RPS-BLAST 2.2.26 [Sep-21-2011]
Database: CDD.v3.10
44,354 sequences; 10,937,602 total letters
Searching..................................................done
Query= psy8666
(124 letters)
>gnl|CDD|143317 cd07693, Ig1_Robo, First immunoglobulin (Ig)-like domain in Robo
(roundabout) receptors and similar proteins. Ig1_Robo:
domain similar to the first immunoglobulin (Ig)-like
domain in Robo (roundabout) receptors. Robo receptors
play a role in the development of the central nervous
system (CNS), and are receptors of Slit protein. Slit is
a repellant secreted by the neural cells in the midline.
Slit acts through Robo to prevent most neurons from
crossing the midline from either side. Three mammalian
Robo homologs (robo1, -2, and -3), and three mammalian
Slit homologs (Slit-1,-2, -3), have been identified.
Commissural axons, which cross the midline, express low
levels of Robo; longitudinal axons, which avoid the
midline, express high levels of Robo. robo1, -2, and -3
are expressed by commissural neurons in the vertebrate
spinal cord and Slits 1, -2, -3 are expressed at the
ventral midline. Robo-3 is a divergent member of the
Robo family which instead of being a positive regulator
of slit responsiveness, antagonizes slit responsiveness
in precrossing axons. The Slit-Robo interaction is
mediated by the second leucine-rich repeat (LRR) domain
of Slit and the two N-terminal Ig domains of Robo, Ig1
and Ig2. The primary Robo binding site for Slit2 has
been shown by surface plasmon resonance experiments and
mutational analysis to be is the Ig1 domain, while the
Ig2 domain has been proposed to harbor a weak secondary
binding site.
Length = 100
Score = 153 bits (388), Expect = 8e-50
Identities = 56/90 (62%), Positives = 74/90 (82%), Gaps = 1/90 (1%)
Query: 1 MVVAKNEPVTLNCKAEGKPEPTIEWYKDGELVETSKSDAKSQRVILPTGSLFFLRVVHGK 60
++V+K +P TLNCKAEG+P PTI+W K+G+ +ET K D +S R++LP+GSLFFLRVVHG+
Sbjct: 11 LIVSKGDPATLNCKAEGRPTPTIQWLKNGQPLETDKDDPRSHRIVLPSGSLFFLRVVHGR 70
Query: 61 K-EQDGGVYWCLARNSVGTAVSRNATLQVA 89
K D GVY C+A NS+G AVSRNA+L+VA
Sbjct: 71 KGRSDEGVYVCVAHNSLGEAVSRNASLEVA 100
>gnl|CDD|143199 cd05722, Ig1_Neogenin, First immunoglobulin (Ig)-like domain in
neogenin and similar proteins. Ig1_Neogenin: first
immunoglobulin (Ig)-like domain in neogenin and related
proteins. Neogenin is a cell surface protein which is
expressed in the developing nervous system of
vertebrate embryos in the growing nerve cells. It is
also expressed in other embryonic tissues, and may play
a general role in developmental processes such as cell
migration, cell-cell recognition, and tissue growth
regulation. Included in this group is the tumor
suppressor protein DCC, which is deleted in colorectal
carcinoma . DCC and neogenin each have four Ig-like
domains followed by six fibronectin type III domains, a
transmembrane domain, and an intracellular domain.
Length = 95
Score = 73.3 bits (180), Expect = 3e-18
Identities = 41/83 (49%), Positives = 50/83 (60%), Gaps = 5/83 (6%)
Query: 8 PVTLNCKAEGKPEPTIEWYKDGELVETSKSDAKSQRVILPTGSLFFLRVVHGKKEQ-DGG 66
PV LNC AEG+P P IEW KDG L+ + +R LP GSL VVH K + D G
Sbjct: 16 PVVLNCSAEGEPPPKIEWKKDGVLLNLVSDE---RRQQLPNGSLLITSVVHSKHNKPDEG 72
Query: 67 VYWCLARN-SVGTAVSRNATLQV 88
Y C+A+N S+G+ VSR A L V
Sbjct: 73 FYQCVAQNDSLGSIVSRTARLTV 95
>gnl|CDD|197706 smart00408, IGc2, Immunoglobulin C-2 Type.
Length = 63
Score = 66.3 bits (162), Expect = 7e-16
Identities = 26/72 (36%), Positives = 34/72 (47%), Gaps = 10/72 (13%)
Query: 6 NEPVTLNCKAEGKPEPTIEWYKDGELVETSKSDAKSQRVILPTGSLFFLRVVHGKKEQDG 65
+ VTL C AEG P P I W KDG+ + S R + +L V +D
Sbjct: 2 GQSVTLTCPAEGNPVPNITWLKDGKPLPESN------RFVASGSTLTIKSV----SLEDS 51
Query: 66 GVYWCLARNSVG 77
G+Y C+A NS G
Sbjct: 52 GLYTCVAENSAG 63
>gnl|CDD|191810 pfam07679, I-set, Immunoglobulin I-set domain.
Length = 90
Score = 66.5 bits (163), Expect = 1e-15
Identities = 26/88 (29%), Positives = 40/88 (45%), Gaps = 7/88 (7%)
Query: 1 MVVAKNEPVTLNCKAEGKPEPTIEWYKDGELVETSKSDAKSQRVILPTGSLFFLRVVHGK 60
+ V + E C G P+PT+ W+KDG+ + +S + G + L +
Sbjct: 10 VEVQEGESARFTCTVTGDPDPTVSWFKDGQPLRSSDRF-----KVTYEGGTYTLT-ISNV 63
Query: 61 KEQDGGVYWCLARNSVGTAVSRNATLQV 88
+ D G Y C+A NS G A + A L V
Sbjct: 64 QPDDEGKYTCVATNSAGEAEAS-AELTV 90
>gnl|CDD|143201 cd05724, Ig2_Robo, Second immunoglobulin (Ig)-like domain in Robo
(roundabout) receptors. Ig2_Robo: domain similar to
the second immunoglobulin (Ig)-like domain in Robo
(roundabout) receptors. Robo receptors play a role in
the development of the central nervous system (CNS),
and are receptors of Slit protein. Slit is a repellant
secreted by the neural cells in the midline. Slit acts
through Robo to prevent most neurons from crossing the
midline from either side. Three mammalian Robo homologs
(robo1, -2, and -3), and three mammalian Slit homologs
(Slit-1,-2, -3), have been identified. Commissural
axons, which cross the midline, express low levels of
Robo; longitudinal axons, which avoid the midline,
express high levels of Robo. robo1, -2, and -3 are
expressed by commissural neurons in the vertebrate
spinal cord and Slits 1, -2, -3 are expressed at the
ventral midline. Robo-3 is a divergent member of the
Robo family which instead of being a positive regulator
of slit responsiveness, antagonizes slit responsiveness
in precrossing axons. The Slit-Robo interaction is
mediated by the second leucine-rich repeat (LRR) domain
of Slit and the two N-terminal Ig domains of Robo, Ig1
and Ig2. The primary Robo binding site for Slit2 has
been shown by surface plasmon resonance experiments and
mutational analysis to be is the Ig1 domain, while the
Ig2 domain has been proposed to harbor a weak secondary
binding site.
Length = 86
Score = 63.2 bits (154), Expect = 2e-14
Identities = 31/90 (34%), Positives = 42/90 (46%), Gaps = 11/90 (12%)
Query: 1 MVVAKNEPVTLNCKA-EGKPEPTIEWYKDGELVETSKSDAKSQRV-ILPTGSLFFLRVVH 58
VA E L C G PEPT+ W KDG+ + + ++RV I+ G+L
Sbjct: 6 TQVAVGEMAVLECSPPRGHPEPTVSWRKDGQPL-----NLDNERVRIVDDGNLLIAEA-- 58
Query: 59 GKKEQDGGVYWCLARNSVGTAVSRNATLQV 88
++ D G Y C+A N VG S A L V
Sbjct: 59 --RKSDEGTYKCVATNMVGERESAAARLSV 86
>gnl|CDD|143165 cd00096, Ig, Immunoglobulin domain. Ig: immunoglobulin (Ig)
domain found in the Ig superfamily. The Ig superfamily
is a heterogenous group of proteins, built on a common
fold comprised of a sandwich of two beta sheets.
Members of this group are components of immunoglobulin,
neuroglia, cell surface glycoproteins, such as, T-cell
receptors, CD2, CD4, CD8, and membrane glycoproteins,
such as, butyrophilin and chondroitin sulfate
proteoglycan core protein. A predominant feature of
most Ig domains is a disulfide bridge connecting the
two beta-sheets with a tryptophan residue packed
against the disulfide bond.
Length = 74
Score = 62.1 bits (150), Expect = 4e-14
Identities = 25/73 (34%), Positives = 33/73 (45%), Gaps = 6/73 (8%)
Query: 9 VTLNCKAEGKPEPTIEWYKDGELVETSKSDAKSQRV--ILPTGSLFFLRVVHGKKEQDGG 66
VTL C A G P PTI W K+G+ + +S + +L V +D G
Sbjct: 1 VTLTCLASGPPPPTITWLKNGKPLPSSVLTRVRSSRGTSSGSSTLTISNV----TLEDSG 56
Query: 67 VYWCLARNSVGTA 79
Y C+A NS GT
Sbjct: 57 TYTCVASNSAGTV 69
>gnl|CDD|206066 pfam13895, Ig_2, Immunoglobulin domain. This domain contains
immunoglobulin-like domains.
Length = 80
Score = 62.1 bits (151), Expect = 5e-14
Identities = 30/87 (34%), Positives = 36/87 (41%), Gaps = 16/87 (18%)
Query: 2 VVAKNEPVTLNCKAEGKPEPTIEWYKDGELVETSKSDAKSQRVILPTGSLFFLRVVHGKK 61
VV + E VTL C A G P P WYKDG + + + FF V
Sbjct: 10 VVFEGEDVTLTCSAPGNPPPNYTWYKDGVPLS-------------SSQNGFFTPNVS--- 53
Query: 62 EQDGGVYWCLARNSVGTAVSRNATLQV 88
+D G Y C+A N G S TL V
Sbjct: 54 AEDSGTYTCVASNGGGGKTSNPVTLTV 80
>gnl|CDD|143240 cd05763, Ig_1, Subgroup of the immunoglobulin (Ig) superfamily.
Ig_1: subgroup of the immunoglobulin (Ig) domain found
in the Ig superfamily. The Ig superfamily is a
heterogenous group of proteins, built on a common fold
comprised of a sandwich of two beta sheets. Members of
the Ig superfamily are components of immunoglobulin,
neuroglia, cell surface glycoproteins, such as T-cell
receptors, CD2, CD4, CD8, and membrane glycoproteins,
such as butyrophilin and chondroitin sulfate
proteoglycan core protein. A predominant feature of
most Ig domains is a disulfide bridge connecting the
two beta-sheets with a tryptophan residue packed
against the disulfide bond.
Length = 75
Score = 60.3 bits (146), Expect = 2e-13
Identities = 33/79 (41%), Positives = 45/79 (56%), Gaps = 8/79 (10%)
Query: 11 LNCKAEGKPEPTIEWYKDGELVETSKSDAKSQRV-ILPTGSLFFLRVVHGKKEQDGGVYW 69
L C A G P P I W KDG T A+ +R+ ++P +FF+ V K +D GVY
Sbjct: 3 LECAATGHPTPQIAWQKDG---GTDFPAARERRMHVMPEDDVFFIVDV---KIEDTGVYS 56
Query: 70 CLARNSVGTAVSRNATLQV 88
C A+N+ G+ +S NATL V
Sbjct: 57 CTAQNTAGS-ISANATLTV 74
>gnl|CDD|214653 smart00410, IG_like, Immunoglobulin like. IG domains that cannot
be classified into one of IGv1, IGc1, IGc2, IG.
Length = 85
Score = 59.4 bits (144), Expect = 5e-13
Identities = 30/88 (34%), Positives = 39/88 (44%), Gaps = 6/88 (6%)
Query: 1 MVVAKNEPVTLNCKAEGKPEPTIEWYKDGELVETSKSDAKSQRVILPTGSLFFLRVVHGK 60
+ V + E VTL+C+A G P P + WYK G + R T +L V
Sbjct: 4 VTVKEGESVTLSCEASGSPPPEVTWYKQGGKLLAESGRFSVSRSGS-TSTLTISNV---- 58
Query: 61 KEQDGGVYWCLARNSVGTAVSRNATLQV 88
+D G Y C A NS G+ S TL V
Sbjct: 59 TPEDSGTYTCAATNSSGS-ASSGTTLTV 85
>gnl|CDD|214652 smart00409, IG, Immunoglobulin.
Length = 85
Score = 59.4 bits (144), Expect = 5e-13
Identities = 30/88 (34%), Positives = 39/88 (44%), Gaps = 6/88 (6%)
Query: 1 MVVAKNEPVTLNCKAEGKPEPTIEWYKDGELVETSKSDAKSQRVILPTGSLFFLRVVHGK 60
+ V + E VTL+C+A G P P + WYK G + R T +L V
Sbjct: 4 VTVKEGESVTLSCEASGSPPPEVTWYKQGGKLLAESGRFSVSRSGS-TSTLTISNV---- 58
Query: 61 KEQDGGVYWCLARNSVGTAVSRNATLQV 88
+D G Y C A NS G+ S TL V
Sbjct: 59 TPEDSGTYTCAATNSSGS-ASSGTTLTV 85
>gnl|CDD|143168 cd04967, Ig1_Contactin, First Ig domain of contactin.
Ig1_Contactin: First Ig domain of contactins.
Contactins are neural cell adhesion molecules and are
comprised of six Ig domains followed by four
fibronectin type III(FnIII) domains anchored to the
membrane by glycosylphosphatidylinositol. The first
four Ig domains form the intermolecular binding
fragment, which arranges as a compact U-shaped module
via contacts between Ig domains 1 and 4, and between Ig
domains 2 and 3. Contactin-2 (TAG-1, axonin-1) may play
a part in the neuronal processes of neurite outgrowth,
axon guidance and fasciculation, and neuronal
migration. This group also includes contactin-1 and
contactin-5. The different contactins show different
expression patterns in the central nervous system.
During development and in adulthood, contactin-2 is
transiently expressed in subsets of central and
peripheral neurons. Contactin-5 is expressed
specifically in the rat postnatal nervous system,
peaking at about 3 weeks postnatal, and a lack of
contactin-5 (NB-2) results in an impairment of neuronal
activity in the rat auditory system. Contactin-5 is
highly expressed in the adult human brain in the
occipital lobe and in the amygdala. Contactin-1 is
differentially expressed in tumor tissues and may,
through a RhoA mechanism, facilitate invasion and
metastasis of human lung adenocarcinoma.
Length = 91
Score = 59.0 bits (143), Expect = 1e-12
Identities = 33/80 (41%), Positives = 40/80 (50%), Gaps = 9/80 (11%)
Query: 7 EPVTLNCKAEGKPEPTIEWYKDGELVETSKSDAKSQRVILPTGSLFFLRVVHG-KKEQDG 65
V+LNC+A G P PT W +G T D R L G+L V+ K +D
Sbjct: 20 GKVSLNCRARGSPPPTYRWLMNG----TEIDDEPDSRYSLVGGNL----VISNPSKAKDA 71
Query: 66 GVYWCLARNSVGTAVSRNAT 85
G Y CLA N VGT +SR AT
Sbjct: 72 GRYQCLASNIVGTVLSREAT 91
>gnl|CDD|143256 cd05848, Ig1_Contactin-5, First Ig domain of contactin-5.
Ig1_Contactin-5: First Ig domain of the neural cell
adhesion molecule contactin-5. Contactins are comprised
of six Ig domains followed by four fibronectin type III
(FnIII) domains, anchored to the membrane by
glycosylphosphatidylinositol. The different contactins
show different expression patterns in the central
nervous system. In rats, a lack of contactin-5 (NB-2)
results in an impairment of the neuronal activity in
the auditory system. Contactin-5 is expressed
specifically in the postnatal nervous system, peaking
at about 3 weeks postnatal. Contactin-5 is highly
expressed in the adult human brain in the occipital
lobe and in the amygdala; lower levels of expression
have been detected in the corpus callosum, caudate
nucleus, and spinal cord.
Length = 94
Score = 56.9 bits (137), Expect = 7e-12
Identities = 33/80 (41%), Positives = 46/80 (57%), Gaps = 9/80 (11%)
Query: 9 VTLNCKAEGKPEPTIEWYKDGELVETSKSDAKSQRVILPTGSLFFLRVVHGKKE-QDGGV 67
V LNC+A G P PT W ++G ++T +SD R L G+L ++ E +D G
Sbjct: 22 VILNCEARGNPVPTYRWLRNGTEIDT-ESDY---RYSLIDGNL----IISNPSEVKDSGR 73
Query: 68 YWCLARNSVGTAVSRNATLQ 87
Y CLA NS+G+ +SR A LQ
Sbjct: 74 YQCLATNSIGSILSREALLQ 93
>gnl|CDD|143211 cd05734, Ig7_DSCAM, Seventh immunoglobulin (Ig)-like domain of
Down Syndrome Cell Adhesion molecule (DSCAM).
Ig7_DSCAM: the seventh immunoglobulin (Ig)-like domain
of Down Syndrome Cell Adhesion molecule (DSCAM). DSCAM
is a cell adhesion molecule expressed largely in the
developing nervous system. The gene encoding DSCAM is
located at human chromosome 21q22, the locus associated
with the mental retardation phenotype of Down Syndrome.
DSCAM is predicted to be the largest member of the IG
superfamily. It has been demonstrated that DSCAM can
mediate cation-independent homophilic intercellular
adhesion.
Length = 79
Score = 54.9 bits (132), Expect = 3e-11
Identities = 31/83 (37%), Positives = 38/83 (45%), Gaps = 7/83 (8%)
Query: 9 VTLNCKAEGKPEPTIEW-YKDGELVETSKSDAKSQ-RV-ILPTGSLFFLRVVHGKKEQDG 65
VTLNC AEG P PTI W + G R+ +L GSL V+ E+D
Sbjct: 1 VTLNCSAEGYPPPTIVWKHSKGRGHPQHTHTCCLAGRIQLLSNGSLLIKHVL----EEDS 56
Query: 66 GVYWCLARNSVGTAVSRNATLQV 88
G Y C N VG S++ L V
Sbjct: 57 GYYLCKVSNDVGADASKSMVLTV 79
>gnl|CDD|143215 cd05738, Ig2_RPTP_IIa_LAR_like, Second immunoglobulin (Ig)-like
domain of the receptor protein tyrosine phosphatase
(RPTP)-F, also known as LAR. Ig2_RPTP_IIa_LAR_like:
domain similar to the second immunoglobulin (Ig)-like
domain found in the receptor protein tyrosine
phosphatase (RPTP)-F, also known as LAR. LAR belongs to
the RPTP type IIa subfamily. Members of this subfamily
are cell adhesion molecule-like proteins involved in
central nervous system (CNS) development. They have
large extracellular portions, comprised of multiple
Ig-like domains and two to nine fibronectin type III
(FNIII) domains, and a cytoplasmic portion having two
tandem phosphatase domains.
Length = 74
Score = 53.5 bits (128), Expect = 9e-11
Identities = 30/79 (37%), Positives = 41/79 (51%), Gaps = 7/79 (8%)
Query: 10 TLNCKAEGKPEPTIEWYKDGELVETSKSDAKSQRVILPTGSLFFLRVVHGKKEQDGGVYW 69
T+ C A G P+P I W+KD V+T+ + Q L +G+L + +E D G Y
Sbjct: 2 TMLCAASGNPDPEITWFKDFLPVDTTSNGRIKQ---LRSGALQ----IENSEESDQGKYE 54
Query: 70 CLARNSVGTAVSRNATLQV 88
C+A NS GT S A L V
Sbjct: 55 CVATNSAGTRYSAPANLYV 73
>gnl|CDD|143237 cd05760, Ig2_PTK7, Second immunoglobulin (Ig)-like domain of
protein tyrosine kinase (PTK) 7, also known as CCK4.
Ig2_PTK7: domain similar to the second immunoglobulin
(Ig)-like domain in protein tyrosine kinase (PTK) 7,
also known as CCK4. PTK7 is a subfamily of the receptor
protein tyrosine kinase family, and is referred to as
an RPTK-like molecule. RPTKs transduce extracellular
signals across the cell membrane, and play important
roles in regulating cell proliferation, migration, and
differentiation. PTK7 is organized as an extracellular
portion having seven Ig-like domains, a single
transmembrane region, and a cytoplasmic tyrosine
kinase-like domain. PTK7 is considered a pseudokinase
as it has several unusual residues in some of the
highly conserved tyrosine kinase (TK) motifs; it is
predicted to lack TK activity. PTK7 may function as a
cell-adhesion molecule. PTK7 mRNA is expressed at high
levels in placenta, melanocytes, liver, lung, pancreas,
and kidney. PTK7 is overexpressed in several cancers,
including melanoma and colon cancer lines.
Length = 77
Score = 53.4 bits (128), Expect = 1e-10
Identities = 27/82 (32%), Positives = 39/82 (47%), Gaps = 8/82 (9%)
Query: 9 VTLNCKAEGKPEPTIEWYKDGELVETSKSDAKSQRVILPTGSLFFLRVVHGKKEQDGGVY 68
VTL C +G P PT +W++DG T SD + + LR D G+Y
Sbjct: 1 VTLRCHIDGHPRPTYQWFRDG----TPLSDGQGNYSVSSKERTLTLR---SAGPDDSGLY 53
Query: 69 WCLARNSVGTAVS-RNATLQVA 89
+C A N+ G+ S +N TL +
Sbjct: 54 YCCAHNAFGSVCSSQNFTLSII 75
>gnl|CDD|143258 cd05850, Ig1_Contactin-2, First Ig domain of contactin-2.
Ig1_Contactin-2: First Ig domain of the neural cell
adhesion molecule contactin-2-like. Contactins are
comprised of six Ig domains followed by four
fibronectin type III (FnIII) domains anchored to the
membrane by glycosylphosphatidylinositol. Contactin-2
(TAG-1, axonin-1) facilitates cell adhesion by
homophilic binding between molecules in apposed
membranes. It may play a part in the neuronal processes
of neurite outgrowth, axon guidance and fasciculation,
and neuronal migration. The first four Ig domains form
the intermolecular binding fragment, which arranges as
a compact U-shaped module by contacts between IG
domains 1 and 4, and domains 2 and 3. The different
contactins show different expression patterns in the
central nervous system. During development and in
adulthood, contactin-2 is transiently expressed in
subsets of central and peripheral neurons. Contactin-2
is also expressed in retinal amacrine cells in the
developing chick retina, corresponding to the period of
formation and maturation of AC processes.
Length = 94
Score = 53.4 bits (128), Expect = 2e-10
Identities = 31/81 (38%), Positives = 39/81 (48%), Gaps = 7/81 (8%)
Query: 7 EPVTLNCKAEGKPEPTIEWYKDGELVETSKSDAKSQRVILPTGSLFFLRVVHGKKEQDGG 66
E VTL C+A P T W +G T A R L G+L + + +K +D G
Sbjct: 20 EKVTLGCRARASPPATYRWKMNG----TEIKFAPESRYTLVAGNLV---INNPQKARDAG 72
Query: 67 VYWCLARNSVGTAVSRNATLQ 87
Y CLA N GT VSR A L+
Sbjct: 73 SYQCLAINRCGTVVSREANLR 93
>gnl|CDD|143202 cd05725, Ig3_Robo, Third immunoglobulin (Ig)-like domain in Robo
(roundabout) receptors. Ig3_Robo: domain similar to
the third immunoglobulin (Ig)-like domain in Robo
(roundabout) receptors. Robo receptors play a role in
the development of the central nervous system (CNS),
and are receptors of Slit protein. Slit is a repellant
secreted by the neural cells in the midline. Slit acts
through Robo to prevent most neurons from crossing the
midline from either side. Three mammalian Robo homologs
(robo1, -2, and -3), and three mammalian Slit homologs
(Slit-1,-2, -3), have been identified. Commissural
axons, which cross the midline, express low levels of
Robo; longitudinal axons, which avoid the midline,
express high levels of Robo. robo1, -2, and -3 are
expressed by commissural neurons in the vertebrate
spinal cord and Slits 1, -2, -3 are expressed at the
ventral midline. Robo-3 is a divergent member of the
Robo family which instead of being a positive regulator
of slit responsiveness, antagonizes slit responsiveness
in precrossing axons. The Slit-Robo interaction is
mediated by the second leucine-rich repeat (LRR) domain
of Slit and the two N-terminal Ig domains of Robo, Ig1
and Ig2. The primary Robo binding site for Slit2 has
been shown by surface plasmon resonance experiments and
mutational analysis to be is the Ig1 domain, while the
Ig2 domain has been proposed to harbor a weak secondary
binding site.
Length = 69
Score = 51.6 bits (124), Expect = 4e-10
Identities = 29/81 (35%), Positives = 34/81 (41%), Gaps = 13/81 (16%)
Query: 9 VTLNCKAEGKPEPTIEWYK-DGELVETSKSDAKSQRVILPTGSLFFLRVVHGKKEQDGGV 67
V C+ G P PT+ W K DGEL K + IL SL V D G
Sbjct: 1 VEFQCEVGGDPVPTVLWRKEDGEL-------PKGRAEILDDKSLKIRNV----TAGDEGS 49
Query: 68 YWCLARNSVGTAVSRNATLQV 88
Y C A N VG + A+L V
Sbjct: 50 YTCEAENMVGKIEAS-ASLTV 69
>gnl|CDD|143170 cd04969, Ig5_Contactin_like, Fifth Ig domain of contactin.
Ig5_Contactin_like: Fifth Ig domain of contactins.
Contactins are neural cell adhesion molecules and are
comprised of six Ig domains followed by four
fibronectin type III(FnIII) domains anchored to the
membrane by glycosylphosphatidylinositol. The first
four Ig domains form the intermolecular binding
fragment, which arranges as a compact U-shaped module
via contacts between Ig domains 1 and 4, and between Ig
domains 2 and 3. Contactin-2 (TAG-1, axonin-1) may play
a part in the neuronal processes of neurite outgrowth,
axon guidance and fasciculation, and neuronal
migration. This group also includes contactin-1 and
contactin-5. The different contactins show different
expression patterns in the central nervous system.
During development and in adulthood, contactin-2 is
transiently expressed in subsets of central and
peripheral neurons. Contactin-5 is expressed
specifically in the rat postnatal nervous system,
peaking at about 3 weeks postnatal, and a lack of
contactin-5 (NB-2) results in an impairment of neuronal
act ivity in the rat auditory system. Contactin-5 is
highly expressed in the adult human brain in the
occipital lobe and in the amygdala. Contactin-1 is
differentially expressed in tumor tissues and may,
through a RhoA mechanism, facilitate invasion and
metastasis of human lung adenocarcinoma.
Length = 73
Score = 51.3 bits (123), Expect = 6e-10
Identities = 31/81 (38%), Positives = 38/81 (46%), Gaps = 12/81 (14%)
Query: 9 VTLNCKAEGKPEPTIEWYKDGELVETSKSDAKSQRV-ILPTGSLFFLRVVHGKKEQDGGV 67
V + CK + P+PTI W K EL+ S R+ I P GSL L V + D G
Sbjct: 4 VIIECKPKAAPKPTISWSKGTELLTNSS------RICIWPDGSLEILNV----TKSDEGK 53
Query: 68 YWCLARNSVGTAVSRNATLQV 88
Y C A N G A S +L V
Sbjct: 54 YTCFAENFFGKANS-TGSLSV 73
>gnl|CDD|143210 cd05733, Ig6_L1-CAM_like, Sixth immunoglobulin (Ig)-like domain
of the L1 cell adhesion molecule (CAM) and similar
proteins. Ig6_L1-CAM_like: domain similar to the sixth
immunoglobulin (Ig)-like domain of the L1 cell adhesion
molecule (CAM). L1 belongs to the L1 subfamily of cell
adhesion molecules (CAMs) and is comprised of an
extracellular region having six Ig-like domains and
five fibronectin type III domains, a transmembrane
region and an intracellular domain. L1 is primarily
expressed in the nervous system and is involved in its
development and function. L1 is associated with an
X-linked recessive disorder, X-linked hydrocephalus,
MASA syndrome, or spastic paraplegia type 1, that
involves abnormalities of axonal growth. This group
also contains NrCAM [Ng(neuronglia)CAM-related cell
adhesion molecule], which is primarily expressed in the
nervous system, and human neurofascin.
Length = 77
Score = 50.5 bits (121), Expect = 1e-09
Identities = 23/81 (28%), Positives = 36/81 (44%), Gaps = 6/81 (7%)
Query: 9 VTLNCKAEGKPEPTIEWYKDGELVETSKSDAKSQRVILPTGSLFFLRVVHG--KKEQDGG 66
+ + C+A+G P PT W ++G + K RV + S + + E G
Sbjct: 1 IVIKCEAKGNPPPTFSWTRNGTHFDP----EKDPRVTMKPDSGTLVIDNMNGGRAEDYEG 56
Query: 67 VYWCLARNSVGTAVSRNATLQ 87
Y C A N +GTA+S L+
Sbjct: 57 EYQCYASNELGTAISNEIHLR 77
>gnl|CDD|143205 cd05728, Ig4_Contactin-2-like, Fourth Ig domain of the neural
cell adhesion molecule contactin-2 and similar
proteins. Ig4_Contactin-2-like: fourth Ig domain of
the neural cell adhesion molecule contactin-2.
Contactins are comprised of six Ig domains followed by
four fibronectin type III (FnIII) domains anchored to
the membrane by glycosylphosphatidylinositol.
Contactin-2 (aliases TAG-1, axonin-1) facilitates cell
adhesion by homophilic binding between molecules in
apposed membranes. The first four Ig domains form the
intermolecular binding fragment which arranges as a
compact U-shaped module by contacts between Ig domains
1 and 4, and domains 2 and 3. It has been proposed that
a linear zipper-like array forms, from contactin-2
molecules alternatively provided by the two apposed
membranes.
Length = 85
Score = 49.9 bits (119), Expect = 3e-09
Identities = 24/76 (31%), Positives = 35/76 (46%), Gaps = 11/76 (14%)
Query: 13 CKAEGKPEPTIEWYKDGELVETSKSDAKSQRVILPTGSLFFLRVVHGKKEQDGGVYWCLA 72
CKA G P P W K+G+ + A R+ + G L ++ D G+Y C+A
Sbjct: 21 CKASGNPRPAYRWLKNGQPL------ASENRIEVEAGDLRITKLSL----SDSGMYQCVA 70
Query: 73 RNSVGTAVSRNATLQV 88
N GT + +A L V
Sbjct: 71 ENKHGT-IYASAELAV 85
>gnl|CDD|143241 cd05764, Ig_2, Subgroup of the immunoglobulin (Ig) superfamily.
Ig_2: subgroup of the immunoglobulin (Ig) domain found
in the Ig superfamily. The Ig superfamily is a
heterogenous group of proteins, built on a common fold
comprised of a sandwich of two beta sheets. Members of
the Ig superfamily are components of immunoglobulin,
neuroglia, cell surface glycoproteins, such as T-cell
receptors, CD2, CD4, CD8, and membrane glycoproteins,
such as butyrophilin and chondroitin sulfate
proteoglycan core protein. A predominant feature of
most Ig domains is a disulfide bridge connecting the
two beta-sheets with a tryptophan residue packed
against the disulfide bond.
Length = 74
Score = 49.4 bits (118), Expect = 3e-09
Identities = 27/77 (35%), Positives = 39/77 (50%), Gaps = 10/77 (12%)
Query: 7 EPVTLNCKAEGKPEPTIEW-YKDGELVETSKSDAKSQRVILPTGSLFFLRVVHGKKEQDG 65
+ TL CKA G PEP I W DG+L+ S S+ ++ G+L L + K D
Sbjct: 2 QRATLRCKARGDPEPAIHWISPDGKLISNS-----SRTLVYDNGTLDIL--ITTVK--DT 52
Query: 66 GVYWCLARNSVGTAVSR 82
G + C+A N+ G A +
Sbjct: 53 GSFTCIASNAAGEATAT 69
>gnl|CDD|143282 cd05874, Ig6_NrCAM, Sixth immunoglobulin (Ig)-like domain of
NrCAM (Ng (neuronglia) CAM-related cell adhesion
molecule). Ig6_NrCAM: sixth immunoglobulin (Ig)-like
domain of NrCAM (Ng (neuronglia) CAM-related cell
adhesion molecule). NrCAM belongs to the L1 subfamily
of cell adhesion molecules (CAMs) and is comprised of
an extracellular region having six Ig-like domains and
five fibronectin type III domains, a transmembrane
region, and an intracellular domain. NrCAM is primarily
expressed in the nervous system.
Length = 77
Score = 48.8 bits (116), Expect = 6e-09
Identities = 29/77 (37%), Positives = 40/77 (51%), Gaps = 6/77 (7%)
Query: 9 VTLNCKAEGKPEPTIEWYKDGELVETSKSDAKSQRVILP--TGSLFFLRVVHGKKEQDGG 66
+ + C+A+GKP P+ W ++G + K D K V + TG+L + K E G
Sbjct: 1 IVIQCEAKGKPPPSFSWTRNGTHFDIDK-DPK---VTMKPNTGTLVINIMNGEKAEAYEG 56
Query: 67 VYWCLARNSVGTAVSRN 83
VY C ARN G AVS N
Sbjct: 57 VYQCTARNERGAAVSNN 73
>gnl|CDD|143223 cd05746, Ig4_Peroxidasin, Fourth immunoglobulin (Ig)-like domain
of peroxidasin. Ig4_Peroxidasin: the fourth
immunoglobulin (Ig)-like domain in peroxidasin.
Peroxidasin has a peroxidase domain and interacting
extracellular motifs containing four Ig-like domains.
It has been suggested that peroxidasin is secreted, and
has functions related to the stabilization of the
extracellular matrix. It may play a part in various
other important processes such as removal and
destruction of cells, which have undergone programmed
cell death, and protection of the organism against
non-self.
Length = 69
Score = 47.9 bits (114), Expect = 1e-08
Identities = 28/72 (38%), Positives = 37/72 (51%), Gaps = 11/72 (15%)
Query: 9 VTLNCKAEGKPEPTIEWYKDG-ELVETSKSDAKSQRVILPTGSLFFLRVVHGKKEQDGGV 67
V + C A+G PEPTI W KDG ++ E+ K I P G L + D G
Sbjct: 1 VQIPCSAQGDPEPTITWNKDGVQVTESGKFH------ISPEGYL----AIRDVGVADQGR 50
Query: 68 YWCLARNSVGTA 79
Y C+ARN++G A
Sbjct: 51 YECVARNTIGYA 62
>gnl|CDD|143208 cd05731, Ig3_L1-CAM_like, Third immunoglobulin (Ig)-like domain
of the L1 cell adhesion molecule (CAM).
Ig3_L1-CAM_like: domain similar to the third
immunoglobulin (Ig)-like domain of the L1 cell adhesion
molecule (CAM). L1 belongs to the L1 subfamily of cell
adhesion molecules (CAMs) and is comprised of an
extracellular region having six Ig-like domains and
five fibronectin type III domains, a transmembrane
region and an intracellular domain. L1 is primarily
expressed in the nervous system and is involved in its
development and function. L1 is associated with an
X-linked recessive disorder, X-linked hydrocephalus,
MASA syndrome, or spastic paraplegia type 1, that
involves abnormalities of axonal growth. This group
also contains the chicken neuron-glia cell adhesion
molecule, Ng-CAM and human neurofascin.
Length = 71
Score = 47.0 bits (112), Expect = 3e-08
Identities = 26/74 (35%), Positives = 33/74 (44%), Gaps = 15/74 (20%)
Query: 9 VTLNCKAEGKPEPTIEWYK-DGELVETSKSDAKSQRVILPTGSLFFLRVVHGKK--EQDG 65
+ L C AEG P P I W K GEL + R T F + + E+D
Sbjct: 1 LLLECIAEGLPTPEISWIKIGGEL--------PADR----TKFENFNKTLKIDNVSEEDD 48
Query: 66 GVYWCLARNSVGTA 79
G Y C A NS+G+A
Sbjct: 49 GEYRCTASNSLGSA 62
>gnl|CDD|143283 cd05875, Ig6_hNeurofascin_like, Sixth immunoglobulin (Ig)-like
domain of human neurofascin (NF).
Ig6_hNeurofascin_like: the sixth immunoglobulin
(Ig)-like domain of human neurofascin (NF). NF belongs
to the L1 subfamily of cell adhesion molecules (CAMs)
and is comprised of an extracellular region having six
Ig-like domains and five fibronectin type III domains,
a transmembrane region, and a cytoplasmic domain. NF
has many alternatively spliced isoforms having
different temporal expression patterns during
development. NF participates in axon subcellular
targeting and synapse formation, however little is
known of the functions of the different isoforms.
Length = 77
Score = 46.9 bits (111), Expect = 4e-08
Identities = 27/79 (34%), Positives = 42/79 (53%), Gaps = 2/79 (2%)
Query: 9 VTLNCKAEGKPEPTIEWYKDGELVETSKSDAKSQRVILPTGSLFFLRVVHGKKEQDGGVY 68
+ + C+A+G P PT +W ++G+ +K S R +G+L G+ E G Y
Sbjct: 1 IIIECEAKGNPVPTFQWTRNGKFFNVAKDPRVSMRR--RSGTLVIDFSGGGRPEDYEGEY 58
Query: 69 WCLARNSVGTAVSRNATLQ 87
C ARN++GTA+S LQ
Sbjct: 59 QCFARNNLGTALSNKILLQ 77
>gnl|CDD|143213 cd05736, Ig2_Follistatin_like, Second immunoglobulin (Ig)-like
domain of a follistatin-like molecule encoded by the
Mahya gene and similar proteins. Ig2_Follistatin_like:
domain similar to the second immunoglobulin (Ig)-like
domain found in a follistatin-like molecule encoded by
the CNS-related Mahya gene. Mahya genes have been
retained in certain Bilaterian branches during
evolution. They are conserved in Hymenoptera and
Deuterostomes, but are absent from other metazoan
species such as fruit fly and nematode. Mahya proteins
are secretory, with a follistatin-like domain
(Kazal-type serine/threonine protease inhibitor domain
and EF-hand calcium-binding domain), two Ig-like
domains, and a novel C-terminal domain. Mahya may be
involved in learning and memory and in processing of
sensory information in Hymenoptera and vertebrates.
Follistatin is a secreted, multidomain protein that
binds activins with high affinity and antagonizes their
signaling.
Length = 76
Score = 46.5 bits (110), Expect = 5e-08
Identities = 22/68 (32%), Positives = 32/68 (47%), Gaps = 6/68 (8%)
Query: 10 TLNCKAEGKPEPTIEWYKDGELVETSKSDAKSQRVILPTGSLFFLRVVHGKKEQDGGVYW 69
+L C AEG P P + W K+G + S Q ++ GS + V +D G Y
Sbjct: 2 SLRCHAEGIPLPRLTWLKNGMDITPKLSK---QLTLIANGSELHISNVR---YEDTGAYT 55
Query: 70 CLARNSVG 77
C+A+N G
Sbjct: 56 CIAKNEAG 63
>gnl|CDD|143257 cd05849, Ig1_Contactin-1, First Ig domain of contactin-1.
Ig1_Contactin-1: First Ig domain of the neural cell
adhesion molecule contactin-1. Contactins are comprised
of six Ig domains followed by four fibronectin type III
(FnIII) domains anchored to the membrane by
glycosylphosphatidylinositol. Contactin-1 is
differentially expressed in tumor tissues and may,
through a RhoA mechanism, facilitate invasion and
metastasis of human lung adenocarcinoma.
Length = 93
Score = 46.1 bits (109), Expect = 9e-08
Identities = 24/78 (30%), Positives = 37/78 (47%), Gaps = 8/78 (10%)
Query: 9 VTLNCKAEGKPEPTIEWYKDGELVETSKSDAKSQRVILPTGSLFFLRVVHGKKEQDGGVY 68
V++NC+A P P +W K+ + D + R + G+L + + K +D G Y
Sbjct: 22 VSVNCRARANPFPIYKWRKNNLDI-----DLTNDRYSMVGGNLV---INNPDKYKDAGRY 73
Query: 69 WCLARNSVGTAVSRNATL 86
C+ N G SR ATL
Sbjct: 74 VCIVSNIYGKVRSREATL 91
>gnl|CDD|143179 cd04978, Ig4_L1-NrCAM_like, Fourth immunoglobulin (Ig)-like
domain of L1, Ng-CAM (Neuron-glia CAM cell adhesion
molecule), and NrCAM (Ng-CAM-related).
Ig4_L1-NrCAM_like: fourth immunoglobulin (Ig)-like
domain of L1, Ng-CAM (Neuron-glia CAM cell adhesion
molecule), and NrCAM (Ng-CAM-related). These proteins
belong to the L1 subfamily of cell adhesion molecules
(CAMs) and are comprised of an extracellular region
having six Ig-like domains and five fibronectin type
III domains, a transmembrane region and an
intracellular domain. These molecules are primarily
expressed in the nervous system. L1 is associated with
an X-linked recessive disorder, X-linked hydrocephalus,
MASA syndrome, or spastic paraplegia type 1, that
involves abnormalities of axonal growth.
Length = 76
Score = 45.5 bits (108), Expect = 1e-07
Identities = 28/82 (34%), Positives = 39/82 (47%), Gaps = 8/82 (9%)
Query: 7 EPVTLNCKAEGKPEPTIEWYKDGELVETSKSDAKSQRVILPTGSLFFLRVVHGKKEQDGG 66
E L+C+AEG P+PTI W +G +E D + R + G+L V D
Sbjct: 2 ETGRLDCEAEGIPQPTITWRLNGVPIEELPPDPR--RRVDG-GTLILSNVQPN----DTA 54
Query: 67 VYWCLARNSVGTAVSRNATLQV 88
VY C A N G ++ NA + V
Sbjct: 55 VYQCNASNVHGYLLA-NAFVHV 75
>gnl|CDD|143207 cd05730, Ig3_NCAM-1_like, Third immunoglobulin (Ig)-like domain
of Neural Cell Adhesion Molecule NCAM-1 (NCAM).
Ig3_NCAM-1_like: domain similar to the third
immunoglobulin (Ig)-like domain of Neural Cell Adhesion
Molecule NCAM-1 (NCAM). NCAM plays important roles in
the development and regeneration of the central nervous
system, in synaptogenesis and neural migration. NCAM
mediates cell-cell and cell-substratum recognition and
adhesion via homophilic (NCAM-NCAM), and heterophilic
(NCAM-non-NCAM), interactions. NCAM is expressed as
three major isoforms having different intracellular
extensions. The extracellular portion of NCAM has five
N-terminal Ig-like domains and two fibronectin type III
domains. The double zipper adhesion complex model for
NCAM homophilic binding involves Ig1, Ig2, and Ig3. By
this model, Ig1,and Ig2 mediate dimerization of NCAM
molecules situated on the same cell surface (cis
interactions), and Ig3 domains mediate interactions
between NCAM molecules expressed on the surface of
opposing cells (trans interactions), through binding to
the Ig1 and Ig2 domains. The adhesive ability of NCAM
is modulated by the addition of polysialic acid chains
to the fifth Ig-like domain.
Length = 95
Score = 44.5 bits (105), Expect = 4e-07
Identities = 27/78 (34%), Positives = 37/78 (47%), Gaps = 17/78 (21%)
Query: 7 EPVTLNCKAEGKPEPTIEWYKDGELVET-----SKSDAKSQRVILPTGSLFFLRVVHGKK 61
+ VTL C A+G PEPT+ W KDGE +E+ S ++ S+ I L V
Sbjct: 19 QSVTLACDADGFPEPTMTWTKDGEPIESGEEKYSFNEDGSEMTI--------LDV----D 66
Query: 62 EQDGGVYWCLARNSVGTA 79
+ D Y C+A N G
Sbjct: 67 KLDEAEYTCIAENKAGEQ 84
>gnl|CDD|143206 cd05729, Ig2_FGFR_like, Second immunoglobulin (Ig)-like domain of
fibroblast growth factor (FGF) receptor and similar
proteins. Ig2_FGFR_like: domain similar to the second
immunoglobulin (Ig)-like domain of fibroblast growth
factor (FGF) receptor. FGF receptors bind FGF signaling
polypeptides. FGFs participate in multiple processes
such as morphogenesis, development, and angiogenesis.
FGFs bind to four FGF receptor tyrosine kinases (FGFR1,
-2, -3, -4). Receptor diversity is controlled by
alternative splicing producing splice variants with
different ligand binding characteristics and different
expression patterns. FGFRs have an extracellular region
comprised of three Ig-like domains, a single
transmembrane helix, and an intracellular tyrosine
kinase domain. Ligand binding and specificity reside in
the Ig-like domains 2 and 3, and the linker region that
connects these two. FGFR activation and signaling
depend on FGF-induced dimerization, a process involving
cell surface heparin or heparin sulfate proteoglycans.
This group also contains fibroblast growth factor (FGF)
receptor_like-1(FGFRL1). FGFRL1 does not have a protein
tyrosine kinase domain at its C terminus; neither does
its cytoplasmic domain appear to interact with a
signaling partner. It has been suggested that FGFRL1
may not have any direct signaling function, but instead
acts as a decoy receptor trapping FGFs and preventing
them from binding other receptors.
Length = 85
Score = 44.3 bits (105), Expect = 4e-07
Identities = 28/82 (34%), Positives = 34/82 (41%), Gaps = 8/82 (9%)
Query: 9 VTLNCKAEGKPEPTIEWYKDGELVETSKSDAKSQRVILPTGSLFFLRVVHGKKEQDGGVY 68
V L C A G P PTI W KDG+ + +V +L VV D G Y
Sbjct: 12 VRLKCPASGNPRPTITWLKDGKPFKKEHRI-GGYKVRKKKWTLILESVV----PSDSGKY 66
Query: 69 WCLARNSVGTAVSRNATLQVAV 90
C+ N G S N T +V V
Sbjct: 67 TCIVENKYG---SINHTYKVDV 85
>gnl|CDD|143264 cd05856, Ig2_FGFRL1-like, Second immunoglobulin (Ig)-like domain
of fibroblast growth factor (FGF)
receptor_like-1(FGFRL1). Ig2_FGFRL1-like: second
immunoglobulin (Ig)-like domain of fibroblast growth
factor (FGF) receptor_like-1(FGFRL1). FGFRL1 is
comprised of a signal peptide, three extracellular
Ig-like modules, a transmembrane segment, and a short
intracellular domain. FGFRL1 is expressed
preferentially in skeletal tissues. Similar to FGF
receptors, the expressed protein interacts specifically
with heparin and with FGF2. FGFRL1 does not have a
protein tyrosine kinase domain at its C terminus;
neither does its cytoplasmic domain appear to interact
with a signaling partner. It has been suggested that
FGFRL1 may not have any direct signaling function, but
instead acts as a decoy receptor trapping FGFs and
preventing them from binding other receptors.
Length = 82
Score = 44.1 bits (104), Expect = 5e-07
Identities = 29/92 (31%), Positives = 40/92 (43%), Gaps = 15/92 (16%)
Query: 2 VVAK--NEPVTLNCKAEGKPEPTIEWYKDGE-LVETSKSDAKSQRVILPTGSLFFLRVVH 58
V+A+ V L C A G P P I W KD + L T +++ ++ L +L
Sbjct: 3 VIARPVGSSVRLKCVASGNPRPDITWLKDNKPLTPTEIGESRKKKWTLSLKNL------- 55
Query: 59 GKKEQDGGVYWCLARNSVGTAVSRNATLQVAV 90
K +D G Y C N G NAT +V V
Sbjct: 56 --KPEDSGKYTCHVSNRAGEI---NATYKVDV 82
>gnl|CDD|143275 cd05867, Ig4_L1-CAM_like, Fourth immunoglobulin (Ig)-like domain
of the L1 cell adhesion molecule (CAM).
Ig4_L1-CAM_like: fourth immunoglobulin (Ig)-like
domain of the L1 cell adhesion molecule (CAM). L1 is
comprised of an extracellular region having six Ig-like
domains and five fibronectin type III domains, a
transmembrane region and an intracellular domain. L1 is
primarily expressed in the nervous system and is
involved in its development and function. L1 is
associated with an X-linked recessive disorder,
X-linked hydrocephalus, MASA syndrome, or spastic
paraplegia type 1, that involves abnormalities of
axonal growth. This group also contains the chicken
neuron-glia cell adhesion molecule, Ng-CAM.
Length = 76
Score = 43.3 bits (102), Expect = 8e-07
Identities = 26/82 (31%), Positives = 38/82 (46%), Gaps = 8/82 (9%)
Query: 7 EPVTLNCKAEGKPEPTIEWYKDGELVETSKSDAKSQRVILPTGSLFFLRVVHGKKEQDGG 66
E L+C+ EG P P I W +G +E + R + +G+L V + D
Sbjct: 2 ETARLDCQVEGIPTPNITWSINGAPIEGT---DPDPRRHVSSGALILTDV----QPSDTA 54
Query: 67 VYWCLARNSVGTAVSRNATLQV 88
VY C ARN G ++ NA + V
Sbjct: 55 VYQCEARNRHGNLLA-NAHVHV 75
>gnl|CDD|143242 cd05765, Ig_3, Subgroup of the immunoglobulin (Ig) superfamily.
Ig_3: subgroup of the immunoglobulin (Ig) domain found
in the Ig superfamily. The Ig superfamily is a
heterogenous group of proteins, built on a common fold
comprised of a sandwich of two beta sheets. Members of
the Ig superfamily are components of immunoglobulin,
neuroglia, cell surface glycoproteins, such as T-cell
receptors, CD2, CD4, CD8, and membrane glycoproteins,
such as butyrophilin and chondroitin sulfate
proteoglycan core protein. A predominant feature of
most Ig domains is a disulfide bridge connecting the
two beta-sheets with a tryptophan residue packed
against the disulfide bond.
Length = 81
Score = 43.3 bits (102), Expect = 9e-07
Identities = 23/74 (31%), Positives = 34/74 (45%), Gaps = 7/74 (9%)
Query: 7 EPVTLNCKAEGKPEPTIEWYK---DGELVETSKSDAKSQRVILPTGSLFFLRVVHGKKEQ 63
E + +C G+P P I W K E + + + V+ G L V++ + Q
Sbjct: 2 ETASFHCDVTGRPPPEITWEKQVHGKENLIMRPNHVRGNVVVTNIGQL----VIYNAQPQ 57
Query: 64 DGGVYWCLARNSVG 77
D G+Y C ARNS G
Sbjct: 58 DAGLYTCTARNSGG 71
>gnl|CDD|222457 pfam13927, Ig_3, Immunoglobulin domain. This family contains
immunoglobulin-like domains.
Length = 74
Score = 43.1 bits (101), Expect = 9e-07
Identities = 22/69 (31%), Positives = 29/69 (42%), Gaps = 11/69 (15%)
Query: 7 EPVTLNCKAEGKP-EPTIEWYKDGELVETSKSDAKSQRVILPTGSLFFLRVVHGKKEQDG 65
VTL C AEG P PTI WY++G + S S + + +D
Sbjct: 16 GGVTLTCSAEGGPPPPTISWYRNGSISGGSGGLGSSGSTL----------TLSSVTSEDS 65
Query: 66 GVYWCLARN 74
G Y C+A N
Sbjct: 66 GTYTCVASN 74
>gnl|CDD|143226 cd05749, Ig2_Tyro3_like, Second immunoglobulin (Ig)-like domain
of Axl/Tyro3 receptor tyrosine kinases (RTKs).
Ig2_Tyro3_like: the second immunoglobulin (Ig)-like
domain in the Axl/Tyro3 family of receptor tyrosine
kinases (RTKs). This family includes Axl (also known as
Ark, Ufo, and Tyro7), Tyro3 (also known as Sky, Rse,
Brt, Dtk, and Tif), and Mer (also known as Nyk, c-Eyk,
and Tyro12). Axl/Tyro3 family receptors have an
extracellular portion with two Ig-like domains followed
by two fibronectin-types III (FNIII) domains, a
membrane-spanning single helix, and a cytoplasmic
tyrosine kinase domain. Axl, Tyro3 and Mer are widely
expressed in adult tissues, though they show higher
expression in the brain, in the lymphatic and vascular
systems, and in the testis. Axl, Tyro3, and Mer bind
the vitamin K dependent protein Gas6 with high
affinity, and in doing so activate their tyrosine
kinase activity. Axl/Gas6 signaling may play a part in
cell adhesion processes, prevention of apoptosis, and
cell proliferation.
Length = 81
Score = 42.8 bits (101), Expect = 1e-06
Identities = 24/87 (27%), Positives = 35/87 (40%), Gaps = 15/87 (17%)
Query: 1 MVVAKNEPVTLNCKAEGKPEP-TIEWYKDGELVETSKSDAKSQRVILPTGSLFFLRVVHG 59
+ V N P L C+A G PEP I W++ G A S V+ G ++
Sbjct: 8 LSVTANTPFNLTCQAVGPPEPVEILWWQGG--SPLGDPPAPSPSVLNVPG-------LN- 57
Query: 60 KKEQDGGVYWCLARNSVGTAVSRNATL 86
+ + C A N+ G SR T+
Sbjct: 58 ----ETSKFSCEAHNAKGVTTSRTGTV 80
>gnl|CDD|215677 pfam00047, ig, Immunoglobulin domain. Members of the
immunoglobulin superfamily are found in hundreds of
proteins of different functions. Examples include
antibodies, the giant muscle kinase titin and receptor
tyrosine kinases. Immunoglobulin-like domains may be
involved in protein-protein and protein-ligand
interactions. The Pfam alignments do not include the
first and last strand of the immunoglobulin-like
domain.
Length = 62
Score = 42.1 bits (99), Expect = 2e-06
Identities = 18/66 (27%), Positives = 26/66 (39%), Gaps = 7/66 (10%)
Query: 6 NEPVTLNCKAEGKPEPTIEWYK-DGELVETSKSDAKSQRVILPTGSLFFLRVVHGKKEQD 64
VTL C G P+ + W+K L E++ RV + +L V +D
Sbjct: 1 GSSVTLTCSVSGPPQVDVTWFKEGKGLEESTTVGTDENRVS--SITLTISNV----TPED 54
Query: 65 GGVYWC 70
G Y C
Sbjct: 55 SGTYTC 60
>gnl|CDD|143203 cd05726, Ig4_Robo, Third immunoglobulin (Ig)-like domain in Robo
(roundabout) receptors. Ig4_Robo: domain similar to
the third immunoglobulin (Ig)-like domain in Robo
(roundabout) receptors. Robo receptors play a role in
the development of the central nervous system (CNS),
and are receptors of Slit protein. Slit is a repellant
secreted by the neural cells in the midline. Slit acts
through Robo to prevent most neurons from crossing the
midline from either side. Three mammalian Robo homologs
(robo1, -2, and -3), and three mammalian Slit homologs
(Slit-1,-2, -3), have been identified. Commissural
axons, which cross the midline, express low levels of
Robo; longitudinal axons, which avoid the midline,
express high levels of Robo. robo1, -2, and -3 are
expressed by commissural neurons in the vertebrate
spinal cord and Slits 1, -2, -3 are expressed at the
ventral midline. Robo-3 is a divergent member of the
Robo family which instead of being a positive regulator
of slit responsiveness, antagonizes slit responsiveness
in precrossing axons. The Slit-Robo interaction is
mediated by the second leucine-rich repeat (LRR) domain
of Slit and the two N-terminal Ig domains of Robo, Ig1
and Ig2. The primary Robo binding site for Slit2 has
been shown by surface plasmon resonance experiments and
mutational analysis to be is the Ig1 domain, while the
Ig2 domain has been proposed to harbor a weak secondary
binding site.
Length = 90
Score = 42.6 bits (100), Expect = 2e-06
Identities = 29/87 (33%), Positives = 42/87 (48%), Gaps = 8/87 (9%)
Query: 9 VTLNCKAEGKPEPTIEWYKDGE--LVETSKSDAKSQRVIL-PTGSLFFLRVVHGKKEQDG 65
VT C+A G P+P I W K+G L+ + + S R + TG L V + D
Sbjct: 4 VTFQCEATGNPQPAIFWQKEGSQNLLFSYQPPQSSSRFSVSQTGDLTITNV----QRSDV 59
Query: 66 GVYWCLARNSVGTAVSRNATLQVAVVI 92
G Y C N G+ +++ A L+V VI
Sbjct: 60 GYYICQTLNVAGSILTK-AYLEVTDVI 85
>gnl|CDD|143222 cd05745, Ig3_Peroxidasin, Third immunoglobulin (Ig)-like domain
of peroxidasin. Ig3_Peroxidasin: the third
immunoglobulin (Ig)-like domain in peroxidasin.
Peroxidasin has a peroxidase domain and interacting
extracellular motifs containing four Ig-like domains.
It has been suggested that peroxidasin is secreted and
has functions related to the stabilization of the
extracellular matrix. It may play a part in various
other important processes such as removal and
destruction of cells which have undergone programmed
cell death, and protection of the organism against
non-self.
Length = 74
Score = 41.1 bits (96), Expect = 5e-06
Identities = 24/70 (34%), Positives = 34/70 (48%), Gaps = 9/70 (12%)
Query: 9 VTLNCKAEGKPEPTIEWYKDGELVETSKSDAKSQRVILPTGSLFFLRVVHGKKEQDGGVY 68
V C+A+G P+P I W K G S+ + ++L +G+L RV D G Y
Sbjct: 5 VDFLCEAQGYPQPVIAWTKGG-----SQLSVDRRHLVLSSGTLRISRV----ALHDQGQY 55
Query: 69 WCLARNSVGT 78
C A N VG+
Sbjct: 56 ECQAVNIVGS 65
>gnl|CDD|143284 cd05876, Ig3_L1-CAM, Third immunoglobulin (Ig)-like domain of the
L1 cell adhesion molecule (CAM). Ig3_L1-CAM: third
immunoglobulin (Ig)-like domain of the L1 cell adhesion
molecule (CAM). L1 belongs to the L1 subfamily of cell
adhesion molecules (CAMs) and is comprised of an
extracellular region having six Ig-like domains, five
fibronectin type III domains, a transmembrane region
and an intracellular domain. L1 is primarily expressed
in the nervous system and is involved in its
development and function. L1 is associated with an
X-linked recessive disorder, X-linked hydrocephalus,
MASA syndrome, or spastic paraplegia type 1, that
involves abnormalities of axonal growth. This group
also contains the chicken neuron-glia cell adhesion
molecule, Ng-CAM.
Length = 71
Score = 40.3 bits (94), Expect = 1e-05
Identities = 23/74 (31%), Positives = 29/74 (39%), Gaps = 15/74 (20%)
Query: 9 VTLNCKAEGKPEPTIEWYK-DGELVETSKSDAKSQRVILPTGSLFFLRVVH--GKKEQDG 65
+ L C AEG P P + W + DG L T L + + E D
Sbjct: 1 LVLECIAEGLPTPEVHWDRIDGPLSPNR------------TKKLNNNKTLQLDNVLESDD 48
Query: 66 GVYWCLARNSVGTA 79
G Y C A NS G+A
Sbjct: 49 GEYVCTAENSEGSA 62
>gnl|CDD|143173 cd04972, Ig_TrkABC_d4, Fourth domain (immunoglobulin-like) of Trk
receptors TrkA, TrkB and TrkC. TrkABC_d4: the fourth
domain of Trk receptors TrkA, TrkB and TrkC, this is an
immunoglobulin (Ig)-like domain which binds to
neurotrophin. The Trk family of receptors are tyrosine
kinase receptors. They are activated by dimerization,
leading to autophosphorylation of intracellular
tyrosine residues, and triggering the signal
transduction pathway. TrkA, TrkB, and TrkC share
significant sequence homology and domain organization.
The first three domains are leucine-rich domains. The
fourth and fifth domains are Ig-like domains playing a
part in ligand binding. TrkA, Band C mediate the
trophic effects of the neurotrophin Nerve growth factor
(NGF) family. TrkA is recognized by NGF. TrKB is
recognized by brain-derived neurotrophic factor (BDNF)
and neurotrophin (NT)-4. TrkC is recognized by NT-3.
NT-3 is promiscuous as in some cell systems it
activates TrkA and TrkB receptors. TrkA is a receptor
found in all major NGF targets, including the
sympathetic, trigeminal, and dorsal root ganglia,
cholinergic neurons of the basal forebrain and the
striatum. TrKB transcripts are found throughout
multiple structures of the central and peripheral
nervous systems. The TrkC gene is expressed throughout
the mammalian nervous system.
Length = 90
Score = 40.2 bits (94), Expect = 1e-05
Identities = 26/82 (31%), Positives = 39/82 (47%), Gaps = 9/82 (10%)
Query: 9 VTLNCKAEGKPEPTIEWYKDGELVETSKSDAKSQRVILPTGSLFFLRVVHGKKEQDGGVY 68
T+ C AEG P P +EW G +V +++D V ++ L++ + E V
Sbjct: 18 ATIRCTAEGSPLPKVEWIIAGLIVIQTRTDTLETTV-----DIYNLQLSNITSETQTTVT 72
Query: 69 WCLARNSVGTAVSRNATLQVAV 90
C A N VG A N ++QV V
Sbjct: 73 -CTAENPVGQA---NVSVQVTV 90
>gnl|CDD|212460 cd05723, Ig4_Neogenin, Fourth immunoglobulin (Ig)-like domain in
neogenin and similar proteins. Ig4_Neogenin: fourth
immunoglobulin (Ig)-like domain in neogenin and related
proteins. Neogenin is a cell surface protein which is
expressed in the developing nervous system of
vertebrate embryos in the growing nerve cells. It is
also expressed in other embryonic tissues, and may play
a general role in developmental processes such as cell
migration, cell-cell recognition, and tissue growth
regulation. Included in this group is the tumor
suppressor protein DCC, which is deleted in colorectal
carcinoma . DCC and neogenin each have four Ig-like
domains followed by six fibronectin type III domains, a
transmembrane domain, and an intracellular domain.
Length = 71
Score = 39.9 bits (93), Expect = 2e-05
Identities = 23/73 (31%), Positives = 36/73 (49%), Gaps = 9/73 (12%)
Query: 9 VTLNCKAEGKPEPTIEWYKDGELVETSKSDAKSQRVILPTGSLFFLRVVHGKKEQDGGVY 68
+ C+ GKP PT++W K+G++V S I+ +L L +V + D G Y
Sbjct: 2 IVFECEVTGKPTPTVKWVKNGDMVIPSDYFK-----IVKEHNLQVLGLV----KSDEGFY 52
Query: 69 WCLARNSVGTAVS 81
C+A N VG +
Sbjct: 53 QCIAENDVGNVQA 65
>gnl|CDD|143225 cd05748, Ig_Titin_like, Immunoglobulin (Ig)-like domain of titin
and similar proteins. Ig_Titin_like: immunoglobulin
(Ig)-like domain found in titin-like proteins. Titin
(also called connectin) is a fibrous sarcomeric protein
specifically found in vertebrate striated muscle. Titin
is gigantic, depending on isoform composition it ranges
from 2970 to 3700 kDa, and is of a length that spans
half a sarcomere. Titin largely consists of multiple
repeats of Ig-like and fibronectin type 3 (FN-III)-like
domains. Titin connects the ends of myosin thick
filaments to Z disks and extends along the thick
filament to the H zone. It appears to function
similarly to an elastic band, keeping the myosin
filaments centered in the sarcomere during muscle
contraction or stretching. Within the sarcomere, titin
is also attached to or is associated with myosin
binding protein C (MyBP-C). MyBP-C appears to
contribute to the generation of passive tension by
titin, and similar to titin has repeated Ig-like and
FN-III domains. Also included in this group are worm
twitchin and insect projectin, thick filament proteins
of invertebrate muscle, which also have repeated
Ig-like and FN-III domains.
Length = 74
Score = 39.5 bits (93), Expect = 2e-05
Identities = 22/74 (29%), Positives = 33/74 (44%), Gaps = 9/74 (12%)
Query: 17 GKPEPTIEWYKDGELVETSKSDAKSQRVILPTGSLFFLRVVHGKKEQDGGVYWCLARNSV 76
G+P PT+ W KDG+ ++ S RV + T + V+ + D G Y +N
Sbjct: 10 GRPTPTVTWSKDGKPLKL------SGRVQIETTASSTSLVIKNAERSDSGKYTLTLKNPA 63
Query: 77 GTAVSRNATLQVAV 90
G AT+ V V
Sbjct: 64 GEKS---ATINVKV 74
>gnl|CDD|143220 cd05743, Ig_Perlecan_D2_like, Immunoglobulin (Ig)-like domain II
(D2) of the human basement membrane heparan sulfate
proteoglycan perlecan, also known as HSPG2.
Ig_Perlecan_D2_like: the immunoglobulin (Ig)-like
domain II (D2) of the human basement membrane heparan
sulfate proteoglycan perlecan, also known as HSPG2.
Perlecan consists of five domains. Domain I has three
putative heparan sulfate attachment sites; domain II
has four LDL receptor-like repeats, and one Ig-like
repeat; domain III resembles the short arm of laminin
chains; domain IV has multiple Ig-like repeats (21
repeats in human perlecan); and domain V resembles the
globular G domain of the laminin A chain and internal
repeats of EGF. Perlecan may participate in a variety
of biological functions including cell binding,
LDL-metabolism, basement membrane assembly and
selective permeability, calcium binding, and growth-
and neurite-promoting activities.
Length = 78
Score = 39.4 bits (92), Expect = 3e-05
Identities = 22/73 (30%), Positives = 32/73 (43%), Gaps = 8/73 (10%)
Query: 7 EPVTLNCKAEGKPEPTIEWYKD-GELVETSKSDAKSQRVILPTGSLFFLRVVHGKKEQDG 65
E V C A G P P I W + G + ++++ S+ G+L + KE D
Sbjct: 2 ETVEFTCVATGVPTPIINWRLNWGHVPDSARVSITSEG---GYGTL----TIRDVKESDQ 54
Query: 66 GVYWCLARNSVGT 78
G Y C A N+ G
Sbjct: 55 GAYTCEAINTRGM 67
>gnl|CDD|143209 cd05732, Ig5_NCAM-1_like, Fifth immunoglobulin (Ig)-like domain
of Neural Cell Adhesion Molecule NCAM-1 (NCAM) and
similar proteins. Ig5_NCAM-1 like: domain similar to
the fifth immunoglobulin (Ig)-like domain of Neural
Cell Adhesion Molecule NCAM-1 (NCAM). NCAM plays
important roles in the development and regeneration of
the central nervous system, in synaptogenesis and
neural migration. NCAM mediates cell-cell and
cell-substratum recognition and adhesion via homophilic
(NCAM-NCAM), and heterophilic (NCAM-non-NCAM),
interactions. NCAM is expressed as three major isoforms
having different intracellular extensions. The
extracellular portion of NCAM has five N-terminal
Ig-like domains and two fibronectin type III domains.
The double zipper adhesion complex model for NCAM
homophilic binding involves Ig1, Ig2, and Ig3. By this
model, Ig1 and Ig2 mediate dimerization of NCAM
molecules situated on the same cell surface (cis
interactions), and Ig3 domains mediate interactions
between NCAM molecules expressed on the surface of
opposing cells (trans interactions), through binding to
the Ig1 and Ig2 domains. The adhesive ability of NCAM
is modulated by the addition of polysialic acid chains
to the fifth Ig-like domain. Also included in this
group is NCAM-2 (also known as OCAM/mamFas II and
RNCAM) NCAM-2 is differentially expressed in the
developing and mature olfactory epithelium (OE).
Length = 96
Score = 38.7 bits (90), Expect = 7e-05
Identities = 24/80 (30%), Positives = 35/80 (43%), Gaps = 15/80 (18%)
Query: 5 KNEPVTLNCKAEGKPEPTIEW------YKDGELVETSKSDAKSQ-RVILPTGSLFFLRVV 57
+ E +TL C+AEG P P I W + +G+ + + RV S L+ V
Sbjct: 15 ELEQITLTCEAEGDPIPEITWRRATRNFSEGDKSLDGRIVVRGHARV-----SSLTLKDV 69
Query: 58 HGKKEQDGGVYWCLARNSVG 77
+ D G Y C A N +G
Sbjct: 70 ---QLTDAGRYDCEASNRIG 86
>gnl|CDD|143276 cd05868, Ig4_NrCAM, Fourth immunoglobulin (Ig)-like domain of
NrCAM (NgCAM-related cell adhesion molecule). Ig4_
NrCAM: fourth immunoglobulin (Ig)-like domain of NrCAM
(NgCAM-related cell adhesion molecule). NrCAM belongs
to the L1 subfamily of cell adhesion molecules (CAMs)
and is comprised of an extracellular region having six
IG-like domains and five fibronectin type III domains,
a transmembrane region and an intracellular domain.
NrCAM is primarily expressed in the nervous system.
Length = 76
Score = 37.3 bits (86), Expect = 2e-04
Identities = 24/71 (33%), Positives = 38/71 (53%), Gaps = 7/71 (9%)
Query: 7 EPVTLNCKAEGKPEPTIEWYKDGELVETSKSDAKSQRVILPTGSLFFLRVVHGKKEQDGG 66
E TL C+A G P+P+I W +G +E + +D S++V ++ F +V +E+
Sbjct: 2 EDGTLICRANGNPKPSISWLTNGVPIEIAPTDP-SRKV--DGDTIIFSKV----QERSSA 54
Query: 67 VYWCLARNSVG 77
VY C A N G
Sbjct: 55 VYQCNASNEYG 65
>gnl|CDD|143277 cd05869, Ig5_NCAM-1, Fifth immunoglobulin (Ig)-like domain of
Neural Cell Adhesion Molecule NCAM-1 (NCAM).
Ig5_NCAM-1: The fifth immunoglobulin (Ig)-like domain
of Neural Cell Adhesion Molecule NCAM-1 (NCAM). NCAM
plays important roles in the development and
regeneration of the central nervous system, in
synaptogenesis and neural migration. NCAM mediates
cell-cell and cell-substratum recognition and adhesion
via homophilic (NCAM-NCAM) and heterophilic
(NCAM-non-NCAM) interactions. NCAM is expressed as
three major isoforms having different intracellular
extensions. The extracellular portion of NCAM has five
N-terminal Ig-like domains and two fibronectin type III
domains. The double zipper adhesion complex model for
NCAM homophilic binding involves Ig1, Ig2, and Ig3. By
this model, Ig1 and Ig2 mediate dimerization of NCAM
molecules situated on the same cell surface (cis
interactions), and Ig3 domains mediate interactions
between NCAM molecules expressed on the surface of
opposing cells (trans interactions), through binding to
the Ig1 and Ig2 domains. The adhesive ability of NCAM
is modulated by the addition of polysialic acid chains
to the fifth Ig-like domain.
Length = 97
Score = 37.3 bits (86), Expect = 3e-04
Identities = 18/71 (25%), Positives = 33/71 (46%), Gaps = 1/71 (1%)
Query: 7 EPVTLNCKAEGKPEPTIEWYKDGELVETSKSDAKSQRVILPTGSLFFLRVVHGKKEQDGG 66
E +TL C+A G P P+I W + +S+ +++ + + + + D G
Sbjct: 18 EQITLTCEASGDPIPSITW-RTSTRNISSEEKTLDGHIVVRSHARVSSLTLKYIQYTDAG 76
Query: 67 VYWCLARNSVG 77
Y C A N++G
Sbjct: 77 EYLCTASNTIG 87
>gnl|CDD|143236 cd05759, Ig2_KIRREL3-like, Second immunoglobulin (Ig)-like domain
of Kirrel (kin of irregular chiasm-like) 3 (also known
as Neph2). Ig2_KIRREL3-like: domain similar to the
second immunoglobulin (Ig)-like domain of Kirrel (kin
of irregular chiasm-like) 3 (also known as Neph2). This
protein has five Ig-like domains, one transmembrane
domain, and a cytoplasmic tail. Included in this group
is mammalian Kirrel (Neph1), Kirrel2 (Neph3), and
Drosophila RST (irregular chiasm C-roughest) protein.
These proteins contain multiple Ig domains, have
properties of cell adhesion molecules, and are
important in organ development.
Length = 82
Score = 36.7 bits (85), Expect = 3e-04
Identities = 22/79 (27%), Positives = 30/79 (37%), Gaps = 24/79 (30%)
Query: 8 PVTLNCKAEG-KPEPTIEWYKDGELVE------TSKSDAK-----SQRVILPTGSLFFLR 55
P L C+A G KP I W++DGE+++ D K S I P+
Sbjct: 1 PYNLTCRARGAKPAAEIIWFRDGEVLDGATYSKELLKDGKRETTVSTLPITPSDH----- 55
Query: 56 VVHGKKEQDGGVYWCLARN 74
G + C ARN
Sbjct: 56 -------DTGRTFTCRARN 67
>gnl|CDD|143260 cd05852, Ig5_Contactin-1, Fifth Ig domain of contactin-1.
Ig5_Contactin-1: fifth Ig domain of the neural cell
adhesion molecule contactin-1. Contactins are comprised
of six Ig domains followed by four fibronectin type III
(FnIII) domains anchored to the membrane by
glycosylphosphatidylinositol. Contactin-1 is
differentially expressed in tumor tissues and may
through a RhoA mechanism, facilitate invasion and
metastasis of human lung adenocarcinoma.
Length = 73
Score = 36.5 bits (84), Expect = 3e-04
Identities = 26/80 (32%), Positives = 35/80 (43%), Gaps = 10/80 (12%)
Query: 9 VTLNCKAEGKPEPTIEWYKDGELVETSKSDAKSQRVILPTGSLFFLRVVHGKKEQDGGVY 68
V + CK + P+P W K EL+ + S+ I GSL L + + D G Y
Sbjct: 4 VIIECKPKAAPKPKFSWSKGTELLVNN-----SRISIWDDGSLEILNIT----KLDEGSY 54
Query: 69 WCLARNSVGTAVSRNATLQV 88
C A N+ G A S L V
Sbjct: 55 TCFAENNRGKANS-TGVLSV 73
>gnl|CDD|219745 pfam08205, C2-set_2, CD80-like C2-set immunoglobulin domain.
These domains belong to the immunoglobulin superfamily.
Length = 89
Score = 36.2 bits (84), Expect = 4e-04
Identities = 13/35 (37%), Positives = 17/35 (48%), Gaps = 1/35 (2%)
Query: 4 AKNEPVTLNCKAE-GKPEPTIEWYKDGELVETSKS 37
+N V C + GKP P I WY DG +E +
Sbjct: 12 GENLEVVATCSSAGGKPAPRITWYLDGRELEAITT 46
>gnl|CDD|143265 cd05857, Ig2_FGFR, Second immunoglobulin (Ig)-like domain of
fibroblast growth factor (FGF) receptor. Ig2_FGFR:
second immunoglobulin (Ig)-like domain of fibroblast
growth factor (FGF) receptor. FGF receptors bind FGF
signaling polypeptides. FGFs participate in multiple
processes such as morphogenesis, development, and
angiogenesis. FGFs bind to four FGF receptor tyrosine
kinases (FGFR1, -2, -3, -4). Receptor diversity is
controlled by alternative splicing producing splice
variants with different ligand binding characteristics
and different expression patterns. FGFRs have an
extracellular region comprised of three IG-like
domains, a single transmembrane helix, and an
intracellular tyrosine kinase domain. Ligand binding
and specificity reside in the Ig-like domains 2 and 3,
and the linker region that connects these two. FGFR
activation and signaling depend on FGF-induced
dimerization, a process involving cell surface heparin
or heparin sulfate proteoglycans.
Length = 85
Score = 36.4 bits (84), Expect = 5e-04
Identities = 26/84 (30%), Positives = 34/84 (40%), Gaps = 12/84 (14%)
Query: 9 VTLNCKAEGKPEPTIEWYKDGELVETSKSDAK--SQRVILPTGSLFFLRVVHGKKEQDGG 66
V C A G P PT+ W K+G+ K + + +V SL VV D G
Sbjct: 12 VKFRCPAAGNPTPTMRWLKNGKEF---KQEHRIGGYKVRNQHWSLIMESVV----PSDKG 64
Query: 67 VYWCLARNSVGTAVSRNATLQVAV 90
Y C+ N G S N T + V
Sbjct: 65 NYTCVVENEYG---SINHTYHLDV 85
>gnl|CDD|143224 cd05747, Ig5_Titin_like, M5, fifth immunoglobulin (Ig)-like
domain of human titin C terminus and similar proteins.
Ig5_Titin_like: domain similar to the M5, fifth
immunoglobulin (Ig)-like domain from the human titin C
terminus. Titin (also called connectin) is a fibrous
sarcomeric protein specifically found in vertebrate
striated muscle. Titin is gigantic; depending on
isoform composition it ranges from 2970 to 3700 kDa,
and is of a length that spans half a sarcomere. Titin
largely consists of multiple repeats of Ig-like and
fibronectin type 3 (FN-III)-like domains. Titin
connects the ends of myosin thick filaments to Z disks
and extends along the thick filament to the H zone, and
appears to function similar to an elastic band, keeping
the myosin filaments centered in the sarcomere during
muscle contraction or stretching.
Length = 92
Score = 36.2 bits (83), Expect = 5e-04
Identities = 20/77 (25%), Positives = 37/77 (48%), Gaps = 6/77 (7%)
Query: 1 MVVAKNEPVTLNCKAEGKPEPTIEWYKDGELVETSKSDAKSQRVILPTGSLFFLRVVHGK 60
+ V++ E +C +G+P PT+ W ++G+++ +S + Q S F + V
Sbjct: 13 LTVSEGESARFSCDVDGEPAPTVTWMREGQIIVSS---QRHQITSTEYKSTFEISKV--- 66
Query: 61 KEQDGGVYWCLARNSVG 77
+ D G Y + NS G
Sbjct: 67 QMSDEGNYTVVVENSEG 83
>gnl|CDD|143169 cd04968, Ig3_Contactin_like, Third Ig domain of contactin.
Ig3_Contactin_like: Third Ig domain of contactins.
Contactins are neural cell adhesion molecules and are
comprised of six Ig domains followed by four
fibronectin type III(FnIII) domains anchored to the
membrane by glycosylphosphatidylinositol. The first
four Ig domains form the intermolecular binding
fragment, which arranges as a compact U-shaped module
via contacts between Ig domains 1 and 4, and between Ig
domains 2 and 3. Contactin-2 (TAG-1, axonin-1) may play
a part in the neuronal processes of neurite outgrowth,
axon guidance and fasciculation, and neuronal
migration. This group also includes contactin-1 and
contactin-5. The different contactins show different
expression patterns in the central nervous system.
During development and in adulthood, contactin-2 is
transiently expressed in subsets of central and
peripheral neurons. Contactin-5 is expressed
specifically in the rat postnatal nervous system,
peaking at about 3 weeks postnatal, and a lack of
contactin-5 (NB-2) results in an impairment of neuronal
act ivity in the rat auditory system. Contactin-5 is
highly expressed in the adult human brain in the
occipital lobe and in the amygdala. Contactin-1 is
differentially expressed in tumor tissues and may,
through a RhoA mechanism, facilitate invasion and
metastasis of human lung adenocarcinoma.
Length = 88
Score = 35.9 bits (83), Expect = 6e-04
Identities = 23/75 (30%), Positives = 31/75 (41%), Gaps = 12/75 (16%)
Query: 4 AKNEPVTLNCKAEGKPEPTIEWYKDGELVETSKSDAKSQRVI-LPTGSLFFLRVVHGKKE 62
K + VTL C A G P P I+W K + +S + S V+ +P
Sbjct: 14 LKGQNVTLECFALGNPVPQIKWRKVDGSMPSSAEISMSGAVLKIPNIQF----------- 62
Query: 63 QDGGVYWCLARNSVG 77
+D G Y C A N G
Sbjct: 63 EDEGTYECEAENIKG 77
>gnl|CDD|143177 cd04976, Ig2_VEGFR, Second immunoglobulin (Ig)-like domain of
vascular endothelial growth factor receptor (VEGFR).
Ig2_VEGFR: Second immunoglobulin (Ig)-like domain of
vascular endothelial growth factor receptor (VEGFR).
The VEGFRs have an extracellular component with seven
Ig-like domains, a transmembrane segment, and an
intracellular tyrosine kinase domain interrupted by a
kinase-insert domain. The VEGFR family consists of
three members, VEGFR-1 (Flt-1), VEGFR-2 (KDR/Flk-1) and
VEGFR-3 (Flt-4). VEGFRs bind VEGFs with high affinity
at the Ig-like domains. VEGF-A is important to the
growth and maintenance of vascular endothelial cells
and to the development of new blood- and
lymphatic-vessels in physiological and pathological
states. VEGFR-2 is a major mediator of the mitogenic,
angiogenic and microvascular permeability-enhancing
effects of VEGF-A. VEGFR-1 may play an inhibitory part
in these processes by binding VEGF and interfering with
its interaction with VEGFR-2. VEGFR-1 has a signaling
role in mediating monocyte chemotaxis. VEGFR-2 and -1
may mediate a chemotactic and a survival signal in
hematopoietic stem cells or leukemia cells. VEGFR-3 has
been shown to be involved in tumor angiogenesis and
growth.
Length = 71
Score = 35.5 bits (82), Expect = 7e-04
Identities = 21/82 (25%), Positives = 34/82 (41%), Gaps = 11/82 (13%)
Query: 9 VTLNCKAEGKPEPTIEWYKDGELVETSKSDAKSQRVILPTGSLFFLRVVHGKKEQDGGVY 68
V L K + P P I+WYK+G+L+ + K+ K L + E+D G Y
Sbjct: 1 VRLPVKVKAYPPPEIQWYKNGKLI-SEKNRTKKSGHSL---------TIKDVTEEDAGNY 50
Query: 69 WCLARNSVGTAVSRNATLQVAV 90
+ N + + T + V
Sbjct: 51 TVVLTNKQ-AKLEKRLTFTLVV 71
>gnl|CDD|143301 cd05893, Ig_Palladin_C, C-terminal immunoglobulin (Ig)-like
domain of palladin. Ig_Palladin_C: C-terminal
immunoglobulin (Ig)-like domain of palladin. Palladin
belongs to the palladin-myotilin-myopalladin family.
Proteins belonging to this family contain multiple
Ig-like domains and function as scaffolds, modulating
actin cytoskeleton. Palladin binds to alpha-actinin
ezrin, vasodilator-stimulated phosphoprotein VASP,
SPIN90 (DIP, mDia interacting protein), and Src.
Palladin also binds F-actin directly, via its Ig3
domain. Palladin is expressed as several alternatively
spliced isoforms, having various combinations of
Ig-like domains, in a cell-type-specific manner. It has
been suggested that palladin's different Ig-like
domains may be specialized for distinct functions.
Length = 75
Score = 34.3 bits (78), Expect = 0.002
Identities = 24/81 (29%), Positives = 38/81 (46%), Gaps = 7/81 (8%)
Query: 9 VTLNCKAEGKPEPTIEWYKDGELVETSKSDAKSQRVILPTGSLFFL-RVVHGKKEQDGGV 67
V L C+ G P P I W K+ E + + + RV + + ++ ++ G ++D G
Sbjct: 1 VRLECRVSGVPHPQIFWKKENESLTHN-----TDRVSMHQDNCGYICLLIQGATKEDAGW 55
Query: 68 YWCLARNSVGTAVSRNATLQV 88
Y A+N G VS A L V
Sbjct: 56 YTVSAKNEAGI-VSCTARLDV 75
>gnl|CDD|143271 cd05863, Ig2_VEGFR-3, Second immunoglobulin (Ig)-like domain of
vascular endothelial growth factor receptor 3
(VEGFR-3). Ig2_VEGFR-3: Second immunoglobulin
(Ig)-like domain of vascular endothelial growth factor
receptor 3 (VEGFR-3). The VEGFRs have an extracellular
component with seven Ig-like domains, a transmembrane
segment, and an intracellular tyrosine kinase domain
interrupted by a kinase-insert domain. VEGFRs bind
VEGFs with high affinity at the Ig-like domains.
VEGFR-3 (Flt-4) binds two members of the VEGF family
(VEGF-C and -D) and is involved in tumor angiogenesis
and growth.
Length = 67
Score = 34.1 bits (78), Expect = 0.002
Identities = 21/82 (25%), Positives = 32/82 (39%), Gaps = 15/82 (18%)
Query: 9 VTLNCKAEGKPEPTIEWYKDGELVETSKSDAKSQRVILPTGSLFFLRVVHGKKEQDGGVY 68
V L K P P +WYKDG+L+ S Q ++ V E G Y
Sbjct: 1 VKLPVKVAAYPPPEFQWYKDGKLISGKHSQHSLQ-----------IKDV---TEASAGTY 46
Query: 69 WCLARNSVGTAVSRNATLQVAV 90
+ NS + + +L++ V
Sbjct: 47 TLVLWNSA-AGLEKRISLELIV 67
>gnl|CDD|143238 cd05761, Ig2_Necl-1-4_like, Second immunoglobulin (Ig)-like
domain of the nectin-like molecules Necl-1 - Necl-4
(also known as cell adhesion molecules CADM3, CADM1,
CADM2, and CADM4, respectively). Ig2_Necl-1-4_like:
domain similar to the second immunoglobulin (Ig)-like
domain of the nectin-like molecules Necl-1 (also known
as cell adhesion molecule 3 (CADM3)), Necl-2 (CADM1),
Necl-3 (CADM2) and Necl-4 (CADM4). These nectin-like
molecules have similar domain structures to those of
nectins. At least five nectin-like molecules have been
identified (Necl-1 - Necl-5). These have an
extracellular region containing three Ig-like domains,
one transmembrane region, and one cytoplasmic region.
The N-terminal Ig-like domain of the extracellular
region belongs to the V-type subfamily of Ig domains,
is essential to cell-cell adhesion, and plays a part in
the interaction with the envelope glycoprotein D of
various viruses. Necl-1 and Necl-2 have
Ca(2+)-independent homophilic and heterophilic
cell-cell adhesion activity. Necl-1 is specifically
expressed in neural tissue and is important to the
formation of synapses, axon bundles, and myelinated
axons. Necl-2 is expressed in a wide variety of
tissues, and is a putative tumour suppressor gene,
which is downregulated in aggressive neuroblastoma.
Necl-3 has been shown to accumulate in tissues of the
central and peripheral nervous system, where it is
expressed in ependymal cells and myelinated axons. It
is observed at the interface between the axon shaft and
the myelin sheath. Necl-4 is expressed on Schwann
cells, and plays a key part in initiating peripheral
nervous system (PNS) myelination. Necl-4 participates
in cell-cell adhesion and is proposed to play a role in
tumor suppression.
Length = 82
Score = 34.2 bits (79), Expect = 0.002
Identities = 21/70 (30%), Positives = 28/70 (40%), Gaps = 13/70 (18%)
Query: 9 VTLNCKAEG-KPEPTIEWYKD-----GELVETSKSDAKSQRVILPTGSLFFLRVVHGKKE 62
V L C + G KP TI W+K G ++ + K+ V T SL F +E
Sbjct: 2 VELTCTSSGSKPAATIRWFKGDKELKGVKLKEEDENGKTFTV---TSSLRF----QVDRE 54
Query: 63 QDGGVYWCLA 72
DG C
Sbjct: 55 DDGAPIICRV 64
>gnl|CDD|143278 cd05870, Ig5_NCAM-2, Fifth immunoglobulin (Ig)-like domain of
Neural Cell Adhesion Molecule NCAM-2 (also known as
OCAM/mamFas II and RNCAM). Ig5_NCAM-2: the fifth
immunoglobulin (Ig)-like domain of Neural Cell Adhesion
Molecule NCAM-2 (also known as OCAM/mamFas II and
RNCAM). NCAM-2 is organized similarly to NCAM ,
including five N-terminal Ig-like domains and two
fibronectin type III domains. NCAM-2 is differentially
expressed in the developing and mature olfactory
epithelium (OE), and may function like NCAM, as an
adhesion molecule.
Length = 98
Score = 33.8 bits (77), Expect = 0.005
Identities = 25/77 (32%), Positives = 35/77 (45%), Gaps = 7/77 (9%)
Query: 5 KNEPVTLNCKAEGKPEPTIEWYKDGELVETSKSDAKSQRVILPTG----SLFFLRVVHGK 60
+N TL+CKAEG+P P I W + + S+ D I G S ++ V
Sbjct: 15 ENGAATLSCKAEGEPIPEITWKRASDGHTFSEGDKSPDGRIEVKGQHGESSLHIKDV--- 71
Query: 61 KEQDGGVYWCLARNSVG 77
K D G Y C A + +G
Sbjct: 72 KLSDSGRYDCEAASRIG 88
>gnl|CDD|143233 cd05756, Ig1_IL1R_like, First immunoglobulin (Ig)-like domain of
interleukin-1 receptor (IL1R) and similar proteins.
Ig1_IL1R_like: domain similar to the first
immunoglobulin (Ig)-like domain of interleukin-1
receptor (IL1R). IL-1 alpha and IL-1 beta are cytokines
which participate in the regulation of inflammation,
immune responses, and hematopoiesis. These cytokines
bind to the IL-1 receptor type 1 (IL1R1), which is
activated on additional association with an accessory
protein, IL1RAP. IL-1 also binds a second receptor
designated type II (IL1R2). Mature IL1R1 consists of
three Ig-like domains, a transmembrane domain, and a
large cytoplasmic domain. Mature IL1R2 is organized
similarly except that it has a short cytoplasmic
domain. The latter does not initiate signal
transduction. A naturally occurring cytokine IL-1RA
(IL-1 receptor antagonist) is widely expressed and
binds to IL-1 receptors, inhibiting the binding of IL-1
alpha and IL-1 beta.
Length = 94
Score = 33.2 bits (76), Expect = 0.007
Identities = 20/79 (25%), Positives = 29/79 (36%), Gaps = 11/79 (13%)
Query: 2 VVAKNEPVTLNCKAEG-----KPEPTIEWYKDGELVETSKSDAKSQRVILPTGSLFFLRV 56
V + EPV + C P + WYK + R+ L+FL
Sbjct: 10 YVLEGEPVVIKCPLFYSYIAQSPGLNLTWYKSDGKTPIPTEER--SRMHQQKDLLWFLPA 67
Query: 57 VHGKKEQDGGVYWCLARNS 75
+D G+Y C+ RNS
Sbjct: 68 ----ALEDSGLYTCVVRNS 82
>gnl|CDD|143221 cd05744, Ig_Myotilin_C_like, Immunoglobulin (Ig)-like domain of
myotilin, palladin, and myopalladin.
Ig_Myotilin_like_C: immunoglobulin (Ig)-like domain in
myotilin, palladin, and myopalladin. Myotilin,
palladin, and myopalladin function as scaffolds that
regulate actin organization. Myotilin and myopalladin
are most abundant in skeletal and cardiac muscle;
palladin is ubiquitously expressed in the organs of
developing vertebrates and plays a key role in
cellular morphogenesis. The three family members each
interact with specific molecular partners: all three
bind to alpha-actinin; in addition, palladin also binds
to vasodilator-stimulated phosphoprotein (VASP) and
ezrin, myotilin binds to filamin and actin, and
myopalladin also binds to nebulin and cardiac ankyrin
repeat protein (CARP).
Length = 75
Score = 32.1 bits (73), Expect = 0.012
Identities = 25/83 (30%), Positives = 35/83 (42%), Gaps = 11/83 (13%)
Query: 9 VTLNCKAEGKPEPTIEWYKDGELVETSKSDAKSQRVIL---PTGSLFFLRVVHGKKEQDG 65
V L C+ P P I W K+ E++ + R+ L G + L + ++D
Sbjct: 1 VRLECRVSAIPPPQIFWKKNNEMLTYNTD-----RISLYQDNCGRICLL--IQNANKEDA 53
Query: 66 GVYWCLARNSVGTAVSRNATLQV 88
G Y A N G VS NA L V
Sbjct: 54 GWYTVSAVNEAGV-VSCNARLDV 75
>gnl|CDD|143217 cd05740, Ig_CEACAM_D4, Fourth immunoglobulin (Ig)-like domain of
carcinoembryonic antigen (CEA) related cell adhesion
molecule (CEACAM). Ig_CEACAM_D4: immunoglobulin
(Ig)-like domain 4 in carcinoembryonic antigen (CEA)
related cell adhesion molecule (CEACAM) protein
subfamily. The CEA family is a group of anchored or
secreted glycoproteins, expressed by epithelial cells,
leukocytes, endothelial cells and placenta. The CEA
family is divided into the CEACAM and
pregnancy-specific glycoprotein (PSG) subfamilies. This
group represents the CEACAM subfamily. CEACAM1 has many
important cellular functions, it is a cell adhesion
molecule, and a signaling molecule that regulates the
growth of tumor cells, it is an angiogenic factor, and
is a receptor for bacterial and viral pathogens,
including mouse hepatitis virus (MHV). In mice, four
isoforms of CEACAM1 generated by alternative splicing
have either two [D1, D4] or four [D1-D4] Ig-like
domains on the cell surface. This family corresponds to
the D4 Ig-like domain.
Length = 91
Score = 32.2 bits (73), Expect = 0.016
Identities = 28/88 (31%), Positives = 34/88 (38%), Gaps = 14/88 (15%)
Query: 3 VAKNEPVTLNCKAEGKPEPTIEWYKDGELVETSKSDAKSQRVILPTG--SLFFLRVVHGK 60
N+PVTL C+AEG+ I W +G S R+ L +L F V
Sbjct: 15 PEDNQPVTLTCEAEGQAT-YIWWVNNG-------SLLVPPRLQLSNDNRTLTFNNVT--- 63
Query: 61 KEQDGGVYWCLARNSVGTAVSRNATLQV 88
D G Y C A N V S L V
Sbjct: 64 -RSDTGHYQCEASNEVSNMTSDPYILNV 90
>gnl|CDD|143302 cd05894, Ig_C5_MyBP-C, C5 immunoglobulin (Ig) domain of cardiac
myosin binding protein C (MyBP-C). Ig_C5_MyBP_C : the
C5 immunoglobulin (Ig) domain of cardiac myosin binding
protein C (MyBP-C). MyBP_C consists of repeated
domains, Ig and fibronectin type 3, and various
linkers. Three isoforms of MYBP_C exist and are
included in this group: cardiac(c), and fast and slow
skeletal muscle (s) MyBP_C. cMYBP_C has insertions
between and inside domains and an additional
cardiac-specific Ig domain at the N-terminus. For
cMYBP_C an interaction has been demonstrated between
this C5 domain and the Ig C8 domain.
Length = 86
Score = 31.7 bits (72), Expect = 0.022
Identities = 25/89 (28%), Positives = 40/89 (44%), Gaps = 9/89 (10%)
Query: 2 VVAKNEPVTLNCKAEGKPEPTIEWYKDGELVETSKSDAKSQRVILPTGSLFFLRVVHGKK 61
VVA N+ + L+ G+P PT+ W + + ++ + + S F V+ G +
Sbjct: 7 VVAGNK-LRLDVPISGEPAPTVTWSRGDKAFTETEGRVRVESY--KDLSSF---VIEGAE 60
Query: 62 EQDGGVYWCLARNSVGTAVSRNATLQVAV 90
+D GVY N VG A+L V V
Sbjct: 61 REDEGVYTITVTNPVGEDH---ASLFVKV 86
>gnl|CDD|143259 cd05851, Ig3_Contactin-1, Third Ig domain of contactin-1.
Ig3_Contactin-1: Third Ig domain of the neural cell
adhesion molecule contactin-1. Contactins are comprised
of six Ig domains followed by four fibronectin type III
(FnIII) domains anchored to the membrane by
glycosylphosphatidylinositol. Contactin-1 is
differentially expressed in tumor tissues and may
through a RhoA mechanism, facilitate invasion and
metastasis of human lung adenocarcinoma.
Length = 88
Score = 31.5 bits (71), Expect = 0.030
Identities = 24/73 (32%), Positives = 32/73 (43%), Gaps = 10/73 (13%)
Query: 5 KNEPVTLNCKAEGKPEPTIEWYKDGELVETSKSDAKSQRVILPTGSLFFLRVVHGKKEQD 64
K + VTL C A G P P I W K E + + + S V L++ + + E D
Sbjct: 15 KGQNVTLECFALGNPVPVIRWRKILEPMPATAEISMSGAV---------LKIFNIQPE-D 64
Query: 65 GGVYWCLARNSVG 77
G Y C A N G
Sbjct: 65 EGTYECEAENIKG 77
>gnl|CDD|143178 cd04977, Ig1_NCAM-1_like, First immunoglobulin (Ig)-like domain
of neural cell adhesion molecule NCAM-1 and similar
proteins. Ig1_NCAM-1 like: first immunoglobulin
(Ig)-like domain of neural cell adhesion molecule
NCAM-1. NCAM-1 plays important roles in the development
and regeneration of the central nervous system, in
synaptogenesis and neural migration. NCAM mediates
cell-cell and cell-substratum recognition and adhesion
via homophilic (NCAM-NCAM), and heterophilic
(NCAM-nonNCAM), interactions. NCAM is expressed as
three major isoforms having different intracellular
extensions. The extracellular portion of NCAM has five
N-terminal Ig-like domains and two fibronectin type III
domains. The double zipper adhesion complex model for
NCAM homophilic binding involves the Ig1, Ig2, and Ig3
domains. By this model, Ig1 and Ig2 mediate
dimerization of NCAM molecules situated on the same
cell surface (cis interactions), and Ig3 domains
mediate interactions between NCAM molecules expressed
on the surface of opposing cells (trans interactions),
through binding to the Ig1 and Ig2 domains. The
adhesive ability of NCAM is modulated by the addition
of polysialic acid chains to the fifth Ig-like domain.
Also included in this group is NCAM-2 (also known as
OCAM/mamFas II and RNCAM). NCAM-2 is differentially
expressed in the developing and mature olfactory
epithelium (OE).
Length = 92
Score = 30.6 bits (69), Expect = 0.065
Identities = 16/67 (23%), Positives = 32/67 (47%), Gaps = 7/67 (10%)
Query: 13 CKAEGKPEPTIEWYK-DGELVETSKSDAKSQRVILPTGSLFFLRVVHGKKEQDGGVYWCL 71
C+ G+P+ I W+ +GE K + Q ++ + ++ +D G+Y C+
Sbjct: 22 CQVIGEPK-DISWFSPNGE-----KLVTQQQISVVQNDDVRSTLTIYNANIEDAGIYKCV 75
Query: 72 ARNSVGT 78
A ++ GT
Sbjct: 76 ATDAKGT 82
>gnl|CDD|143330 cd07706, IgV_TCR_delta, Immunoglobulin (Ig) variable (V) domain
of T-cell receptor (TCR) delta chain. IgV_TCR_delta:
immunoglobulin (Ig) variable (V) domain of the delta
chain of gamma/delta T-cell receptors (TCRs). TCRs
mediate antigen recognition by T lymphocytes, and are
heterodimers consisting of alpha and beta chains or
gamma and delta chains. Each chain contains a variable
(V) and a constant (C) region. The majority of T cells
contain alpha/beta TCRs but a small subset contain
gamma/delta TCRs. Alpha/beta TCRs recognize antigen as
peptide fragments presented by major histocompatibility
complex (MHC) molecules. Gamma/delta TCRs recognize
intact protein antigens; they recognize protein
antigens directly and without antigen processing, and
MHC independently of the bound peptide. Gamma/delta T
cells can also be stimulated by non-peptide antigens
such as small phosphate- or amine-containing compounds.
The variable domain of gamma/delta TCRs is responsible
for antigen recognition and is located at the
N-terminus of the receptor.
Length = 116
Score = 30.9 bits (70), Expect = 0.069
Identities = 20/80 (25%), Positives = 29/80 (36%), Gaps = 13/80 (16%)
Query: 3 VAKNEPVTLNCKAEGK-PEPTIEWYK---DGELV-----ETSKSDAKSQRV---ILPTGS 50
V E VTLNC+ E I WYK GE+ ++ +A R
Sbjct: 11 VQVGEEVTLNCRYETSWTNYYIFWYKQLPSGEMTFLIRQKSIYGNATKGRYSVNFQKAQK 70
Query: 51 LFFLRVVHGKKEQDGGVYWC 70
L + + +D Y+C
Sbjct: 71 SISL-TISALQLEDSAKYFC 89
>gnl|CDD|143274 cd05866, Ig1_NCAM-2, First immunoglobulin (Ig)-like domain of
neural cell adhesion molecule NCAM-2. Ig1_NCAM-2:
first immunoglobulin (Ig)-like domain of neural cell
adhesion molecule NCAM-2 (OCAM/mamFas II, RNCAM).
NCAM-2 is organized similarly to NCAM , including five
N-terminal Ig-like domains and two fibronectin type III
domains. NCAM-2 is differentially expressed in the
developing and mature olfactory epithelium (OE), and
may function like NCAM, as an adhesion molecule.
Length = 92
Score = 30.4 bits (68), Expect = 0.077
Identities = 21/79 (26%), Positives = 36/79 (45%), Gaps = 8/79 (10%)
Query: 11 LNCKAEGKPEPTIEWYK-DGELVETSKSDAKSQRVILPTGSLFFLRVVHGKKEQDGGVYW 69
C A G+PE +I+WY GE + SQRV++ + ++ +D G+Y
Sbjct: 20 FTCTAIGEPE-SIDWYNPQGEKI------VSSQRVVVQKEGVRSRLTIYNANIEDAGIYR 72
Query: 70 CLARNSVGTAVSRNATLQV 88
C A ++ G L++
Sbjct: 73 CQATDAKGQTQEATVVLEI 91
>gnl|CDD|143166 cd00098, IgC, Immunoglobulin Constant domain. IgC:
Immunoglobulin constant domain (IgC). Members of the
IgC family are components of immunoglobulin, T-cell
receptors, CD1 cell surface glycoproteins, secretory
glycoproteins A/C, and Major Histocompatibility Complex
(MHC) class I/II molecules. In immunoglobulins, each
chain is composed of one variable domain (IgV) and one
or more IgC domains. These names reflect the fact that
the variability in sequences is higher in the variable
domain than in the constant domain. The IgV domain is
responsible for antigen binding, and the IgC domain is
involved in oligomerization and molecular interactions.
Length = 95
Score = 30.5 bits (69), Expect = 0.079
Identities = 15/71 (21%), Positives = 27/71 (38%), Gaps = 8/71 (11%)
Query: 5 KNEPVTLNCKAEG--KPEPTIEWYKDGELVETSKSDAKSQRVILPTGSLFFLRV---VHG 59
VTL C A G P+ T+ W K+G+ + + + + + + + + V
Sbjct: 12 LGGSVTLTCLATGFYPPDITVTWLKNGKELTSGVT---TTPPVPNSDGTYSVSSQLTVSP 68
Query: 60 KKEQDGGVYWC 70
G Y C
Sbjct: 69 SDWNSGDTYTC 79
>gnl|CDD|143234 cd05757, Ig2_IL1R_like, Second immunoglobulin (Ig)-like domain of
interleukin-1 receptor (IL1R) and similar proteins.
Ig2_IL1R_like: domain similar to the second
immunoglobulin (Ig)-like domain of interleukin-1
receptor (IL1R). IL-1 alpha and IL-1 beta are
cytokines which participate in the regulation of
inflammation, immune responses, and hematopoiesis.
These cytokines bind to the IL-1 receptor type 1
(IL1R1), which is activated on additional association
with an accessory protein, IL1RAP. IL-1 also binds a
second receptor designated type II (IL1R2). Mature
IL1R1 consists of three IG-like domains, a
transmembrane domain, and a large cytoplasmic domain.
Mature IL1R2 is organized similarly except that it has
a short cytoplasmic domain. The latter does not
initiate signal transduction. A naturally occurring
cytokine IL-1RA (IL-1 receptor antagonist) is widely
expressed and binds to IL-1 receptors, inhibiting the
binding of IL-1 alpha and IL-1 beta. This group also
contains ILIR-like 1 (IL1R1L) which maps to the same
chromosomal location as IL1R1 and IL1R2.
Length = 92
Score = 30.4 bits (69), Expect = 0.085
Identities = 16/50 (32%), Positives = 23/50 (46%), Gaps = 10/50 (20%)
Query: 21 PTIEWYKDGELVETSKSDAKSQRVILPTGSLFFLRVVHGKKEQDGGVYWC 70
P ++WYKD +L+E R GS ++ V E+D G Y C
Sbjct: 30 PPVQWYKDCKLLE-------GDRKRFVKGSKLLIQNVT---EEDAGNYTC 69
>gnl|CDD|143167 cd00099, IgV, Immunoglobulin variable domain (IgV). IgV:
Immunoglobulin variable domain (IgV). Members of the
IgV family are components of immunoglobulin (Ig) and T
cell receptors. The basic structure of Ig molecules is
a tetramer of two light chains and two heavy chains
linked by disulfide bonds. In Ig, each chain is
composed of one variable domain (IgV) and one or more
constant domains (IgC); these names reflect the fact
that the variability in sequences is higher in the
variable domain than in the constant domain. Within the
variable domain, there are regions of even more
variability called the hypervariable or
complementarity-determining regions (CDRs) which are
responsible for antigen binding. A predominant feature
of most Ig domains is the disulfide bridge connecting 2
beta-sheets with a tryptophan residue packed against
the disulfide bond.
Length = 105
Score = 30.4 bits (69), Expect = 0.096
Identities = 20/93 (21%), Positives = 31/93 (33%), Gaps = 16/93 (17%)
Query: 1 MVVAKNEPVTLNCKAEGK-PEPTIEWYK--------------DGELVETSKSDAKSQRVI 45
+ V++ E VTL+C G I WY+ +
Sbjct: 1 LSVSEGESVTLSCTYSGSFSSYYIFWYRQKPGKGPELLIYISSNGSQYAGGVKGRFSGTR 60
Query: 46 LPTGSLFFLRVVHGKKEQDGGVYWCLARNSVGT 78
+ S F L + + +D VY+C S GT
Sbjct: 61 DSSKSSFTLT-ISSLQPEDSAVYYCAVSLSGGT 92
>gnl|CDD|143266 cd05858, Ig3_FGFR-2, Third immunoglobulin (Ig)-like domain of
fibroblast growth factor receptor 2 (FGFR2).
Ig3_FGFR-2-like; domain similar to the third
immunoglobulin (Ig)-like domain of human fibroblast
growth factor receptor 2 (FGFR2). Fibroblast growth
factors (FGFs) participate in morphogenesis,
development, angiogenesis, and wound healing. These
FGF-stimulated processes are mediated by four FGFR
tyrosine kinases (FGRF1-4). FGFRs are comprised of an
extracellular portion consisting of three Ig-like
domains, a transmembrane helix, and a cytoplasmic
portion having protein tyrosine kinase activity. The
highly conserved Ig-like domains 2 and 3, and the
linker region between D2 and D3 define a general
binding site for FGFs. FGFR2 is required for male sex
determination.
Length = 90
Score = 29.9 bits (67), Expect = 0.13
Identities = 25/80 (31%), Positives = 32/80 (40%), Gaps = 15/80 (18%)
Query: 9 VTLNCKAEGKPEPTIEWYKDGELVETSK--SDAKSQRVILPTGSL---------FFLRVV 57
V CK +P I+W K E SK D +L T + +LR V
Sbjct: 4 VEFVCKVYSDAQPHIQWLKHVE-KNGSKYGPDGLPYVTVLKTAGVNTTDKEMEVLYLRNV 62
Query: 58 HGKKEQDGGVYWCLARNSVG 77
+D G Y CLA NS+G
Sbjct: 63 ---TFEDAGEYTCLAGNSIG 79
>gnl|CDD|143172 cd04971, Ig_TrKABC_d5, Fifth domain (immunoglobulin-like) of Trk
receptors TrkA, TrkB and TrkC. TrkABC_d5: the fifth
domain of Trk receptors TrkA, TrkB and TrkC, this is an
immunoglobulin (Ig)-like domain which binds to
neurotrophin. The Trk family of receptors are tyrosine
kinase receptors. They are activated by dimerization,
leading to autophosphorylation of intracellular
tyrosine residues, and triggering the signal
transduction pathway. TrkA, TrkB, and TrkC share
significant sequence homology and domain organization.
The first three domains are leucine-rich domains. The
fourth and fifth domains are Ig-like domains playing a
part in ligand binding. TrkA, Band C mediate the
trophic effects of the neurotrophin Nerve growth factor
(NGF) family. TrkA is recognized by NGF. TrkB is
recognized by brain-derived neurotrophic factor (BDNF)
and neurotrophin (NT)-4. TrkC is recognized by NT-3.
NT-3 is promiscuous as in some cell systems it
activates TrkA and TrkB receptors. TrkA is a receptor
found in all major NGF targets, including the
sympathetic, trigeminal, and dorsal root ganglia,
cholinergic neurons of the basal forebrain and the
striatum. TrKB transcripts are found throughout
multiple structures of the central and peripheral
nervous systems. The TrkC gene is expressed throughout
the mammalian nervous system.
Length = 81
Score = 29.3 bits (66), Expect = 0.14
Identities = 18/68 (26%), Positives = 26/68 (38%), Gaps = 9/68 (13%)
Query: 17 GKPEPTIEWYKDGELVETSKSDAKSQRVILPT-----GSLFFLRVVHGKKEQDGGVYWCL 71
G P+PT+ WY +G ++ S + T G L F H + G Y +
Sbjct: 9 GNPKPTLTWYHNGAVLNESDYIRTEIHYEVTTPTEYHGCLQFDNPTH----VNNGNYTLV 64
Query: 72 ARNSVGTA 79
A N G
Sbjct: 65 ASNEYGQD 72
>gnl|CDD|143227 cd05750, Ig_Pro_neuregulin, Immunoglobulin (Ig)-like domain in
neuregulins (NRGs). Ig_Pro_neuregulin: immunoglobulin
(Ig)-like domain in neuregulins (NRGs). NRGs are
signaling molecules, which participate in cell-cell
interactions in the nervous system, breast, heart, and
other organ systems, and are implicated in the
pathology of diseases including schizophrenia, multiple
sclerosis, and breast cancer. There are four members of
the neuregulin gene family (NRG1, -2, -3, and -4). The
NRG-1 protein, binds to and activates the tyrosine
kinases receptors ErbB3 and ErbB4, initiating signaling
cascades. The other NRGs proteins bind one or the other
or both of these ErbBs. NRG-1 has multiple functions;
for example, in the brain it regulates various
processes such as radial glia formation and neuronal
migration, dendritic development, and expression of
neurotransmitters receptors; in the peripheral nervous
system NRG-1 regulates processes such as target cell
differentiation, and Schwann cell survival. There are
many NRG-1 isoforms, which arise from the alternative
splicing of mRNA. Less is known of the functions of the
other NRGs. NRG-2 and -3 are expressed predominantly in
the nervous system. NRG-2 is expressed by motor neurons
and terminal Schwann cells, and is concentrated near
synaptic sites and may be a signal that regulates
synaptic differentiation. NRG-4 has been shown to
direct pancreatic islet cell development towards the
delta-cell lineage.
Length = 75
Score = 29.0 bits (65), Expect = 0.20
Identities = 19/74 (25%), Positives = 29/74 (39%), Gaps = 6/74 (8%)
Query: 11 LNCKAEGK-PEPTIEWYKDGELVETSKSDAKSQRVILPTGSLFFLRVVHGK-KEQDGGVY 68
L C+A + P +W+KDG+ E ++ R I + K K D G Y
Sbjct: 3 LKCEATSEYPSLRFKWFKDGK--ELNRK--NKPRNIKIRNKKKNSELQINKAKLADSGEY 58
Query: 69 WCLARNSVGTAVSR 82
C+ N +G
Sbjct: 59 TCVVENILGNDTVT 72
>gnl|CDD|143216 cd05739, Ig3_RPTP_IIa_LAR_like, Third immunoglobulin (Ig)-like
domain of the receptor protein tyrosine phosphatase
(RPTP)-F, also known as LAR. Ig3_RPTP_IIa_LAR_like:
domain similar to the third immunoglobulin (Ig)-like
domain found in the receptor protein tyrosine
phosphatase (RPTP)-F, also known as LAR. LAR belongs to
the RPTP type IIa subfamily. Members of this subfamily
are cell adhesion molecule-like proteins involved in
central nervous system (CNS) development. They have
large extracellular portions, comprised of multiple
IG-like domains and two to nine fibronectin type III
(FNIII) domains, and a cytoplasmic portion having two
tandem phosphatase domains. Included in this group is
Drosophila LAR (DLAR).
Length = 69
Score = 28.7 bits (64), Expect = 0.22
Identities = 22/70 (31%), Positives = 31/70 (44%), Gaps = 12/70 (17%)
Query: 9 VTLNCKAEGKPEPTIEWYKDGELVETSKSDAKSQRVILPTGSLFFLRVVHGKKEQDGGVY 68
V L C A G P P ++W K GE E +K D +P G V+ + Y
Sbjct: 4 VNLTCVAVGAPMPYVKWMKGGE--ELTKEDE------MPVGR----NVLELTNIYESANY 51
Query: 69 WCLARNSVGT 78
C+A +S+G
Sbjct: 52 TCVAISSLGM 61
>gnl|CDD|143250 cd05773, Ig8_hNephrin_like, Eighth immunoglobulin-like domain of
nephrin. Ig8_hNephrin_like: domain similar to the
eighth immunoglobulin-like domain in human nephrin.
Nephrin is an integral component of the slit diaphragm,
and is a central component of the glomerular
ultrafilter. Nephrin plays a structural role, and has a
role in signaling. Nephrin is a transmembrane protein
having a short intracellular portion, and an
extracellular portion comprised of eight Ig-like
domains, and one fibronectin type III-like domain. The
extracellular portions of nephrin, from neighboring
foot processes of separate podocyte cells, may interact
with each other, and in association with other
components of the slit diaphragm, form a porous
molecular sieve within the slit pore. The
intracellular portion of nephrin is associated with
linker proteins, which connect nephrin to the actin
cytoskeleton. The intracellular portion is tyrosine
phosphorylated, and mediates signaling from the slit
diaphragm into the podocytes.
Length = 109
Score = 29.1 bits (65), Expect = 0.25
Identities = 18/70 (25%), Positives = 32/70 (45%), Gaps = 4/70 (5%)
Query: 10 TLNCKAEGKPEPTIEWYKDGELVETSKSDAKSQRVILPTGSLF--FLRVVHGKKEQDGGV 67
L C+A+G P W K+G V + + + TG++ L +++ D +
Sbjct: 27 NLVCQAQGVPRVQFRWAKNG--VPLDLGNPRYEETTEHTGTVHTSILTIINVSAALDYAL 84
Query: 68 YWCLARNSVG 77
+ C A NS+G
Sbjct: 85 FTCTAHNSLG 94
>gnl|CDD|143175 cd04974, Ig3_FGFR, Third immunoglobulin (Ig)-like domain of
fibroblast growth factor receptor (FGFR). Ig3_FGFR:
third immunoglobulin (Ig)-like domain of fibroblast
growth factor receptor (FGFR). Fibroblast growth
factors (FGFs) participate in morphogenesis,
development, angiogenesis, and wound healing. These
FGF-stimulated processes are mediated by four FGFR
tyrosine kinases (FGRF1-4). FGFRs are comprised of an
extracellular portion consisting of three Ig-like
domains, a transmembrane helix, and a cytoplasmic
portion having protein tyrosine kinase activity. The
highly conserved Ig-like domains 2 and 3, and the
linker region between D2 and D3 define a general
binding site for FGFs.
Length = 90
Score = 28.9 bits (65), Expect = 0.26
Identities = 28/91 (30%), Positives = 37/91 (40%), Gaps = 16/91 (17%)
Query: 9 VTLNCKAEGKPEPTIEWYKDGELVETSK--SDAKSQRVILPTGS---------LFFLRVV 57
V +CK +P I+W K E V SK D +L + +LR V
Sbjct: 4 VEFHCKVYSDAQPHIQWLKHVE-VNGSKYGPDGLPYVTVLKVAGINTTDNESEVLYLRNV 62
Query: 58 HGKKEQDGGVYWCLARNSVGTAVSRNATLQV 88
D G Y CLA NS+G + +A L V
Sbjct: 63 ---SFDDAGEYTCLAGNSIGPSHH-SAWLTV 89
>gnl|CDD|143272 cd05864, Ig2_VEGFR-2, Second immunoglobulin (Ig)-like domain of
vascular endothelial growth factor receptor 2
(VEGFR-2). Ig2_VEGF-2: Second immunoglobulin (Ig)-like
domain of vascular endothelial growth factor receptor 2
(VEGFR-2). The VEGFRs have an extracellular component
with seven Ig-like domains, a transmembrane segment,
and an intracellular tyrosine kinase domain interrupted
by a kinase-insert domain. VEGFRs bind VEGFs with high
affinity at the Ig-like domains. VEGFR-2 (KDR/Flk-1) is
a major mediator of the mitogenic, angiogenic and
microvascular permeability-enhancing effects of VEGF-A;
VEGF-A is important to the growth and maintenance of
vascular endothelial cells and to the development of
new blood- and lymphatic-vessels in physiological and
pathological states. VEGF-A also interacts with
VEGFR-1, which it binds more strongly than VEGFR-2.
VEGFR-2 and -1 may mediate a chemotactic and a survival
signal in hematopoietic stem cells or leukemia cells.
Length = 70
Score = 28.7 bits (64), Expect = 0.27
Identities = 10/25 (40%), Positives = 16/25 (64%)
Query: 9 VTLNCKAEGKPEPTIEWYKDGELVE 33
V + K G P P ++WYK+G+L+
Sbjct: 1 VKIPVKYYGYPPPEVKWYKNGQLIV 25
>gnl|CDD|143176 cd04975, Ig4_SCFR_like, Fourth immunoglobulin (Ig)-like domain of
stem cell factor receptor (SCFR) and similar proteins.
Ig4_SCFR_like; fourth immunoglobulin (Ig)-like domain of
stem cell factor receptor (SCFR). In addition to SCFR
this group also includes the fourth Ig domain of
platelet-derived growth factor receptors (PDGFR), alpha
and beta, the fourth Ig domain of macrophage colony
stimulating factor (M-CSF), and the Ig domain of the
receptor tyrosine kinase KIT. SCFR and the PDGFR alpha
and beta have similar organization: an extracellular
component having five Ig-like domains, a transmembrane
segment, and a cytoplasmic portion having protein
tyrosine kinase activity. SCFR and its ligand SCF are
critical for normal hematopoiesis, mast cell
development, melanocytes and gametogenesis. SCF binds to
the second and third Ig-like domains of SCFR, this
fourth Ig-like domain participates in SCFR dimerization,
which follows ligand binding. Deletion of this fourth
SCFR_Ig-like domain abolishes the ligand-induced
dimerization of SCFR and completely inhibits signal
transduction. PDGF is a potent mitogen for connective
tissue cells. PDGF-stimulated processes are mediated by
three different PDGFs (PDGF-A,-B, and C). PDGFR alpha
binds to all three PDGFs, whereas the PDGFR beta, binds
only to PDGF-B. In mice, PDGFR alpha, and PDGFR beta,
are essential for normal development.
Length = 101
Score = 28.8 bits (65), Expect = 0.30
Identities = 18/74 (24%), Positives = 26/74 (35%), Gaps = 8/74 (10%)
Query: 19 PEPTIEWYKDGE-LVETSKSDAKSQRV--ILPTGSLFFLRVVHGKKEQDGGVYWCLARNS 75
P P I W D L S+ L +R+ KE + G Y LA NS
Sbjct: 32 PPPHINWTYDNRTLTNKLTEIVTSENESEYRYVSELKLVRL----KESEAGTYTFLASNS 87
Query: 76 VGTA-VSRNATLQV 88
+ ++ + V
Sbjct: 88 DASKSLTFELYVNV 101
>gnl|CDD|143196 cd05719, Ig2_PVR_like, Second immunoglobulin (Ig) domain of
poliovirus receptor (PVR, also known as CD155) and
similar proteins. Ig2_PVR_like: domain similar to the
second immunoglobulin (Ig) domain of poliovirus
receptor (PVR, also known as CD155). Poliovirus (PV)
binds to its cellular receptor (PVR/CD155) to initiate
infection. CD155 is a membrane-anchored, single-span
glycoprotein; its extracellular region has three
Ig-like domains. There are four different isotypes of
CD155 (referred to as alpha, beta, gamma, and delta),
these result from alternate splicing of the CD155 mRNA,
and have identical extracellular domains. CD155-beta
and - gamma, are secreted, CD155-alpha and delta are
membrane-bound and function as PV receptors. The virus
recognition site is contained in the amino-terminal
domain, D1. Having the virus attachment site on the
receptor distal from the plasma membrane may be
important for successful initiation of infection of
cells by the virus. CD155 binds in the poliovirus
"canyon", it has a footprint similar to that of the
intercellular adhesion molecule-1 receptor on human
rhinoviruses. This group also includes the second
Ig-like domain of nectin-1 (also known as poliovirus
receptor related protein(PVRL)1; CD111).
Length = 95
Score = 28.5 bits (64), Expect = 0.35
Identities = 21/70 (30%), Positives = 29/70 (41%), Gaps = 16/70 (22%)
Query: 2 VVAKNEPVTLN--CKAEGKPEPTIEWYKD--GELVETSKSDA------KSQRVILPTGSL 51
V EPVT+ A GKP TI W GE SK + S+ ++P+
Sbjct: 10 VALGGEPVTVATCVSANGKPPATISWETTLGGEAETQSKENPNGTVTVTSEYRLVPS--- 66
Query: 52 FFLRVVHGKK 61
R +GK+
Sbjct: 67 ---REANGKE 73
>gnl|CDD|143305 cd05897, Ig2_IL1R2_like, Second immunoglobulin (Ig)-like domain
of interleukin-1 receptor-2 (IL1R2). Ig2_IL1R2_like:
domain similar to the second immunoglobulin (Ig)-like
domain of interleukin-1 receptor-2 (IL1R2). IL-1 alpha
and IL-1 beta are cytokines which participate in the
regulation of inflammation, immune responses, and
hematopoiesis. These cytokines bind to the IL-1
receptor type 1 (IL1R1), which is activated on
additional association with an accessory protein,
IL1RAP. IL-1 also binds the type II (IL1R2) represented
in this group. Mature IL1R2 consists of three IG-like
domains, a transmembrane domain, and a short
cytoplasmic domain. It lacks the large cytoplasmic
domain of Mature IL1R1, and does not initiate signal
transduction. A naturally occurring cytokine IL-1RA
(IL-1 receptor antagonist) is widely expressed and
binds to IL-1 receptors, inhibiting the binding of IL-1
alpha and IL-1 beta.
Length = 95
Score = 28.6 bits (64), Expect = 0.41
Identities = 14/69 (20%), Positives = 26/69 (37%), Gaps = 10/69 (14%)
Query: 23 IEWYKDGELVETSKSDAKSQRVILPTGSLFFLRVVHGKKEQDGGVYWC---LARNSVGTA 79
++WYKD L++ D + + + L + V D G Y C
Sbjct: 32 LQWYKDSVLLD---KDNEKFYSLKGSTYLHIIDVSLN----DSGYYTCKLQFTHEGKKYN 84
Query: 80 VSRNATLQV 88
++R L++
Sbjct: 85 ITRIIKLRI 93
>gnl|CDD|143267 cd05859, Ig4_PDGFR-alpha, Fourth immunoglobulin (Ig)-like domain
of platelet-derived growth factor receptor (PDGFR)
alpha. IG4_PDGFR-alpha: The fourth immunoglobulin
(Ig)-like domain of platelet-derived growth factor
receptor (PDGFR) alpha. PDGF is a potent mitogen for
connective tissue cells. PDGF-stimulated processes are
mediated by three different PDGFs (PDGF-A,-B, and C).
PDGFR alpha binds to all three PDGFs, whereas the PDGFR
beta (not included in this group) binds only to PDGF-B.
PDGF alpha is organized as an extracellular component
having five Ig-like domains, a transmembrane segment,
and a cytoplasmic portion having protein tyrosine
kinase activity. In mice, PDGFR alpha and PDGFR beta
are essential for normal development.
Length = 101
Score = 28.3 bits (63), Expect = 0.48
Identities = 19/69 (27%), Positives = 33/69 (47%), Gaps = 2/69 (2%)
Query: 7 EPVTLNCKAEGKPEPTIEWYKDGELVETSKSD-AKSQRVILPTGSLFFLRVVHGKKEQDG 65
E + E P P I W KD + + ++ S+ + T + L+++ KE+D
Sbjct: 19 EVKEFVVEVEAYPPPQIRWLKDNRTLIENLTEITTSEHNVQETRYVSKLKLIRA-KEEDS 77
Query: 66 GVYWCLARN 74
G+Y LA+N
Sbjct: 78 GLYTALAQN 86
>gnl|CDD|203711 pfam07654, C1-set, Immunoglobulin C1-set domain.
Length = 83
Score = 28.0 bits (63), Expect = 0.54
Identities = 11/34 (32%), Positives = 15/34 (44%), Gaps = 2/34 (5%)
Query: 6 NEPVTLNCKAEG-KPEP-TIEWYKDGELVETSKS 37
+P TL C G P T+ W K+G+ V
Sbjct: 8 GKPNTLVCLVTGFYPPDITVTWLKNGQEVTEGVE 41
>gnl|CDD|149544 pfam08527, PAD_M, Protein-arginine deiminase (PAD) middle domain.
This family represents the central non-catalytic domain
of protein-arginine deiminase. This domain has an
immunoglobulin-like fold.
Length = 159
Score = 28.4 bits (64), Expect = 0.63
Identities = 15/46 (32%), Positives = 19/46 (41%), Gaps = 7/46 (15%)
Query: 8 PVTLNCKAEGKPEPTIEWYKDGELV-ETSKSDAKSQRVILPTGSLF 52
+ L + P+ E YK LV SKSDA+ RV G
Sbjct: 68 QMVLRTQG---PDKLFEGYK---LVLHVSKSDAEKVRVFRARGGKS 107
>gnl|CDD|143299 cd05891, Ig_M-protein_C, C-terminal immunoglobulin (Ig)-like
domain of M-protein (also known as myomesin-2).
Ig_M-protein_C: the C-terminal immunoglobulin (Ig)-like
domain of M-protein (also known as myomesin-2).
M-protein is a structural protein localized to the
M-band, a transverse structure in the center of the
sarcomere, and is a candidate for M-band bridges.
M-protein is modular consisting mainly of repetitive
IG-like and fibronectin type III (FnIII) domains, and
has a muscle-type specific expression pattern.
M-protein is present in fast fibers.
Length = 92
Score = 27.6 bits (61), Expect = 0.80
Identities = 20/78 (25%), Positives = 32/78 (41%), Gaps = 7/78 (8%)
Query: 2 VVAKNEPVTLN--CKAEGKPEPTIEWYKDGELVETSKSDAKSQRVILPTGSLFFLRVVHG 59
VV E TLN C G P+P + W+K+ + +E S+ + + + G
Sbjct: 10 VVTIMEGKTLNLTCTVFGNPDPEVIWFKNDQDIELSE-----HYSVKLEQGKYASLTIKG 64
Query: 60 KKEQDGGVYWCLARNSVG 77
+D G Y +N G
Sbjct: 65 VTSEDSGKYSINVKNKYG 82
>gnl|CDD|143300 cd05892, Ig_Myotilin_C, C-terminal immunoglobulin (Ig)-like
domain of myotilin. Ig_Myotilin_C: C-terminal
immunoglobulin (Ig)-like domain of myotilin. Mytolin
belongs to the palladin-myotilin-myopalladin family.
Proteins belonging to the latter family contain
multiple Ig-like domains and function as scaffolds,
modulating actin cytoskeleton. Myotilin is most
abundant in skeletal and cardiac muscle, and is
involved in maintaining sarcomere integrity. It binds
to alpha-actinin, filamin and actin. Mutations in
myotilin lead to muscle disorders.
Length = 75
Score = 27.2 bits (60), Expect = 0.91
Identities = 23/83 (27%), Positives = 37/83 (44%), Gaps = 11/83 (13%)
Query: 9 VTLNCKAEGKPEPTIEWYKDGELVETSKSDAKSQRVIL---PTGSLFFLRVVHGKKEQDG 65
V L C+ P P I W ++ E+V+ + + R+ L +G + L + ++D
Sbjct: 1 VKLECQISAIPPPKIFWKRNNEMVQYN-----TDRISLYQDNSGRVTLL--IKNVNKKDA 53
Query: 66 GVYWCLARNSVGTAVSRNATLQV 88
G Y A N G A +A L V
Sbjct: 54 GWYTVSAVNEAGVATC-HARLDV 75
>gnl|CDD|143263 cd05855, Ig_TrkB_d5, Fifth domain (immunoglobulin-like) of Trk
receptor TrkB. TrkB_d5: the fifth domain of Trk
receptor TrkB, this is an immunoglobulin (Ig)-like
domain which binds to neurotrophin. The Trk family of
receptors are tyrosine kinase receptors, which mediate
the trophic effects of the neurotrophin Nerve growth
factor (NGF) family. The Trks are activated by
dimerization, leading to autophosphorylation of
intracellular tyrosine residues, and triggering the
signal transduction pathway. TrkB shares significant
sequence homology and domain organization with TrkA,
and TrkC. The first three domains are leucine-rich
domains. The fourth and fifth domains are Ig-like
domains playing a part in ligand binding. TrKB is
recognized by brain-derived neurotrophic factor (BDNF)
and neurotrophin (NT)-4. In some cell systems NT-3 can
activate TrkA and TrkB receptors. TrKB transcripts are
found throughout multiple structures of the central and
peripheral nervous systems.
Length = 79
Score = 27.1 bits (60), Expect = 1.1
Identities = 7/20 (35%), Positives = 15/20 (75%)
Query: 17 GKPEPTIEWYKDGELVETSK 36
G P+PT++W+ +G ++ S+
Sbjct: 9 GNPKPTLQWFHEGAILNESE 28
>gnl|CDD|143180 cd04979, Ig_Semaphorin_C, Immunoglobulin (Ig)-like domain of
semaphorin. Ig_Semaphorin_C; Immunoglobulin (Ig)-like
domain in semaphorins. Semaphorins are transmembrane
protein that have important roles in a variety of
tissues. Functionally, semaphorins were initially
characterized for their importance in the development
of the nervous system and in axonal guidance. Later
they have been found to be important for the formation
and functioning of the cardiovascular, endocrine,
gastrointestinal, hepatic, immune, musculoskeletal,
renal, reproductive, and respiratory systems.
Semaphorins function through binding to their receptors
and transmembrane semaphorins also serves as receptors
themselves. Although molecular mechanism of semaphorins
is poorly understood, the Ig-like domains may involve
in ligand binding or dimerization.
Length = 89
Score = 27.0 bits (60), Expect = 1.1
Identities = 20/92 (21%), Positives = 34/92 (36%), Gaps = 13/92 (14%)
Query: 2 VVAKNEPVTLNCKAEGK-PEPTIEWYKDGELVETSKSDAKSQRVILPTGSLFFLRVVHGK 60
V + V L C K ++ W G K + + + ++ G L +R V
Sbjct: 7 TVVEGNSVFLEC--SPKSNLASVVWLFQGG-PLQRKEEPEERLLVTEDGLL--IRSVS-- 59
Query: 61 KEQDGGVYWCLAR-NSVGTAVSRNATLQVAVV 91
D GVY C + + + AT + V+
Sbjct: 60 -PADAGVYTCQSVEHGFKQTL---ATYSLNVL 87
>gnl|CDD|143328 cd07704, Ig2_Nectin-3-4_like, Second immunoglobulin (Ig) domain
of nectin-3 (also known as poliovirus receptor related
protein 3), nectin-4 (poliovirus receptor related
protein 4) and similar proteins. Ig2_Nectin-3-4_like:
domain similar to the second immunoglobulin (Ig) domain
of nectin-3 (also known as poliovirus receptor related
protein 3) and nectin-4 (poliovirus receptor related
protein 4). Nectin-3 and nectin-4 belong to the nectin
family comprised of four transmembrane glycoproteins
(nectins-1 through 4). Nectins are synaptic cell
adhesion molecules (CAMs) which facilitate adhesion and
signaling at various intracellular junctions. Nectins
form homophilic cis-dimers, followed by homophilic and
heterophilic trans-dimers involved in cell-cell
adhesion. Nectin-2 and nectin-3 localize at
Sertoli-spermatid junctions where they form
heterophilic trans-interactions between the cells that
are essential for the formation and maintenance of the
junctions and for spermatid development. Nectin-3 has
also been shown to form a heterophilic
trans-interaction with nectin-1 in ciliary epithelia,
establishing the apex-apex adhesion between the pigment
and non-pigment cell layers. Nectin-4 has recently
been identified in several types of breast carcinoma
and can be used as a histological and serological
marker for breast cancer.
Length = 97
Score = 27.2 bits (60), Expect = 1.3
Identities = 9/25 (36%), Positives = 14/25 (56%), Gaps = 2/25 (8%)
Query: 13 CKAEGKPEPTIEWYKDGELVETSKS 37
C AEG+P + W + + TS+S
Sbjct: 25 CAAEGRPAADVTW--ETNVYGTSES 47
>gnl|CDD|233016 TIGR00546, lnt, apolipoprotein N-acyltransferase. This enzyme
transfers the acyl group to lipoproteins in the
lgt/lsp/lnt system which is found broadly in bacteria
but not in archaea. This model represents one component
of the "lipoprotein lgt/lsp/lnt system" genome property
[Protein fate, Protein modification and repair].
Length = 391
Score = 27.7 bits (62), Expect = 1.5
Identities = 12/48 (25%), Positives = 20/48 (41%), Gaps = 1/48 (2%)
Query: 65 GGVYWCLARNSVGTAVSRNATLQVAVVIFFISFFRFKLSAYLYDLFRG 112
G++W SV ++ A L V + ++ F L+AYL
Sbjct: 8 AGLFWLGIALSVNGFIAFVAGLLVVGLPALLALFPG-LAAYLLRRLAP 54
>gnl|CDD|143184 cd04983, IgV_TCR_alpha_like, Immunoglobulin (Ig) variable (V)
domain of T-cell receptor (TCR) alpha chain and similar
proteins. IgV_TCR_alpha: immunoglobulin (Ig) variable
domain of the alpha chain of alpha/beta T-cell antigen
receptors (TCRs). TCRs mediate antigen recognition by T
lymphocytes, and are composed of alpha and beta, or
gamma and delta, polypeptide chains with variable (V)
and constant (C) regions. This group represents the
variable domain of the alpha chain of TCRs and also
includes the variable domain of delta chains of TCRs.
Alpha/beta TCRs recognize antigen as peptide fragments
presented by major histocompatibility complex (MHC)
molecules. The variable domain of TCRs is responsible
for antigen recognition, and is located at the
N-terminus of the receptor. Gamma/delta TCRs recognize
intact protein antigens; they recognize proteins
antigens directly and without antigen processing, and
MHC independently of the bound peptide.
Length = 109
Score = 26.8 bits (60), Expect = 2.0
Identities = 17/82 (20%), Positives = 26/82 (31%), Gaps = 10/82 (12%)
Query: 7 EPVTLNCKAEGKPEPTIEWYK---DGELV-----ETSKSDAKSQR--VILPTGSLFFLRV 56
E VTLNC + WY+ ++ + + R L
Sbjct: 14 ENVTLNCNYSTSTFYYLFWYRQYPGQGPQFLIYISSNGEEKEKGRFSATLDKSRKSSSLH 73
Query: 57 VHGKKEQDGGVYWCLARNSVGT 78
+ + D VY+C S GT
Sbjct: 74 ISAAQLSDSAVYFCALSESGGT 95
>gnl|CDD|223383 COG0306, PitA, Phosphate/sulphate permeases [Inorganic ion
transport and metabolism].
Length = 326
Score = 27.2 bits (61), Expect = 2.3
Identities = 11/26 (42%), Positives = 16/26 (61%), Gaps = 1/26 (3%)
Query: 74 NSVGTAVSRNA-TLQVAVVIFFISFF 98
N+VGTAV A T + AV++ + F
Sbjct: 26 NAVGTAVGSGALTPRQAVLLAAVFNF 51
>gnl|CDD|224491 COG1575, MenA, 1,4-dihydroxy-2-naphthoate octaprenyltransferase
[Coenzyme metabolism].
Length = 303
Score = 27.2 bits (61), Expect = 2.4
Identities = 11/42 (26%), Positives = 19/42 (45%), Gaps = 8/42 (19%)
Query: 91 VIFFISFF----RFKLSAYLYDLFRGV----VNKTNNIRDIE 124
+I +++ R + L L G+ + NN+RDIE
Sbjct: 161 LIVLGAYYIQTGRLSWAILLPSLPVGILIANILLANNLRDIE 202
>gnl|CDD|233855 TIGR02410, carnitine_TMLD, trimethyllysine dioxygenase. Members of
this family with known function act as trimethyllysine
dioxygenase, an enzyme in the pathway for carnitine
biosynthesis from lysine. This enzyme is homologous to
gamma-butyrobetaine,2-oxoglutarate dioxygenase, which
catalyzes the last step in carnitine biosynthesis.
Members of this family appear to be eukaryotic only.
Length = 362
Score = 26.7 bits (59), Expect = 3.3
Identities = 11/60 (18%), Positives = 22/60 (36%), Gaps = 4/60 (6%)
Query: 10 TLNCKAEGKPEPTIEWYKDGELVETSKSDAKSQ-RVILPTGSLFFL---RVVHGKKEQDG 65
++C P ++YK +D ++ L G++ RV+H + G
Sbjct: 280 VMDCLNWSSPYDVPKFYKAIRRFNKIITDPDNEIEFKLRPGTVLIFDNWRVLHSRTSFTG 339
>gnl|CDD|216469 pfam01384, PHO4, Phosphate transporter family. This family
includes PHO-4 from Neurospora crassa which is a is a
Na(+)-phosphate symporter. This family also contains
the leukaemia virus receptor.
Length = 268
Score = 26.8 bits (60), Expect = 3.4
Identities = 10/26 (38%), Positives = 15/26 (57%), Gaps = 1/26 (3%)
Query: 74 NSVGTAVSRNA-TLQVAVVIFFISFF 98
NS+ T+V A T + AV++ I F
Sbjct: 8 NSIATSVGSRALTPKQAVILAAIFNF 33
>gnl|CDD|238153 cd00249, AGE, AGE domain; N-acyl-D-glucosamine 2-epimerase
domain; Responsible for intermediate epimerization
during biosynthesis of N-acetylneuraminic acid.
Catalytic mechanism is believed to be via nucleotide
elimination and readdition and is ATP modulated. AGE is
structurally and mechanistically distinct from the
other four types of epimerases. The AGE domain monomer
is composed of an alpha(6)/alpha(6)-barrel, the
structure of which is also found in glucoamylase and
cellulase. The active form is a homodimer. The
alignment also contains subtype III mannose 6-phosphate
isomerases.
Length = 384
Score = 26.9 bits (60), Expect = 3.4
Identities = 9/30 (30%), Positives = 12/30 (40%)
Query: 58 HGKKEQDGGVYWCLARNSVGTAVSRNATLQ 87
G + GG + CL R+ R LQ
Sbjct: 26 AGLDREAGGFFECLDRDGQPFDTDRRLWLQ 55
>gnl|CDD|224610 COG1696, DltB, Predicted membrane protein involved in D-alanine
export [Cell envelope biogenesis, outer membrane].
Length = 425
Score = 26.5 bits (59), Expect = 3.6
Identities = 9/20 (45%), Positives = 14/20 (70%)
Query: 95 ISFFRFKLSAYLYDLFRGVV 114
ISF+ FK AYL ++ G++
Sbjct: 119 ISFYTFKSIAYLVEVRDGLI 138
>gnl|CDD|143214 cd05737, Ig_Myomesin_like_C, C-temrinal immunoglobulin (Ig)-like
domain of myomesin and M-protein. Ig_Myomesin_like_C:
domain similar to the C-temrinal immunoglobulin
(Ig)-like domain of myomesin and M-protein. Myomesin
and M-protein are both structural proteins localized to
the M-band, a transverse structure in the center of the
sarcomere, and are candidates for M-band bridges. Both
proteins are modular, consisting mainly of repetitive
Ig-like and fibronectin type III (FnIII) domains.
Myomesin is expressed in all types of vertebrate
striated muscle; M-protein has a muscle-type specific
expression pattern. Myomesin is present in both slow
and fast fibers; M-protein is present only in fast
fibers. It has been suggested that myomesin acts as a
molecular spring with alternative splicing as a means
of modifying its elasticity.
Length = 92
Score = 25.5 bits (56), Expect = 4.8
Identities = 22/78 (28%), Positives = 32/78 (41%), Gaps = 7/78 (8%)
Query: 2 VVAKNEPVTLN--CKAEGKPEPTIEWYKDGELVETSKSDAKSQRVILPTGSLFFLRVVHG 59
VV E TLN C G P+P + W K+ + + S V + G L + G
Sbjct: 10 VVTIMEGKTLNLTCTVFGDPDPEVSWLKNDQALALS----DHYNVKVEQGKYASL-TIKG 64
Query: 60 KKEQDGGVYWCLARNSVG 77
+D G Y + +N G
Sbjct: 65 VSSEDSGKYGIVVKNKYG 82
>gnl|CDD|177175 MTH00113, ND3, NADH dehydrogenase subunit 3; Provisional.
Length = 114
Score = 25.6 bits (57), Expect = 5.5
Identities = 9/19 (47%), Positives = 10/19 (52%), Gaps = 3/19 (15%)
Query: 93 FFISFFRFKLSAYLYDLFR 111
F I FF L A L+ LF
Sbjct: 51 FSIRFF---LVAILFLLFD 66
>gnl|CDD|222777 PHA00144, PHA00144, major head protein.
Length = 438
Score = 26.0 bits (57), Expect = 5.7
Identities = 9/42 (21%), Positives = 16/42 (38%)
Query: 48 TGSLFFLRVVHGKKEQDGGVYWCLARNSVGTAVSRNATLQVA 89
S F + + V W + S GT++S + L +
Sbjct: 363 GKSQGFTAYIRAPDNKGHAVVWYVEGGSTGTSISNDGVLTIG 404
>gnl|CDD|143304 cd05896, Ig1_IL1RAPL-1_like, First immunoglobulin (Ig)-like
domain of X-linked interleukin-1 receptor accessory
protein-like 1 (IL1RAPL-1). Ig1_ IL1RAPL-1_like:
domain similar to the first immunoglobulin (Ig)-like
domain of X-linked interleukin-1 receptor accessory
protein-like 1 (IL1RAPL-1). IL-1 alpha and IL-1 beta
are cytokines which participates in the regulation of
inflammation, immune responses, and hematopoiesis.
These cytokines bind to the IL-1 receptor type 1
(IL1R1), which is activated on additional association
with an accessory protein, IL1RAP. IL-1 also binds a
second receptor designated type II (IL1R2). Mature
IL1R1 consists of three Ig-like domains, a
transmembrane domain, and a large cytoplasmic domain.
Mature IL1R2 is organized similarly except that it has
a short cytoplasmic domain. The latter does not
initiate signal transduction. A naturally occurring
cytokine IL-1RA (IL-1 receptor antagonist) is widely
expressed and binds to IL-1 receptors, inhibiting the
binding of IL-1 alpha and IL-1 beta. IL1RAPL is encoded
by a gene on the X-chromosome, this gene is wholly or
partially deleted in multiple cases of non-syndromic
mental retardation. This group also contains IL1RAPL-2,
which is also encoded by a gene on the X-chromosome and
is a candidate for another non-syndromic mental
retardation loci.
Length = 104
Score = 25.3 bits (55), Expect = 6.7
Identities = 16/52 (30%), Positives = 24/52 (46%), Gaps = 5/52 (9%)
Query: 25 WYKD-GELVETSKSDAKSQRVILPTGSLFFLRVVHGKKEQDGGVYWCLARNS 75
WYK G+ E + R+ S++F + QD G+Y C+ RNS
Sbjct: 45 WYKSSGDGEEPIEIIFDGVRMSKEEDSIWF----RPAELQDSGLYTCVLRNS 92
>gnl|CDD|217059 pfam02480, Herpes_gE, Alphaherpesvirus glycoprotein E.
Glycoprotein E (gE) of Alphaherpesvirus forms a complex
with glycoprotein I (gI) (pfam01688), functioning as an
immunoglobulin G (IgG) Fc binding protein. gE is
involved in virus spread but is not essential for
propagation.
Length = 437
Score = 25.5 bits (56), Expect = 9.4
Identities = 19/82 (23%), Positives = 25/82 (30%), Gaps = 11/82 (13%)
Query: 14 KAEGKPEPTIEWYKDGELVETSKS-------DAKSQRVILPTGSLFFLRVVHGKKEQDGG 66
KA P E+Y ++ + R+ G L L EQD G
Sbjct: 47 KAREAPLALAEFYVRNGRLKRIEDVYFVGENPTVFPRLTANKGGLSILNA----TEQDSG 102
Query: 67 VYWCLARNSVGTAVSRNATLQV 88
VY R G A + V
Sbjct: 103 VYTLYVRGDPGEAHQSAVVVTV 124
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
0.321 0.136 0.404
Gapped
Lambda K H
0.267 0.0637 0.140
Matrix: BLOSUM62
Gap Penalties: Existence: 11, Extension: 1
Number of Sequences: 44354
Number of Hits to DB: 6,118,593
Number of extensions: 512481
Number of successful extensions: 646
Number of sequences better than 10.0: 1
Number of HSP's gapped: 600
Number of HSP's successfully gapped: 111
Length of query: 124
Length of database: 10,937,602
Length adjustment: 85
Effective length of query: 39
Effective length of database: 7,167,512
Effective search space: 279532968
Effective search space used: 279532968
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 (21.8 bits)
S2: 53 (24.4 bits)