RPS-BLAST 2.2.26 [Sep-21-2011]
Database: CDD.v3.10
44,354 sequences; 10,937,602 total letters
Searching..................................................done
Query= psy15827
(101 letters)
>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 = 51.3 bits (123), Expect = 5e-09
Identities = 18/35 (51%), Positives = 24/35 (68%)
Query: 67 SDDKWEVPRQHIKVFDILGEGCFGQVWKCEALGID 101
D +WE+PR + + LGEG FGQV K EA+G+D
Sbjct: 3 LDPEWELPRDRLTLGKPLGEGAFGQVVKAEAVGLD 37
Score = 33.5 bits (77), Expect = 0.009
Identities = 10/27 (37%), Positives = 18/27 (66%)
Query: 1 MYYCWDKEPNERPNFTELCDLLEKLLL 27
M CW + P++RP F +L + L+++L
Sbjct: 267 MRDCWHEVPSQRPTFKQLVEDLDRMLT 293
>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 = 45.3 bits (107), Expect = 6e-07
Identities = 20/34 (58%), Positives = 23/34 (67%)
Query: 68 DDKWEVPRQHIKVFDILGEGCFGQVWKCEALGID 101
D KWE PR + + LGEGCFGQV + EA GID
Sbjct: 4 DPKWEFPRDRLVLGKPLGEGCFGQVVRAEAYGID 37
Score = 31.9 bits (72), Expect = 0.031
Identities = 13/36 (36%), Positives = 22/36 (61%), Gaps = 1/36 (2%)
Query: 1 MYYCWDKEPNERPNFTELCDLLEKLLLNETD-YIEL 35
M CW P +RP F +L + L+K+L ++ Y++L
Sbjct: 269 MRECWHAVPTQRPTFKQLVEALDKVLAAVSEEYLDL 304
>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 = 43.9 bits (103), Expect = 2e-06
Identities = 19/34 (55%), Positives = 22/34 (64%)
Query: 68 DDKWEVPRQHIKVFDILGEGCFGQVWKCEALGID 101
D +WE R + + LGEGCFGQV EALGID
Sbjct: 7 DPRWEFSRDKLTLGKPLGEGCFGQVVMAEALGID 40
Score = 26.9 bits (59), Expect = 1.9
Identities = 11/31 (35%), Positives = 18/31 (58%)
Query: 1 MYYCWDKEPNERPNFTELCDLLEKLLLNETD 31
M CW P+ RP F +L + L+++L T+
Sbjct: 272 MRDCWHAIPSHRPTFKQLVEDLDRILTLTTN 302
>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 = 42.7 bits (100), Expect = 5e-06
Identities = 19/35 (54%), Positives = 24/35 (68%)
Query: 67 SDDKWEVPRQHIKVFDILGEGCFGQVWKCEALGID 101
+D KWE+ R + + LGEGCFGQV EA+GID
Sbjct: 3 ADPKWELSRTRLTLGKPLGEGCFGQVVMAEAIGID 37
Score = 28.8 bits (64), Expect = 0.44
Identities = 14/37 (37%), Positives = 24/37 (64%), Gaps = 2/37 (5%)
Query: 1 MYYCWDKEPNERPNFTELCDLLEKLL-LNETD-YIEL 35
M CW P++RP F +L + L+++L + TD Y++L
Sbjct: 269 MRECWHAVPSQRPTFKQLVEDLDRVLTVTSTDEYLDL 305
>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 = 42.7 bits (100), Expect = 5e-06
Identities = 19/34 (55%), Positives = 24/34 (70%)
Query: 68 DDKWEVPRQHIKVFDILGEGCFGQVWKCEALGID 101
D +WEVPR + + LGEGCFGQV EA+G+D
Sbjct: 10 DPRWEVPRDRLVLGKPLGEGCFGQVVMAEAIGLD 43
Score = 27.7 bits (61), Expect = 1.1
Identities = 10/26 (38%), Positives = 17/26 (65%)
Query: 1 MYYCWDKEPNERPNFTELCDLLEKLL 26
M CW P++RP F +L + L+++L
Sbjct: 275 MRDCWHAVPSQRPTFKQLVEDLDRIL 300
>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 = 39.4 bits (92), Expect = 7e-05
Identities = 12/26 (46%), Positives = 16/26 (61%)
Query: 1 MYYCWDKEPNERPNFTELCDLLEKLL 26
M CW P +RP F+EL ++L LL
Sbjct: 309 MLDCWHNNPEDRPTFSELVEILGDLL 334
Score = 37.9 bits (88), Expect = 3e-04
Identities = 15/32 (46%), Positives = 20/32 (62%)
Query: 70 KWEVPRQHIKVFDILGEGCFGQVWKCEALGID 101
KWE PR +K+ LG G FG+V + A GI+
Sbjct: 1 KWEFPRDRLKLGKPLGRGAFGKVIQASAFGIE 32
>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 = 39.2 bits (91), Expect = 9e-05
Identities = 17/32 (53%), Positives = 21/32 (65%)
Query: 70 KWEVPRQHIKVFDILGEGCFGQVWKCEALGID 101
KWE PR +K+ LG G FGQV + +A GID
Sbjct: 1 KWEFPRDRLKLGKPLGRGAFGQVIEADAFGID 32
Score = 33.5 bits (76), Expect = 0.011
Identities = 13/26 (50%), Positives = 17/26 (65%)
Query: 1 MYYCWDKEPNERPNFTELCDLLEKLL 26
M CW EP++RP F+EL + L LL
Sbjct: 315 MLDCWHGEPSQRPTFSELVEHLGNLL 340
>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 = 39.1 bits (92), Expect = 1e-04
Identities = 11/23 (47%), Positives = 15/23 (65%)
Query: 1 MYYCWDKEPNERPNFTELCDLLE 23
M CW +P +RP F+EL + LE
Sbjct: 240 MLSCWQLDPEDRPTFSELVERLE 262
Score = 32.5 bits (75), Expect = 0.017
Identities = 10/20 (50%), Positives = 13/20 (65%)
Query: 82 DILGEGCFGQVWKCEALGID 101
LGEG FG+V+K + G D
Sbjct: 1 KKLGEGAFGEVYKGKLKGKD 20
>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 = 38.8 bits (91), Expect = 1e-04
Identities = 12/24 (50%), Positives = 17/24 (70%)
Query: 71 WEVPRQHIKVFDILGEGCFGQVWK 94
WE+PR+ +K+ LG G FG+VW
Sbjct: 1 WEIPRESLKLERKLGAGQFGEVWM 24
Score = 32.3 bits (74), Expect = 0.026
Identities = 13/23 (56%), Positives = 14/23 (60%)
Query: 1 MYYCWDKEPNERPNFTELCDLLE 23
M CWDK+P ERP F L LE
Sbjct: 237 MLQCWDKDPEERPTFEYLQSFLE 259
>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 = 38.7 bits (90), Expect = 2e-04
Identities = 11/26 (42%), Positives = 18/26 (69%)
Query: 1 MYYCWDKEPNERPNFTELCDLLEKLL 26
M CW+ EP ERP F+++ L+++ L
Sbjct: 348 MKMCWNLEPTERPTFSQISQLIQRQL 373
Score = 35.6 bits (82), Expect = 0.002
Identities = 13/33 (39%), Positives = 21/33 (63%)
Query: 68 DDKWEVPRQHIKVFDILGEGCFGQVWKCEALGI 100
++KWE PR +++ LG G FG+V + A G+
Sbjct: 30 NEKWEFPRDNLQFGKTLGAGAFGKVVEATAFGL 62
>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 = 37.5 bits (87), Expect = 4e-04
Identities = 13/26 (50%), Positives = 19/26 (73%)
Query: 1 MYYCWDKEPNERPNFTELCDLLEKLL 26
MY CW +P +RP FT+L ++LE +L
Sbjct: 248 MYSCWRADPKDRPTFTKLREVLENIL 273
>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 = 37.1 bits (87), Expect = 4e-04
Identities = 10/22 (45%), Positives = 16/22 (72%)
Query: 1 MYYCWDKEPNERPNFTELCDLL 22
M CW ++P +RP F+EL ++L
Sbjct: 237 MLQCWAEDPEDRPTFSELVEIL 258
Score = 29.4 bits (67), Expect = 0.25
Identities = 9/20 (45%), Positives = 11/20 (55%)
Query: 82 DILGEGCFGQVWKCEALGID 101
LGEG FG+V+K G
Sbjct: 5 KKLGEGAFGEVYKGTLKGKG 24
>gnl|CDD|197581 smart00219, TyrKc, Tyrosine kinase, catalytic domain.
Phosphotransferases. Tyrosine-specific kinase subfamily.
Length = 257
Score = 37.1 bits (87), Expect = 4e-04
Identities = 10/22 (45%), Positives = 16/22 (72%)
Query: 1 MYYCWDKEPNERPNFTELCDLL 22
M CW ++P +RP F+EL ++L
Sbjct: 236 MLQCWAEDPEDRPTFSELVEIL 257
Score = 29.4 bits (67), Expect = 0.25
Identities = 9/20 (45%), Positives = 12/20 (60%)
Query: 82 DILGEGCFGQVWKCEALGID 101
LGEG FG+V+K + G
Sbjct: 5 KKLGEGAFGEVYKGKLKGKG 24
>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 = 37.0 bits (85), Expect = 5e-04
Identities = 12/24 (50%), Positives = 19/24 (79%)
Query: 71 WEVPRQHIKVFDILGEGCFGQVWK 94
WE+PR+ +++ LG+GCFG+VW
Sbjct: 1 WEIPRESLRLEVKLGQGCFGEVWM 24
Score = 30.4 bits (68), Expect = 0.10
Identities = 13/23 (56%), Positives = 13/23 (56%)
Query: 1 MYYCWDKEPNERPNFTELCDLLE 23
M CW KEP ERP F L LE
Sbjct: 236 MCQCWRKEPEERPTFEYLQAFLE 258
>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 = 36.9 bits (86), Expect = 5e-04
Identities = 11/26 (42%), Positives = 18/26 (69%)
Query: 1 MYYCWDKEPNERPNFTELCDLLEKLL 26
M CW K+ NERP F+++ L+K++
Sbjct: 241 MLDCWQKDRNERPTFSQIVSTLDKMI 266
>gnl|CDD|219530 pfam07714, Pkinase_Tyr, Protein tyrosine kinase.
Length = 258
Score = 36.7 bits (86), Expect = 5e-04
Identities = 10/22 (45%), Positives = 14/22 (63%)
Query: 1 MYYCWDKEPNERPNFTELCDLL 22
M CW +P +RP F+EL + L
Sbjct: 237 MLQCWAYDPEDRPTFSELVEDL 258
Score = 28.2 bits (64), Expect = 0.62
Identities = 9/18 (50%), Positives = 11/18 (61%)
Query: 84 LGEGCFGQVWKCEALGID 101
LGEG FG+V+K G
Sbjct: 7 LGEGAFGEVYKGTLKGDG 24
>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 = 36.9 bits (85), Expect = 6e-04
Identities = 11/28 (39%), Positives = 19/28 (67%)
Query: 1 MYYCWDKEPNERPNFTELCDLLEKLLLN 28
M CW +EP++RP F ++ LEK+++
Sbjct: 262 MLTCWKQEPDKRPTFADISKELEKMMVK 289
>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 = 36.7 bits (85), Expect = 6e-04
Identities = 11/26 (42%), Positives = 16/26 (61%)
Query: 1 MYYCWDKEPNERPNFTELCDLLEKLL 26
M CWD +P +RP F ++ L+ K L
Sbjct: 277 MKTCWDADPLKRPTFKQIVQLIGKQL 302
Score = 34.4 bits (79), Expect = 0.004
Identities = 14/33 (42%), Positives = 19/33 (57%)
Query: 68 DDKWEVPRQHIKVFDILGEGCFGQVWKCEALGI 100
D KWE PR ++ LG G FG+V + A G+
Sbjct: 27 DLKWEFPRNNLSFGKTLGAGAFGKVVEATAYGL 59
>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 = 36.6 bits (84), Expect = 7e-04
Identities = 12/23 (52%), Positives = 19/23 (82%)
Query: 71 WEVPRQHIKVFDILGEGCFGQVW 93
WE+PR+ +++ LG+GCFG+VW
Sbjct: 1 WEIPRESLRLDVKLGQGCFGEVW 23
Score = 31.2 bits (70), Expect = 0.067
Identities = 11/23 (47%), Positives = 14/23 (60%)
Query: 1 MYYCWDKEPNERPNFTELCDLLE 23
M CW K+P+ERP F + LE
Sbjct: 236 MKLCWKKDPDERPTFEYIQSFLE 258
>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 = 36.0 bits (83), Expect = 0.001
Identities = 12/26 (46%), Positives = 18/26 (69%)
Query: 1 MYYCWDKEPNERPNFTELCDLLEKLL 26
M CW K+ NERP F ++ +L+KL+
Sbjct: 242 MLDCWQKDRNERPKFEQIVSILDKLI 267
>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 = 36.1 bits (83), Expect = 0.001
Identities = 14/32 (43%), Positives = 21/32 (65%)
Query: 70 KWEVPRQHIKVFDILGEGCFGQVWKCEALGID 101
+WE PR +++ +LG G FG+V + A GID
Sbjct: 1 QWEFPRDRLRLGKVLGHGAFGKVVEASAFGID 32
Score = 34.2 bits (78), Expect = 0.005
Identities = 12/26 (46%), Positives = 16/26 (61%)
Query: 1 MYYCWDKEPNERPNFTELCDLLEKLL 26
M CW +P ERP F+ L ++L LL
Sbjct: 310 MLACWQGDPKERPTFSALVEILGDLL 335
>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 = 36.1 bits (83), Expect = 0.001
Identities = 11/26 (42%), Positives = 17/26 (65%)
Query: 1 MYYCWDKEPNERPNFTELCDLLEKLL 26
M CW KE ERP F+++ +L K++
Sbjct: 241 MLDCWQKERGERPRFSQIHSILSKMV 266
>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 = 36.1 bits (83), Expect = 0.001
Identities = 11/23 (47%), Positives = 17/23 (73%)
Query: 71 WEVPRQHIKVFDILGEGCFGQVW 93
WE+PR+ +++ LG G FG+VW
Sbjct: 1 WEIPRESLQLIKKLGNGQFGEVW 23
Score = 31.9 bits (72), Expect = 0.029
Identities = 12/23 (52%), Positives = 13/23 (56%)
Query: 1 MYYCWDKEPNERPNFTELCDLLE 23
M CW K+P ERP F L LE
Sbjct: 236 MLQCWKKDPEERPTFEYLQSFLE 258
>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 = 35.2 bits (81), Expect = 0.002
Identities = 13/23 (56%), Positives = 17/23 (73%)
Query: 71 WEVPRQHIKVFDILGEGCFGQVW 93
WEVPR+ +K+ LG G FG+VW
Sbjct: 1 WEVPRETLKLVKKLGAGQFGEVW 23
Score = 30.2 bits (68), Expect = 0.11
Identities = 11/23 (47%), Positives = 14/23 (60%)
Query: 1 MYYCWDKEPNERPNFTELCDLLE 23
M CW ++P ERP F L +LE
Sbjct: 236 MRLCWKEKPEERPTFEYLRSVLE 258
>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 = 35.0 bits (80), Expect = 0.003
Identities = 13/23 (56%), Positives = 17/23 (73%)
Query: 71 WEVPRQHIKVFDILGEGCFGQVW 93
WE+PR+ IK+ LG G FG+VW
Sbjct: 1 WEIPRESIKLVKKLGAGQFGEVW 23
Score = 25.4 bits (55), Expect = 5.5
Identities = 9/23 (39%), Positives = 13/23 (56%)
Query: 1 MYYCWDKEPNERPNFTELCDLLE 23
M CW ++ ERP F L +L+
Sbjct: 237 MKTCWKEKAEERPTFDYLQSVLD 259
>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 = 34.6 bits (79), Expect = 0.004
Identities = 13/26 (50%), Positives = 18/26 (69%)
Query: 1 MYYCWDKEPNERPNFTELCDLLEKLL 26
M CW+ EP +RP+F L D++E LL
Sbjct: 373 MVKCWNSEPEKRPSFLHLSDIVESLL 398
Score = 32.3 bits (73), Expect = 0.027
Identities = 19/53 (35%), Positives = 28/53 (52%), Gaps = 1/53 (1%)
Query: 48 SLSGEKLSNIMNDPVLNQKSDDKWEVPRQHIKVFDILGEGCFGQVWKCEALGI 100
S+S + I DP + D +WE PR + + ILG G FG+V + A G+
Sbjct: 10 SISPDGHEYIYVDP-MQLPYDSRWEFPRDGLVLGRILGSGAFGKVVEGTAYGL 61
>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 = 34.3 bits (79), Expect = 0.005
Identities = 13/29 (44%), Positives = 17/29 (58%)
Query: 1 MYYCWDKEPNERPNFTELCDLLEKLLLNE 29
M CW +P++RP FTEL L +L E
Sbjct: 241 MTKCWAYDPSKRPRFTELKAQLSDILQEE 269
>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 = 33.8 bits (77), Expect = 0.007
Identities = 15/29 (51%), Positives = 21/29 (72%)
Query: 72 EVPRQHIKVFDILGEGCFGQVWKCEALGI 100
E PRQ +++ + LGEG FG+V CEA G+
Sbjct: 1 EFPRQQLRLKEKLGEGQFGEVHLCEAEGL 29
>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 = 33.6 bits (77), Expect = 0.009
Identities = 11/24 (45%), Positives = 15/24 (62%)
Query: 71 WEVPRQHIKVFDILGEGCFGQVWK 94
WE PR+ + LG G FG+VW+
Sbjct: 1 WERPREEFTLERKLGSGYFGEVWE 24
Score = 28.2 bits (63), Expect = 0.59
Identities = 10/22 (45%), Positives = 13/22 (59%)
Query: 1 MYYCWDKEPNERPNFTELCDLL 22
M CW EP +RP+F L + L
Sbjct: 237 MLECWAAEPEDRPSFKALREEL 258
>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 = 33.3 bits (76), Expect = 0.010
Identities = 14/33 (42%), Positives = 18/33 (54%)
Query: 68 DDKWEVPRQHIKVFDILGEGCFGQVWKCEALGI 100
D KWE PR + LG G FG+V + A G+
Sbjct: 27 DHKWEFPRNRLSFGKTLGAGAFGKVVEATAYGL 59
Score = 31.0 bits (70), Expect = 0.072
Identities = 11/26 (42%), Positives = 17/26 (65%)
Query: 1 MYYCWDKEPNERPNFTELCDLLEKLL 26
M CWD +P +RP F ++ L+E+ L
Sbjct: 350 MKSCWDADPLKRPTFKQIVQLIEQQL 375
>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 = 33.5 bits (77), Expect = 0.010
Identities = 13/30 (43%), Positives = 20/30 (66%)
Query: 71 WEVPRQHIKVFDILGEGCFGQVWKCEALGI 100
WE+PR+ I + LG+G FG V++ A G+
Sbjct: 1 WELPREKITLIRELGQGSFGMVYEGLAKGV 30
Score = 30.8 bits (70), Expect = 0.086
Identities = 9/23 (39%), Positives = 11/23 (47%)
Query: 1 MYYCWDKEPNERPNFTELCDLLE 23
M CW P RP F E+ L+
Sbjct: 254 MRMCWQYNPKMRPTFLEIVSSLK 276
>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 = 33.0 bits (75), Expect = 0.012
Identities = 12/26 (46%), Positives = 14/26 (53%)
Query: 1 MYYCWDKEPNERPNFTELCDLLEKLL 26
M CW EP RP+F L D LE +
Sbjct: 248 MCQCWSPEPKCRPSFQHLRDQLELIW 273
>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 = 33.0 bits (75), Expect = 0.015
Identities = 11/26 (42%), Positives = 17/26 (65%)
Query: 1 MYYCWDKEPNERPNFTELCDLLEKLL 26
M CW ++ RP F ++ +LL+KLL
Sbjct: 243 MLQCWQQDRARRPRFVDIVNLLDKLL 268
>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 = 32.8 bits (75), Expect = 0.015
Identities = 11/24 (45%), Positives = 16/24 (66%)
Query: 71 WEVPRQHIKVFDILGEGCFGQVWK 94
WE+ R I++ LG G FG+VW+
Sbjct: 1 WEIDRTSIQLLRKLGAGQFGEVWE 24
Score = 29.3 bits (66), Expect = 0.24
Identities = 10/23 (43%), Positives = 14/23 (60%)
Query: 1 MYYCWDKEPNERPNFTELCDLLE 23
M CW ++P++RP F L LE
Sbjct: 237 MLDCWKEDPDDRPTFETLQWKLE 259
>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 = 32.7 bits (74), Expect = 0.017
Identities = 12/23 (52%), Positives = 17/23 (73%)
Query: 71 WEVPRQHIKVFDILGEGCFGQVW 93
WE+PR+ +K+ LG G FG+VW
Sbjct: 1 WEIPRESLKLEKKLGAGQFGEVW 23
Score = 26.9 bits (59), Expect = 1.7
Identities = 9/23 (39%), Positives = 12/23 (52%)
Query: 1 MYYCWDKEPNERPNFTELCDLLE 23
M CW P ERP F + +L+
Sbjct: 236 MMRCWKNRPEERPTFEYIQSVLD 258
>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 = 32.0 bits (73), Expect = 0.026
Identities = 10/26 (38%), Positives = 18/26 (69%)
Query: 1 MYYCWDKEPNERPNFTELCDLLEKLL 26
M CW+ EP +RP+F +L ++++L
Sbjct: 259 MKLCWEAEPQDRPSFADLILIVDRLR 284
>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 = 32.2 bits (73), Expect = 0.027
Identities = 11/24 (45%), Positives = 16/24 (66%)
Query: 71 WEVPRQHIKVFDILGEGCFGQVWK 94
WEV R+ I + LG+G FG V++
Sbjct: 1 WEVSREKITLLRELGQGSFGMVYE 24
Score = 29.2 bits (65), Expect = 0.31
Identities = 11/26 (42%), Positives = 14/26 (53%)
Query: 1 MYYCWDKEPNERPNFTELCDLLEKLL 26
M CW P RP F E+ +LL+ L
Sbjct: 254 MRMCWQFNPKMRPTFLEIVNLLKDDL 279
>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 = 31.9 bits (72), Expect = 0.032
Identities = 18/53 (33%), Positives = 28/53 (52%), Gaps = 1/53 (1%)
Query: 48 SLSGEKLSNIMNDPVLNQKSDDKWEVPRQHIKVFDILGEGCFGQVWKCEALGI 100
S+S + I DP + D WE+PR ++ + LG G FG+V + A G+
Sbjct: 10 SVSSDGHEYIYVDP-MQLPYDSAWEMPRDNLVLGRTLGSGAFGRVVEATAHGL 61
Score = 28.4 bits (63), Expect = 0.52
Identities = 10/26 (38%), Positives = 17/26 (65%)
Query: 1 MYYCWDKEPNERPNFTELCDLLEKLL 26
M CW+++ RP+F++L L+ LL
Sbjct: 375 MQKCWEEKFEIRPDFSQLVHLVGDLL 400
>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 = 31.5 bits (71), Expect = 0.045
Identities = 12/24 (50%), Positives = 17/24 (70%)
Query: 1 MYYCWDKEPNERPNFTELCDLLEK 24
M CW+ EP +RP+F +L + LEK
Sbjct: 230 MTSCWETEPKKRPSFHKLREKLEK 253
Score = 25.3 bits (55), Expect = 5.7
Identities = 11/29 (37%), Positives = 17/29 (58%)
Query: 71 WEVPRQHIKVFDILGEGCFGQVWKCEALG 99
W + Q + + +I+GEG FG V + E G
Sbjct: 1 WLLNLQKLTLGEIIGEGEFGAVLQGEYTG 29
>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 = 31.5 bits (71), Expect = 0.046
Identities = 13/43 (30%), Positives = 21/43 (48%)
Query: 1 MYYCWDKEPNERPNFTELCDLLEKLLLNETDYIELERFPDHSY 43
M CW P ERP F ++ L ++L Y+ + F + +Y
Sbjct: 251 MRQCWRDRPYERPPFAQISVQLSRMLEARKAYVNMALFENFTY 293
>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 = 31.3 bits (71), Expect = 0.049
Identities = 10/22 (45%), Positives = 14/22 (63%)
Query: 1 MYYCWDKEPNERPNFTELCDLL 22
MY CW ++P +RP F +L L
Sbjct: 234 MYSCWHEKPEDRPAFKKLLSQL 255
>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 = 31.3 bits (71), Expect = 0.053
Identities = 10/25 (40%), Positives = 18/25 (72%)
Query: 1 MYYCWDKEPNERPNFTELCDLLEKL 25
M CW+ +P++RP+F+EL +E +
Sbjct: 259 MKECWNNDPSQRPSFSELALQVEAI 283
>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 = 31.2 bits (71), Expect = 0.057
Identities = 10/22 (45%), Positives = 14/22 (63%)
Query: 1 MYYCWDKEPNERPNFTELCDLL 22
M CW +P ERP+F++L L
Sbjct: 252 MACCWALDPEERPSFSQLVQCL 273
>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 = 31.2 bits (70), Expect = 0.061
Identities = 13/30 (43%), Positives = 19/30 (63%)
Query: 71 WEVPRQHIKVFDILGEGCFGQVWKCEALGI 100
WEV R+ I + LG+G FG V++ A G+
Sbjct: 1 WEVAREKITMSRELGQGSFGMVYEGIAKGV 30
>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 = 31.3 bits (71), Expect = 0.062
Identities = 11/25 (44%), Positives = 14/25 (56%)
Query: 72 EVPRQHIKVFDILGEGCFGQVWKCE 96
V R I + LGEG FG+V+ E
Sbjct: 1 HVQRDTIVLKRELGEGAFGKVFLGE 25
Score = 29.7 bits (67), Expect = 0.21
Identities = 8/24 (33%), Positives = 15/24 (62%)
Query: 1 MYYCWDKEPNERPNFTELCDLLEK 24
M CW ++P +R N ++ + L+K
Sbjct: 257 MLGCWKRDPQQRINIKDIHERLQK 280
>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 = 31.1 bits (70), Expect = 0.071
Identities = 12/43 (27%), Positives = 22/43 (51%)
Query: 1 MYYCWDKEPNERPNFTELCDLLEKLLLNETDYIELERFPDHSY 43
M CW ++P ERP+F ++ L ++L Y+ + +Y
Sbjct: 256 MRQCWREKPYERPSFAQILVSLNRMLEERKTYVNTTLYEKFTY 298
Score = 25.7 bits (56), Expect = 5.1
Identities = 11/17 (64%), Positives = 13/17 (76%)
Query: 78 IKVFDILGEGCFGQVWK 94
IK D++GEG FGQV K
Sbjct: 9 IKFQDVIGEGNFGQVLK 25
>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 = 30.8 bits (69), Expect = 0.072
Identities = 12/26 (46%), Positives = 14/26 (53%)
Query: 1 MYYCWDKEPNERPNFTELCDLLEKLL 26
M CW P +RP+F L LEK L
Sbjct: 247 MSSCWLLNPKDRPSFETLRCELEKAL 272
>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 = 31.0 bits (70), Expect = 0.075
Identities = 10/26 (38%), Positives = 16/26 (61%)
Query: 1 MYYCWDKEPNERPNFTELCDLLEKLL 26
M CW K+ N RP F ++ L+K++
Sbjct: 244 MLDCWQKDRNARPKFGQIVSTLDKMI 269
>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 = 30.8 bits (70), Expect = 0.076
Identities = 15/29 (51%), Positives = 19/29 (65%)
Query: 72 EVPRQHIKVFDILGEGCFGQVWKCEALGI 100
E PRQ + + LGEG FG+V CEA G+
Sbjct: 1 EFPRQPLNFVEKLGEGQFGEVHLCEADGL 29
Score = 26.5 bits (59), Expect = 2.6
Identities = 8/22 (36%), Positives = 12/22 (54%)
Query: 1 MYYCWDKEPNERPNFTELCDLL 22
M CW ++ +RP F E+ L
Sbjct: 273 MLECWRRDEEDRPTFREIHLFL 294
>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 = 30.9 bits (70), Expect = 0.079
Identities = 10/24 (41%), Positives = 14/24 (58%)
Query: 1 MYYCWDKEPNERPNFTELCDLLEK 24
M CW P +RP+F+EL L +
Sbjct: 252 MTRCWAVNPKDRPSFSELVSALGE 275
Score = 28.2 bits (63), Expect = 0.70
Identities = 11/29 (37%), Positives = 18/29 (62%)
Query: 73 VPRQHIKVFDILGEGCFGQVWKCEALGID 101
PR +++ LG G FG+V+ +A GI+
Sbjct: 2 FPRSNLQEITTLGRGEFGEVFLAKAKGIE 30
>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 = 30.4 bits (69), Expect = 0.10
Identities = 9/22 (40%), Positives = 11/22 (50%)
Query: 1 MYYCWDKEPNERPNFTELCDLL 22
M CW P +RP F L + L
Sbjct: 234 MLQCWAHNPADRPTFAALREFL 255
>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 = 30.3 bits (68), Expect = 0.11
Identities = 12/25 (48%), Positives = 16/25 (64%)
Query: 72 EVPRQHIKVFDILGEGCFGQVWKCE 96
+ PR H+ + LGEG FG+V CE
Sbjct: 1 KFPRGHLLFKEKLGEGQFGEVHLCE 25
Score = 25.7 bits (56), Expect = 4.7
Identities = 8/22 (36%), Positives = 14/22 (63%)
Query: 1 MYYCWDKEPNERPNFTELCDLL 22
M CW ++ ERP+F+++ L
Sbjct: 281 MLQCWSRDCRERPSFSDIHAFL 302
>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 = 30.2 bits (68), Expect = 0.12
Identities = 11/29 (37%), Positives = 19/29 (65%)
Query: 72 EVPRQHIKVFDILGEGCFGQVWKCEALGI 100
E PR +I+ +G+G FG+V++ A G+
Sbjct: 1 EYPRNNIEYVRDIGQGAFGRVFQARAPGL 29
Score = 29.0 bits (65), Expect = 0.33
Identities = 9/24 (37%), Positives = 16/24 (66%)
Query: 1 MYYCWDKEPNERPNFTELCDLLEK 24
M CW K P++RP+F + +L++
Sbjct: 265 MRLCWSKLPSDRPSFASINRILQR 288
>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 = 30.2 bits (68), Expect = 0.12
Identities = 9/18 (50%), Positives = 12/18 (66%)
Query: 1 MYYCWDKEPNERPNFTEL 18
MY CW ++ ERP F +L
Sbjct: 234 MYSCWHEKAEERPTFQQL 251
>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 = 30.1 bits (68), Expect = 0.14
Identities = 10/26 (38%), Positives = 15/26 (57%)
Query: 1 MYYCWDKEPNERPNFTELCDLLEKLL 26
M CW +P RP F+EL +E++
Sbjct: 235 MLSCWHPKPEMRPTFSELVSRIEQIF 260
>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 = 30.1 bits (68), Expect = 0.14
Identities = 12/28 (42%), Positives = 18/28 (64%)
Query: 72 EVPRQHIKVFDILGEGCFGQVWKCEALG 99
E+P ++ + LGEG FG+V+K E G
Sbjct: 1 EIPLSAVRFLEELGEGAFGKVYKGELTG 28
Score = 25.5 bits (56), Expect = 6.1
Identities = 7/18 (38%), Positives = 11/18 (61%)
Query: 1 MYYCWDKEPNERPNFTEL 18
M CW++ P RP F ++
Sbjct: 259 MIECWNEIPARRPRFKDI 276
>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 = 29.7 bits (67), Expect = 0.16
Identities = 8/29 (27%), Positives = 15/29 (51%)
Query: 71 WEVPRQHIKVFDILGEGCFGQVWKCEALG 99
W + + +K+ +G+G FG V + G
Sbjct: 1 WAINSKELKLGATIGKGEFGDVMLGDYRG 29
Score = 29.7 bits (67), Expect = 0.18
Identities = 10/25 (40%), Positives = 15/25 (60%), Gaps = 3/25 (12%)
Query: 1 MYYCWDKEPNERPNFTELCDLLEKL 25
M CW+ +P +RP F + L E+L
Sbjct: 232 MKDCWELDPAKRPTFKQ---LREQL 253
>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 = 29.7 bits (67), Expect = 0.17
Identities = 9/24 (37%), Positives = 15/24 (62%)
Query: 1 MYYCWDKEPNERPNFTELCDLLEK 24
M CW +P RP+F+E+ + L+
Sbjct: 228 MLQCWAYDPENRPSFSEIYNELQI 251
>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 = 29.7 bits (67), Expect = 0.21
Identities = 13/30 (43%), Positives = 17/30 (56%)
Query: 72 EVPRQHIKVFDILGEGCFGQVWKCEALGID 101
EVPR I + LG G FG+V++ G D
Sbjct: 2 EVPRDSITLLRALGHGAFGEVYEGLYRGRD 31
Score = 29.3 bits (66), Expect = 0.26
Identities = 10/25 (40%), Positives = 14/25 (56%), Gaps = 3/25 (12%)
Query: 1 MYYCWDKEPNERPNFTELCDLLEKL 25
M CW P +RPNF +LE++
Sbjct: 254 MTDCWQHTPEDRPNFA---TILERI 275
>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 = 29.5 bits (66), Expect = 0.21
Identities = 14/29 (48%), Positives = 19/29 (65%)
Query: 72 EVPRQHIKVFDILGEGCFGQVWKCEALGI 100
E PR+ + + LGEG FG+V CEA G+
Sbjct: 1 EFPRKRLTFKEKLGEGQFGEVHLCEAEGM 29
>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 = 29.4 bits (66), Expect = 0.26
Identities = 10/18 (55%), Positives = 12/18 (66%)
Query: 1 MYYCWDKEPNERPNFTEL 18
MY CW ++P RP F EL
Sbjct: 234 MYSCWHEKPEGRPTFAEL 251
>gnl|CDD|176510 cd08567, GDPD_SpGDE_like, Glycerophosphodiester phosphodiesterase
domain of putative Silicibacter pomeroyi
glycerophosphodiester phosphodiesterase and similar
proteins. This subfamily corresponds to the
glycerophosphodiester phosphodiesterase domain (GDPD)
present in a group of uncharacterized bacterial
glycerophosphodiester phosphodiesterases (GP-GDE, EC
3.1.4.46) and similar proteins. The prototype of this CD
is a putative GP-GDE from Silicibacter pomeroyi (SpGDE).
It shows high sequence similarity to Escherichia coli
GP-GDE, which catalyzes the degradation of
glycerophosphodiesters to produce
sn-glycerol-3-phosphate (G3P) and the corresponding
alcohols.
Length = 263
Score = 28.0 bits (63), Expect = 0.61
Identities = 9/38 (23%), Positives = 15/38 (39%), Gaps = 1/38 (2%)
Query: 10 NERPNFTELCDLLEKLLLNETDY-IELERFPDHSYYNM 46
P E+ L+EK + + IE + PD +
Sbjct: 107 TRIPTLEEVFALVEKYGNQKVRFNIETKSDPDRDILHP 144
>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 = 28.1 bits (63), Expect = 0.64
Identities = 9/22 (40%), Positives = 11/22 (50%)
Query: 1 MYYCWDKEPNERPNFTELCDLL 22
M CW P +RP F+EL
Sbjct: 231 MLSCWKYRPEDRPTFSELESTF 252
>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 = 28.0 bits (62), Expect = 0.65
Identities = 10/18 (55%), Positives = 12/18 (66%)
Query: 1 MYYCWDKEPNERPNFTEL 18
M CWD +P RP F+EL
Sbjct: 227 MQRCWDYKPENRPKFSEL 244
>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 = 28.3 bits (63), Expect = 0.65
Identities = 9/25 (36%), Positives = 14/25 (56%)
Query: 1 MYYCWDKEPNERPNFTELCDLLEKL 25
M CW+ E RP F L +L+++
Sbjct: 257 MKNCWETEAKFRPTFRSLIPILKEM 281
>gnl|CDD|215690 pfam00069, Pkinase, Protein kinase domain.
Length = 260
Score = 28.0 bits (63), Expect = 0.83
Identities = 6/19 (31%), Positives = 12/19 (63%)
Query: 1 MYYCWDKEPNERPNFTELC 19
+ C +K+P++RP E+
Sbjct: 237 IKKCLNKDPSKRPTAEEIL 255
Score = 24.9 bits (55), Expect = 7.4
Identities = 7/18 (38%), Positives = 10/18 (55%)
Query: 78 IKVFDILGEGCFGQVWKC 95
++ LG G FG V+K
Sbjct: 1 YELLRKLGSGSFGTVYKA 18
>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 = 27.5 bits (61), Expect = 1.0
Identities = 9/26 (34%), Positives = 14/26 (53%)
Query: 1 MYYCWDKEPNERPNFTELCDLLEKLL 26
M CW P++RP+F E+ E +
Sbjct: 238 MRACWQWNPSDRPSFAEIHQAFETMF 263
>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 = 27.5 bits (61), Expect = 1.2
Identities = 9/23 (39%), Positives = 16/23 (69%)
Query: 1 MYYCWDKEPNERPNFTELCDLLE 23
M CW ++P+ERP F + ++L+
Sbjct: 246 MTNCWAQDPSERPTFDRIQEILQ 268
>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 = 27.3 bits (60), Expect = 1.3
Identities = 9/36 (25%), Positives = 18/36 (50%)
Query: 1 MYYCWDKEPNERPNFTELCDLLEKLLLNETDYIELE 36
M CW + RP F EL D ++ + + ++ ++
Sbjct: 244 MVKCWMIDSECRPRFRELVDEFSRMARDPSRFVVIQ 279
>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 = 27.3 bits (60), Expect = 1.5
Identities = 7/16 (43%), Positives = 12/16 (75%)
Query: 1 MYYCWDKEPNERPNFT 16
M CW+ +P +RP+F+
Sbjct: 229 MERCWEYDPGQRPSFS 244
>gnl|CDD|132943 cd06612, STKc_MST1_2, Catalytic domain of the Protein
Serine/Threonine Kinases, Mammalian Ste20-like protein
kinase 1 and 2. Serine/threonine kinases (STKs),
mammalian Ste20-like protein kinase 1 (MST1) and MST2
subfamily, catalytic (c) domain. STKs catalyze the
transfer of the gamma-phosphoryl group from ATP to
serine/threonine residues on protein substrates. The
MST1/2 subfamily 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. This subfamily is composed
of MST1, MST2, and related proteins including
Drosophila Hippo and Dictyostelium discoideum Krs1
(kinase responsive to stress 1). MST1/2 and Hippo are
involved in a conserved pathway that governs cell
contact inhibition, organ size control, and tumor
development. MST1 activates the mitogen-activated
protein kinases (MAPKs) p38 and c-Jun N-terminal kinase
(JNK) through MKK7 (a MAPK kinase) and MEKK1 (a MAPK
kinase kinase) by acting as a MAPK kinase kinase kinase
(MAPKKKK). Activation of JNK by MST1 leads to caspase
activation and apoptosis. MST1 has also been implicated
in cell proliferation and differentiation. Krs1 may
regulate cell growth arrest and apoptosis in response
to cellular stress.
Length = 256
Score = 26.8 bits (60), Expect = 1.7
Identities = 11/20 (55%), Positives = 14/20 (70%), Gaps = 3/20 (15%)
Query: 79 KVFDI---LGEGCFGQVWKC 95
+VFDI LGEG +G V+K
Sbjct: 3 EVFDILEKLGEGSYGSVYKA 22
>gnl|CDD|140307 PTZ00284, PTZ00284, protein kinase; Provisional.
Length = 467
Score = 26.5 bits (58), Expect = 3.0
Identities = 10/21 (47%), Positives = 14/21 (66%)
Query: 72 EVPRQHIKVFDILGEGCFGQV 92
+V Q K+ +LGEG FG+V
Sbjct: 125 DVSTQRFKILSLLGEGTFGKV 145
>gnl|CDD|236673 PRK10340, ebgA, cryptic beta-D-galactosidase subunit alpha;
Reviewed.
Length = 1021
Score = 26.6 bits (59), Expect = 3.0
Identities = 18/54 (33%), Positives = 27/54 (50%), Gaps = 12/54 (22%)
Query: 9 PNERPNFTELCDLLEKLLLNETDYIELERFPDHSYYNMVSLSGEKLSNIMNDPV 62
PN+ P F ELCD+ ++ ETD +E H + N+ +S I +DP
Sbjct: 378 PND-PRFYELCDIYGLFVMAETD---VE---SHGFANV-----GDISRITDDPQ 419
>gnl|CDD|239459 cd03343, cpn60, cpn60 chaperonin family. Chaperonins are involved
in productive folding of proteins. They share a common
general morphology, a double toroid of 2 stacked rings.
Archaeal cpn60 (thermosome), together with TF55 from
thermophilic bacteria and the eukaryotic cytosol
chaperonin (CTT), belong to the type II group of
chaperonins. Cpn60 consists of two stacked octameric
rings, which are composed of one or two different
subunits. Their common function is to sequester
nonnative proteins inside their central cavity and
promote folding by using energy derived from ATP
hydrolysis.
Length = 517
Score = 26.5 bits (59), Expect = 3.1
Identities = 14/44 (31%), Positives = 24/44 (54%), Gaps = 9/44 (20%)
Query: 46 MVSLSG-------EKLSNIMNDPVLN--QKSDDKWEVPRQHIKV 80
SL+G +KL++++ D VL +K D K+ V +IK+
Sbjct: 151 KTSLTGKGAEAAKDKLADLVVDAVLQVAEKRDGKYVVDLDNIKI 194
>gnl|CDD|216080 pfam00721, TMV_coat, Virus coat protein (TMV like). This family
contains coat proteins from tobamoviruses,
hordeiviruses, Tobraviruses, Furoviruses and
Potyviruses.
Length = 146
Score = 25.7 bits (57), Expect = 3.3
Identities = 7/23 (30%), Positives = 13/23 (56%), Gaps = 2/23 (8%)
Query: 37 RFPDHSYYNMVSLSGEKLSNIMN 59
RFP +Y V L+ +L+ ++
Sbjct: 62 RFPAGGFY--VYLNDPRLAPLLT 82
>gnl|CDD|143338 cd07833, STKc_CDKL, Catalytic domain of Cyclin-Dependent protein
Kinase Like Serine/Threonine Kinases. Serine/Threonine
Kinases (STKs), Cyclin-dependent protein kinase like
(CDKL) subfamily, catalytic (c) domain. STKs catalyze
the transfer of the gamma-phosphoryl group from ATP to
serine/threonine residues on protein substrates. The
CDKL subfamily 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. CDKs belong to a large
family of STKs that are regulated by their cognate
cyclins. Together, they are involved in the control of
cell-cycle progression, transcription, and neuronal
function. This subfamily is composed of CDKL1-5 and
similar proteins. Some CDKLs, like CDKL1 and CDKL3, may
be implicated in transformation and others, like CDKL3
and CDKL5, are associated with mental retardation when
impaired. CDKL2 plays a role in learning and memory.
Length = 288
Score = 26.1 bits (58), Expect = 3.7
Identities = 8/17 (47%), Positives = 12/17 (70%)
Query: 79 KVFDILGEGCFGQVWKC 95
+V ++GEG +G V KC
Sbjct: 4 EVLGVVGEGAYGVVLKC 20
>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 = 25.7 bits (57), Expect = 4.0
Identities = 7/13 (53%), Positives = 8/13 (61%)
Query: 84 LGEGCFGQVWKCE 96
LGEG FG V+
Sbjct: 1 LGEGGFGTVYLAR 13
Score = 24.9 bits (55), Expect = 7.5
Identities = 5/18 (27%), Positives = 10/18 (55%)
Query: 1 MYYCWDKEPNERPNFTEL 18
+ K+P +RP+ E+
Sbjct: 194 IRKMLQKDPEKRPSAKEI 211
>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 = 25.8 bits (56), Expect = 4.2
Identities = 10/26 (38%), Positives = 17/26 (65%)
Query: 1 MYYCWDKEPNERPNFTELCDLLEKLL 26
M CW ++P ERP+F ++ L ++L
Sbjct: 244 MRQCWREKPYERPSFAQILVSLNRML 269
>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 = 25.7 bits (56), Expect = 4.3
Identities = 8/18 (44%), Positives = 13/18 (72%)
Query: 1 MYYCWDKEPNERPNFTEL 18
M +CW + P +RP+F+ L
Sbjct: 234 MQHCWKERPEDRPSFSLL 251
>gnl|CDD|214567 smart00220, S_TKc, Serine/Threonine protein kinases, catalytic
domain. Phosphotransferases. Serine or
threonine-specific kinase subfamily.
Length = 254
Score = 25.6 bits (57), Expect = 4.4
Identities = 7/15 (46%), Positives = 10/15 (66%)
Query: 82 DILGEGCFGQVWKCE 96
+ LGEG FG+V+
Sbjct: 5 EKLGEGSFGKVYLAR 19
>gnl|CDD|173672 cd05581, STKc_PDK1, Catalytic domain of the Protein
Serine/Threonine Kinase, Phosphoinositide-dependent
kinase 1. Serine/Threonine Kinases (STKs),
Phosphoinositide-dependent kinase 1 (PDK1) subfamily,
catalytic (c) domain. STKs catalyze the transfer of the
gamma-phosphoryl group from ATP to serine/threonine
residues on protein substrates. The PDK1 subfamily 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 (PI3K). PDK1 carries an
N-terminal catalytic domain and a C-terminal pleckstrin
homology (PH) domain that binds phosphoinositides. It
phosphorylates the activation loop of AGC kinases that
are regulated by PI3K such as PKB, SGK, and PKC, among
others, and is crucial for their activation. Thus, it
contributes in regulating many processes including
metabolism, growth, proliferation, and survival. PDK1
also has the ability to autophosphorylate and is
constitutively active in mammalian cells. PDK1 is
essential for normal embryo development and is
important in regulating cell volume.
Length = 280
Score = 25.6 bits (57), Expect = 4.4
Identities = 7/17 (41%), Positives = 8/17 (47%)
Query: 79 KVFDILGEGCFGQVWKC 95
K I+GEG F V
Sbjct: 4 KFGKIIGEGSFSTVVLA 20
>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 = 25.7 bits (56), Expect = 5.5
Identities = 10/25 (40%), Positives = 14/25 (56%)
Query: 1 MYYCWDKEPNERPNFTELCDLLEKL 25
M CW +EP +R N E+ +L L
Sbjct: 258 MLGCWQREPQQRLNIKEIYKILHAL 282
>gnl|CDD|173729 cd06617, PKc_MKK3_6, Catalytic domain of the dual-specificity
Protein Kinases, MAP kinase kinases 3 and 6. Protein
kinases (PKs), MAP kinase kinase 3 (MKK3) and MKK6
subfamily, catalytic (c) domain. PKs catalyze the
transfer of the gamma-phosphoryl group from ATP to
serine/threonine or tyrosine residues on protein
substrates. The MKK3 and MKK6 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 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).
MKK3 and MKK6 are dual-specificity PKs that
phosphorylate and activate their downstream target, p38
MAPK, on specific threonine and tyrosine residues.
MKK3/6 plays roles in the regulation of cell cycle
progression, cytokine- and stress-induced apoptosis,
oncogenic transformation, and adult tissue regeneration.
In addition, MKK6 plays a critical role in osteoclast
survival in inflammatory disease while MKK3 is
associated with tumor invasion, progression, and poor
patient survival in glioma.
Length = 283
Score = 25.5 bits (56), Expect = 6.1
Identities = 8/15 (53%), Positives = 9/15 (60%)
Query: 4 CWDKEPNERPNFTEL 18
C K ERPN+ EL
Sbjct: 244 CLKKNYKERPNYPEL 258
>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 = 25.3 bits (55), Expect = 6.2
Identities = 10/36 (27%), Positives = 17/36 (47%)
Query: 1 MYYCWDKEPNERPNFTELCDLLEKLLLNETDYIELE 36
M CW + + RP F EL K+ + Y+ ++
Sbjct: 244 MVKCWMIDADSRPKFRELIIEFSKMARDPQRYLVIQ 279
>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 = 25.5 bits (56), Expect = 6.2
Identities = 9/36 (25%), Positives = 17/36 (47%)
Query: 1 MYYCWDKEPNERPNFTELCDLLEKLLLNETDYIELE 36
+ CW + RP F EL + K+ + Y+ ++
Sbjct: 244 LVKCWMIDAESRPTFKELINEFSKMARDPQRYLVIQ 279
>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 = 25.3 bits (55), Expect = 6.2
Identities = 9/25 (36%), Positives = 14/25 (56%)
Query: 1 MYYCWDKEPNERPNFTELCDLLEKL 25
M CW + RP+F +L + LE +
Sbjct: 232 MKQCWHLDAATRPSFLQLREQLEHI 256
>gnl|CDD|173772 cd08530, STKc_CNK2-like, Catalytic domain of the Protein
Serine/Threonine Kinase, Chlamydomonas reinhardtii
CNK2, and similar domains. Serine/Threonine Kinases
(STKs), Chlamydomonas reinhardtii Never In Mitosis gene
A (NIMA)-related kinase 1 (CNK2)-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 CNK2-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 CNK1, and -2. 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
CNK2 has both cilliary and cell cycle functions. It
influences flagellar length through promoting flagellar
disassembly, and it regulates cell size, through
influencing the size threshold at which cells commit to
mitosis.
Length = 256
Score = 25.1 bits (55), Expect = 7.2
Identities = 9/20 (45%), Positives = 13/20 (65%)
Query: 79 KVFDILGEGCFGQVWKCEAL 98
KV LG+G +G V+K + L
Sbjct: 3 KVLKKLGKGSYGSVYKVKRL 22
>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 = 25.0 bits (54), Expect = 8.4
Identities = 11/25 (44%), Positives = 15/25 (60%)
Query: 1 MYYCWDKEPNERPNFTELCDLLEKL 25
M CW +EP+ R N E+ LL+ L
Sbjct: 255 MLGCWQREPHMRLNIKEIHSLLQNL 279
>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 = 25.0 bits (54), Expect = 8.4
Identities = 7/18 (38%), Positives = 12/18 (66%)
Query: 1 MYYCWDKEPNERPNFTEL 18
M CW++ P+ RP F ++
Sbjct: 259 MLECWNEFPSRRPRFKDI 276
>gnl|CDD|234433 TIGR03992, Arch_glmU, UDP-N-acetylglucosamine
diphosphorylase/glucosamine-1-phosphate
N-acetyltransferase. The MJ_1101 protein from
Methanococcus jannaschii has been characterized as the
GlmU enzyme catalyzing the final two steps of UDP-GlcNAc
biosynthesis. Many of the genes identified by this model
are in proximity to the GlmS and GlmM genes and are also
presumed to be GlmU. However, some archaeal genomes
contain multiple closely-related homologs from this
family and it is not clear what the substrate
specificity is for each of them.
Length = 393
Score = 24.9 bits (55), Expect = 9.1
Identities = 16/49 (32%), Positives = 25/49 (51%), Gaps = 1/49 (2%)
Query: 20 DLLEKLLLNETDYIELERFPDHSYYNMVSLSGEKLSNIMNDPVLNQKSD 68
DLLE+L+ E I + D S Y +V G +++ I+ P N S+
Sbjct: 112 DLLERLIRAEAPAIAVVEVDDPSDYGVVETDGGRVTGIVEKP-ENPPSN 159
>gnl|CDD|173753 cd07864, STKc_CDK12, Catalytic domain of the Serine/Threonine
Kinase, Cyclin-Dependent protein Kinase 12.
Serine/Threonine Kinases (STKs), Cyclin-Dependent
protein Kinase 12 (CDK12) subfamily, catalytic (c)
domain. STKs catalyze the transfer of the
gamma-phosphoryl group from ATP to serine/threonine
residues on protein substrates. The CDK12 subfamily 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. CDKs belong to a large
family of STKs that are regulated by their cognate
cyclins. Together, they are involved in the control of
cell-cycle progression, transcription, and neuronal
function. CDK12 is also called Cdc2-related protein
kinase 7 (CRK7) or Cdc2-related kinase
arginine/serine-rich (CrkRS). It is a unique CDK that
contains an arginine/serine-rich (RS) domain, which is
predominantly found in splicing factors. CDK12 is
widely expressed in tissues. It interacts with cyclins
L1 and L2, and plays roles in regulating transcription
and alternative splicing.
Length = 302
Score = 24.7 bits (54), Expect = 9.4
Identities = 7/18 (38%), Positives = 11/18 (61%)
Query: 77 HIKVFDILGEGCFGQVWK 94
+ +GEG +GQV+K
Sbjct: 8 KFDIIGQIGEGTYGQVYK 25
>gnl|CDD|237113 PRK12486, dmdA, putative dimethyl sulfoniopropionate demethylase;
Reviewed.
Length = 368
Score = 24.7 bits (54), Expect = 9.5
Identities = 11/34 (32%), Positives = 19/34 (55%), Gaps = 5/34 (14%)
Query: 39 PDHSYY-NMVSLSGEKLSNIMNDPVLNQKSDDKW 71
P YY +V +G ++NDPV + ++D+W
Sbjct: 89 PGQCYYVPIVDETG----GMLNDPVALKLAEDRW 118
Database: CDD.v3.10
Posted date: Mar 20, 2013 7:55 AM
Number of letters in database: 10,937,602
Number of sequences in database: 44,354
Lambda K H
0.319 0.140 0.452
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: 5,165,423
Number of extensions: 418231
Number of successful extensions: 614
Number of sequences better than 10.0: 1
Number of HSP's gapped: 614
Number of HSP's successfully gapped: 154
Length of query: 101
Length of database: 10,937,602
Length adjustment: 67
Effective length of query: 34
Effective length of database: 7,965,884
Effective search space: 270840056
Effective search space used: 270840056
Neighboring words threshold: 11
Window for multiple hits: 40
X1: 16 ( 7.4 bits)
X2: 38 (14.6 bits)
X3: 64 (24.7 bits)
S1: 41 (21.7 bits)
S2: 53 (24.0 bits)