RPS-BLAST 2.2.26 [Sep-21-2011]
Database: CDD.v3.10
44,354 sequences; 10,937,602 total letters
Searching..................................................done
Query= psy12428
(60 letters)
>gnl|CDD|191810 pfam07679, I-set, Immunoglobulin I-set domain.
Length = 90
Score = 66.1 bits (162), Expect = 2e-16
Identities = 25/51 (49%), Positives = 31/51 (60%)
Query: 9 PLNSSNILDLKYKNGVASLQIQEVFPEDEGVYVCTATNSLGTAETKCKLTV 59
PL SS+ + Y+ G +L I V P+DEG Y C ATNS G AE +LTV
Sbjct: 40 PLRSSDRFKVTYEGGTYTLTISNVQPDDEGKYTCVATNSAGEAEASAELTV 90
>gnl|CDD|214653 smart00410, IG_like, Immunoglobulin like. IG domains that cannot
be classified into one of IGv1, IGc1, IGc2, IG.
Length = 85
Score = 48.3 bits (115), Expect = 2e-09
Identities = 20/55 (36%), Positives = 25/55 (45%)
Query: 5 NSTIPLNSSNILDLKYKNGVASLQIQEVFPEDEGVYVCTATNSLGTAETKCKLTV 59
L S + ++L I V PED G Y C ATNS G+A + LTV
Sbjct: 31 QGGKLLAESGRFSVSRSGSTSTLTISNVTPEDSGTYTCAATNSSGSASSGTTLTV 85
>gnl|CDD|214652 smart00409, IG, Immunoglobulin.
Length = 85
Score = 48.3 bits (115), Expect = 2e-09
Identities = 20/55 (36%), Positives = 25/55 (45%)
Query: 5 NSTIPLNSSNILDLKYKNGVASLQIQEVFPEDEGVYVCTATNSLGTAETKCKLTV 59
L S + ++L I V PED G Y C ATNS G+A + LTV
Sbjct: 31 QGGKLLAESGRFSVSRSGSTSTLTISNVTPEDSGTYTCAATNSSGSASSGTTLTV 85
>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 = 47.0 bits (112), Expect = 3e-09
Identities = 21/58 (36%), Positives = 29/58 (50%), Gaps = 6/58 (10%)
Query: 2 KHDNSTIPLNSSNILDLKYKNGVASLQIQEVFPEDEGVYVCTATNSLGTAETKCKLTV 59
+ ++ +P + ILD K SL+I+ V DEG Y C A N +G E LTV
Sbjct: 18 RKEDGELPKGRAEILDDK------SLKIRNVTAGDEGSYTCEAENMVGKIEASASLTV 69
>gnl|CDD|197706 smart00408, IGc2, Immunoglobulin C-2 Type.
Length = 63
Score = 38.9 bits (91), Expect = 5e-06
Identities = 16/41 (39%), Positives = 20/41 (48%), Gaps = 4/41 (9%)
Query: 9 PLNSSNILDLKYKNGVASLQIQEVFPEDEGVYVCTATNSLG 49
PL SN ++L I+ V ED G+Y C A NS G
Sbjct: 27 PLPESNRFVA----SGSTLTIKSVSLEDSGLYTCVAENSAG 63
>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 = 38.9 bits (91), Expect = 6e-06
Identities = 20/53 (37%), Positives = 26/53 (49%), Gaps = 3/53 (5%)
Query: 8 IPLNSSNILDLKYKNGVASLQIQEVFPEDEGVYVCTATNSLGTAETK-CKLTV 59
PLN N +G +L I E DEG Y C ATN +G E+ +L+V
Sbjct: 36 QPLNLDNERVRIVDDG--NLLIAEARKSDEGTYKCVATNMVGERESAAARLSV 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 = 38.2 bits (88), Expect = 1e-05
Identities = 14/36 (38%), Positives = 18/36 (50%)
Query: 19 KYKNGVASLQIQEVFPEDEGVYVCTATNSLGTAETK 54
+G ++L I V ED G Y C A+NS GT
Sbjct: 37 GTSSGSSTLTISNVTLEDSGTYTCVASNSAGTVSAS 72
>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 = 37.6 bits (87), Expect = 2e-05
Identities = 18/41 (43%), Positives = 23/41 (56%)
Query: 19 KYKNGVASLQIQEVFPEDEGVYVCTATNSLGTAETKCKLTV 59
K N +LQ+ V D+G YVCTA NS G+A +TV
Sbjct: 30 KKLNNNKTLQLDNVLESDDGEYVCTAENSEGSARHHYTVTV 70
>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 = 37.3 bits (87), Expect = 2e-05
Identities = 19/42 (45%), Positives = 27/42 (64%)
Query: 19 KYKNGVASLQIQEVFPEDEGVYVCTATNSLGTAETKCKLTVR 60
K++N +L+I V ED+G Y CTA+NSLG+A +TV
Sbjct: 30 KFENFNKTLKIDNVSEEDDGEYRCTASNSLGSARHTISVTVE 71
>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 = 36.8 bits (85), Expect = 4e-05
Identities = 15/31 (48%), Positives = 18/31 (58%)
Query: 29 IQEVFPEDEGVYVCTATNSLGTAETKCKLTV 59
I +V ED GVY CTA N+ G+ LTV
Sbjct: 44 IVDVKIEDTGVYSCTAQNTAGSISANATLTV 74
>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 = 35.5 bits (82), Expect = 1e-04
Identities = 15/34 (44%), Positives = 18/34 (52%)
Query: 26 SLQIQEVFPEDEGVYVCTATNSLGTAETKCKLTV 59
SL+I V DEG Y C A N G A + L+V
Sbjct: 40 SLEILNVTKSDEGKYTCFAENFFGKANSTGSLSV 73
>gnl|CDD|143231 cd05754, Ig3_Perlecan_like, Third immunoglobulin (Ig)-like domain
found in Perlecan and similar proteins.
Ig3_Perlecan_like: domain similar to the third
immunoglobulin (Ig)-like domain found in Perlecan.
Perlecan is a large multi-domain heparin sulfate
proteoglycan, important in tissue development and
organogenesis. Perlecan can be represented as 5 major
portions; its fourth major portion (domain IV) is a
tandem repeat of immunoglobulin-like domains
(Ig2-Ig15), which can vary in size due to alternative
splicing. Perlecan binds many cellular and
extracellular ligands. Its domain IV region has many
binding sites. Some of these have been mapped at the
level of individual Ig-like domains, including a site
restricted to the Ig5 domain for heparin/sulfatide, a
site restricted to the Ig3 domain for nidogen-1 and
nidogen-2, a site restricted to Ig4-5 for fibronectin,
and sites restricted to Ig2 and to Ig13-15 for
fibulin-2.
Length = 85
Score = 34.8 bits (80), Expect = 3e-04
Identities = 14/31 (45%), Positives = 16/31 (51%)
Query: 27 LQIQEVFPEDEGVYVCTATNSLGTAETKCKL 57
L I+ V D G YVCT +N L T E L
Sbjct: 54 LTIRNVQLSDAGTYVCTGSNMLDTDEATATL 84
>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 = 32.8 bits (75), Expect = 0.002
Identities = 13/35 (37%), Positives = 18/35 (51%)
Query: 25 ASLQIQEVFPEDEGVYVCTATNSLGTAETKCKLTV 59
A L+I + EDEG Y C A N G + ++ V
Sbjct: 53 AVLKIPNIQFEDEGTYECEAENIKGKDTHQGRIYV 87
>gnl|CDD|214650 smart00406, IGv, Immunoglobulin V-Type.
Length = 81
Score = 32.4 bits (74), Expect = 0.002
Identities = 13/46 (28%), Positives = 15/46 (32%), Gaps = 10/46 (21%)
Query: 7 TIPLNSSNILDLKYKNGV----------ASLQIQEVFPEDEGVYVC 42
I N S+ YK SL I + ED G Y C
Sbjct: 34 YIGSNGSSYYQESYKGRFTISKDTSKNDVSLTISNLRVEDTGTYYC 79
>gnl|CDD|143174 cd04973, Ig1_FGFR, First immunoglobulin (Ig)-like domain of
fibroblast growth factor receptor (FGFR). Ig1_FGFR:
The first 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 all FGFs.
Length = 79
Score = 32.2 bits (73), Expect = 0.003
Identities = 10/33 (30%), Positives = 18/33 (54%)
Query: 27 LQIQEVFPEDEGVYVCTATNSLGTAETKCKLTV 59
+QI++ P D G+Y C ++ G+ T + V
Sbjct: 47 VQIKDAVPRDSGLYACVTSSPSGSDTTYFSVNV 79
>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 = 32.1 bits (73), Expect = 0.004
Identities = 13/16 (81%), Positives = 13/16 (81%)
Query: 36 DEGVYVCTATNSLGTA 51
DEGVYVC A NSLG A
Sbjct: 75 DEGVYVCVAHNSLGEA 90
>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 = 31.4 bits (71), Expect = 0.005
Identities = 14/36 (38%), Positives = 18/36 (50%)
Query: 24 VASLQIQEVFPEDEGVYVCTATNSLGTAETKCKLTV 59
+ L I P+D G+Y CTA NS G L+V
Sbjct: 46 IGQLVIYNAQPQDAGLYTCTARNSGGLLRANFPLSV 81
>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 = 31.0 bits (70), Expect = 0.006
Identities = 12/32 (37%), Positives = 18/32 (56%)
Query: 27 LQIQEVFPEDEGVYVCTATNSLGTAETKCKLT 58
L I++V D+G Y C A N++G A L+
Sbjct: 38 LAIRDVGVADQGRYECVARNTIGYASVSMVLS 69
>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 = 30.5 bits (69), Expect = 0.010
Identities = 15/53 (28%), Positives = 24/53 (45%), Gaps = 2/53 (3%)
Query: 9 PLNSSNILDLKYKNGVASLQIQEVFPEDEGVYVCTATNSLGT--AETKCKLTV 59
+ S + + + G +L I++V D+G Y C A N+ G LTV
Sbjct: 26 HVPDSARVSITSEGGYGTLTIRDVKESDQGAYTCEAINTRGMVFGIPDGILTV 78
>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 = 30.4 bits (69), Expect = 0.010
Identities = 12/19 (63%), Positives = 13/19 (68%), Gaps = 1/19 (5%)
Query: 34 PED-EGVYVCTATNSLGTA 51
ED EG Y C A+N LGTA
Sbjct: 51 AEDYEGEYQCYASNELGTA 69
>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 = 30.7 bits (69), Expect = 0.011
Identities = 14/34 (41%), Positives = 20/34 (58%)
Query: 26 SLQIQEVFPEDEGVYVCTATNSLGTAETKCKLTV 59
+L+I V D+G Y C A N +G+ T +LTV
Sbjct: 41 TLRISRVALHDQGQYECQAVNIVGSQRTVAQLTV 74
>gnl|CDD|143195 cd05718, Ig1_PVR_like, First immunoglobulin (Ig) domain of
poliovirus receptor (PVR, also known as CD155) and
similar proteins. Ig1_PVR_like: domain similar to the
first 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),
that 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" with a footprint similar to that of the
intercellular adhesion molecule-1 receptor on human
rhinoviruses. This group also includes the first
Ig-like domain of nectin-1 (also known as poliovirus
receptor related protein(PVRL)1; CD111), nectin-3 (also
known as PVRL 3), nectin-4 (also known as PVRL4; LNIR
receptor)and DNAX accessory molecule 1 (DNAM-1; CD226).
Length = 98
Score = 30.4 bits (69), Expect = 0.014
Identities = 14/36 (38%), Positives = 19/36 (52%), Gaps = 1/36 (2%)
Query: 25 ASLQIQEVFPEDEGVYVCT-ATNSLGTAETKCKLTV 59
A++ I + EDEG Y+C AT G + LTV
Sbjct: 62 ATISISNLRLEDEGNYICEFATFPQGNRQKVTTLTV 97
>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 = 29.9 bits (67), Expect = 0.024
Identities = 12/30 (40%), Positives = 17/30 (56%)
Query: 25 ASLQIQEVFPEDEGVYVCTATNSLGTAETK 54
SL I+ V ED G Y+C +N +G +K
Sbjct: 44 GSLLIKHVLEEDSGYYLCKVSNDVGADASK 73
>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 = 29.8 bits (67), Expect = 0.031
Identities = 11/27 (40%), Positives = 17/27 (62%)
Query: 23 GVASLQIQEVFPEDEGVYVCTATNSLG 49
V+SL +++V D G Y C A+N +G
Sbjct: 60 RVSSLTLKDVQLTDAGRYDCEASNRIG 86
>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 = 29.1 bits (66), Expect = 0.040
Identities = 10/35 (28%), Positives = 12/35 (34%)
Query: 25 ASLQIQEVFPEDEGVYVCTATNSLGTAETKCKLTV 59
SL I+ D G Y T N G + V
Sbjct: 40 TSLVIKNAERSDSGKYTLTLKNPAGEKSATINVKV 74
>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 = 28.9 bits (64), Expect = 0.049
Identities = 13/24 (54%), Positives = 15/24 (62%)
Query: 27 LQIQEVFPEDEGVYVCTATNSLGT 50
LQI+ D+G Y C ATNS GT
Sbjct: 40 LQIENSEESDQGKYECVATNSAGT 63
>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 = 29.2 bits (66), Expect = 0.053
Identities = 15/41 (36%), Positives = 20/41 (48%), Gaps = 8/41 (19%)
Query: 25 ASLQIQEVFPEDEGVYVCTATNSLGTAE------TKCKLTV 59
+L I + PED VY C + S GT + T +LTV
Sbjct: 67 FTLTISSLQPEDSAVYYCAVSLSGGTYKLYFGQGT--RLTV 105
>gnl|CDD|219514 pfam07686, V-set, Immunoglobulin V-set domain. This domain is
found in antibodies as well as neural protein P0 and
CTL4 amongst others.
Length = 114
Score = 28.7 bits (64), Expect = 0.074
Identities = 8/26 (30%), Positives = 10/26 (38%)
Query: 22 NGVASLQIQEVFPEDEGVYVCTATNS 47
SL I + D G Y C +N
Sbjct: 76 KNDFSLTISNLRLSDSGTYTCAVSNP 101
>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 = 28.8 bits (64), Expect = 0.076
Identities = 11/26 (42%), Positives = 19/26 (73%)
Query: 24 VASLQIQEVFPEDEGVYVCTATNSLG 49
V+SL ++ + D G Y+CTA+N++G
Sbjct: 62 VSSLTLKYIQYTDAGEYLCTASNTIG 87
>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 = 28.2 bits (63), Expect = 0.078
Identities = 17/58 (29%), Positives = 23/58 (39%)
Query: 2 KHDNSTIPLNSSNILDLKYKNGVASLQIQEVFPEDEGVYVCTATNSLGTAETKCKLTV 59
K +N + N+ I + G L IQ ED G Y +A N G +L V
Sbjct: 18 KKNNEMLTYNTDRISLYQDNCGRICLLIQNANKEDAGWYTVSAVNEAGVVSCNARLDV 75
>gnl|CDD|143212 cd05735, Ig8_DSCAM, Eight immunoglobulin (Ig) domain of Down
Syndrome Cell Adhesion molecule (DSCAM). Ig8_DSCAM:
the eight immunoglobulin (Ig) 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 = 88
Score = 28.5 bits (63), Expect = 0.078
Identities = 14/37 (37%), Positives = 20/37 (54%)
Query: 24 VASLQIQEVFPEDEGVYVCTATNSLGTAETKCKLTVR 60
+++LQI ED G + C A NS G +LTV+
Sbjct: 46 ISTLQILPTVREDSGFFSCHAINSYGEDRGIIQLTVQ 82
>gnl|CDD|143307 cd05899, IgV_TCR_beta, Immunoglobulin (Ig) variable (V) domain of
T-cell receptor (TCR) bet a chain. IgV_TCR_beta:
immunoglobulin (Ig) variable domain of the beta 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 includes the variable domain of the alpha chain of
alpha/beta 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 = 110
Score = 28.4 bits (64), Expect = 0.099
Identities = 15/40 (37%), Positives = 20/40 (50%), Gaps = 8/40 (20%)
Query: 26 SLQIQEVFPEDEGVYVCTATNSLGTAE------TKCKLTV 59
SL I+ PED VY+C ++ G E T +LTV
Sbjct: 73 SLTIKSAEPEDSAVYLCASSLGGGADEAYFGPGT--RLTV 110
>gnl|CDD|143251 cd05774, Ig_CEACAM_D1, First immunoglobulin (Ig)-like domain of
carcinoembryonic antigen (CEA) related cell adhesion
molecule (CEACAM). IG_CEACAM_D1: immunoglobulin
(Ig)-like domain 1 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 D1 Ig-like domain.
Length = 105
Score = 28.4 bits (64), Expect = 0.10
Identities = 11/21 (52%), Positives = 12/21 (57%), Gaps = 2/21 (9%)
Query: 20 YKNGVASLQIQEVFPEDEGVY 40
Y NG SL IQ V +D G Y
Sbjct: 67 YPNG--SLLIQNVTQKDTGFY 85
>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 = 28.1 bits (62), Expect = 0.10
Identities = 14/34 (41%), Positives = 19/34 (55%)
Query: 26 SLQIQEVFPEDEGVYVCTATNSLGTAETKCKLTV 59
SL+I + DEG Y C A N+ G A + L+V
Sbjct: 40 SLEILNITKLDEGSYTCFAENNRGKANSTGVLSV 73
>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 = 28.1 bits (62), Expect = 0.11
Identities = 14/36 (38%), Positives = 21/36 (58%)
Query: 25 ASLQIQEVFPEDEGVYVCTATNSLGTAETKCKLTVR 60
A L+I + PEDEG Y C A N G + + ++ V+
Sbjct: 53 AVLKIFNIQPEDEGTYECEAENIKGKDKHQARVYVQ 88
>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 = 27.9 bits (62), Expect = 0.11
Identities = 15/48 (31%), Positives = 20/48 (41%), Gaps = 3/48 (6%)
Query: 10 LNSSN-ILDLKYKNGVAS--LQIQEVFPEDEGVYVCTATNSLGTAETK 54
LN N ++K +N + LQI + D G Y C N LG
Sbjct: 25 LNRKNKPRNIKIRNKKKNSELQINKAKLADSGEYTCVVENILGNDTVT 72
>gnl|CDD|143190 cd05713, Ig_MOG_like, Immunoglobulin (Ig)-like domain of myelin
oligodendrocyte glycoprotein (MOG). Ig_MOG_like:
immunoglobulin (Ig)-like domain of myelin
oligodendrocyte glycoprotein (MOG). MOG, a minor
component of the myelin sheath, is an important
CNS-specific autoantigen, linked to the pathogenesis of
multiple sclerosis (MS) and experimental autoimmune
encephalomyelitis (EAE). It is a transmembrane protein
having an extracellular Ig domain. MOG is expressed in
the CNS on the outermost lamellae of the myelin sheath,
and on the surface of oligodendrocytes, and may
participate in the completion, compaction, and/or
maintenance of myelin. This group also includes
butyrophilin (BTN). BTN is the most abundant protein in
bovine milk-fat globule membrane (MFGM).
Length = 100
Score = 27.9 bits (63), Expect = 0.13
Identities = 9/21 (42%), Positives = 12/21 (57%)
Query: 22 NGVASLQIQEVFPEDEGVYVC 42
G +L+I V DEG+Y C
Sbjct: 62 EGSVALRIHNVRASDEGLYTC 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 = 27.6 bits (61), Expect = 0.13
Identities = 17/58 (29%), Positives = 27/58 (46%)
Query: 2 KHDNSTIPLNSSNILDLKYKNGVASLQIQEVFPEDEGVYVCTATNSLGTAETKCKLTV 59
K +N + N+ I + +G +L I+ V +D G Y +A N G A +L V
Sbjct: 18 KRNNEMVQYNTDRISLYQDNSGRVTLLIKNVNKKDAGWYTVSAVNEAGVATCHARLDV 75
>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 = 28.0 bits (62), Expect = 0.14
Identities = 14/33 (42%), Positives = 18/33 (54%)
Query: 27 LQIQEVFPEDEGVYVCTATNSLGTAETKCKLTV 59
L ++ V ED G Y C A NS+G + LTV
Sbjct: 57 LYLRNVTFEDAGEYTCLAGNSIGISHHSAWLTV 89
>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 = 28.0 bits (62), Expect = 0.15
Identities = 12/33 (36%), Positives = 15/33 (45%)
Query: 27 LQIQEVFPEDEGVYVCTATNSLGTAETKCKLTV 59
+ I +V DE Y C A N G E + L V
Sbjct: 60 MTILDVDKLDEAEYTCIAENKAGEQEAEIHLKV 92
>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 = 27.6 bits (61), Expect = 0.15
Identities = 11/34 (32%), Positives = 18/34 (52%)
Query: 26 SLQIQEVFPEDEGVYVCTATNSLGTAETKCKLTV 59
+LQ+ + DEG Y C A N +G + +L +
Sbjct: 38 NLQVLGLVKSDEGFYQCIAENDVGNVQAGAQLII 71
>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 = 27.6 bits (61), Expect = 0.18
Identities = 17/51 (33%), Positives = 25/51 (49%), Gaps = 4/51 (7%)
Query: 9 PLNSSNILDLKYKNGVASLQIQEVFPEDEGVYVCTATNSLGTAETKCKLTV 59
PL S N ++ + G L+I ++ D G+Y C A N GT +L V
Sbjct: 39 PLASEN--RIEVEAG--DLRITKLSLSDSGMYQCVAENKHGTIYASAELAV 85
>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 = 27.5 bits (61), Expect = 0.21
Identities = 12/32 (37%), Positives = 17/32 (53%)
Query: 19 KYKNGVASLQIQEVFPEDEGVYVCTATNSLGT 50
K +N SL ++ V P D+G Y C N G+
Sbjct: 45 KVRNQHWSLIMESVVPSDKGNYTCVVENEYGS 76
>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 = 27.4 bits (61), Expect = 0.22
Identities = 13/33 (39%), Positives = 18/33 (54%)
Query: 27 LQIQEVFPEDEGVYVCTATNSLGTAETKCKLTV 59
L ++ V +D G Y C A NS+G + LTV
Sbjct: 57 LYLRNVSFDDAGEYTCLAGNSIGPSHHSAWLTV 89
>gnl|CDD|222457 pfam13927, Ig_3, Immunoglobulin domain. This family contains
immunoglobulin-like domains.
Length = 74
Score = 27.0 bits (59), Expect = 0.25
Identities = 9/26 (34%), Positives = 14/26 (53%)
Query: 21 KNGVASLQIQEVFPEDEGVYVCTATN 46
+ ++L + V ED G Y C A+N
Sbjct: 49 GSSGSTLTLSSVTSEDSGTYTCVASN 74
>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 = 26.8 bits (59), Expect = 0.32
Identities = 10/15 (66%), Positives = 10/15 (66%)
Query: 37 EGVYVCTATNSLGTA 51
EGVY CTA N G A
Sbjct: 55 EGVYQCTARNERGAA 69
>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 = 26.6 bits (58), Expect = 0.35
Identities = 16/58 (27%), Positives = 24/58 (41%)
Query: 2 KHDNSTIPLNSSNILDLKYKNGVASLQIQEVFPEDEGVYVCTATNSLGTAETKCKLTV 59
K +N ++ N+ + + G L IQ ED G Y +A N G +L V
Sbjct: 18 KKENESLTHNTDRVSMHQDNCGYICLLIQGATKEDAGWYTVSAKNEAGIVSCTARLDV 75
>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 = 26.5 bits (58), Expect = 0.41
Identities = 13/19 (68%), Positives = 14/19 (73%), Gaps = 1/19 (5%)
Query: 34 PED-EGVYVCTATNSLGTA 51
PED EG Y C A N+LGTA
Sbjct: 51 PEDYEGEYQCFARNNLGTA 69
>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 = 26.4 bits (58), Expect = 0.44
Identities = 9/26 (34%), Positives = 16/26 (61%)
Query: 26 SLQIQEVFPEDEGVYVCTATNSLGTA 51
+L ++ P+D G+Y C A N+ G+
Sbjct: 39 TLTLRSAGPDDSGLYYCCAHNAFGSV 64
>gnl|CDD|143218 cd05741, Ig_CEACAM_D1_like, First immunoglobulin (Ig)-like domain
of carcinoembryonic antigen (CEA) related cell adhesion
molecule (CEACAM) and similar proteins.
Ig_CEACAM_D1_like : immunoglobulin (IG)-like domain 1
in carcinoembryonic antigen (CEA) related cell adhesion
molecule (CEACAM) protein subfamily-like. 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 D1 Ig-like domain. Also belonging to this group is
the N-terminal immunoglobulin (Ig)-like domain of the
signaling lymphocyte activation molecule (SLAM) family,
CD84-like family. The SLAM family is a group of
immune-cell specific receptors that can regulate both
adaptive and innate immune responses. SLAM family
proteins are organized as an extracellular domain with
having two or four Ig-like domains, a single
transmembrane segment, and a cytoplasmic region having
tyr-based motifs. The extracellular domain is organized
as a membrane-distal Ig variable (IgV) domain that is
responsible for ligand recognition and a
membrane-proximal truncated Ig constant-2 (IgC2)
domain.
Length = 92
Score = 26.5 bits (59), Expect = 0.52
Identities = 11/21 (52%), Positives = 12/21 (57%), Gaps = 2/21 (9%)
Query: 20 YKNGVASLQIQEVFPEDEGVY 40
Y NG SL IQ + ED G Y
Sbjct: 54 YPNG--SLLIQNLTKEDSGTY 72
>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 = 26.5 bits (58), Expect = 0.55
Identities = 13/33 (39%), Positives = 15/33 (45%)
Query: 27 LQIQEVFPEDEGVYVCTATNSLGTAETKCKLTV 59
L I V D G Y+C N G+ TK L V
Sbjct: 49 LTITNVQRSDVGYYICQTLNVAGSILTKAYLEV 81
>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 = 26.3 bits (58), Expect = 0.56
Identities = 8/15 (53%), Positives = 10/15 (66%)
Query: 36 DEGVYVCTATNSLGT 50
D G Y C A+N +GT
Sbjct: 70 DAGRYQCLASNIVGT 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 = 26.2 bits (58), Expect = 0.58
Identities = 11/34 (32%), Positives = 16/34 (47%)
Query: 26 SLQIQEVFPEDEGVYVCTATNSLGTAETKCKLTV 59
+L ++ V P D G Y C N G+ K+ V
Sbjct: 52 TLILESVVPSDSGKYTCIVENKYGSINHTYKVDV 85
>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 = 26.4 bits (59), Expect = 0.62
Identities = 10/25 (40%), Positives = 11/25 (44%)
Query: 26 SLQIQEVFPEDEGVYVCTATNSLGT 50
SL I D VY C + S GT
Sbjct: 71 SLHISAAQLSDSAVYFCALSESGGT 95
>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 = 25.9 bits (57), Expect = 0.74
Identities = 17/41 (41%), Positives = 19/41 (46%), Gaps = 7/41 (17%)
Query: 26 SLQIQEVF-----PEDEGVYVCTATN-SLGT-AETKCKLTV 59
SL I V DEG Y C A N SLG+ +LTV
Sbjct: 55 SLLITSVVHSKHNKPDEGFYQCVAQNDSLGSIVSRTARLTV 95
>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 = 25.7 bits (56), Expect = 0.76
Identities = 14/48 (29%), Positives = 19/48 (39%), Gaps = 8/48 (16%)
Query: 20 YKNGVA--------SLQIQEVFPEDEGVYVCTATNSLGTAETKCKLTV 59
YK+G SLQI++V G Y NS E + L +
Sbjct: 18 YKDGKLISGKHSQHSLQIKDVTEASAGTYTLVLWNSAAGLEKRISLEL 65
>gnl|CDD|143192 cd05715, Ig_P0-like, Immunoglobulin (Ig)-like domain of Protein
zero (P0) and similar proteins. Ig_P0ex-like: domain
similar to the immunoglobulin (Ig) domain of Protein
zero (P0). P0 accounts for over 50% of the total protein
in peripheral nervous system (PNS) myelin. P0 is a
single-pass transmembrane glycoprotein with a highly
basic intracellular domain and an extracellular Ig
domain. The extracellular domain of P0 (P0-ED) is
similar to the Ig variable domain, carrying one acceptor
sequence for N-linked glycosylation. P0 plays a role in
membrane adhesion in the spiral wraps of the myelin
sheath. The intracellular domain is thought to mediate
membrane apposition of the cytoplasmic faces and may,
through electrostatic interactions, interact directly
with lipid headgroups. It is thought that homophilic
interactions of the P0 extracellular domain mediate
membrane juxtaposition in the extracellular space of PNS
myelin. This group also contains the Ig domain of Sodium
channel subunit beta-2 (SCN2B), and of epithelial V-like
antigen 1 (EVA). EVA, also known as myelin protein
zero-like 2, is an adhesion molecule, which may play a
role in structural organization of the thymus and early
lymphocyte development. SCN2B subunits play a role in
determining sodium channel density and function in
neurons,and in control of electrical excitability in
the brain.
Length = 116
Score = 26.1 bits (58), Expect = 0.87
Identities = 8/22 (36%), Positives = 10/22 (45%)
Query: 25 ASLQIQEVFPEDEGVYVCTATN 46
AS+ I + D G Y C N
Sbjct: 80 ASIVIHNLQFTDNGTYTCDVKN 101
>gnl|CDD|143193 cd05716, Ig_pIgR, Immunoglobulin (Ig)-like domain in the
polymeric Ig receptor (pIgR). Ig_pIgR: Immunoglobulin
(Ig)-like domain in the polymeric Ig receptor (pIgR).
pIgR delivers dimeric IgA and pentameric IgM to mucosal
secretions. Polymeric immunoglobulin (pIgs) are the
first defense against pathogens and toxins. IgA and IgM
can form polymers via an 18-residue extension at their
c-termini referred to as the tailpiece. pIgR transports
pIgs across mucosal epithelia into mucosal secretions.
Human pIgR is a glycosylated type I transmembrane
protein, comprised of a 620 residue extracellular
region, a 23 residue transmembrane region, and a 103
residue cytoplasmic tail. The extracellular region
contains five domains that share sequence similarity
with Ig variable (v) regions.
Length = 98
Score = 25.9 bits (57), Expect = 0.90
Identities = 9/34 (26%), Positives = 15/34 (44%)
Query: 21 KNGVASLQIQEVFPEDEGVYVCTATNSLGTAETK 54
NGV ++ + ++ ED G Y C + T
Sbjct: 60 DNGVFTVTLNQLRKEDAGWYWCGVGDDGDQGLTL 93
>gnl|CDD|206066 pfam13895, Ig_2, Immunoglobulin domain. This domain contains
immunoglobulin-like domains.
Length = 80
Score = 25.5 bits (56), Expect = 0.90
Identities = 17/47 (36%), Positives = 19/47 (40%), Gaps = 7/47 (14%)
Query: 20 YKNGVASLQIQEVF------PEDEGVYVCTATNS-LGTAETKCKLTV 59
YK+GV Q F ED G Y C A+N G LTV
Sbjct: 34 YKDGVPLSSSQNGFFTPNVSAEDSGTYTCVASNGGGGKTSNPVTLTV 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 = 25.2 bits (55), Expect = 1.1
Identities = 9/20 (45%), Positives = 10/20 (50%)
Query: 25 ASLQIQEVFPEDEGVYVCTA 44
+L I V PED G Y C
Sbjct: 43 ITLTISNVTPEDSGTYTCVV 62
>gnl|CDD|143248 cd05771, IgC_Tapasin_R, Tapasin-R immunoglobulin-like domain.
IgC_Tapasin_R: Immunoglobulin-like domain on Tapasin-R.
Tapasin is a V-C1 (variable-constant) immunoglobulin
superfamily molecule present in the endoplasmic
reticulum (ER), where it links MHC class I molecules to
the transporter associated with antigen processing
(TAP). Tapasin-R is a tapasin-related protein that
contains similar structural motifs to Tapasin, with
some marked differences, especially in the V domain,
transmembrane and cytoplasmic regions. The majority of
Tapasin-R is located within the ER; however, there may
be some expression of Tapasin-R at the cell surface.
Tapasin-R lacks an obvious ER retention signal.
Length = 139
Score = 26.0 bits (57), Expect = 1.2
Identities = 11/35 (31%), Positives = 19/35 (54%)
Query: 25 ASLQIQEVFPEDEGVYVCTATNSLGTAETKCKLTV 59
ASL + + DEG Y+C+ + A+ +L+V
Sbjct: 1 ASLTLPGLTVHDEGTYICSVSTPPHQAQQIIQLSV 35
>gnl|CDD|143294 cd05886, Ig1_Nectin-1_like, First immunoglobulin (Ig) domain of
nectin-1 (also known as poliovirus receptor related
protein 1, or as CD111) and similar proteins.
Ig1_Nectin-1_like: domain similar to the first
immunoglobulin (Ig) domain of nectin-1 (also known as
poliovirus receptor related protein 1, or as CD111).
Nectin-1 belongs 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. In
addition nectins heterophilically trans-interact with
other CAMs such as nectin-like molecules (Necls),
nectin-1 for example, has been shown to trans-interact
with Necl-1. Nectins also interact with various other
proteins, including the actin filament
(F-actin)-binding protein, afadin. Mutation in the
human nectin-1 gene is associated with cleft lip/palate
ectodermal dysplasia syndrome (CLPED1). Nectin-1 is a
major receptor for herpes simplex virus through
interaction with the viral envelope glycoprotein D.
Length = 99
Score = 25.3 bits (55), Expect = 1.3
Identities = 14/26 (53%), Positives = 17/26 (65%), Gaps = 1/26 (3%)
Query: 35 EDEGVYVCT-ATNSLGTAETKCKLTV 59
EDEGVY+C AT G E++ LTV
Sbjct: 73 EDEGVYICEFATFPTGNRESQLNLTV 98
>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 = 25.3 bits (55), Expect = 1.4
Identities = 16/38 (42%), Positives = 17/38 (44%), Gaps = 1/38 (2%)
Query: 22 NGVASLQIQEVFPEDEGVYVCTATNSLGTAETKCKLTV 59
NG + L I V ED G Y C A N G E L V
Sbjct: 37 NG-SELHISNVRYEDTGAYTCIAKNEAGVDEDISSLFV 73
>gnl|CDD|143288 cd05880, Ig_EVA1, Immunoglobulin (Ig)-like domain of epithelial
V-like antigen 1 (EVA). Ig_EVA: immunoglobulin (Ig)
domain of epithelial V-like antigen 1 (EVA). EVA is also
known as myelin protein zero-like 2. EVA is an adhesion
molecule, which may play a role in structural
organization of the thymus and early lymphocyte
development.
Length = 115
Score = 25.6 bits (56), Expect = 1.5
Identities = 9/22 (40%), Positives = 12/22 (54%)
Query: 25 ASLQIQEVFPEDEGVYVCTATN 46
AS+ I ++ P D G Y C N
Sbjct: 79 ASILIWQLQPTDNGTYTCQVKN 100
>gnl|CDD|143303 cd05895, Ig_Pro_neuregulin-1, Immunoglobulin (Ig)-like domain
found in neuregulin (NRG)-1. Ig_Pro_neuregulin-1:
immunoglobulin (Ig)-like domain found in neuregulin
(NRG)-1. There are many NRG-1 isoforms which arise from
the alternative splicing of mRNA. NRG-1 belongs to the
neuregulin gene family, which is comprised of four
genes. This group represents NRG-1. NRGs are signaling
molecules, which participate in cell-cell interactions
in the nervous system, breast, and heart, and other
organ systems, and are implicated in the pathology of
diseases including schizophrenia, multiple sclerosis,
and breast cancer. The NRG-1 protein binds to and
activates the tyrosine kinases receptors ErbB3 and
ErbB4, initiating signaling cascades. 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.
Length = 76
Score = 25.0 bits (54), Expect = 1.6
Identities = 11/41 (26%), Positives = 18/41 (43%)
Query: 14 NILDLKYKNGVASLQIQEVFPEDEGVYVCTATNSLGTAETK 54
N + ++ K + LQI + D G Y C ++ LG
Sbjct: 33 NKIKIRKKKKSSELQISKASLADNGEYKCMVSSKLGNDSVT 73
>gnl|CDD|143324 cd07700, IgV_CD8_beta, Immunoglobulin (Ig) like domain of CD8
beta chain. IgV_CD8_beta: immunoglobulin (Ig)-like
domain in CD8 beta. The CD8 glycoprotein plays an
essential role in the control of T-cell selection,
maturation and the T-cell receptor (TCR)-mediated
response to peptide antigen. CD8 is comprised of alpha
and beta subunits and is expressed as either an
alpha/alpha or alpha/beta dimer. Both dimeric isoforms
can serve as a coreceptor for T cell activation and
differentiation, however they have distinct
physiological roles, different cellular distributions,
unique binding partners etc. Each CD8 subunit is
comprised of an extracellular domain containing a
V-type Ig-like domain, a single pass transmembrane
portion and a short intracellular domain.
Length = 107
Score = 25.2 bits (55), Expect = 1.7
Identities = 10/21 (47%), Positives = 10/21 (47%)
Query: 27 LQIQEVFPEDEGVYVCTATNS 47
L I V PED G Y C S
Sbjct: 74 LHINRVKPEDSGTYFCMTVGS 94
>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 = 24.8 bits (54), Expect = 1.8
Identities = 13/26 (50%), Positives = 15/26 (57%), Gaps = 2/26 (7%)
Query: 35 EDEGVYVCTATNSLGTAETKCKLTVR 60
EDEGVY T TN +G E L V+
Sbjct: 62 EDEGVYTITVTNPVG--EDHASLFVK 85
>gnl|CDD|143182 cd04981, IgV_H, Immunoglobulin (Ig) heavy chain (H), variable (V)
domain. IgV_H: Immunoglobulin (Ig) heavy chain (H),
variable (V) domain. 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. There are
five types of heavy chains (alpha, gamma, delta,
epsilon, and mu), which determine the type of
immunoglobulin: IgA, IgG, IgD, IgE, and IgM,
respectively. In higher vertebrates, there are two
types of light chain, designated kappa and lambda,
which can associate with any of the heavy chains. This
family includes alpha, gamma, delta, epsilon, and mu
heavy chains.
Length = 117
Score = 25.0 bits (55), Expect = 1.8
Identities = 8/22 (36%), Positives = 10/22 (45%)
Query: 25 ASLQIQEVFPEDEGVYVCTATN 46
LQ+ + PED VY C
Sbjct: 76 VYLQLNSLTPEDTAVYYCARGL 97
>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 = 24.4 bits (53), Expect = 2.2
Identities = 13/40 (32%), Positives = 20/40 (50%), Gaps = 2/40 (5%)
Query: 20 YKNGVASLQIQEVFPEDEGVYVCTATNSLGTAETKCKLTV 59
Y NG +L I +D G + C A+N+ G A +L +
Sbjct: 37 YDNG--TLDILITTVKDTGSFTCIASNAAGEATATVELHI 74
>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 = 24.9 bits (54), Expect = 2.4
Identities = 9/23 (39%), Positives = 12/23 (52%)
Query: 35 EDEGVYVCTATNSLGTAETKCKL 57
D ++ CTA NSLG +L
Sbjct: 80 LDYALFTCTAHNSLGEDSLDIQL 102
>gnl|CDD|143270 cd05862, Ig1_VEGFR, First immunoglobulin (Ig)-like domain of
vascular endothelial growth factor (VEGF) receptor(R).
IG1_VEGFR: first immunoglobulin (Ig)-like domain of
vascular endothelial growth factor (VEGF) receptor(R).
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). VEGF_A interacts with both VEGFR-1 and
VEGFR-2. VEGFR-1 binds strongest to VEGF, VEGF-2 binds
more weakly. VEGFR-3 appears not to bind VEGF, but
binds other members of the VEGF family (VEGF-C and -D).
VEGFRs bind VEGFs with high affinity with 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 = 86
Score = 24.4 bits (53), Expect = 2.5
Identities = 10/29 (34%), Positives = 16/29 (55%)
Query: 24 VASLQIQEVFPEDEGVYVCTATNSLGTAE 52
++L I+ V D G Y CTA++ A+
Sbjct: 49 SSTLTIENVTLSDLGRYTCTASSGQMIAK 77
>gnl|CDD|165173 PHA02826, PHA02826, IL-1 receptor-like protein; Provisional.
Length = 227
Score = 24.9 bits (54), Expect = 2.5
Identities = 12/35 (34%), Positives = 19/35 (54%)
Query: 26 SLQIQEVFPEDEGVYVCTATNSLGTAETKCKLTVR 60
+L I V DEG+Y+CT ++ E+ +LT
Sbjct: 99 NLWIGNVINIDEGIYICTISSGNICEESTIRLTFD 133
>gnl|CDD|143191 cd05714, Ig_CSPGs_LP, Immunoglobulin (Ig)-like domain of
chondroitin sulfate proteoglycans (CSPGs), human
cartilage link protein (LP) and similar proteins.
Ig_CSPGs_LP: immunoglobulin (Ig)-like domain similar to
that found in chondroitin sulfate proteoglycans (CSPGs)
and human cartilage link protein (LP). Included in
this group are the CSPGs aggrecan, versican, and
neurocan. In CSPGs this Ig-like domain is followed by
hyaluronan (HA)-binding tandem repeats, and a
C-terminal region with epidermal growth factor-like,
lectin-like, and complement regulatory protein-like
domains. Separating these N- and C-terminal regions is
a nonhomologous glycosaminoglycan attachment region. In
cartilage, aggrecan forms cartilage link protein
stabilized aggregates with hyaluronan (HA). These
aggregates contribute to the tissue's load bearing
properties. Aggrecan and versican have a wide
distribution in connective tissue and extracellular
matrices. Neurocan is localized almost exclusively in
nervous tissue. Aggregates having other CSPGs
substituting for aggrecan may contribute to the
structural integrity of many different tissues. There
is considerable evidence that HA-binding CSPGs are
involved in developmental processes in the central
nervous system. Members of the vertebrate HPLN
(hyaluronan/HA and proteoglycan binding link) protein
family are physically linked adjacent to CSPG genes.
Length = 106
Score = 24.5 bits (54), Expect = 2.5
Identities = 12/36 (33%), Positives = 17/36 (47%), Gaps = 7/36 (19%)
Query: 7 TIPLNSSNILDLKYKNGVASLQIQEVFPEDEGVYVC 42
+PL ++ D ASL I ++ ED G Y C
Sbjct: 57 RVPLYPADPGD-------ASLVITDLRLEDSGRYRC 85
>gnl|CDD|214353 CHL00073, chlN, photochlorophyllide reductase subunit N.
Length = 457
Score = 24.9 bits (55), Expect = 2.9
Identities = 14/28 (50%), Positives = 14/28 (50%), Gaps = 6/28 (21%)
Query: 36 DEGVYVCTATNSLG-TAET-----KCKL 57
EGVYVC L TA T KCKL
Sbjct: 237 GEGVYVCGVNPFLSRTATTLMRRRKCKL 264
>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 = 23.9 bits (52), Expect = 3.5
Identities = 10/26 (38%), Positives = 13/26 (50%)
Query: 26 SLQIQEVFPEDEGVYVCTATNSLGTA 51
+L + V P D VY C A+N G
Sbjct: 42 TLILSNVQPNDTAVYQCNASNVHGYL 67
>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 = 23.9 bits (52), Expect = 4.1
Identities = 14/41 (34%), Positives = 16/41 (39%), Gaps = 12/41 (29%)
Query: 20 YKNGVA------------SLQIQEVFPEDEGVYVCTATNSL 48
YKNG SL I++V ED G Y TN
Sbjct: 18 YKNGKLISEKNRTKKSGHSLTIKDVTEEDAGNYTVVLTNKQ 58
>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 = 23.9 bits (52), Expect = 4.6
Identities = 11/37 (29%), Positives = 15/37 (40%)
Query: 9 PLNSSNILDLKYKNGVASLQIQEVFPEDEGVYVCTAT 45
PL + + L I+ V P D GVY C +
Sbjct: 35 PLQRKEEPEERLLVTEDGLLIRSVSPADAGVYTCQSV 71
>gnl|CDD|143219 cd05742, Ig1_VEGFR_like, First immunoglobulin (Ig)-like domain of
vascular endothelial growth factor (VEGF) receptor (R)
and similar proteins. Ig1_VEGFR_like: first
immunoglobulin (Ig)-like domain of vascular endothelial
growth factor (VEGF) receptor(R) related proteins. 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). VEGF-A interacts with both VEGFR-1 and
VEGFR-2. VEGFR-1 binds strongest to VEGF, VEGF-2 binds
more weakly. VEGFR-3 appears not to bind VEGF, but
binds other members of the VEGF family (VEGF-C and -D).
VEGFRs bind VEGFs with high affinity with 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. This group
also contains alpha-type platelet-derived growth factor
receptor precursor (PDGFR)-alpha (CD140a), and
PDGFR-beta (CD140b). PDGFRs alpha and beta have an
extracellular component with five Ig-like domains, a
transmembrane segment, and a cytoplasmic portion that
has protein tyrosine kinase activity.
Length = 84
Score = 23.5 bits (51), Expect = 5.9
Identities = 7/29 (24%), Positives = 13/29 (44%)
Query: 24 VASLQIQEVFPEDEGVYVCTATNSLGTAE 52
++L I +D G Y C A++ +
Sbjct: 48 SSTLTIPNATLKDSGTYTCAASSGTMDQK 76
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
0.312 0.128 0.359
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: 2,629,278
Number of extensions: 164310
Number of successful extensions: 212
Number of sequences better than 10.0: 1
Number of HSP's gapped: 212
Number of HSP's successfully gapped: 79
Length of query: 60
Length of database: 10,937,602
Length adjustment: 31
Effective length of query: 29
Effective length of database: 9,562,628
Effective search space: 277316212
Effective search space used: 277316212
Neighboring words threshold: 11
Window for multiple hits: 40
X1: 16 ( 7.2 bits)
X2: 38 (14.6 bits)
X3: 64 (24.7 bits)
S1: 42 (21.9 bits)
S2: 53 (24.4 bits)