RPS-BLAST 2.2.26 [Sep-21-2011]
Database: CDD.v3.10
44,354 sequences; 10,937,602 total letters
Searching..................................................done
Query= psy13645
(191 letters)
>gnl|CDD|175985 cd04018, C2C_Ferlin, C2 domain third repeat in Ferlin. Ferlins are
involved in vesicle fusion events. Ferlins and other
proteins, such as Synaptotagmins, are implicated in
facilitating the fusion process when cell membranes fuse
together. There are six known human Ferlins: Dysferlin
(Fer1L1), Otoferlin (Fer1L2), Myoferlin (Fer1L3),
Fer1L4, Fer1L5, and Fer1L6. Defects in these genes can
lead to a wide range of diseases including muscular
dystrophy (dysferlin), deafness (otoferlin), and
infertility (fer-1, fertilization factor-1).
Structurally they have 6 tandem C2 domains, designated
as (C2A-C2F) and a single C-terminal transmembrane
domain, though there is a new study that disputes this
and claims that there are actually 7 tandem C2 domains
with another C2 domain inserted between C2D and C2E.
In a subset of them (Dysferlin, Myoferlin, and Fer1)
there is an additional conserved domain called DysF. C2
domains fold into an 8-standed beta-sandwich that can
adopt 2 structural arrangements: Type I and Type II,
distinguished by a circular permutation involving their
N- and C-terminal beta strands. Many C2 domains are
Ca2+-dependent membrane-targeting modules that bind a
wide variety of substances including bind phospholipids,
inositol polyphosphates, and intracellular proteins.
Most C2 domain proteins are either signal transduction
enzymes that contain a single C2 domain, such as protein
kinase C, or membrane trafficking proteins which contain
at least two C2 domains, such as synaptotagmin 1.
However, there are a few exceptions to this including
RIM isoforms and some splice variants of piccolo/aczonin
and intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. This cd contains the third C2
repeat, C2C, and has a type-II topology.
Length = 151
Score = 199 bits (507), Expect = 5e-66
Identities = 80/111 (72%), Positives = 93/111 (83%), Gaps = 1/111 (0%)
Query: 77 RFIIRIYRADGLPKMNSSLVANVKKAFTGETKDLVDPYVQVSFAGLTGKTSVKKNSYNPV 136
RFI +IYRA+ LP+M+S ++ANVKKAF GE K+LVDPYV+VSFAG KTSVKKNSYNP
Sbjct: 1 RFIFKIYRAEDLPQMDSGIMANVKKAFLGEKKELVDPYVEVSFAGQKVKTSVKKNSYNPE 60
Query: 137 WNEQIIFSEMFPPLCSRIKIQLRDNDPV-NNTVIGTHYIDLKNISNDGDKG 186
WNEQI+F EMFPPLC RIKIQ+RD D V N+ VIGTH+IDL ISN GD+G
Sbjct: 61 WNEQIVFPEMFPPLCERIKIQIRDWDRVGNDDVIGTHFIDLSKISNSGDEG 111
>gnl|CDD|149289 pfam08151, FerI, FerI (NUC094) domain. This domain is present in
proteins of the Ferlin family. It is often located
between two C2 domains.
Length = 72
Score = 97.0 bits (242), Expect = 7e-27
Identities = 41/66 (62%), Positives = 47/66 (71%), Gaps = 1/66 (1%)
Query: 5 LREGDHQFYHKWALLTDPDDIAGGPKGYLKCDISVIGKGDTVKIPQKS-EKDEDDIEANL 63
+ DH F KWALLTDPDD + G KGYLK D+SV+GKGD + KS + DEDDIE NL
Sbjct: 7 YDQPDHAFLRKWALLTDPDDTSAGVKGYLKVDLSVLGKGDEPPLEPKSVDGDEDDIEKNL 66
Query: 64 LLPEGV 69
LLP GV
Sbjct: 67 LLPAGV 72
>gnl|CDD|175973 cd00030, C2, C2 domain. The C2 domain was first identified in PKC.
C2 domains fold into an 8-standed beta-sandwich that can
adopt 2 structural arrangements: Type I and Type II,
distinguished by a circular permutation involving their
N- and C-terminal beta strands. Many C2 domains are
Ca2+-dependent membrane-targeting modules that bind a
wide variety of substances including bind phospholipids,
inositol polyphosphates, and intracellular proteins.
Most C2 domain proteins are either signal transduction
enzymes that contain a single C2 domain, such as protein
kinase C, or membrane trafficking proteins which contain
at least two C2 domains, such as synaptotagmin 1.
However, there are a few exceptions to this including
RIM isoforms and some splice variants of piccolo/aczonin
and intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions.
Length = 102
Score = 69.4 bits (170), Expect = 8e-16
Identities = 30/112 (26%), Positives = 48/112 (42%), Gaps = 17/112 (15%)
Query: 78 FIIRIYRADGLPKMNSSLVANVKKAFTGETKDLVDPYVQVSFAGL-TGKTSVKKNSYNPV 136
+ + A LP + + DPYV+VS G KT V KN+ NPV
Sbjct: 1 LRVTVIEARNLPAKDLN--------------GKSDPYVKVSLGGKQKFKTKVVKNTLNPV 46
Query: 137 WNEQIIFSEMFPPLCSRIKIQLRDNDPVN-NTVIGTHYIDLKNISNDGDKGK 187
WNE F + P + +++ D D + + +G I L + + G +G+
Sbjct: 47 WNETFEF-PVLDPESDTLTVEVWDKDRFSKDDFLGEVEIPLSELLDSGKEGE 97
>gnl|CDD|214577 smart00239, C2, Protein kinase C conserved region 2 (CalB).
Ca2+-binding motif present in phospholipases, protein
kinases C, and synaptotagmins (among others). Some do
not appear to contain Ca2+-binding sites. Particular C2s
appear to bind phospholipids, inositol polyphosphates,
and intracellular proteins. Unusual occurrence in
perforin. Synaptotagmin and PLC C2s are permuted in
sequence with respect to N- and C-terminal beta strands.
SMART detects C2 domains using one or both of two
profiles.
Length = 101
Score = 68.3 bits (167), Expect = 2e-15
Identities = 33/107 (30%), Positives = 47/107 (43%), Gaps = 19/107 (17%)
Query: 77 RFIIRIYRADGLPKMNSSLVANVKKAFTGETKDLVDPYVQVSFAGL---TGKTSVKKNSY 133
++I A LP + DPYV+VS G KT V KN+
Sbjct: 1 TLTVKIISARNLPPKDKG--------------GKSDPYVKVSLDGDPKEKKKTKVVKNTL 46
Query: 134 NPVWNEQIIFSEMFPPLCSRIKIQLRDNDPVN-NTVIGTHYIDLKNI 179
NPVWNE F E+ PP + ++I++ D D + IG I L ++
Sbjct: 47 NPVWNETFEF-EVPPPELAELEIEVYDKDRFGRDDFIGQVTIPLSDL 92
>gnl|CDD|215765 pfam00168, C2, C2 domain.
Length = 85
Score = 63.1 bits (154), Expect = 1e-13
Identities = 29/96 (30%), Positives = 40/96 (41%), Gaps = 19/96 (19%)
Query: 80 IRIYRADGLPKMNSSLVANVKKAFTGETKDLVDPYVQVSFAGLTG---KTSVKKNSYNPV 136
+ + A LP + DPYV+VS G KT V KN+ NPV
Sbjct: 3 VTVISAKNLPPKDL--------------NGKSDPYVKVSLGGQKKDTKKTKVVKNTLNPV 48
Query: 137 WNEQIIFSEMFPPLCSRIKIQLRDNDPV-NNTVIGT 171
WNE F P L + ++I++ D D + IG
Sbjct: 49 WNETFTFEVTLPEL-AELRIEVYDYDRFGKDDFIGE 83
>gnl|CDD|175974 cd00275, C2_PLC_like, C2 domain present in
Phosphoinositide-specific phospholipases C (PLC). PLCs
are involved in the hydrolysis of
phosphatidylinositol-4,5-bisphosphate (PIP2) to
d-myo-inositol-1,4,5-trisphosphate (1,4,5-IP3) and
sn-1,2-diacylglycerol (DAG). 1,4,5-IP3 and DAG are
second messengers in eukaryotic signal transduction
cascades. PLC is composed of a N-terminal PH domain
followed by a series of EF hands, a catalytic TIM barrel
and a C-terminal C2 domain. C2 domains fold into an
8-standed beta-sandwich that can adopt 2 structural
arrangements: Type I and Type II, distinguished by a
circular permutation involving their N- and C-terminal
beta strands. Many C2 domains are Ca2+-dependent
membrane-targeting modules that bind a wide variety of
substances including bind phospholipids, inositol
polyphosphates, and intracellular proteins. Most C2
domain proteins are either signal transduction enzymes
that contain a single C2 domain, such as protein kinase
C, or membrane trafficking proteins which contain at
least two C2 domains, such as synaptotagmin 1. However,
there are a few exceptions to this including RIM
isoforms and some splice variants of piccolo/aczonin and
intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. Members here have a type-II
topology.
Length = 128
Score = 58.3 bits (142), Expect = 2e-11
Identities = 32/110 (29%), Positives = 46/110 (41%), Gaps = 20/110 (18%)
Query: 77 RFIIRIYRADGLPKMNSSLVANVKKAFTGETKDLVDPYVQVSFAGL------TGKTS-VK 129
I+I LPK G+ +VDPYV+V GL KT VK
Sbjct: 3 TLTIKIISGQQLPK------------PKGDKGSIVDPYVEVEIHGLPADDSAKFKTKVVK 50
Query: 130 KNSYNPVWNEQIIFSEMFPPLCSRIKIQLRDNDPVNNTVIGTHYIDLKNI 179
N +NPVWNE F P L ++ + D D ++ +G + L ++
Sbjct: 51 NNGFNPVWNETFEFDVTVPELAF-LRFVVYDEDSGDDDFLGQACLPLDSL 99
>gnl|CDD|227371 COG5038, COG5038, Ca2+-dependent lipid-binding protein, contains C2
domain [General function prediction only].
Length = 1227
Score = 55.5 bits (134), Expect = 3e-09
Identities = 33/102 (32%), Positives = 51/102 (50%), Gaps = 22/102 (21%)
Query: 80 IRIYRADGLPKMNSSLVANVKKAFTGETKDLVDPYVQVSFAGLT-GKTSVKKNSYNPVWN 138
++I A+GL K +S++ VDPY+ V+F+ GKT VKKN+ NPVWN
Sbjct: 440 VKIKSAEGLKKSDSTI------------NGTVDPYITVTFSDRVIGKTRVKKNTLNPVWN 487
Query: 139 EQI---IFSEMFPPLCSRIKIQLRD-NDPVNNTVIGTHYIDL 176
E + S + + L D N ++ V+G+ +DL
Sbjct: 488 ETFYILLNS-----FTDPLNLSLYDFNSFKSDKVVGSTQLDL 524
Score = 40.5 bits (95), Expect = 3e-04
Identities = 17/83 (20%), Positives = 35/83 (42%), Gaps = 4/83 (4%)
Query: 111 VDPYVQVSFAGLT-GKTSVKKNSYNPVWNEQIIFSEMFPPLCSRIKIQLRDNDPVNNT-V 168
DPY V L +T ++ NP+WN +I++ + R+ ++ D + +
Sbjct: 732 SDPYATVLVNNLVKYRTIYGSSTLNPIWN-EILYVPVTSKN-QRLTLECMDYEESGDDRN 789
Query: 169 IGTHYIDLKNISNDGDKGKDYTY 191
+G I++ N+S +
Sbjct: 790 LGEVNINVSNVSKKDEDSALMET 812
Score = 32.4 bits (74), Expect = 0.15
Identities = 23/85 (27%), Positives = 35/85 (41%), Gaps = 23/85 (27%)
Query: 112 DPYVQVSFAGLTG-KTSVKKNSYNPVWNEQIIFSEMFPPLCSRIKIQLRDNDPV------ 164
DP+V++ + KT V K + NPVWNE+ I++ R D +
Sbjct: 1062 DPFVKLFLNEKSVYKTKVVKKTLNPVWNEEFT-----------IEVLNRVKDVLTINVND 1110
Query: 165 -----NNTVIGTHYIDLKNISNDGD 184
N ++GT IDL + G
Sbjct: 1111 WDSGEKNDLLGTAEIDLSKLEPGGT 1135
>gnl|CDD|175982 cd04015, C2_plant_PLD, C2 domain present in plant phospholipase D
(PLD). PLD hydrolyzes terminal phosphodiester bonds in
diester glycerophospholipids resulting in the
degradation of phospholipids. In vitro PLD transfers
phosphatidic acid to primary alcohols. In plants PLD
plays a role in germination, seedling growth,
phosphatidylinositol metabolism, and changes in
phospholipid composition. There is a single
Ca(2+)/phospholipid-binding C2 domain in PLD. C2 domains
fold into an 8-standed beta-sandwich that can adopt 2
structural arrangements: Type I and Type II,
distinguished by a circular permutation involving their
N- and C-terminal beta strands. Many C2 domains are
Ca2+-dependent membrane-targeting modules that bind a
wide variety of substances including bind phospholipids,
inositol polyphosphates, and intracellular proteins.
Most C2 domain proteins are either signal transduction
enzymes that contain a single C2 domain, such as protein
kinase C, or membrane trafficking proteins which contain
at least two C2 domains, such as synaptotagmin 1.
However, there are a few exceptions to this including
RIM isoforms and some splice variants of piccolo/aczonin
and intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions.
Length = 158
Score = 50.4 bits (121), Expect = 3e-08
Identities = 35/115 (30%), Positives = 48/115 (41%), Gaps = 25/115 (21%)
Query: 80 IRIYRADGLPKMN--SSLVANVKKAFTGETKDLV--------------DPYVQVSFAGLT 123
+ IY AD LP M+ S + G ++ + DPY V AG
Sbjct: 11 VTIYEADNLPNMDMFSEKLRRFFSKLVGCSEPTLKRPSSHRHVGKITSDPYATVDLAGAR 70
Query: 124 -GKTSVKKNSYNPVWNEQIIFSEMFPPLC---SRIKIQLRDNDPVNNTVIGTHYI 174
+T V +NS NPVWNE F S ++ ++DND V +IG YI
Sbjct: 71 VARTRVIENSENPVWNES--FH---IYCAHYASHVEFTVKDNDVVGAQLIGRAYI 120
>gnl|CDD|176009 cd04044, C2A_Tricalbin-like, C2 domain first repeat present in
Tricalbin-like proteins. 5 to 6 copies of the C2 domain
are present in Tricalbin, a yeast homolog of
Synaptotagmin, which is involved in membrane trafficking
and sorting. C2 domains fold into an 8-standed
beta-sandwich that can adopt 2 structural arrangements:
Type I and Type II, distinguished by a circular
permutation involving their N- and C-terminal beta
strands. Many C2 domains are Ca2+-dependent
membrane-targeting modules that bind a wide variety of
substances including bind phospholipids, inositol
polyphosphates, and intracellular proteins. Most C2
domain proteins are either signal transduction enzymes
that contain a single C2 domain, such as protein kinase
C, or membrane trafficking proteins which contain at
least two C2 domains, such as synaptotagmin 1. However,
there are a few exceptions to this including RIM
isoforms and some splice variants of piccolo/aczonin and
intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. This cd contains the first C2
repeat, C2A, and has a type-II topology.
Length = 124
Score = 49.5 bits (119), Expect = 4e-08
Identities = 34/102 (33%), Positives = 48/102 (47%), Gaps = 22/102 (21%)
Query: 80 IRIYRADGLPKMNSSLVANVKKAFTGETKDLVDPYVQVSFAGL--TGKTSVKKNSYNPVW 137
+ I A GL K + + G T VDPYV S + +T VKK++ NPVW
Sbjct: 6 VTIKSARGL-KGSDII---------GGT---VDPYVTFSISNRRELARTKVKKDTSNPVW 52
Query: 138 NEQ--IIFSEMFPPLCSRIKIQLRD-NDPVNNTVIGTHYIDL 176
NE I+ + + PL + + D ND + +IGT DL
Sbjct: 53 NETKYILVNSLTEPL----NLTVYDFNDKRKDKLIGTAEFDL 90
>gnl|CDD|176003 cd04038, C2_ArfGAP, C2 domain present in Arf GTPase Activating
Proteins (GAP). ArfGAP is a GTPase activating protein
which regulates the ADP ribosylation factor Arf, a
member of the Ras superfamily of GTP-binding proteins.
The GTP-bound form of Arf is involved in Golgi
morphology and is involved in recruiting coat proteins.
ArfGAP is responsible for the GDP-bound form of Arf
which is necessary for uncoating the membrane and
allowing the Golgi to fuse with an acceptor compartment.
These proteins contain an N-terminal ArfGAP domain
containing the characteristic zinc finger motif
(Cys-x2-Cys-x(16,17)-x2-Cys) and C-terminal C2 domain.
C2 domains were first identified in Protein Kinase C
(PKC). C2 domains fold into an 8-standed beta-sandwich
that can adopt 2 structural arrangements: Type I and
Type II, distinguished by a circular permutation
involving their N- and C-terminal beta strands. Many C2
domains are Ca2+-dependent membrane-targeting modules
that bind a wide variety of substances including bind
phospholipids, inositol polyphosphates, and
intracellular proteins. Most C2 domain proteins are
either signal transduction enzymes that contain a single
C2 domain, such as protein kinase C, or membrane
trafficking proteins which contain at least two C2
domains, such as synaptotagmin 1. However, there are a
few exceptions to this including RIM isoforms and some
splice variants of piccolo/aczonin and intersectin which
only have a single C2 domain. C2 domains with a calcium
binding region have negatively charged residues,
primarily aspartates, that serve as ligands for calcium
ions.
Length = 145
Score = 47.7 bits (114), Expect = 3e-07
Identities = 19/53 (35%), Positives = 28/53 (52%), Gaps = 6/53 (11%)
Query: 112 DPYVQVSFAGLTGKTSVKKNSYNPVWNEQIIFS--EMFPPLCSRIKIQLRDND 162
DPYV ++ KT V K + NPVWNE++ S P +K+++ D D
Sbjct: 23 DPYVVLTLGNQKVKTRVIKKNLNPVWNEELTLSVPNPMAP----LKLEVFDKD 71
>gnl|CDD|176037 cd08391, C2A_C2C_Synaptotagmin_like, C2 domain first and third
repeat in Synaptotagmin-like proteins. Synaptotagmin is
a membrane-trafficking protein characterized by a
N-terminal transmembrane region, a linker, and 2
C-terminal C2 domains. Previously all synaptotagmins
were thought to be calcium sensors in the regulation of
neurotransmitter release and hormone secretion, but it
has been shown that not all of them bind calcium. Of
the 17 identified synaptotagmins only 8 bind calcium
(1-3, 5-7, 9, 10). The function of the two C2 domains
that bind calcium are: regulating the fusion step of
synaptic vesicle exocytosis (C2A) and binding to
phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the
absence of calcium ions and to phosphatidylinositol
bisphosphate (PIP2) in their presence (C2B). C2B also
regulates also the recycling step of synaptic vesicles.
C2 domains fold into an 8-standed beta-sandwich that can
adopt 2 structural arrangements: Type I and Type II,
distinguished by a circular permutation involving their
N- and C-terminal beta strands. Many C2 domains are
Ca2+-dependent membrane-targeting modules that bind a
wide variety of substances including bind phospholipids,
inositol polyphosphates, and intracellular proteins.
Most C2 domain proteins are either signal transduction
enzymes that contain a single C2 domain, such as protein
kinase C, or membrane trafficking proteins which contain
at least two C2 domains, such as synaptotagmin 1.
However, there are a few exceptions to this including
RIM isoforms and some splice variants of piccolo/aczonin
and intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. This cd contains either the
first or third repeat in Synaptotagmin-like proteins
with a type-I topology.
Length = 121
Score = 46.5 bits (111), Expect = 4e-07
Identities = 28/85 (32%), Positives = 39/85 (45%), Gaps = 5/85 (5%)
Query: 101 KAFTGETKDLVDPYVQVSFAGLTGKTSVKKNSYNPVWNEQIIFSEMFPPLCS--RIKIQL 158
K G K DPYV V T K+ V K + NP WNE ++ E ++I+L
Sbjct: 18 KFVGGLVKGKSDPYVIVRVGAQTFKSKVIKENLNPKWNE--VY-EAVVDEVPGQELEIEL 74
Query: 159 RDNDPVNNTVIGTHYIDLKNISNDG 183
D DP + +G IDL ++ G
Sbjct: 75 FDEDPDKDDFLGRLSIDLGSVEKKG 99
>gnl|CDD|175984 cd04017, C2D_Ferlin, C2 domain fourth repeat in Ferlin. Ferlins
are involved in vesicle fusion events. Ferlins and
other proteins, such as Synaptotagmins, are implicated
in facilitating the fusion process when cell membranes
fuse together. There are six known human Ferlins:
Dysferlin (Fer1L1), Otoferlin (Fer1L2), Myoferlin
(Fer1L3), Fer1L4, Fer1L5, and Fer1L6. Defects in these
genes can lead to a wide range of diseases including
muscular dystrophy (dysferlin), deafness (otoferlin),
and infertility (fer-1, fertilization factor-1).
Structurally they have 6 tandem C2 domains, designated
as (C2A-C2F) and a single C-terminal transmembrane
domain, though there is a new study that disputes this
and claims that there are actually 7 tandem C2 domains
with another C2 domain inserted between C2D and C2E.
In a subset of them (Dysferlin, Myoferlin, and Fer1)
there is an additional conserved domain called DysF. C2
domains fold into an 8-standed beta-sandwich that can
adopt 2 structural arrangements: Type I and Type II,
distinguished by a circular permutation involving their
N- and C-terminal beta strands. Many C2 domains are
Ca2+-dependent membrane-targeting modules that bind a
wide variety of substances including bind phospholipids,
inositol polyphosphates, and intracellular proteins.
Most C2 domain proteins are either signal transduction
enzymes that contain a single C2 domain, such as protein
kinase C, or membrane trafficking proteins which contain
at least two C2 domains, such as synaptotagmin 1.
However, there are a few exceptions to this including
RIM isoforms and some splice variants of piccolo/aczonin
and intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. This cd contains the fourth C2
repeat, C2D, and has a type-II topology.
Length = 135
Score = 46.8 bits (112), Expect = 5e-07
Identities = 20/65 (30%), Positives = 33/65 (50%), Gaps = 14/65 (21%)
Query: 112 DPYVQVSFAGLTGKTSVKKNSYNPVWNEQIIFSEMF-----------PPLCSRIKIQLRD 160
DP+ +VSF + +T V K + +P W++ +IF E+ PPL + ++L D
Sbjct: 23 DPFARVSFLNQSQETEVIKETLSPTWDQTLIFDEVELYGSPEEIAQNPPL---VVVELFD 79
Query: 161 NDPVN 165
D V
Sbjct: 80 QDSVG 84
>gnl|CDD|176070 cd08688, C2_KIAA0528-like, C2 domain found in the Human KIAA0528
cDNA clone. The members of this CD are named after the
Human KIAA0528 cDNA clone. All members here contain a
single C2 repeat. No other information on this protein
is currently known. The C2 domain was first identified
in PKC. C2 domains fold into an 8-standed beta-sandwich
that can adopt 2 structural arrangements: Type I and
Type II, distinguished by a circular permutation
involving their N- and C-terminal beta strands. Many C2
domains are Ca2+-dependent membrane-targeting modules
that bind a wide variety of substances including bind
phospholipids, inositol polyphosphates, and
intracellular proteins. Most C2 domain proteins are
either signal transduction enzymes that contain a single
C2 domain, such as protein kinase C, or membrane
trafficking proteins which contain at least two C2
domains, such as synaptotagmin 1. However, there are a
few exceptions to this including RIM isoforms and some
splice variants of piccolo/aczonin and intersectin which
only have a single C2 domain. C2 domains with a calcium
binding region have negatively charged residues,
primarily aspartates, that serve as ligands for calcium
ions.
Length = 110
Score = 45.4 bits (108), Expect = 9e-07
Identities = 35/108 (32%), Positives = 49/108 (45%), Gaps = 30/108 (27%)
Query: 80 IRIYRADGLPKMNSSLVANVKKAFTGETKDLVDPYVQVSFAGLTGKTSVKKNSYNPVWN- 138
+R+ A LP M+ + DL D +V+V F T KT V K S NPVWN
Sbjct: 3 VRVVAARDLPVMD-------------RSSDLTDAFVEVKFGSTTYKTDVVKKSLNPVWNS 49
Query: 139 --------EQIIFSEMFPPLCSRIKIQLRDNDPVN-NTVIGTHYIDLK 177
++ + E PL +I++ D+D + N IG YIDL
Sbjct: 50 EWFRFEVDDEELQDE---PL----QIRVMDHDTYSANDAIGKVYIDLN 90
>gnl|CDD|176004 cd04039, C2_PSD, C2 domain present in Phosphatidylserine
decarboxylase (PSD). PSD is involved in the
biosynthesis of aminophospholipid by converting
phosphatidylserine (PtdSer) to phosphatidylethanolamine
(PtdEtn). There is a single C2 domain present and it is
thought to confer PtdSer binding motif that is common to
PKC and synaptotagmin. C2 domains fold into an 8-standed
beta-sandwich that can adopt 2 structural arrangements:
Type I and Type II, distinguished by a circular
permutation involving their N- and C-terminal beta
strands. Many C2 domains are Ca2+-dependent
membrane-targeting modules that bind a wide variety of
substances including bind phospholipids, inositol
polyphosphates, and intracellular proteins. Most C2
domain proteins are either signal transduction enzymes
that contain a single C2 domain, such as protein kinase
C, or membrane trafficking proteins which contain at
least two C2 domains, such as synaptotagmin 1. However,
there are a few exceptions to this including RIM
isoforms and some splice variants of piccolo/aczonin and
intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions.
Length = 108
Score = 44.6 bits (106), Expect = 2e-06
Identities = 15/38 (39%), Positives = 28/38 (73%), Gaps = 1/38 (2%)
Query: 111 VDPYVQVSFAGLTGKTSVKKNSYNPVWNEQIIFSEMFP 148
+DP+V +SF +TS ++++ NPV+NE++ F E++P
Sbjct: 26 MDPFVIISFGRRVFRTSWRRHTLNPVFNERLAF-EVYP 62
>gnl|CDD|175978 cd04011, C2B_Ferlin, C2 domain second repeat in Ferlin. Ferlins
are involved in vesicle fusion events. Ferlins and
other proteins, such as Synaptotagmins, are implicated
in facilitating the fusion process when cell membranes
fuse together. There are six known human Ferlins:
Dysferlin (Fer1L1), Otoferlin (Fer1L2), Myoferlin
(Fer1L3), Fer1L4, Fer1L5, and Fer1L6. Defects in these
genes can lead to a wide range of diseases including
muscular dystrophy (dysferlin), deafness (otoferlin),
and infertility (fer-1, fertilization factor-1).
Structurally they have 6 tandem C2 domains, designated
as (C2A-C2F) and a single C-terminal transmembrane
domain, though there is a new study that disputes this
and claims that there are actually 7 tandem C2 domains
with another C2 domain inserted between C2D and C2E.
In a subset of them (Dysferlin, Myoferlin, and Fer1)
there is an additional conserved domain called DysF. C2
domains fold into an 8-standed beta-sandwich that can
adopt 2 structural arrangements: Type I and Type II,
distinguished by a circular permutation involving their
N- and C-terminal beta strands. Many C2 domains are
Ca2+-dependent membrane-targeting modules that bind a
wide variety of substances including bind phospholipids,
inositol polyphosphates, and intracellular proteins.
Most C2 domain proteins are either signal transduction
enzymes that contain a single C2 domain, such as protein
kinase C, or membrane trafficking proteins which contain
at least two C2 domains, such as synaptotagmin 1.
However, there are a few exceptions to this including
RIM isoforms and some splice variants of piccolo/aczonin
and intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. This cd contains the second C2
repeat, C2B, and has a type-II topology.
Length = 111
Score = 43.3 bits (103), Expect = 5e-06
Identities = 27/82 (32%), Positives = 41/82 (50%), Gaps = 14/82 (17%)
Query: 106 ETKDLV----DPYVQVSFAGLTGKTSVKKNSYNPVWNEQIIF------SEMFPPLCSRIK 155
E + LV DP V+V G TSVKK + P +NE F E+F + IK
Sbjct: 12 EARQLVGGNIDPVVKVEVGGQKKYTSVKKGTNCPFYNEYFFFNFHESPDELFDKI---IK 68
Query: 156 IQLRDND-PVNNTVIGTHYIDL 176
I + D+ ++T+IG+ +D+
Sbjct: 69 ISVYDSRSLRSDTLIGSFKLDV 90
Score = 36.4 bits (85), Expect = 0.001
Identities = 10/14 (71%), Positives = 10/14 (71%)
Query: 9 DHQFYHKWALLTDP 22
DH F KW LLTDP
Sbjct: 98 DHAFLRKWLLLTDP 111
>gnl|CDD|175975 cd00276, C2B_Synaptotagmin, C2 domain second repeat present in
Synaptotagmin. Synaptotagmin is a membrane-trafficking
protein characterized by a N-terminal transmembrane
region, a linker, and 2 C-terminal C2 domains. There are
several classes of Synaptotagmins. Previously all
synaptotagmins were thought to be calcium sensors in the
regulation of neurotransmitter release and hormone
secretion, but it has been shown that not all of them
bind calcium. Of the 17 identified synaptotagmins only
8 bind calcium (1-3, 5-7, 9, 10). The function of the
two C2 domains that bind calcium are: regulating the
fusion step of synaptic vesicle exocytosis (C2A) and
binding to phosphatidyl-inositol-3,4,5-triphosphate
(PIP3) in the absence of calcium ions and to
phosphatidylinositol bisphosphate (PIP2) in their
presence (C2B). C2B also regulates also the recycling
step of synaptic vesicles. C2 domains fold into an
8-standed beta-sandwich that can adopt 2 structural
arrangements: Type I and Type II, distinguished by a
circular permutation involving their N- and C-terminal
beta strands. Many C2 domains are Ca2+-dependent
membrane-targeting modules that bind a wide variety of
substances including bind phospholipids, inositol
polyphosphates, and intracellular proteins. Most C2
domain proteins are either signal transduction enzymes
that contain a single C2 domain, such as protein kinase
C, or membrane trafficking proteins which contain at
least two C2 domains, such as synaptotagmin 1. However,
there are a few exceptions to this including RIM
isoforms and some splice variants of piccolo/aczonin and
intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. This cd contains the second C2
repeat, C2B, and has a type-I topology.
Length = 134
Score = 43.7 bits (104), Expect = 5e-06
Identities = 30/102 (29%), Positives = 41/102 (40%), Gaps = 23/102 (22%)
Query: 77 RFIIRIYRADGLPKMNSSLVANVKKAFTGETKDLVDPYVQVSFAGLTG-----KTSVKKN 131
R + + +A LP + ++ DPYV+VS KTSVKK
Sbjct: 15 RLTVVVLKARNLPPSDGKGLS--------------DPYVKVSLLQGGKKLKKKKTSVKKG 60
Query: 132 SYNPVWNEQIIF--SEMFPPLCSRIKIQLRDND-PVNNTVIG 170
+ NPV+NE F S + I + D D N VIG
Sbjct: 61 TLNPVFNEAFSFDVPAEQLEEVS-LVITVVDKDSVGRNEVIG 101
>gnl|CDD|176019 cd08373, C2A_Ferlin, C2 domain first repeat in Ferlin. Ferlins are
involved in vesicle fusion events. Ferlins and other
proteins, such as Synaptotagmins, are implicated in
facilitating the fusion process when cell membranes fuse
together. There are six known human Ferlins: Dysferlin
(Fer1L1), Otoferlin (Fer1L2), Myoferlin (Fer1L3),
Fer1L4, Fer1L5, and Fer1L6. Defects in these genes can
lead to a wide range of diseases including muscular
dystrophy (dysferlin), deafness (otoferlin), and
infertility (fer-1, fertilization factor-1).
Structurally they have 6 tandem C2 domains, designated
as (C2A-C2F) and a single C-terminal transmembrane
domain, though there is a new study that disputes this
and claims that there are actually 7 tandem C2 domains
with another C2 domain inserted between C2D and C2E.
In a subset of them (Dysferlin, Myoferlin, and Fer1)
there is an additional conserved domain called DysF. C2
domains fold into an 8-standed beta-sandwich that can
adopt 2 structural arrangements: Type I and Type II,
distinguished by a circular permutation involving their
N- and C-terminal beta strands. Many C2 domains are
Ca2+-dependent membrane-targeting modules that bind a
wide variety of substances including bind phospholipids,
inositol polyphosphates, and intracellular proteins.
Most C2 domain proteins are either signal transduction
enzymes that contain a single C2 domain, such as protein
kinase C, or membrane trafficking proteins which contain
at least two C2 domains, such as synaptotagmin 1.
However, there are a few exceptions to this including
RIM isoforms and some splice variants of piccolo/aczonin
and intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. This cd contains the first C2
repeat, C2A, and has a type-II topology.
Length = 127
Score = 43.4 bits (103), Expect = 6e-06
Identities = 23/79 (29%), Positives = 40/79 (50%), Gaps = 12/79 (15%)
Query: 112 DPYVQVSFAGLTGKTSVKKNSYNPVWNEQIIFSEMFPPLCSR------IKIQLRD-NDPV 164
D +V+F G+ KT V +N NPVWNE + PL ++I ++D
Sbjct: 16 DRIAKVTFRGVKKKTRVLENELNPVWNETFEW-----PLAGSPDPDESLEIVVKDYEKVG 70
Query: 165 NNTVIGTHYIDLKNISNDG 183
N +IG+ + L+++ ++G
Sbjct: 71 RNRLIGSATVSLQDLVSEG 89
>gnl|CDD|176049 cd08404, C2B_Synaptotagmin-4, C2 domain second repeat present in
Synaptotagmin 4. Synaptotagmin is a
membrane-trafficking protein characterized by a
N-terminal transmembrane region, a linker, and 2
C-terminal C2 domains. Synaptotagmin 4, a member of
class 4 synaptotagmins, is located in the brain. It
functions are unknown. It, like synaptotagmin-11, has an
Asp to Ser substitution in its C2A domain. Previously
all synaptotagmins were thought to be calcium sensors in
the regulation of neurotransmitter release and hormone
secretion, but it has been shown that not all of them
bind calcium. Of the 17 identified synaptotagmins only
8 bind calcium (1-3, 5-7, 9, 10). The function of the
two C2 domains that bind calcium are: regulating the
fusion step of synaptic vesicle exocytosis (C2A) and
binding to phosphatidyl-inositol-3,4,5-triphosphate
(PIP3) in the absence of calcium ions and to
phosphatidylinositol bisphosphate (PIP2) in their
presence (C2B). C2B also regulates also the recycling
step of synaptic vesicles. C2 domains fold into an
8-standed beta-sandwich that can adopt 2 structural
arrangements: Type I and Type II, distinguished by a
circular permutation involving their N- and C-terminal
beta strands. Many C2 domains are Ca2+-dependent
membrane-targeting modules that bind a wide variety of
substances including bind phospholipids, inositol
polyphosphates, and intracellular proteins. Most C2
domain proteins are either signal transduction enzymes
that contain a single C2 domain, such as protein kinase
C, or membrane trafficking proteins which contain at
least two C2 domains, such as synaptotagmin 1. However,
there are a few exceptions to this including RIM
isoforms and some splice variants of piccolo/aczonin and
intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. This cd contains the second C2
repeat, C2B, and has a type-I topology.
Length = 136
Score = 43.2 bits (102), Expect = 9e-06
Identities = 35/118 (29%), Positives = 50/118 (42%), Gaps = 33/118 (27%)
Query: 84 RADGLPKMNSSLVANVKKAFTGETKDLVDPYVQVSFAGLTG-------KTSVKKNSYNPV 136
+A LPKM+ S +A DPYV+V+ G KT VKK + NPV
Sbjct: 23 KARHLPKMDVSGLA--------------DPYVKVNL--YYGKKRISKKKTHVKKCTLNPV 66
Query: 137 WNEQIIFSEMFPPLCSR-----IKIQLRDNDPVN-NTVIGTHYIDLKNISNDGDKGKD 188
+NE +F P ++ + D+D V N VIG + K + G K+
Sbjct: 67 FNESFVFD--IP--SEELEDISVEFLVLDSDRVTKNEVIGRLVLGPKASGSGGHHWKE 120
>gnl|CDD|175981 cd04014, C2_PKC_epsilon, C2 domain in Protein Kinase C (PKC)
epsilon. A single C2 domain is found in PKC epsilon.
The PKC family of serine/threonine kinases regulates
apoptosis, proliferation, migration, motility,
chemo-resistance, and differentiation. There are 3
groups: group 1 (alpha, betaI, beta II, gamma) which
require phospholipids and calcium, group 2 (delta,
epsilon, theta, eta) which do not require calcium for
activation, and group 3 (xi, iota/lambda) which are
atypical and can be activated in the absence of
diacylglycerol and calcium. C2 domains fold into an
8-standed beta-sandwich that can adopt 2 structural
arrangements: Type I and Type II, distinguished by a
circular permutation involving their N- and C-terminal
beta strands. Many C2 domains are Ca2+-dependent
membrane-targeting modules that bind a wide variety of
substances including bind phospholipids, inositol
polyphosphates, and intracellular proteins. Most C2
domain proteins are either signal transduction enzymes
that contain a single C2 domain, such as protein kinase
C, or membrane trafficking proteins which contain at
least two C2 domains, such as synaptotagmin 1. However,
there are a few exceptions to this including RIM
isoforms and some splice variants of piccolo/aczonin and
intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. Members here have a type-II
topology.
Length = 132
Score = 42.6 bits (101), Expect = 1e-05
Identities = 21/64 (32%), Positives = 30/64 (46%), Gaps = 5/64 (7%)
Query: 80 IRIYRADGLPKMNSSLVANVKKAFTGETKDLVDPYVQVSF-AGLTGKTSVKKNSYNPVWN 138
I+I A L + S + A + L+DPYV + GKTS K + +PVWN
Sbjct: 8 IKICEAVDLKPTDWST----RHAVPKKGSQLLDPYVSIDVDDTHIGKTSTKPKTNSPVWN 63
Query: 139 EQII 142
E+
Sbjct: 64 EEFT 67
>gnl|CDD|176006 cd04041, C2A_fungal, C2 domain first repeat; fungal group. C2
domains were first identified in Protein Kinase C (PKC).
C2 domains fold into an 8-standed beta-sandwich that can
adopt 2 structural arrangements: Type I and Type II,
distinguished by a circular permutation involving their
N- and C-terminal beta strands. Many C2 domains are
Ca2+-dependent membrane-targeting modules that bind a
wide variety of substances including bind phospholipids,
inositol polyphosphates, and intracellular proteins.
Most C2 domain proteins are either signal transduction
enzymes that contain a single C2 domain, such as protein
kinase C, or membrane trafficking proteins which contain
at least two C2 domains, such as synaptotagmin 1.
However, there are a few exceptions to this including
RIM isoforms and some splice variants of piccolo/aczonin
and intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions.
Length = 111
Score = 41.5 bits (98), Expect = 2e-05
Identities = 32/116 (27%), Positives = 47/116 (40%), Gaps = 23/116 (19%)
Query: 78 FIIRIYRADGLPKMNSSLVANVKKAFTGETKDLVDPYVQVSFAGLTGK----TSVKKNSY 133
++ I+RA LPK + + DPYV SFA GK T + +
Sbjct: 3 LVVTIHRATDLPKAD----FGTGSS---------DPYVTASFAKF-GKPLYSTRIIRKDL 48
Query: 134 NPVWNEQIIFSEMFPPLCS---RIKIQLRDNDPVN-NTVIGTHYIDLKNISNDGDK 185
NPVW E + P R+ +L D+D + +G IDLK + D +
Sbjct: 49 NPVWEETWFVL-VTPDEVKAGERLSCRLWDSDRFTADDRLGRVEIDLKELIEDRNW 103
>gnl|CDD|176000 cd04035, C2A_Rabphilin_Doc2, C2 domain first repeat present in
Rabphilin and Double C2 domain. Rabphilin is found
neurons and in neuroendrocrine cells, while Doc2 is
found not only in the brain but in tissues, including
mast cells, chromaffin cells, and osteoblasts.
Rabphilin and Doc2s share highly homologous tandem C2
domains, although their N-terminal structures are
completely different: rabphilin contains an N-terminal
Rab-binding domain (RBD),7 whereas Doc2 contains an
N-terminal Munc13-1-interacting domain (MID). C2 domains
fold into an 8-standed beta-sandwich that can adopt 2
structural arrangements: Type I and Type II,
distinguished by a circular permutation involving their
N- and C-terminal beta strands. Many C2 domains are
Ca2+-dependent membrane-targeting modules that bind a
wide variety of substances including bind phospholipids,
inositol polyphosphates, and intracellular proteins.
Most C2 domain proteins are either signal transduction
enzymes that contain a single C2 domain, such as protein
kinase C, or membrane trafficking proteins which contain
at least two C2 domains, such as synaptotagmin 1.
However, there are a few exceptions to this including
RIM isoforms and some splice variants of piccolo/aczonin
and intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. This cd contains the first C2
repeat, C2A, and has a type-I topology.
Length = 123
Score = 41.5 bits (98), Expect = 3e-05
Identities = 26/111 (23%), Positives = 45/111 (40%), Gaps = 25/111 (22%)
Query: 81 RIYRADGLPKMNSSLVANVKKAFTGETKDLVDPYVQVSFAGLTG-------KTSVKKNSY 133
I RA GL M+++ L DPYV+++ L G +T +
Sbjct: 20 TIIRAKGLKAMDAN--------------GLSDPYVKLNL--LPGASKATKLRTKTVHKTR 63
Query: 134 NPVWNEQIIFSEMFPPLCSR--IKIQLRDNDPVNNTVIGTHYIDLKNISND 182
NP +NE + + + R +++ + D D N +G I LK + +
Sbjct: 64 NPEFNETLTYYGITEEDIQRKTLRLLVLDEDRFGNDFLGETRIPLKKLKPN 114
>gnl|CDD|175991 cd04025, C2B_RasA1_RasA4, C2 domain second repeat present in RasA1
and RasA4. RasA1 and RasA4 are GAP1s (GTPase activating
protein 1s ), Ras-specific GAP members, which suppresses
Ras function by enhancing the GTPase activity of Ras
proteins resulting in the inactive GDP-bound form of
Ras. In this way it can control cellular proliferation
and differentiation. Both proteins contain two C2
domains, a Ras-GAP domain, a plextrin homology
(PH)-like domain, and a Bruton's Tyrosine Kinase (BTK)
zinc binding domain. C2 domains fold into an 8-standed
beta-sandwich that can adopt 2 structural arrangements:
Type I and Type II, distinguished by a circular
permutation involving their N- and C-terminal beta
strands. Many C2 domains are Ca2+-dependent
membrane-targeting modules that bind a wide variety of
substances including bind phospholipids, inositol
polyphosphates, and intracellular proteins. Most C2
domain proteins are either signal transduction enzymes
that contain a single C2 domain, such as protein kinase
C, or membrane trafficking proteins which contain at
least two C2 domains, such as synaptotagmin 1. However,
there are a few exceptions to this including RIM
isoforms and some splice variants of piccolo/aczonin and
intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. This cd contains the second C2
repeat, C2B, and has a type-I topology.
Length = 123
Score = 40.2 bits (94), Expect = 9e-05
Identities = 23/67 (34%), Positives = 35/67 (52%), Gaps = 2/67 (2%)
Query: 112 DPYVQVSFAGLTGKTSVKKNSYNPVWNEQIIFSEMFPPLCSRIKIQLRDNDPVN-NTVIG 170
DP+V+V + G T +TSV K S P WNE F M S + +++ D D V+ N +G
Sbjct: 22 DPFVRVFYNGQTLETSVVKKSCYPRWNEVFEFELM-EGADSPLSVEVWDWDLVSKNDFLG 80
Query: 171 THYIDLK 177
++
Sbjct: 81 KVVFSIQ 87
>gnl|CDD|176048 cd08403, C2B_Synaptotagmin-3-5-6-9-10, C2 domain second repeat
present in Synaptotagmins 3, 5, 6, 9, and 10.
Synaptotagmin is a membrane-trafficking protein
characterized by a N-terminal transmembrane region, a
linker, and 2 C-terminal C2 domains. Synaptotagmin 3, a
member of class 3 synaptotagmins, is located in the
brain and localized to the active zone and plasma
membrane. It functions as a Ca2+ sensor for fast
exocytosis. It, along with synaptotagmins 5,6, and 10,
has disulfide bonds at its N-terminus. Synaptotagmin 9,
a class 5 synaptotagmins, is located in the brain and
localized to the synaptic vesicles. It is thought to be
a Ca2+-sensor for dense-core vesicle exocytosis.
Previously all synaptotagmins were thought to be calcium
sensors in the regulation of neurotransmitter release
and hormone secretion, but it has been shown that not
all of them bind calcium. Of the 17 identified
synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10).
The function of the two C2 domains that bind calcium
are: regulating the fusion step of synaptic vesicle
exocytosis (C2A) and binding to
phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the
absence of calcium ions and to phosphatidylinositol
bisphosphate (PIP2) in their presence (C2B). C2B also
regulates also the recycling step of synaptic vesicles.
C2 domains fold into an 8-standed beta-sandwich that can
adopt 2 structural arrangements: Type I and Type II,
distinguished by a circular permutation involving their
N- and C-terminal beta strands. Many C2 domains are
Ca2+-dependent membrane-targeting modules that bind a
wide variety of substances including bind phospholipids,
inositol polyphosphates, and intracellular proteins.
Most C2 domain proteins are either signal transduction
enzymes that contain a single C2 domain, such as protein
kinase C, or membrane trafficking proteins which contain
at least two C2 domains, such as synaptotagmin 1.
However, there are a few exceptions to this including
RIM isoforms and some splice variants of piccolo/aczonin
and intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. This cd contains the second C2
repeat, C2B, and has a type-I topology.
Length = 134
Score = 39.8 bits (93), Expect = 1e-04
Identities = 22/57 (38%), Positives = 30/57 (52%), Gaps = 8/57 (14%)
Query: 95 LVANVKKAFTGETKDLV---DPYVQVSFAG-----LTGKTSVKKNSYNPVWNEQIIF 143
L + KA + D+ DPYV+VS KTSVKKN+ NP +NE ++F
Sbjct: 16 LTLTIIKARNLKAMDITGFSDPYVKVSLMCEGRRLKKKKTSVKKNTLNPTYNEALVF 72
>gnl|CDD|176057 cd08675, C2B_RasGAP, C2 domain second repeat of Ras GTPase
activating proteins (GAPs). RasGAPs suppress Ras
function by enhancing the GTPase activity of Ras
proteins resulting in the inactive GDP-bound form of
Ras. In this way it can control cellular proliferation
and differentiation. The proteins here all contain two
tandem C2 domains, a Ras-GAP domain, and a pleckstrin
homology (PH)-like domain. C2 domains fold into an
8-standed beta-sandwich that can adopt 2 structural
arrangements: Type I and Type II, distinguished by a
circular permutation involving their N- and C-terminal
beta strands. Many C2 domains are Ca2+-dependent
membrane-targeting modules that bind a wide variety of
substances including bind phospholipids, inositol
polyphosphates, and intracellular proteins. Most C2
domain proteins are either signal transduction enzymes
that contain a single C2 domain, such as protein kinase
C, or membrane trafficking proteins which contain at
least two C2 domains, such as synaptotagmin 1. However,
there are a few exceptions to this including RIM
isoforms and some splice variants of piccolo/aczonin and
intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. Members here have a type-I
topology.
Length = 137
Score = 39.7 bits (93), Expect = 2e-04
Identities = 15/78 (19%), Positives = 31/78 (39%), Gaps = 8/78 (10%)
Query: 112 DPYVQVSFAGL----TGKTSVKKNSYNPVWNEQIIFSEMFPPLCSRIKIQLRDNDPVNNT 167
DP+ +V+ T +T VKK + NP ++E F + ++ + D +
Sbjct: 20 DPFARVTLNYSSKTDTKRTKVKKKTNNPRFDEAFYFELTIGFSYEKKSFKVEEEDLEKSE 79
Query: 168 VIGTHYIDLKNISNDGDK 185
+ ++L + S
Sbjct: 80 LR----VELWHASMVSGD 93
>gnl|CDD|176032 cd08386, C2A_Synaptotagmin-7, C2A domain first repeat present in
Synaptotagmin 7. Synaptotagmin is a
membrane-trafficking protein characterized by a
N-terminal transmembrane region, a linker, and 2
C-terminal C2 domains. Synaptotagmin 7, a member of
class 2 synaptotagmins, is located in presynaptic plasma
membranes in neurons, dense-core vesicles in endocrine
cells, and lysosomes in fibroblasts. It has been shown
to play a role in regulation of Ca2+-dependent lysosomal
exocytosis in fibroblasts and may also function as a
vesicular Ca2+-sensor. It is distinguished from the
other synaptotagmins by having over 12 splice forms.
Previously all synaptotagmins were thought to be calcium
sensors in the regulation of neurotransmitter release
and hormone secretion, but it has been shown that not
all of them bind calcium. Of the 17 identified
synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10).
The function of the two C2 domains that bind calcium
are: regulating the fusion step of synaptic vesicle
exocytosis (C2A) and binding to
phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the
absence of calcium ions and to phosphatidylinositol
bisphosphate (PIP2) in their presence (C2B). C2B also
regulates also the recycling step of synaptic vesicles.
C2 domains fold into an 8-standed beta-sandwich that can
adopt 2 structural arrangements: Type I and Type II,
distinguished by a circular permutation involving their
N- and C-terminal beta strands. Many C2 domains are
Ca2+-dependent membrane-targeting modules that bind a
wide variety of substances including bind phospholipids,
inositol polyphosphates, and intracellular proteins.
Most C2 domain proteins are either signal transduction
enzymes that contain a single C2 domain, such as protein
kinase C, or membrane trafficking proteins which contain
at least two C2 domains, such as synaptotagmin 1.
However, there are a few exceptions to this including
RIM isoforms and some splice variants of piccolo/aczonin
and intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. This cd contains the first C2
repeat, C2A, and has a type-I topology.
Length = 125
Score = 39.2 bits (92), Expect = 2e-04
Identities = 34/113 (30%), Positives = 50/113 (44%), Gaps = 20/113 (17%)
Query: 81 RIYRADGLPKMNSSLVANVKKAFTGETKDL---VDPYVQVSFAGLTGK-----TSVKKNS 132
RI + S+L + KA KD DP+V++ L K T VK+ +
Sbjct: 4 RIQFSVSYDFQESTLTLKILKAVELPAKDFSGTSDPFVKIYL--LPDKKHKLETKVKRKN 61
Query: 133 YNPVWNEQIIFSEMFP--PLCSRI-KIQLRD------NDPVNNTVIGTHYIDL 176
NP WNE +F E FP L R+ +Q+ D NDP+ + + +DL
Sbjct: 62 LNPHWNETFLF-EGFPYEKLQQRVLYLQVLDYDRFSRNDPIGEVSLPLNKVDL 113
>gnl|CDD|175988 cd04021, C2_E3_ubiquitin_ligase, C2 domain present in E3 ubiquitin
ligase. E3 ubiquitin ligase is part of the
ubiquitylation mechanism responsible for controlling
surface expression of membrane proteins. The sequential
action of several enzymes are involved:
ubiquitin-activating enzyme E1, ubiquitin-conjugating
enzyme E2, and ubiquitin-protein ligase E3 which is
responsible for substrate recognition and promoting the
transfer of ubiquitin to the target protein. E3
ubiquitin ligase is composed of an N-terminal C2 domain,
4 WW domains, and a HECTc domain. C2 domains fold into
an 8-standed beta-sandwich that can adopt 2 structural
arrangements: Type I and Type II, distinguished by a
circular permutation involving their N- and C-terminal
beta strands. Many C2 domains are Ca2+-dependent
membrane-targeting modules that bind a wide variety of
substances including bind phospholipids, inositol
polyphosphates, and intracellular proteins. Most C2
domain proteins are either signal transduction enzymes
that contain a single C2 domain, such as protein kinase
C, or membrane trafficking proteins which contain at
least two C2 domains, such as synaptotagmin 1. However,
there are a few exceptions to this including RIM
isoforms and some splice variants of piccolo/aczonin and
intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions.
Length = 125
Score = 38.8 bits (91), Expect = 3e-04
Identities = 15/32 (46%), Positives = 18/32 (56%), Gaps = 1/32 (3%)
Query: 112 DPYVQVSFAGL-TGKTSVKKNSYNPVWNEQII 142
DPYV+V+ G KT V K + NP WNE
Sbjct: 23 DPYVEVTVDGQPPKKTEVSKKTSNPKWNEHFT 54
>gnl|CDD|178585 PLN03008, PLN03008, Phospholipase D delta.
Length = 868
Score = 40.5 bits (94), Expect = 3e-04
Identities = 24/71 (33%), Positives = 40/71 (56%), Gaps = 3/71 (4%)
Query: 112 DPYVQVSFAGLT-GKTSVKKNSYNPVWNEQIIFSEMFPPLCSRIKIQLRDNDPVNNTVIG 170
DPYV V T +T V KNS P+W+E+ S P + ++ Q++D+D +IG
Sbjct: 78 DPYVTVVVPQATLARTRVLKNSQEPLWDEKFNISIAHP--FAYLEFQVKDDDVFGAQIIG 135
Query: 171 THYIDLKNISN 181
T I +++I++
Sbjct: 136 TAKIPVRDIAS 146
>gnl|CDD|176056 cd08521, C2A_SLP, C2 domain first repeat present in
Synaptotagmin-like proteins. All Slp members basically
share an N-terminal Slp homology domain (SHD) and
C-terminal tandem C2 domains (named the C2A domain and
the C2B domain) with the SHD and C2 domains being
separated by a linker sequence of various length.
Slp1/JFC1 and Slp2/exophilin 4 promote granule docking
to the plasma membrane. Additionally, their C2A domains
are both Ca2+ independent, unlike the case in Slp3 and
Slp4/granuphilin in which their C2A domains are Ca2+
dependent. It is thought that SHD (except for the
Slp4-SHD) functions as a specific Rab27A/B-binding
domain. In addition to Slps, rabphilin, Noc2, and
Munc13-4 also function as Rab27-binding proteins. It has
been demonstrated that Slp3 and Slp4/granuphilin promote
dense-core vesicle exocytosis. Slp5 mRNA has been shown
to be restricted to human placenta and liver suggesting
a role in Rab27A-dependent membrane trafficking in
specific tissues. C2 domains fold into an 8-standed
beta-sandwich that can adopt 2 structural arrangements:
Type I and Type II, distinguished by a circular
permutation involving their N- and C-terminal beta
strands. Many C2 domains are Ca2+-dependent
membrane-targeting modules that bind a wide variety of
substances including bind phospholipids, inositol
polyphosphates, and intracellular proteins. Most C2
domain proteins are either signal transduction enzymes
that contain a single C2 domain, such as protein kinase
C, or membrane trafficking proteins which contain at
least two C2 domains, such as synaptotagmin 1. However,
there are a few exceptions to this including RIM
isoforms and some splice variants of piccolo/aczonin and
intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. This cd contains the first
C2 repeat, C2A, and has a type-I topology.
Length = 123
Score = 38.4 bits (90), Expect = 3e-04
Identities = 23/57 (40%), Positives = 31/57 (54%), Gaps = 11/57 (19%)
Query: 93 SSLVANVKK----AFTGETKDLVDPYVQV------SFAGLTGKTSVKKNSYNPVWNE 139
SL ++K+ A+ E K +PYV+V S KTSVKKN+ NPV+NE
Sbjct: 14 GSLEVHIKECRNLAYADEKKKRSNPYVKVYLLPDKSKQS-KRKTSVKKNTTNPVFNE 69
>gnl|CDD|175997 cd04031, C2A_RIM1alpha, C2 domain first repeat contained in
Rab3-interacting molecule (RIM) proteins. RIMs are
believed to organize specialized sites of the plasma
membrane called active zones. They also play a role in
controlling neurotransmitter release, plasticity
processes, as well as memory and learning. RIM contains
an N-terminal zinc finger domain, a PDZ domain, and two
C-terminal C2 domains (C2A, C2B). C2 domains fold into
an 8-standed beta-sandwich that can adopt 2 structural
arrangements: Type I and Type II, distinguished by a
circular permutation involving their N- and C-terminal
beta strands. Many C2 domains are Ca2+-dependent
membrane-targeting modules that bind a wide variety of
substances including bind phospholipids, inositol
polyphosphates, and intracellular proteins. Most C2
domain proteins are either signal transduction enzymes
that contain a single C2 domain, such as protein kinase
C, or membrane trafficking proteins which contain at
least two C2 domains, such as synaptotagmin 1. However,
there are a few exceptions to this including RIM
isoforms and some splice variants of piccolo/aczonin and
intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. Members here have a type-I
topology and do not bind Ca2+.
Length = 125
Score = 38.0 bits (89), Expect = 5e-04
Identities = 26/115 (22%), Positives = 46/115 (40%), Gaps = 22/115 (19%)
Query: 72 ERQHARFIIRIYRADGLPKMNSSLVANVKKAFTGETKDLVDPYVQVSF---AGLTGK--T 126
++ ++ I+ + +A LP + L +PYV+V K T
Sbjct: 12 DKVTSQLIVTVLQARDLPPRDDG--------------SLRNPYVKVYLLPDRSEKSKRRT 57
Query: 127 SVKKNSYNPVWNEQIIFSEMFPP-LCSR-IKIQLRDNDPVN-NTVIGTHYIDLKN 178
K + NP WN+ +S + L R +++ + D D N +G IDL +
Sbjct: 58 KTVKKTLNPEWNQTFEYSNVRRETLKERTLEVTVWDYDRDGENDFLGEVVIDLAD 112
>gnl|CDD|175996 cd04030, C2C_KIAA1228, C2 domain third repeat present in
uncharacterized human KIAA1228-like proteins. KIAA
proteins are uncharacterized human proteins. They were
compiled by the Kazusa mammalian cDNA project which
identified more than 2000 human genes. They are
identified by 4 digit codes that precede the KIAA
designation. Many KIAA genes are still functionally
uncharacterized including KIAA1228. C2 domains fold into
an 8-standed beta-sandwich that can adopt 2 structural
arrangements: Type I and Type II, distinguished by a
circular permutation involving their N- and C-terminal
beta strands. Many C2 domains are Ca2+-dependent
membrane-targeting modules that bind a wide variety of
substances including bind phospholipids, inositol
polyphosphates, and intracellular proteins. Most C2
domain proteins are either signal transduction enzymes
that contain a single C2 domain, such as protein kinase
C, or membrane trafficking proteins which contain at
least two C2 domains, such as synaptotagmin 1. However,
there are a few exceptions to this including RIM
isoforms and some splice variants of piccolo/aczonin and
intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. This cd contains the third C2
repeat, C2C, and has a type-II topology.
Length = 127
Score = 37.6 bits (88), Expect = 7e-04
Identities = 22/76 (28%), Positives = 35/76 (46%), Gaps = 19/76 (25%)
Query: 74 QHARFIIRIYRADGLPKMNSSLVANVKKAFTGETKDLVDPYVQVSF-----AGLTGKTSV 128
Q + I+ +++ LP +SS D+ DPYV++ KTSV
Sbjct: 14 QRQKLIVTVHKCRNLPPCDSS--------------DIPDPYVRLYLLPDKSKSTRRKTSV 59
Query: 129 KKNSYNPVWNEQIIFS 144
KK++ NPV++E F
Sbjct: 60 KKDNLNPVFDETFEFP 75
>gnl|CDD|176005 cd04040, C2D_Tricalbin-like, C2 domain fourth repeat present in
Tricalbin-like proteins. 5 to 6 copies of the C2 domain
are present in Tricalbin, a yeast homolog of
Synaptotagmin, which is involved in membrane trafficking
and sorting. C2 domains fold into an 8-standed
beta-sandwich that can adopt 2 structural arrangements:
Type I and Type II, distinguished by a circular
permutation involving their N- and C-terminal beta
strands. Many C2 domains are Ca2+-dependent
membrane-targeting modules that bind a wide variety of
substances including bind phospholipids, inositol
polyphosphates, and intracellular proteins. Most C2
domain proteins are either signal transduction enzymes
that contain a single C2 domain, such as protein kinase
C, or membrane trafficking proteins which contain at
least two C2 domains, such as synaptotagmin 1. However,
there are a few exceptions to this including RIM
isoforms and some splice variants of piccolo/aczonin and
intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. This cd contains the fifth C2
repeat, C2E, and has a type-II topology.
Length = 115
Score = 37.2 bits (87), Expect = 8e-04
Identities = 24/74 (32%), Positives = 38/74 (51%), Gaps = 11/74 (14%)
Query: 112 DPYVQVSFAGLTG----KTSVKKNSYNPVWNEQIIFSEMFPPLC-SRIKIQLRDNDPVN- 165
DP+V+ L G KT K + NPVWNE F P + +K+++ D D
Sbjct: 21 DPFVKFY---LNGEKVFKTKTIKKTLNPVWNES--FEVPVPSRVRAVLKVEVYDWDRGGK 75
Query: 166 NTVIGTHYIDLKNI 179
+ ++G+ YIDL ++
Sbjct: 76 DDLLGSAYIDLSDL 89
>gnl|CDD|176010 cd04045, C2C_Tricalbin-like, C2 domain third repeat present in
Tricalbin-like proteins. 5 to 6 copies of the C2 domain
are present in Tricalbin, a yeast homolog of
Synaptotagmin, which is involved in membrane trafficking
and sorting. C2 domains fold into an 8-standed
beta-sandwich that can adopt 2 structural arrangements:
Type I and Type II, distinguished by a circular
permutation involving their N- and C-terminal beta
strands. Many C2 domains are Ca2+-dependent
membrane-targeting modules that bind a wide variety of
substances including bind phospholipids, inositol
polyphosphates, and intracellular proteins. Most C2
domain proteins are either signal transduction enzymes
that contain a single C2 domain, such as protein kinase
C, or membrane trafficking proteins which contain at
least two C2 domains, such as synaptotagmin 1. However,
there are a few exceptions to this including RIM
isoforms and some splice variants of piccolo/aczonin and
intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. This cd contains the third C2
repeat, C2C, and has a type-II topology.
Length = 120
Score = 37.2 bits (87), Expect = 0.001
Identities = 23/82 (28%), Positives = 44/82 (53%), Gaps = 10/82 (12%)
Query: 111 VDPYVQVSFAG-LTGKTSVKKNSYNPVWNEQIIFSEMFPPLCS---RIKIQLRDNDPVNN 166
+DPYV+V G + G+T N+ NPVW+E + + P+ S +I +++ D + V
Sbjct: 22 IDPYVRVLVNGIVKGRTVTISNTLNPVWDEVL-----YVPVTSPNQKITLEVMDYEKVGK 76
Query: 167 T-VIGTHYIDLKNISNDGDKGK 187
+G+ I++ ++ + GK
Sbjct: 77 DRSLGSVEINVSDLIKKNEDGK 98
>gnl|CDD|175989 cd04022, C2A_MCTP_PRT_plant, C2 domain first repeat found in
Multiple C2 domain and Transmembrane region Proteins
(MCTP); plant subset. MCTPs are involved in Ca2+
signaling at the membrane. Plant-MCTPs are composed of
a variable N-terminal sequence, four C2 domains, two
transmembrane regions (TMRs), and a short C-terminal
sequence. It is one of four protein classes that are
anchored to membranes via a transmembrane region; the
others being synaptotagmins, extended synaptotagmins,
and ferlins. MCTPs are the only membrane-bound C2 domain
proteins that contain two functional TMRs. MCTPs are
unique in that they bind Ca2+ but not phospholipids. C2
domains fold into an 8-standed beta-sandwich that can
adopt 2 structural arrangements: Type I and Type II,
distinguished by a circular permutation involving their
N- and C-terminal beta strands. Many C2 domains are
Ca2+-dependent membrane-targeting modules that bind a
wide variety of substances including bind phospholipids,
inositol polyphosphates, and intracellular proteins.
Most C2 domain proteins are either signal transduction
enzymes that contain a single C2 domain, such as protein
kinase C, or membrane trafficking proteins which contain
at least two C2 domains, such as synaptotagmin 1.
However, there are a few exceptions to this including
RIM isoforms and some splice variants of piccolo/aczonin
and intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. This cd contains the first C2
repeat, C2A, and has a type-II topology.
Length = 127
Score = 37.3 bits (87), Expect = 0.001
Identities = 13/34 (38%), Positives = 20/34 (58%)
Query: 111 VDPYVQVSFAGLTGKTSVKKNSYNPVWNEQIIFS 144
YV++ F G +T K NPVWNE+++F+
Sbjct: 21 SSAYVELDFDGQKKRTRTKPKDLNPVWNEKLVFN 54
>gnl|CDD|175990 cd04024, C2A_Synaptotagmin-like, C2 domain first repeat present in
Synaptotagmin-like proteins. Synaptotagmin is a
membrane-trafficking protein characterized by a
N-terminal transmembrane region, a linker, and 2
C-terminal C2 domains. Previously all synaptotagmins
were thought to be calcium sensors in the regulation of
neurotransmitter release and hormone secretion, but it
has been shown that not all of them bind calcium. Of
the 17 identified synaptotagmins only 8 bind calcium
(1-3, 5-7, 9, 10). The function of the two C2 domains
that bind calcium are: regulating the fusion step of
synaptic vesicle exocytosis (C2A) and binding to
phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the
absence of calcium ions and to phosphatidylinositol
bisphosphate (PIP2) in their presence (C2B). C2B also
regulates also the recycling step of synaptic vesicles.
C2 domains fold into an 8-standed beta-sandwich that can
adopt 2 structural arrangements: Type I and Type II,
distinguished by a circular permutation involving their
N- and C-terminal beta strands. Many C2 domains are
Ca2+-dependent membrane-targeting modules that bind a
wide variety of substances including bind phospholipids,
inositol polyphosphates, and intracellular proteins.
Most C2 domain proteins are either signal transduction
enzymes that contain a single C2 domain, such as protein
kinase C, or membrane trafficking proteins which contain
at least two C2 domains, such as synaptotagmin 1.
However, there are a few exceptions to this including
RIM isoforms and some splice variants of piccolo/aczonin
and intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. This cd contains the first C2
repeat, C2A, and has a type-I topology.
Length = 128
Score = 37.4 bits (87), Expect = 0.001
Identities = 27/92 (29%), Positives = 35/92 (38%), Gaps = 12/92 (13%)
Query: 106 ETKDLV----------DPYVQVSFAGLTGKTSVKKNSYNPVWNEQIIFSEMFPPLCSRIK 155
E KDL DPY +S KT N+ NP WN F +F +K
Sbjct: 9 EAKDLAAKDRSGKGKSDPYAILSVGAQRFKTQTIPNTLNPKWNYWCEF-PIFSAQNQLLK 67
Query: 156 IQLRDNDPVNN-TVIGTHYIDLKNISNDGDKG 186
+ L D D +G I L+ + DG G
Sbjct: 68 LILWDKDRFAGKDYLGEFDIALEEVFADGKTG 99
>gnl|CDD|176002 cd04037, C2E_Ferlin, C2 domain fifth repeat in Ferlin. Ferlins are
involved in vesicle fusion events. Ferlins and other
proteins, such as Synaptotagmins, are implicated in
facilitating the fusion process when cell membranes fuse
together. There are six known human Ferlins: Dysferlin
(Fer1L1), Otoferlin (Fer1L2), Myoferlin (Fer1L3),
Fer1L4, Fer1L5, and Fer1L6. Defects in these genes can
lead to a wide range of diseases including muscular
dystrophy (dysferlin), deafness (otoferlin), and
infertility (fer-1, fertilization factor-1).
Structurally they have 6 tandem C2 domains, designated
as (C2A-C2F) and a single C-terminal transmembrane
domain, though there is a new study that disputes this
and claims that there are actually 7 tandem C2 domains
with another C2 domain inserted between C2D and C2E.
In a subset of them (Dysferlin, Myoferlin, and Fer1)
there is an additional conserved domain called DysF. C2
domains fold into an 8-standed beta-sandwich that can
adopt 2 structural arrangements: Type I and Type II,
distinguished by a circular permutation involving their
N- and C-terminal beta strands. Many C2 domains are
Ca2+-dependent membrane-targeting modules that bind a
wide variety of substances including bind phospholipids,
inositol polyphosphates, and intracellular proteins.
Most C2 domain proteins are either signal transduction
enzymes that contain a single C2 domain, such as protein
kinase C, or membrane trafficking proteins which contain
at least two C2 domains, such as synaptotagmin 1.
However, there are a few exceptions to this including
RIM isoforms and some splice variants of piccolo/aczonin
and intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. This cd contains the fifth C2
repeat, C2E, and has a type-II topology.
Length = 124
Score = 37.1 bits (87), Expect = 0.001
Identities = 25/109 (22%), Positives = 44/109 (40%), Gaps = 28/109 (25%)
Query: 79 IIRIY--RADGLPKMNSSLVANVKKAFTGETKDLVDPYVQVSFAGLTGKTSV------KK 130
++R+Y RA L + + DPY+++ GK +
Sbjct: 1 LVRVYVVRARNLQPKDPN--------------GKSDPYLKIKL----GKKKINDRDNYIP 42
Query: 131 NSYNPVWNEQIIFSEMFPPLCSRIKIQLRDNDPVN-NTVIGTHYIDLKN 178
N+ NPV+ + P S +KI + D D + + +IG IDL++
Sbjct: 43 NTLNPVFGKMFELEATLP-GNSILKISVMDYDLLGSDDLIGETVIDLED 90
>gnl|CDD|176051 cd08406, C2B_Synaptotagmin-12, C2 domain second repeat present in
Synaptotagmin 12. Synaptotagmin is a
membrane-trafficking protein characterized by a
N-terminal transmembrane region, a linker, and 2
C-terminal C2 domains. Synaptotagmin 12, a member of
class 6 synaptotagmins, is located in the brain. It
functions are unknown. It, like synaptotagmins 8 and 13,
do not have any consensus Ca2+ binding sites. Previously
all synaptotagmins were thought to be calcium sensors in
the regulation of neurotransmitter release and hormone
secretion, but it has been shown that not all of them
bind calcium. Of the 17 identified synaptotagmins only
8 bind calcium (1-3, 5-7, 9, 10). The function of the
two C2 domains that bind calcium are: regulating the
fusion step of synaptic vesicle exocytosis (C2A) and
binding to phosphatidyl-inositol-3,4,5-triphosphate
(PIP3) in the absence of calcium ions and to
phosphatidylinositol bisphosphate (PIP2) in their
presence (C2B). C2B also regulates also the recycling
step of synaptic vesicles. C2 domains fold into an
8-standed beta-sandwich that can adopt 2 structural
arrangements: Type I and Type II, distinguished by a
circular permutation involving their N- and C-terminal
beta strands. Many C2 domains are Ca2+-dependent
membrane-targeting modules that bind a wide variety of
substances including bind phospholipids, inositol
polyphosphates, and intracellular proteins. Most C2
domain proteins are either signal transduction enzymes
that contain a single C2 domain, such as protein kinase
C, or membrane trafficking proteins which contain at
least two C2 domains, such as synaptotagmin 1. However,
there are a few exceptions to this including RIM
isoforms and some splice variants of piccolo/aczonin and
intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. This cd contains the second C2
repeat, C2B, and has a type-I topology.
Length = 136
Score = 37.1 bits (86), Expect = 0.001
Identities = 20/57 (35%), Positives = 29/57 (50%), Gaps = 8/57 (14%)
Query: 108 KDLVDPYVQVSFAG-----LTGKTSVKKNSYNPVWNEQIIFSEMFPPLCSRIKIQLR 159
K DP+V+V KTSVK++ NP++NE +IFS P + + LR
Sbjct: 33 KTTADPFVKVYLLQDGRKISKKKTSVKRDDTNPIFNEAMIFS--VPAI-VLQDLSLR 86
>gnl|CDD|175998 cd04032, C2_Perforin, C2 domain of Perforin. Perforin contains a
single copy of a C2 domain in its C-terminus and plays a
role in lymphocyte-mediated cytotoxicity. Mutations in
perforin leads to familial hemophagocytic
lymphohistiocytosis type 2. The function of perforin is
calcium dependent and the C2 domain is thought to confer
this binding to target cell membranes. C2 domains fold
into an 8-standed beta-sandwich that can adopt 2
structural arrangements: Type I and Type II,
distinguished by a circular permutation involving their
N- and C-terminal beta strands. Many C2 domains are
Ca2+-dependent membrane-targeting modules that bind a
wide variety of substances including bind phospholipids,
inositol polyphosphates, and intracellular proteins.
Most C2 domain proteins are either signal transduction
enzymes that contain a single C2 domain, such as protein
kinase C, or membrane trafficking proteins which contain
at least two C2 domains, such as synaptotagmin 1.
However, there are a few exceptions to this including
RIM isoforms and some splice variants of piccolo/aczonin
and intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions.
Length = 127
Score = 36.5 bits (85), Expect = 0.002
Identities = 26/94 (27%), Positives = 37/94 (39%), Gaps = 17/94 (18%)
Query: 70 PLERQHARFIIRIYRADGLPKMNSSLVANVKKAFTGETKDLVDPYVQVSFAGLTGKTSVK 129
P R A + + RA GL G+ D YV+V F G +T V
Sbjct: 22 PTRRGLATLTVTVLRATGL---------------WGDYFTSTDGYVKVFFGGQEKRTEVI 66
Query: 130 KNSYNPVWNEQIIF-SEMFPPLCSRIKIQLRDND 162
N+ NP WN F S P +++ ++ D D
Sbjct: 67 WNNNNPRWNATFDFGSVELSPG-GKLRFEVWDRD 99
>gnl|CDD|176060 cd08678, C2_C21orf25-like, C2 domain found in the Human chromosome
21 open reading frame 25 (C21orf25) protein. The
members in this cd are named after the Human C21orf25
which contains a single C2 domain. Several other
members contain a C1 domain downstream of the C2 domain.
No other information on this protein is currently
known. The C2 domain was first identified in PKC. C2
domains fold into an 8-standed beta-sandwich that can
adopt 2 structural arrangements: Type I and Type II,
distinguished by a circular permutation involving their
N- and C-terminal beta strands. Many C2 domains are
Ca2+-dependent membrane-targeting modules that bind a
wide variety of substances including bind phospholipids,
inositol polyphosphates, and intracellular proteins.
Most C2 domain proteins are either signal transduction
enzymes that contain a single C2 domain, such as protein
kinase C, or membrane trafficking proteins which contain
at least two C2 domains, such as synaptotagmin 1.
However, there are a few exceptions to this including
RIM isoforms and some splice variants of piccolo/aczonin
and intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions.
Length = 126
Score = 36.2 bits (84), Expect = 0.002
Identities = 18/72 (25%), Positives = 32/72 (44%), Gaps = 4/72 (5%)
Query: 95 LVANVKKAFTGETKDLVDPY--VQVSFAGLTGKTSVKKNSYNPVWNEQIIFSEMFPPLCS 152
LV N+K E +PY +++ ++S +KN+ NP W+E +F P
Sbjct: 2 LVKNIKANGLSEAAGSSNPYCVLEMDEPPQKYQSSTQKNTSNPFWDEHFLFE--LSPNSK 59
Query: 153 RIKIQLRDNDPV 164
+ ++ DN
Sbjct: 60 ELLFEVYDNGKK 71
>gnl|CDD|176024 cd08378, C2B_MCTP_PRT_plant, C2 domain second repeat found in
Multiple C2 domain and Transmembrane region Proteins
(MCTP); plant subset. MCTPs are involved in Ca2+
signaling at the membrane. Plant-MCTPs are composed of
a variable N-terminal sequence, four C2 domains, two
transmembrane regions (TMRs), and a short C-terminal
sequence. It is one of four protein classes that are
anchored to membranes via a transmembrane region; the
others being synaptotagmins, extended synaptotagmins,
and ferlins. MCTPs are the only membrane-bound C2 domain
proteins that contain two functional TMRs. MCTPs are
unique in that they bind Ca2+ but not phospholipids. C2
domains fold into an 8-standed beta-sandwich that can
adopt 2 structural arrangements: Type I and Type II,
distinguished by a circular permutation involving their
N- and C-terminal beta strands. Many C2 domains are
Ca2+-dependent membrane-targeting modules that bind a
wide variety of substances including bind phospholipids,
inositol polyphosphates, and intracellular proteins.
Most C2 domain proteins are either signal transduction
enzymes that contain a single C2 domain, such as protein
kinase C, or membrane trafficking proteins which contain
at least two C2 domains, such as synaptotagmin 1.
However, there are a few exceptions to this including
RIM isoforms and some splice variants of piccolo/aczonin
and intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. This cd contains the second C2
repeat, C2B, and has a type-II topology.
Length = 121
Score = 35.8 bits (83), Expect = 0.003
Identities = 23/100 (23%), Positives = 40/100 (40%), Gaps = 19/100 (19%)
Query: 80 IRIYRADGLPKMNSSLVANVKKAFTGETKDLVDPYVQVSFAGLTGKTSVKKNSYNPVWNE 139
+R+ +A GLP ++ DP V+V G T + + NP WN+
Sbjct: 4 VRVVKARGLPANSN------------------DPVVEVKLGNYKGSTKAIERTSNPEWNQ 45
Query: 140 QIIFSEMFPPLCSRIKIQLRDNDPVNNTVIGTHYIDLKNI 179
FS+ S +++ + D D + +G DL +
Sbjct: 46 VFAFSKDRLQ-GSTLEVSVWDKDKAKDDFLGGVCFDLSEV 84
>gnl|CDD|176014 cd04049, C2_putative_Elicitor-responsive_gene, C2 domain present in
the putative elicitor-responsive gene. In plants
elicitor-responsive proteins are triggered in response
to specific elicitor molecules such as glycolproteins,
peptides, carbohydrates and lipids. A host of defensive
responses are also triggered resulting in localized cell
death. Antimicrobial secondary metabolites, such as
phytoalexins, or defense-related proteins, including
pathogenesis-related (PR) proteins are also produced.
There is a single C2 domain present here. C2 domains
fold into an 8-standed beta-sandwich that can adopt 2
structural arrangements: Type I and Type II,
distinguished by a circular permutation involving their
N- and C-terminal beta strands. Many C2 domains are
Ca2+-dependent membrane-targeting modules that bind a
wide variety of substances including bind phospholipids,
inositol polyphosphates, and intracellular proteins.
Most C2 domain proteins are either signal transduction
enzymes that contain a single C2 domain, such as protein
kinase C, or membrane trafficking proteins which contain
at least two C2 domains, such as synaptotagmin 1.
However, there are a few exceptions to this including
RIM isoforms and some splice variants of piccolo/aczonin
and intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. Members have a type-II
topology.
Length = 124
Score = 35.4 bits (82), Expect = 0.004
Identities = 24/72 (33%), Positives = 33/72 (45%), Gaps = 4/72 (5%)
Query: 112 DPYVQVSFAGLTGKTSVKKNS-YNPVWNEQIIFSEMFPPLCSRIKIQLR--DNDPVN-NT 167
DPYV + K+ V K NP WNE+ F+ +P K+ LR D D + +
Sbjct: 23 DPYVIIQCRTQERKSKVAKGDGRNPEWNEKFKFTVEYPGWGGDTKLILRIMDKDNFSDDD 82
Query: 168 VIGTHYIDLKNI 179
IG I LK +
Sbjct: 83 FIGEATIHLKGL 94
>gnl|CDD|176063 cd08681, C2_fungal_Inn1p-like, C2 domain found in fungal Ingression
1 (Inn1) proteins. Saccharomyces cerevisiae Inn1
associates with the contractile actomyosin ring at the
end of mitosis and is needed for cytokinesis. The C2
domain of Inn1, located at the N-terminus, is required
for ingression of the plasma membrane. The C-terminus is
relatively unstructured and contains eight PXXP motifs
that are thought to mediate interaction of Inn1 with
other proteins with SH3 domains in the cytokinesis
proteins Hof1 (an F-BAR protein) and Cyk3 (whose
overexpression can restore primary septum formation in
Inn1Delta cells) as well as recruiting Inn1 to the
bud-neck by binding to Cyk3. Inn1 and Cyk3 appear to
cooperate in activating chitin synthase Chs2 for primary
septum formation, which allows coordination of
actomyosin ring contraction with ingression of the
cleavage furrow. It is thought that the C2 domain of
Inn1 helps to preserve the link between the actomyosin
ring and the plasma membrane, contributing both to
membrane ingression, as well as to stability of the
contracting ring. Additionally, Inn1 might induce
curvature of the plasma membrane adjacent to the
contracting ring, thereby promoting ingression of the
membrane. It has been shown that the C2 domain of human
synaptotagmin induces curvature in target membranes and
thereby contributes to fusion of these membranes with
synaptic vesicles. The C2 domain was first identified in
PKC. C2 domains fold into an 8-standed beta-sandwich
that can adopt 2 structural arrangements: Type I and
Type II, distinguished by a circular permutation
involving their N- and C-terminal beta strands. Many C2
domains are Ca2+-dependent membrane-targeting modules
that bind a wide variety of substances including bind
phospholipids, inositol polyphosphates, and
intracellular proteins. Most C2 domain proteins are
either signal transduction enzymes that contain a single
C2 domain, such as protein kinase C, or membrane
trafficking proteins which contain at least two C2
domains, such as synaptotagmin1. However, there are a
few exceptions to this including RIM isoforms and some
splice variants of piccolo/aczonin and intersectin which
only have a single C2 domain. C2 domains with a calcium
binding region have negatively charged residues,
primarily aspartates, that serve as ligands for calcium
ions.
Length = 118
Score = 35.3 bits (82), Expect = 0.004
Identities = 19/69 (27%), Positives = 33/69 (47%), Gaps = 2/69 (2%)
Query: 112 DPYVQVSFAGLTGKTSV-KKNSYNPVWNEQIIFSEMFPPLCSRIKIQLRDNDPVNNTVIG 170
DPY + G+T KT + +P W+E++ F E+ +K+ + D+D +IG
Sbjct: 23 DPYCVLRIGGVTKKTKTDFRGGQHPEWDEELRF-EITEDKKPILKVAVFDDDKRKPDLIG 81
Query: 171 THYIDLKNI 179
+DL
Sbjct: 82 DTEVDLSPA 90
>gnl|CDD|176050 cd08405, C2B_Synaptotagmin-7, C2 domain second repeat present in
Synaptotagmin 7. Synaptotagmin is a
membrane-trafficking protein characterized by a
N-terminal transmembrane region, a linker, and 2
C-terminal C2 domains. Synaptotagmin 7, a member of
class 2 synaptotagmins, is located in presynaptic plasma
membranes in neurons, dense-core vesicles in endocrine
cells, and lysosomes in fibroblasts. It has been shown
to play a role in regulation of Ca2+-dependent lysosomal
exocytosis in fibroblasts and may also function as a
vesicular Ca2+-sensor. It is distinguished from the
other synaptotagmins by having over 12 splice forms.
Previously all synaptotagmins were thought to be calcium
sensors in the regulation of neurotransmitter release
and hormone secretion, but it has been shown that not
all of them bind calcium. Of the 17 identified
synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10).
The function of the two C2 domains that bind calcium
are: regulating the fusion step of synaptic vesicle
exocytosis (C2A) and binding to
phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the
absence of calcium ions and to phosphatidylinositol
bisphosphate (PIP2) in their presence (C2B). C2B also
regulates also the recycling step of synaptic vesicles.
C2 domains fold into an 8-standed beta-sandwich that can
adopt 2 structural arrangements: Type I and Type II,
distinguished by a circular permutation involving their
N- and C-terminal beta strands. Many C2 domains are
Ca2+-dependent membrane-targeting modules that bind a
wide variety of substances including bind phospholipids,
inositol polyphosphates, and intracellular proteins.
Most C2 domain proteins are either signal transduction
enzymes that contain a single C2 domain, such as protein
kinase C, or membrane trafficking proteins which contain
at least two C2 domains, such as synaptotagmin 1.
However, there are a few exceptions to this including
RIM isoforms and some splice variants of piccolo/aczonin
and intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. This cd contains the second C2
repeat, C2B, and has a type-I topology.
Length = 136
Score = 35.5 bits (82), Expect = 0.004
Identities = 20/63 (31%), Positives = 30/63 (47%), Gaps = 12/63 (19%)
Query: 91 MNSSLVANVKKAFTGETKDL---VDPYVQVSFAGLTG-------KTSVKKNSYNPVWNEQ 140
+ + N+ KA + D+ DPYV+V + KT +KK + NPV+NE
Sbjct: 13 TANRITVNIIKARNLKAMDINGTSDPYVKVWL--MYKDKRVEKKKTVIKKRTLNPVFNES 70
Query: 141 IIF 143
IF
Sbjct: 71 FIF 73
>gnl|CDD|176011 cd04046, C2_Calpain, C2 domain present in Calpain proteins. A
single C2 domain is found in calpains (EC 3.4.22.52, EC
3.4.22.53), calcium-dependent, non-lysosomal cysteine
proteases. Caplains are classified as belonging to Clan
CA by MEROPS and include six families: C1, C2, C10, C12,
C28, and C47. C2 domains fold into an 8-standed
beta-sandwich that can adopt 2 structural arrangements:
Type I and Type II, distinguished by a circular
permutation involving their N- and C-terminal beta
strands. Many C2 domains are Ca2+-dependent
membrane-targeting modules that bind a wide variety of
substances including bind phospholipids, inositol
polyphosphates, and intracellular proteins. Most C2
domain proteins are either signal transduction enzymes
that contain a single C2 domain, such as protein kinase
C, or membrane trafficking proteins which contain at
least two C2 domains, such as synaptotagmin 1. However,
there are a few exceptions to this including RIM
isoforms and some splice variants of piccolo/aczonin and
intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions.
Length = 126
Score = 35.3 bits (82), Expect = 0.004
Identities = 17/64 (26%), Positives = 32/64 (50%), Gaps = 14/64 (21%)
Query: 80 IRIYRADGLPKMNSSLVANVKKAFTGETKDLVDPYVQVSFAGLTGKTSVKKNSYNPVWNE 139
+ ++ A+GL K +S A DPYV + G + ++ V+K++ +P ++
Sbjct: 7 VHVHSAEGLSKQDSGGGA--------------DPYVIIKCEGESVRSPVQKDTLSPEFDT 52
Query: 140 QIIF 143
Q IF
Sbjct: 53 QAIF 56
>gnl|CDD|176015 cd04050, C2B_Synaptotagmin-like, C2 domain second repeat present in
Synaptotagmin-like proteins. Synaptotagmin is a
membrane-trafficking protein characterized by a
N-terminal transmembrane region, a linker, and 2
C-terminal C2 domains. Previously all synaptotagmins
were thought to be calcium sensors in the regulation of
neurotransmitter release and hormone secretion, but it
has been shown that not all of them bind calcium. Of
the 17 identified synaptotagmins only 8 bind calcium
(1-3, 5-7, 9, 10). The function of the two C2 domains
that bind calcium are: regulating the fusion step of
synaptic vesicle exocytosis (C2A) and binding to
phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the
absence of calcium ions and to phosphatidylinositol
bisphosphate (PIP2) in their presence (C2B). C2B also
regulates also the recycling step of synaptic vesicles.
C2 domains fold into an 8-standed beta-sandwich that can
adopt 2 structural arrangements: Type I and Type II,
distinguished by a circular permutation involving their
N- and C-terminal beta strands. Many C2 domains are
Ca2+-dependent membrane-targeting modules that bind a
wide variety of substances including bind phospholipids,
inositol polyphosphates, and intracellular proteins.
Most C2 domain proteins are either signal transduction
enzymes that contain a single C2 domain, such as protein
kinase C, or membrane trafficking proteins which contain
at least two C2 domains, such as synaptotagmin 1.
However, there are a few exceptions to this including
RIM isoforms and some splice variants of piccolo/aczonin
and intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. This cd contains the second C2
repeat, C2B, and has a type-I topology.
Length = 105
Score = 34.1 bits (79), Expect = 0.009
Identities = 16/53 (30%), Positives = 28/53 (52%), Gaps = 5/53 (9%)
Query: 112 DPYVQVSFAGLTGKTSVKKNSYNPVWNEQIIFSEMF--PPLCSRIKIQLRDND 162
PYV+++ T K+ VK+ + NPVW E F P ++I+++D+
Sbjct: 22 SPYVELTVGKTTQKSKVKERTNNPVWEEGFTF---LVRNPENQELEIEVKDDK 71
>gnl|CDD|176047 cd08402, C2B_Synaptotagmin-1, C2 domain second repeat present in
Synaptotagmin 1. Synaptotagmin is a
membrane-trafficking protein characterized by a
N-terminal transmembrane region, a linker, and 2
C-terminal C2 domains. Synaptotagmin 1, a member of the
class 1 synaptotagmins, is located in the brain and
endocranium and localized to the synaptic vesicles and
secretory granules. It functions as a Ca2+ sensor for
fast exocytosis. It, like synaptotagmin-2, has an
N-glycosylated N-terminus. Synaptotagmin 4, a member of
class 4 synaptotagmins, is located in the brain. It
functions are unknown. It, like synaptotagmin-11, has an
Asp to Ser substitution in its C2A domain. Previously
all synaptotagmins were thought to be calcium sensors in
the regulation of neurotransmitter release and hormone
secretion, but it has been shown that not all of them
bind calcium. Of the 17 identified synaptotagmins only
8 bind calcium (1-3, 5-7, 9, 10). The function of the
two C2 domains that bind calcium are: regulating the
fusion step of synaptic vesicle exocytosis (C2A) and
binding to phosphatidyl-inositol-3,4,5-triphosphate
(PIP3) in the absence of calcium ions and to
phosphatidylinositol bisphosphate (PIP2) in their
presence (C2B). C2B also regulates also the recycling
step of synaptic vesicles. C2 domains fold into an
8-standed beta-sandwich that can adopt 2 structural
arrangements: Type I and Type II, distinguished by a
circular permutation involving their N- and C-terminal
beta strands. Many C2 domains are Ca2+-dependent
membrane-targeting modules that bind a wide variety of
substances including bind phospholipids, inositol
polyphosphates, and intracellular proteins. Most C2
domain proteins are either signal transduction enzymes
that contain a single C2 domain, such as protein kinase
C, or membrane trafficking proteins which contain at
least two C2 domains, such as synaptotagmin 1. However,
there are a few exceptions to this including RIM
isoforms and some splice variants of piccolo/aczonin and
intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. This cd contains the second C2
repeat, C2B, and has a type-I topology.
Length = 136
Score = 34.7 bits (80), Expect = 0.009
Identities = 19/52 (36%), Positives = 26/52 (50%), Gaps = 10/52 (19%)
Query: 98 NVKKAFTGETKDLVDPYVQVSFAGLTG------KTSVKKNSYNPVWNEQIIF 143
N+KK G L DPYV++ G KT++KK + NP +NE F
Sbjct: 26 NLKKMDVG---GLSDPYVKIHLM-QNGKRLKKKKTTIKKRTLNPYYNESFSF 73
>gnl|CDD|165867 PLN02223, PLN02223, phosphoinositide phospholipase C.
Length = 537
Score = 35.8 bits (82), Expect = 0.010
Identities = 24/76 (31%), Positives = 36/76 (47%), Gaps = 14/76 (18%)
Query: 80 IRIYRADGLPKMNSSLVANVKKAFTGETKDLVDPYVQVSFAGLTG-----KTSVKKNSYN 134
++IY DG + + KK +K D YV++S AG+ KT+VK N +
Sbjct: 413 VKIYMGDGW-------IVDFKKRIGRLSKP--DLYVRISIAGVPHDEKIMKTTVKNNEWK 463
Query: 135 PVWNEQIIFSEMFPPL 150
P W E+ F +P L
Sbjct: 464 PTWGEEFTFPLTYPDL 479
>gnl|CDD|176030 cd08384, C2B_Rabphilin_Doc2, C2 domain second repeat present in
Rabphilin and Double C2 domain. Rabphilin is found
neurons and in neuroendrocrine cells, while Doc2 is
found not only in the brain but in tissues, including
mast cells, chromaffin cells, and osteoblasts.
Rabphilin and Doc2s share highly homologous tandem C2
domains, although their N-terminal structures are
completely different: rabphilin contains an N-terminal
Rab-binding domain (RBD),7 whereas Doc2 contains an
N-terminal Munc13-1-interacting domain (MID). C2 domains
fold into an 8-standed beta-sandwich that can adopt 2
structural arrangements: Type I and Type II,
distinguished by a circular permutation involving their
N- and C-terminal beta strands. Many C2 domains are
Ca2+-dependent membrane-targeting modules that bind a
wide variety of substances including bind phospholipids,
inositol polyphosphates, and intracellular proteins.
Most C2 domain proteins are either signal transduction
enzymes that contain a single C2 domain, such as protein
kinase C, or membrane trafficking proteins which contain
at least two C2 domains, such as synaptotagmin 1.
However, there are a few exceptions to this including
RIM isoforms and some splice variants of piccolo/aczonin
and intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. This cd contains the second C2
repeat, C2B, and has a type-I topology.
Length = 133
Score = 33.9 bits (78), Expect = 0.015
Identities = 17/57 (29%), Positives = 28/57 (49%), Gaps = 6/57 (10%)
Query: 112 DPYVQVSFAGLTGK-----TSVKKNSYNPVWNEQIIFSEMFPPLCSR-IKIQLRDND 162
DP+V++ GK T VKK + NP +NE+ + L + ++I + D D
Sbjct: 35 DPFVKLYLKPDAGKKSKHKTQVKKKTLNPEFNEEFFYDIKHSDLAKKTLEITVWDKD 91
>gnl|CDD|175993 cd04027, C2B_Munc13, C2 domain second repeat in Munc13 (mammalian
uncoordinated) proteins. C2-like domains are thought to
be involved in phospholipid binding in a Ca2+
independent manner in both Unc13 and Munc13.
Caenorabditis elegans Unc13 has a central domain with
sequence similarity to PKC, which includes C1 and
C2-related domains. Unc13 binds phorbol esters and DAG
with high affinity in a phospholipid manner. Mutations
in Unc13 results in abnormal neuronal connections and
impairment in cholinergic neurotransmission in the
nematode. Munc13 is the mammalian homolog which are
expressed in the brain. There are 3 isoforms (Munc13-1,
-2, -3) and are thought to play a role in
neurotransmitter release and are hypothesized to be
high-affinity receptors for phorbol esters. Unc13 and
Munc13 contain both C1 and C2 domains. There are two C2
related domains present, one central and one at the
carboxyl end. Munc13-1 contains a third C2-like domain.
Munc13 interacts with syntaxin, synaptobrevin, and
synaptotagmin suggesting a role for these as scaffolding
proteins. C2 domains fold into an 8-standed
beta-sandwich that can adopt 2 structural arrangements:
Type I and Type II, distinguished by a circular
permutation involving their N- and C-terminal beta
strands. Many C2 domains are Ca2+-dependent
membrane-targeting modules that bind a wide variety of
substances including bind phospholipids, inositol
polyphosphates, and intracellular proteins. Most C2
domain proteins are either signal transduction enzymes
that contain a single C2 domain, such as protein kinase
C, or membrane trafficking proteins which contain at
least two C2 domains, such as synaptotagmin 1. However,
there are a few exceptions to this including RIM
isoforms and some splice variants of piccolo/aczonin and
intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. This cd contains the second C2
repeat, C2B, and has a type-II topology.
Length = 127
Score = 33.7 bits (77), Expect = 0.016
Identities = 19/55 (34%), Positives = 25/55 (45%), Gaps = 10/55 (18%)
Query: 112 DPYVQVSFAGLTGKTSVKKNSYNPVWNEQIIFSEMFPPLC----SRIKIQLRDND 162
DPYV V +T + NPVWNE+ F C RIK+++ D D
Sbjct: 23 DPYVTVQVGKTKKRTKTIPQNLNPVWNEKFHFE------CHNSSDRIKVRVWDED 71
>gnl|CDD|176001 cd04036, C2_cPLA2, C2 domain present in cytosolic PhosphoLipase A2
(cPLA2). A single copy of the C2 domain is present in
cPLA2 which releases arachidonic acid from membranes
initiating the biosynthesis of potent inflammatory
mediators such as prostaglandins, leukotrienes, and
platelet-activating factor. C2 domains fold into an
8-standed beta-sandwich that can adopt 2 structural
arrangements: Type I and Type II, distinguished by a
circular permutation involving their N- and C-terminal
beta strands. Many C2 domains are Ca2+-dependent
membrane-targeting modules that bind a wide variety of
substances including bind phospholipids, inositol
polyphosphates, and intracellular proteins. Most C2
domain proteins are either signal transduction enzymes
that contain a single C2 domain, such as protein kinase
C, or membrane trafficking proteins which contain at
least two C2 domains, such as synaptotagmin 1. However,
there are a few exceptions to this including RIM
isoforms and some splice variants of piccolo/aczonin and
intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. Members of this cd have a
type-II topology.
Length = 119
Score = 33.0 bits (76), Expect = 0.025
Identities = 22/76 (28%), Positives = 35/76 (46%), Gaps = 12/76 (15%)
Query: 112 DPYVQVSF---AGLTGKTSVKKNSYNPVWNEQIIFSEMFPPLCSRIK----IQLRDNDPV 164
D YV++ + +T KNS NPVWNE F + S++K + + D D V
Sbjct: 22 DCYVELWLPTASDEKKRTKTIKNSINPVWNETFEFR-----IQSQVKNVLELTVMDEDYV 76
Query: 165 NNTVIGTHYIDLKNIS 180
+ +GT D+ +
Sbjct: 77 MDDHLGTVLFDVSKLK 92
>gnl|CDD|176017 cd04052, C2B_Tricalbin-like, C2 domain second repeat present in
Tricalbin-like proteins. 5 to 6 copies of the C2 domain
are present in Tricalbin, a yeast homolog of
Synaptotagmin, which is involved in membrane trafficking
and sorting. C2 domains fold into an 8-standed
beta-sandwich that can adopt 2 structural arrangements:
Type I and Type II, distinguished by a circular
permutation involving their N- and C-terminal beta
strands. Many C2 domains are Ca2+-dependent
membrane-targeting modules that bind a wide variety of
substances including bind phospholipids, inositol
polyphosphates, and intracellular proteins. Most C2
domain proteins are either signal transduction enzymes
that contain a single C2 domain, such as protein kinase
C, or membrane trafficking proteins which contain at
least two C2 domains, such as synaptotagmin 1. However,
there are a few exceptions to this including RIM
isoforms and some splice variants of piccolo/aczonin and
intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. This cd contains the second C2
repeat, C2B, and has a type-II topology.
Length = 111
Score = 33.0 bits (76), Expect = 0.026
Identities = 21/84 (25%), Positives = 41/84 (48%), Gaps = 8/84 (9%)
Query: 110 LVDPYVQVSF-AGLTGKTSVKKNSYNPVWN---EQIIFSEMFPPLCSRIKIQLRDNDPVN 165
L+ PY ++ L T VKK + NP WN E ++ SR+ + ++D+ +
Sbjct: 12 LLSPYAELYLNGKLVYTTRVKKKTNNPSWNASTEFLVTDRR----KSRVTVVVKDDRDRH 67
Query: 166 NTVIGTHYIDLKNISNDGDKGKDY 189
+ V+G+ I L ++ + G+ +
Sbjct: 68 DPVLGSVSISLNDLIDATSVGQQW 91
>gnl|CDD|175976 cd04009, C2B_Munc13-like, C2 domain second repeat in Munc13
(mammalian uncoordinated)-like proteins. C2-like
domains are thought to be involved in phospholipid
binding in a Ca2+ independent manner in both Unc13 and
Munc13. Caenorabditis elegans Unc13 has a central domain
with sequence similarity to PKC, which includes C1 and
C2-related domains. Unc13 binds phorbol esters and DAG
with high affinity in a phospholipid manner. Mutations
in Unc13 results in abnormal neuronal connections and
impairment in cholinergic neurotransmission in the
nematode. Munc13 is the mammalian homolog which are
expressed in the brain. There are 3 isoforms (Munc13-1,
-2, -3) and are thought to play a role in
neurotransmitter release and are hypothesized to be
high-affinity receptors for phorbol esters. Unc13 and
Munc13 contain both C1 and C2 domains. There are two C2
related domains present, one central and one at the
carboxyl end. Munc13-1 contains a third C2-like domain.
Munc13 interacts with syntaxin, synaptobrevin, and
synaptotagmin suggesting a role for these as scaffolding
proteins. C2 domains fold into an 8-standed
beta-sandwich that can adopt 2 structural arrangements:
Type I and Type II, distinguished by a circular
permutation involving their N- and C-terminal beta
strands. Many C2 domains are Ca2+-dependent
membrane-targeting modules that bind a wide variety of
substances including bind phospholipids, inositol
polyphosphates, and intracellular proteins. Most C2
domain proteins are either signal transduction enzymes
that contain a single C2 domain, such as protein kinase
C, or membrane trafficking proteins which contain at
least two C2 domains, such as synaptotagmin 1. However,
there are a few exceptions to this including RIM
isoforms and some splice variants of piccolo/aczonin and
intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. This cd contains the third C2
repeat, C2C, and has a type-II topology.
Length = 133
Score = 33.4 bits (77), Expect = 0.026
Identities = 20/83 (24%), Positives = 33/83 (39%), Gaps = 23/83 (27%)
Query: 80 IRIYRADGLPKMNSSLVANVKKAFTGETKDLVDPYVQVS------FAGL-TGKTSVKKNS 132
+ I A L ++S+ DP+V+V F + T KT VKK +
Sbjct: 20 VEILNARNLLPLDSN--------------GSSDPFVKVELLPRHLFPDVPTPKTQVKKKT 65
Query: 133 YNPVWNEQIIFSEMFPPLCSRIK 155
P+++E F PP ++
Sbjct: 66 LFPLFDES--FEFNVPPEQCSVE 86
>gnl|CDD|176045 cd08400, C2_Ras_p21A1, C2 domain present in RAS p21 protein
activator 1 (RasA1). RasA1 is a GAP1 (GTPase activating
protein 1), a Ras-specific GAP member, which suppresses
Ras function by enhancing the GTPase activity of Ras
proteins resulting in the inactive GDP-bound form of
Ras. In this way it can control cellular proliferation
and differentiation. RasA1 contains a C2 domain, a
Ras-GAP domain, a pleckstrin homology (PH)-like domain,
a SH3 domain, and 2 SH2 domains. C2 domains fold into an
8-standed beta-sandwich that can adopt 2 structural
arrangements: Type I and Type II, distinguished by a
circular permutation involving their N- and C-terminal
beta strands. Many C2 domains are Ca2+-dependent
membrane-targeting modules that bind a wide variety of
substances including bind phospholipids, inositol
polyphosphates, and intracellular proteins. Most C2
domain proteins are either signal transduction enzymes
that contain a single C2 domain, such as protein kinase
C, or membrane trafficking proteins which contain at
least two C2 domains, such as synaptotagmin 1. However,
there are a few exceptions to this including RIM
isoforms and some splice variants of piccolo/aczonin and
intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. Members here have a type-I
topology.
Length = 126
Score = 33.1 bits (76), Expect = 0.029
Identities = 21/67 (31%), Positives = 33/67 (49%), Gaps = 3/67 (4%)
Query: 93 SSLVANVKKAFTGETKDLVDPYVQVSFAGL-TGKTSVKKNSYNPVWNEQIIFSEMFPPLC 151
SL NV +A K + PY +S + +T V++ NPVW+E+ +F + PP
Sbjct: 4 RSLQLNVLEAHKLPVKHVPHPYCVISLNEVKVARTKVREGP-NPVWSEEFVFDD-LPPDV 61
Query: 152 SRIKIQL 158
+ I L
Sbjct: 62 NSFTISL 68
>gnl|CDD|165912 PLN02270, PLN02270, phospholipase D alpha.
Length = 808
Score = 34.1 bits (78), Expect = 0.033
Identities = 31/115 (26%), Positives = 50/115 (43%), Gaps = 12/115 (10%)
Query: 75 HARFIIRIYRAD-----GLPKMNSSLVANVKKAF---TGETKDLVDPYVQVSFAGLTGKT 126
H IY D G P LVANV++ GE++ ++ + G T K
Sbjct: 7 HGTLHATIYEVDKLHSGGGPGFLGKLVANVEETVGVGKGESQLYATIDLEKARVGRTRK- 65
Query: 127 SVKKNSYNPVWNEQIIFSEMFPPLCSRIKIQLRDNDPVNNTVIGTHYIDLKNISN 181
++ NP W E F + S I ++D++P+ T+IG YI ++ I +
Sbjct: 66 -IENEPKNPRWYES--FHIYCAHMASNIIFTVKDDNPIGATLIGRAYIPVEEILD 117
>gnl|CDD|175992 cd04026, C2_PKC_alpha_gamma, C2 domain in Protein Kinase C (PKC)
alpha and gamma. A single C2 domain is found in PKC
alpha and gamma. The PKC family of serine/threonine
kinases regulates apoptosis, proliferation, migration,
motility, chemo-resistance, and differentiation. There
are 3 groups: group 1(alpha, betaI, beta II, gamma)
which require phospholipids and calcium, group 2 (delta,
epsilon, theta, eta) which do not require calcium for
activation, and group 3 (xi, iota/lambda) which are
atypical and can be activated in the absence of
diacylglycerol and calcium. C2 domains fold into an
8-standed beta-sandwich that can adopt 2 structural
arrangements: Type I and Type II, distinguished by a
circular permutation involving their N- and C-terminal
beta strands. Many C2 domains are Ca2+-dependent
membrane-targeting modules that bind a wide variety of
substances including bind phospholipids, inositol
polyphosphates, and intracellular proteins. Most C2
domain proteins are either signal transduction enzymes
that contain a single C2 domain, such as protein kinase
C, or membrane trafficking proteins which contain at
least two C2 domains, such as synaptotagmin 1. However,
there are a few exceptions to this including RIM
isoforms and some splice variants of piccolo/aczonin and
intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. Members here have a type-I
topology.
Length = 131
Score = 31.5 bits (72), Expect = 0.098
Identities = 15/39 (38%), Positives = 18/39 (46%), Gaps = 5/39 (12%)
Query: 110 LVDPYVQVSF-----AGLTGKTSVKKNSYNPVWNEQIIF 143
L DPYV++ KT K + NPVWNE F
Sbjct: 33 LSDPYVKLKLIPDPKNETKQKTKTIKKTLNPVWNETFTF 71
>gnl|CDD|176072 cd08690, C2_Freud-1, C2 domain found in 5' repressor element under
dual repression binding protein-1 (Freud-1). Freud-1 is
a novel calcium-regulated repressor that negatively
regulates basal 5-HT1A receptor expression in neurons.
It may also play a role in the altered regulation of
5-HT1A receptors associated with anxiety or major
depression. Freud-1 contains two DM-14 basic repeats, a
helix-loop-helix DNA binding domain, and a C2 domain.
The Freud-1 C2 domain is thought to be calcium
insensitive and it lacks several acidic residues that
mediate calcium binding of the PKC C2 domain. In
addition, it contains a poly-basic insert that is not
present in calcium-dependent C2 domains and may function
as a nuclear localization signal. C2 domains fold into
an 8-standed beta-sandwich that can adopt 2 structural
arrangements: Type I and Type II, distinguished by a
circular permutation involving their N- and C-terminal
beta strands. Many C2 domains are Ca2+-dependent
membrane-targeting modules that bind a wide variety of
substances including bind phospholipids, inositol
polyphosphates, and intracellular proteins. Most C2
domain proteins are either signal transduction enzymes
that contain a single C2 domain, such as protein kinase
C, or membrane trafficking proteins which contain at
least two C2 domains, such as synaptotagmin 1. However,
there are a few exceptions to this including RIM
isoforms and some splice variants of piccolo/aczonin and
intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. This cd contains the first C2
repeat, C2A, and has a type-II topology.
Length = 155
Score = 31.9 bits (73), Expect = 0.10
Identities = 15/43 (34%), Positives = 21/43 (48%), Gaps = 6/43 (13%)
Query: 106 ETKDLVDPYVQVSF-----AGLTGKTSVKKNSYNPVWNEQIIF 143
KDL D YV+ F +GKTS K++ +P +NE
Sbjct: 21 NPKDL-DTYVKFEFPYPNEEPQSGKTSTIKDTNSPEYNESFKL 62
>gnl|CDD|176008 cd04043, C2_Munc13_fungal, C2 domain in Munc13 (mammalian
uncoordinated) proteins; fungal group. C2-like domains
are thought to be involved in phospholipid binding in a
Ca2+ independent manner in both Unc13 and Munc13.
Caenorabditis elegans Unc13 has a central domain with
sequence similarity to PKC, which includes C1 and
C2-related domains. Unc13 binds phorbol esters and DAG
with high affinity in a phospholipid manner. Mutations
in Unc13 results in abnormal neuronal connections and
impairment in cholinergic neurotransmission in the
nematode. Munc13 is the mammalian homolog which are
expressed in the brain. There are 3 isoforms (Munc13-1,
-2, -3) and are thought to play a role in
neurotransmitter release and are hypothesized to be
high-affinity receptors for phorbol esters. Unc13 and
Munc13 contain both C1 and C2 domains. There are two C2
related domains present, one central and one at the
carboxyl end. Munc13-1 contains a third C2-like domain.
Munc13 interacts with syntaxin, synaptobrevin, and
synaptotagmin suggesting a role for these as scaffolding
proteins. C2 domains fold into an 8-standed
beta-sandwich that can adopt 2 structural arrangements:
Type I and Type II, distinguished by a circular
permutation involving their N- and C-terminal beta
strands. Many C2 domains are Ca2+-dependent
membrane-targeting modules that bind a wide variety of
substances including bind phospholipids, inositol
polyphosphates, and intracellular proteins. Most C2
domain proteins are either signal transduction enzymes
that contain a single C2 domain, such as protein kinase
C, or membrane trafficking proteins which contain at
least two C2 domains, such as synaptotagmin 1. However,
there are a few exceptions to this including RIM
isoforms and some splice variants of piccolo/aczonin and
intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. This cd contains the second C2
repeat, C2B, and has a type-II topology.
Length = 126
Score = 31.5 bits (72), Expect = 0.12
Identities = 19/64 (29%), Positives = 24/64 (37%), Gaps = 15/64 (23%)
Query: 78 FIIRIYRADGLP--KMNSSLVANVKKAFTGETKDLVDPYVQVSFAGLTGKTSVKKNSYNP 135
F IRI RA+ L N V LVD + A KT ++ NP
Sbjct: 3 FTIRIVRAENLKADSSNGLSDPYVT---------LVDTNGKRRIA----KTRTIYDTLNP 49
Query: 136 VWNE 139
W+E
Sbjct: 50 RWDE 53
>gnl|CDD|176058 cd08676, C2A_Munc13-like, C2 domain first repeat in Munc13
(mammalian uncoordinated)-like proteins. C2-like
domains are thought to be involved in phospholipid
binding in a Ca2+ independent manner in both Unc13 and
Munc13. Caenorabditis elegans Unc13 has a central domain
with sequence similarity to PKC, which includes C1 and
C2-related domains. Unc13 binds phorbol esters and DAG
with high affinity in a phospholipid manner. Mutations
in Unc13 results in abnormal neuronal connections and
impairment in cholinergic neurotransmission in the
nematode. Munc13 is the mammalian homolog which are
expressed in the brain. There are 3 isoforms (Munc13-1,
-2, -3) and are thought to play a role in
neurotransmitter release and are hypothesized to be
high-affinity receptors for phorbol esters. Unc13 and
Munc13 contain both C1 and C2 domains. There are two C2
related domains present, one central and one at the
carboxyl end. Munc13-1 contains a third C2-like domain.
Munc13 interacts with syntaxin, synaptobrevin, and
synaptotagmin suggesting a role for these as scaffolding
proteins. C2 domains fold into an 8-standed
beta-sandwich that can adopt 2 structural arrangements:
Type I and Type II, distinguished by a circular
permutation involving their N- and C-terminal beta
strands. Many C2 domains are Ca2+-dependent
membrane-targeting modules that bind a wide variety of
substances including bind phospholipids, inositol
polyphosphates, and intracellular proteins. Most C2
domain proteins are either signal transduction enzymes
that contain a single C2 domain, such as protein kinase
C, or membrane trafficking proteins which contain at
least two C2 domains, such as synaptotagmin 1. However,
there are a few exceptions to this including RIM
isoforms and some splice variants of piccolo/aczonin and
intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. This cd contains the second C2
repeat, C2B, and has a type-II topology.
Length = 153
Score = 31.6 bits (72), Expect = 0.12
Identities = 11/24 (45%), Positives = 12/24 (50%)
Query: 120 AGLTGKTSVKKNSYNPVWNEQIIF 143
A T VK + NPVWNE F
Sbjct: 87 AKSIKVTEVKPQTLNPVWNETFRF 110
>gnl|CDD|176016 cd04051, C2_SRC2_like, C2 domain present in Soybean genes Regulated
by Cold 2 (SRC2)-like proteins. SRC2 production is a
response to pathogen infiltration. The initial response
of increased Ca2+ concentrations are coupled to
downstream signal transduction pathways via calcium
binding proteins. SRC2 contains a single C2 domain
which localizes to the plasma membrane and is involved
in Ca2+ dependent protein binding. C2 domains fold into
an 8-standed beta-sandwich that can adopt 2 structural
arrangements: Type I and Type II, distinguished by a
circular permutation involving their N- and C-terminal
beta strands. Many C2 domains are Ca2+-dependent
membrane-targeting modules that bind a wide variety of
substances including bind phospholipids, inositol
polyphosphates, and intracellular proteins. Most C2
domain proteins are either signal transduction enzymes
that contain a single C2 domain, such as protein kinase
C, or membrane trafficking proteins which contain at
least two C2 domains, such as synaptotagmin 1. However,
there are a few exceptions to this including RIM
isoforms and some splice variants of piccolo/aczonin and
intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions.
Length = 125
Score = 31.4 bits (72), Expect = 0.12
Identities = 18/85 (21%), Positives = 31/85 (36%), Gaps = 7/85 (8%)
Query: 112 DPYVQVSFAGLT-GKTSVKKNSY-NPVWNEQIIFS---EMFPPLCSRIKIQLRDNDP-VN 165
Y V T V ++ NP WNE + F + + I++ P +
Sbjct: 22 KVYAVVWIDPSHKQSTPVDRDGGTNPTWNETLRFPLDERLLQQGRLALTIEVYCERPSLG 81
Query: 166 NTVIGTHYIDLKNISNDGDKGKDYT 190
+ +IG + LK++ DG
Sbjct: 82 DKLIGEVRVPLKDLL-DGASPAGEL 105
>gnl|CDD|175999 cd04033, C2_NEDD4_NEDD4L, C2 domain present in the Human neural
precursor cell-expressed, developmentally down-regulated
4 (NEDD4) and NEDD4-like (NEDD4L/NEDD42). Nedd4 and
Nedd4-2 are two of the nine members of the Human Nedd4
family. All vertebrates appear to have both Nedd4 and
Nedd4-2 genes. They are thought to participate in the
regulation of epithelial Na+ channel (ENaC) activity.
They also have identical specificity for ubiquitin
conjugating enzymes (E2). Nedd4 and Nedd4-2 are
composed of a C2 domain, 2-4 WW domains, and a ubiquitin
ligase Hect domain. Their WW domains can bind PPxY (PY)
or LPSY motifs, and in vitro studies suggest that WW3
and WW4 of both proteins bind PY motifs in the key
substrates, with WW3 generally exhibiting higher
affinity. Most Nedd4 family members, especially Nedd4-2,
also have multiple splice variants, which might play
different roles in regulating their substrates. C2
domains fold into an 8-standed beta-sandwich that can
adopt 2 structural arrangements: Type I and Type II,
distinguished by a circular permutation involving their
N- and C-terminal beta strands. Many C2 domains are
Ca2+-dependent membrane-targeting modules that bind a
wide variety of substances including bind phospholipids,
inositol polyphosphates, and intracellular proteins.
Most C2 domain proteins are either signal transduction
enzymes that contain a single C2 domain, such as protein
kinase C, or membrane trafficking proteins which contain
at least two C2 domains, such as synaptotagmin 1.
However, there are a few exceptions to this including
RIM isoforms and some splice variants of piccolo/aczonin
and intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions.
Length = 133
Score = 31.2 bits (71), Expect = 0.12
Identities = 18/63 (28%), Positives = 27/63 (42%), Gaps = 12/63 (19%)
Query: 108 KDLV---DPYVQVS-FAGLTGK------TSVKKNSYNPVWNEQIIFSEMFPPLCSRIKIQ 157
KD+ DPYV++S + T K + NP WNE+ F P R+ +
Sbjct: 15 KDIFGASDPYVKISLYDPDGNGEIDSVQTKTIKKTLNPKWNEEFFFR--VNPREHRLLFE 72
Query: 158 LRD 160
+ D
Sbjct: 73 VFD 75
>gnl|CDD|177875 PLN02230, PLN02230, phosphoinositide phospholipase C 4.
Length = 598
Score = 32.0 bits (72), Expect = 0.18
Identities = 21/85 (24%), Positives = 42/85 (49%), Gaps = 19/85 (22%)
Query: 112 DPYVQVSFAG-----LTGKTSVKKNSYNPVWNEQIIFSEMFPPLCSRIKIQLRDND---- 162
D +V+V AG + KT ++ +++ P+WN++ IF P L + +++++ ++D
Sbjct: 497 DFFVRVGIAGAPVDEVMEKTKIEYDTWTPIWNKEFIFPLAVPEL-ALLRVEVHEHDINEK 555
Query: 163 ---------PVNNTVIGTHYIDLKN 178
PV+ G H + L N
Sbjct: 556 DDFGGQTCLPVSEIRQGIHAVPLFN 580
>gnl|CDD|176073 cd08691, C2_NEDL1-like, C2 domain present in NEDL1 (NEDD4-like
ubiquitin protein ligase-1). NEDL1 (AKA HECW1(HECT, C2
and WW domain containing E3 ubiquitin protein ligase 1))
is a newly identified HECT-type E3 ubiquitin protein
ligase highly expressed in favorable neuroblastomas. In
vertebrates it is found primarily in neuronal tissues,
including the spinal cord. NEDL1 is thought to normally
function in the quality control of cellular proteins by
eliminating misfolded proteins. This is thought to be
accomplished via a mechanism analogous to that of
ER-associated degradation by forming tight complexes and
aggregating misfolded proteins that have escaped
ubiquitin-mediated degradation. NEDL1, is composed of a
C2 domain, two WW domains, and a ubiquitin ligase Hect
domain. C2 domains fold into an 8-standed beta-sandwich
that can adopt 2 structural arrangements: Type I and
Type II, distinguished by a circular permutation
involving their N- and C-terminal beta strands. Many C2
domains are Ca2+-dependent membrane-targeting modules
that bind a wide variety of substances including bind
phospholipids, inositol polyphosphates, and
intracellular proteins. Most C2 domain proteins are
either signal transduction enzymes that contain a single
C2 domain, such as protein kinase C, or membrane
trafficking proteins which contain at least two C2
domains, such as synaptotagmin 1. However, there are a
few exceptions to this including RIM isoforms and some
splice variants of piccolo/aczonin and intersectin which
only have a single C2 domain. C2 domains with a calcium
binding region have negatively charged residues,
primarily aspartates, that serve as ligands for calcium
ions.
Length = 137
Score = 30.8 bits (70), Expect = 0.19
Identities = 19/61 (31%), Positives = 27/61 (44%), Gaps = 18/61 (29%)
Query: 98 NVKKAFTGETKDLVDPYVQVSFA-------------GLTGKTSVKKNSYNPVW-NEQIIF 143
N+KK DPYV++S G +TS+ +N+ NPVW EQ +F
Sbjct: 12 NLKKGMFFNP----DPYVKISIQPGKRHIFPALPHHGQECRTSIVENTINPVWHREQFVF 67
Query: 144 S 144
Sbjct: 68 V 68
>gnl|CDD|176031 cd08385, C2A_Synaptotagmin-1-5-6-9-10, C2A domain first repeat
present in Synaptotagmins 1, 5, 6, 9, and 10.
Synaptotagmin is a membrane-trafficking protein
characterized by a N-terminal transmembrane region, a
linker, and 2 C-terminal C2 domains. Synaptotagmin 1, a
member of class 1 synaptotagmins, is located in the
brain and endocranium and localized to the synaptic
vesicles and secretory granules. It functions as a Ca2+
sensor for fast exocytosis as do synaptotagmins 5, 6,
and 10. It is distinguished from the other
synaptotagmins by having an N-glycosylated N-terminus.
Synaptotagmins 5, 6, and 10, members of class 3
synaptotagmins, are located primarily in the brain and
localized to the active zone and plasma membrane. They
is distinguished from the other synaptotagmins by having
disulfide bonds at its N-terminus. Synaptotagmin 6 also
regulates the acrosome reaction, a unique Ca2+-regulated
exocytosis, in sperm. Synaptotagmin 9, a class 5
synaptotagmins, is located in the brain and localized to
the synaptic vesicles. It is thought to be a
Ca2+-sensor for dense-core vesicle exocytosis.
Previously all synaptotagmins were thought to be calcium
sensors in the regulation of neurotransmitter release
and hormone secretion, but it has been shown that not
all of them bind calcium. Of the 17 identified
synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10).
The function of the two C2 domains that bind calcium
are: regulating the fusion step of synaptic vesicle
exocytosis (C2A) and binding to
phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the
absence of calcium ions and to phosphatidylinositol
bisphosphate (PIP2) in their presence (C2B). C2B also
regulates also the recycling step of synaptic vesicles.
C2 domains fold into an 8-standed beta-sandwich that can
adopt 2 structural arrangements: Type I and Type II,
distinguished by a circular permutation involving their
N- and C-terminal beta strands. Many C2 domains are
Ca2+-dependent membrane-targeting modules that bind a
wide variety of substances including bind phospholipids,
inositol polyphosphates, and intracellular proteins.
Most C2 domain proteins are either signal transduction
enzymes that contain a single C2 domain, such as protein
kinase C, or membrane trafficking proteins which contain
at least two C2 domains, such as synaptotagmin 1.
However, there are a few exceptions to this including
RIM isoforms and some splice variants of piccolo/aczonin
and intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. This cd contains the first C2
repeat, C2A, and has a type-I topology.
Length = 124
Score = 30.7 bits (70), Expect = 0.21
Identities = 21/77 (27%), Positives = 32/77 (41%), Gaps = 17/77 (22%)
Query: 80 IRIYRADGLPKMNSSLVANVKKAFTGETKDLVDPYVQVSFAGLTGK---TSVKKNSYNPV 136
+ I +A LP M+ G + DPYV+V K T V + + NPV
Sbjct: 20 VGIIQAADLPAMD----------MGGTS----DPYVKVYLLPDKKKKFETKVHRKTLNPV 65
Query: 137 WNEQIIFSEMFPPLCSR 153
+NE F + L ++
Sbjct: 66 FNETFTFKVPYSELGNK 82
>gnl|CDD|176041 cd08395, C2C_Munc13, C2 domain third repeat in Munc13 (mammalian
uncoordinated) proteins. C2-like domains are thought to
be involved in phospholipid binding in a Ca2+
independent manner in both Unc13 and Munc13.
Caenorabditis elegans Unc13 has a central domain with
sequence similarity to PKC, which includes C1 and
C2-related domains. Unc13 binds phorbol esters and DAG
with high affinity in a phospholipid manner. Mutations
in Unc13 results in abnormal neuronal connections and
impairment in cholinergic neurotransmission in the
nematode. Munc13 is the mammalian homolog which are
expressed in the brain. There are 3 isoforms (Munc13-1,
-2, -3) and are thought to play a role in
neurotransmitter release and are hypothesized to be
high-affinity receptors for phorbol esters. Unc13 and
Munc13 contain both C1 and C2 domains. There are two C2
related domains present, one central and one at the
carboxyl end. Munc13-1 contains a third C2-like domain.
Munc13 interacts with syntaxin, synaptobrevin, and
synaptotagmin suggesting a role for these as scaffolding
proteins.C2 domains fold into an 8-standed beta-sandwich
that can adopt 2 structural arrangements: Type I and
Type II, distinguished by a circular permutation
involving their N- and C-terminal beta strands. Many C2
domains are Ca2+-dependent membrane-targeting modules
that bind a wide variety of substances including bind
phospholipids, inositol polyphosphates, and
intracellular proteins. Most C2 domain proteins are
either signal transduction enzymes that contain a single
C2 domain, such as protein kinase C, or membrane
trafficking proteins which contain at least two C2
domains, such as synaptotagmin 1. However, there are a
few exceptions to this including RIM isoforms and some
splice variants of piccolo/aczonin and intersectin which
only have a single C2 domain. C2 domains with a calcium
binding region have negatively charged residues,
primarily aspartates, that serve as ligands for calcium
ions. This cd contains the third C2 repeat, C2C, and
has a type-II topology.
Length = 120
Score = 30.1 bits (68), Expect = 0.27
Identities = 23/92 (25%), Positives = 43/92 (46%), Gaps = 16/92 (17%)
Query: 106 ETKDLVDPYVQVSFAG--LTGK-----TSVKKNSYNPVWNE--QIIFSEMFPPLCSRIKI 156
+T + P+V+V+ G L+ K T K N+++P +NE Q I P + I
Sbjct: 15 QTTGMFRPFVEVNLIGPHLSDKKRKFATKSKNNNWSPKYNETFQFILGNEDDPESYELHI 74
Query: 157 QLRD----NDPVNNTVIGTHYIDLKNISNDGD 184
++D D + ++G + L++I+ G
Sbjct: 75 CVKDYCFARD---DRLVGVTVLQLRDIAQAGS 103
>gnl|CDD|175977 cd04010, C2B_RasA3, C2 domain second repeat present in RAS p21
protein activator 3 (RasA3). RasA3 are members of
GTPase activating protein 1 (GAP1), a Ras-specific GAP,
which suppresses Ras function by enhancing the GTPase
activity of Ras proteins resulting in the inactive
GDP-bound form of Ras. In this way it can control
cellular proliferation and differentiation. RasA3
contains an N-terminal C2 domain, a Ras-GAP domain, a
plextrin homology (PH)-like domain, and a Bruton's
Tyrosine Kinase (BTK) zinc binding domain. C2 domains
fold into an 8-standed beta-sandwich that can adopt 2
structural arrangements: Type I and Type II,
distinguished by a circular permutation involving their
N- and C-terminal beta strands. Many C2 domains are
Ca2+-dependent membrane-targeting modules that bind a
wide variety of substances including bind phospholipids,
inositol polyphosphates, and intracellular proteins.
Most C2 domain proteins are either signal transduction
enzymes that contain a single C2 domain, such as protein
kinase C, or membrane trafficking proteins which contain
at least two C2 domains, such as synaptotagmin 1.
However, there are a few exceptions to this including
RIM isoforms and some splice variants of piccolo/aczonin
and intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. This cd contains the second C2
repeat, C2B, and has a type-I topology.
Length = 148
Score = 30.4 bits (69), Expect = 0.29
Identities = 18/79 (22%), Positives = 30/79 (37%), Gaps = 9/79 (11%)
Query: 112 DPYVQVSFAGLTGK-----TSVKKNSYNPVWNEQIIFSEMFPPLCSRIKIQLRDNDPVNN 166
DPY V+ K T VKK + NP ++E F + + ++ + D
Sbjct: 20 DPYASVTLIYSNKKQDTKRTKVKKKTNNPQFDEAFYFDVTIDSSPEKKQFEMPEEDAEKL 79
Query: 167 TVIGTHYIDLKNISNDGDK 185
+ +DL + S G
Sbjct: 80 ELR----VDLWHASMGGGD 94
>gnl|CDD|176064 cd08682, C2_Rab11-FIP_classI, C2 domain found in Rab11-family
interacting proteins (FIP) class I. Rab GTPases recruit
various effector proteins to organelles and vesicles.
Rab11-family interacting proteins (FIPs) are involved in
mediating the role of Rab11. FIPs can be divided into
three classes: class I FIPs (Rip11a, Rip11b, RCP, and
FIP2) which contain a C2 domain after N-terminus of the
protein, class II FIPs (FIP3 and FIP4) which contain two
EF-hands and a proline rich region, and class III FIPs
(FIP1) which exhibits no homology to known protein
domains. All FIP proteins contain a highly conserved,
20-amino acid motif at the C-terminus of the protein,
known as Rab11/25 binding domain (RBD). Class I FIPs
are thought to bind to endocytic membranes via their C2
domain, which interacts directly with phospholipids.
Class II FIPs do not have any membrane binding domains
leaving much to speculate about the mechanism involving
FIP3 and FIP4 interactions with endocytic membranes. The
members in this CD are class I FIPs. The exact function
of the Rab11 and FIP interaction is unknown, but there
is speculation that it involves the role of forming a
targeting complex that recruits a group of proteins
involved in membrane transport to organelles. The C2
domain was first identified in PKC. C2 domains fold into
an 8-standed beta-sandwich that can adopt 2 structural
arrangements: Type I and Type II, distinguished by a
circular permutation involving their N- and C-terminal
beta strands. Many C2 domains are Ca2+-dependent
membrane-targeting modules that bind a wide variety of
substances including bind phospholipids, inositol
polyphosphates, and intracellular proteins. Most C2
domain proteins are either signal transduction enzymes
that contain a single C2 domain, such as protein kinase
C, or membrane trafficking proteins which contain at
least two C2 domains, such as synaptotagmin 1. However,
there are a few exceptions to this including RIM
isoforms and some splice variants of piccolo/aczonin and
intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions.
Length = 126
Score = 30.1 bits (68), Expect = 0.29
Identities = 12/32 (37%), Positives = 17/32 (53%)
Query: 112 DPYVQVSFAGLTGKTSVKKNSYNPVWNEQIIF 143
D YV + TSVK+ + +PVW E+ F
Sbjct: 21 DAYVIIQLGKEKYSTSVKEKTTSPVWKEECSF 52
>gnl|CDD|176025 cd08379, C2D_MCTP_PRT_plant, C2 domain fourth repeat found in
Multiple C2 domain and Transmembrane region Proteins
(MCTP); plant subset. MCTPs are involved in Ca2+
signaling at the membrane. Plant-MCTPs are composed of
a variable N-terminal sequence, four C2 domains, two
transmembrane regions (TMRs), and a short C-terminal
sequence. It is one of four protein classes that are
anchored to membranes via a transmembrane region; the
others being synaptotagmins, extended synaptotagmins,
and ferlins. MCTPs are the only membrane-bound C2 domain
proteins that contain two functional TMRs. MCTPs are
unique in that they bind Ca2+ but not phospholipids. C2
domains fold into an 8-standed beta-sandwich that can
adopt 2 structural arrangements: Type I and Type II,
distinguished by a circular permutation involving their
N- and C-terminal beta strands. Many C2 domains are
Ca2+-dependent membrane-targeting modules that bind a
wide variety of substances including bind phospholipids,
inositol polyphosphates, and intracellular proteins.
Most C2 domain proteins are either signal transduction
enzymes that contain a single C2 domain, such as protein
kinase C, or membrane trafficking proteins which contain
at least two C2 domains, such as synaptotagmin 1.
However, there are a few exceptions to this including
RIM isoforms and some splice variants of piccolo/aczonin
and intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. This cd contains the fourth C2
repeat, C2D, and has a type-II topology.
Length = 126
Score = 29.7 bits (67), Expect = 0.48
Identities = 21/87 (24%), Positives = 36/87 (41%), Gaps = 12/87 (13%)
Query: 106 ETKDL---VDPYVQVSFAGLTGKTSVKKNSYNPVWNEQIIFSEMFPPLCSRIKIQLRDN- 161
KD D Y + +T ++S NP WNEQ + ++ P C+ + + + DN
Sbjct: 16 RAKDGRGSTDAYCVAKYGPKWVRTRTVEDSSNPRWNEQYTW-PVYDP-CTVLTVGVFDNS 73
Query: 162 ------DPVNNTVIGTHYIDLKNISND 182
+ +IG I L + +D
Sbjct: 74 QSHWKEAVQPDVLIGKVRIRLSTLEDD 100
>gnl|CDD|176028 cd08382, C2_Smurf-like, C2 domain present in Smad
ubiquitination-related factor (Smurf)-like proteins. A
single C2 domain is found in Smurf proteins,
C2-WW-HECT-domain E3s, which play an important role in
the downregulation of the TGF-beta signaling pathway.
Smurf proteins also regulate cell shape, motility, and
polarity by degrading small guanosine triphosphatases
(GTPases). C2 domains fold into an 8-standed
beta-sandwich that can adopt 2 structural arrangements:
Type I and Type II, distinguished by a circular
permutation involving their N- and C-terminal beta
strands. Many C2 domains are Ca2+-dependent
membrane-targeting modules that bind a wide variety of
substances including bind phospholipids, inositol
polyphosphates, and intracellular proteins. Most C2
domain proteins are either signal transduction enzymes
that contain a single C2 domain, such as protein kinase
C, or membrane trafficking proteins which contain at
least two C2 domains, such as synaptotagmin 1. However,
there are a few exceptions to this including RIM
isoforms and some splice variants of piccolo/aczonin and
intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. Members here have type-II
topology.
Length = 123
Score = 29.2 bits (66), Expect = 0.56
Identities = 11/30 (36%), Positives = 16/30 (53%), Gaps = 1/30 (3%)
Query: 112 DPYVQVSF-AGLTGKTSVKKNSYNPVWNEQ 140
DP+ ++ G T T V K + +P WNE
Sbjct: 22 DPFAVITVDGGQTHSTDVAKKTLDPKWNEH 51
>gnl|CDD|175995 cd04029, C2A_SLP-4_5, C2 domain first repeat present in
Synaptotagmin-like proteins 4 and 5. All Slp members
basically share an N-terminal Slp homology domain (SHD)
and C-terminal tandem C2 domains (named the C2A domain
and the C2B domain) with the SHD and C2 domains being
separated by a linker sequence of various length. SHD of
Slp (except for the Slp4-SHD) function as a specific
Rab27A/B-binding domain. In addition to Slp, rabphilin,
Noc2, and Munc13-4 also function as Rab27-binding
proteins. It has been demonstrated that Slp4/granuphilin
promotes dense-core vesicle exocytosis. The C2A domain
of Slp4 is Ca2+ dependent. Slp5 mRNA has been shown to
be restricted to human placenta and liver suggesting a
role in Rab27A-dependent membrane trafficking in
specific tissues. C2 domains fold into an 8-standed
beta-sandwich that can adopt 2 structural arrangements:
Type I and Type II, distinguished by a circular
permutation involving their N- and C-terminal beta
strands. Many C2 domains are Ca2+-dependent
membrane-targeting modules that bind a wide variety of
substances including bind phospholipids, inositol
polyphosphates, and intracellular proteins. Most C2
domain proteins are either signal transduction enzymes
that contain a single C2 domain, such as protein kinase
C, or membrane trafficking proteins which contain at
least two C2 domains, such as synaptotagmin 1. However,
there are a few exceptions to this including RIM
isoforms and some splice variants of piccolo/aczonin and
intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. This cd contains the first C2
repeat, C2A, and has a type-I topology.
Length = 125
Score = 28.9 bits (65), Expect = 0.71
Identities = 22/61 (36%), Positives = 33/61 (54%), Gaps = 11/61 (18%)
Query: 94 SLVANVKK----AFTGETKDLVDPYVQV------SFAGLTGKTSVKKNSYNPVWNEQIIF 143
SL +VK+ A+ E K +PYV+ S KTS+K+N+ NPV+NE + +
Sbjct: 16 SLNVHVKECRNLAYGDEAKKRSNPYVKTYLLPDKSRQS-KRKTSIKRNTTNPVYNETLKY 74
Query: 144 S 144
S
Sbjct: 75 S 75
>gnl|CDD|176039 cd08393, C2A_SLP-1_2, C2 domain first repeat present in
Synaptotagmin-like proteins 1 and 2. All Slp members
basically share an N-terminal Slp homology domain (SHD)
and C-terminal tandem C2 domains (named the C2A domain
and the C2B domain) with the SHD and C2 domains being
separated by a linker sequence of various length.
Slp1/JFC1 and Slp2/exophilin 4 promote granule docking
to the plasma membrane. Additionally, their C2A domains
are both Ca2+ independent, unlike Slp3 and
Slp4/granuphilin which are Ca2+ dependent. It is
thought that SHD (except for the Slp4-SHD) functions as
a specific Rab27A/B-binding domain. In addition to
Slps, rabphilin, Noc2, and Munc13-4 also function as
Rab27-binding proteins. C2 domains fold into an
8-standed beta-sandwich that can adopt 2 structural
arrangements: Type I and Type II, distinguished by a
circular permutation involving their N- and C-terminal
beta strands. Many C2 domains are Ca2+-dependent
membrane-targeting modules that bind a wide variety of
substances including bind phospholipids, inositol
polyphosphates, and intracellular proteins. Most C2
domain proteins are either signal transduction enzymes
that contain a single C2 domain, such as protein kinase
C, or membrane trafficking proteins which contain at
least two C2 domains, such as synaptotagmin 1. However,
there are a few exceptions to this including RIM
isoforms and some splice variants of piccolo/aczonin and
intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. This cd contains the first C2
repeat, C2A, and has a type-I topology.
Length = 125
Score = 28.9 bits (65), Expect = 0.73
Identities = 16/37 (43%), Positives = 19/37 (51%), Gaps = 5/37 (13%)
Query: 108 KDLVDPYVQVSFAGLTG-----KTSVKKNSYNPVWNE 139
K DPYV+ KTSVKK + NPV+NE
Sbjct: 34 KQRSDPYVKTYLLPDKSNRGKRKTSVKKKTLNPVFNE 70
>gnl|CDD|203418 pfam06268, Fascin, Fascin domain. This family consists of several
eukaryotic fascin or singed proteins. The fascins are a
structurally unique and evolutionarily conserved group
of actin cross-linking proteins. Fascins function in the
organisation of two major forms of actin-based
structures: dynamic, cortical cell protrusions and
cytoplasmic microfilament bundles. The cortical
structures, which include filopodia, spikes,
lamellipodial ribs, oocyte microvilli and the dendrites
of dendritic cells, have roles in cell-matrix adhesion,
cell interactions and cell migration, whereas the
cytoplasmic actin bundles appear to participate in cell
architecture. Dictyostelium hisactophilin, another
actin-binding protein, is a submembranous pH sensor that
signals slight changes of the H+ concentration to actin
by inducing actin polymerisation and binding to
microfilaments only at pH values below seven. Members of
this family are histidine rich, typically contain the
repeated motif of HHXH.
Length = 108
Score = 28.4 bits (64), Expect = 0.87
Identities = 15/33 (45%), Positives = 19/33 (57%), Gaps = 2/33 (6%)
Query: 12 FYHKWALLTDPDD--IAGGPKGYLKCDISVIGK 42
F WALL D + + GGP G LK + S +GK
Sbjct: 70 FRGGWALLRDSNGRYLGGGPNGLLKANASTVGK 102
>gnl|CDD|176055 cd08410, C2B_Synaptotagmin-17, C2 domain second repeat present in
Synaptotagmin 17. Synaptotagmin is a
membrane-trafficking protein characterized by a
N-terminal transmembrane region, a linker, and 2
C-terminal C2 domains. Synaptotagmin 17 is located in
the brain, kidney, and prostate and is thought to be a
peripheral membrane protein. Previously all
synaptotagmins were thought to be calcium sensors in the
regulation of neurotransmitter release and hormone
secretion, but it has been shown that not all of them
bind calcium. Of the 17 identified synaptotagmins only
8 bind calcium (1-3, 5-7, 9, 10). The function of the
two C2 domains that bind calcium are: regulating the
fusion step of synaptic vesicle exocytosis (C2A) and
binding to phosphatidyl-inositol-3,4,5-triphosphate
(PIP3) in the absence of calcium ions and to
phosphatidylinositol bisphosphate (PIP2) in their
presence (C2B). C2B also regulates also the recycling
step of synaptic vesicles. C2 domains fold into an
8-standed beta-sandwich that can adopt 2 structural
arrangements: Type I and Type II, distinguished by a
circular permutation involving their N- and C-terminal
beta strands. Many C2 domains are Ca2+-dependent
membrane-targeting modules that bind a wide variety of
substances including bind phospholipids, inositol
polyphosphates, and intracellular proteins. Most C2
domain proteins are either signal transduction enzymes
that contain a single C2 domain, such as protein kinase
C, or membrane trafficking proteins which contain at
least two C2 domains, such as synaptotagmin 1. However,
there are a few exceptions to this including RIM
isoforms and some splice variants of piccolo/aczonin and
intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. This cd contains the second C2
repeat, C2B, and has a type-I topology.
Length = 135
Score = 29.1 bits (65), Expect = 0.91
Identities = 15/43 (34%), Positives = 22/43 (51%), Gaps = 7/43 (16%)
Query: 112 DPYVQVSF-AGL----TGKTSVKKNSYNPVWNEQIIFSEMFPP 149
DP+V++ GL T KTS + + +P +NE FS P
Sbjct: 36 DPFVKIQLVHGLKLIKTKKTSCMRGTIDPFYNES--FSFKVPQ 76
>gnl|CDD|175987 cd04020, C2B_SLP_1-2-3-4, C2 domain second repeat present in
Synaptotagmin-like proteins 1-4. All Slp members
basically share an N-terminal Slp homology domain (SHD)
and C-terminal tandem C2 domains (named the C2A domain
and the C2B domain) with the SHD and C2 domains being
separated by a linker sequence of various length.
Slp1/JFC1 and Slp2/exophilin 4 promote granule docking
to the plasma membrane. Additionally, their C2A domains
are both Ca2+ independent, unlike the case in Slp3 and
Slp4/granuphilin in which their C2A domains are Ca2+
dependent. It is thought that SHD (except for the
Slp4-SHD) functions as a specific Rab27A/B-binding
domain. In addition to Slps, rabphilin, Noc2, and
Munc13-4 also function as Rab27-binding proteins. It has
been demonstrated that Slp3 and Slp4/granuphilin promote
dense-core vesicle exocytosis. C2 domains fold into an
8-standed beta-sandwich that can adopt 2 structural
arrangements: Type I and Type II, distinguished by a
circular permutation involving their N- and C-terminal
beta strands. Many C2 domains are Ca2+-dependent
membrane-targeting modules that bind a wide variety of
substances including bind phospholipids, inositol
polyphosphates, and intracellular proteins. Most C2
domain proteins are either signal transduction enzymes
that contain a single C2 domain, such as protein kinase
C, or membrane trafficking proteins which contain at
least two C2 domains, such as synaptotagmin 1. However,
there are a few exceptions to this including RIM
isoforms and some splice variants of piccolo/aczonin and
intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. This cd contains the second
C2 repeat, C2B, and has a type-I topology.
Length = 162
Score = 29.2 bits (66), Expect = 0.94
Identities = 10/20 (50%), Positives = 12/20 (60%)
Query: 125 KTSVKKNSYNPVWNEQIIFS 144
KT V K S NPVWN ++
Sbjct: 67 KTPVVKKSVNPVWNHTFVYD 86
>gnl|CDD|175986 cd04019, C2C_MCTP_PRT_plant, C2 domain third repeat found in
Multiple C2 domain and Transmembrane region Proteins
(MCTP); plant subset. MCTPs are involved in Ca2+
signaling at the membrane. Plant-MCTPs are composed of
a variable N-terminal sequence, four C2 domains, two
transmembrane regions (TMRs), and a short C-terminal
sequence. It is one of four protein classes that are
anchored to membranes via a transmembrane region; the
others being synaptotagmins, extended synaptotagmins,
and ferlins. MCTPs are the only membrane-bound C2 domain
proteins that contain two functional TMRs. MCTPs are
unique in that they bind Ca2+ but not phospholipids. C2
domains fold into an 8-standed beta-sandwich that can
adopt 2 structural arrangements: Type I and Type II,
distinguished by a circular permutation involving their
N- and C-terminal beta strands. Many C2 domains are
Ca2+-dependent membrane-targeting modules that bind a
wide variety of substances including bind phospholipids,
inositol polyphosphates, and intracellular proteins.
Most C2 domain proteins are either signal transduction
enzymes that contain a single C2 domain, such as protein
kinase C, or membrane trafficking proteins which contain
at least two C2 domains, such as synaptotagmin 1.
However, there are a few exceptions to this including
RIM isoforms and some splice variants of piccolo/aczonin
and intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. This cd contains the third C2
repeat, C2C, and has a type-II topology.
Length = 150
Score = 28.8 bits (65), Expect = 0.97
Identities = 14/53 (26%), Positives = 24/53 (45%), Gaps = 11/53 (20%)
Query: 106 ETKDLV--------DPYVQVSFAGLTGKTSVKKNSY-NPVWNEQIIF--SEMF 147
E +DLV + +V+ +T + NP WNE+++F +E F
Sbjct: 8 EAQDLVPSDKNRVPEVFVKAQLGNQVLRTRPSQTRNGNPSWNEELMFVAAEPF 60
>gnl|CDD|227100 COG4758, COG4758, Predicted membrane protein [Function unknown].
Length = 235
Score = 29.3 bits (66), Expect = 1.0
Identities = 22/86 (25%), Positives = 39/86 (45%), Gaps = 14/86 (16%)
Query: 88 LPKMNSSLVANVKKAFTGETKDLV--DPYVQVSFAGLTGKTSVKKNSYNPVWNEQI-IFS 144
LP+ +++V ++K G TK +V D V + G + + SY+ + N I + S
Sbjct: 154 LPEGENTIV--IRK-MIGNTKIIVPEDVGVSLDVTAFYGDVKLFQESYS-IRNNNIHVES 209
Query: 145 EMFPPLCSRIKIQLRDNDPVNNTVIG 170
+ + R+KI + T IG
Sbjct: 210 KDYDQSERRVKINVS-------TFIG 228
>gnl|CDD|215520 PLN02964, PLN02964, phosphatidylserine decarboxylase.
Length = 644
Score = 29.4 bits (66), Expect = 1.3
Identities = 20/61 (32%), Positives = 30/61 (49%), Gaps = 2/61 (3%)
Query: 117 VSFAGLTGKTSVKKNSYNPVWN-EQIIFSEMFPPLCSRIKIQLRDNDPVNNTVIGTHYID 175
VSF T +T ++ PVWN E+ + E P +RI + N NT++G +D
Sbjct: 75 VSFGEQTFRTETSDSTDKPVWNSEKKLLLEKNGPHLARISV-FETNRLSKNTLVGYCELD 133
Query: 176 L 176
L
Sbjct: 134 L 134
>gnl|CDD|214736 smart00593, RUN, domain involved in Ras-like GTPase signaling.
Length = 64
Score = 27.2 bits (61), Expect = 1.3
Identities = 6/14 (42%), Positives = 9/14 (64%)
Query: 10 HQFYHKWALLTDPD 23
++Y WA L DP+
Sbjct: 29 SKYYEPWAFLRDPE 42
>gnl|CDD|113092 pfam04309, G3P_antiterm, Glycerol-3-phosphate responsive
antiterminator. Intracellular glycerol is usually
converted to glycerol-3-phosphate in an ATP-requiring
phosphorylation reaction catalyzed by glycerol kinase
(GlpK) glycerol-3-phosphate activates the antiterminator
GlpP.
Length = 174
Score = 28.5 bits (64), Expect = 1.4
Identities = 11/72 (15%), Positives = 28/72 (38%), Gaps = 7/72 (9%)
Query: 35 CDISVIGKGDTVKIPQKSEKDEDD-----IEANLLLPEGVPLERQHARFIIRIYRADGLP 89
+ + G + + + + + + +L+ EG+ + + FI + DG+
Sbjct: 19 YQVVFLLTGHILNLKEIVKLLKQRGKTVFVHVDLV--EGLSNDEEAIEFIKEVIEPDGII 76
Query: 90 KMNSSLVANVKK 101
S ++ KK
Sbjct: 77 STKSKVIKKAKK 88
>gnl|CDD|163244 TIGR03385, CoA_CoA_reduc, CoA-disulfide reductase. Members of this
protein family are CoA-disulfide reductase (EC
1.8.1.14), as characterized in Staphylococcus aureus,
Pyrococcus horikoshii, and Borrelia burgdorferi, and
inferred in several other species on the basis of high
levels of CoA and an absence of glutathione as a
protective thiol [Cellular processes, Detoxification].
Length = 427
Score = 28.9 bits (65), Expect = 1.7
Identities = 14/53 (26%), Positives = 23/53 (43%)
Query: 138 NEQIIFSEMFPPLCSRIKIQLRDNDPVNNTVIGTHYIDLKNISNDGDKGKDYT 190
N I+F+ IK + N N +IG YI ++ ++GK+ T
Sbjct: 112 NLDIVFTLRNLEDTDAIKQYIDKNKVENVVIIGGGYIGIEMAEALRERGKNVT 164
>gnl|CDD|221310 pfam11913, DUF3431, Protein of unknown function (DUF3431). This
family of proteins are functionally uncharacterized.
This protein is found in eukaryotes. Proteins in this
family are typically between 291 to 390 amino acids in
length. This protein has a conserved NLRC sequence
motif.
Length = 220
Score = 28.4 bits (64), Expect = 1.8
Identities = 12/30 (40%), Positives = 19/30 (63%), Gaps = 4/30 (13%)
Query: 2 KERLRE---GDHQFYHKWALLTD-PDDIAG 27
+ER+R+ D+ Y +W L TD DD++G
Sbjct: 163 RERIRKRPREDYVRYRQWLLETDLDDDLSG 192
>gnl|CDD|176038 cd08392, C2A_SLP-3, C2 domain first repeat present in
Synaptotagmin-like protein 3. All Slp members basically
share an N-terminal Slp homology domain (SHD) and
C-terminal tandem C2 domains (named the C2A domain and
the C2B domain) with the SHD and C2 domains being
separated by a linker sequence of various length. SHD of
Slp (except for the Slp4-SHD) function as a specific
Rab27A/B-binding domain. In addition to Slp, rabphilin,
Noc2, and Munc13-4 also function as Rab27-binding
proteins. Little is known about the expression or
localization of Slp3. The C2A domain of Slp3 is Ca2+
dependent. It has been demonstrated that Slp3 promotes
dense-core vesicle exocytosis. C2 domains fold into an
8-standed beta-sandwich that can adopt 2 structural
arrangements: Type I and Type II, distinguished by a
circular permutation involving their N- and C-terminal
beta strands. Many C2 domains are Ca2+-dependent
membrane-targeting modules that bind a wide variety of
substances including bind phospholipids, inositol
polyphosphates, and intracellular proteins. Most C2
domain proteins are either signal transduction enzymes
that contain a single C2 domain, such as protein kinase
C, or membrane trafficking proteins which contain at
least two C2 domains, such as synaptotagmin 1. However,
there are a few exceptions to this including RIM
isoforms and some splice variants of piccolo/aczonin and
intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. This cd contains the first C2
repeat, C2A, and has a type-I topology.
Length = 128
Score = 27.9 bits (62), Expect = 2.0
Identities = 17/43 (39%), Positives = 22/43 (51%), Gaps = 5/43 (11%)
Query: 102 AFTGETKDLVDPYVQVSF-----AGLTGKTSVKKNSYNPVWNE 139
A+ E K PYV+V KT+VKK + NPV+NE
Sbjct: 28 AYGDEKKKKCHPYVKVCLLPDKSHNSKRKTAVKKGTVNPVFNE 70
>gnl|CDD|176021 cd08375, C2_Intersectin, C2 domain present in Intersectin. A
single instance of the C2 domain is located C terminally
in the intersectin protein. Intersectin functions as a
scaffolding protein, providing a link between the actin
cytoskeleton and the components of endocytosis and plays
a role in signal transduction. In addition to C2,
intersectin contains several additional domains
including: Eps15 homology domains, SH3 domains, a RhoGEF
domain, and a PH domain. C2 domains fold into an
8-standed beta-sandwich that can adopt 2 structural
arrangements: Type I and Type II, distinguished by a
circular permutation involving their N- and C-terminal
beta strands. Many C2 domains are Ca2+-dependent
membrane-targeting modules that bind a wide variety of
substances including bind phospholipids, inositol
polyphosphates, and intracellular proteins. Most C2
domain proteins are either signal transduction enzymes
that contain a single C2 domain, such as protein kinase
C, or membrane trafficking proteins which contain at
least two C2 domains, such as synaptotagmin 1. However,
there are a few exceptions to this including RIM
isoforms and some splice variants of piccolo/aczonin and
intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. The members here have topology
I.
Length = 136
Score = 27.7 bits (62), Expect = 2.0
Identities = 13/32 (40%), Positives = 17/32 (53%)
Query: 112 DPYVQVSFAGLTGKTSVKKNSYNPVWNEQIIF 143
DPY +VS KT V ++ NP WN + F
Sbjct: 37 DPYCEVSMGSQEHKTKVVSDTLNPKWNSSMQF 68
>gnl|CDD|176053 cd08408, C2B_Synaptotagmin-14_16, C2 domain second repeat present
in Synaptotagmins 14 and 16. Synaptotagmin 14 and 16
are membrane-trafficking proteins in specific tissues
outside the brain. Both of these contain C-terminal
tandem C2 repeats, but only Synaptotagmin 14 has an
N-terminal transmembrane domain and a putative
fatty-acylation site. Previously all synaptotagmins were
thought to be calcium sensors in the regulation of
neurotransmitter release and hormone secretion, but it
has been shown that not all of them bind calcium and
this is indeed the case here. Of the 17 identified
synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10).
The function of the two C2 domains that bind calcium
are: regulating the fusion step of synaptic vesicle
exocytosis (C2A) and binding to
phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the
absence of calcium ions and to phosphatidylinositol
bisphosphate (PIP2) in their presence (C2B). C2B also
regulates also the recycling step of synaptic vesicles.
C2 domains fold into an 8-standed beta-sandwich that can
adopt 2 structural arrangements: Type I and Type II,
distinguished by a circular permutation involving their
N- and C-terminal beta strands. Many C2 domains are
Ca2+-dependent membrane-targeting modules that bind a
wide variety of substances including bind phospholipids,
inositol polyphosphates, and intracellular proteins.
Most C2 domain proteins are either signal transduction
enzymes that contain a single C2 domain, such as protein
kinase C, or membrane trafficking proteins which contain
at least two C2 domains, such as synaptotagmin 1.
However, there are a few exceptions to this including
RIM isoforms and some splice variants of piccolo/aczonin
and intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. This cd contains the second C2
repeat, C2B, and has a type-I topology.
Length = 138
Score = 27.7 bits (62), Expect = 2.1
Identities = 10/38 (26%), Positives = 19/38 (50%), Gaps = 6/38 (15%)
Query: 112 DPYVQVSFAGLTG------KTSVKKNSYNPVWNEQIIF 143
D YV+++ G KTS+++ +P + E +F
Sbjct: 37 DTYVKLTLLNSDGQEISKSKTSIRRGQPDPEFKETFVF 74
>gnl|CDD|176035 cd08389, C2A_Synaptotagmin-14_16, C2A domain first repeat present
in Synaptotagmins 14 and 16. Synaptotagmin 14 and 16
are membrane-trafficking proteins in specific tissues
outside the brain. Both of these contain C-terminal
tandem C2 repeats, but only Synaptotagmin 14 has an
N-terminal transmembrane domain and a putative
fatty-acylation site. Previously all synaptotagmins were
thought to be calcium sensors in the regulation of
neurotransmitter release and hormone secretion, but it
has been shown that not all of them bind calcium and
this is indeed the case here. Of the 17 identified
synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10).
The function of the two C2 domains that bind calcium
are: regulating the fusion step of synaptic vesicle
exocytosis (C2A) and binding to
phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the
absence of calcium ions and to phosphatidylinositol
bisphosphate (PIP2) in their presence (C2B). C2B also
regulates also the recycling step of synaptic vesicles.
C2 domains fold into an 8-standed beta-sandwich that can
adopt 2 structural arrangements: Type I and Type II,
distinguished by a circular permutation involving their
N- and C-terminal beta strands. Many C2 domains are
Ca2+-dependent membrane-targeting modules that bind a
wide variety of substances including bind phospholipids,
inositol polyphosphates, and intracellular proteins.
Most C2 domain proteins are either signal transduction
enzymes that contain a single C2 domain, such as protein
kinase C, or membrane trafficking proteins which contain
at least two C2 domains, such as synaptotagmin 1.
However, there are a few exceptions to this including
RIM isoforms and some splice variants of piccolo/aczonin
and intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. This cd contains the first C2
repeat, C2A, and has a type-I topology.
Length = 124
Score = 27.6 bits (62), Expect = 2.4
Identities = 11/25 (44%), Positives = 15/25 (60%), Gaps = 1/25 (4%)
Query: 124 GKTSVKKNSYNPVWNEQIIFSEMFP 148
KT V++ NPV+NE FS + P
Sbjct: 53 AKTKVQRGP-NPVFNETFTFSRVEP 76
>gnl|CDD|234155 TIGR03282, methan_mark_13, putative methanogenesis marker 13
metalloprotein. Members of this protein family, to
date, are found in a completed prokaryotic genome if and
only if the species is one of the archaeal methanogens.
The exact function is unknown, but likely is linked to
methanogenesis or a process closely connected to it.
This metal cluster-binding family is related to
nitrogenase structural protein NifD and accessory
protein NifE, among others [Energy metabolism,
Methanogenesis].
Length = 352
Score = 28.2 bits (63), Expect = 3.1
Identities = 11/28 (39%), Positives = 15/28 (53%)
Query: 61 ANLLLPEGVPLERQHARFIIRIYRADGL 88
ANL G+P R+ A I+ + A GL
Sbjct: 225 ANLDPNIGLPKVRRDAEVILSDFDATGL 252
>gnl|CDD|176026 cd08380, C2_PI3K_like, C2 domain present in phosphatidylinositol
3-kinases (PI3Ks). C2 domain present in all classes of
PI3Ks. PI3Ks (AKA phosphatidylinositol (PtdIns)
3-kinases) regulate cell processes such as cell growth,
differentiation, proliferation, and motility. PI3Ks
work on phosphorylation of phosphatidylinositol,
phosphatidylinositide (4)P (PtdIns (4)P),2 or
PtdIns(4,5)P2. Specifically they phosphorylate the D3
hydroxyl group of phosphoinositol lipids on the inositol
ring. There are 3 classes of PI3Ks based on structure,
regulation, and specificity. All classes contain a C2
domain, a PIK domain, and a kinase catalytic domain. In
addition some PI3Ks contain a Ras-binding domain and/or
a p85-binding domain. Class II PI3Ks contain both of
these as well as a PX domain, and a C-terminal C2 domain
containing a nuclear localization signal. C2 domains
fold into an 8-standed beta-sandwich that can adopt 2
structural arrangements: Type I and Type II,
distinguished by a circular permutation involving their
N- and C-terminal beta strands. Many C2 domains are
Ca2+-dependent membrane-targeting modules that bind a
wide variety of substances including bind phospholipids,
inositol polyphosphates, and intracellular proteins.
Most C2 domain proteins are either signal transduction
enzymes that contain a single C2 domain, such as protein
kinase C, or membrane trafficking proteins which contain
at least two C2 domains, such as synaptotagmin 1.
However, there are a few exceptions to this including
RIM isoforms and some splice variants of piccolo/aczonin
and intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. This cd contains members with
the first C2 repeat, C2A, and a type-I topology, as well
as some with a single C2 repeat.
Length = 156
Score = 27.3 bits (61), Expect = 3.2
Identities = 12/60 (20%), Positives = 20/60 (33%), Gaps = 10/60 (16%)
Query: 109 DLVDPYVQVSFAGLTG--------KTSVKKNSYNPVWNEQIIFSEMFP--PLCSRIKIQL 158
D D + V G T S + WNE + F + P +R+ + +
Sbjct: 24 DSEDLKLYVRVQLYHGGEPLCPPQSTKKVPFSTSVTWNEWLTFDILISDLPREARLCLSI 83
>gnl|CDD|176052 cd08407, C2B_Synaptotagmin-13, C2 domain second repeat present in
Synaptotagmin 13. Synaptotagmin is a
membrane-trafficking protein characterized by a
N-terminal transmembrane region, a linker, and 2
C-terminal C2 domains. Synaptotagmin 13, a member of
class 6 synaptotagmins, is located in the brain. It
functions are unknown. It, like synaptotagmins 8 and 12,
does not have any consensus Ca2+ binding sites.
Previously all synaptotagmins were thought to be calcium
sensors in the regulation of neurotransmitter release
and hormone secretion, but it has been shown that not
all of them bind calcium. Of the 17 identified
synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10).
The function of the two C2 domains that bind calcium
are: regulating the fusion step of synaptic vesicle
exocytosis (C2A) and binding to
phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the
absence of calcium ions and to phosphatidylinositol
bisphosphate (PIP2) in their presence (C2B). C2B also
regulates also the recycling step of synaptic vesicles.
C2 domains fold into an 8-standed beta-sandwich that can
adopt 2 structural arrangements: Type I and Type II,
distinguished by a circular permutation involving their
N- and C-terminal beta strands. Many C2 domains are
Ca2+-dependent membrane-targeting modules that bind a
wide variety of substances including bind phospholipids,
inositol polyphosphates, and intracellular proteins.
Most C2 domain proteins are either signal transduction
enzymes that contain a single C2 domain, such as protein
kinase C, or membrane trafficking proteins which contain
at least two C2 domains, such as synaptotagmin 1.
However, there are a few exceptions to this including
RIM isoforms and some splice variants of piccolo/aczonin
and intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. This cd contains the second C2
repeat, C2B, and has a type-I topology.
Length = 138
Score = 27.3 bits (60), Expect = 3.8
Identities = 22/65 (33%), Positives = 30/65 (46%), Gaps = 9/65 (13%)
Query: 88 LPKMNSSLVANVKKA--FTGETKDL--VDPYVQVSFAGLTGKTSVK-----KNSYNPVWN 138
LP N LV +K + + K L +D V+V+ K K K+ NPVWN
Sbjct: 11 LPAANRLLVVVIKAKNLHSDQLKLLLGIDVSVKVTLKHQNAKLKKKQTKRAKHKINPVWN 70
Query: 139 EQIIF 143
E I+F
Sbjct: 71 EMIMF 75
>gnl|CDD|240397 PTZ00390, PTZ00390, ubiquitin-conjugating enzyme; Provisional.
Length = 152
Score = 26.7 bits (59), Expect = 5.1
Identities = 10/21 (47%), Positives = 13/21 (61%)
Query: 63 LLLPEGVPLERQHARFIIRIY 83
L LPE P+E RF+ +IY
Sbjct: 55 LFLPEQYPMEPPKVRFLTKIY 75
>gnl|CDD|178538 PLN02952, PLN02952, phosphoinositide phospholipase C.
Length = 599
Score = 27.7 bits (61), Expect = 5.2
Identities = 12/38 (31%), Positives = 24/38 (63%), Gaps = 1/38 (2%)
Query: 125 KTSVKKNSYNPVWNEQIIFSEMFPPLCSRIKIQLRDND 162
KT + ++++ P WNE+ F P L + ++I++R+ D
Sbjct: 516 KTKIIEDNWYPAWNEEFSFPLTVPEL-ALLRIEVREYD 552
>gnl|CDD|176007 cd04042, C2A_MCTP_PRT, C2 domain first repeat found in Multiple C2
domain and Transmembrane region Proteins (MCTP). MCTPs
are involved in Ca2+ signaling at the membrane. MCTP is
composed of a variable N-terminal sequence, three C2
domains, two transmembrane regions (TMRs), and a short
C-terminal sequence. It is one of four protein classes
that are anchored to membranes via a transmembrane
region; the others being synaptotagmins, extended
synaptotagmins, and ferlins. MCTPs are the only
membrane-bound C2 domain proteins that contain two
functional TMRs. MCTPs are unique in that they bind Ca2+
but not phospholipids. C2 domains fold into an 8-standed
beta-sandwich that can adopt 2 structural arrangements:
Type I and Type II, distinguished by a circular
permutation involving their N- and C-terminal beta
strands. Many C2 domains are Ca2+-dependent
membrane-targeting modules that bind a wide variety of
substances including bind phospholipids, inositol
polyphosphates, and intracellular proteins. Most C2
domain proteins are either signal transduction enzymes
that contain a single C2 domain, such as protein kinase
C, or membrane trafficking proteins which contain at
least two C2 domains, such as synaptotagmin 1. However,
there are a few exceptions to this including RIM
isoforms and some splice variants of piccolo/aczonin and
intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. This cd contains the first C2
repeat, C2A, and has a type-II topology.
Length = 121
Score = 26.5 bits (59), Expect = 5.3
Identities = 14/30 (46%), Positives = 18/30 (60%), Gaps = 3/30 (10%)
Query: 112 DPYVQVSFAGLTGKTS--VKKNSYNPVWNE 139
DPYV+ + G T S + KN NPVW+E
Sbjct: 22 DPYVKFKYGGKTVYKSKTIYKN-LNPVWDE 50
>gnl|CDD|224865 COG1954, GlpP, Glycerol-3-phosphate responsive antiterminator
(mRNA-binding) [Transcription].
Length = 181
Score = 26.9 bits (60), Expect = 5.6
Identities = 14/72 (19%), Positives = 30/72 (41%), Gaps = 7/72 (9%)
Query: 35 CDISVIGKGDTVKIPQKSEKDEDD-----IEANLLLPEGVPLERQHARFIIRIYRADGLP 89
+ G + I + +K ++ I +L+ EG+ + FI + + DG+
Sbjct: 24 SQYVFLLTGHILNIKEIVKKLKNRGKTVFIHVDLV--EGLSNDEVAIEFIKEVIKPDGII 81
Query: 90 KMNSSLVANVKK 101
S+++ KK
Sbjct: 82 STKSNVIKKAKK 93
>gnl|CDD|115572 pfam06924, DUF1281, Protein of unknown function (DUF1281). This
family consists of several hypothetical enterobacterial
proteins of around 170 residues in length. Members of
this family are found in Escherichia coli, Salmonella
typhimurium and Shigella species. The function of this
family is unknown.
Length = 134
Score = 26.3 bits (58), Expect = 6.2
Identities = 9/25 (36%), Positives = 13/25 (52%)
Query: 64 LLPEGVPLERQHARFIIRIYRADGL 88
LL + V L+ R I R+Y G+
Sbjct: 79 LLKKNVVLDEDTIRQIDRLYLQSGI 103
>gnl|CDD|176067 cd08685, C2_RGS-like, C2 domain of the Regulator Of G-Protein
Signaling (RGS) family. This CD contains members of the
regulator of G-protein signaling (RGS) family. RGS is a
GTPase activating protein which inhibits G-protein
mediated signal transduction. The protein is largely
cytosolic, but G-protein activation leads to
translocation of this protein to the plasma membrane. A
nuclear form of this protein has also been described,
but its sequence has not been identified. There are
multiple alternatively spliced transcript variants in
this family with some members having additional domains
(ex. PDZ and RGS) downstream of the C2 domain. The C2
domain was first identified in PKC. C2 domains fold into
an 8-standed beta-sandwich that can adopt 2 structural
arrangements: Type I and Type II, distinguished by a
circular permutation involving their N- and C-terminal
beta strands. Many C2 domains are Ca2+-dependent
membrane-targeting modules that bind a wide variety of
substances including bind phospholipids, inositol
polyphosphates, and intracellular proteins. Most C2
domain proteins are either signal transduction enzymes
that contain a single C2 domain, such as protein kinase
C, or membrane trafficking proteins which contain at
least two C2 domains, such as synaptotagmin 1. However,
there are a few exceptions to this including RIM
isoforms and some splice variants of piccolo/aczonin and
intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions.
Length = 119
Score = 25.9 bits (57), Expect = 8.9
Identities = 13/53 (24%), Positives = 22/53 (41%), Gaps = 11/53 (20%)
Query: 112 DPYVQVSFAGLTG-----KTSVKKNSYNPVWNEQIIFSEMFPPLCSRIKIQLR 159
+ YV++S + KTS +S NP+++E F + Q R
Sbjct: 33 NSYVKISLSPDKEVRFRQKTSTVPDSANPLFHETFSF-----DVN-ERDYQKR 79
>gnl|CDD|176013 cd04048, C2A_Copine, C2 domain first repeat in Copine. There are 2
copies of the C2 domain present in copine, a protein
involved in membrane trafficking, protein-protein
interactions, and perhaps even cell division and growth.
C2 domains fold into an 8-standed beta-sandwich that
can adopt 2 structural arrangements: Type I and Type II,
distinguished by a circular permutation involving their
N- and C-terminal beta strands. Many C2 domains are
Ca2+-dependent membrane-targeting modules that bind a
wide variety of substances including bind phospholipids,
inositol polyphosphates, and intracellular proteins.
Most C2 domain proteins are either signal transduction
enzymes that contain a single C2 domain, such as protein
kinase C, or membrane trafficking proteins which contain
at least two C2 domains, such as synaptotagmin 1.
However, there are a few exceptions to this including
RIM isoforms and some splice variants of piccolo/aczonin
and intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. This cd contains the first C2
repeat, C2A, and has a type-I topology.
Length = 120
Score = 25.6 bits (57), Expect = 9.2
Identities = 14/58 (24%), Positives = 23/58 (39%), Gaps = 8/58 (13%)
Query: 112 DPYVQV-----SFAGLT--GKTSVKKNSYNPVWNEQIIFSEMFPPLCSRIKIQLRDND 162
DP+V V G+T V KN+ NP + F +++ ++ D D
Sbjct: 22 DPFVVVYVKTGGSGQWVEIGRTEVIKNNLNPDFVTTFTVDYYF-EEVQKLRFEVYDVD 78
>gnl|CDD|175979 cd04012, C2A_PI3K_class_II, C2 domain first repeat present in class
II phosphatidylinositol 3-kinases (PI3Ks). There are 3
classes of PI3Ks based on structure, regulation, and
specificity. All classes contain a N-terminal C2 domain,
a PIK domain, and a kinase catalytic domain. Unlike
class I and class III, class II PI3Ks have additionally
a PX domain and a C-terminal C2 domain containing a
nuclear localization signal both of which bind
phospholipids though in a slightly different fashion.
Class II PIK3s act downstream of receptors for growth
factors, integrins, and chemokines. PI3Ks (AKA
phosphatidylinositol (PtdIns) 3-kinases) regulate cell
processes such as cell growth, differentiation,
proliferation, and motility. PI3Ks work on
phosphorylation of phosphatidylinositol,
phosphatidylinositide (4)P (PtdIns (4)P),2 or
PtdIns(4,5)P2. Specifically they phosphorylate the D3
hydroxyl group of phosphoinositol lipids on the inositol
ring. C2 domains fold into an 8-standed beta-sandwich
that can adopt 2 structural arrangements: Type I and
Type II, distinguished by a circular permutation
involving their N- and C-terminal beta strands. Many C2
domains are Ca2+-dependent membrane-targeting modules
that bind a wide variety of substances including bind
phospholipids, inositol polyphosphates, and
intracellular proteins. Most C2 domain proteins are
either signal transduction enzymes that contain a single
C2 domain, such as protein kinase C, or membrane
trafficking proteins which contain at least two C2
domains, such as synaptotagmin 1. However, there are a
few exceptions to this including RIM isoforms and some
splice variants of piccolo/aczonin and intersectin which
only have a single C2 domain. C2 domains with a calcium
binding region have negatively charged residues,
primarily aspartates, that serve as ligands for calcium
ions. This cd contains the first C2 repeat, C2A, and has
a type-I topology.
Length = 171
Score = 26.2 bits (58), Expect = 9.3
Identities = 11/40 (27%), Positives = 17/40 (42%), Gaps = 3/40 (7%)
Query: 122 LTGKTSVKKNSYN-PVWNEQIIFSEMFP--PLCSRIKIQL 158
T + K+ + VW+E I F P SR+ + L
Sbjct: 49 TTKPVKITKSFFPRVVWDEWIEFPIPVCQLPRESRLVLTL 88
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 0.138 0.410
Gapped
Lambda K H
0.267 0.0772 0.140
Matrix: BLOSUM62
Gap Penalties: Existence: 11, Extension: 1
Number of Sequences: 44354
Number of Hits to DB: 10,087,759
Number of extensions: 935123
Number of successful extensions: 809
Number of sequences better than 10.0: 1
Number of HSP's gapped: 782
Number of HSP's successfully gapped: 108
Length of query: 191
Length of database: 10,937,602
Length adjustment: 91
Effective length of query: 100
Effective length of database: 6,901,388
Effective search space: 690138800
Effective search space used: 690138800
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: 56 (25.3 bits)