RPS-BLAST 2.2.26 [Sep-21-2011]
Database: CDD.v3.10
44,354 sequences; 10,937,602 total letters
Searching..................................................done
Query= psy8425
(176 letters)
>gnl|CDD|191810 pfam07679, I-set, Immunoglobulin I-set domain.
Length = 90
Score = 76.9 bits (190), Expect = 5e-19
Identities = 24/70 (34%), Positives = 40/70 (57%)
Query: 17 LRNVSVKLRQSLRLVCRCKGNPLPAVSWFKDNVEITTNKRLKIQFKKKRSTLIITRIRSE 76
++V V+ +S R C G+P P VSWFKD + ++ R K+ ++ TL I+ ++ +
Sbjct: 7 PKDVEVQEGESARFTCTVTGDPDPTVSWFKDGQPLRSSDRFKVTYEGGTYTLTISNVQPD 66
Query: 77 DAGRYECRGT 86
D G+Y C T
Sbjct: 67 DEGKYTCVAT 76
>gnl|CDD|214653 smart00410, IG_like, Immunoglobulin like. IG domains that cannot
be classified into one of IGv1, IGc1, IGc2, IG.
Length = 85
Score = 64.4 bits (157), Expect = 2e-14
Identities = 24/85 (28%), Positives = 42/85 (49%), Gaps = 2/85 (2%)
Query: 18 RNVSVKLRQSLRLVCRCKGNPLPAVSWFKDNVE-ITTNKRLKIQFKKKRSTLIITRIRSE 76
+V+VK +S+ L C G+P P V+W+K + + + R + STL I+ + E
Sbjct: 2 PSVTVKEGESVTLSCEASGSPPPEVTWYKQGGKLLAESGRFSVSRSGSTSTLTISNVTPE 61
Query: 77 DAGRYECRGTGVHKDVVSAFAEVSI 101
D+G Y C T S+ +++
Sbjct: 62 DSGTYTCAATNSSGS-ASSGTTLTV 85
>gnl|CDD|214652 smart00409, IG, Immunoglobulin.
Length = 85
Score = 64.4 bits (157), Expect = 2e-14
Identities = 24/85 (28%), Positives = 42/85 (49%), Gaps = 2/85 (2%)
Query: 18 RNVSVKLRQSLRLVCRCKGNPLPAVSWFKDNVE-ITTNKRLKIQFKKKRSTLIITRIRSE 76
+V+VK +S+ L C G+P P V+W+K + + + R + STL I+ + E
Sbjct: 2 PSVTVKEGESVTLSCEASGSPPPEVTWYKQGGKLLAESGRFSVSRSGSTSTLTISNVTPE 61
Query: 77 DAGRYECRGTGVHKDVVSAFAEVSI 101
D+G Y C T S+ +++
Sbjct: 62 DSGTYTCAATNSSGS-ASSGTTLTV 85
>gnl|CDD|197706 smart00408, IGc2, Immunoglobulin C-2 Type.
Length = 63
Score = 57.0 bits (138), Expect = 9e-12
Identities = 22/64 (34%), Positives = 31/64 (48%), Gaps = 4/64 (6%)
Query: 26 QSLRLVCRCKGNPLPAVSWFKDNVEITTNKRLKIQFKKKRSTLIITRIRSEDAGRYECRG 85
QS+ L C +GNP+P ++W KD + + R F STL I + ED+G Y C
Sbjct: 3 QSVTLTCPAEGNPVPNITWLKDGKPLPESNR----FVASGSTLTIKSVSLEDSGLYTCVA 58
Query: 86 TGVH 89
Sbjct: 59 ENSA 62
>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 = 53.6 bits (128), Expect = 3e-10
Identities = 17/61 (27%), Positives = 27/61 (44%), Gaps = 4/61 (6%)
Query: 28 LRLVCRCKGNPLPAVSWFKDNVEITTN----KRLKIQFKKKRSTLIITRIRSEDAGRYEC 83
+ L C G P P ++W K+ + ++ R STL I+ + ED+G Y C
Sbjct: 1 VTLTCLASGPPPPTITWLKNGKPLPSSVLTRVRSSRGTSSGSSTLTISNVTLEDSGTYTC 60
Query: 84 R 84
Sbjct: 61 V 61
>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 = 53.2 bits (128), Expect = 6e-10
Identities = 20/59 (33%), Positives = 32/59 (54%), Gaps = 1/59 (1%)
Query: 27 SLRLVCRCKGNPLPAVSWFKDNVEITTNKRLKI-QFKKKRSTLIITRIRSEDAGRYECR 84
++RL C GNP P ++W KD R+ + +KK+ TLI+ + D+G+Y C
Sbjct: 11 TVRLKCPASGNPRPTITWLKDGKPFKKEHRIGGYKVRKKKWTLILESVVPSDSGKYTCI 69
>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 = 49.5 bits (118), Expect = 1e-08
Identities = 26/74 (35%), Positives = 38/74 (51%), Gaps = 3/74 (4%)
Query: 30 LVCRCKGNPLPAVSWFKDNVEITTNKRLKIQFKKKRSTLIITRIRSEDAGRYECRGT--- 86
L C +G PLP ++W K+ ++IT ++ S L I+ +R ED G Y C
Sbjct: 3 LRCHAEGIPLPRLTWLKNGMDITPKLSKQLTLIANGSELHISNVRYEDTGAYTCIAKNEA 62
Query: 87 GVHKDVVSAFAEVS 100
GV +D+ S F E S
Sbjct: 63 GVDEDISSLFVEDS 76
>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 = 49.1 bits (118), Expect = 1e-08
Identities = 17/56 (30%), Positives = 29/56 (51%)
Query: 27 SLRLVCRCKGNPLPAVSWFKDNVEITTNKRLKIQFKKKRSTLIITRIRSEDAGRYE 82
S+RL G P P V+W KD + + R++I+ ++L+I D+G+Y
Sbjct: 1 SVRLEVPISGRPTPTVTWSKDGKPLKLSGRVQIETTASSTSLVIKNAERSDSGKYT 56
>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 = 49.1 bits (117), Expect = 2e-08
Identities = 21/61 (34%), Positives = 30/61 (49%), Gaps = 6/61 (9%)
Query: 30 LVCRCK---GNPLPAVSWFKDNVEITTNKR---LKIQFKKKRSTLIITRIRSEDAGRYEC 83
LV +C+ P WFKD E+ + +KI+ KKK S L I + + D+G Y C
Sbjct: 1 LVLKCEATSEYPSLRFKWFKDGKELNRKNKPRNIKIRNKKKNSELQINKAKLADSGEYTC 60
Query: 84 R 84
Sbjct: 61 V 61
>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 = 48.7 bits (116), Expect = 3e-08
Identities = 22/70 (31%), Positives = 41/70 (58%), Gaps = 2/70 (2%)
Query: 14 VSGLRNV-SVKLRQSLRLVCRCKGNPLPAVSWFKDNVEITTNKRLKIQFKK-KRSTLIIT 71
V GL +V ++ ++L L C G+P P VSW K++ + + ++ ++ K ++L I
Sbjct: 4 VGGLPDVVTIMEGKTLNLTCTVFGDPDPEVSWLKNDQALALSDHYNVKVEQGKYASLTIK 63
Query: 72 RIRSEDAGRY 81
+ SED+G+Y
Sbjct: 64 GVSSEDSGKY 73
>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 = 48.0 bits (114), Expect = 4e-08
Identities = 23/75 (30%), Positives = 39/75 (52%), Gaps = 5/75 (6%)
Query: 27 SLRLVCRCKGNPLPAVSWFKDNVEITTNKRLKIQFKKKRSTLIITRIRSEDAGRYECRGT 86
SLR C+ GNP PA W K+ + + R++++ L IT++ D+G Y+C
Sbjct: 16 SLRWECKASGNPRPAYRWLKNGQPLASENRIEVE----AGDLRITKLSLSDSGMYQCVAE 71
Query: 87 GVHKDVVSAFAEVSI 101
H + A AE+++
Sbjct: 72 NKHGTIY-ASAELAV 85
>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 = 47.0 bits (112), Expect = 1e-07
Identities = 23/68 (33%), Positives = 35/68 (51%), Gaps = 4/68 (5%)
Query: 35 KGNPLPAVSWFKDNVEIT-TNKRLKIQFKKKRSTLIITRIRSEDAGRYECRGTGVHKDVV 93
+G+P P VSW KD + N+R++I L+I R D G Y+C T + +
Sbjct: 22 RGHPEPTVSWRKDGQPLNLDNERVRI---VDDGNLLIAEARKSDEGTYKCVATNMVGERE 78
Query: 94 SAFAEVSI 101
SA A +S+
Sbjct: 79 SAAARLSV 86
>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 = 46.7 bits (111), Expect = 1e-07
Identities = 22/58 (37%), Positives = 35/58 (60%), Gaps = 2/58 (3%)
Query: 27 SLRLVCRCKGNPLPAVSWFKDNVEITTNKRLKIQFKKKRSTLIITRIRSEDAGRYECR 84
S+RL C GNP P ++W KDN +T + + +KK+ TL + ++ ED+G+Y C
Sbjct: 11 SVRLKCVASGNPRPDITWLKDNKPLTPTE--IGESRKKKWTLSLKNLKPEDSGKYTCH 66
>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 = 46.4 bits (110), Expect = 1e-07
Identities = 18/56 (32%), Positives = 30/56 (53%), Gaps = 3/56 (5%)
Query: 28 LRLVCRCKGNPLPAVSWFKDNVEITTNKRLKIQFKKKRSTLIITRIRSEDAGRYEC 83
+++ C +G+P P ++W KD V++T + + I L I + D GRYEC
Sbjct: 1 VQIPCSAQGDPEPTITWNKDGVQVTESGKFHIS---PEGYLAIRDVGVADQGRYEC 53
>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 = 46.8 bits (111), Expect = 2e-07
Identities = 20/65 (30%), Positives = 28/65 (43%), Gaps = 1/65 (1%)
Query: 19 NVSVKLRQSLRLVCRCKGNPLPAVSWFKDNVEITTNKRLKIQFKKKRSTLIITRIRSEDA 78
N + L QS+ L C G P P ++W KD I + K F + S + I + D
Sbjct: 12 NATANLGQSVTLACDADGFPEPTMTWTKDGEPI-ESGEEKYSFNEDGSEMTILDVDKLDE 70
Query: 79 GRYEC 83
Y C
Sbjct: 71 AEYTC 75
>gnl|CDD|206066 pfam13895, Ig_2, Immunoglobulin domain. This domain contains
immunoglobulin-like domains.
Length = 80
Score = 45.9 bits (109), Expect = 3e-07
Identities = 17/82 (20%), Positives = 31/82 (37%), Gaps = 10/82 (12%)
Query: 20 VSVKLRQSLRLVCRCKGNPLPAVSWFKDNVEITTNKRLKIQFKKKRSTLIITRIRSEDAG 79
V + + L C GNP P +W+KD V + ++ + +ED+G
Sbjct: 9 TVVFEGEDVTLTCSAPGNPPPNYTWYKDGVPL----------SSSQNGFFTPNVSAEDSG 58
Query: 80 RYECRGTGVHKDVVSAFAEVSI 101
Y C + S +++
Sbjct: 59 TYTCVASNGGGGKTSNPVTLTV 80
>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 = 45.7 bits (108), Expect = 4e-07
Identities = 23/70 (32%), Positives = 43/70 (61%), Gaps = 2/70 (2%)
Query: 14 VSGLRNV-SVKLRQSLRLVCRCKGNPLPAVSWFKDNVEITTNKRLKIQFKK-KRSTLIIT 71
+ GL +V ++ ++L L C GNP P V WFK++ +I ++ ++ ++ K ++L I
Sbjct: 4 IGGLPDVVTIMEGKTLNLTCTVFGNPDPEVIWFKNDQDIELSEHYSVKLEQGKYASLTIK 63
Query: 72 RIRSEDAGRY 81
+ SED+G+Y
Sbjct: 64 GVTSEDSGKY 73
>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 = 43.9 bits (103), Expect = 1e-06
Identities = 23/60 (38%), Positives = 33/60 (55%), Gaps = 7/60 (11%)
Query: 30 LVCRCKGNPLPAVSWFKD--NVEITTNKRLKIQFKKKRSTLIITRIRSE-DAGRYECRGT 86
++C GNP P ++WFKD V+ T+N R+ K+ RS + E D G+YEC T
Sbjct: 3 MLCAASGNPDPEITWFKDFLPVDTTSNGRI----KQLRSGALQIENSEESDQGKYECVAT 58
>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 = 43.9 bits (103), Expect = 2e-06
Identities = 19/64 (29%), Positives = 36/64 (56%)
Query: 18 RNVSVKLRQSLRLVCRCKGNPLPAVSWFKDNVEITTNKRLKIQFKKKRSTLIITRIRSED 77
R+++V +S R C G P P V+W ++ I +++R +I + +ST I++++ D
Sbjct: 11 RSLTVSEGESARFSCDVDGEPAPTVTWMREGQIIVSSQRHQITSTEYKSTFEISKVQMSD 70
Query: 78 AGRY 81
G Y
Sbjct: 71 EGNY 74
>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 = 42.1 bits (99), Expect = 7e-06
Identities = 24/74 (32%), Positives = 35/74 (47%), Gaps = 2/74 (2%)
Query: 28 LRLVCRCKGNPLPAVSWFKDNVEIT-TNKRLKIQFKKKRSTLIITRIRSEDAGRYECRGT 86
LRL G P P V+W + + T T R++++ K S+ +I ED G Y T
Sbjct: 13 LRLDVPISGEPAPTVTWSRGDKAFTETEGRVRVESYKDLSSFVIEGAEREDEGVYTITVT 72
Query: 87 G-VHKDVVSAFAEV 99
V +D S F +V
Sbjct: 73 NPVGEDHASLFVKV 86
>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 = 42.5 bits (100), Expect = 8e-06
Identities = 20/70 (28%), Positives = 30/70 (42%), Gaps = 8/70 (11%)
Query: 19 NVSVKLRQSLRLVCRCKGNPLPAVSWFKDNV-------EITTNKRLKIQFKKKRSTLIIT 71
L + V + P P + W KDN EITT++ +Q + S L +
Sbjct: 12 LEFANLHEVKEFVVEVEAYPPPQIRWLKDNRTLIENLTEITTSEH-NVQETRYVSKLKLI 70
Query: 72 RIRSEDAGRY 81
R + ED+G Y
Sbjct: 71 RAKEEDSGLY 80
>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 = 1e-05
Identities = 17/63 (26%), Positives = 34/63 (53%), Gaps = 3/63 (4%)
Query: 26 QSLRLVCRCKGNPLPAVSWFKDNVEITTNKRLKIQFKKKRSTLIITRIRSEDAGRYECRG 85
Q++ +C +G P P ++W K +++ ++R + TL I+R+ D G+YEC+
Sbjct: 3 QTVDFLCEAQGYPQPVIAWTKGGSQLSVDRRHLVL---SSGTLRISRVALHDQGQYECQA 59
Query: 86 TGV 88
+
Sbjct: 60 VNI 62
>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 = 40.5 bits (95), Expect = 2e-05
Identities = 18/64 (28%), Positives = 31/64 (48%), Gaps = 7/64 (10%)
Query: 29 RLVCRCKGNPLPAVSWFKDNVEI---TTNKRLKIQFKKKRSTLIITRIRSEDAGRYECRG 85
RL C +G P P ++W + V I + R ++ TLI++ ++ D Y+C
Sbjct: 5 RLDCEAEGIPQPTITWRLNGVPIEELPPDPRRRVD----GGTLILSNVQPNDTAVYQCNA 60
Query: 86 TGVH 89
+ VH
Sbjct: 61 SNVH 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 = 40.3 bits (94), Expect = 4e-05
Identities = 18/79 (22%), Positives = 41/79 (51%), Gaps = 9/79 (11%)
Query: 13 EVSGLRNVSVKLRQSLRLVCRCKGNPLPAVSW--------FKDNVEITTNKRLKIQFKKK 64
+ L+N + + L C+ +G P+P ++W F + + + + R++++ +
Sbjct: 4 HIIQLKNETTVENGAATLSCKAEGEPIPEITWKRASDGHTFSEG-DKSPDGRIEVKGQHG 62
Query: 65 RSTLIITRIRSEDAGRYEC 83
S+L I ++ D+GRY+C
Sbjct: 63 ESSLHIKDVKLSDSGRYDC 81
>gnl|CDD|238011 cd00054, EGF_CA, Calcium-binding EGF-like domain, present in a
large number of membrane-bound and extracellular (mostly
animal) proteins. Many of these proteins require calcium
for their biological function and calcium-binding sites
have been found to be located at the N-terminus of
particular EGF-like domains; calcium-binding may be
crucial for numerous protein-protein interactions. Six
conserved core cysteines form three disulfide bridges as
in non calcium-binding EGF domains, whose structures are
very similar. EGF_CA can be found in tandem repeat
arrangements.
Length = 38
Score = 38.4 bits (90), Expect = 7e-05
Identities = 16/36 (44%), Positives = 20/36 (55%), Gaps = 2/36 (5%)
Query: 112 CPLDSYCLNGGSCTYYDTVGELVCQCAEGYKGQRCE 147
C + C NGG+C +TVG C C GY G+ CE
Sbjct: 5 CASGNPCQNGGTCV--NTVGSYRCSCPPGYTGRNCE 38
>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 = 38.7 bits (90), Expect = 8e-05
Identities = 17/61 (27%), Positives = 26/61 (42%), Gaps = 1/61 (1%)
Query: 26 QSLRLVCRCKGNPLPAVSWFKDN-VEITTNKRLKIQFKKKRSTLIITRIRSEDAGRYECR 84
S+ L C G P V+WFK+ + + + TL I+ + ED+G Y C
Sbjct: 2 SSVTLTCSVSGPPQVDVTWFKEGKGLEESTTVGTDENRVSSITLTISNVTPEDSGTYTCV 61
Query: 85 G 85
Sbjct: 62 V 62
>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 = 39.0 bits (91), Expect = 1e-04
Identities = 18/73 (24%), Positives = 39/73 (53%), Gaps = 7/73 (9%)
Query: 17 LRNVSVKLRQSLRLVCRCKGNPLPAVSW------FKDNVEITTNKRLKIQFKKKRSTLII 70
L N + + + L C +G+P+P ++W F + + + + R+ ++ + S+L +
Sbjct: 8 LENQTAVELEQITLTCEAEGDPIPEITWRRATRNFSEG-DKSLDGRIVVRGHARVSSLTL 66
Query: 71 TRIRSEDAGRYEC 83
++ DAGRY+C
Sbjct: 67 KDVQLTDAGRYDC 79
>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 = 38.4 bits (89), Expect = 1e-04
Identities = 22/62 (35%), Positives = 30/62 (48%), Gaps = 7/62 (11%)
Query: 30 LVCRCKGN---PLPAVSWFKDNVEITTNKR----LKIQFKKKRSTLIITRIRSEDAGRYE 82
LV RC+ P WFK+ EI + +KI+ KKK S L I++ D G Y+
Sbjct: 1 LVLRCETVSEYPSLRFKWFKNGKEIGAKNKPDNKIKIRKKKKSSELQISKASLADNGEYK 60
Query: 83 CR 84
C
Sbjct: 61 CM 62
>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 = 37.9 bits (88), Expect = 2e-04
Identities = 15/58 (25%), Positives = 27/58 (46%), Gaps = 1/58 (1%)
Query: 27 SLRLVCRCKGNPLPAVSWFKDNVEITTNKRL-KIQFKKKRSTLIITRIRSEDAGRYEC 83
+++ C GNP P + W K+ E R+ + + + +LI+ + D G Y C
Sbjct: 11 TVKFRCPAAGNPTPTMRWLKNGKEFKQEHRIGGYKVRNQHWSLIMESVVPSDKGNYTC 68
>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 = 3e-04
Identities = 20/56 (35%), Positives = 26/56 (46%), Gaps = 3/56 (5%)
Query: 28 LRLVCRCKGNPLPAVSWFKDNVEITTNKRLKIQFKKKRSTLIITRIRSEDAGRYEC 83
L L C +G P P +SW K E+ ++ F K TL I + ED G Y C
Sbjct: 1 LLLECIAEGLPTPEISWIKIGGELPADRTKFENFNK---TLKIDNVSEEDDGEYRC 53
>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 = 37.6 bits (87), Expect = 4e-04
Identities = 20/66 (30%), Positives = 32/66 (48%), Gaps = 3/66 (4%)
Query: 30 LVCRCKGNPLPAVSWFKDNVEITTNKRLKIQFKKKRSTLIITRI-RSEDAGRYECRGTGV 88
L C +GNP+P W ++ EI T + + LII+ +D+GRY+C T
Sbjct: 24 LNCEARGNPVPTYRWLRNGTEIDTESDYR--YSLIDGNLIISNPSEVKDSGRYQCLATNS 81
Query: 89 HKDVVS 94
++S
Sbjct: 82 IGSILS 87
>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 = 37.0 bits (86), Expect = 4e-04
Identities = 19/73 (26%), Positives = 30/73 (41%), Gaps = 9/73 (12%)
Query: 30 LVCRCKGNPLPAVSWFKDNVEITTNKRLKIQFKKKRSTLIITRIRSEDA----GRYEC-- 83
+ C KGNP P SW ++ K ++ K TL+I + A G Y+C
Sbjct: 3 IKCEAKGNPPPTFSWTRNGTHFDPEKDPRVTMKPDSGTLVIDNMNGGRAEDYEGEYQCYA 62
Query: 84 ---RGTGVHKDVV 93
GT + ++
Sbjct: 63 SNELGTAISNEIH 75
>gnl|CDD|215652 pfam00008, EGF, EGF-like domain. There is no clear separation
between noise and signal. pfam00053 is very similar, but
has 8 instead of 6 conserved cysteines. Includes some
cytokine receptors. The EGF domain misses the N-terminus
regions of the Ca2+ binding EGF domains (this is the
main reason of discrepancy between swiss-prot domain
start/end and Pfam). The family is hard to model due to
many similar but different sub-types of EGF domains.
Pfam certainly misses a number of EGF domains.
Length = 32
Score = 35.5 bits (82), Expect = 6e-04
Identities = 16/34 (47%), Positives = 21/34 (61%), Gaps = 2/34 (5%)
Query: 112 CPLDSYCLNGGSCTYYDTVGELVCQCAEGYKGQR 145
C ++ C NGG+C DT G C+C EGY G+R
Sbjct: 1 CSPNNPCSNGGTCV--DTPGGYTCECPEGYTGKR 32
>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 = 6e-04
Identities = 20/85 (23%), Positives = 44/85 (51%), Gaps = 6/85 (7%)
Query: 21 SVKLRQSLRLVCRCKGNPLPAVSWFKDNVEITTNK-----RLKIQFKKKRSTLIITRIRS 75
+++L + + L C G+P+P+++W I++ + + ++ + S+L + I+
Sbjct: 13 AMELEEQITLTCEASGDPIPSITWRTSTRNISSEEKTLDGHIVVRSHARVSSLTLKYIQY 72
Query: 76 EDAGRYECRGTG-VHKDVVSAFAEV 99
DAG Y C + + +D S + EV
Sbjct: 73 TDAGEYLCTASNTIGQDSQSMYLEV 97
>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 = 36.7 bits (85), Expect = 7e-04
Identities = 20/73 (27%), Positives = 33/73 (45%), Gaps = 4/73 (5%)
Query: 11 PIEVSGLRNVSVKLRQSLRLVCRCKGNPLPAVSWFKDNVEITTNKRLKIQFKKKRSTLII 70
I V ++ Q++ L C GNP+P + W K + + ++ + + L I
Sbjct: 2 SIIVVFPKDTYALKGQNVTLECFALGNPVPQIKWRKVDGSMPSSA----EISMSGAVLKI 57
Query: 71 TRIRSEDAGRYEC 83
I+ ED G YEC
Sbjct: 58 PNIQFEDEGTYEC 70
>gnl|CDD|238010 cd00053, EGF, Epidermal growth factor domain, found in epidermal
growth factor (EGF) presents in a large number of
proteins, mostly animal; the list of proteins currently
known to contain one or more copies of an EGF-like
pattern is large and varied; the functional significance
of EGF-like domains in what appear to be unrelated
proteins is not yet clear; a common feature is that
these repeats are found in the extracellular domain of
membrane-bound proteins or in proteins known to be
secreted (exception: prostaglandin G/H synthase); the
domain includes six cysteine residues which have been
shown to be involved in disulfide bonds; the main
structure is a two-stranded beta-sheet followed by a
loop to a C-terminal short two-stranded sheet;
Subdomains between the conserved cysteines vary in
length; the region between the 5th and 6th cysteine
contains two conserved glycines of which at least one
is present in most EGF-like domains; a subset of
these bind calcium.
Length = 36
Score = 35.5 bits (82), Expect = 8e-04
Identities = 15/38 (39%), Positives = 18/38 (47%), Gaps = 3/38 (7%)
Query: 111 PCPLDSYCLNGGSCTYYDTVGELVCQCAEGYKGQ-RCE 147
C + C NGG+C +T G C C GY G CE
Sbjct: 1 ECAASNPCSNGGTCV--NTPGSYRCVCPPGYTGDRSCE 36
>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 = 35.8 bits (83), Expect = 0.001
Identities = 17/52 (32%), Positives = 26/52 (50%), Gaps = 4/52 (7%)
Query: 32 CRCKGNPLPAVSWFKDNVEITTNKRLKIQFKKKRSTLIITRIRSEDAGRYEC 83
C G+P+P V W K++ E+ R +I K +L I + + D G Y C
Sbjct: 5 CEVGGDPVPTVLWRKEDGELPKG-RAEILDDK---SLKIRNVTAGDEGSYTC 52
>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 = 36.3 bits (84), Expect = 0.001
Identities = 19/66 (28%), Positives = 33/66 (50%), Gaps = 3/66 (4%)
Query: 30 LVCRCKGNPLPAVSWFKDNVEITTNKRLKIQFKKKRSTLIITR-IRSEDAGRYECRGTGV 88
L CR +G+P P W + EI ++ L+I+ +++DAGRY+C + +
Sbjct: 24 LNCRARGSPPPTYRWLMNGTEIDD--EPDSRYSLVGGNLVISNPSKAKDAGRYQCLASNI 81
Query: 89 HKDVVS 94
V+S
Sbjct: 82 VGTVLS 87
>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 = 36.1 bits (83), Expect = 0.001
Identities = 20/78 (25%), Positives = 35/78 (44%), Gaps = 12/78 (15%)
Query: 32 CRCKGNPLPAVSWFKDNVEI--------TTNKRLKIQFKKKRSTLIITRIRSEDAGRYEC 83
C GNP PA+ W K+ + ++ R + + L IT ++ D G Y C
Sbjct: 8 CEATGNPQPAIFWQKEGSQNLLFSYQPPQSSSRFSVS---QTGDLTITNVQRSDVGYYIC 64
Query: 84 RGTGVHKDVVS-AFAEVS 100
+ V +++ A+ EV+
Sbjct: 65 QTLNVAGSILTKAYLEVT 82
>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 = 35.7 bits (82), Expect = 0.001
Identities = 15/56 (26%), Positives = 25/56 (44%), Gaps = 1/56 (1%)
Query: 29 RLVCRCKGNPLPAVSWFKD-NVEITTNKRLKIQFKKKRSTLIITRIRSEDAGRYEC 83
RL C G+P P ++W KD + + ++ + I ++ ED G Y C
Sbjct: 2 RLECAATGHPTPQIAWQKDGGTDFPAARERRMHVMPEDDVFFIVDVKIEDTGVYSC 57
>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 = 36.2 bits (83), Expect = 0.001
Identities = 22/71 (30%), Positives = 35/71 (49%), Gaps = 2/71 (2%)
Query: 17 LRNVSVKLRQSLRLVCRCKGNPLPAVSWFKDNVE-ITTNKRLKIQFKKKRSTLIITRIRS 75
L V + + +S C G P ++ W+ E I +++R+ +Q + RS L I
Sbjct: 7 LSKVELSVGESKFFTCTAIGEPE-SIDWYNPQGEKIVSSQRVVVQKEGVRSRLTIYNANI 65
Query: 76 EDAGRYECRGT 86
EDAG Y C+ T
Sbjct: 66 EDAGIYRCQAT 76
>gnl|CDD|214542 smart00179, EGF_CA, Calcium-binding EGF-like domain.
Length = 39
Score = 34.5 bits (80), Expect = 0.001
Identities = 16/37 (43%), Positives = 21/37 (56%), Gaps = 3/37 (8%)
Query: 112 CPLDSYCLNGGSCTYYDTVGELVCQCAEGYK-GQRCE 147
C + C NGG+C +TVG C+C GY G+ CE
Sbjct: 5 CASGNPCQNGGTCV--NTVGSYRCECPPGYTDGRNCE 39
>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 = 35.1 bits (81), Expect = 0.002
Identities = 16/57 (28%), Positives = 24/57 (42%), Gaps = 3/57 (5%)
Query: 32 CRCKGNPLPAVSWFKDNVEITTNKRLKIQFKKKRSTLIITRIRSEDAGRYECRGTGV 88
C+ K P P +SW K +T + R+ I +L I + D G+Y C
Sbjct: 8 CKPKAAPKPTISWSKGTELLTNSSRICIW---PDGSLEILNVTKSDEGKYTCFAENF 61
>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 = 35.3 bits (81), Expect = 0.002
Identities = 22/71 (30%), Positives = 32/71 (45%), Gaps = 9/71 (12%)
Query: 32 CRCKGNPLPAVSWFKDNVEITTNKRLKIQFKKKRSTLIITRIRSEDA----GRYEC---- 83
C KG P P+ SW ++ +K K+ K TL+I + E A G Y+C
Sbjct: 5 CEAKGKPPPSFSWTRNGTHFDIDKDPKVTMKPNTGTLVINIMNGEKAEAYEGVYQCTARN 64
Query: 84 -RGTGVHKDVV 93
RG V ++V
Sbjct: 65 ERGAAVSNNIV 75
>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 = 34.8 bits (80), Expect = 0.003
Identities = 22/72 (30%), Positives = 34/72 (47%), Gaps = 3/72 (4%)
Query: 17 LRNVSVKLRQSLRLVCRCKGNPLPAVSWFKDNVE-ITTNKRLKIQFKKK-RSTLIITRIR 74
+ + +S +C+ G P +SWF N E + T +++ + RSTL I
Sbjct: 7 PSQGEISVGESKFFLCQVIGEP-KDISWFSPNGEKLVTQQQISVVQNDDVRSTLTIYNAN 65
Query: 75 SEDAGRYECRGT 86
EDAG Y+C T
Sbjct: 66 IEDAGIYKCVAT 77
>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 = 34.5 bits (79), Expect = 0.003
Identities = 16/67 (23%), Positives = 29/67 (43%), Gaps = 7/67 (10%)
Query: 26 QSLRLVCRCKGNPLPAVSWFKDNVEIT---TNKRLKIQFKKKRSTLIITRIRSEDAGRYE 82
++ RL C+ +G P P ++W + I + R + LI+T ++ D Y+
Sbjct: 2 ETARLDCQVEGIPTPNITWSINGAPIEGTDPDPRRHVS----SGALILTDVQPSDTAVYQ 57
Query: 83 CRGTGVH 89
C H
Sbjct: 58 CEARNRH 64
>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 = 35.3 bits (82), Expect = 0.003
Identities = 10/17 (58%), Positives = 14/17 (82%)
Query: 67 TLIITRIRSEDAGRYEC 83
+L+IT +R ED+GRY C
Sbjct: 69 SLVITDLRLEDSGRYRC 85
>gnl|CDD|222457 pfam13927, Ig_3, Immunoglobulin domain. This family contains
immunoglobulin-like domains.
Length = 74
Score = 34.3 bits (78), Expect = 0.004
Identities = 19/75 (25%), Positives = 34/75 (45%), Gaps = 5/75 (6%)
Query: 13 EVSGLRNVSVKLRQSLRLVCRCKGNPLPA-VSWFKDNVEITTNKRLKIQFKKKRSTLIIT 71
++ + SV + L C +G P P +SW+++ + L STL ++
Sbjct: 3 VITVSPSPSVTSGGGVTLTCSAEGGPPPPTISWYRNGSISGGSGGLGS----SGSTLTLS 58
Query: 72 RIRSEDAGRYECRGT 86
+ SED+G Y C +
Sbjct: 59 SVTSEDSGTYTCVAS 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 = 34.6 bits (79), Expect = 0.005
Identities = 20/79 (25%), Positives = 33/79 (41%), Gaps = 9/79 (11%)
Query: 17 LRNVSVKLRQSLRLVCRCKGNPLPAVSWFKDNVEITTNKRLKIQFKKKRSTLIITRIRSE 76
++ Q++ L C GNP+P + W K + + + + L I I+ E
Sbjct: 8 FKDTYALKGQNVTLECFALGNPVPVIRWRKILEPMPATAEISMS----GAVLKIFNIQPE 63
Query: 77 DAGRYEC-----RGTGVHK 90
D G YEC +G H+
Sbjct: 64 DEGTYECEAENIKGKDKHQ 82
>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 = 34.2 bits (78), Expect = 0.005
Identities = 17/57 (29%), Positives = 30/57 (52%), Gaps = 7/57 (12%)
Query: 30 LVCRCKGNPLPAVSWFKDNVEIT---TNKRLKIQFKKKRSTLIITRIRSEDAGRYEC 83
L+CR GNP P++SW + V I T+ K+ T+I ++++ + Y+C
Sbjct: 6 LICRANGNPKPSISWLTNGVPIEIAPTDPSRKVD----GDTIIFSKVQERSSAVYQC 58
>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 = 33.5 bits (77), Expect = 0.006
Identities = 18/53 (33%), Positives = 25/53 (47%), Gaps = 4/53 (7%)
Query: 29 RLVCRCKGNPLPAVSWFKDNVEITTNKRLKIQFKKKRSTLIITRIRSEDAGRY 81
RL + K P P + W+K+ I+ R KK +L I + EDAG Y
Sbjct: 2 RLPVKVKAYPPPEIQWYKNGKLISEKNR----TKKSGHSLTIKDVTEEDAGNY 50
>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 = 34.2 bits (78), Expect = 0.007
Identities = 21/70 (30%), Positives = 34/70 (48%), Gaps = 4/70 (5%)
Query: 32 CRCKGNPLPAVSWFKDNVEITTNKRLKIQFKKKRSTLIITRI-RSEDAGRYECRGTGVHK 90
CR + NP P W K+N++I ++ L+I + +DAGRY C + ++
Sbjct: 26 CRARANPFPIYKWRKNNLDIDL---TNDRYSMVGGNLVINNPDKYKDAGRYVCIVSNIYG 82
Query: 91 DVVSAFAEVS 100
V S A +S
Sbjct: 83 KVRSREATLS 92
>gnl|CDD|143230 cd05753, Ig2_FcgammaR_like, Second immunoglobulin (Ig)-like
domain of Fcgamma-receptors (FcgammaRs) and similar
proteins. Ig2_FcgammaR_like: domain similar to the
second immunoglobulin (Ig)-like domain of
Fcgamma-receptors (FcgammaRs). Interactions between IgG
and FcgammaR are important to the initiation of
cellular and humoral response. IgG binding to FcgammaR
leads to a cascade of signals and ultimately to
functions such as
antibody-dependent-cellular-cytotoxicity (ADCC),
endocytosis, phagocytosis, release of inflammatory
mediators, etc. FcgammaR has two Ig-like domains. This
group also contains FcepsilonRI, which binds IgE with
high affinity.
Length = 83
Score = 33.5 bits (77), Expect = 0.008
Identities = 17/71 (23%), Positives = 26/71 (36%), Gaps = 9/71 (12%)
Query: 26 QSLRLVCRC-KGNPLPAVSWFKDNVEITTNKRLKIQFKKKRSTLIITRIRSEDAGRYECR 84
+ L L C K P+ V++++D + S L I + D+G Y C
Sbjct: 15 EPLVLRCHGWKNKPVYKVTYYRDGKAKK--------YSHSNSNLSIPQATLSDSGSYHCS 66
Query: 85 GTGVHKDVVSA 95
G D S
Sbjct: 67 GIIGSYDYSSE 77
>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 = 34.1 bits (78), Expect = 0.009
Identities = 22/97 (22%), Positives = 37/97 (38%), Gaps = 23/97 (23%)
Query: 11 PIEVSG-LRNVSVKLRQSLRLVCRCK-GNPLPAVSWFKDN-----------VEITTNKRL 57
V+ R V+V S+ L C + +V W+K V T N ++
Sbjct: 1 MSLVTQPPRPVTVAEGGSVTLPCSFSSSSGSTSVYWYKQPLGKGPELIIHYVTSTPNGKV 60
Query: 58 KIQFKKKRS----------TLIITRIRSEDAGRYECR 84
+FK + + +L I+ +R D+G Y C
Sbjct: 61 GPRFKGRVTLSGNGSKNDFSLTISNLRLSDSGTYTCA 97
>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 = 33.4 bits (76), Expect = 0.009
Identities = 17/56 (30%), Positives = 27/56 (48%), Gaps = 4/56 (7%)
Query: 32 CRCKGNPLPAVSWFKDNVEITTNKRLKIQFKKKRSTLII---TRIRSED-AGRYEC 83
C KGNP+P W ++ K ++ +++ TL+I R ED G Y+C
Sbjct: 5 CEAKGNPVPTFQWTRNGKFFNVAKDPRVSMRRRSGTLVIDFSGGGRPEDYEGEYQC 60
>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 = 33.7 bits (77), Expect = 0.012
Identities = 16/67 (23%), Positives = 23/67 (34%), Gaps = 19/67 (28%)
Query: 30 LVCRCKGNPLPAVSWFKDNVEITTNKRLKIQFKKKRSTLII-------------TRIRSE 76
L C+ +G P P + W K+ + L+ RS I+ R
Sbjct: 21 LNCKAEGRPTPTIQWLKN------GQPLETDKDDPRSHRIVLPSGSLFFLRVVHGRKGRS 74
Query: 77 DAGRYEC 83
D G Y C
Sbjct: 75 DEGVYVC 81
>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 = 33.4 bits (77), Expect = 0.012
Identities = 20/54 (37%), Positives = 26/54 (48%), Gaps = 4/54 (7%)
Query: 37 NPLPAVSWFKDNVEITTNKRLKIQFKKKRSTLIITRIRSEDAGRYECRGTGVHK 90
N LP V W+KD + R + K S L+I + EDAG Y C+ T H
Sbjct: 27 NTLPPVQWYKDCKLLE-GDRKRFV---KGSKLLIQNVTEEDAGNYTCKLTFTHN 76
>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 = 33.4 bits (77), Expect = 0.013
Identities = 12/49 (24%), Positives = 22/49 (44%), Gaps = 5/49 (10%)
Query: 38 PLPAVSWFKDNVEITTNKRLKIQFKKK-----RSTLIITRIRSEDAGRY 81
P P ++W DN +T + + + S L + R++ +AG Y
Sbjct: 32 PPPHINWTYDNRTLTNKLTEIVTSENESEYRYVSELKLVRLKESEAGTY 80
>gnl|CDD|143292 cd05884, Ig2_Necl-3, Second immunoglobulin (Ig)-like domain of
nectin-like molecule-3 (Necl-3, also known as cell
adhesion molecule 2 (CADM2)). Ig2_Necl-3: second
immunoglobulin (Ig)-like domain of nectin-like
molecule-3 (Necl-3, also known as cell adhesion
molecule 2 (CADM2)). 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. 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.
Ig domains are likely to participate in ligand binding
and recognition.
Length = 83
Score = 32.6 bits (74), Expect = 0.019
Identities = 20/63 (31%), Positives = 31/63 (49%), Gaps = 6/63 (9%)
Query: 28 LRLVCRCKGN-PLPAVSWFKDNVEITTNKRLKIQFKKKR-----STLIITRIRSEDAGRY 81
++L C+ G+ P + WFK++ EI K LK + ++ STL RS+D
Sbjct: 2 MQLTCKTSGSKPAADIRWFKNDKEIKDVKYLKEEDANRKTFTVSSTLDFRVDRSDDGVAI 61
Query: 82 ECR 84
CR
Sbjct: 62 ICR 64
>gnl|CDD|165214 PHA02887, PHA02887, EGF-like protein; Provisional.
Length = 126
Score = 33.4 bits (76), Expect = 0.023
Identities = 12/33 (36%), Positives = 18/33 (54%), Gaps = 1/33 (3%)
Query: 115 DSYCLNGGSCTYYDTVGELVCQCAEGYKGQRCE 147
+ +C+NG C + E C C +GY G RC+
Sbjct: 91 NDFCING-ECMNIIDLDEKFCICNKGYTGIRCD 122
>gnl|CDD|165381 PHA03099, PHA03099, epidermal growth factor-like protein (EGF-like
protein); Provisional.
Length = 139
Score = 33.5 bits (76), Expect = 0.023
Identities = 13/33 (39%), Positives = 20/33 (60%), Gaps = 1/33 (3%)
Query: 115 DSYCLNGGSCTYYDTVGELVCQCAEGYKGQRCE 147
D YCL+G C + + + C+C+ GY G RC+
Sbjct: 50 DGYCLHG-DCIHARDIDGMYCRCSHGYTGIRCQ 81
>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 = 0.023
Identities = 21/56 (37%), Positives = 28/56 (50%), Gaps = 2/56 (3%)
Query: 28 LRLVCRCKGNPLPAVSWFKDNVEITTN-KRLKI-QFKKKRSTLIITRIRSEDAGRY 81
+RL CR P P + W K+N +T N R+ + Q R L+I EDAG Y
Sbjct: 1 VRLECRVSAIPPPQIFWKKNNEMLTYNTDRISLYQDNCGRICLLIQNANKEDAGWY 56
>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 = 32.5 bits (74), Expect = 0.023
Identities = 14/58 (24%), Positives = 26/58 (44%)
Query: 26 QSLRLVCRCKGNPLPAVSWFKDNVEITTNKRLKIQFKKKRSTLIITRIRSEDAGRYEC 83
+++ C G P P ++W + + + R+ I + TL I ++ D G Y C
Sbjct: 2 ETVEFTCVATGVPTPIINWRLNWGHVPDSARVSITSEGGYGTLTIRDVKESDQGAYTC 59
>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 = 32.3 bits (73), Expect = 0.024
Identities = 21/56 (37%), Positives = 28/56 (50%), Gaps = 2/56 (3%)
Query: 28 LRLVCRCKGNPLPAVSWFKDNVEITTN-KRLKI-QFKKKRSTLIITRIRSEDAGRY 81
+RL CR G P P + W K+N +T N R+ + Q L+I EDAG Y
Sbjct: 1 VRLECRVSGVPHPQIFWKKENESLTHNTDRVSMHQDNCGYICLLIQGATKEDAGWY 56
>gnl|CDD|143285 cd05877, Ig_LP_like, Immunoglobulin (Ig)-like domain of human
cartilage link protein (LP). Ig_LP_like:
immunoglobulin (Ig)-like domain similar to that that
found in human cartilage link protein (LP). In
cartilage, chondroitin-keratan sulfate proteoglycan
(CSPG), aggrecan, forms cartilage link protein
stabilized aggregates with hyaluronan (HA). These
aggregates contribute to the tissue's load bearing
properties. Aggregates having other CSPGs substituting
for aggrecan may contribute to the structural integrity
of many different tissues. Members of the vertebrate
HPLN (hyaluronan/HA and proteoglycan binding link)
protein family are physically linked adjacent to CSPG
genes.
Length = 106
Score = 32.3 bits (74), Expect = 0.035
Identities = 10/17 (58%), Positives = 13/17 (76%)
Query: 67 TLIITRIRSEDAGRYEC 83
+L+IT +R ED GRY C
Sbjct: 69 SLVITDLRLEDYGRYRC 85
>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 = 31.4 bits (71), Expect = 0.046
Identities = 15/53 (28%), Positives = 22/53 (41%), Gaps = 5/53 (9%)
Query: 29 RLVCRCKGNPLPAVSWFKDNVEITTNKRLKIQFKKKRSTLIITRIRSEDAGRY 81
++ + G P P V W+K+ I N K L I + +DAG Y
Sbjct: 2 KIPVKYYGYPPPEVKWYKNGQLIVLNHTFKRGV-----HLTIYEVTEKDAGNY 49
>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 = 31.3 bits (71), Expect = 0.057
Identities = 15/58 (25%), Positives = 27/58 (46%), Gaps = 2/58 (3%)
Query: 26 QSLRLVCRCKGNPLPAVSWFKDNVEITTNKRLKIQFKKKRSTLIITRIRSEDAGRYEC 83
Q L C+ +G+P PA+ W + ++ +N + + TL I +D G + C
Sbjct: 2 QRATLRCKARGDPEPAIHWISPDGKLISNSSRTLVYDN--GTLDILITTVKDTGSFTC 57
>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 = 30.7 bits (69), Expect = 0.071
Identities = 20/72 (27%), Positives = 31/72 (43%), Gaps = 8/72 (11%)
Query: 28 LRLVCRCKGNPLPAVSWFKDNVEITTNKRLKIQFKKKRSTLIITRIRSEDAGRYEC---- 83
L L C +G P P V W + + ++ N+ K+ K TL + + D G Y C
Sbjct: 1 LVLECIAEGLPTPEVHWDRIDGPLSPNRTKKLNNNK---TLQLDNVLESDDGEYVCTAEN 57
Query: 84 -RGTGVHKDVVS 94
G+ H V+
Sbjct: 58 SEGSARHHYTVT 69
>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 = 30.6 bits (69), Expect = 0.091
Identities = 17/57 (29%), Positives = 26/57 (45%), Gaps = 6/57 (10%)
Query: 27 SLRLVCRCKGNPLPAVSWFKDNVEITTNKRLKIQFKKKRSTLIITRIRSEDAGRYEC 83
S+ L C G P+P V W K E+T + + R+ L +T I ++ Y C
Sbjct: 3 SVNLTCVAVGAPMPYVKWMKGGEELTKEDEMPV----GRNVLELTNIY--ESANYTC 53
>gnl|CDD|143269 cd05861, Ig1_PDGFR-alphabeta, Frst immunoglobulin (Ig)-like domain
of platelet-derived growth factor (PDGF) receptors (R),
alpha (CD140a), and beta (CD140b). Ig1_PDGFR-alphabeta:
The first immunoglobulin (Ig)-like domain of
platelet-derived growth factor (PDGF) receptors (R),
alpha (CD140a), and beta (CD140b). PDGF is a potent
mitogen for connective tissue cells. PDGF-stimulated
processes are mediated by three different PDGFs
(PDGF-A,-B, and C). PDGFRalpha binds to all three PDGFs,
whereas the PDGFRbeta binds only to PDGF-B. PDGFRs alpha
and beta have similar organization: an extracellular
component with five Ig-like domains, a transmembrane
segment, and a cytoplasmic portion having protein
tyrosine kinase activity. In mice, PDGFRalpha and
PDGFRbeta are essential for normal development.
Length = 84
Score = 30.6 bits (69), Expect = 0.11
Identities = 22/80 (27%), Positives = 35/80 (43%), Gaps = 5/80 (6%)
Query: 26 QSLRLVCRCKGNPLPAVSWFKDNVEITTNKR----LKIQFKKKRSTLIITRIRSEDAGRY 81
+++ + C +GN + SW +I +K+ RSTL ED+G Y
Sbjct: 2 ETITVNCIVQGNEVVDFSWTYPGKDIGKGIPEVEEVKVPATTLRSTLTFPHATVEDSGTY 61
Query: 82 ECRGTGVHKDVVSAFAEVSI 101
EC +D AF +V+I
Sbjct: 62 ECAAHESTQD-QKAFKKVNI 80
>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 = 30.3 bits (68), Expect = 0.12
Identities = 15/54 (27%), Positives = 24/54 (44%), Gaps = 1/54 (1%)
Query: 30 LVCRCKGNPLPAVSWFKDNVEITTNKRLKIQFKKKRSTLIITRIRSEDAGRYEC 83
L C G+P P WF+D + ++ + K TL + +D+G Y C
Sbjct: 3 LRCHIDGHPRPTYQWFRDGTPL-SDGQGNYSVSSKERTLTLRSAGPDDSGLYYC 55
>gnl|CDD|214544 smart00181, EGF, Epidermal growth factor-like domain.
Length = 35
Score = 29.0 bits (65), Expect = 0.16
Identities = 15/38 (39%), Positives = 16/38 (42%), Gaps = 4/38 (10%)
Query: 111 PCPLDSYCLNGGSCTYYDTVGELVCQCAEGYKGQ-RCE 147
C C NG T +T G C C GY G RCE
Sbjct: 1 ECASGGPCSNG---TCINTPGSYTCSCPPGYTGDKRCE 35
>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 = 30.2 bits (68), Expect = 0.17
Identities = 19/93 (20%), Positives = 32/93 (34%), Gaps = 3/93 (3%)
Query: 11 PIEVSGLRNVSVKLRQSLRLVCRCKGNPLPAVSWFKDNVEITTNKRLKIQFKKKRSTLII 70
I V G V + + C +G+PLP V W + + + ++ L +
Sbjct: 1 TIPVDGPNATVVYEGGTATIRCTAEGSPLPKVEWIIAGLIVIQTRTDTLETTVDIYNLQL 60
Query: 71 TRIRSEDAGRYECRGTGVHKDVVSAFAEVSINL 103
+ I SE C V A V + +
Sbjct: 61 SNITSETQTTVTCT---AENPVGQANVSVQVTV 90
>gnl|CDD|143326 cd07702, Ig2_VEGFR-1, Second immunoglobulin (Ig)-like domain of
vascular endothelial growth factor receptor 1
(VEGFR-1). Ig2_VEGFR-1: Second immunoglobulin
(Ig)-like domain of vascular endothelial growth factor
receptor 1 (VEGFR-1). 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-1 binds VEGF-A strongly; 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-1 may play an inhibitory rolet in the
function of VEGFR-2 by binding VEGF-A and interfering
with its interaction with VEGFR-2. VEGFR-1 has a
signaling role in mediating monocyte chemotaxis and may
mediate a chemotactic and a survival signal in
hematopoietic stem cells or leukemia cells.
Length = 72
Score = 29.5 bits (66), Expect = 0.21
Identities = 17/53 (32%), Positives = 23/53 (43%), Gaps = 3/53 (5%)
Query: 29 RLVCRCKGNPLPAVSWFKDNVEITTNKRLKIQFKKKRSTLIITRIRSEDAGRY 81
RL + K P P V W KD + ++ S L+I + EDAG Y
Sbjct: 2 RLTPKVKAFPAPEVIWLKDGLPAA--EKCSRYHVDGYS-LVIKDVTEEDAGIY 51
>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 = 29.8 bits (67), Expect = 0.22
Identities = 20/82 (24%), Positives = 32/82 (39%), Gaps = 5/82 (6%)
Query: 25 RQSLRLVCRCKGNPLPAVSWFKDNVEITTNKRLKIQFKKKRSTLII----TRIRSEDAGR 80
+ L C +G P P + W KD V + + Q S LI ++ D G
Sbjct: 14 GGPVVLNCSAEGEPPPKIEWKKDGVLLNLVSDERRQQLPNGSLLITSVVHSKHNKPDEGF 73
Query: 81 YECRGT-GVHKDVVSAFAEVSI 101
Y+C +VS A +++
Sbjct: 74 YQCVAQNDSLGSIVSRTARLTV 95
>gnl|CDD|165173 PHA02826, PHA02826, IL-1 receptor-like protein; Provisional.
Length = 227
Score = 31.0 bits (70), Expect = 0.25
Identities = 13/42 (30%), Positives = 22/42 (52%), Gaps = 2/42 (4%)
Query: 42 VSWFKDNVEITTNKRLKIQFKKKRSTLIITRIRSEDAGRYEC 83
++W+K+ + R IQ + STL+I +D+G Y C
Sbjct: 166 LTWYKNGNIVLYTDR--IQLRNNNSTLVIKSATHDDSGIYTC 205
>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 = 29.9 bits (68), Expect = 0.27
Identities = 11/38 (28%), Positives = 15/38 (39%), Gaps = 2/38 (5%)
Query: 48 NVEITTNKRLKIQFKK--KRSTLIITRIRSEDAGRYEC 83
N E R K K S+L I+ + D+ Y C
Sbjct: 50 NGEEKEKGRFSATLDKSRKSSSLHISAAQLSDSAVYFC 87
>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 = 29.6 bits (67), Expect = 0.31
Identities = 16/84 (19%), Positives = 27/84 (32%), Gaps = 20/84 (23%)
Query: 20 VSVKLRQSLRLVCRCKGN-PLPAVSWFK-----------------DNVEITTNKRLKIQF 61
+SV +S+ L C G+ + W++ R
Sbjct: 1 LSVSEGESVTLSCTYSGSFSSYYIFWYRQKPGKGPELLIYISSNGSQYAGGVKGRFSGTR 60
Query: 62 --KKKRSTLIITRIRSEDAGRYEC 83
K TL I+ ++ ED+ Y C
Sbjct: 61 DSSKSSFTLTISSLQPEDSAVYYC 84
>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 = 29.0 bits (65), Expect = 0.35
Identities = 15/62 (24%), Positives = 27/62 (43%), Gaps = 11/62 (17%)
Query: 30 LVCRCKGNPLPAVSWFKDNVEITTNKRLKIQFKKKRSTLIITRI--------RSEDAGRY 81
C G P P ++W K ++ + L ++ R +++T I + +DAG Y
Sbjct: 6 FHCDVTGRPPPEITWEK---QVHGKENLIMRPNHVRGNVVVTNIGQLVIYNAQPQDAGLY 62
Query: 82 EC 83
C
Sbjct: 63 TC 64
>gnl|CDD|201923 pfam01683, EB, EB module. This domain has no known function. It is
found in several C. elegans proteins. The domain
contains 8 conserved cysteines that probably form four
disulphide bridges. This domain is found associated with
kunitz domains pfam00014.
Length = 52
Score = 28.2 bits (63), Expect = 0.37
Identities = 14/42 (33%), Positives = 15/42 (35%), Gaps = 8/42 (19%)
Query: 107 NMGGPCPLDSYCLNGGSCTYYDTVGELVCQCAEGY--KGQRC 146
G C D C G C CQC EG+ G RC
Sbjct: 17 LPGESCEYDEQCQGGSVCI------NGTCQCPEGFTLVGGRC 52
>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 = 28.9 bits (65), Expect = 0.43
Identities = 17/66 (25%), Positives = 27/66 (40%), Gaps = 1/66 (1%)
Query: 18 RNVSVKLRQSLRLVCRCKGNPLPAVSWFKDNVEITTNKRLKIQFKKKRSTLIITRIRSED 77
+ V+V S+ L C K N L +V W + + + + L+I + D
Sbjct: 4 KVVTVVEGNSVFLECSPKSN-LASVVWLFQGGPLQRKEEPEERLLVTEDGLLIRSVSPAD 62
Query: 78 AGRYEC 83
AG Y C
Sbjct: 63 AGVYTC 68
>gnl|CDD|143273 cd05865, Ig1_NCAM-1, First immunoglobulin (Ig)-like domain of
neural cell adhesion molecule NCAM-1. Ig1_NCAM-1: 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.
Length = 96
Score = 29.2 bits (65), Expect = 0.46
Identities = 22/87 (25%), Positives = 39/87 (44%), Gaps = 8/87 (9%)
Query: 22 VKLRQSLRLVCRCKGNPLPA-VSWFKDNVEITTNKRLKIQFKKK---RSTLIITRIRSED 77
+ + +S +C+ G +SWF N E T + +I + STL I +D
Sbjct: 12 ISVGESKFFLCQVAGEAKDKDISWFSPNGEKLTPNQQRISVVRNDDYSSTLTIYNANIDD 71
Query: 78 AGRYECRGTGVHKDVVSAFAEVSINLR 104
AG Y+C V + +E ++N++
Sbjct: 72 AGIYKC----VVSNEDEGESEATVNVK 94
>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 = 28.4 bits (63), Expect = 0.48
Identities = 17/52 (32%), Positives = 21/52 (40%), Gaps = 3/52 (5%)
Query: 32 CRCKGNPLPAVSWFKDNVEITTNKRLKIQFKKKRSTLIITRIRSEDAGRYEC 83
C+ K P P SW K + N R+ I +L I I D G Y C
Sbjct: 8 CKPKAAPKPKFSWSKGTELLVNNSRISIW---DDGSLEILNITKLDEGSYTC 56
>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 = 29.0 bits (65), Expect = 0.49
Identities = 13/51 (25%), Positives = 23/51 (45%), Gaps = 1/51 (1%)
Query: 42 VSWFKDNVEITTNKRLKIQFKKKRSTLIITRIRSEDAGRYECRGTGVHKDV 92
+ W+KD+V + + K K + L I + D+G Y C+ H+
Sbjct: 32 LQWYKDSVLLDKDNE-KFYSLKGSTYLHIIDVSLNDSGYYTCKLQFTHEGK 81
>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 = 28.9 bits (65), Expect = 0.62
Identities = 13/60 (21%), Positives = 19/60 (31%), Gaps = 18/60 (30%)
Query: 42 VSWFKDNVEITTN---------------KRLKIQFKKKRS---TLIITRIRSEDAGRYEC 83
V+W K N ++ F T+ I+ +R ED G Y C
Sbjct: 20 VTWMKITGGSKQNIAVFHPQYGISIPPSYEGRVSFLNSSLEDATISISNLRLEDEGNYIC 79
>gnl|CDD|143281 cd05873, Ig_Sema4D_like, Immunoglobulin (Ig)-like domain of the
class IV semaphorin Sema4D. Ig_Sema4D_like;
Immunoglobulin (Ig)-like domain of Sema4D. Sema4D is a
Class IV semaphorin. Semaphorins are classified based
on structural features additional to the Sema domain.
Sema4D has extracellular Sema and Ig domains, a
transmembrane domain, and a short cytoplasmic domain.
Sema4D plays a part in the development of GABAergic
synapses. Sema4D in addition is an immune semaphorin.
It is abundant on resting T cells; its expression is
weak on resting B cells and antigen presenting cells
(APCs), but is upregulated by various stimuli. The
receptor used by Sema4D in the immune system is CD72.
Sem4D enhances the activation of B cells and DCs
through binding CD72, perhaps by reducing CD72s
inhibitory signals. The receptor used by Sema4D in the
non-lymphatic tissues is plexin-B1. Sem4D is anchored
to the cell surface but its extracellular domain can be
released from the cell surface by a
metalloprotease-dependent process. Sem4D may mediate
its effects in its membrane bound form, and/or its
cleaved form.
Length = 87
Score = 28.6 bits (64), Expect = 0.63
Identities = 20/62 (32%), Positives = 26/62 (41%), Gaps = 6/62 (9%)
Query: 23 KLRQSLRLVCRCKGNPLPAVSW-FKDNVEITTNKRLKIQFKKKRSTLIITRIRSEDAGRY 81
KL + L C K N L V W F V + + + R L+I DAGRY
Sbjct: 9 KLGNNAELKCSPKSN-LARVVWKFDGKVLTPESAKYLLY----RDGLLIFNASEADAGRY 63
Query: 82 EC 83
+C
Sbjct: 64 QC 65
>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 = 28.0 bits (62), Expect = 0.75
Identities = 15/52 (28%), Positives = 25/52 (48%), Gaps = 3/52 (5%)
Query: 32 CRCKGNPLPAVSWFKDNVEITTNKRLKIQFKKKRSTLIITRIRSEDAGRYEC 83
C G P P V W K+ + + KI K+ + ++ ++S D G Y+C
Sbjct: 6 CEVTGKPTPTVKWVKNGDMVIPSDYFKIV--KEHNLQVLGLVKS-DEGFYQC 54
>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 = 28.2 bits (63), Expect = 0.85
Identities = 15/70 (21%), Positives = 22/70 (31%), Gaps = 8/70 (11%)
Query: 23 KLRQSLRLVCRCKG-NPLPA-VSWFKDNVEITTNKRLKIQFKKK------RSTLIITRIR 74
L S+ L C G P V+W K+ E+T+ S L ++
Sbjct: 11 LLGGSVTLTCLATGFYPPDITVTWLKNGKELTSGVTTTPPVPNSDGTYSVSSQLTVSPSD 70
Query: 75 SEDAGRYECR 84
Y C
Sbjct: 71 WNSGDTYTCV 80
>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 = 28.2 bits (63), Expect = 1.0
Identities = 11/25 (44%), Positives = 15/25 (60%), Gaps = 3/25 (12%)
Query: 67 TLIITRIRSEDAGRYECRGTGVHKD 91
T+ + ++R EDAG Y C GV D
Sbjct: 65 TVTLNQLRKEDAGWYWC---GVGDD 86
>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 = 27.7 bits (62), Expect = 1.2
Identities = 16/60 (26%), Positives = 23/60 (38%), Gaps = 5/60 (8%)
Query: 30 LVCRCKGNPLPA-VSWFKDNVEITTNKRLKIQFKKK----RSTLIITRIRSEDAGRYECR 84
L C G+ A + WFK + E+ K + K S+L R +D CR
Sbjct: 4 LTCTSSGSKPAATIRWFKGDKELKGVKLKEEDENGKTFTVTSSLRFQVDREDDGAPIICR 63
>gnl|CDD|143279 cd05871, Ig_Semaphorin_classIII, Immunoglobulin (Ig)-like domain
of class III semaphorin. Ig_Semaphorin_class III;
Immunoglobulin (Ig)-like domain of class III
semaphorins. Semaphorins are classified into various
classes on the basis of structural features additional
to the Sema domain. Class III semaphorins are a
vertebrate class having a Sema domain, an Ig domain, a
short basic domain, and are secreted. They have been
shown to be axonal guidance cues and have a part in the
regulation of the cardiovascular, immune and
respiratory systems. Sema3A, the prototype member of
this class III subfamily, induces growth cone collapse
and is an inhibitor of axonal sprouting. In perinatal
rat cortex as a chemoattractant, it functions to
direct, for pyramidal neurons, the orientated extension
of apical dendrites. It may play a role, prior to the
development of apical dendrites, in signaling the
radial migration of newborn cortical neurons towards
the upper layers. Sema3A selectively inhibits vascular
endothelial growth factor receptor (VEGF)-induced
angiogenesis and induces microvascular permeability.
This group also includes Sema3B, -C, -D, -E, -G.
Length = 91
Score = 27.7 bits (62), Expect = 1.3
Identities = 12/59 (20%), Positives = 23/59 (38%), Gaps = 3/59 (5%)
Query: 30 LVCRCKGNPLPAVSWF--KDNVEITTNKRLKIQFKKKRSTLIITRIRSEDAGRYECRGT 86
L C K +P +V W + + + + + L++ ++ DAG Y C
Sbjct: 16 LECLPK-SPQASVKWLFQRGGDQRKEEVKTEERLIHTERGLLLRSLQRSDAGVYTCTAV 73
>gnl|CDD|215518 PLN02959, PLN02959, aminoacyl-tRNA ligase.
Length = 1084
Score = 28.9 bits (65), Expect = 1.6
Identities = 9/27 (33%), Positives = 14/27 (51%)
Query: 77 DAGRYECRGTGVHKDVVSAFAEVSINL 103
D R C G+++D+V F +V L
Sbjct: 835 DEYRLSCGSGGMNRDLVWRFMDVQTRL 861
>gnl|CDD|214910 smart00917, LeuA_dimer, LeuA allosteric (dimerisation) domain.
This is the C-terminal regulatory (R) domain of
alpha-isopropylmalate synthase, which catalyses the
first committed step in the leucine biosynthetic
pathway. This domain, is an internally duplicated
structure with a novel fold. It comprises two similar
units that are arranged such that the two -helices pack
together in the centre, crossing at an angle of 34
degrees, sandwiched between the two three-stranded,
antiparallel beta-sheets. The overall domain is thus
constructed as a beta-alpha-beta three-layer sandwich.
Length = 131
Score = 27.8 bits (63), Expect = 1.6
Identities = 9/31 (29%), Positives = 12/31 (38%), Gaps = 1/31 (3%)
Query: 65 RSTLIITRIRSEDAGRYECRGTGVHKDVVSA 95
L + E GR G G+ D+V A
Sbjct: 90 TDALAEVYVELEYGGR-IVWGVGIDTDIVEA 119
>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 = 27.0 bits (60), Expect = 1.9
Identities = 11/43 (25%), Positives = 18/43 (41%), Gaps = 3/43 (6%)
Query: 55 KRLKIQFKKKRSTLIITRIRSEDAGRYECR---GTGVHKDVVS 94
++ + + STL I +D+G Y C GT K+
Sbjct: 38 RQSLSEATELSSTLTIPNATLKDSGTYTCAASSGTMDQKESTK 80
>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 = 27.1 bits (60), Expect = 2.0
Identities = 16/76 (21%), Positives = 29/76 (38%), Gaps = 7/76 (9%)
Query: 12 IEVSGLRNVSVKLRQSLRLVCRCKG-NPLPAVSWFKDNVEITTNKRLKIQFKKKRSTLII 70
+ V R+ V+ + +CR K +P + W + + + L I
Sbjct: 3 VTVEEPRSQEVRPGADVSFICRAKSKSPAYTLVWTRVGGGLPSRAM------DFNGILTI 56
Query: 71 TRIRSEDAGRYECRGT 86
++ DAG Y C G+
Sbjct: 57 RNVQLSDAGTYVCTGS 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 = 27.2 bits (61), Expect = 2.0
Identities = 10/38 (26%), Positives = 16/38 (42%), Gaps = 5/38 (13%)
Query: 67 TLIITRIRSEDAGRYECRGTGVHKDVVSAFAEVSINLR 104
L I +R+ D G Y C D + E ++ L+
Sbjct: 66 ALRIHNVRASDEGLYTCF---FQSD--GFYEEATVELK 98
>gnl|CDD|143239 cd05762, Ig8_MLCK, Eighth immunoglobulin (Ig)-like domain of
human myosin light-chain kinase (MLCK). Ig8_MLCK: the
eighth immunoglobulin (Ig)-like domain of human myosin
light-chain kinase (MLCK). MLCK is a key regulator of
different forms of cell motility involving actin and
myosin II. Agonist stimulation of smooth muscle cells
increases cytosolic Ca2+, which binds calmodulin. This
Ca2+-calmodulin complex in turn binds to and activates
MLCK. Activated MLCK leads to the phosphorylation of
the 20 kDa myosin regulatory light chain (RLC) of
myosin II and the stimulation of actin-activated myosin
MgATPase activity. MLCK is widely present in vertebrate
tissues; it phosphorylates the 20 kDa RLC of both
smooth and nonmuscle myosin II. Phosphorylation leads
to the activation of the myosin motor domain and
altered structural properties of myosin II. In smooth
muscle MLCK it is involved in initiating contraction.
In nonmuscle cells, MLCK may participate in cell
division and cell motility; it has been suggested MLCK
plays a role in cardiomyocyte differentiation and
contraction through regulation of nonmuscle myosin II.
Length = 98
Score = 27.2 bits (60), Expect = 2.1
Identities = 17/60 (28%), Positives = 28/60 (46%)
Query: 22 VKLRQSLRLVCRCKGNPLPAVSWFKDNVEITTNKRLKIQFKKKRSTLIITRIRSEDAGRY 81
V+ +S+ L C+ G +W K +I + +KI+ + S L IT + E G Y
Sbjct: 12 VRAGESVELFCKVTGTQPITCTWMKFRKQIQEGEGIKIENTENSSKLTITEGQQEHCGCY 71
>gnl|CDD|204999 pfam12661, hEGF, Human growth factor-like EGF. hEGF, or human
growth factor-like EGF, domains have six conserved
residues disulfide-bonded into the characteristic
'ababcc' pattern. They are involved in growth and
proliferation of cells, in proteins of the Notch/Delta
pathway, neurogulin and selectins. hEGFs are also found
in mosaic proteins with four-disulfide laminin EGFs such
as aggrecan and perlecan. The core fold of the EGF
domain consists of two small beta-hairpins packed
against each other. Two major structural variants have
been identified based on the structural context of the
C-terminal Cys residue of disulfide 'c' in the
C-terminal hairpin: hEGFs and cEGFs. In hEGFs the
C-terminal thiol resides in the beta-turn, resulting in
shorter loop-lengths between the Cys residues of
disulfide 'c', typically C[8-9]XC. These shorter
loop-lengths are also typical of the four-disulfide EGF
domains, laminin ad integrin. Tandem hEGF domains have
six linking residues between terminal cysteines of
adjacent domains. hEGF domains may or may not bind
calcium in the linker region. hEGF domains with the
consensus motif CXD4X[F,Y]XCXC are hydroxylated
exclusively in the Asp residue.
Length = 13
Score = 25.4 bits (57), Expect = 2.4
Identities = 8/13 (61%), Positives = 8/13 (61%)
Query: 134 VCQCAEGYKGQRC 146
CQC GY G RC
Sbjct: 1 KCQCPPGYTGPRC 13
>gnl|CDD|143286 cd05878, Ig_Aggrecan_like, Immunoglobulin (Ig)-like domain of the
aggrecan-like chondroitin sulfate proteoglycan core
protein (CSPG). Ig_Aggrecan_like: immunoglobulin
(Ig)-like domain of the aggrecan-like chondroitin
sulfate proteoglycan core protein (CSPG)s. Included in
this group are the Ig domains of other CSPGs: 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. Members
of the vertebrate HPLN (hyaluronan/HA and proteoglycan
binding link) protein family are physically linked
adjacent to CSPG genes.
Length = 110
Score = 26.9 bits (60), Expect = 2.9
Identities = 9/17 (52%), Positives = 13/17 (76%)
Query: 67 TLIITRIRSEDAGRYEC 83
+L I+R+RS D+G Y C
Sbjct: 73 SLEISRLRSSDSGVYRC 89
>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 = 26.4 bits (58), Expect = 3.1
Identities = 16/58 (27%), Positives = 30/58 (51%), Gaps = 5/58 (8%)
Query: 26 QSLRLVCRCKGNPLPAVSWFKDNVEITTNKRLKIQFKKKRSTLIITRIRSEDAGRYEC 83
L+L CR + + + +++W KD V++ N R +I ++ + I D+G Y C
Sbjct: 10 DLLQLRCRLR-DDVQSINWTKDGVQLGENNRTRITGEE----VQIKDAVPRDSGLYAC 62
>gnl|CDD|143228 cd05751, Ig1_LILRB1_like, First immunoglobulin (Ig)-like domain
found in Leukocyte Ig-like receptors (LILR)B1 (also
known as LIR-1) and similar proteins. Ig1_LILRB1_like:
domain similar to the first immunoglobulin (Ig)-like
domain found in Leukocyte Ig-like receptors (LILR)B1
(also known as LIR-1). This group includes, LILRA5
(LIR9), an activating natural cytotoxicity receptor
NKp46, and the immune-type receptor glycoprotein VI
(GPVI). LILRs are a family of immunoreceptors expressed
on expressed on T and B cells, on monocytes, dendritic
cells, and subgroups of natural killer (NK) cells. The
human LILR family contains nine proteins (LILRA1-3,and
5, and LILRB1-5). From functional assays, and as the
cytoplasmic domains of various LILRs, for example
LILRB1 (LIR-1), LILRB2 (LIR-2), and LILRB3 (LIR-3)
contain immunoreceptor tyrosine-based inhibitory motifs
(ITIMs) it is thought that LIR proteins are inhibitory
receptors. Of the eight LIR family proteins, only
LIR-1(LILRB1), and LIR-2 (LILRB2), show detectable
binding to class I MHC molecules; ligands for the other
members have yet to be determined. The extracellular
portions of the different LIR proteins contain
different numbers of Ig-like domains for example, four
in the case of LILRB1 (LIR-1), and LILRB2 (LIR-2), and
two in the case of LILRB4 (LIR-5). The activating
natural cytotoxicity receptor NKp46. is expressed in
natural killer cells, and is organized as an
extracellular portion having two Ig-like extracellular
domains, a transmembrane domain, and a small
cytoplasmic portion. GPVI, which also contains two
Ig-like domains, participates in the processes of
collagen-mediated platelet activation and arterial
thrombus formation.
Length = 91
Score = 26.3 bits (58), Expect = 3.7
Identities = 16/52 (30%), Positives = 25/52 (48%), Gaps = 2/52 (3%)
Query: 33 RCKGNPLPAVSWFKDNVEITTNKRLKIQFKKKRSTLIITRIRSEDAGRYECR 84
RC+G P AV ++ E +T K + ++ I ++ E AGRY C
Sbjct: 22 RCQG-PYGAV-EYRLYREGSTFAVKKPPEPQNKAKFFIPSMKREHAGRYRCY 71
>gnl|CDD|219677 pfam07974, EGF_2, EGF-like domain. This family contains EGF
domains found in a variety of extracellular proteins.
Length = 31
Score = 25.1 bits (55), Expect = 3.8
Identities = 11/35 (31%), Positives = 13/35 (37%), Gaps = 4/35 (11%)
Query: 112 CPLDSYCLNGGSCTYYDTVGELVCQCAEGYKGQRC 146
C C G+C G C C GY+G C
Sbjct: 1 CSASGICNGRGTC--VRPCG--KCVCDSGYQGATC 31
>gnl|CDD|203711 pfam07654, C1-set, Immunoglobulin C1-set domain.
Length = 83
Score = 26.1 bits (58), Expect = 3.9
Identities = 19/72 (26%), Positives = 25/72 (34%), Gaps = 11/72 (15%)
Query: 21 SVKLRQSLRLVCRCKG-NPLPA-VSWFKDNVEITTNKRLKIQFKKK------RSTLIITR 72
+L + LVC G P V+W K+ E+T + S L T
Sbjct: 4 PEELGKPNTLVCLVTGFYPPDITVTWLKNGQEVTEGVESTEELPNGDGTYQLSSYLTFT- 62
Query: 73 IRSEDAGRYECR 84
S D Y CR
Sbjct: 63 PESGD--EYTCR 72
>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 = 26.7 bits (59), Expect = 4.3
Identities = 19/81 (23%), Positives = 35/81 (43%), Gaps = 17/81 (20%)
Query: 20 VSVKLRQSLRLVCRCKGN-PLPAVSWFK--------------DNVEITTNKRLKIQFKK- 63
VSV++ + + L CR + + + W+K T R + F+K
Sbjct: 9 VSVQVGEEVTLNCRYETSWTNYYIFWYKQLPSGEMTFLIRQKSIYGNATKGRYSVNFQKA 68
Query: 64 -KRSTLIITRIRSEDAGRYEC 83
K +L I+ ++ ED+ +Y C
Sbjct: 69 QKSISLTISALQLEDSAKYFC 89
>gnl|CDD|205157 pfam12947, EGF_3, EGF domain. This family includes a variety of
EGF-like domain homologues. This family includes the
C-terminal domain of the malaria parasite MSP1 protein.
Length = 36
Score = 24.4 bits (54), Expect = 5.7
Identities = 9/21 (42%), Positives = 10/21 (47%), Gaps = 2/21 (9%)
Query: 123 SCTYYDTVGELVCQCAEGYKG 143
+CT T G C C GY G
Sbjct: 13 TCTN--TGGSFTCTCKSGYTG 31
>gnl|CDD|143229 cd05752, Ig1_FcgammaR_like, Frst immunoglobulin (Ig)-like domain
of Fcgamma-receptors (FcgammaRs) and similar proteins.
Ig1_FcgammaR_like: domain similar to the first
immunoglobulin (Ig)-like domain of Fcgamma-receptors
(FcgammaRs). Interactions between IgG and FcgammaR are
important to the initiation of cellular and humoral
response. IgG binding to FcgammaR leads to a cascade of
signals and ultimately to functions such as
antibody-dependent-cellular-cytotoxicity (ADCC),
endocytosis, phagocytosis, release of inflammatory
mediators, etc. FcgammaR has two Ig-like domains. This
group also contains FcepsilonRI, which binds IgE with
high affinity.
Length = 78
Score = 25.0 bits (55), Expect = 9.8
Identities = 13/58 (22%), Positives = 22/58 (37%), Gaps = 14/58 (24%)
Query: 33 RCKGNPLPAVS---WFKDNVEITTNKRLKIQFKKKRSTLIITRIRSEDAGRYECRGTG 87
C G P + W+ + K L+ ++ I R + D+G Y C+ G
Sbjct: 21 TCNGFNSPEQNSTQWYHNG------KLLETT----TNSYRI-RAANNDSGEYRCQTQG 67
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 0.137 0.427
Gapped
Lambda K H
0.267 0.0844 0.140
Matrix: BLOSUM62
Gap Penalties: Existence: 11, Extension: 1
Number of Sequences: 44354
Number of Hits to DB: 8,518,283
Number of extensions: 734009
Number of successful extensions: 670
Number of sequences better than 10.0: 1
Number of HSP's gapped: 627
Number of HSP's successfully gapped: 116
Length of query: 176
Length of database: 10,937,602
Length adjustment: 90
Effective length of query: 86
Effective length of database: 6,945,742
Effective search space: 597333812
Effective search space used: 597333812
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 (21.9 bits)
S2: 56 (25.1 bits)