RPS-BLAST 2.2.26 [Sep-21-2011]
Database: CDD.v3.10
44,354 sequences; 10,937,602 total letters
Searching..................................................done
Query= psy1595
(147 letters)
>gnl|CDD|191810 pfam07679, I-set, Immunoglobulin I-set domain.
Length = 90
Score = 48.8 bits (117), Expect = 1e-08
Identities = 21/84 (25%), Positives = 37/84 (44%), Gaps = 11/84 (13%)
Query: 58 HFGSSLNPTDIKEGDDVYFECQVSANPRAHRLLWFHNDKEI----HHNVT--GGIILSNI 111
F +++EG+ F C V+ +P + WF + + + VT GG
Sbjct: 2 KFTQKPKDVEVQEGESARFTCTVTGDP-DPTVSWFKDGQPLRSSDRFKVTYEGG----TY 56
Query: 112 SLVLQKVSRQSAGEYSCMAINTEG 135
+L + V G+Y+C+A N+ G
Sbjct: 57 TLTISNVQPDDEGKYTCVATNSAG 80
>gnl|CDD|197706 smart00408, IGc2, Immunoglobulin C-2 Type.
Length = 63
Score = 47.0 bits (112), Expect = 3e-08
Identities = 18/66 (27%), Positives = 31/66 (46%), Gaps = 3/66 (4%)
Query: 70 EGDDVYFECQVSANPRAHRLLWFHNDKEIHHNVTGGIILSNISLVLQKVSRQSAGEYSCM 129
EG V C NP + W + K + + + S +L ++ VS + +G Y+C+
Sbjct: 1 EGQSVTLTCPAEGNPVP-NITWLKDGKPLPES--NRFVASGSTLTIKSVSLEDSGLYTCV 57
Query: 130 AINTEG 135
A N+ G
Sbjct: 58 AENSAG 63
>gnl|CDD|206066 pfam13895, Ig_2, Immunoglobulin domain. This domain contains
immunoglobulin-like domains.
Length = 80
Score = 47.4 bits (113), Expect = 3e-08
Identities = 22/85 (25%), Positives = 37/85 (43%), Gaps = 9/85 (10%)
Query: 62 SLNPTDIKEGDDVYFECQVSANPRAHRLLWFHNDKEIHHNVTGGIILSNISLVLQKVSRQ 121
+ +PT + EG+DV C NP W+ + + + + + VS +
Sbjct: 5 TPSPTVVFEGEDVTLTCSAPGNPPP-NYTWYKDGVPL--SSSQNGFFTPN------VSAE 55
Query: 122 SAGEYSCMAINTEGRGASQPIILAV 146
+G Y+C+A N G S P+ L V
Sbjct: 56 DSGTYTCVASNGGGGKTSNPVTLTV 80
>gnl|CDD|214653 smart00410, IG_like, Immunoglobulin like. IG domains that cannot
be classified into one of IGv1, IGc1, IGc2, IG.
Length = 85
Score = 44.4 bits (105), Expect = 7e-07
Identities = 16/70 (22%), Positives = 32/70 (45%), Gaps = 4/70 (5%)
Query: 69 KEGDDVYFECQVSANPRAHRLLWFHNDKEIHHNVTGGIILSNI---SLVLQKVSRQSAGE 125
KEG+ V C+ S +P + W+ ++ + + +L + V+ + +G
Sbjct: 7 KEGESVTLSCEASGSPPPE-VTWYKQGGKLLAESGRFSVSRSGSTSTLTISNVTPEDSGT 65
Query: 126 YSCMAINTEG 135
Y+C A N+ G
Sbjct: 66 YTCAATNSSG 75
>gnl|CDD|214652 smart00409, IG, Immunoglobulin.
Length = 85
Score = 44.4 bits (105), Expect = 7e-07
Identities = 16/70 (22%), Positives = 32/70 (45%), Gaps = 4/70 (5%)
Query: 69 KEGDDVYFECQVSANPRAHRLLWFHNDKEIHHNVTGGIILSNI---SLVLQKVSRQSAGE 125
KEG+ V C+ S +P + W+ ++ + + +L + V+ + +G
Sbjct: 7 KEGESVTLSCEASGSPPPE-VTWYKQGGKLLAESGRFSVSRSGSTSTLTISNVTPEDSGT 65
Query: 126 YSCMAINTEG 135
Y+C A N+ G
Sbjct: 66 YTCAATNSSG 75
>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 = 40.9 bits (95), Expect = 1e-05
Identities = 17/68 (25%), Positives = 30/68 (44%), Gaps = 7/68 (10%)
Query: 74 VYFECQVSANPRAHRLLWFHNDKEIHHNV------TGGIILSNISLVLQKVSRQSAGEYS 127
V C S P + W N K + +V + G + +L + V+ + +G Y+
Sbjct: 1 VTLTCLASGPPPPT-ITWLKNGKPLPSSVLTRVRSSRGTSSGSSTLTISNVTLEDSGTYT 59
Query: 128 CMAINTEG 135
C+A N+ G
Sbjct: 60 CVASNSAG 67
>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 = 37.1 bits (86), Expect = 2e-04
Identities = 16/63 (25%), Positives = 28/63 (44%), Gaps = 4/63 (6%)
Query: 71 GDDVYFECQVSANPRAHRLLWFHNDKEIHHNVTGGIILSNI---SLVLQKVSRQSAGEYS 127
G V C VS P+ WF K + + T G + + +L + V+ + +G Y+
Sbjct: 1 GSSVTLTCSVSGPPQVDVT-WFKEGKGLEESTTVGTDENRVSSITLTISNVTPEDSGTYT 59
Query: 128 CMA 130
C+
Sbjct: 60 CVV 62
>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 = 36.4 bits (84), Expect = 5e-04
Identities = 22/71 (30%), Positives = 34/71 (47%), Gaps = 5/71 (7%)
Query: 66 TDIKEGDDVYFECQVSANPR-AHRLLWFHNDKEIHHNVTGGIILSNISLVLQKVSRQSAG 124
T+ G + +EC+ S NPR A+R W N + + I + L + K+S +G
Sbjct: 9 TEADIGSSLRWECKASGNPRPAYR--WLKNGQPL--ASENRIEVEAGDLRITKLSLSDSG 64
Query: 125 EYSCMAINTEG 135
Y C+A N G
Sbjct: 65 MYQCVAENKHG 75
>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 = 35.9 bits (83), Expect = 8e-04
Identities = 21/69 (30%), Positives = 33/69 (47%), Gaps = 2/69 (2%)
Query: 71 GDDVYFECQVSANPRAHRLLWFHNDKEIHHNVTGGIILSNISLVLQKVSRQSAGEYSCMA 130
G DV EC+ A P+ + W E+ N + I + SL + V++ G+Y+C A
Sbjct: 1 GGDVIIECKPKAAPKP-TISWSKGT-ELLTNSSRICIWPDGSLEILNVTKSDEGKYTCFA 58
Query: 131 INTEGRGAS 139
N G+ S
Sbjct: 59 ENFFGKANS 67
>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 = 35.8 bits (83), Expect = 0.001
Identities = 17/76 (22%), Positives = 33/76 (43%), Gaps = 7/76 (9%)
Query: 69 KEGDDVYFECQVSANPRAHRLLWFHNDKEIHHN--VTGGIILSNISLVLQKVSRQSAGEY 126
EG+ V+ EC +N A ++W + ++++ L+++ VS AG Y
Sbjct: 9 VEGNSVFLECSPKSN-LA-SVVWLFQGGPLQRKEEPEERLLVTEDGLLIRSVSPADAGVY 66
Query: 127 SCMAINTEGRGASQPI 142
+C + G Q +
Sbjct: 67 TCQS---VEHGFKQTL 79
>gnl|CDD|222457 pfam13927, Ig_3, Immunoglobulin domain. This family contains
immunoglobulin-like domains.
Length = 74
Score = 35.0 bits (80), Expect = 0.002
Identities = 18/80 (22%), Positives = 30/80 (37%), Gaps = 7/80 (8%)
Query: 53 PRVVIHFGSSLNPTDIKEGDDVYFECQVSANPRAHRLLWFHNDKEIHHNVTGGIILSNIS 112
P + + S + G V C P + W+ N + G S +
Sbjct: 2 PVITVSPSPS-----VTSGGGVTLTCSAEGGPPPPTISWYRNGSISGGSGGLGSSGS--T 54
Query: 113 LVLQKVSRQSAGEYSCMAIN 132
L L V+ + +G Y+C+A N
Sbjct: 55 LTLSSVTSEDSGTYTCVASN 74
>gnl|CDD|143300 cd05892, Ig_Myotilin_C, C-terminal immunoglobulin (Ig)-like domain
of myotilin. Ig_Myotilin_C: C-terminal immunoglobulin
(Ig)-like domain of myotilin. Mytolin belongs to the
palladin-myotilin-myopalladin family. Proteins belonging
to the latter family contain multiple Ig-like domains
and function as scaffolds, modulating actin
cytoskeleton. Myotilin is most abundant in skeletal and
cardiac muscle, and is involved in maintaining sarcomere
integrity. It binds to alpha-actinin, filamin and actin.
Mutations in myotilin lead to muscle disorders.
Length = 75
Score = 34.9 bits (80), Expect = 0.002
Identities = 21/67 (31%), Positives = 38/67 (56%), Gaps = 7/67 (10%)
Query: 74 VYFECQVSANPRAHRLLWFHNDKEIHHNVTGGIIL-----SNISLVLQKVSRQSAGEYSC 128
V ECQ+SA P ++ W N++ + +N T I L ++L+++ V+++ AG Y+
Sbjct: 1 VKLECQISAIPPP-KIFWKRNNEMVQYN-TDRISLYQDNSGRVTLLIKNVNKKDAGWYTV 58
Query: 129 MAINTEG 135
A+N G
Sbjct: 59 SAVNEAG 65
>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 = 34.4 bits (79), Expect = 0.003
Identities = 22/67 (32%), Positives = 36/67 (53%), Gaps = 7/67 (10%)
Query: 74 VYFECQVSANPRAHRLLWFHNDKEIHHNVTGGIIL-----SNISLVLQKVSRQSAGEYSC 128
V EC+VSA P ++ W N++ + +N T I L I L++Q +++ AG Y+
Sbjct: 1 VRLECRVSAIPPP-QIFWKKNNEMLTYN-TDRISLYQDNCGRICLLIQNANKEDAGWYTV 58
Query: 129 MAINTEG 135
A+N G
Sbjct: 59 SAVNEAG 65
>gnl|CDD|143258 cd05850, Ig1_Contactin-2, First Ig domain of contactin-2.
Ig1_Contactin-2: First Ig domain of the neural cell
adhesion molecule contactin-2-like. Contactins are
comprised of six Ig domains followed by four fibronectin
type III (FnIII) domains anchored to the membrane by
glycosylphosphatidylinositol. Contactin-2 (TAG-1,
axonin-1) facilitates cell adhesion by homophilic
binding between molecules in apposed membranes. It may
play a part in the neuronal processes of neurite
outgrowth, axon guidance and fasciculation, and neuronal
migration. The first four Ig domains form the
intermolecular binding fragment, which arranges as a
compact U-shaped module by contacts between IG domains 1
and 4, and domains 2 and 3. The different contactins
show different expression patterns in the central
nervous system. During development and in adulthood,
contactin-2 is transiently expressed in subsets of
central and peripheral neurons. Contactin-2 is also
expressed in retinal amacrine cells in the developing
chick retina, corresponding to the period of formation
and maturation of AC processes.
Length = 94
Score = 34.5 bits (79), Expect = 0.004
Identities = 27/92 (29%), Positives = 38/92 (41%), Gaps = 17/92 (18%)
Query: 61 SSLNPTDIKEGDDVYFECQVSANPRA-HRLLWFHNDKEI-------HHNVTGGIILSNIS 112
S L P E V C+ A+P A +R W N EI + V G ++++N
Sbjct: 10 SLLFPEGSPEEK-VTLGCRARASPPATYR--WKMNGTEIKFAPESRYTLVAGNLVINN-- 64
Query: 113 LVLQKVSRQSAGEYSCMAINTEGRGASQPIIL 144
+ AG Y C+AIN G S+ L
Sbjct: 65 ----PQKARDAGSYQCLAINRCGTVVSREANL 92
>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 = 33.9 bits (78), Expect = 0.005
Identities = 20/89 (22%), Positives = 39/89 (43%), Gaps = 8/89 (8%)
Query: 63 LNPTDIK--EGDDVYFECQVSANPRAH---RLLWFHNDKEIHHNVTGGIILSNISLVLQK 117
+ P+D + G+ EC PR H + W + + ++ + I+ + +L++ +
Sbjct: 1 VEPSDTQVAVGEMAVLECS---PPRGHPEPTVSWRKDGQPLNLDNERVRIVDDGNLLIAE 57
Query: 118 VSRQSAGEYSCMAINTEGRGASQPIILAV 146
+ G Y C+A N G S L+V
Sbjct: 58 ARKSDEGTYKCVATNMVGERESAAARLSV 86
>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 = 34.1 bits (78), Expect = 0.006
Identities = 23/82 (28%), Positives = 40/82 (48%), Gaps = 5/82 (6%)
Query: 68 IKEGDDVYFECQVSANPRAHRLLWFHNDKEIHHNVTGGIILSN---ISLVLQKVSRQSAG 124
I EG + C V NP ++WF ND++I + + L SL ++ V+ + +G
Sbjct: 13 IMEGKTLNLTCTVFGNPDP-EVIWFKNDQDIELSEHYSVKLEQGKYASLTIKGVTSEDSG 71
Query: 125 EYSCMAINTEGRGASQPIILAV 146
+YS N G G + + ++V
Sbjct: 72 KYSINVKNKYG-GETVDVTVSV 92
>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 = 33.7 bits (77), Expect = 0.007
Identities = 22/75 (29%), Positives = 37/75 (49%), Gaps = 14/75 (18%)
Query: 71 GDDVYFECQVSANPRAHRLLWFHNDKEIH---------HNVTGGIILSNIS-LVLQKVSR 120
G+ F C V+ P + W +K++H ++V G ++++NI LV+
Sbjct: 1 GETASFHCDVTGRPPP-EITW---EKQVHGKENLIMRPNHVRGNVVVTNIGQLVIYNAQP 56
Query: 121 QSAGEYSCMAINTEG 135
Q AG Y+C A N+ G
Sbjct: 57 QDAGLYTCTARNSGG 71
>gnl|CDD|143317 cd07693, Ig1_Robo, First immunoglobulin (Ig)-like domain in Robo
(roundabout) receptors and similar proteins. Ig1_Robo:
domain similar to the first immunoglobulin (Ig)-like
domain in Robo (roundabout) receptors. Robo receptors
play a role in the development of the central nervous
system (CNS), and are receptors of Slit protein. Slit is
a repellant secreted by the neural cells in the midline.
Slit acts through Robo to prevent most neurons from
crossing the midline from either side. Three mammalian
Robo homologs (robo1, -2, and -3), and three mammalian
Slit homologs (Slit-1,-2, -3), have been identified.
Commissural axons, which cross the midline, express low
levels of Robo; longitudinal axons, which avoid the
midline, express high levels of Robo. robo1, -2, and -3
are expressed by commissural neurons in the vertebrate
spinal cord and Slits 1, -2, -3 are expressed at the
ventral midline. Robo-3 is a divergent member of the
Robo family which instead of being a positive regulator
of slit responsiveness, antagonizes slit responsiveness
in precrossing axons. The Slit-Robo interaction is
mediated by the second leucine-rich repeat (LRR) domain
of Slit and the two N-terminal Ig domains of Robo, Ig1
and Ig2. The primary Robo binding site for Slit2 has
been shown by surface plasmon resonance experiments and
mutational analysis to be is the Ig1 domain, while the
Ig2 domain has been proposed to harbor a weak secondary
binding site.
Length = 100
Score = 32.9 bits (75), Expect = 0.014
Identities = 25/99 (25%), Positives = 37/99 (37%), Gaps = 18/99 (18%)
Query: 53 PRVVIHFGSSLNPTD--IKEGDDVYFECQVSANPRAHRLLWFHN---------DKEIHHN 101
PR+V H P+D + +GD C+ P + W N D H
Sbjct: 2 PRIVEH------PSDLIVSKGDPATLNCKAEGRPTP-TIQWLKNGQPLETDKDDPRSHRI 54
Query: 102 VTGGIILSNISLVLQKVSRQSAGEYSCMAINTEGRGASQ 140
V L + +V + R G Y C+A N+ G S+
Sbjct: 55 VLPSGSLFFLRVVHGRKGRSDEGVYVCVAHNSLGEAVSR 93
>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 = 31.3 bits (71), Expect = 0.040
Identities = 16/64 (25%), Positives = 27/64 (42%), Gaps = 5/64 (7%)
Query: 78 CQVSANPRAHRLLWFHNDKEIHHNVTGGIIL-----SNISLVLQKVSRQSAGEYSCMAIN 132
C+ ++ + R WF + KE++ I N L + K +GEY+C+ N
Sbjct: 5 CEATSEYPSLRFKWFKDGKELNRKNKPRNIKIRNKKKNSELQINKAKLADSGEYTCVVEN 64
Query: 133 TEGR 136
G
Sbjct: 65 ILGN 68
>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 = 31.4 bits (71), Expect = 0.050
Identities = 19/68 (27%), Positives = 29/68 (42%), Gaps = 4/68 (5%)
Query: 71 GDDVYFECQVSANPRAHRLLWFHNDKEIHHN-VTGGIIL--SNISLVLQKVSRQSAGEYS 127
+ V F C + NP + W N KE GG + + SL+++ V G Y+
Sbjct: 9 ANTVKFRCPAAGNPTP-TMRWLKNGKEFKQEHRIGGYKVRNQHWSLIMESVVPSDKGNYT 67
Query: 128 CMAINTEG 135
C+ N G
Sbjct: 68 CVVENEYG 75
>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 = 31.2 bits (71), Expect = 0.058
Identities = 19/77 (24%), Positives = 33/77 (42%), Gaps = 9/77 (11%)
Query: 70 EGDDVYFECQVSANPRAHRLLW-FHNDKEIHHNVTGG---IILSNISLVLQKVSRQSAGE 125
E + + EC + +P+A + W F + +I + L+L+ + R AG
Sbjct: 10 ENNSTFLEC-LPKSPQA-SVKWLFQRGGDQRKEEVKTEERLIHTERGLLLRSLQRSDAGV 67
Query: 126 YSCMAINTEGRGASQPI 142
Y+C A E SQ +
Sbjct: 68 YTCTA--VE-HSFSQTL 81
>gnl|CDD|143217 cd05740, Ig_CEACAM_D4, Fourth immunoglobulin (Ig)-like domain of
carcinoembryonic antigen (CEA) related cell adhesion
molecule (CEACAM). Ig_CEACAM_D4: immunoglobulin
(Ig)-like domain 4 in carcinoembryonic antigen (CEA)
related cell adhesion molecule (CEACAM) protein
subfamily. The CEA family is a group of anchored or
secreted glycoproteins, expressed by epithelial cells,
leukocytes, endothelial cells and placenta. The CEA
family is divided into the CEACAM and pregnancy-specific
glycoprotein (PSG) subfamilies. This group represents
the CEACAM subfamily. CEACAM1 has many important
cellular functions, it is a cell adhesion molecule, and
a signaling molecule that regulates the growth of tumor
cells, it is an angiogenic factor, and is a receptor for
bacterial and viral pathogens, including mouse hepatitis
virus (MHV). In mice, four isoforms of CEACAM1 generated
by alternative splicing have either two [D1, D4] or four
[D1-D4] Ig-like domains on the cell surface. This family
corresponds to the D4 Ig-like domain.
Length = 91
Score = 30.7 bits (69), Expect = 0.074
Identities = 26/93 (27%), Positives = 38/93 (40%), Gaps = 7/93 (7%)
Query: 56 VIHFGSSLNPTDIKEGDDVYFECQVSANPRAHRLLWFHNDKEIHHNVTGGIILS--NISL 113
VI+ +S+ ++ V C A +A + W +N + V + LS N +L
Sbjct: 3 VINSNNSVGNQPPEDNQPVTLTC--EAEGQATYIWWVNNGSLL---VPPRLQLSNDNRTL 57
Query: 114 VLQKVSRQSAGEYSCMAINTEGRGASQPIILAV 146
V+R G Y C A N S P IL V
Sbjct: 58 TFNNVTRSDTGHYQCEASNEVSNMTSDPYILNV 90
>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 = 30.4 bits (69), Expect = 0.084
Identities = 19/69 (27%), Positives = 31/69 (44%), Gaps = 4/69 (5%)
Query: 71 GDDVYFECQVSANPRAHRLLWFHNDKEI-HHNVTGGIIL--SNISLVLQKVSRQSAGEYS 127
G V +C S NPR + W + K + GG + +L+L+ V +G+Y+
Sbjct: 9 GSTVRLKCPASGNPRP-TITWLKDGKPFKKEHRIGGYKVRKKKWTLILESVVPSDSGKYT 67
Query: 128 CMAINTEGR 136
C+ N G
Sbjct: 68 CIVENKYGS 76
>gnl|CDD|143266 cd05858, Ig3_FGFR-2, Third immunoglobulin (Ig)-like domain of
fibroblast growth factor receptor 2 (FGFR2).
Ig3_FGFR-2-like; domain similar to the third
immunoglobulin (Ig)-like domain of human fibroblast
growth factor receptor 2 (FGFR2). Fibroblast growth
factors (FGFs) participate in morphogenesis,
development, angiogenesis, and wound healing. These
FGF-stimulated processes are mediated by four FGFR
tyrosine kinases (FGRF1-4). FGFRs are comprised of an
extracellular portion consisting of three Ig-like
domains, a transmembrane helix, and a cytoplasmic
portion having protein tyrosine kinase activity. The
highly conserved Ig-like domains 2 and 3, and the linker
region between D2 and D3 define a general binding site
for FGFs. FGFR2 is required for male sex determination.
Length = 90
Score = 30.3 bits (68), Expect = 0.10
Identities = 20/79 (25%), Positives = 33/79 (41%), Gaps = 14/79 (17%)
Query: 71 GDDVYFECQVSANPRAHRLLWFHNDKEIHHNVTGGIILSNI--------------SLVLQ 116
G V F C+V ++ + H H +K G+ + L L+
Sbjct: 1 GSTVEFVCKVYSDAQPHIQWLKHVEKNGSKYGPDGLPYVTVLKTAGVNTTDKEMEVLYLR 60
Query: 117 KVSRQSAGEYSCMAINTEG 135
V+ + AGEY+C+A N+ G
Sbjct: 61 NVTFEDAGEYTCLAGNSIG 79
>gnl|CDD|143215 cd05738, Ig2_RPTP_IIa_LAR_like, Second immunoglobulin (Ig)-like
domain of the receptor protein tyrosine phosphatase
(RPTP)-F, also known as LAR. Ig2_RPTP_IIa_LAR_like:
domain similar to the second immunoglobulin (Ig)-like
domain found in the receptor protein tyrosine
phosphatase (RPTP)-F, also known as LAR. LAR belongs to
the RPTP type IIa subfamily. Members of this subfamily
are cell adhesion molecule-like proteins involved in
central nervous system (CNS) development. They have
large extracellular portions, comprised of multiple
Ig-like domains and two to nine fibronectin type III
(FNIII) domains, and a cytoplasmic portion having two
tandem phosphatase domains.
Length = 74
Score = 30.0 bits (67), Expect = 0.10
Identities = 20/71 (28%), Positives = 30/71 (42%), Gaps = 2/71 (2%)
Query: 78 CQVSANPRAHRLLWFHNDKEIHHNVTGGIILSNISLVLQKVSRQS-AGEYSCMAINTEGR 136
C S NP + WF + + G I + + S +S G+Y C+A N+ G
Sbjct: 5 CAASGNPDPE-ITWFKDFLPVDTTSNGRIKQLRSGALQIENSEESDQGKYECVATNSAGT 63
Query: 137 GASQPIILAVK 147
S P L V+
Sbjct: 64 RYSAPANLYVR 74
>gnl|CDD|143175 cd04974, Ig3_FGFR, Third immunoglobulin (Ig)-like domain of
fibroblast growth factor receptor (FGFR). Ig3_FGFR:
third immunoglobulin (Ig)-like domain of fibroblast
growth factor receptor (FGFR). Fibroblast growth factors
(FGFs) participate in morphogenesis, development,
angiogenesis, and wound healing. These FGF-stimulated
processes are mediated by four FGFR tyrosine kinases
(FGRF1-4). FGFRs are comprised of an extracellular
portion consisting of three Ig-like domains, a
transmembrane helix, and a cytoplasmic portion having
protein tyrosine kinase activity. The highly conserved
Ig-like domains 2 and 3, and the linker region between
D2 and D3 define a general binding site for FGFs.
Length = 90
Score = 30.1 bits (68), Expect = 0.13
Identities = 24/82 (29%), Positives = 38/82 (46%), Gaps = 20/82 (24%)
Query: 71 GDDVYFECQVSANPRAHRLLWF-HNDKEIHHNVTGGIILSNIS----------------L 113
G DV F C+V ++ + H + W H E++ + G L ++ L
Sbjct: 1 GSDVEFHCKVYSDAQPH-IQWLKHV--EVNGSKYGPDGLPYVTVLKVAGINTTDNESEVL 57
Query: 114 VLQKVSRQSAGEYSCMAINTEG 135
L+ VS AGEY+C+A N+ G
Sbjct: 58 YLRNVSFDDAGEYTCLAGNSIG 79
>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 = 30.0 bits (68), Expect = 0.13
Identities = 25/87 (28%), Positives = 38/87 (43%), Gaps = 14/87 (16%)
Query: 62 SLNP--TDIKEGDDVYFECQVSANPRAHRLLWFHNDKEIHHNVTGGIILSNISLVLQKVS 119
SL+P T I +G+ V C +P + W+HN K + + S ++ +
Sbjct: 4 SLDPPWTTIFQGEKVTLTCNGFNSPEQNSTQWYHNGKLLET--------TTNSYRIRAAN 55
Query: 120 RQSAGEYSCMAINTEGRGASQPIILAV 146
S GEY C T+G S P+ L V
Sbjct: 56 NDS-GEYRC---QTQGSSLSDPVHLEV 78
>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 = 30.0 bits (67), Expect = 0.13
Identities = 19/64 (29%), Positives = 25/64 (39%), Gaps = 6/64 (9%)
Query: 78 CQVSANPRAHRLLWFHNDKEI-HHNVTGGIIL-----SNISLVLQKVSRQSAGEYSCMAI 131
C+ + + R WF N KEI N I + L + K S GEY CM
Sbjct: 5 CETVSEYPSLRFKWFKNGKEIGAKNKPDNKIKIRKKKKSSELQISKASLADNGEYKCMVS 64
Query: 132 NTEG 135
+ G
Sbjct: 65 SKLG 68
>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 = 29.8 bits (67), Expect = 0.15
Identities = 11/30 (36%), Positives = 15/30 (50%)
Query: 112 SLVLQKVSRQSAGEYSCMAINTEGRGASQP 141
+L ++ V G Y+C AINT G P
Sbjct: 43 TLTIRDVKESDQGAYTCEAINTRGMVFGIP 72
>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 = 29.8 bits (67), Expect = 0.16
Identities = 16/65 (24%), Positives = 27/65 (41%), Gaps = 4/65 (6%)
Query: 68 IKEGDDVYFECQVSANPRAHRLLWFHNDKEIHHNVTGGIILSNISLVLQKVSRQSAGEYS 127
++ G DV F C+ + A+ L+W + + + N L ++ V AG Y
Sbjct: 13 VRPGADVSFICRAKSKSPAYTLVW----TRVGGGLPSRAMDFNGILTIRNVQLSDAGTYV 68
Query: 128 CMAIN 132
C N
Sbjct: 69 CTGSN 73
>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 = 29.7 bits (67), Expect = 0.17
Identities = 23/83 (27%), Positives = 37/83 (44%), Gaps = 17/83 (20%)
Query: 61 SSLNPTDIKEGDDVYFECQVSANPRA-HRLLWFHNDKEI------HHNVTGG-IILSNIS 112
++ P + EG V C+ +P +R W N EI +++ GG +++SN S
Sbjct: 10 DTIFPEESDEGK-VSLNCRARGSPPPTYR--WLMNGTEIDDEPDSRYSLVGGNLVISNPS 66
Query: 113 LVLQKVSRQSAGEYSCMAINTEG 135
+ AG Y C+A N G
Sbjct: 67 KA------KDAGRYQCLASNIVG 83
>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 = 29.5 bits (66), Expect = 0.18
Identities = 18/70 (25%), Positives = 32/70 (45%), Gaps = 10/70 (14%)
Query: 70 EGDDVYFECQVSANPRAHRLLWFHNDKEI----HHNVTGGIILSNISLVLQKVSRQSAGE 125
EG V F C+ P+ + W ++ H ++LS+ +L + +V+ G+
Sbjct: 1 EGQTVDFLCEAQGYPQP-VIAWTKGGSQLSVDRRH-----LVLSSGTLRISRVALHDQGQ 54
Query: 126 YSCMAINTEG 135
Y C A+N G
Sbjct: 55 YECQAVNIVG 64
>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 = 29.3 bits (66), Expect = 0.20
Identities = 20/62 (32%), Positives = 30/62 (48%), Gaps = 3/62 (4%)
Query: 74 VYFECQVSANPRAHRLLWFHNDKEIHHNVTGGIILSNISLVLQKVSRQSAGEYSCMAINT 133
V F+C+V +P +LW D E+ IL + SL ++ V+ G Y+C A N
Sbjct: 1 VEFQCEVGGDP-VPTVLWRKEDGELPKGRAE--ILDDKSLKIRNVTAGDEGSYTCEAENM 57
Query: 134 EG 135
G
Sbjct: 58 VG 59
>gnl|CDD|143235 cd05758, Ig5_KIRREL3-like, Fifth immunoglobulin (Ig)-like domain of
Kirrel (kin of irregular chiasm-like) 3 (also known as
Neph2) and similar proteins. Ig5_KIRREL3-like: domain
similar to the fifth immunoglobulin (Ig)-like domain of
Kirrel (kin of irregular chiasm-like) 3 (also known as
Neph2). This protein has five Ig-like domains, one
transmembrane domain, and a cytoplasmic tail. Included
in this group is mammalian Kirrel (Neph1), Kirrel2
(Neph3), and Drosophila RST (irregular chiasm
C-roughest) protein. These proteins contain multiple Ig
domains, have properties of cell adhesion molecules, and
are important in organ development.
Length = 98
Score = 29.7 bits (67), Expect = 0.22
Identities = 18/82 (21%), Positives = 32/82 (39%), Gaps = 13/82 (15%)
Query: 70 EGDDVYFECQVSANPRAHRLLWFHNDKE----------IHHNVTGGIILSNISLVLQKVS 119
GD EC + + P R++W + E + + + G +LS +L +
Sbjct: 15 LGDKGRVECFIFSTPPPDRIVWTWKENELESGSSGRYTVETDPSPGGVLS--TLTISNTQ 72
Query: 120 RQS-AGEYSCMAINTEGRGASQ 140
Y+C A N+ G G +
Sbjct: 73 ESDFQTSYNCTAWNSFGSGTAI 94
>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 = 28.5 bits (64), Expect = 0.36
Identities = 11/27 (40%), Positives = 15/27 (55%)
Query: 110 NISLVLQKVSRQSAGEYSCMAINTEGR 136
N +L + VS + GEY C A N+ G
Sbjct: 35 NKTLKIDNVSEEDDGEYRCTASNSLGS 61
>gnl|CDD|143211 cd05734, Ig7_DSCAM, Seventh immunoglobulin (Ig)-like domain of Down
Syndrome Cell Adhesion molecule (DSCAM). Ig7_DSCAM: the
seventh immunoglobulin (Ig)-like domain of Down Syndrome
Cell Adhesion molecule (DSCAM). DSCAM is a cell adhesion
molecule expressed largely in the developing nervous
system. The gene encoding DSCAM is located at human
chromosome 21q22, the locus associated with the mental
retardation phenotype of Down Syndrome. DSCAM is
predicted to be the largest member of the IG
superfamily. It has been demonstrated that DSCAM can
mediate cation-independent homophilic intercellular
adhesion.
Length = 79
Score = 28.4 bits (63), Expect = 0.43
Identities = 23/80 (28%), Positives = 36/80 (45%), Gaps = 8/80 (10%)
Query: 74 VYFECQVSANPRAHRLLWFHNDKEIHHN------VTGGI-ILSNISLVLQKVSRQSAGEY 126
V C P ++W H+ H + G I +LSN SL+++ V + +G Y
Sbjct: 1 VTLNCSAEGYP-PPTIVWKHSKGRGHPQHTHTCCLAGRIQLLSNGSLLIKHVLEEDSGYY 59
Query: 127 SCMAINTEGRGASQPIILAV 146
C N G AS+ ++L V
Sbjct: 60 LCKVSNDVGADASKSMVLTV 79
>gnl|CDD|143236 cd05759, Ig2_KIRREL3-like, Second immunoglobulin (Ig)-like domain
of Kirrel (kin of irregular chiasm-like) 3 (also known
as Neph2). Ig2_KIRREL3-like: domain similar to the
second immunoglobulin (Ig)-like domain of Kirrel (kin
of irregular chiasm-like) 3 (also known as Neph2). This
protein has five Ig-like domains, one transmembrane
domain, and a cytoplasmic tail. Included in this group
is mammalian Kirrel (Neph1), Kirrel2 (Neph3), and
Drosophila RST (irregular chiasm C-roughest) protein.
These proteins contain multiple Ig domains, have
properties of cell adhesion molecules, and are
important in organ development.
Length = 82
Score = 28.6 bits (64), Expect = 0.47
Identities = 12/24 (50%), Positives = 13/24 (54%)
Query: 10 TVSYVPFKPSADDDNSKLTCRAEN 33
TVS +P PS D TCRA N
Sbjct: 44 TVSTLPITPSDHDTGRTFTCRARN 67
>gnl|CDD|143260 cd05852, Ig5_Contactin-1, Fifth Ig domain of contactin-1.
Ig5_Contactin-1: fifth Ig domain of the neural cell
adhesion molecule contactin-1. Contactins are comprised
of six Ig domains followed by four fibronectin type III
(FnIII) domains anchored to the membrane by
glycosylphosphatidylinositol. Contactin-1 is
differentially expressed in tumor tissues and may
through a RhoA mechanism, facilitate invasion and
metastasis of human lung adenocarcinoma.
Length = 73
Score = 28.1 bits (62), Expect = 0.50
Identities = 19/73 (26%), Positives = 33/73 (45%), Gaps = 2/73 (2%)
Query: 71 GDDVYFECQVSANPRAHRLLWFHNDKEIHHNVTGGIILSNISLVLQKVSRQSAGEYSCMA 130
G V EC+ A P+ + W E+ N + I + SL + +++ G Y+C A
Sbjct: 1 GGRVIIECKPKAAPKP-KFSW-SKGTELLVNNSRISIWDDGSLEILNITKLDEGSYTCFA 58
Query: 131 INTEGRGASQPII 143
N G+ S ++
Sbjct: 59 ENNRGKANSTGVL 71
>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 = 28.1 bits (63), Expect = 0.50
Identities = 14/66 (21%), Positives = 22/66 (33%), Gaps = 2/66 (3%)
Query: 71 GDDVYFECQVSANPRAHRLLWFHNDKEIH-HNVTGGIILSNISLVLQKVSRQSAGEYSCM 129
G+ +C+ P+ + W N I + +L+L V Y C
Sbjct: 1 GETGRLDCEAEGIPQP-TITWRLNGVPIEELPPDPRRRVDGGTLILSNVQPNDTAVYQCN 59
Query: 130 AINTEG 135
A N G
Sbjct: 60 ASNVHG 65
>gnl|CDD|143277 cd05869, Ig5_NCAM-1, Fifth immunoglobulin (Ig)-like domain of
Neural Cell Adhesion Molecule NCAM-1 (NCAM).
Ig5_NCAM-1: The fifth immunoglobulin (Ig)-like domain of
Neural Cell Adhesion Molecule NCAM-1 (NCAM). NCAM plays
important roles in the development and regeneration of
the central nervous system, in synaptogenesis and neural
migration. NCAM mediates cell-cell and cell-substratum
recognition and adhesion via homophilic (NCAM-NCAM) and
heterophilic (NCAM-non-NCAM) interactions. NCAM is
expressed as three major isoforms having different
intracellular extensions. The extracellular portion of
NCAM has five N-terminal Ig-like domains and two
fibronectin type III domains. The double zipper adhesion
complex model for NCAM homophilic binding involves Ig1,
Ig2, and Ig3. By this model, Ig1 and Ig2 mediate
dimerization of NCAM molecules situated on the same cell
surface (cis interactions), and Ig3 domains mediate
interactions between NCAM molecules expressed on the
surface of opposing cells (trans interactions), through
binding to the Ig1 and Ig2 domains. The adhesive ability
of NCAM is modulated by the addition of polysialic acid
chains to the fifth Ig-like domain.
Length = 97
Score = 27.6 bits (61), Expect = 1.1
Identities = 25/90 (27%), Positives = 41/90 (45%), Gaps = 9/90 (10%)
Query: 64 NPTDIKEGDDVYFECQVSANPRAHRLLWFHNDKEIHHNVT---GGIILSN----ISLVLQ 116
N T ++ + + C+ S +P + W + + I G I++ + SL L+
Sbjct: 10 NQTAMELEEQITLTCEASGDPIPS-ITWRTSTRNISSEEKTLDGHIVVRSHARVSSLTLK 68
Query: 117 KVSRQSAGEYSCMAINTEGRGASQPIILAV 146
+ AGEY C A NT G+ SQ + L V
Sbjct: 69 YIQYTDAGEYLCTASNTIGQD-SQSMYLEV 97
>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 = 27.3 bits (60), Expect = 1.2
Identities = 22/96 (22%), Positives = 40/96 (41%), Gaps = 21/96 (21%)
Query: 62 SLNPTDIKEGDDVYFECQVSANPRAHRLLWFHNDKEIHHNVTGGIILSNISLVLQKVSRQ 121
SL+ ++ G+ +F C P + W+ N G I+S+ +V+QK +
Sbjct: 6 SLSKVELSVGESKFFTCTAIGEP--ESIDWY--------NPQGEKIVSSQRVVVQKEGVR 55
Query: 122 S-----------AGEYSCMAINTEGRGASQPIILAV 146
S AG Y C A + +G+ ++L +
Sbjct: 56 SRLTIYNANIEDAGIYRCQATDAKGQTQEATVVLEI 91
>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 = 27.3 bits (60), Expect = 1.4
Identities = 17/74 (22%), Positives = 33/74 (44%), Gaps = 5/74 (6%)
Query: 67 DIKEGDDVYFECQVSANPRAHRLLWFH-NDKEIHHNVTGGIILSN----ISLVLQKVSRQ 121
+I G+ +F CQV+ + + WF N +++ N ++ N +L + +
Sbjct: 11 EISVGESKFFLCQVAGEAKDKDISWFSPNGEKLTPNQQRISVVRNDDYSSTLTIYNANID 70
Query: 122 SAGEYSCMAINTEG 135
AG Y C+ N +
Sbjct: 71 DAGIYKCVVSNEDE 84
>gnl|CDD|150339 pfam09639, YjcQ, YjcQ protein. YjcQ is a protein of approx. 100
residues containing four alpha helices and three beta
strands. It is expressed in bacteria and also in
viruses. It appears to be under the regulation of SigD
RNA polymerase which is responsible for the expression
of many genes encoding cell-surface proteins related to
flagellar assembly, motility, chemotaxis and autolysis
in the late exponential growth phase. The exact
function of YjcQ is unknown. However, it is thought to
be a prophage head protein in viruses.
Length = 88
Score = 27.0 bits (60), Expect = 1.5
Identities = 12/31 (38%), Positives = 15/31 (48%)
Query: 11 VSYVPFKPSADDDNSKLTCRAENTLIANSSM 41
VS+ P P D N +T + N L NS M
Sbjct: 43 VSFTPTSPILADSNPYITSKGLNYLEENSMM 73
>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 = 26.8 bits (59), Expect = 1.7
Identities = 12/32 (37%), Positives = 16/32 (50%)
Query: 104 GGIILSNISLVLQKVSRQSAGEYSCMAINTEG 135
+ +N +L L V GEY C A N+EG
Sbjct: 29 TKKLNNNKTLQLDNVLESDDGEYVCTAENSEG 60
>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 = 25.7 bits (56), Expect = 4.4
Identities = 21/73 (28%), Positives = 33/73 (45%), Gaps = 4/73 (5%)
Query: 73 DVYFECQVSANPRAHRLLWFHNDKEIHHNVTGGIILSNISLVLQKVSRQSAGEYSCMAIN 132
D+ FEC+V+ P + W N + + I+ + VL V + G Y C+A N
Sbjct: 1 DIVFECEVTGKP-TPTVKWVKNGDMVIPSDYFKIVKEHNLQVLGLV-KSDEGFYQCIAEN 58
Query: 133 TEG--RGASQPII 143
G + +Q II
Sbjct: 59 DVGNVQAGAQLII 71
>gnl|CDD|189752 pfam00877, NLPC_P60, NlpC/P60 family. The function of this domain
is unknown. It is found in several lipoproteins.
Length = 105
Score = 26.1 bits (58), Expect = 4.7
Identities = 10/48 (20%), Positives = 22/48 (45%), Gaps = 3/48 (6%)
Query: 65 PTDIKEGDDVYFECQVSANPRAHRLLWFHNDKEIHHNVTGGIILSNIS 112
+ + GD V+F H ++ N + +H + GG+ +S++
Sbjct: 48 KSQPRRGDLVFF--GTGGGIS-HVGIYLGNGQMLHASTGGGVSISSLR 92
>gnl|CDD|222626 pfam14253, AbiH, Bacteriophage abortive infection AbiH. This
family of proteins confers resistance to bacteriophage.
Length = 269
Score = 26.5 bits (59), Expect = 4.9
Identities = 9/39 (23%), Positives = 19/39 (48%), Gaps = 5/39 (12%)
Query: 56 VIHFGSSLNPTDIKEGDDVYFECQVSANPRAHRLLWFHN 94
+ +G SL+ D YFE + + P A ++ +++
Sbjct: 236 IYVYGHSLSEVDK-----PYFEEIIKSLPEAKWIISYYS 269
>gnl|CDD|178129 PLN02513, PLN02513, adenylosuccinate synthase.
Length = 427
Score = 26.5 bits (59), Expect = 5.4
Identities = 13/39 (33%), Positives = 18/39 (46%)
Query: 55 VVIHFGSSLNPTDIKEGDDVYFECQVSANPRAHRLLWFH 93
VV+H D E + V E ++ + RAH L FH
Sbjct: 74 VVVHLPGLFEEIDGLESNGVSCEGRLLVSDRAHLLFDFH 112
>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 = 25.5 bits (56), Expect = 5.5
Identities = 18/70 (25%), Positives = 29/70 (41%), Gaps = 3/70 (4%)
Query: 71 GDDVYFECQVSANPRAHRLLWFHNDKEIHHNVTGGIILSNISLVLQKVSRQSAGEYSCMA 130
G +V EC NP ++ W D + + I +S L + + + G Y C A
Sbjct: 16 GQNVTLECFALGNP-VPQIKWRKVDGSMPSSAE--ISMSGAVLKIPNIQFEDEGTYECEA 72
Query: 131 INTEGRGASQ 140
N +G+ Q
Sbjct: 73 ENIKGKDTHQ 82
>gnl|CDD|143251 cd05774, Ig_CEACAM_D1, First immunoglobulin (Ig)-like domain of
carcinoembryonic antigen (CEA) related cell adhesion
molecule (CEACAM). IG_CEACAM_D1: immunoglobulin
(Ig)-like domain 1 in carcinoembryonic antigen (CEA)
related cell adhesion molecule (CEACAM) protein
subfamily. The CEA family is a group of anchored or
secreted glycoproteins, expressed by epithelial cells,
leukocytes, endothelial cells and placenta. The CEA
family is divided into the CEACAM and pregnancy-specific
glycoprotein (PSG) subfamilies. This group represents
the CEACAM subfamily. CEACAM1 has many important
cellular functions, it is a cell adhesion molecule, and
a signaling molecule that regulates the growth of tumor
cells, it is an angiogenic factor, and is a receptor for
bacterial and viral pathogens, including mouse hepatitis
virus (MHV). In mice, four isoforms of CEACAM1 generated
by alternative splicing have either two [D1, D4] or four
[D1-D4] Ig-like domains on the cell surface. This family
corresponds to the D1 Ig-like domain.
Length = 105
Score = 25.7 bits (57), Expect = 6.1
Identities = 10/31 (32%), Positives = 17/31 (54%)
Query: 106 IILSNISLVLQKVSRQSAGEYSCMAINTEGR 136
I N SL++Q V+++ G Y+ I T +
Sbjct: 65 TIYPNGSLLIQNVTQKDTGFYTLQTITTNFQ 95
>gnl|CDD|211964 TIGR04241, adenoE3CR1rpt, mastadenovirus E3 CR1-alpha-1. This
domain occurs only in the adenovirus E3 region
CR1-alpha-1 protein. It may occur once, twice, or three
times.
Length = 81
Score = 25.4 bits (56), Expect = 6.3
Identities = 12/51 (23%), Positives = 18/51 (35%), Gaps = 8/51 (15%)
Query: 88 RLLWFHNDKEIHHNVTGGIILSNISLVLQKVSRQS--------AGEYSCMA 130
+LW N+ G++L N + S Q G Y+C A
Sbjct: 21 YILWTFNNSSCATYDNDGVLLPNNLSLTFSASSQKLTLFPPFVPGTYTCQA 71
>gnl|CDD|153151 cd04879, ACT_3PGDH-like, ACT_3PGDH-like CD includes the C-terminal
ACT (regulatory) domain of D-3-phosphoglycerate
dehydrogenase (3PGDH). ACT_3PGDH-like: The
ACT_3PGDH-like CD includes the C-terminal ACT
(regulatory) domain of D-3-phosphoglycerate
dehydrogenase (3PGDH), with or without an extended
C-terminal (xct) region found in various bacteria,
archaea, fungi, and plants. 3PGDH is an enzyme that
belongs to the D-isomer specific, 2-hydroxyacid
dehydrogenase family and catalyzes the oxidation of
D-3-phosphoglycerate to 3- phosphohydroxypyruvate, which
is the first step in the biosynthesis of L-serine, using
NAD+ as the oxidizing agent. In bacteria, 3PGDH is
feedback controlled by the end product L-serine in an
allosteric manner. In the Escherichia coli
homotetrameric enzyme, the interface at adjacent ACT
(regulatory) domains couples to create an extended
beta-sheet. Each regulatory interface forms two
serine-binding sites. The mechanism by which serine
transmits inhibition to the active site is postulated to
involve the tethering of the regulatory domains together
to create a rigid quaternary structure with a
solvent-exposed active site cleft. This CD also includes
the C-terminal ACT domain of the L-serine dehydratase
(LSD), iron-sulfur-dependent, beta subunit, found in
various bacterial anaerobes such as Clostridium,
Bacillus, and Treponema species. LSD enzymes catalyze
the deamination of L-serine, producing pyruvate and
ammonia. Unlike the eukaryotic L-serine dehydratase,
which requires the pyridoxal-5'-phosphate (PLP)
cofactor, the prokaryotic L-serine dehydratase contains
an [4Fe-4S] cluster instead of a PLP active site. The
LSD alpha and beta subunits of the 'clostridial' enzyme
are encoded by the sdhA and sdhB genes. The single
subunit bacterial homologs of L-serine dehydratase
(LSD1, LSD2, TdcG) present in E. coli, and other
Enterobacteriales, lack the ACT domain described here.
Members of this CD belong to the superfamily of ACT
regulatory domains.
Length = 71
Score = 24.7 bits (55), Expect = 8.0
Identities = 11/45 (24%), Positives = 21/45 (46%), Gaps = 7/45 (15%)
Query: 98 IHHNVTG-----GIILS--NISLVLQKVSRQSAGEYSCMAINTEG 135
+H +V G G IL I++ +V R+ G + M ++ +
Sbjct: 5 VHKDVPGVIGKVGTILGEHGINIAAMQVGRKEKGGIAYMVLDVDS 49
>gnl|CDD|143171 cd04970, Ig6_Contactin_like, Sixth Ig domain of contactin.
Ig6_Contactin_like: Sixth 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 neur
onal 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 = 85
Score = 25.1 bits (55), Expect = 8.4
Identities = 16/61 (26%), Positives = 25/61 (40%), Gaps = 7/61 (11%)
Query: 77 ECQVSANPRAH-RLLWFHNDKEIHHNVTGG------IILSNISLVLQKVSRQSAGEYSCM 129
+C S +P W N I + GG SN L+++ + AG+Y+C
Sbjct: 6 QCHASHDPTLDLTFTWSFNGVPIDFDKDGGHYRRVGGKDSNGDLMIRNAQLKHAGKYTCT 65
Query: 130 A 130
A
Sbjct: 66 A 66
>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 = 24.8 bits (54), Expect = 9.3
Identities = 18/83 (21%), Positives = 33/83 (39%), Gaps = 16/83 (19%)
Query: 62 SLNPTDIKEGDDVYFECQVSANPRAHRLLWF---------HNDKEIHHNVTGGIILSNIS 112
+ +I G+ +F CQV P+ + WF + N + S +
Sbjct: 6 VPSQGEISVGESKFFLCQVIGEPK--DISWFSPNGEKLVTQQQISVVQN---DDVRS--T 58
Query: 113 LVLQKVSRQSAGEYSCMAINTEG 135
L + + + AG Y C+A + +G
Sbjct: 59 LTIYNANIEDAGIYKCVATDAKG 81
Database: CDD.v3.10
Posted date: Mar 20, 2013 7:55 AM
Number of letters in database: 10,937,602
Number of sequences in database: 44,354
Lambda K H
0.316 0.130 0.383
Gapped
Lambda K H
0.267 0.0637 0.140
Matrix: BLOSUM62
Gap Penalties: Existence: 11, Extension: 1
Number of Sequences: 44354
Number of Hits to DB: 7,006,420
Number of extensions: 598939
Number of successful extensions: 550
Number of sequences better than 10.0: 1
Number of HSP's gapped: 532
Number of HSP's successfully gapped: 65
Length of query: 147
Length of database: 10,937,602
Length adjustment: 88
Effective length of query: 59
Effective length of database: 7,034,450
Effective search space: 415032550
Effective search space used: 415032550
Neighboring words threshold: 11
Window for multiple hits: 40
X1: 16 ( 7.3 bits)
X2: 38 (14.6 bits)
X3: 64 (24.7 bits)
S1: 41 (21.6 bits)
S2: 54 (24.8 bits)