kinases, and
phosphoinositide 3-kinase (PI3K). PTKs catalyze the
transfer of the gamma-phosphoryl group from ATP to
tyrosine (tyr) residues in protein substrates. Trk
subfamily members are receptor tyr kinases (RTKs)
containing an extracellular region with arrays of
leucine-rich motifs flanked by two cysteine-rich
clusters followed by two immunoglobulin-like domains, a
transmembrane segment, and an intracellular catalytic
domain. Binding to their ligands, the nerve growth
factor (NGF) family of neutrotrophins, leads to Trk
receptor oligomerization and activation of the catalytic
domain. Trk receptors are mainly expressed in the
peripheral and central nervous systems. They play
important roles in cell fate determination, neuronal
survival and differentiation, as well as in the
regulation of synaptic plasticity. Altered expression of
Trk receptors is associated with many human diseases.
Length = 280
Score = 34.7 bits (80), Expect = 0.005
Identities = 17/54 (31%), Positives = 26/54 (48%), Gaps = 4/54 (7%)
Query: 59 TEIVESVRKGEKCLRPSLSELTCEEEVTAIMKRCWNEDPSERPDFTTLKAAIRK 112
E++E + +G RP TC EV IM CW DP +R + + ++K
Sbjct: 231 EEVIECITQGRLLQRPR----TCPSEVYDIMLGCWKRDPQQRINIKDIHERLQK 280
Score = 34.7 bits (80), Expect = 0.005
Identities = 19/54 (35%), Positives = 28/54 (51%), Gaps = 5/54 (9%)
Query: 14 EIVESVRKGEKCLRPNLSELTCEEEVTAIMKRCWNEDPSERPDFTTEIVESVRK 67
E++E + +G RP TC EV IM CW DP +R + +I E ++K
Sbjct: 232 EVIECITQGRLLQRPR----TCPSEVYDIMLGCWKRDPQQRINI-KDIHERLQK 280
>gnl|CDD|133204 cd05073, PTKc_Hck, Catalytic domain of the Protein Tyrosine Kinase,
Hematopoietic cell kinase. Protein Tyrosine Kinase
(PTK) family; Hematopoietic cell kinase (Hck); catalytic
(c) domain. The PTKc family is part of a larger
superfamily that includes the catalytic domains of other
kinases such as protein serine/threonine kinases, RIO
kinases, and phosphoinositide 3-kinase (PI3K). PTKs
catalyze the transfer of the gamma-phosphoryl group from
ATP to tyrosine (tyr) residues in protein substrates.
Hck is a member of the Src subfamily of proteins, which
are cytoplasmic (or non-receptor) tyr kinases. Src
kinases contain an N-terminal SH4 domain with a
myristoylation site, followed by SH3 and SH2 domains, a
tyr kinase domain, and a regulatory C-terminal region
containing a conserved tyr. They are activated by
autophosphorylation at the tyr kinase domain, but are
negatively regulated by phosphorylation at the
C-terminal tyr by Csk (C-terminal Src Kinase). Src
proteins are involved in signaling pathways that
regulate cytokine and growth factor responses,
cytoskeleton dynamics, cell proliferation, survival, and
differentiation. Hck is present in myeloid and lymphoid
cells that play a role in the development of cancer. It
may be important in the oncogenic signaling of the
protein Tel-Abl, which induces a chronic myelogenous
leukemia (CML)-like disease. Hck also acts as a negative
regulator of granulocyte colony-stimulating factor
(G-CSF)-induced proliferation of granulocytic
precursors, suggesting a possible role in the
development of acute myeloid leukemia (AML). In
addition, Hck is essential in regulating the
degranulation of polymorphonuclear leukocytes (PMNs).
Genetic polymorphisms affect the expression level of
Hck, which affects PMN mediator release and influences
the development of chronic obstructive pulmonary disease
(COPD).
Length = 260
Score = 34.6 bits (79), Expect = 0.005
Identities = 17/53 (32%), Positives = 28/53 (52%), Gaps = 4/53 (7%)
Query: 58 TTEIVESVRKGEKCLRPSLSELTCEEEVTAIMKRCWNEDPSERPDFTTLKAAI 110
E++ ++ +G + RP C EE+ IM RCW P ERP F +++ +
Sbjct: 209 NPEVIRALERGYRMPRPE----NCPEELYNIMMRCWKNRPEERPTFEYIQSVL 257
Score = 34.2 bits (78), Expect = 0.008
Identities = 20/52 (38%), Positives = 29/52 (55%), Gaps = 6/52 (11%)
Query: 14 EIVESVRKGEKCLRPNLSELTCEEEVTAIMKRCWNEDPSERPDFTTEIVESV 65
E++ ++ +G + RP C EE+ IM RCW P ERP F E ++SV
Sbjct: 211 EVIRALERGYRMPRPE----NCPEELYNIMMRCWKNRPEERPTF--EYIQSV 256
>gnl|CDD|173635 cd05054, PTKc_VEGFR, Catalytic domain of the Protein Tyrosine
Kinases, Vascular Endothelial Growth Factor Receptors.
Protein Tyrosine Kinase (PTK) family; Vascular
Endothelial Growth Factor Receptor (VEGFR) subfamily;
catalytic (c) domain. The VEGFR subfamily consists of
VEGFR1 (Flt1), VEGFR2 (Flk1), VEGFR3 (Flt4), and similar
proteins. The PTKc family is part of a larger
superfamily that includes the catalytic domains of other
kinases such as protein serine/threonine kinases, RIO
kinases, and phosphoinositide 3-kinase (PI3K). PTKs
catalyze the transfer of the gamma-phosphoryl group from
ATP to tyrosine (tyr) residues in protein substrates.
VEGFR subfamily members are receptor tyr kinases (RTKs)
containing an extracellular ligand-binding region with
seven immunoglobulin (Ig)-like domains, a transmembrane
segment, and an intracellular catalytic domain. In
VEGFR3, the fifth Ig-like domain is replaced by a
disulfide bridge. The binding of VEGFRs to their
ligands, the VEGFs, leads to receptor dimerization,
activation, and intracellular signaling. There are five
VEGF ligands in mammals, which bind, in an overlapping
pattern to the three VEGFRs, which can form homo or
heterodimers. VEGFRs regulate the cardiovascular system.
They are critical for vascular development during
embryogenesis and blood vessel formation in adults. They
induce cellular functions common to other growth factor
receptors such as cell migration, survival, and
proliferation. VEGFR1 binds VEGFA, VEGFB, and placenta
growth factor (PLGF). It regulates monocyte and
macrophage migration, vascular permeability,
haematopoiesis, and the recruitment of haematopietic
progenitor cells from the bone marrow.
Length = 337
Score = 34.8 bits (80), Expect = 0.005
Identities = 10/24 (41%), Positives = 16/24 (66%)
Query: 83 EEVTAIMKRCWNEDPSERPDFTTL 106
E+ +IM CW+ +P +RP F+ L
Sbjct: 303 PEIYSIMLDCWHNNPEDRPTFSEL 326
Score = 33.3 bits (76), Expect = 0.018
Identities = 12/27 (44%), Positives = 19/27 (70%), Gaps = 1/27 (3%)
Query: 37 EEVTAIMKRCWNEDPSERPDFTTEIVE 63
E+ +IM CW+ +P +RP F +E+VE
Sbjct: 303 PEIYSIMLDCWHNNPEDRPTF-SELVE 328
>gnl|CDD|173649 cd05093, PTKc_TrkB, Catalytic domain of the Protein Tyrosine
Kinase, Tropomyosin Related Kinase B. Protein Tyrosine
Kinase (PTK) family; Tropomyosin Related Kinase B
(TrkB); catalytic (c) domain. The PTKc family is part of
a larger superfamily that includes the catalytic domains
of other kinases such as protein serine/threonine
kinases, RIO kinases, and phosphoinositide 3-kinase
(PI3K). PTKs catalyze the transfer of the
gamma-phosphoryl group from ATP to tyrosine (tyr)
residues in protein substrates. TrkB is a member of the
Trk subfamily of proteins, which are receptor tyr
kinases (RTKs) containing an extracellular region with
arrays of leucine-rich motifs flanked by two
cysteine-rich clusters followed by two
immunoglobulin-like domains, a transmembrane segment,
and an intracellular catalytic domain. Binding of TrkB
to its ligands, brain-derived neurotrophic factor (BDNF)
or neurotrophin 4 (NT4), results in receptor
oligomerization and activation of the catalytic domain.
TrkB is broadly expressed in the nervous system and in
some non-neural tissues. It plays important roles in
cell proliferation, differentiation, and survival.
BDNF/Trk signaling plays a key role in regulating
activity-dependent synaptic plasticity. TrkB also
contributes to protection against gp120-induced neuronal
cell death. TrkB overexpression is associated with poor
prognosis in neuroblastoma (NB) and other human cancers.
It acts as a suppressor of anoikis (detachment-induced
apoptosis) and contributes to tumor metastasis.
Length = 288
Score = 34.7 bits (79), Expect = 0.005
Identities = 16/56 (28%), Positives = 28/56 (50%), Gaps = 4/56 (7%)
Query: 60 EIVESVRKGEKCLRPSLSELTCEEEVTAIMKRCWNEDPSERPDFTTLKAAIRKLNK 115
E++E + +G RP TC +EV +M CW +P R + + + ++ L K
Sbjct: 230 EVIECITQGRVLQRPR----TCPKEVYDLMLGCWQREPHMRLNIKEIHSLLQNLAK 281
Score = 32.7 bits (74), Expect = 0.022
Identities = 14/44 (31%), Positives = 23/44 (52%), Gaps = 4/44 (9%)
Query: 13 DEIVESVRKGEKCLRPNLSELTCEEEVTAIMKRCWNEDPSERPD 56
+E++E + +G RP TC +EV +M CW +P R +
Sbjct: 229 NEVIECITQGRVLQRPR----TCPKEVYDLMLGCWQREPHMRLN 268
>gnl|CDD|133168 cd05036, PTKc_ALK_LTK, Catalytic domain of the Protein Tyrosine
Kinases, Anaplastic Lymphoma Kinase and Leukocyte
Tyrosine Kinase. Protein Tyrosine Kinase (PTK) family;
Anaplastic Lymphoma Kinase (ALK) and Leukocyte Tyrosine
(tyr) Kinase (LTK); catalytic (c) domain. The PTKc
family is part of a larger superfamily that includes the
catalytic domains of other kinases such as protein
serine/threonine kinases, RIO kinases, and
phosphoinositide 3-kinase (PI3K). PTKs catalyze the
transfer of the gamma-phosphoryl group from ATP to tyr
residues in protein substrates. ALK and LTK are orphan
receptor tyr kinases (RTKs) whose ligands are not yet
well-defined. RTKs contain an extracellular
ligand-binding domain, a transmembrane region, and an
intracellular tyr kinase domain. They are usually
activated through ligand binding, which causes
dimerization and autophosphorylation of the
intracellular tyr kinase catalytic domain. ALK appears
to play an important role in mammalian neural
development as well as visceral muscle differentiation
in Drosophila. ALK is aberrantly expressed as fusion
proteins, due to chromosomal translocations, in about
60% of anaplastic large cell lymphomas (ALCLs). ALK
fusion proteins are also found in rare cases of diffuse
large B cell lymphomas (DLBCLs). LTK is mainly expressed
in B lymphocytes and neuronal tissues. It is important
in cell proliferation and survival. Transgenic mice
expressing TLK display retarded growth and high
mortality rate. In addition, a polymorphism in mouse and
human LTK is implicated in the pathogenesis of systemic
lupus erythematosus.
Length = 277
Score = 34.7 bits (80), Expect = 0.006
Identities = 11/26 (42%), Positives = 14/26 (53%)
Query: 81 CEEEVTAIMKRCWNEDPSERPDFTTL 106
C V IM CW P +RP+F T+
Sbjct: 246 CPGPVYRIMTDCWQHTPEDRPNFATI 271
Score = 34.3 bits (79), Expect = 0.006
Identities = 13/29 (44%), Positives = 16/29 (55%), Gaps = 1/29 (3%)
Query: 35 CEEEVTAIMKRCWNEDPSERPDFTTEIVE 63
C V IM CW P +RP+F T I+E
Sbjct: 246 CPGPVYRIMTDCWQHTPEDRPNFAT-ILE 273
>gnl|CDD|133238 cd05107, PTKc_PDGFR_beta, Catalytic domain of the Protein Tyrosine
Kinase, Platelet Derived Growth Factor Receptor beta.
Protein Tyrosine Kinase (PTK) family; Platelet Derived
Growth Factor Receptor (PDGFR) beta; catalytic (c)
domain. The PTKc family is part of a larger superfamily
that includes the catalytic domains of other kinases
such as protein serine/threonine kinases, RIO kinases,
and phosphoinositide 3-kinase (PI3K). PTKs catalyze the
transfer of the gamma-phosphoryl group from ATP to
tyrosine (tyr) residues in protein substrates. PDGFR
beta is a receptor tyr kinase (RTK) containing an
extracellular ligand-binding region with five
immunoglobulin-like domains, a transmembrane segment,
and an intracellular catalytic domain. The binding to
its ligands, the PDGFs, leads to receptor dimerization,
trans phosphorylation and activation, and intracellular
signaling. PDGFR beta forms homodimers or heterodimers
with PDGFR alpha, depending on the nature of the PDGF
ligand. PDGF-BB and PDGF-DD induce PDGFR beta
homodimerization. PDGFR signaling plays many roles in
normal embryonic development and adult physiology. PDGFR
beta signaling leads to a variety of cellular effects
including the stimulation of cell growth and chemotaxis,
as well as the inhibition of apoptosis and GAP
junctional communication. It is critical in normal
angiogenesis as it is involved in the recruitment of
pericytes and smooth muscle cells essential for vessel
stability. Aberrant PDGFR beta expression is associated
with some human cancers. The continuously-active fusion
proteins of PDGFR beta with COL1A1 and TEL are
associated with dermatofibrosarcoma protuberans (DFSP)
and a subset of chronic myelomonocytic leukemia (CMML),
respectively.
Length = 401
Score = 34.6 bits (79), Expect = 0.006
Identities = 13/43 (30%), Positives = 26/43 (60%), Gaps = 4/43 (9%)
Query: 64 SVRKGEKCLRPSLSELTCEEEVTAIMKRCWNEDPSERPDFTTL 106
++++G + +P+ + +E+ IM++CW E RPDF+ L
Sbjct: 354 AIKRGYRMAKPAHAS----DEIYEIMQKCWEEKFEIRPDFSQL 392
Score = 32.7 bits (74), Expect = 0.025
Identities = 12/48 (25%), Positives = 27/48 (56%), Gaps = 4/48 (8%)
Query: 11 LRDEIVESVRKGEKCLRPNLSELTCEEEVTAIMKRCWNEDPSERPDFT 58
+ ++ ++++G + +P + +E+ IM++CW E RPDF+
Sbjct: 347 MNEQFYNAIKRGYRMAKPAHAS----DEIYEIMQKCWEEKFEIRPDFS 390
>gnl|CDD|133240 cd05109, PTKc_HER2, Catalytic domain of the Protein Tyrosine
Kinase, HER2. Protein Tyrosine Kinase (PTK) family;
HER2 (ErbB2, HER2/neu); catalytic (c) domain. The PTKc
family is part of a larger superfamily that includes the
catalytic domains of other kinases such as protein
serine/threonine kinases, RIO kinases, and
phosphoinositide 3-kinase (PI3K). PTKs catalyze the
transfer of the gamma-phosphoryl group from ATP to
tyrosine (tyr) residues in protein substrates. HER2 is a
member of the EGFR (HER, ErbB) subfamily of proteins,
which are receptor tyr kinases (RTKs) containing an
extracellular EGF-related ligand-binding region, a
transmembrane helix, and a cytoplasmic region with a tyr
kinase domain and a regulatory C-terminal tail. Unlike
other tyr kinases, phosphorylation of the activation
loop of EGFR proteins is not critical to their
activation. Instead, they are activated by
ligand-induced dimerization, leading to the
phosphorylation of tyr residues in the C-terminal tail,
which serve as binding sites for downstream signaling
molecules. HER2 does not bind to any known EGFR
subfamily ligands, but contributes to the kinase
activity of all possible heterodimers. It acts as the
preferred partner with other ligand-bound EGFR proteins
and functions as a signal amplifier, with the HER2-HER3
heterodimer being the most potent pair in mitogenic
signaling. HER2 plays an important role in cell
development, proliferation, survival and motility.
Overexpression of HER2 results in its activation and
downstream signaling, even in the absence of ligand.
HER2 overexpression, mainly due to gene amplification,
has been shown in a variety of human cancers. Its role
in breast cancer is especially well-documented. HER2 is
up-regulated in about 25% of breast tumors and is
associated with increases in tumor aggressiveness,
recurrence and mortality. HER2 is a target for
monoclonal antibodies and small molecule inhibitors,
which are being developed as treatments for cancer. The
first humanized antibody approved for clinical use is
Trastuzumab (Herceptin), which is being used in
combination with other therapies to improve the survival
rates of patients with HER2-overexpressing breast
cancer.
Length = 279
Score = 34.6 bits (79), Expect = 0.006
Identities = 17/47 (36%), Positives = 24/47 (51%), Gaps = 4/47 (8%)
Query: 60 EIVESVRKGEKCLRPSLSELTCEEEVTAIMKRCWNEDPSERPDFTTL 106
EI + + KGE+ +P + C +V IM +CW D RP F L
Sbjct: 219 EIPDLLEKGERLPQPPI----CTIDVYMIMVKCWMIDSECRPRFREL 261
Score = 33.4 bits (76), Expect = 0.014
Identities = 18/53 (33%), Positives = 26/53 (49%), Gaps = 4/53 (7%)
Query: 14 EIVESVRKGEKCLRPNLSELTCEEEVTAIMKRCWNEDPSERPDFTTEIVESVR 66
EI + + KGE+ +P + C +V IM +CW D RP F + E R
Sbjct: 219 EIPDLLEKGERLPQPPI----CTIDVYMIMVKCWMIDSECRPRFRELVDEFSR 267
>gnl|CDD|133165 cd05033, PTKc_EphR, Catalytic domain of Ephrin Receptor Protein
Tyrosine Kinases. Protein Tyrosine Kinase (PTK) family;
Ephrin Receptor (EphR) subfamily; catalytic (c) domain.
The PTKc family is part of a larger superfamily that
includes the catalytic domains of other kinases such as
protein serine/threonine kinases, RIO kinases, and
phosphoinositide 3-kinase (PI3K). PTKs catalyze the
transfer of the gamma-phosphoryl group from ATP to
tyrosine (tyr) residues in protein substrates. EphRs
comprise the largest subfamily of receptor tyr kinases
(RTKs). They can be classified into two classes (EphA
and EphB), according to their extracellular sequences,
which largely correspond to binding preferences for
either GPI-anchored ephrin-A ligands or transmembrane
ephrin-B ligands. Vertebrates have ten EphA and six EhpB
receptors, which display promiscuous ligand interactions
within each class. EphRs contain an ephrin binding
domain and two fibronectin repeats extracellularly, a
transmembrane segment, and a cytoplasmic tyr kinase
domain. Binding of the ephrin ligand to EphR requires
cell-cell contact since both are anchored to the plasma
membrane. This allows ephrin/EphR dimers to form,
leading to the activation of the intracellular tyr
kinase domain. The resulting downstream signals occur
bidirectionally in both EphR-expressing cells (forward
signaling) and ephrin-expressing cells (reverse
signaling). The main effect of ephrin/EphR interaction
is cell-cell repulsion or adhesion. Ephrin/EphR
signaling is important in neural development and
plasticity, cell morphogenesis and proliferation,
cell-fate determination, embryonic development, tissue
patterning, and angiogenesis.
Length = 266
Score = 33.9 bits (78), Expect = 0.009
Identities = 17/64 (26%), Positives = 34/64 (53%), Gaps = 7/64 (10%)
Query: 53 ERP--DFTT-EIVESVRKGEKCLRPSLSELTCEEEVTAIMKRCWNEDPSERPDFTTLKAA 109
ERP D + +++++V G + P + C + +M CW +D +ERP F+ + +
Sbjct: 206 ERPYWDMSNQDVIKAVEDGYRLPPP----MDCPSALYQLMLDCWQKDRNERPTFSQIVST 261
Query: 110 IRKL 113
+ K+
Sbjct: 262 LDKM 265
Score = 31.2 bits (71), Expect = 0.095
Identities = 11/28 (39%), Positives = 17/28 (60%), Gaps = 1/28 (3%)
Query: 35 CEEEVTAIMKRCWNEDPSERPDFTTEIV 62
C + +M CW +D +ERP F ++IV
Sbjct: 233 CPSALYQLMLDCWQKDRNERPTF-SQIV 259
>gnl|CDD|133201 cd05070, PTKc_Fyn_Yrk, Catalytic domain of the Protein Tyrosine
Kinases, Fyn and Yrk. Protein Tyrosine Kinase (PTK)
family; Fyn and Yrk kinases; catalytic (c) domain. The
PTKc family is part of a larger superfamily that
includes the catalytic domains of other kinases such as
protein serine/threonine kinases, RIO kinases, and
phosphoinositide 3-kinase (PI3K). PTKs catalyze the
transfer of the gamma-phosphoryl group from ATP to
tyrosine (tyr) residues in protein substrates. Fyn and
Yrk are members of the Src subfamily of proteins, which
are cytoplasmic (or non-receptor) tyr kinases. Src
kinases contain an N-terminal SH4 domain with a
myristoylation site, followed by SH3 and SH2 domains, a
tyr kinase domain, and a regulatory C-terminal region
containing a conserved tyr. They are activated by
autophosphorylation at the tyr kinase domain, but are
negatively regulated by phosphorylation at the
C-terminal tyr by Csk (C-terminal Src Kinase). Src
proteins are involved in signaling pathways that
regulate cytokine and growth factor responses,
cytoskeleton dynamics, cell proliferation, survival, and
differentiation. Fyn, together with Lck, plays a
critical role in T-cell signal transduction by
phosphorylating ITAM (immunoreceptor tyr activation
motif) sequences on T-cell receptors, ultimately leading
to the proliferation and differentiation of T-cells. In
addition, Fyn is involved in the myelination of neurons,
and is implicated in Alzheimer's and Parkinson's
diseases. Yrk has been detected only in chickens. It is
primarily found in neuronal and epithelial cells and in
macrophages. It may play a role in inflammation and in
response to injury.
Length = 260
Score = 33.8 bits (77), Expect = 0.010
Identities = 16/49 (32%), Positives = 26/49 (53%), Gaps = 4/49 (8%)
Query: 60 EIVESVRKGEKCLRPSLSELTCEEEVTAIMKRCWNEDPSERPDFTTLKA 108
E++E V +G + P C + +M +CW +DP ERP F L++
Sbjct: 211 EVLEQVERGYRMPCPQ----DCPISLHELMLQCWKKDPEERPTFEYLQS 255
Score = 32.7 bits (74), Expect = 0.028
Identities = 15/44 (34%), Positives = 23/44 (52%), Gaps = 4/44 (9%)
Query: 14 EIVESVRKGEKCLRPNLSELTCEEEVTAIMKRCWNEDPSERPDF 57
E++E V +G + P C + +M +CW +DP ERP F
Sbjct: 211 EVLEQVERGYRMPCPQ----DCPISLHELMLQCWKKDPEERPTF 250
>gnl|CDD|133202 cd05071, PTKc_Src, Catalytic domain of the Protein Tyrosine Kinase,
Src. Protein Tyrosine Kinase (PTK) family; Src kinase;
catalytic (c) domain. The PTKc family is part of a
larger superfamily that includes the catalytic domains
of other kinases such as protein serine/threonine
kinases, RIO kinases, and phosphoinositide 3-kinase
(PI3K). PTKs catalyze the transfer of the
gamma-phosphoryl group from ATP to tyrosine (tyr)
residues in protein substrates. Src (or c-Src) is a
cytoplasmic (or non-receptor) tyr kinase, containing an
N-terminal SH4 domain with a myristoylation site,
followed by SH3 and SH2 domains, a tyr kinase domain,
and a regulatory C-terminal region with a conserved tyr.
It is activated by autophosphorylation at the tyr kinase
domain, and is negatively regulated by phosphorylation
at the C-terminal tyr by Csk (C-terminal Src Kinase).
c-Src is the vertebrate homolog of the oncogenic protein
(v-Src) from Rous sarcoma virus. Together with other Src
subfamily proteins, it is involved in signaling pathways
that regulate cytokine and growth factor responses,
cytoskeleton dynamics, cell proliferation, survival, and
differentiation. Src also play a role in regulating cell
adhesion, invasion, and motility in cancer cells and
tumor vasculature, contributing to cancer progression
and metastasis. Elevated levels of Src kinase activity
have been reported in a variety of human cancers.
Several inhibitors of Src have been developed as
anti-cancer drugs. Src is also implicated in acute
inflammatory responses and osteoclast function.
Length = 262
Score = 33.9 bits (77), Expect = 0.010
Identities = 16/49 (32%), Positives = 27/49 (55%), Gaps = 4/49 (8%)
Query: 60 EIVESVRKGEKCLRPSLSELTCEEEVTAIMKRCWNEDPSERPDFTTLKA 108
E+++ V +G + P C E + +M +CW ++P ERP F L+A
Sbjct: 211 EVLDQVERGYRMPCPP----ECPESLHDLMCQCWRKEPEERPTFEYLQA 255
Score = 30.4 bits (68), Expect = 0.14
Identities = 14/44 (31%), Positives = 24/44 (54%), Gaps = 4/44 (9%)
Query: 14 EIVESVRKGEKCLRPNLSELTCEEEVTAIMKRCWNEDPSERPDF 57
E+++ V +G + P C E + +M +CW ++P ERP F
Sbjct: 211 EVLDQVERGYRMPCPP----ECPESLHDLMCQCWRKEPEERPTF 250
>gnl|CDD|173647 cd05091, PTKc_Ror2, Catalytic domain of the Protein Tyrosine
Kinase, Receptor tyrosine kinase-like Orphan Receptor 2.
Protein Tyrosine Kinase (PTK) family; Receptor tyrosine
kinase-like Orphan Receptor 2 (Ror2); catalytic (c)
domain. The PTKc family is part of a larger superfamily
that includes the catalytic domains of other kinases
such as protein serine/threonine kinases, RIO kinases,
and phosphoinositide 3-kinase (PI3K). PTKs catalyze the
transfer of the gamma-phosphoryl group from ATP to
tyrosine (tyr) residues in protein substrates. Ror
proteins are orphan receptor tyr kinases (RTKs)
containing an extracellular region with
immunoglobulin-like, cysteine-rich, and kringle domains,
a transmembrane segment, and an intracellular catalytic
domain. Ror RTKs are unrelated to the nuclear receptor
subfamily called retinoid-related orphan receptors
(RORs). RTKs are usually activated through ligand
binding, which causes dimerization and
autophosphorylation of the intracellular tyr kinase
catalytic domain. Ror2 plays important roles in skeletal
and heart formation. Ror2-deficient mice show widespread
bone abnormalities, ventricular defects in the heart,
and respiratory dysfunction. Mutations in human Ror2
result in two different bone development genetic
disorders, recessive Robinow syndrome and brachydactyly
type B. Ror2 is also implicated in neural development.
Length = 283
Score = 33.8 bits (77), Expect = 0.011
Identities = 16/52 (30%), Positives = 25/52 (48%), Gaps = 4/52 (7%)
Query: 60 EIVESVRKGEKCLRPSLSELTCEEEVTAIMKRCWNEDPSERPDFTTLKAAIR 111
+++E +R + P C V +M CWNE PS RP F + + +R
Sbjct: 234 DVIEMIRNRQVLPCPD----DCPAWVYTLMLECWNEFPSRRPRFKDIHSRLR 281
Score = 32.7 bits (74), Expect = 0.025
Identities = 15/44 (34%), Positives = 22/44 (50%), Gaps = 4/44 (9%)
Query: 14 EIVESVRKGEKCLRPNLSELTCEEEVTAIMKRCWNEDPSERPDF 57
+++E +R + P+ C V +M CWNE PS RP F
Sbjct: 234 DVIEMIRNRQVLPCPD----DCPAWVYTLMLECWNEFPSRRPRF 273
>gnl|CDD|133195 cd05064, PTKc_EphR_A10, Catalytic domain of the Protein Tyrosine
Kinase, Ephrin Receptor A10. Protein Tyrosine Kinase
(PTK) family; Ephrin Receptor (EphR) subfamily; EphA10
receptor; catalytic (c) domain. The PTKc family is part
of a larger superfamily that includes the catalytic
domains of other kinases such as protein
serine/threonine kinases, RIO kinases, and
phosphoinositide 3-kinase (PI3K). PTKs catalyze the
transfer of the gamma-phosphoryl group from ATP to
tyrosine (tyr) residues in protein substrates. EphRs
comprise the largest subfamily of receptor tyr kinases
(RTKs). In general, class EphA receptors bind
GPI-anchored ephrin-A ligands. There are ten vertebrate
EphA receptors (EphA1-10), which display promiscuous
interactions with six ephrin-A ligands. EphRs contain an
ephrin binding domain and two fibronectin repeats
extracellularly, a transmembrane segment, and a
cytoplasmic tyr kinase domain. Binding of the ephrin
ligand to EphR requires cell-cell contact since both are
anchored to the plasma membrane. The resulting
downstream signals occur bidirectionally in both
EphR-expressing cells (forward signaling) and
ephrin-expressing cells (reverse signaling). EphA10,
which contains an inactive tyr kinase domain, may
function to attenuate signals of co-clustered active
receptors. EphA10 is mainly expressed in the testis.
Ephrin/EphR interaction results in cell-cell repulsion
or adhesion, making it important in neural development
and plasticity, cell morphogenesis, cell-fate
determination, embryonic development, tissue patterning,
and angiogenesis.
Length = 266
Score = 33.4 bits (76), Expect = 0.013
Identities = 9/33 (27%), Positives = 18/33 (54%)
Query: 81 CEEEVTAIMKRCWNEDPSERPDFTTLKAAIRKL 113
C + +M CW ++ ERP F+ + + + K+
Sbjct: 233 CPNLLHQLMLDCWQKERGERPRFSQIHSILSKM 265
Score = 30.7 bits (69), Expect = 0.14
Identities = 8/24 (33%), Positives = 13/24 (54%)
Query: 35 CEEEVTAIMKRCWNEDPSERPDFT 58
C + +M CW ++ ERP F+
Sbjct: 233 CPNLLHQLMLDCWQKERGERPRFS 256
>gnl|CDD|173636 cd05057, PTKc_EGFR_like, Catalytic domain of Epidermal Growth
Factor Receptor-like Protein Tyrosine Kinases. Protein
Tyrosine Kinase (PTK) family; Epidermal Growth Factor
Receptor (EGFR) subfamily; catalytic (c) domain. EGFR
(HER, ErbB) subfamily members include EGFR (HER1,
ErbB1), HER2 (ErbB2), HER3 (ErbB3), HER4 (ErbB4), and
similar proteins. The PTKc family is part of a larger
superfamily that includes the catalytic domains of other
kinases such as protein serine/threonine kinases, RIO
kinases, and phosphoinositide 3-kinase (PI3K). PTKs
catalyze the transfer of the gamma-phosphoryl group from
ATP to tyrosine (tyr) residues in protein substrates.
The EGFR proteins are receptor tyr kinases (RTKs)
containing an extracellular EGF-related ligand-binding
region, a transmembrane helix, and a cytoplasmic region
with a tyr kinase domain and a regulatory C-terminal
tail. Unlike other tyr kinases, phosphorylation of the
activation loop of EGFR proteins is not critical to
their activation. Instead, they are activated by
ligand-induced dimerization, resulting in the
phosphorylation of tyr residues in the C-terminal tail,
which serve as binding sites for downstream signaling
molecules. Collectively, they can recognize a variety of
ligands including EGF, TGFalpha, and neuregulins, among
others. All four subfamily members can form homo- or
heterodimers. HER3 contains an impaired kinase domain
and depends on its heterodimerization partner for
activation. EGFR subfamily members are involved in
signaling pathways leading to a broad range of cellular
responses including cell proliferation, differentiation,
migration, growth inhibition, and apoptosis. Gain of
function alterations, through their overexpression,
deletions, or point mutations in their kinase domains,
have been implicated in various cancers. These receptors
are targets of many small molecule inhibitors and
monoclonal antibodies used in cancer therapy.
Length = 279
Score = 33.2 bits (76), Expect = 0.015
Identities = 15/49 (30%), Positives = 23/49 (46%), Gaps = 4/49 (8%)
Query: 58 TTEIVESVRKGEKCLRPSLSELTCEEEVTAIMKRCWNEDPSERPDFTTL 106
EI + + KGE+ +P C +V ++ +CW D RP F L
Sbjct: 217 AVEIPDLLEKGERLPQPP----ICTIDVYMVLVKCWMIDAESRPTFKEL 261
Score = 31.6 bits (72), Expect = 0.065
Identities = 14/44 (31%), Positives = 22/44 (50%), Gaps = 4/44 (9%)
Query: 14 EIVESVRKGEKCLRPNLSELTCEEEVTAIMKRCWNEDPSERPDF 57
EI + + KGE+ +P C +V ++ +CW D RP F
Sbjct: 219 EIPDLLEKGERLPQPP----ICTIDVYMVLVKCWMIDAESRPTF 258
>gnl|CDD|173632 cd05051, PTKc_DDR, Catalytic domain of the Protein Tyrosine
Kinases, Discoidin Domain Receptors. Protein Tyrosine
Kinase (PTK) family; Discoidin Domain Receptor (DDR)
subfamily; catalytic (c) domain. The DDR subfamily
consists of homologs of mammalian DDR1, DDR2, and
similar proteins. The PTKc family is part of a larger
superfamily that includes the catalytic domains of other
kinases such as protein serine/threonine kinases, RIO
kinases, and phosphoinositide 3-kinase (PI3K). PTKs
catalyze the transfer of the gamma-phosphoryl group from
ATP to tyrosine (tyr) residues in protein substrates.
DDR subfamily members are receptor tyr kinases (RTKs)
containing an extracellular discoidin homology domain, a
transmembrane segment, an extended juxtamembrane region,
and an intracellular catalytic domain. The binding of
the ligand, collagen, to DDRs results in a slow but
sustained receptor activation. DDRs regulate cell
adhesion, proliferation, and extracellular matrix
remodeling. They have been linked to a variety of human
cancers including breast, colon, ovarian, brain, and
lung. There is no evidence showing that DDRs act as
transforming oncogenes. They are more likely to play a
role in the regulation of tumor growth and metastasis.
Length = 296
Score = 33.1 bits (76), Expect = 0.018
Identities = 8/26 (30%), Positives = 14/26 (53%)
Query: 81 CEEEVTAIMKRCWNEDPSERPDFTTL 106
C +++ +M CW D +RP F +
Sbjct: 265 CPKDIYELMLECWRRDEEDRPTFREI 290
Score = 32.7 bits (75), Expect = 0.023
Identities = 8/23 (34%), Positives = 13/23 (56%)
Query: 35 CEEEVTAIMKRCWNEDPSERPDF 57
C +++ +M CW D +RP F
Sbjct: 265 CPKDIYELMLECWRRDEEDRPTF 287
>gnl|CDD|173769 cd08229, STKc_Nek7, Catalytic domain of the Protein
Serine/Threonine Kinase, Never In Mitosis gene A-related
kinase 7. Serine/Threonine Kinases (STKs), Never In
Mitosis gene A (NIMA)-related kinase 7 (Nek7) subfamily,
catalytic (c) domain. STKs catalyze the transfer of the
gamma-phosphoryl group from ATP to serine/threonine
residues on protein substrates. The Nek7 subfamily is
one of a family of 11 different Neks (Nek1-11) that are
involved in cell cycle control. The Nek family is part
of a larger superfamily that includes the catalytic
domains of other protein STKs, protein tyrosine kinases,
RIO kinases, aminoglycoside phosphotransferase, choline
kinase, and phosphoinositide 3-kinase. Nek7 is required
for mitotic spindle formation and cytokinesis. It is
enriched in the centrosome and is critical for
microtubule nucleation. Nek7 is activated by Nek9 during
mitosis, and may regulate the p70 ribosomal S6 kinase.
Length = 267
Score = 33.1 bits (75), Expect = 0.021
Identities = 15/49 (30%), Positives = 26/49 (53%)
Query: 66 RKGEKCLRPSLSELTCEEEVTAIMKRCWNEDPSERPDFTTLKAAIRKLN 114
+K E+C P L EE+ ++ C N DP +RPD T + ++++
Sbjct: 218 KKIEQCDYPPLPSDHYSEELRQLVNMCINPDPEKRPDITYVYDVAKRMH 266
Score = 32.3 bits (73), Expect = 0.039
Identities = 15/39 (38%), Positives = 21/39 (53%)
Query: 20 RKGEKCLRPNLSELTCEEEVTAIMKRCWNEDPSERPDFT 58
+K E+C P L EE+ ++ C N DP +RPD T
Sbjct: 218 KKIEQCDYPPLPSDHYSEELRQLVNMCINPDPEKRPDIT 256
>gnl|CDD|133232 cd05101, PTKc_FGFR2, Catalytic domain of the Protein Tyrosine
Kinase, Fibroblast Growth Factor Receptor 2. Protein
Tyrosine Kinase (PTK) family; Fibroblast Growth Factor
Receptor 2 (FGFR2); catalytic (c) domain. The PTKc
family is part of a larger superfamily that includes the
catalytic domains of other kinases such as protein
serine/threonine kinases, RIO kinases, and
phosphoinositide 3-kinase (PI3K). PTKs catalyze the
transfer of the gamma-phosphoryl group from ATP to
tyrosine (tyr) residues in protein substrates. FGFR2 is
part of the FGFR subfamily, which are receptor tyr
kinases (RTKs) containing an extracellular
ligand-binding region with three immunoglobulin-like
domains, a transmembrane segment, and an intracellular
catalytic domain. The binding of FGFRs to their ligands,
the FGFs, results in receptor dimerization and
activation, and intracellular signaling. The binding of
FGFs to FGFRs is promiscuous, in that a receptor may be
activated by several ligands and a ligand may bind to
more that one type of receptor. There are many splice
variants of FGFR2 which show differential expression and
binding to FGF ligands. Disruption of either FGFR2 or
FGFR2b is lethal in mice, due to defects in the placenta
or severe impairment of tissue development including
lung, limb, and thyroid, respectively. Disruption of
FGFR2c in mice results in defective bone and skull
development. Genetic alterations of FGFR2 are associated
with many human skeletal disorders including Apert
syndrome, Crouzon syndrome, Jackson-Weiss syndrome, and
Pfeiffer syndrome.
Length = 304
Score = 32.3 bits (73), Expect = 0.036
Identities = 14/47 (29%), Positives = 26/47 (55%), Gaps = 4/47 (8%)
Query: 60 EIVESVRKGEKCLRPSLSELTCEEEVTAIMKRCWNEDPSERPDFTTL 106
E+ + +++G + +P+ C E+ +M+ CW+ PS RP F L
Sbjct: 247 ELFKLLKEGHRMDKPA----NCTNELYMMMRDCWHAIPSHRPTFKQL 289
Score = 31.1 bits (70), Expect = 0.096
Identities = 15/55 (27%), Positives = 31/55 (56%), Gaps = 5/55 (9%)
Query: 13 DEIVESVRKGEKCLRPNLSELTCEEEVTAIMKRCWNEDPSERPDFTTEIVESVRK 67
+E+ + +++G + +P C E+ +M+ CW+ PS RP F ++VE + +
Sbjct: 246 EELFKLLKEGHRMDKP----ANCTNELYMMMRDCWHAIPSHRPTF-KQLVEDLDR 295
>gnl|CDD|133233 cd05102, PTKc_VEGFR3, Catalytic domain of the Protein Tyrosine
Kinase, Vascular Endothelial Growth Factor Receptor 3.
Protein Tyrosine Kinase (PTK) family; Vascular
Endothelial Growth Factor Receptor 3 (VEGFR3); catalytic
(c) domain. The PTKc family is part of a larger
superfamily that includes the catalytic domains of other
kinases such as protein serine/threonine kinases, RIO
kinases, and phosphoinositide 3-kinase (PI3K). PTKs
catalyze the transfer of the gamma-phosphoryl group from
ATP to tyrosine (tyr) residues in protein substrates.
VEGFR3 (or Flt4) is a member of the VEGFR subfamily of
proteins, which are receptor tyr kinases (RTKs)
containing an extracellular ligand-binding region with
seven immunoglobulin (Ig)-like domains, a transmembrane
segment, and an intracellular catalytic domain. In
VEGFR3, the fifth Ig-like domain is replaced by a
disulfide bridge. The binding of VEGFRs to their
ligands, the VEGFs, leads to receptor dimerization,
activation, and intracellular signaling. VEGFR3
preferentially binds the ligands VEGFC and VEGFD. VEGFR3
is essential for lymphatic endothelial cell (EC)
development and function. It has been shown to regulate
adaptive immunity during corneal transplantation. VEGFR3
is upregulated on blood vascular ECs in pathological
conditions such as vascular tumors and the periphery of
solid tumors. It plays a role in cancer progression and
lymph node metastasis. Missense mutations in the VEGFR3
gene are associated with primary human lymphedema.
Length = 338
Score = 31.5 bits (71), Expect = 0.067
Identities = 16/53 (30%), Positives = 26/53 (49%), Gaps = 5/53 (9%)
Query: 11 LRDEIVESVRKGEKCLRPNLSELTCEEEVTAIMKRCWNEDPSERPDFTTEIVE 63
+ +E + ++ G + P + E+ IM CW DP ERP F + +VE
Sbjct: 282 INEEFCQRLKDGTRMRAPENAT----PEIYRIMLACWQGDPKERPTF-SALVE 329
Score = 31.1 bits (70), Expect = 0.094
Identities = 15/47 (31%), Positives = 22/47 (46%), Gaps = 4/47 (8%)
Query: 60 EIVESVRKGEKCLRPSLSELTCEEEVTAIMKRCWNEDPSERPDFTTL 106
E + ++ G + P + E+ IM CW DP ERP F+ L
Sbjct: 285 EFCQRLKDGTRMRAPENAT----PEIYRIMLACWQGDPKERPTFSAL 327
>gnl|CDD|133228 cd05097, PTKc_DDR_like, Catalytic domain of Discoidin Domain
Receptor-like Protein Tyrosine Kinases. Protein
Tyrosine Kinase (PTK) family; Discoidin Domain Receptor
(DDR)-like proteins; catalytic (c) domain. The PTKc
family is part of a larger superfamily that includes the
catalytic domains of other kinases such as protein
serine/threonine kinases, RIO kinases, and
phosphoinositide 3-kinase (PI3K). PTKs catalyze the
transfer of the gamma-phosphoryl group from ATP to
tyrosine (tyr) residues in protein substrates. DDR-like
proteins are members of the DDR subfamily, which are
receptor tyr kinases (RTKs) containing an extracellular
discoidin homology domain, a transmembrane segment, an
extended juxtamembrane region, and an intracellular
catalytic domain. The binding of the ligand, collagen,
to DDRs results in a slow but sustained receptor
activation. DDRs regulate cell adhesion, proliferation,
and extracellular matrix remodeling. They have been
linked to a variety of human cancers including breast,
colon, ovarian, brain, and lung. There is no evidence
showing that DDRs act as transforming oncogenes. They
are more likely to play a role in the regulation of
tumor growth and metastasis.
Length = 295
Score = 31.5 bits (71), Expect = 0.075
Identities = 11/32 (34%), Positives = 17/32 (53%)
Query: 81 CEEEVTAIMKRCWNEDPSERPDFTTLKAAIRK 112
C V +M RCW+ D +RP F + +R+
Sbjct: 264 CPSPVFKLMMRCWSRDIKDRPTFNKIHHFLRE 295
Score = 28.8 bits (64), Expect = 0.61
Identities = 10/25 (40%), Positives = 13/25 (52%)
Query: 35 CEEEVTAIMKRCWNEDPSERPDFTT 59
C V +M RCW+ D +RP F
Sbjct: 264 CPSPVFKLMMRCWSRDIKDRPTFNK 288
>gnl|CDD|173656 cd05111, PTK_HER3, Pseudokinase domain of the Protein Tyrosine
Kinase, HER3. Protein Tyrosine Kinase (PTK) family;
HER3 (ErbB3); pseudokinase domain. The PTKc (catalytic
domain) family to which this subfamily belongs, is part
of a larger superfamily that includes the catalytic
domains of other kinases such as protein
serine/threonine kinases, RIO kinases, and
phosphoinositide 3-kinase (PI3K). PTKs catalyze the
transfer of the gamma-phosphoryl group from ATP to
tyrosine (tyr) residues in protein substrates. HER3 is a
member of the EGFR (HER, ErbB) subfamily of proteins,
which are receptor tyr kinases (RTKs) containing an
extracellular EGF-related ligand-binding region, a
transmembrane helix, and a cytoplasmic region with a tyr
kinase domain and a regulatory C-terminal tail. Unlike
other tyr kinases, phosphorylation of the activation
loop of EGFR proteins is not critical to their
activation. Instead, they are activated by
ligand-induced dimerization, leading to the
phosphorylation of tyr residues in the C-terminal tail,
which serve as binding sites for downstream signaling
molecules. HER3 binds the neuregulin ligands, NRG1 and
NRG2. HER3 contains an impaired tyr kinase domain and
relies on its heterodimerization partners for activity
following ligand binding. The HER2-HER3 heterodimer
constitutes a high affinity co-receptor capable of
potent mitogenic signaling. HER3 participates in a
signaling pathway involved in the proliferation,
survival, adhesion, and motility of tumor cells.
Length = 279
Score = 31.1 bits (70), Expect = 0.083
Identities = 18/56 (32%), Positives = 26/56 (46%), Gaps = 11/56 (19%)
Query: 51 PSERPDFTTEIVESVRKGEKCLRPSLSELTCEEEVTAIMKRCWNEDPSERPDFTTL 106
P E PD + KGE+ +P + C +V +M +CW D + RP F L
Sbjct: 217 PHEVPDL-------LEKGERLAQPQI----CTIDVYMVMVKCWMIDENVRPTFKEL 261
Score = 29.9 bits (67), Expect = 0.22
Identities = 14/44 (31%), Positives = 24/44 (54%), Gaps = 4/44 (9%)
Query: 14 EIVESVRKGEKCLRPNLSELTCEEEVTAIMKRCWNEDPSERPDF 57
E+ + + KGE+ +P + C +V +M +CW D + RP F
Sbjct: 219 EVPDLLEKGERLAQPQI----CTIDVYMVMVKCWMIDENVRPTF 258
>gnl|CDD|133194 cd05063, PTKc_EphR_A2, Catalytic domain of the Protein Tyrosine
Kinase, Ephrin Receptor A2. Protein Tyrosine Kinase
(PTK) family; Ephrin Receptor (EphR) subfamily; EphA2
receptor; catalytic (c) domain. The PTKc family is part
of a larger superfamily that includes the catalytic
domains of other kinases such as protein
serine/threonine kinases, RIO kinases, and
phosphoinositide 3-kinase (PI3K). PTKs catalyze the
transfer of the gamma-phosphoryl group from ATP to
tyrosine (tyr) residues in protein substrates. EphRs
comprise the largest subfamily of receptor tyr kinases
(RTKs). In general, class EphA receptors bind
GPI-anchored ephrin-A ligands. There are ten vertebrate
EphA receptors (EphA1-10), which display promiscuous
interactions with six ephrin-A ligands. EphRs contain an
ephrin binding domain and two fibronectin repeats
extracellularly, a transmembrane segment, and a
cytoplasmic tyr kinase domain. Binding of the ephrin
ligand to EphR requires cell-cell contact since both are
anchored to the plasma membrane. The resulting
downstream signals occur bidirectionally in both
EphR-expressing cells (forward signaling) and
ephrin-expressing cells (reverse signaling). Ephrin/EphR
interaction mainly results in cell-cell repulsion or
adhesion, making it important in neural development and
plasticity, cell morphogenesis, cell-fate determination,
embryonic development, tissue patterning, and
angiogenesis. The EphA2 receptor is overexpressed in
tumor cells and tumor blood vessels in a variety of
cancers including breast, prostate, lung, and colon. As
a result, it is an attractive target for drug design
since its inhibition could affect several aspects of
tumor progression.
Length = 268
Score = 31.1 bits (70), Expect = 0.084
Identities = 17/64 (26%), Positives = 31/64 (48%), Gaps = 7/64 (10%)
Query: 53 ERPDF---TTEIVESVRKGEKCLRPSLSELTCEEEVTAIMKRCWNEDPSERPDFTTLKAA 109
ERP + E+++++ G + P + C V +M +CW +D + RP F +
Sbjct: 208 ERPYWDMSNHEVMKAINDGFRLPAP----MDCPSAVYQLMLQCWQQDRARRPRFVDIVNL 263
Query: 110 IRKL 113
+ KL
Sbjct: 264 LDKL 267
Score = 28.8 bits (64), Expect = 0.51
Identities = 12/44 (27%), Positives = 23/44 (52%), Gaps = 4/44 (9%)
Query: 14 EIVESVRKGEKCLRPNLSELTCEEEVTAIMKRCWNEDPSERPDF 57
E+++++ G + P + C V +M +CW +D + RP F
Sbjct: 218 EVMKAINDGFRLPAP----MDCPSAVYQLMLQCWQQDRARRPRF 257
>gnl|CDD|173627 cd05037, PTK_Jak_rpt1, Pseudokinase (repeat 1) domain of the
Protein Tyrosine Kinases, Janus kinases. Protein
Tyrosine Kinase (PTK) family; Janus kinase (Jak)
subfamily; pseudokinase domain (repeat1). The Jak
subfamily is composed of Jak1, Jak2, Jak3, TYK2, and
similar proteins. The PTKc (catalytic domain) family to
which this subfamily belongs, is part of a larger
superfamily that includes the catalytic domains of other
kinases such as protein serine/threonine kinases, RIO
kinases, and phosphoinositide 3-kinase (PI3K). PTKs
catalyze the transfer of the gamma-phosphoryl group from
ATP to tyrosine (tyr) residues in protein substrates.
Jak subfamily proteins are cytoplasmic (or nonreceptor)
tyr kinases containing an N-terminal FERM domain,
followed by a Src homology 2 (SH2) domain, a
pseudokinase domain, and a C-terminal catalytic tyr
kinase domain. The pseudokinase domain shows similarity
to tyr kinases but lacks crucial residues for catalytic
activity and ATP binding. It modulates the kinase
activity of the C-terminal catalytic domain. Most Jaks
are expressed in a wide variety of tissues, except for
Jak3, which is expressed only in hematopoietic cells.
Jaks are crucial for cytokine receptor signaling. They
are activated by autophosphorylation upon
cytokine-induced receptor aggregation, and subsequently
trigger downstream signaling events such as the
phosphorylation of signal transducers and activators of
transcription (STATs). Jaks are also involved in
regulating the surface expression of some cytokine
receptors. The Jak-STAT pathway is involved in many
biological processes including hematopoiesis,
immunoregulation, host defense, fertility, lactation,
growth, and embryogenesis.
Length = 259
Score = 30.9 bits (70), Expect = 0.11
Identities = 12/31 (38%), Positives = 20/31 (64%), Gaps = 3/31 (9%)
Query: 84 EVTAIMKRCWNEDPSERPDFTTLKAAIRKLN 114
E+ ++ +CW DP++RP F +A +R LN
Sbjct: 232 ELANLINQCWTYDPTKRPSF---RAILRDLN 259
Score = 29.4 bits (66), Expect = 0.35
Identities = 8/26 (30%), Positives = 16/26 (61%)
Query: 38 EVTAIMKRCWNEDPSERPDFTTEIVE 63
E+ ++ +CW DP++RP F + +
Sbjct: 232 ELANLINQCWTYDPTKRPSFRAILRD 257
>gnl|CDD|173764 cd08224, STKc_Nek6_Nek7, Catalytic domain of the Protein
Serine/Threonine Kinases, Never In Mitosis gene
A-related kinase 6 and 7. Serine/Threonine Kinases
(STKs), Never In Mitosis gene A (NIMA)-related kinase 6
(Nek6) and Nek7 subfamily, catalytic (c) domain. STKs
catalyze the transfer of the gamma-phosphoryl group from
ATP to serine/threonine residues on protein substrates.
The Nek6/7 subfamily is part of a family of 11 different
Neks (Nek1-11) that are involved in cell cycle control.
The Nek family is part of a larger superfamily that
includes the catalytic domains of other protein STKs,
protein tyrosine kinases, RIO kinases, aminoglycoside
phosphotransferase, choline kinase, and phosphoinositide
3-kinase. Nek6 and Nek7 are the shortest Neks,
consisting only of the catalytic domain and a very short
N-terminal extension. They show distinct expression
patterns and both appear to be downstream substrates of
Nek9. They are required for mitotic spindle formation
and cytokinesis. They may also be regulators of the p70
ribosomal S6 kinase.
Length = 267
Score = 30.1 bits (68), Expect = 0.17
Identities = 16/41 (39%), Positives = 23/41 (56%)
Query: 66 RKGEKCLRPSLSELTCEEEVTAIMKRCWNEDPSERPDFTTL 106
+K EKC P L EE+ ++ RC N DP +RPD + +
Sbjct: 218 KKIEKCDYPPLPADHYSEELRDLVSRCINPDPEKRPDISYV 258
Score = 29.7 bits (67), Expect = 0.27
Identities = 16/40 (40%), Positives = 22/40 (55%)
Query: 20 RKGEKCLRPNLSELTCEEEVTAIMKRCWNEDPSERPDFTT 59
+K EKC P L EE+ ++ RC N DP +RPD +
Sbjct: 218 KKIEKCDYPPLPADHYSEELRDLVSRCINPDPEKRPDISY 257
>gnl|CDD|173770 cd08528, STKc_Nek10, Catalytic domain of the Protein
Serine/Threonine Kinase, Never In Mitosis gene A-related
kinase 10. Serine/Threonine Kinases (STKs), Never In
Mitosis gene A (NIMA)-related kinase 10 (Nek10)
subfamily, catalytic (c) domain. STKs catalyze the
transfer of the gamma-phosphoryl group from ATP to
serine/threonine residues on protein substrates. The
Nek10 subfamily is one of a family of 11 different Neks
(Nek1-11) that are involved in cell cycle control. The
Nek family is part of a larger superfamily that includes
the catalytic domains of other protein STKs, protein
tyrosine kinases, RIO kinases, aminoglycoside
phosphotransferase, choline kinase, and phosphoinositide
3-kinase. No function has yet been ascribed to Nek10.
The gene encoding Nek10 is a putative causative gene for
breast cancer; it is located within a breast cancer
susceptibility loci on chromosome 3p24.
Length = 269
Score = 30.2 bits (68), Expect = 0.18
Identities = 17/52 (32%), Positives = 24/52 (46%), Gaps = 7/52 (13%)
Query: 59 TEIVESVRKGEKCLRPSLSELTCEEEVTAIMKRCWNEDPSERPDFTTLKAAI 110
T+IVE+V + L E E+VT ++ C D RPD + A I
Sbjct: 223 TKIVEAVYE-------PLPEGMYSEDVTDVITSCLTPDAEARPDIIQVSAMI 267
Score = 28.2 bits (63), Expect = 0.79
Identities = 10/27 (37%), Positives = 13/27 (48%)
Query: 30 LSELTCEEEVTAIMKRCWNEDPSERPD 56
L E E+VT ++ C D RPD
Sbjct: 233 LPEGMYSEDVTDVITSCLTPDAEARPD 259
>gnl|CDD|133234 cd05103, PTKc_VEGFR2, Catalytic domain of the Protein Tyrosine
Kinase, Vascular Endothelial Growth Factor Receptor 2.
Protein Tyrosine Kinase (PTK) family; Vascular
Endothelial Growth Factor Receptor 2 (VEGFR2); catalytic
(c) domain. The PTKc family is part of a larger
superfamily that includes the catalytic domains of other
kinases such as protein serine/threonine kinases, RIO
kinases, and phosphoinositide 3-kinase (PI3K). PTKs
catalyze the transfer of the gamma-phosphoryl group from
ATP to tyrosine (tyr) residues in protein substrates.
VEGFR2 (or Flk1) is a member of the VEGFR subfamily of
proteins, which are receptor tyr kinases (RTKs)
containing an extracellular ligand-binding region with
seven immunoglobulin (Ig)-like domains, a transmembrane
segment, and an intracellular catalytic domain. The
binding of VEGFRs to their ligands, the VEGFs, leads to
receptor dimerization, activation, and intracellular
signaling. The carboxyl terminus of VEGFR2 plays an
important role in its autophosphorylation and
activation. VEGFR2 binds the ligands VEGFA, VEGFC, VEGFD
and VEGFE. VEGFR2 signaling is implicated in all aspects
of normal and pathological vascular endothelial cell
biology. It induces a variety of cellular effects
including migration, survival, and proliferation. It is
critical in regulating embryonic vascular development
and angiogenesis. VEGFR2 is the major signal transducer
in pathological angiogenesis including cancer and
diabetic retinopathy, and is a target for inhibition in
cancer therapy.
Length = 343
Score = 30.0 bits (67), Expect = 0.22
Identities = 15/51 (29%), Positives = 28/51 (54%), Gaps = 5/51 (9%)
Query: 13 DEIVESVRKGEKCLRPNLSELTCEEEVTAIMKRCWNEDPSERPDFTTEIVE 63
+E +++G + P+ + E+ M CW+ +PS+RP F +E+VE
Sbjct: 289 EEFCRRLKEGTRMRAPDYTT----PEMYQTMLDCWHGEPSQRPTF-SELVE 334
Score = 29.2 bits (65), Expect = 0.40
Identities = 10/23 (43%), Positives = 15/23 (65%)
Query: 84 EVTAIMKRCWNEDPSERPDFTTL 106
E+ M CW+ +PS+RP F+ L
Sbjct: 310 EMYQTMLDCWHGEPSQRPTFSEL 332
>gnl|CDD|185502 PTZ00182, PTZ00182, 3-methyl-2-oxobutanate dehydrogenase;
Provisional.
Length = 355
Score = 29.9 bits (68), Expect = 0.22
Identities = 21/61 (34%), Positives = 32/61 (52%), Gaps = 9/61 (14%)
Query: 3 VELSDLRIL----RDEIVESVRKGEKCLRPNLSELTC---EEEVTAIMKRCWN--EDPSE 53
E+ DLR L R+ IV+SV+K +C+ + + TC E IM+ C+ E P +
Sbjct: 262 CEVIDLRSLRPWDRETIVKSVKKTGRCVIVHEAPPTCGIGAEIAAQIMEDCFLYLEAPIK 321
Query: 54 R 54
R
Sbjct: 322 R 322
>gnl|CDD|215690 pfam00069, Pkinase, Protein kinase domain.
Length = 260
Score = 29.9 bits (68), Expect = 0.25
Identities = 12/28 (42%), Positives = 19/28 (67%), Gaps = 1/28 (3%)
Query: 37 EEVTAIMKRCWNEDPSERPDFTTEIVES 64
EE ++K+C N+DPS+RP EI++
Sbjct: 231 EEAKDLIKKCLNKDPSKRPTA-EEILQH 257
Score = 29.1 bits (66), Expect = 0.45
Identities = 10/32 (31%), Positives = 16/32 (50%)
Query: 73 RPSLSELTCEEEVTAIMKRCWNEDPSERPDFT 104
+ EE ++K+C N+DPS+RP
Sbjct: 221 FDEPKWSSGSEEAKDLIKKCLNKDPSKRPTAE 252
>gnl|CDD|173639 cd05066, PTKc_EphR_A, Catalytic domain of the Protein Tyrosine
Kinases, Class EphA Ephrin Receptors. Protein Tyrosine
Kinase (PTK) family; Ephrin Receptor (EphR) subfamily;
most class EphA receptors including EphA3, EphA4, EphA5,
and EphA7, but excluding EphA1, EphA2 and EphA10;
catalytic (c) domain. The PTKc family is part of a
larger superfamily that includes the catalytic domains
of other kinases such as protein serine/threonine
kinases, RIO kinases, and phosphoinositide 3-kinase
(PI3K). PTKs catalyze the transfer of the
gamma-phosphoryl group from ATP to tyrosine (tyr)
residues in protein substrates. EphRs comprise the
largest subfamily of receptor tyr kinases (RTKs). In
general, class EphA receptors bind GPI-anchored ephrin-A
ligands. There are ten vertebrate EphA receptors
(EphA1-10), which display promiscuous interactions with
six ephrin-A ligands. One exception is EphA4, which also
binds ephrins-B2/B3. EphRs contain an ephrin-binding
domain and two fibronectin repeats extracellularly, a
transmembrane segment, and a cytoplasmic tyr kinase
domain. Binding of the ephrin ligand to EphR requires
cell-cell contact since both are anchored to the plasma
membrane. The resulting downstream signals occur
bidirectionally in both EphR-expressing cells (forward
signaling) and ephrin-expressing cells (reverse
signaling). Ephrin/EphR interaction mainly results in
cell-cell repulsion or adhesion, making it important in
neural development and plasticity, cell morphogenesis,
cell-fate determination, embryonic development, tissue
patterning, and angiogenesis. EphARs and ephrin-A
ligands are expressed in multiple areas of the
developing brain, especially in the retina and tectum.
They are part of a system controlling retinotectal
mapping.
Length = 267
Score = 29.9 bits (67), Expect = 0.26
Identities = 16/64 (25%), Positives = 33/64 (51%), Gaps = 7/64 (10%)
Query: 53 ERPDF---TTEIVESVRKGEKCLRPSLSELTCEEEVTAIMKRCWNEDPSERPDFTTLKAA 109
ERP + ++++++ +G + P + C + +M CW +D +ERP F + +
Sbjct: 207 ERPYWEMSNQDVIKAIEEGYRLPAP----MDCPAALHQLMLDCWQKDRNERPKFEQIVSI 262
Query: 110 IRKL 113
+ KL
Sbjct: 263 LDKL 266
Score = 28.3 bits (63), Expect = 0.93
Identities = 14/54 (25%), Positives = 29/54 (53%), Gaps = 5/54 (9%)
Query: 14 EIVESVRKGEKCLRPNLSELTCEEEVTAIMKRCWNEDPSERPDFTTEIVESVRK 67
++++++ +G + P + C + +M CW +D +ERP F +IV + K
Sbjct: 217 DVIKAIEEGYRLPAP----MDCPAALHQLMLDCWQKDRNERPKF-EQIVSILDK 265
>gnl|CDD|173623 cd00180, PKc, Catalytic domain of Protein Kinases. Protein Kinases
(PKs), catalytic (c) domain. PKs catalyze the transfer
of the gamma-phosphoryl group from ATP to
serine/threonine or tyrosine residues on protein
substrates. The PK family is part of a larger
superfamily that includes the catalytic domains of RIO
kinases, aminoglycoside phosphotransferase, choline
kinase, phosphoinositide 3-kinase (PI3K), and
actin-fragmin kinase. PKs make up a large family of
serine/threonine kinases, protein tyrosine kinases
(PTKs), and dual-specificity PKs that phosphorylate both
serine/threonine and tyrosine residues of target
proteins. Majority of protein phosphorylation, about
95%, occurs on serine residues while only 1% occurs on
tyrosine residues. Protein phosphorylation is a
mechanism by which a wide variety of cellular proteins,
such as enzymes and membrane channels, are reversibly
regulated in response to certain stimuli. PKs often
function as components of signal transduction pathways
in which one kinase activates a second kinase, which in
turn, may act on other kinases; this sequential action
transmits a signal from the cell surface to target
proteins, which results in cellular responses. The PK
family is one of the largest known protein families with
more than 100 homologous yeast enzymes and 550 human
proteins. A fraction of PK family members are
pseudokinases that lack crucial residues for catalytic
activity. The mutiplicity of kinases allows for specific
regulation according to substrate, tissue distribution,
and cellular localization. PKs regulate many cellular
processes including proliferation, division,
differentiation, motility, survival, metabolism,
cell-cycle progression, cytoskeletal rearrangement,
immunity, and neuronal functions. Many kinases are
implicated in the development of various human diseases
including different types of cancer.
Length = 215
Score = 29.5 bits (67), Expect = 0.30
Identities = 8/28 (28%), Positives = 16/28 (57%), Gaps = 1/28 (3%)
Query: 37 EEVTAIMKRCWNEDPSERPDFTTEIVES 64
E+ ++++ +DP +RP EI+E
Sbjct: 188 PELKDLIRKMLQKDPEKRPSA-KEILEH 214
Score = 29.1 bits (66), Expect = 0.34
Identities = 5/25 (20%), Positives = 13/25 (52%)
Query: 83 EEVTAIMKRCWNEDPSERPDFTTLK 107
E+ ++++ +DP +RP +
Sbjct: 188 PELKDLIRKMLQKDPEKRPSAKEIL 212
>gnl|CDD|132954 cd06623, PKc_MAPKK_plant_like, Catalytic domain of Plant
dual-specificity MAP kinase kinases and similar
proteins. Protein kinases (PKs), MAP kinase kinase
(MAPKK) subfamily, Plant MAPKKs and similar proteins,
catalytic (c) domain. PKs catalyze the transfer of the
gamma-phosphoryl group from ATP to serine/threonine or
tyrosine residues on protein substrates. The MAPKK
subfamily is part of a larger superfamily that includes
the catalytic domains of other protein serine/threonine
kinases, protein tyrosine kinases, RIO kinases,
aminoglycoside phosphotransferase, choline kinase, and
phosphoinositide 3-kinase. The mitogen-activated protein
(MAP) kinase signaling pathways are important mediators
of cellular responses to extracellular signals. The
pathways involve a triple kinase core cascade comprising
of the MAP kinase (MAPK), which is phosphorylated and
activated by a MAPK kinase (MAPKK or MKK), which itself
is phosphorylated and activated by a MAPK kinase kinase
(MAPKKK or MKKK). Members of this group include MAPKKs
from plants, kinetoplastids, alveolates, and mycetozoa.
The MAPKK, LmxPK4, from Leishmania mexicana, is
important in differentiation and virulence.
Dictyostelium discoideum MEK1 is required for proper
chemotaxis. MEK1 null mutants display severe defects in
cell polarization and directional movement. Plants
contain multiple MAPKKs like other eukaryotes. The
Arabidopsis genome encodes for 10 MAPKKs while poplar
and rice contain 13 MAPKKs each. The functions of these
proteins have not been fully elucidated. There is
evidence to suggest that MAPK cascades are involved in
plant stress responses. In Arabidopsis, MKK3 plays a
role in pathogen signaling, MKK2 is involved in cold and
salt stress signaling, MKK4/MKK5 participates in innate
immunity, and MKK7 regulates basal and systemic acquired
resistance.
Length = 264
Score = 29.1 bits (66), Expect = 0.37
Identities = 15/56 (26%), Positives = 24/56 (42%), Gaps = 4/56 (7%)
Query: 51 PSERPDFTTEIVESVRKGEKCLRPSLSELTCEEEVTAIMKRCWNEDPSERPDFTTL 106
P +P F E+++++ G PSL E + C +DP +RP L
Sbjct: 202 PPGQPSFF-ELMQAICDGPP---PSLPAEEFSPEFRDFISACLQKDPKKRPSAAEL 253
Score = 26.8 bits (60), Expect = 2.7
Identities = 8/29 (27%), Positives = 12/29 (41%)
Query: 28 PNLSELTCEEEVTAIMKRCWNEDPSERPD 56
P+L E + C +DP +RP
Sbjct: 221 PSLPAEEFSPEFRDFISACLQKDPKKRPS 249
>gnl|CDD|237633 PRK14168, PRK14168, bifunctional 5,10-methylene-tetrahydrofolate
dehydrogenase/ 5,10-methylene-tetrahydrofolate
cyclohydrolase; Provisional.
Length = 297
Score = 29.1 bits (65), Expect = 0.42
Identities = 21/88 (23%), Positives = 40/88 (45%), Gaps = 7/88 (7%)
Query: 11 LRDEIVESVRKGEKCLRPNLSELTCEEEVTAIMKRCWNEDPSERPDFTTEIVESVRKGEK 70
+R+EI+E +R L+ + V ++ E P+ T +I + R G
Sbjct: 11 IREEILEEIRGEVAELKEKYGK------VPGLVTILVGESPASLSYVTLKIKTAHRLGFH 64
Query: 71 CLRPSLSELTCEEEVTAIMKRCWNEDPS 98
++ + S EEE+ A++ + +N D S
Sbjct: 65 EIQDNQSVDITEEELLALIDK-YNNDDS 91
>gnl|CDD|133227 cd05096, PTKc_DDR1, Catalytic domain of the Protein Tyrosine
Kinase, Discoidin Domain Receptor 1. Protein Tyrosine
Kinase (PTK) family; mammalian Discoidin Domain Receptor
1 (DDR1) and homologs; catalytic (c) domain. The PTKc
family is part of a larger superfamily that includes the
catalytic domains of other kinases such as protein
serine/threonine kinases, RIO kinases, and
phosphoinositide 3-kinase (PI3K). PTKs catalyze the
transfer of the gamma-phosphoryl group from ATP to
tyrosine (tyr) residues in protein substrates. DDR1 is a
member of the DDR subfamily, which are receptor tyr
kinases (RTKs) containing an extracellular discoidin
homology domain, a transmembrane segment, an extended
juxtamembrane region, and an intracellular catalytic
domain. The binding of the ligand, collagen, to DDRs
results in a slow but sustained receptor activation.
DDR1 binds to all collagens tested to date (types I-IV).
It is widely expressed in many tissues. It is abundant
in the brain and is also found in keratinocytes, colonic
mucosa epithelium, lung epithelium, thyroid follicles,
and the islets of Langerhans. During embryonic
development, it is found in the developing
neuroectoderm. DDR1 is a key regulator of cell
morphogenesis, differentiation and proliferation. It is
important in the development of the mammary gland, the
vasculator and the kidney. DDR1 is also found in human
leukocytes, where it facilitates cell adhesion,
migration, maturation, and cytokine production.
Length = 304
Score = 28.7 bits (64), Expect = 0.52
Identities = 10/30 (33%), Positives = 18/30 (60%)
Query: 81 CEEEVTAIMKRCWNEDPSERPDFTTLKAAI 110
C + + +M +CW+ D ERP F+ + A +
Sbjct: 273 CPQGLYELMLQCWSRDCRERPSFSDIHAFL 302
Score = 27.6 bits (61), Expect = 1.6
Identities = 9/24 (37%), Positives = 15/24 (62%)
Query: 35 CEEEVTAIMKRCWNEDPSERPDFT 58
C + + +M +CW+ D ERP F+
Sbjct: 273 CPQGLYELMLQCWSRDCRERPSFS 296
>gnl|CDD|133193 cd05062, PTKc_IGF-1R, Catalytic domain of the Protein Tyrosine
Kinase, Insulin-like Growth Factor-1 Receptor. Protein
Tyrosine Kinase (PTK) family; Insulin-like Growth
Factor-1 Receptor (IGF-1R); catalytic (c) domain. The
PTKc family is part of a larger superfamily that
includes the catalytic domains of other kinases such as
protein serine/threonine kinases, RIO kinases, and
phosphoinositide 3-kinase (PI3K). PTKs catalyze the
transfer of the gamma-phosphoryl group from ATP to
tyrosine (tyr) residues in protein substrates. IGF-1R is
a receptor tyr kinases (RTK) that is composed of two
alphabeta heterodimers. Binding of the ligand (IGF-1 or
IGF-2) to the extracellular alpha subunit activates the
intracellular tyr kinase domain of the transmembrane
beta subunit. Receptor activation leads to
autophosphorylation, which stimulates downstream kinase
activities and biological function. IGF-1R signaling is
important in the differentiation, growth, and survival
of normal cells. In cancer cells, where it is frequently
overexpressed, IGF-1R is implicated in proliferation,
the suppression of apoptosis, invasion, and metastasis.
IGF-1R is being developed as a therapeutic target in
cancer treatment.
Length = 277
Score = 28.8 bits (64), Expect = 0.57
Identities = 11/33 (33%), Positives = 20/33 (60%), Gaps = 1/33 (3%)
Query: 35 CEEEVTAIMKRCWNEDPSERPDFTTEIVESVRK 67
C + + +M+ CW +P RP F EI+ S+++
Sbjct: 246 CPDMLFELMRMCWQYNPKMRPSF-LEIISSIKE 277
Score = 27.7 bits (61), Expect = 1.4
Identities = 9/32 (28%), Positives = 19/32 (59%)
Query: 81 CEEEVTAIMKRCWNEDPSERPDFTTLKAAIRK 112
C + + +M+ CW +P RP F + ++I++
Sbjct: 246 CPDMLFELMRMCWQYNPKMRPSFLEIISSIKE 277
>gnl|CDD|184240 PRK13683, PRK13683, hypothetical protein; Provisional.
Length = 87
Score = 27.6 bits (62), Expect = 0.58
Identities = 14/35 (40%), Positives = 18/35 (51%), Gaps = 4/35 (11%)
Query: 2 RVELSDLRILRDEIVESVRKGEKCLRPNLSELTCE 36
R E D L +I +++R G P L ELTCE
Sbjct: 19 RKEAEDAEALYQQIRQAMRSG----NPRLLELTCE 49
>gnl|CDD|173643 cd05077, PTK_Jak1_rpt1, Pseudokinase (repeat 1) domain of the
Protein Tyrosine Kinase, Janus kinase 1. Protein
Tyrosine Kinase (PTK) family; Janus kinase 1 (Jak1);
pseudokinase domain (repeat 1). The PTKc (catalytic
domain) family to which this subfamily belongs, is part
of a larger superfamily that includes the catalytic
domains of other kinases such as protein
serine/threonine kinases, RIO kinases, and
phosphoinositide 3-kinase (PI3K). PTKs catalyze the
transfer of the gamma-phosphoryl group from ATP to
tyrosine (tyr) residues in protein substrates. Jak1 is a
member of the Janus kinase (Jak) subfamily of proteins,
which are cytoplasmic (or nonreceptor) tyr kinases
containing an N-terminal FERM domain, followed by a Src
homology 2 (SH2) domain, a pseudokinase domain, and a
C-terminal tyr kinase domain. The pseudokinase domain
shows similarity to tyr kinases but lacks crucial
residues for catalytic activity and ATP binding. It
modulates the kinase activity of the C-terminal
catalytic domain. Jaks are crucial for cytokine receptor
signaling. They are activated by autophosphorylation
upon cytokine-induced receptor aggregation, and
subsequently trigger downstream signaling events such as
the phosphorylation of signal transducers and activators
of transcription (STATs). Jak1 is widely expressed in
many tissues. Many cytokines are dependent on Jak1 for
signaling, including those that use the shared receptor
subunits common gamma chain (IL-2, IL-4, IL-7, IL-9,
IL-15, IL-21) and gp130 (IL-6, IL-11, oncostatin M,
G-CSF, and IFNs, among others). The many varied
interactions of Jak1 and its ubiquitous expression
suggest many biological roles. Jak1 is important in
neurological development, as well as in lymphoid
development and function. It also plays a role in the
pathophysiology of cardiac hypertrophy and heart
failure. A mutation in the ATP-binding site of Jak1 was
identified in a human uterine leiomyosarcoma cell line,
resulting in defective cytokine induction and antigen
presentation, thus allowing the tumor to evade the
immune system.
Length = 262
Score = 28.4 bits (63), Expect = 0.74
Identities = 21/75 (28%), Positives = 34/75 (45%), Gaps = 9/75 (12%)
Query: 40 TAIMKRCWNEDPSERPDFTTEIVESVRKGEKCLRPSLSELTCEEEVTAIMKRCWNEDPSE 99
T + + C+N E P + E R E +C+E + +M C N DP++
Sbjct: 197 TTLWEICYN---GEIPLKDKTLAEKERFYEGQCMLVTP--SCKE-LADLMTHCMNYDPNQ 250
Query: 100 RPDFTTLKAAIRKLN 114
RP F +A +R +N
Sbjct: 251 RPFF---RAIMRDIN 262
Score = 26.4 bits (58), Expect = 4.1
Identities = 9/21 (42%), Positives = 14/21 (66%)
Query: 37 EEVTAIMKRCWNEDPSERPDF 57
+E+ +M C N DP++RP F
Sbjct: 234 KELADLMTHCMNYDPNQRPFF 254
>gnl|CDD|173768 cd08228, STKc_Nek6, Catalytic domain of the Protein
Serine/Threonine Kinase, Never In Mitosis gene A-related
kinase 6. Serine/Threonine Kinases (STKs), Never In
Mitosis gene A (NIMA)-related kinase 6 (Nek6) subfamily,
catalytic (c) domain. STKs catalyze the transfer of the
gamma-phosphoryl group from ATP to serine/threonine
residues on protein substrates. The Nek6 subfamily is
one of a family of 11 different Neks (Nek1-11) that are
involved in cell cycle control. The Nek family is part
of a larger superfamily that includes the catalytic
domains of other protein STKs, protein tyrosine kinases,
RIO kinases, aminoglycoside phosphotransferase, choline
kinase, and phosphoinositide 3-kinase. Nek6 is required
for the transition from metaphase to anaphase. It also
plays important roles in mitotic spindle formation and
cytokinesis. Activated by Nek9 during mitosis, Nek6
phosphorylates Eg5, a kinesin that is important for
spindle bipolarity. Nek6 localizes to spindle
microtubules during metaphase and anaphase, and to the
midbody during cytokinesis.
Length = 267
Score = 27.3 bits (60), Expect = 2.1
Identities = 12/37 (32%), Positives = 19/37 (51%)
Query: 66 RKGEKCLRPSLSELTCEEEVTAIMKRCWNEDPSERPD 102
+K E+C P L E++ ++ C DP +RPD
Sbjct: 218 QKIEQCDYPPLPTEHYSEKLRELVSMCIYPDPDQRPD 254
Score = 26.5 bits (58), Expect = 3.1
Identities = 12/37 (32%), Positives = 19/37 (51%)
Query: 20 RKGEKCLRPNLSELTCEEEVTAIMKRCWNEDPSERPD 56
+K E+C P L E++ ++ C DP +RPD
Sbjct: 218 QKIEQCDYPPLPTEHYSEKLRELVSMCIYPDPDQRPD 254
>gnl|CDD|173651 cd05095, PTKc_DDR2, Catalytic domain of the Protein Tyrosine
Kinase, Discoidin Domain Receptor 2. Protein Tyrosine
Kinase (PTK) family; mammalian Discoidin Domain Receptor
2 (DDR2) and homologs; catalytic (c) domain. The PTKc
family is part of a larger superfamily that includes the
catalytic domains of other kinases such as protein
serine/threonine kinases, RIO kinases, and
phosphoinositide 3-kinase (PI3K). PTKs catalyze the
transfer of the gamma-phosphoryl group from ATP to
tyrosine (tyr) residues in protein substrates. DDR2 is a
member of the DDR subfamily, which are receptor tyr
kinases (RTKs) containing an extracellular discoidin
homology domain, a transmembrane segment, an extended
juxtamembrane region, and an intracellular catalytic
domain. The binding of the ligand, collagen, to DDRs
results in a slow but sustained receptor activation.
DDR2 binds mostly to fibrillar collagens. More recently,
it has been reported to also bind collagen X. DDR2 is
widely expressed in many tissues with the highest levels
found in skeletal muscle, skin, kidney and lung. It is
important in cell proliferation and development. Mice,
with a deletion of DDR2, suffer from dwarfism and
delayed healing of epidermal wounds. DDR2 also
contributes to collagen (type I) regulation by
inhibiting fibrillogenesis and altering the morphology
of collagen fibers. It is also expressed in immature
dendritic cells (DCs), where it plays a role in DC
activation and function.
Length = 296
Score = 27.2 bits (60), Expect = 2.2
Identities = 9/30 (30%), Positives = 15/30 (50%)
Query: 81 CEEEVTAIMKRCWNEDPSERPDFTTLKAAI 110
C + + +M CW + ERP F + A +
Sbjct: 265 CPDSLYKLMLSCWRRNAKERPSFQEIHATL 294
Score = 26.8 bits (59), Expect = 2.5
Identities = 8/23 (34%), Positives = 12/23 (52%)
Query: 35 CEEEVTAIMKRCWNEDPSERPDF 57
C + + +M CW + ERP F
Sbjct: 265 CPDSLYKLMLSCWRRNAKERPSF 287
>gnl|CDD|180994 PRK07480, PRK07480, putative aminotransferase; Validated.
Length = 456
Score = 26.8 bits (60), Expect = 2.7
Identities = 14/19 (73%), Positives = 16/19 (84%), Gaps = 1/19 (5%)
Query: 3 VELSDLRILRDE-IVESVR 20
V L++LRILRDE IVE VR
Sbjct: 332 VALANLRILRDEGIVERVR 350
>gnl|CDD|219863 pfam08490, DUF1744, Domain of unknown function (DUF1744). This
domain is found on the epsilon catalytic subunit of DNA
polymerase. It is found C terminal to pfam03104 and
pfam00136.
Length = 396
Score = 26.9 bits (60), Expect = 2.7
Identities = 15/82 (18%), Positives = 27/82 (32%), Gaps = 7/82 (8%)
Query: 35 CEEEVTAIMKRCWNEDPSERPDFTTEIVESVRKGEKCLRPSLSELTCEEEVTAIMKRCWN 94
E+ + + K E F E +K K L +L + E+ ++
Sbjct: 10 REKLLEKLDKFGQVFSYPENMTFEVEYFTDEKKAYKALSKALLKYREEKSGPTLLA---- 65
Query: 95 EDPSERPDFTTLKAAIRKLNKI 116
+ P + LK I L +
Sbjct: 66 ---LQSPFPSRLKKKIPILEEF 84
>gnl|CDD|173762 cd08222, STKc_Nek11, Catalytic domain of the Protein
Serine/Threonine Kinase, Never In Mitosis gene A-related
kinase 11. Serine/Threonine Kinases (STKs), Never In
Mitosis gene A (NIMA)-related kinase 11 (Nek11)
subfamily, catalytic (c) domain. STKs catalyze the
transfer of the gamma-phosphoryl group from ATP to
serine/threonine residues on protein substrates. The
Nek11 subfamily is one of a family of 11 different Neks
(Nek1-11) that are involved in cell cycle control. The
Nek family is part of a larger superfamily that includes
the catalytic domains of other protein STKs, protein
tyrosine kinases, RIO kinases, aminoglycoside
phosphotransferase, choline kinase, and phosphoinositide
3-kinase. Nek11 is involved, through direct
phosphorylation, in regulating the degradation of Cdc25A
(Cell Division Cycle 25 homolog A), which plays a role
in cell cycle progression and in activating cyclin
dependent kinases. Nek11 is activated by CHK1
(CHeckpoint Kinase 1) and may be involved in the G2/M
checkpoint. Nek11 may also play a role in the S-phase
checkpoint as well as in DNA replication and genotoxic
stress responses.
Length = 260
Score = 26.8 bits (59), Expect = 2.8
Identities = 15/41 (36%), Positives = 23/41 (56%), Gaps = 4/41 (9%)
Query: 61 IVESVRKGEKCLRPSLSELTCEEEVTAIMKRCWNEDPSERP 101
+V + +G PSL E T ++ +IM+ N+DPS RP
Sbjct: 213 VVLRIVEGPT---PSLPE-TYSRQLNSIMQSMLNKDPSLRP 249
>gnl|CDD|192573 pfam10406, TAF8_C, Transcription factor TFIID complex subunit 8
C-term. This is the C-terminal, Delta, part of the
TAF8 protein. The N-terminal is generally the histone
fold domain, Bromo_TP (pfam07524). TAF8 is one of the
key subunits of the transcription factor for pol II,
TFIID. TAF8 is one of the several general cofactors
which are typically involved in gene activation to
bring about the communication between gene-specific
transcription factors and components of the general
transcription machinery.
Length = 51
Score = 24.9 bits (55), Expect = 3.4
Identities = 10/26 (38%), Positives = 16/26 (61%)
Query: 2 RVELSDLRILRDEIVESVRKGEKCLR 27
++D R +R+++VE R EK LR
Sbjct: 23 TEPVTDPRKIREKLVEESRLAEKALR 48
>gnl|CDD|237634 PRK14179, PRK14179, bifunctional 5,10-methylene-tetrahydrofolate
dehydrogenase/ 5,10-methylene-tetrahydrofolate
cyclohydrolase; Provisional.
Length = 284
Score = 26.3 bits (58), Expect = 4.7
Identities = 8/24 (33%), Positives = 16/24 (66%), Gaps = 1/24 (4%)
Query: 29 NLSELTCEEEVTAIMKRCWNEDPS 52
L E +EE+ +++R +N+DP+
Sbjct: 68 RLPETISQEELLDLIER-YNQDPT 90
Score = 25.5 bits (56), Expect = 6.7
Identities = 8/23 (34%), Positives = 16/23 (69%), Gaps = 1/23 (4%)
Query: 76 LSELTCEEEVTAIMKRCWNEDPS 98
L E +EE+ +++R +N+DP+
Sbjct: 69 LPETISQEELLDLIER-YNQDPT 90
>gnl|CDD|214567 smart00220, S_TKc, Serine/Threonine protein kinases, catalytic
domain. Phosphotransferases. Serine or
threonine-specific kinase subfamily.
Length = 254
Score = 26.0 bits (58), Expect = 5.0
Identities = 6/41 (14%), Positives = 13/41 (31%)
Query: 68 GEKCLRPSLSELTCEEEVTAIMKRCWNEDPSERPDFTTLKA 108
G+ E E ++++ +DP +R
Sbjct: 210 GKPKPPFPPPEWDISPEAKDLIRKLLVKDPEKRLTAEEALQ 250
>gnl|CDD|180486 PRK06246, PRK06246, fumarate hydratase; Provisional.
Length = 280
Score = 25.9 bits (58), Expect = 5.1
Identities = 11/21 (52%), Positives = 12/21 (57%), Gaps = 2/21 (9%)
Query: 11 LRDEIVESVRKG--EKCLRPN 29
L D I E VRKG E LR +
Sbjct: 89 LEDAINEGVRKGYEEGYLRKS 109
>gnl|CDD|223101 COG0022, AcoB, Pyruvate/2-oxoglutarate dehydrogenase complex,
dehydrogenase (E1) component, eukaryotic type, beta
subunit [Energy production and conversion].
Length = 324
Score = 26.0 bits (58), Expect = 5.5
Identities = 9/28 (32%), Positives = 15/28 (53%), Gaps = 4/28 (14%)
Query: 3 VELSDLRILR----DEIVESVRKGEKCL 26
E+ DLR L + I+ SV+K + +
Sbjct: 229 AEVIDLRTLSPLDKETIIASVKKTGRLV 256
>gnl|CDD|133209 cd05078, PTK_Jak2_Jak3_rpt1, Pseudokinase (repeat 1) domain of the
Protein Tyrosine Kinases, Janus kinases 2 and 3.
Protein Tyrosine Kinase (PTK) family; Janus kinase 2
(Jak2) and Jak3; pseudokinase domain (repeat 1). The
PTKc (catalytic domain) family to which this subfamily
belongs, is part of a larger superfamily that includes
the catalytic domains of other kinases such as protein
serine/threonine kinases, RIO kinases, and
phosphoinositide 3-kinase (PI3K). PTKs catalyze the
transfer of the gamma-phosphoryl group from ATP to
tyrosine (tyr) residues in protein substrates. Jak2 and
Jak3 are members of the Janus kinase (Jak) subfamily of
proteins, which are cytoplasmic (or nonreceptor) tyr
kinases containing an N-terminal FERM domain, followed
by a Src homology 2 (SH2) domain, a pseudokinase domain,
and a C-terminal tyr kinase domain. The pseudokinase
domain shows similarity to tyr kinases but lacks crucial
residues for catalytic activity and ATP binding. It
modulates the kinase activity of the C-terminal
catalytic domain. Jaks are crucial for cytokine receptor
signaling. They are activated by autophosphorylation
upon cytokine-induced receptor aggregation, and
subsequently trigger downstream signaling events such as
the phosphorylation of signal transducers and activators
of transcription (STATs). Jak2 is widely expressed in
many tissues while Jak3 is expressed only in
hematopoietic cells. Jak2 is essential for the signaling
of hormone-like cytokines such as growth hormone,
erythropoietin, thrombopoietin, and prolactin, as well
as some IFNs and cytokines that signal through the IL-3
and gp130 receptors. Jak3 binds the shared receptor
subunit common gamma chain and thus, is essential in the
signaling of cytokines that use it such as IL-2, IL-4,
IL-7, IL-9, IL-15, and IL-21. Disruption of Jak2 in mice
results in an embryonic lethal phenotype with multiple
defects including erythropoietic and cardiac
abnormalities. It is the only Jak gene that results in a
lethal phenotype when disrupted in mice. A mutation in
the pseudokinase domain of Jak2, V617F, is present in
many myeloproliferative diseases, including almost all
patients with polycythemia vera, and 50% of patients
with essential thrombocytosis and myelofibrosis. Jak3 is
important in lymphoid development and myeloid cell
differentiation. Inactivating mutations in Jak3 have
been reported in humans with severe combined
immunodeficiency (SCID).
Length = 258
Score = 25.6 bits (56), Expect = 7.1
Identities = 11/31 (35%), Positives = 18/31 (58%), Gaps = 3/31 (9%)
Query: 84 EVTAIMKRCWNEDPSERPDFTTLKAAIRKLN 114
E+ ++ +C + +P RP F +A IR LN
Sbjct: 231 ELANLINQCMDYEPDFRPSF---RAIIRDLN 258
>gnl|CDD|235688 PRK06064, PRK06064, acetyl-CoA acetyltransferase; Provisional.
Length = 389
Score = 25.6 bits (57), Expect = 7.3
Identities = 8/12 (66%), Positives = 9/12 (75%)
Query: 98 SERPDFTTLKAA 109
+R DFTTL AA
Sbjct: 249 HDRKDFTTLDAA 260
>gnl|CDD|173638 cd05065, PTKc_EphR_B, Catalytic domain of the Protein Tyrosine
Kinases, Class EphB Ephrin Receptors. Protein Tyrosine
Kinase (PTK) family; Ephrin Receptor (EphR) subfamily;
class EphB receptors; catalytic (c) domain. The PTKc
family is part of a larger superfamily that includes the
catalytic domains of other kinases such as protein
serine/threonine kinases, RIO kinases, and
phosphoinositide 3-kinase (PI3K). PTKs catalyze the
transfer of the gamma-phosphoryl group from ATP to
tyrosine (tyr) residues in protein substrates. EphRs
comprise the largest subfamily of receptor tyr kinases
(RTKs). Class EphB receptors bind to transmembrane
ephrin-B ligands. There are six vertebrate EhpB
receptors (EphB1-6), which display promiscuous
interactions with three ephrin-B ligands. One exception
is EphB2, which also interacts with ephrin A5. EphRs
contain an ephrin-binding domain and two fibronectin
repeats extracellularly, a transmembrane segment, and a
cytoplasmic tyr kinase domain. Binding of the ephrin
ligand to EphR requires cell-cell contact since both are
anchored to the plasma membrane. The resulting
downstream signals occur bidirectionally in both
EphR-expressing cells (forward signaling) and
ephrin-expressing cells (reverse signaling). Ephrin/EphR
interaction mainly results in cell-cell repulsion or
adhesion. EphBRs play important roles in synapse
formation and plasticity, spine morphogenesis, axon
guidance, and angiogenesis. In the intestinal
epithelium, EphBRs are Wnt signaling target genes that
control cell compartmentalization. They function as
suppressors of color cancer progression.
Length = 269
Score = 25.6 bits (56), Expect = 7.7
Identities = 9/33 (27%), Positives = 17/33 (51%)
Query: 81 CEEEVTAIMKRCWNEDPSERPDFTTLKAAIRKL 113
C + +M CW +D + RP F + + + K+
Sbjct: 236 CPTALHQLMLDCWQKDRNARPKFGQIVSTLDKM 268
>gnl|CDD|173771 cd08529, STKc_FA2-like, Catalytic domain of the Protein
Serine/Threonine Kinase, Chlamydomonas reinhardtii FA2
and similar domains. Serine/Threonine Kinases (STKs),
Chlamydomonas reinhardtii FA2-like subfamily, catalytic
(c) domain. STKs catalyze the transfer of the
gamma-phosphoryl group from ATP to serine/threonine
residues on protein substrates. The Chlamydomonas
reinhardtii FA2-like subfamily belongs to the
(NIMA)-related kinase (Nek) family. The Nek family
includes seven different Chlamydomonas Neks (CNKs 1-6
and Fa2). This subfamily includes FA2 and CNK4. The Nek
family is part of a larger superfamily that includes the
catalytic domains of other protein STKs, protein
tyrosine kinases, RIO kinases, aminoglycoside
phosphotransferase, choline kinase, and phosphoinositide
3-kinase. Chlamydomonas reinhardtii FA2 was discovered
in a genetic screen for deflagellation-defective
mutants. It is essential for
basal-body/centriole-associated microtubule severing,
and plays a role in cell cycle progression. No cellular
function has yet been ascribed to CNK4.
Length = 256
Score = 25.5 bits (56), Expect = 8.2
Identities = 6/19 (31%), Positives = 11/19 (57%)
Query: 88 IMKRCWNEDPSERPDFTTL 106
++ +C +D +RPD L
Sbjct: 232 LIDQCLTKDYRQRPDTFQL 250
>gnl|CDD|234172 TIGR03345, VI_ClpV1, type VI secretion ATPase, ClpV1 family.
Members of this protein family are homologs of ClpB, an
ATPase associated with chaperone-related functions.
These ClpB homologs, designated ClpV1, are a key
component of the bacterial pathogenicity-associated type
VI secretion system [Protein fate, Protein and peptide
secretion and trafficking, Cellular processes,
Pathogenesis].
Length = 852
Score = 25.7 bits (57), Expect = 8.4
Identities = 10/25 (40%), Positives = 11/25 (44%), Gaps = 2/25 (8%)
Query: 87 AIMKRCWNEDPSERPDFTTLKAAIR 111
IM C DP PD L A+R
Sbjct: 722 LIMALC--ADPETAPDPEALLEALR 744
>gnl|CDD|238402 cd00779, ProRS_core_prok, Prolyl-tRNA synthetase (ProRS) class II
core catalytic domain. ProRS is a homodimer. It is
responsible for the attachment of proline to the 3' OH
group of ribose of the appropriate tRNA. This domain is
primarily responsible for ATP-dependent formation of the
enzyme bound aminoacyl-adenylate. Class II assignment is
based upon its structure and the presence of three
characteristic sequence motifs in the core domain. This
subfamily contains the core domain of ProRS from
prokaryotes and from the mitochondria of eukaryotes.
Length = 255
Score = 25.2 bits (56), Expect = 8.6
Identities = 9/27 (33%), Positives = 12/27 (44%), Gaps = 6/27 (22%)
Query: 20 RKG-EKCLRPNLSELTCEEEVTAIMKR 45
R G E L P T EE +T ++
Sbjct: 83 RHGKEFLLGP-----THEEVITDLVAN 104
Score = 25.2 bits (56), Expect = 8.6
Identities = 9/27 (33%), Positives = 12/27 (44%), Gaps = 6/27 (22%)
Query: 66 RKG-EKCLRPSLSELTCEEEVTAIMKR 91
R G E L P T EE +T ++
Sbjct: 83 RHGKEFLLGP-----THEEVITDLVAN 104
>gnl|CDD|145959 pfam03085, RAP-1, Rhoptry-associated protein 1 (RAP-1). Members
of this family are found in Babesia species. Though not
in this Pfam family, rhoptry-associated proteins are
also found in Plasmodium falciparum. Indeed, animal
infection with Babesia may produce a pattern similar to
human malaria. Rhoptry organelles form part of the
apical complex in apicomplexan parasites.
Rhoptry-associated proteins are antigenic, and generate
partially protective immune responses in infected
mammals. Thus RAPs are among the targeted vaccine
antigens for babesial (and malarial) parasites.
However, RAP-1 proteins are encoded by by a multigene
family; thus RAP-1 proteins are polymorphic, with B and
T cell epitopes that are conserved among strains, but
not across species. Antibodies to Babesia RAP-1 may
also be helpful in the serological detection of Babesia
infections.
Length = 251
Score = 25.0 bits (55), Expect = 9.4
Identities = 13/39 (33%), Positives = 18/39 (46%), Gaps = 6/39 (15%)
Query: 8 LRILRDEIVESVRKGEKCLRPNLSELTCEEEVTAIMKRC 46
L + IV++V C + E TC E V A + RC
Sbjct: 28 LSNRNENIVDAV-----CEG-DPEESTCRESVNAYVARC 60
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
0.316 0.132 0.388
Gapped
Lambda K H
0.267 0.0807 0.140
Matrix: BLOSUM62
Gap Penalties: Existence: 11, Extension: 1
Number of Sequences: 44354
Number of Hits to DB: 5,725,012
Number of extensions: 473875
Number of successful extensions: 747
Number of sequences better than 10.0: 1
Number of HSP's gapped: 741
Number of HSP's successfully gapped: 230
Length of query: 116
Length of database: 10,937,602
Length adjustment: 79
Effective length of query: 37
Effective length of database: 7,433,636
Effective search space: 275044532
Effective search space used: 275044532
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 (21.6 bits)
S2: 53 (24.0 bits)