RPS-BLAST 2.2.26 [Sep-21-2011]
Database: CDD.v3.10
44,354 sequences; 10,937,602 total letters
Searching..................................................done
Query= psy3954
(268 letters)
>gnl|CDD|176046 cd08401, C2A_RasA2_RasA3, C2 domain first repeat present in RasA2
and RasA3. RasA2 and RasA3 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. RasA2 and RasA3 are both inositol
1,3,4,5-tetrakisphosphate-binding proteins and contain
an N-terminal C2 domain, a Ras-GAP domain, a
pleckstrin-homology (PH) domain which localizes it to
the plasma membrane, and Bruton's Tyrosine Kinase (BTK)
a 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 first C2
repeat, C2A, and has a type-I topology.
Length = 121
Score = 116 bits (293), Expect = 5e-33
Identities = 43/87 (49%), Positives = 59/87 (67%), Gaps = 1/87 (1%)
Query: 79 QILNSPSVNPVTSPFFGEEFQFDIPRRFRHLAVYAYDRDRTSKTDRVLGKVTIQRSDLHR 138
++ + +V PFFGE+F F+IPR FRHL+ Y YDRD + D V+GKV I++ DLH+
Sbjct: 34 EVFRTKTVEKSLCPFFGEDFYFEIPRTFRHLSFYIYDRDVLRR-DSVIGKVAIKKEDLHK 92
Query: 139 ISNKEHWFPLTPVTQDSEVQGKIQIGV 165
K+ WFPL PV DSEVQGK+ + +
Sbjct: 93 YYGKDTWFPLQPVDADSEVQGKVHLEL 119
Score = 26.6 bits (59), Expect = 8.5
Identities = 19/59 (32%), Positives = 29/59 (49%), Gaps = 5/59 (8%)
Query: 171 SLMVNVNEASGLTQVNGQCDPTAMVTVHYTHN--KSDVQKSKVKKKSHSPVFNESFMFD 227
SL + + EA L +G P M + T N + +V ++K +KS P F E F F+
Sbjct: 1 SLKIKIGEAKNLPPRSG---PNKMRDCYCTVNLDQEEVFRTKTVEKSLCPFFGEDFYFE 56
>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 = 98.6 bits (246), Expect = 9e-26
Identities = 43/111 (38%), Positives = 60/111 (54%), Gaps = 16/111 (14%)
Query: 172 LMVNVNEASGLTQVNGQCDPTAMVTVHYTHNKSDVQKSKVKKKSHSPVFNESFMFDRSL- 230
L V V E S L NG CDP A VT+ Y++ K D +++KVKKK+++P F+E+F FD ++
Sbjct: 2 LSVRVIECSDLALKNGTCDPYASVTLIYSNKKQDTKRTKVKKKTNNPQFDEAFYFDVTID 61
Query: 231 --------------GDPIELVVSLHHDISGLN-VFLGEVHIPLNNKETSSS 266
+ +EL V L H G VFLGEV IPL + +
Sbjct: 62 SSPEKKQFEMPEEDAEKLELRVDLWHASMGGGDVFLGEVRIPLRGLDLQAG 112
>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 = 90.5 bits (225), Expect = 9e-23
Identities = 41/112 (36%), Positives = 61/112 (54%), Gaps = 18/112 (16%)
Query: 172 LMVNVNEASGLTQV-NGQCDPTAMVTVHYTHNKSDVQKSKVKKKSHSPVFNESFMFDRSL 230
L V V E L NG CDP A VT++Y+ +K+D +++KVKKK+++P F+E+F F+ ++
Sbjct: 1 LSVRVLECRDLALKSNGTCDPFARVTLNYS-SKTDTKRTKVKKKTNNPRFDEAFYFELTI 59
Query: 231 G---------------DPIELVVSLHHDISGL-NVFLGEVHIPLNNKETSSS 266
G + EL V L H + FLGEV IPL + + S
Sbjct: 60 GFSYEKKSFKVEEEDLEKSELRVELWHASMVSGDDFLGEVRIPLQGLQQAGS 111
Score = 28.1 bits (63), Expect = 2.7
Identities = 18/77 (23%), Positives = 28/77 (36%), Gaps = 17/77 (22%)
Query: 90 TSPFFGEEFQFDIPRRFRH----------------LAVYAYDRDRTSKTDRVLGKVTIQR 133
+P F E F F++ F + L V + S D LG+V I
Sbjct: 45 NNPRFDEAFYFELTIGFSYEKKSFKVEEEDLEKSELRVELWHASMVSGDD-FLGEVRIPL 103
Query: 134 SDLHRISNKEHWFPLTP 150
L + + + W+ L P
Sbjct: 104 QGLQQAGSHQAWYFLQP 120
>gnl|CDD|176029 cd08383, C2A_RasGAP, C2 domain (first 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
either a single C2 domain or 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 = 117
Score = 81.9 bits (203), Expect = 8e-20
Identities = 34/76 (44%), Positives = 47/76 (61%), Gaps = 6/76 (7%)
Query: 91 SPFFGEEFQFDIPRR---FRHLAVYAYDRDRTSKTDRVLGKVTIQRSDLHRISNKEHWFP 147
+PF+GEEF FD P F L+ Y D+ + D V+GKV + + DL + K+ WFP
Sbjct: 41 NPFWGEEFVFDDPPPDVTFFTLSFYNKDKRSKDR-DIVIGKVALSKLDLGQ--GKDEWFP 97
Query: 148 LTPVTQDSEVQGKIQI 163
LTPV DSEVQG +++
Sbjct: 98 LTPVDPDSEVQGSVRL 113
Score = 29.9 bits (68), Expect = 0.49
Identities = 20/71 (28%), Positives = 30/71 (42%), Gaps = 10/71 (14%)
Query: 171 SLMVNVNEASGLTQVNGQCDPTAMVTVHYTHNKSDVQKSKVKKKSHSPVFNESFMFDRSL 230
SL + + EA L G DP V++ V ++K +K +P + E F+FD
Sbjct: 1 SLRLRILEAKNLP-SKGTRDPYCTVSLDQVE----VARTKTVEKL-NPFWGEEFVFD--- 51
Query: 231 GDPIELVVSLH 241
DP V
Sbjct: 52 -DPPPDVTFFT 61
>gnl|CDD|215765 pfam00168, C2, C2 domain.
Length = 85
Score = 64.2 bits (157), Expect = 1e-13
Identities = 32/87 (36%), Positives = 48/87 (55%), Gaps = 5/87 (5%)
Query: 172 LMVNVNEASGL--TQVNGQCDPTAMVTVHYTHNKSDVQKSKVKKKSHSPVFNESFMFDRS 229
L V V A L +NG+ DP V V K D +K+KV K + +PV+NE+F F+ +
Sbjct: 1 LRVTVISAKNLPPKDLNGKSDP--YVKVSLGGQKKDTKKTKVVKNTLNPVWNETFTFEVT 58
Query: 230 LGDPIELVVSL-HHDISGLNVFLGEVH 255
L + EL + + +D G + F+GEV
Sbjct: 59 LPELAELRIEVYDYDRFGKDDFIGEVT 85
Score = 33.8 bits (78), Expect = 0.013
Identities = 14/42 (33%), Positives = 21/42 (50%), Gaps = 2/42 (4%)
Query: 90 TSPFFGEEFQFDI-PRRFRHLAVYAYDRDRTSKTDRVLGKVT 130
+P + E F F++ L + YD DR K D +G+VT
Sbjct: 45 LNPVWNETFTFEVTLPELAELRIEVYDYDRFGK-DDFIGEVT 85
>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 = 63.2 bits (154), Expect = 5e-13
Identities = 33/97 (34%), Positives = 46/97 (47%), Gaps = 7/97 (7%)
Query: 172 LMVNVNEASGL--TQVNGQCDPTAMVTVHYTHNKSDVQKSKVKKKSHSPVFNESFMFDRS 229
L V V EA L +NG+ DP V++ K+KV K + +PV+NE+F F
Sbjct: 1 LRVTVIEARNLPAKDLNGKSDPYVKVSL----GGKQKFKTKVVKNTLNPVWNETFEFPVL 56
Query: 230 LGDPIELVVSL-HHDISGLNVFLGEVHIPLNNKETSS 265
+ L V + D + FLGEV IPL+ S
Sbjct: 57 DPESDTLTVEVWDKDRFSKDDFLGEVEIPLSELLDSG 93
Score = 42.1 bits (99), Expect = 2e-05
Identities = 22/61 (36%), Positives = 31/61 (50%), Gaps = 3/61 (4%)
Query: 90 TSPFFGEEFQFDI-PRRFRHLAVYAYDRDRTSKTDRVLGKVTIQRSDLHRISNK-EHWFP 147
+P + E F+F + L V +D+DR SK D LG+V I S+L + E W P
Sbjct: 43 LNPVWNETFEFPVLDPESDTLTVEVWDKDRFSK-DDFLGEVEIPLSELLDSGKEGELWLP 101
Query: 148 L 148
L
Sbjct: 102 L 102
>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 = 58.3 bits (141), Expect = 4e-11
Identities = 29/93 (31%), Positives = 49/93 (52%), Gaps = 5/93 (5%)
Query: 171 SLMVNVNEASGL--TQVNGQCDPTAMVTVHYTHNKSDVQKSKVKKKSHSPVFNESFMFDR 228
+L V + A L G+ DP V V + + +K+KV K + +PV+NE+F F+
Sbjct: 1 TLTVKIISARNLPPKDKGGKSDP--YVKVSLDGDPKEKKKTKVVKNTLNPVWNETFEFEV 58
Query: 229 SLGDPIELVVSL-HHDISGLNVFLGEVHIPLNN 260
+ EL + + D G + F+G+V IPL++
Sbjct: 59 PPPELAELEIEVYDKDRFGRDDFIGQVTIPLSD 91
Score = 39.0 bits (91), Expect = 2e-04
Identities = 19/56 (33%), Positives = 29/56 (51%), Gaps = 2/56 (3%)
Query: 91 SPFFGEEFQFDIPRRF-RHLAVYAYDRDRTSKTDRVLGKVTIQRSDLHRISNKEHW 145
+P + E F+F++P L + YD+DR + D +G+VTI SDL E
Sbjct: 47 NPVWNETFEFEVPPPELAELEIEVYDKDRFGR-DDFIGQVTIPLSDLLLGGRHEKL 101
>gnl|CDD|176018 cd04054, C2A_Rasal1_RasA4, C2 domain first repeat present in RasA1
and RasA4. Rasal1 and RasA4 are both members of GAP1
(GTPase activating protein 1). Rasal1 responds to
repetitive Ca2+ signals by associating with the plasma
membrane and deactivating Ras. RasA4 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 of these proteins contains
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 first C2
repeat, C2A, and has a type-I topology.
Length = 121
Score = 58.3 bits (141), Expect = 6e-11
Identities = 29/79 (36%), Positives = 43/79 (54%), Gaps = 8/79 (10%)
Query: 91 SPFFGEEFQFDIPRRFRHLAVYAYDRDRTSKTDRVLGKVTIQRSDLHRISNK----EHWF 146
+PF+GEE+ +P F ++ Y D D S+ D V+GKV++ R IS + W
Sbjct: 45 NPFWGEEYTVHLPPGFHTVSFYVLDEDTLSRDD-VIGKVSLTR---EVISAHPRGIDGWM 100
Query: 147 PLTPVTQDSEVQGKIQIGV 165
LT V D EVQG+I + +
Sbjct: 101 NLTEVDPDEEVQGEIHLEL 119
>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 = 55.3 bits (134), Expect = 9e-10
Identities = 32/117 (27%), Positives = 56/117 (47%), Gaps = 7/117 (5%)
Query: 159 GKIQIGVLSTPTS--LMVNVNEASGL--TQVNGQCDPTAMVTVHYTHNKSDVQKSKVKKK 214
G++ + + PT+ L V V +A L + G DP V++ K +K+ VKK
Sbjct: 1 GELLLSLSYLPTAERLTVVVLKARNLPPSDGKGLSDPYVKVSLLQGGKKLKKKKTSVKKG 60
Query: 215 SHSPVFNESFMFDRSLG--DPIELVVSLHHDISGL-NVFLGEVHIPLNNKETSSSWW 268
+ +PVFNE+F FD + + LV+++ S N +G+V + ++ W
Sbjct: 61 TLNPVFNEAFSFDVPAEQLEEVSLVITVVDKDSVGRNEVIGQVVLGPDSGGEELEHW 117
Score = 31.0 bits (71), Expect = 0.25
Identities = 16/59 (27%), Positives = 25/59 (42%), Gaps = 6/59 (10%)
Query: 90 TSPFFGEEFQFDIPRRFRH---LAVYAYDRDRTSKTDRVLGKVTIQRSDLHRISNKEHW 145
+P F E F FD+P L + D+D + + V+G+V + EHW
Sbjct: 62 LNPVFNEAFSFDVPAEQLEEVSLVITVVDKDSVGR-NEVIGQVVLGPDS--GGEELEHW 117
>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 = 53.8 bits (130), Expect = 2e-09
Identities = 33/121 (27%), Positives = 58/121 (47%), Gaps = 12/121 (9%)
Query: 159 GKIQIGVL--STPTSLMVNVNEASGLTQVNGQ--CDPTAMVTVHYTHNKSDVQKSKVKKK 214
G+IQ+ + S L+V V++ L + DP + + +KS +K+ VKK
Sbjct: 3 GRIQLTIRYSSQRQKLIVTVHKCRNLPPCDSSDIPDPYVRLYLLPDKSKSTRRKTSVKKD 62
Query: 215 SHSPVFNESFMFDRSLGDPIE--LVVSLHHD---ISGLNVFLGEVHIPL---NNKETSSS 266
+ +PVF+E+F F SL + L V++ + +S LG+V I L + + +
Sbjct: 63 NLNPVFDETFEFPVSLEELKRRTLDVAVKNSKSFLSREKKLLGQVLIDLSDLDLSKGFTQ 122
Query: 267 W 267
W
Sbjct: 123 W 123
Score = 28.0 bits (63), Expect = 3.0
Identities = 22/70 (31%), Positives = 33/70 (47%), Gaps = 10/70 (14%)
Query: 85 SVNPVTSPFFGEEFQFDIP-----RRFRHLAVYAYDRDRTSKTDRVLGKVTIQRSDLHRI 139
++NPV F E F+F + RR +AV + S+ ++LG+V I SDL
Sbjct: 63 NLNPV----FDETFEFPVSLEELKRRTLDVAV-KNSKSFLSREKKLLGQVLIDLSDLDLS 117
Query: 140 SNKEHWFPLT 149
W+ LT
Sbjct: 118 KGFTQWYDLT 127
>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 = 53.8 bits (130), Expect = 3e-09
Identities = 35/103 (33%), Positives = 51/103 (49%), Gaps = 9/103 (8%)
Query: 167 STPTSLMVNVNEASGLT--QVNGQCDPTAMVTVHYTHNKSDV--QKSKVKKKSHSPVFNE 222
++ SL V + A L NG DP V + H DV K++VKKK+ P+F+E
Sbjct: 13 ASEQSLRVEILNARNLLPLDSNGSSDPFVKVELLPRHLFPDVPTPKTQVKKKTLFPLFDE 72
Query: 223 SFMFD-----RSLGDPIELVVSLHHDISGLNVFLGEVHIPLNN 260
SF F+ S+ + L +D+ G N F GE +PLN+
Sbjct: 73 SFEFNVPPEQCSVEGALLLFTVKDYDLLGSNDFEGEAFLPLND 115
>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 = 51.1 bits (123), Expect = 2e-08
Identities = 35/98 (35%), Positives = 48/98 (48%), Gaps = 10/98 (10%)
Query: 170 TSLMVNVNEASGLTQVNG---QCDPTAMVTVHYTHNKSDVQKSK--VKKKSHSPVFNESF 224
SL V++ E L + + +P V V+ +KS K K VKK + +PVFNE+
Sbjct: 14 GSLEVHIKECRNLAYADEKKKRSNP--YVKVYLLPDKSKQSKRKTSVKKNTTNPVFNETL 71
Query: 225 MFDRSLGDPIELVVSL---HHDISGLNVFLGEVHIPLN 259
+ S + L HHD G N FLGEV IPL+
Sbjct: 72 KYHISKSQLETRTLQLSVWHHDRFGRNTFLGEVEIPLD 109
>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 = 48.0 bits (115), Expect = 3e-07
Identities = 25/76 (32%), Positives = 36/76 (47%), Gaps = 2/76 (2%)
Query: 159 GKIQIGVLSTPTSLMVNVNEASGLTQV--NGQCDPTAMVTVHYTHNKSDVQKSKVKKKSH 216
G+I + + L V V EA L + NG DP + + QK+K KK+
Sbjct: 2 GRIYLKISVKDNKLTVEVREAKNLIPMDPNGLSDPYVKLKLIPDPKNETKQKTKTIKKTL 61
Query: 217 SPVFNESFMFDRSLGD 232
+PV+NE+F FD D
Sbjct: 62 NPVWNETFTFDLKPAD 77
Score = 26.8 bits (60), Expect = 7.6
Identities = 19/66 (28%), Positives = 37/66 (56%), Gaps = 8/66 (12%)
Query: 85 SVNPVTSPFFGEEFQFDIPR--RFRHLAVYAYDRDRTSKTDRVLGKVTIQRSDLHRISNK 142
++NPV + E F FD+ + R L++ +D DRT++ D +G ++ S+L ++
Sbjct: 60 TLNPV----WNETFTFDLKPADKDRRLSIEVWDWDRTTRND-FMGSLSFGVSELIKMPV- 113
Query: 143 EHWFPL 148
+ W+ L
Sbjct: 114 DGWYKL 119
>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 = 48.1 bits (115), Expect = 5e-07
Identities = 33/108 (30%), Positives = 47/108 (43%), Gaps = 9/108 (8%)
Query: 151 VTQDSEVQGKIQIGVLSTPTSLMVNVNEASGLTQV--NGQCDPTAMVTVHYTHNKSDVQK 208
V +SE K + + L V V EA L + G D + +K QK
Sbjct: 11 VPPESEGALKSK---KPSTGELHVWVKEAKNLPALKSGGTSDSFVKCYLLPDKSKKSKQK 67
Query: 209 SKVKKKSHSPVFNESFMFDR-SLGDPIELVVSL---HHDISGLNVFLG 252
+ V KKS +PV+N +F++D S D + + L HD N FLG
Sbjct: 68 TPVVKKSVNPVWNHTFVYDGVSPEDLSQACLELTVWDHDKLSSNDFLG 115
>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 = 47.0 bits (112), Expect = 8e-07
Identities = 33/108 (30%), Positives = 49/108 (45%), Gaps = 7/108 (6%)
Query: 167 STPTSLMVNVNEASGL--TQVNGQCDPTAMVTVHYTHNKSDVQKSKVKKKSHSPVFNESF 224
T L V V +A L V+G DP V ++Y + +K+ VKK + +PVFNESF
Sbjct: 12 PTTNRLTVVVLKARHLPKMDVSGLADPYVKVNLYYGKKRISKKKTHVKKCTLNPVFNESF 71
Query: 225 MFD--RSLGDPI--ELVVSLHHDISGLNVFLGEVHIPLNNKETSSSWW 268
+FD + I E +V L D N +G + + + W
Sbjct: 72 VFDIPSEELEDISVEFLV-LDSDRVTKNEVIGRLVLGPKASGSGGHHW 118
Score = 28.2 bits (63), Expect = 2.6
Identities = 18/58 (31%), Positives = 27/58 (46%), Gaps = 6/58 (10%)
Query: 91 SPFFGEEFQFDIP-RRFRHLAV--YAYDRDRTSKTDRVLGKVTIQRSDLHRISNKEHW 145
+P F E F FDIP ++V D DR +K + V+G++ + S HW
Sbjct: 64 NPVFNESFVFDIPSEELEDISVEFLVLDSDRVTKNE-VIGRLVLGPKASG--SGGHHW 118
>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 = 45.9 bits (109), Expect = 2e-06
Identities = 27/106 (25%), Positives = 52/106 (49%), Gaps = 5/106 (4%)
Query: 168 TPTSLMVNVNEASGLT--QVNGQCDPTAMVTVHYTHNKSDVQKSKVKKKSHSPVFNESFM 225
T + VN+ +A L +NG DP V + Y + + +K+ +KK++ +PVFNESF+
Sbjct: 13 TANRITVNIIKARNLKAMDINGTSDPYVKVWLMYKDKRVEKKKTVIKKRTLNPVFNESFI 72
Query: 226 FD---RSLGDPIELVVSLHHDISGLNVFLGEVHIPLNNKETSSSWW 268
F+ L + ++ + D N +G++++ + W
Sbjct: 73 FNIPLERLRETTLIITVMDKDRLSRNDLIGKIYLGWKSGGLELKHW 118
Score = 31.2 bits (71), Expect = 0.22
Identities = 22/70 (31%), Positives = 31/70 (44%), Gaps = 11/70 (15%)
Query: 92 PFFGEEFQFDIP-RRFRHLA--VYAYDRDRTSKTDRVLGKVTIQRSDLHRISNKEHW--- 145
P F E F F+IP R R + D+DR S+ D ++GK+ + +HW
Sbjct: 65 PVFNESFIFNIPLERLRETTLIITVMDKDRLSRND-LIGKIYL--GWKSGGLELKHWKDM 121
Query: 146 --FPLTPVTQ 153
P PV Q
Sbjct: 122 LSKPRQPVAQ 131
>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 = 44.3 bits (105), Expect = 5e-06
Identities = 22/55 (40%), Positives = 32/55 (58%), Gaps = 3/55 (5%)
Query: 207 QKSKVKKKSHSPVFNESFMFDRSLGDPIELVVSL---HHDISGLNVFLGEVHIPL 258
+K+ VKKK+ +PVFNE+ + + V++L H D G N FLGEV + L
Sbjct: 55 RKTSVKKKTLNPVFNETLRYKVEREELPTRVLNLSVWHRDSLGRNSFLGEVEVDL 109
>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 = 44.1 bits (105), Expect = 6e-06
Identities = 30/99 (30%), Positives = 39/99 (39%), Gaps = 25/99 (25%)
Query: 172 LMVNVNEASGLTQV--NGQCDPTAMVTVHYTHNKSDVQKSKVKKKSHSPVFNESFMFDRS 229
L V+V A L NG+ DP V + N V K+K KK+ +PV+NESF
Sbjct: 1 LTVDVISAENLPSADRNGKSDP--FVKFYL--NGEKVFKTKTIKKTLNPVWNESFEVP-- 54
Query: 230 LGDPIELVVSLHH----------DISGLNVFLGEVHIPL 258
V S D G + LG +I L
Sbjct: 55 -------VPSRVRAVLKVEVYDWDRGGKDDLLGSAYIDL 86
>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 = 43.9 bits (104), Expect = 1e-05
Identities = 27/94 (28%), Positives = 45/94 (47%), Gaps = 8/94 (8%)
Query: 172 LMVNVNEASGLTQVNGQCDPTAMVTVHYTHNKSDVQKSKVKKKSHSPVFNESFMF---DR 228
L+V V +A L +GQ +A V + + K ++++ K K +PV+NE +F D
Sbjct: 2 LVVEVVDAQDLMPKDGQGSSSAYVELDFDGQK---KRTRTKPKDLNPVWNEKLVFNVSDP 58
Query: 229 SLGDPIELVVSLHHDIS--GLNVFLGEVHIPLNN 260
S + L V +++D FLG V I +
Sbjct: 59 SRLSNLVLEVYVYNDRRSGRRRSFLGRVRISGTS 92
Score = 27.7 bits (62), Expect = 3.0
Identities = 23/84 (27%), Positives = 38/84 (45%), Gaps = 5/84 (5%)
Query: 91 SPFFGEEFQFDI--PRRFRHLA--VYAYDRDRTSKTDRVLGKVTIQRSDLHRISNKE-HW 145
+P + E+ F++ P R +L VY Y+ R+ + LG+V I + S
Sbjct: 44 NPVWNEKLVFNVSDPSRLSNLVLEVYVYNDRRSGRRRSFLGRVRISGTSFVPPSEAVVQR 103
Query: 146 FPLTPVTQDSEVQGKIQIGVLSTP 169
+PL S V+G+I + V T
Sbjct: 104 YPLEKRGLFSRVRGEIGLKVYITD 127
>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 = 43.2 bits (102), Expect = 2e-05
Identities = 34/109 (31%), Positives = 53/109 (48%), Gaps = 11/109 (10%)
Query: 169 PTS--LMVNVNEASGLTQ--VNGQCDPTAMVTVHYTHNKSDVQKSK--VKKKSHSPVFNE 222
PT+ L V + EA L + V G DP V +H N ++K K +KK++ +P +NE
Sbjct: 12 PTAGKLTVVILEAKNLKKMDVGGLSDP--YVKIHLMQNGKRLKKKKTTIKKRTLNPYYNE 69
Query: 223 SFMFDRSLG--DPIELVVS-LHHDISGLNVFLGEVHIPLNNKETSSSWW 268
SF F+ + L+V+ L +D G N +G+V + N W
Sbjct: 70 SFSFEVPFEQIQKVHLIVTVLDYDRIGKNDPIGKVVLGCNATGAELRHW 118
Score = 32.8 bits (75), Expect = 0.076
Identities = 22/72 (30%), Positives = 31/72 (43%), Gaps = 15/72 (20%)
Query: 92 PFFGEEFQFDIPRRFR-----HLAVYAYDRDRTSKTDRVLGKVTIQRSDLHRISNKEHWF 146
P++ E F F++P F HL V D DR K D + GKV + + + HW
Sbjct: 65 PYYNESFSFEVP--FEQIQKVHLIVTVLDYDRIGKNDPI-GKVVLGCNATG--AELRHWS 119
Query: 147 -----PLTPVTQ 153
P P+ Q
Sbjct: 120 DMLASPRRPIAQ 131
>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 = 41.5 bits (98), Expect = 5e-05
Identities = 32/122 (26%), Positives = 57/122 (46%), Gaps = 22/122 (18%)
Query: 159 GKIQ--IGVLSTPTSLMVNVNEASGL--TQVNGQCDPTAMVTVHYTHNKSDVQKSKVKKK 214
G+IQ + ++L + + +A L +G DP V ++ +K ++KVK+K
Sbjct: 3 GRIQFSVSYDFQESTLTLKILKAVELPAKDFSGTSDP--FVKIYLLPDKKHKLETKVKRK 60
Query: 215 SHSPVFNESFMFDRSLGDPIELVVSLHHDISGLNVF----------LGEVHIPLNNKETS 264
+ +P +NE+F+F+ G P E L + L V +GEV +PLN + +
Sbjct: 61 NLNPHWNETFLFE---GFPYE---KLQQRVLYLQVLDYDRFSRNDPIGEVSLPLNKVDLT 114
Query: 265 SS 266
Sbjct: 115 EE 116
>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 = 41.6 bits (98), Expect = 6e-05
Identities = 30/110 (27%), Positives = 50/110 (45%), Gaps = 9/110 (8%)
Query: 160 KIQIGV--LSTPTSLMVNVNEASGLTQV--NGQCDPTAMVTVHYTHNKSDVQKSKVKKKS 215
KI + + + L+V + L + NG DP + + K K++VKKK+
Sbjct: 1 KILVSLMYNTQRRGLIVGIIRCVNLAAMDANGYSDPFVKLYLKPDAGKKSKHKTQVKKKT 60
Query: 216 HSPVFNESFMFDRSLGD----PIELVVSLHHDISGLNVFLGEVHIPLNNK 261
+P FNE F +D D +E+ V DI N ++G + + +N K
Sbjct: 61 LNPEFNEEFFYDIKHSDLAKKTLEITV-WDKDIGKSNDYIGGLQLGINAK 109
Score = 26.5 bits (59), Expect = 8.0
Identities = 13/61 (21%), Positives = 26/61 (42%), Gaps = 10/61 (16%)
Query: 91 SPFFGEEFQFDIP-----RRFRHLAVYAYDRDRTSKTDRVLGKVTIQRSDLHRISNKEHW 145
+P F EEF +DI ++ + V+ D K++ +G + + + + HW
Sbjct: 62 NPEFNEEFFYDIKHSDLAKKTLEITVWDKDI---GKSNDYIGGLQLGINA--KGERLRHW 116
Query: 146 F 146
Sbjct: 117 L 117
>gnl|CDD|175994 cd04028, C2B_RIM1alpha, C2 domain second 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 = 146
Score = 39.7 bits (93), Expect = 4e-04
Identities = 35/122 (28%), Positives = 55/122 (45%), Gaps = 9/122 (7%)
Query: 155 SEVQGKIQIGVLSTPTSLMVNVNEASGLTQVNG-QCDPTAMVTVHYTHNKSDVQKSKVK- 212
S G IQ+G+ L V V A GL Q G + P V V+ K + K K K
Sbjct: 14 SPSMGDIQLGLYDKKGQLEVEVIRARGLVQKPGSKVLPAPYVKVYLLEGKKCIAKKKTKI 73
Query: 213 -KKSHSPVFNESFMFDRSLGDPIELVVSLHHDISGLN--VFLGEVHIPLNNKETSS---S 266
+K+ P++ + +FD S L V + D ++ VF+G I L++ + S+
Sbjct: 74 ARKTLDPLYQQQLVFDVSPTGKT-LQVIVWGDYGRMDKKVFMGVAQILLDDLDLSNLVIG 132
Query: 267 WW 268
W+
Sbjct: 133 WY 134
>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 = 38.3 bits (90), Expect = 5e-04
Identities = 17/55 (30%), Positives = 28/55 (50%), Gaps = 3/55 (5%)
Query: 172 LMVNVNEASGLTQVNGQCDPTAMVTVHYTHNKSDVQKSKVKKKSHSPVFNESFMF 226
L V ++ A L +P+ V + QKSKVK+++++PV+ E F F
Sbjct: 2 LFVYLDSAKNLPLAKSTKEPSPYVELTVGK---TTQKSKVKERTNNPVWEEGFTF 53
>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 = 39.0 bits (91), Expect = 5e-04
Identities = 20/63 (31%), Positives = 30/63 (47%), Gaps = 2/63 (3%)
Query: 166 LSTPTSLMVNVNEASGLTQVNGQCDPTAMVTVHYTHNKSDVQKSK--VKKKSHSPVFNES 223
L T L V V +A L NG+ V V+ + + K K VK+ +P+FNE+
Sbjct: 11 LPTAERLTVVVVKARNLVWDNGKTTADPFVKVYLLQDGRKISKKKTSVKRDDTNPIFNEA 70
Query: 224 FMF 226
+F
Sbjct: 71 MIF 73
>gnl|CDD|176027 cd08381, C2B_PI3K_class_II, C2 domain second 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. 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 second C2 repeat, C2B, and
has a type-I topology.
Length = 122
Score = 38.4 bits (90), Expect = 5e-04
Identities = 32/113 (28%), Positives = 51/113 (45%), Gaps = 15/113 (13%)
Query: 158 QGKIQIGVLSTPTSLMVNVNEASGLTQVNGQCDPTAMVTVH---YTHNKSDVQKSKVKKK 214
G++++ + +L V V A L ++G DP V + + +K+KV +K
Sbjct: 1 GGQVKLSISYKNGTLFVMVMHAKNLPLLDGS-DPDPYVKTYLLPDPQKTTK-RKTKVVRK 58
Query: 215 SHSPVFNESFMFDRSLGDPIELVVSLH-------HDISGLNVFLGEVHIPLNN 260
+ +P FNE ++D G P+E + HD N FLG V IPL
Sbjct: 59 TRNPTFNEMLVYD---GLPVEDLQQRVLQVSVWSHDSLVENEFLGGVCIPLKK 108
Score = 27.3 bits (61), Expect = 4.2
Identities = 13/43 (30%), Positives = 17/43 (39%), Gaps = 1/43 (2%)
Query: 107 RHLAVYAYDRDRTSKTDRVLGKVTIQRSDLHRISNKEHWFPLT 149
R L V + D + + LG V I L E W+PL
Sbjct: 81 RVLQVSVWSHDSLVENE-FLGGVCIPLKKLDLSQETEKWYPLG 122
>gnl|CDD|176033 cd08387, C2A_Synaptotagmin-8, C2A domain first repeat present in
Synaptotagmin 8. 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 = 124
Score = 38.5 bits (90), Expect = 6e-04
Identities = 28/97 (28%), Positives = 46/97 (47%), Gaps = 13/97 (13%)
Query: 172 LMVNVNEASGLT--QVNGQCDPTAMVTVHYTHNKSDVQKSKVKKKSHSPVFNESFMFDRS 229
L V + +A L +G DP V ++S+ ++SK+ KK+ +P F+ESF+F+
Sbjct: 18 LNVKLIQARNLQPRDFSGTADPYC--KVRLLPDRSNTKQSKIHKKTLNPEFDESFVFEVP 75
Query: 230 LGDPIEL------VVSLHHDISGLNVFLGEVHIPLNN 260
P EL V+ D + +G V +PL
Sbjct: 76 ---PQELPKRTLEVLLYDFDQFSRDECIGVVELPLAE 109
Score = 30.1 bits (68), Expect = 0.56
Identities = 17/62 (27%), Positives = 29/62 (46%), Gaps = 4/62 (6%)
Query: 92 PFFGEEFQFDIPRRF---RHLAVYAYDRDRTSKTDRVLGKVTIQRSDLHRISNKEHWFPL 148
P F E F F++P + R L V YD D+ S+ D +G V + +++ + W +
Sbjct: 64 PEFDESFVFEVPPQELPKRTLEVLLYDFDQFSR-DECIGVVELPLAEVDLSEKLDLWRKI 122
Query: 149 TP 150
Sbjct: 123 QS 124
>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 = 38.2 bits (89), Expect = 7e-04
Identities = 30/91 (32%), Positives = 39/91 (42%), Gaps = 8/91 (8%)
Query: 172 LMVNVNEASGLTQ--VNGQCDPTAMVTVHYTHNKSDVQKSKVKKKSHSPVFNESFMFDRS 229
L +V EA L NG DP V V Y ++ V KKS P +NE F F+
Sbjct: 2 LRCHVLEARDLAPKDRNGTSDP--FVRVFY---NGQTLETSVVKKSCYPRWNEVFEFELM 56
Query: 230 LGDPIELVVSL-HHDISGLNVFLGEVHIPLN 259
G L V + D+ N FLG+V +
Sbjct: 57 EGADSPLSVEVWDWDLVSKNDFLGKVVFSIQ 87
Score = 35.2 bits (81), Expect = 0.008
Identities = 26/85 (30%), Positives = 38/85 (44%), Gaps = 3/85 (3%)
Query: 79 QILNSPSVNPVTSPFFGEEFQFDIPR-RFRHLAVYAYDRDRTSKTDRVLGKVTIQRSDLH 137
Q L + V P + E F+F++ L+V +D D SK D LGKV L
Sbjct: 32 QTLETSVVKKSCYPRWNEVFEFELMEGADSPLSVEVWDWDLVSKND-FLGKVVFSIQTLQ 90
Query: 138 RISNKEHWFPLTPVTQ-DSEVQGKI 161
+ +E WF L P + + E G +
Sbjct: 91 QAKQEEGWFRLLPDPRAEEESGGNL 115
>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 = 37.3 bits (87), Expect = 0.001
Identities = 28/93 (30%), Positives = 40/93 (43%), Gaps = 18/93 (19%)
Query: 70 PHYYEDLCTQILNSPSV---------NPVTSPFFGEEFQF-DIPRRFRHLAVYAYDRDRT 119
PH Y C LN V NPV S EEF F D+P + ++ +
Sbjct: 22 PHPY---CVISLNEVKVARTKVREGPNPVWS----EEFVFDDLPPDVNSFTISLSNKAKR 74
Query: 120 SKTDRVLGKVTIQRSDLHRISNKEHWFPLTPVT 152
SK D + +VT+Q S L + W+PL+ +
Sbjct: 75 SK-DSEIAEVTVQLSKLQNGQETDEWYPLSSAS 106
Score = 29.6 bits (67), Expect = 0.70
Identities = 26/102 (25%), Positives = 49/102 (48%), Gaps = 10/102 (9%)
Query: 171 SLMVNVNEASGLTQVNGQCDPTAMVTVHYTHNKSDVQKSKVKKKSHSPVFNESFMFDRSL 230
SL +NV EA L V P +++++ V ++KV++ +PV++E F+FD
Sbjct: 5 SLQLNVLEAHKLP-VKHVPHPYCVISLNEVK----VARTKVRE-GPNPVWSEEFVFDDLP 58
Query: 231 GDPIELVVSLHHDIS-GLNVFLGEVHIPLN---NKETSSSWW 268
D +SL + + + EV + L+ N + + W+
Sbjct: 59 PDVNSFTISLSNKAKRSKDSEIAEVTVQLSKLQNGQETDEWY 100
>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 = 37.0 bits (86), Expect = 0.002
Identities = 21/56 (37%), Positives = 35/56 (62%), Gaps = 3/56 (5%)
Query: 207 QKSKVKKKSHSPVFNES--FMFDRSLGDPIELVVSL-HHDISGLNVFLGEVHIPLN 259
+K+ +K+ + +PV+NE+ + S + L +S+ H+D G N FLGEV IPL+
Sbjct: 55 RKTSIKRNTTNPVYNETLKYSISHSQLETRTLQLSVWHYDRFGRNTFLGEVEIPLD 110
>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 = 37.2 bits (87), Expect = 0.002
Identities = 30/99 (30%), Positives = 48/99 (48%), Gaps = 19/99 (19%)
Query: 172 LMVNVNEASGL--TQVNGQCDPTAMVTVHYTHNKSDVQKSKVKKKSHSPVFNESFMFDRS 229
L V + +A+ L + G DP V V+ +K ++KV +K+ +PVFNE+F F
Sbjct: 18 LTVGIIQAADLPAMDMGGTSDP--YVKVYLLPDKKKKFETKVHRKTLNPVFNETFTFKVP 75
Query: 230 LGDPIE--LVVSLH-------HDISGLNVFLGEVHIPLN 259
+ LV S++ HD+ +GEV +PL
Sbjct: 76 YSELGNKTLVFSVYDFDRFSKHDL------IGEVRVPLL 108
Score = 33.0 bits (76), Expect = 0.041
Identities = 19/65 (29%), Positives = 28/65 (43%), Gaps = 8/65 (12%)
Query: 91 SPFFGEEFQFDIP-----RRFRHLAVYAYDRDRTSKTDRVLGKVTIQRSDLHRISNKEHW 145
+P F E F F +P + +V YD DR SK D ++G+V + + E W
Sbjct: 63 NPVFNETFTFKVPYSELGNKTLVFSV--YDFDRFSKHD-LIGEVRVPLLTVDLGHVTEEW 119
Query: 146 FPLTP 150
L
Sbjct: 120 RDLES 124
>gnl|CDD|176036 cd08390, C2A_Synaptotagmin-15-17, C2A domain first repeat present
in Synaptotagmins 15 and 17. Synaptotagmin is a
membrane-trafficking protein characterized by a
N-terminal transmembrane region, a linker, and 2
C-terminal C2 domains. It is thought to be involved in
the trafficking and exocytosis of secretory vesicles in
non-neuronal tissues and is Ca2+ independent. Human
synaptotagmin 15 has 2 alternatively spliced forms that
encode proteins with different C-termini. The larger,
SYT15a, contains a N-terminal TM region, a putative
fatty-acylation site, and 2 tandem C terminal C2
domains. The smaller, SYT15b, lacks the C-terminal
portion of the second C2 domain. Unlike most other
synaptotagmins it is nearly absent in the brain and
rather is found in the heart, lungs, skeletal muscle,
and testis. 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 first C2
repeat, C2A, and has a type-I topology.
Length = 123
Score = 36.9 bits (86), Expect = 0.002
Identities = 23/88 (26%), Positives = 40/88 (45%), Gaps = 7/88 (7%)
Query: 186 NGQCDPTAMVTVHYTHNKSDVQKSKVKKKSHSPVFNESFMFDRSLGDPIELVVSLH-HDI 244
CDP V V ++ +SKVK+K+ +P F+E+F+F S + + L +D+
Sbjct: 33 VAHCDP--FVKVCLLPDERRSLQSKVKRKTQNPNFDETFVFQVSFKELQRRTLRLSVYDV 90
Query: 245 SGLNV--FLGEVHIPLNNKETSSS--WW 268
+ +G V PL + + W
Sbjct: 91 DRFSRHCIIGHVLFPLKDLDLVKGGVVW 118
Score = 29.5 bits (67), Expect = 0.87
Identities = 19/64 (29%), Positives = 24/64 (37%), Gaps = 8/64 (12%)
Query: 92 PFFGEEFQFDIP-----RRFRHLAVYAYDRDRTSKTDRVLGKVTIQRSDLHRISNKEHWF 146
P F E F F + RR L+VY DR ++G V DL + W
Sbjct: 63 PNFDETFVFQVSFKELQRRTLRLSVYDVDRFSRH---CIIGHVLFPLKDLDLVKGGVVWR 119
Query: 147 PLTP 150
L P
Sbjct: 120 DLEP 123
>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 = 36.0 bits (84), Expect = 0.004
Identities = 19/55 (34%), Positives = 25/55 (45%), Gaps = 7/55 (12%)
Query: 174 VNVNEASGLTQVNGQCDPTAMVTVHYTHNKSDVQKSKVKKKSHSPVFNESFMFDR 228
V V EA L V G DP V V + + VKK ++ P +NE F F+
Sbjct: 8 VRVIEARQL--VGGNIDPVVKVEV-----GGQKKYTSVKKGTNCPFYNEYFFFNF 55
>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 = 36.4 bits (85), Expect = 0.004
Identities = 22/77 (28%), Positives = 37/77 (48%), Gaps = 15/77 (19%)
Query: 186 NGQCDPTAMVTVHYTHNKSDVQKSKVKKKSHSPVFNESFMFDR-SLGDPIE--------L 236
+G DP A V+ + Q+++V K++ SP ++++ +FD L E +
Sbjct: 19 SGLSDPFARVSFL-----NQSQETEVIKETLSPTWDQTLIFDEVELYGSPEEIAQNPPLV 73
Query: 237 VVSLH-HDISGLNVFLG 252
VV L D G + FLG
Sbjct: 74 VVELFDQDSVGKDEFLG 90
>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 = 36.0 bits (84), Expect = 0.004
Identities = 23/95 (24%), Positives = 42/95 (44%), Gaps = 8/95 (8%)
Query: 178 EASGL--TQVNGQCDPTAMVTVHYTHNKSDVQKSKVKKKSHSPVFNESFMFDRSL-GDPI 234
A L NG+ DP + + K + + + +PVF + F + +L G+ I
Sbjct: 8 RARNLQPKDPNGKSDP--YLKIKLGKKKIND-RDNYIPNTLNPVFGKMFELEATLPGNSI 64
Query: 235 ELVVSL-HHDISGLNVFLGEVHIPLNNKETSSSWW 268
L +S+ +D+ G + +GE I L ++ S
Sbjct: 65 -LKISVMDYDLLGSDDLIGETVIDLEDRFFSKHRA 98
>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 = 35.9 bits (83), Expect = 0.005
Identities = 22/96 (22%), Positives = 45/96 (46%), Gaps = 5/96 (5%)
Query: 166 LSTPTSLMVNVNEASGLTQ--VNGQCDPTAMVTVHYTHNKSDVQKSKVKKKSHSPVFNES 223
L T L + + +A L + G DP V++ + +K+ VKK + +P +NE+
Sbjct: 10 LPTAGRLTLTIIKARNLKAMDITGFSDPYVKVSLMCEGRRLKKKKTSVKKNTLNPTYNEA 69
Query: 224 FMFD---RSLGDPIELVVSLHHDISGLNVFLGEVHI 256
+FD ++ + ++ + +D G N +G +
Sbjct: 70 LVFDVPPENVDNVSLIIAVVDYDRVGHNELIGVCRV 105
>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 = 36.0 bits (83), Expect = 0.005
Identities = 27/75 (36%), Positives = 40/75 (53%), Gaps = 5/75 (6%)
Query: 188 QCDPTAMVTVHYTHNKSDVQKSKVKKKSHSPVFNESFMF--DRSLGDPIELVVSLHHDIS 245
+C P V + + + +K+ VKK + +PVFNE+ + + L +L VS+ H
Sbjct: 36 KCHPYVKVCLLPDKSHNSKRKTAVKKGTVNPVFNETLKYVVEADLLSSRQLQVSVWH-SR 94
Query: 246 GL--NVFLGEVHIPL 258
L VFLGEV IPL
Sbjct: 95 TLKRRVFLGEVLIPL 109
>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 = 35.5 bits (82), Expect = 0.006
Identities = 20/75 (26%), Positives = 37/75 (49%), Gaps = 1/75 (1%)
Query: 159 GKIQIGVLSTPTSLMVNVNEASGLTQVN-GQCDPTAMVTVHYTHNKSDVQKSKVKKKSHS 217
G++++ + L ++V EA GL N G C+ +++ QK+ S +
Sbjct: 1 GQLKLSIEGQNRKLTLHVLEAKGLRSTNSGTCNSYVKISLSPDKEVRFRQKTSTVPDSAN 60
Query: 218 PVFNESFMFDRSLGD 232
P+F+E+F FD + D
Sbjct: 61 PLFHETFSFDVNERD 75
>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 = 34.9 bits (81), Expect = 0.010
Identities = 26/103 (25%), Positives = 38/103 (36%), Gaps = 23/103 (22%)
Query: 171 SLMVNVNEASGLTQVNGQCDPTAMVTVHYTHNKSD---------------VQKSKVKKKS 215
+L + + EA L PT T H K + K+ K K+
Sbjct: 5 TLKIKICEAVDLK-------PTDWSTRHAVPKKGSQLLDPYVSIDVDDTHIGKTSTKPKT 57
Query: 216 HSPVFNESFMFDRSLGDPIELVVSLHHDISGLNVFLGEVHIPL 258
+SPV+NE F + G +EL V H G + F+ I
Sbjct: 58 NSPVWNEEFTTEVHNGRNLELTV-FHDAAIGPDDFVANCTISF 99
>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 = 34.6 bits (80), Expect = 0.013
Identities = 21/88 (23%), Positives = 33/88 (37%), Gaps = 10/88 (11%)
Query: 179 ASGLTQVNGQCDPTAMVTVHYTHNKSDVQKSKVKK-KSHSPVFNESFMFDRSLGDP---- 233
A GL + V + ++ +KSKV K +P +NE F F
Sbjct: 10 AKGLQDTDFLGKIDPYVIIQC---RTQERKSKVAKGDGRNPEWNEKFKFTVEYPGWGGDT 66
Query: 234 -IELVVSLHHDISGLNVFLGEVHIPLNN 260
+ L + + S + F+GE I L
Sbjct: 67 KLILRIMDKDNFSD-DDFIGEATIHLKG 93
>gnl|CDD|176034 cd08388, C2A_Synaptotagmin-4-11, C2A domain first repeat present in
Synaptotagmins 4 and 11. Synaptotagmin is a
membrane-trafficking protein characterized by a
N-terminal transmembrane region, a linker, and 2
C-terminal C2 domains. Synaptotagmins 4 and 11, class 4
synaptotagmins, are located in the brain. Their
functions are unknown. They are distinguished from the
other synaptotagmins by having and Asp to Ser
substitution in their C2A 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 = 34.6 bits (80), Expect = 0.014
Identities = 28/105 (26%), Positives = 49/105 (46%), Gaps = 15/105 (14%)
Query: 172 LMVNVNEASGLTQVNGQC---DPTAMVTVHYTHNKSDVQKSKVKKKSHSPVFNESFMFDR 228
L+VN+ E L ++ Q DP V + K K++V +K+ +PV++E+F F
Sbjct: 18 LLVNIIECRDLPAMDEQSGTSDP--YVKLQLLPEKEHKVKTRVLRKTRNPVYDETFTF-- 73
Query: 229 SLGDPIELV--VSLHHDISGLNVF-----LGEVHIPLNNKETSSS 266
G P + +SLH + + + +GEV PL + +
Sbjct: 74 -YGIPYNQLQDLSLHFAVLSFDRYSRDDVIGEVVCPLAGADLLNE 117
>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 = 35.0 bits (81), Expect = 0.015
Identities = 36/125 (28%), Positives = 53/125 (42%), Gaps = 33/125 (26%)
Query: 172 LMVNVNEASGL--TQVNGQCDPTAMVTV---------------HYTHNKS---------D 205
L V V EA GL VNG DP M+ + K+
Sbjct: 30 LKVTVIEAKGLLAKDVNGFSDPYCMLGIVPASRERNSEKSKKRKSHRKKAVLKDTVPAKS 89
Query: 206 VQKSKVKKKSHSPVFNESFMFDRSLGDPIELVVSLHHDISGL-NVFLGEVHIPLNN--KE 262
++ ++VK ++ +PV+NE+F F+ + D LH DI + FLG V+IPL +
Sbjct: 90 IKVTEVKPQTLNPVWNETFRFE--VED--VSNDQLHLDIWDHDDDFLGCVNIPLKDLPSC 145
Query: 263 TSSSW 267
SW
Sbjct: 146 GLDSW 150
>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 = 34.4 bits (79), Expect = 0.017
Identities = 21/57 (36%), Positives = 33/57 (57%), Gaps = 8/57 (14%)
Query: 211 VKKKSHSPVFNESFMFDRSLG-------DPIELVVSLHHDISGLNVFLGEVHIPLNN 260
VK+K+ SPV+ E F+ ++L V +H ++ GL+ FLG+V IPLN+
Sbjct: 37 VKEKTTSPVWKEECSFELPGLLSGNGNRATLQLTV-MHRNLLGLDKFLGQVSIPLND 92
>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 = 34.3 bits (79), Expect = 0.022
Identities = 25/84 (29%), Positives = 42/84 (50%), Gaps = 10/84 (11%)
Query: 187 GQCDPTAMVTVHYTHNKSDVQK--SKVKKKSHSPVFNESFMFDRSLGDPIE--LVVSLHH 242
G DP ++++ ++ +K KK+ +P +NE F F +P E L+ +
Sbjct: 19 GASDPYVKISLYDPDGNGEIDSVQTKTIKKTLNPKWNEEFFFRV---NPREHRLLFEV-F 74
Query: 243 DISGL--NVFLGEVHIPLNNKETS 264
D + L + FLG+V +PLNN T
Sbjct: 75 DENRLTRDDFLGQVEVPLNNLPTE 98
>gnl|CDD|227371 COG5038, COG5038, Ca2+-dependent lipid-binding protein, contains C2
domain [General function prediction only].
Length = 1227
Score = 35.1 bits (81), Expect = 0.037
Identities = 30/123 (24%), Positives = 45/123 (36%), Gaps = 19/123 (15%)
Query: 145 WFPLTPVTQDSEVQGKIQIGVLSTPT-SLMVNVNEASGLTQV--NGQCDPTAMVTVHYTH 201
+ P+ E + + L + + L NG DP V
Sbjct: 1023 YTPVPVKLPPVE---------MVENSGYLTIMLRSGENLPSSDENGYSDPF----VKLFL 1069
Query: 202 NKSDVQKSKVKKKSHSPVFNESFM--FDRSLGDPIELVVSLHHDISGLNVFLGEVHIPLN 259
N+ V K+KV KK+ +PV+NE F + D + + V D N LG I L+
Sbjct: 1070 NEKSVYKTKVVKKTLNPVWNEEFTIEVLNRVKDVLTINV-NDWDSGEKNDLLGTAEIDLS 1128
Query: 260 NKE 262
E
Sbjct: 1129 KLE 1131
Score = 32.8 bits (75), Expect = 0.23
Identities = 28/102 (27%), Positives = 47/102 (46%), Gaps = 16/102 (15%)
Query: 163 IGVLSTPTSLMVNVNEASGL----TQVNGQCDPTAMVTVHYTHNKSDVQKSKVKKKSHSP 218
IGV+ V + A GL + +NG DP + T + + K++VKK + +P
Sbjct: 435 IGVVE------VKIKSAEGLKKSDSTINGTVDPY----ITVTFSDRVIGKTRVKKNTLNP 484
Query: 219 VFNESF-MFDRSLGDPIELVVSLHHDISGLNVFLGEVHIPLN 259
V+NE+F + S DP+ L + + V +G + L
Sbjct: 485 VWNETFYILLNSFTDPLNLSLYDFNSFKSDKV-VGSTQLDLA 525
>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 = 32.7 bits (75), Expect = 0.058
Identities = 31/89 (34%), Positives = 45/89 (50%), Gaps = 17/89 (19%)
Query: 176 VNEASGLTQVNGQCDPTAMVTVHYTHNKSDVQKSKVKKKSHSPVFN-ESFMF---DRSLG 231
++ +S LT A V V + S K+ V KKS +PV+N E F F D L
Sbjct: 14 MDRSSDLTD--------AFVEVKFG---STTYKTDVVKKSLNPVWNSEWFRFEVDDEELQ 62
Query: 232 D-PIELVVSLHHDISGLNVFLGEVHIPLN 259
D P+++ V + HD N +G+V+I LN
Sbjct: 63 DEPLQIRV-MDHDTYSANDAIGKVYIDLN 90
>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 = 32.6 bits (75), Expect = 0.060
Identities = 27/96 (28%), Positives = 43/96 (44%), Gaps = 7/96 (7%)
Query: 171 SLMVNVNEASGL--TQVNGQCDPTAMVTVHYTHNKSDVQKSKVKKKSHSPVFNESFMFDR 228
+L + A GL NG DP + + +K+ ++K K+ +P FNE+ +
Sbjct: 16 ALHCTIIRAKGLKAMDANGLSDPYVKLNLLPGASKATKLRTKTVHKTRNPEFNETLTYYG 75
Query: 229 SLGDPIEL----VVSLHHDISGLNVFLGEVHIPLNN 260
+ I+ ++ L D G N FLGE IPL
Sbjct: 76 ITEEDIQRKTLRLLVLDEDRFG-NDFLGETRIPLKK 110
>gnl|CDD|176023 cd08377, C2C_MCTP_PRT, C2 domain third repeat found in Multiple C2
domain and Transmembrane region Proteins (MCTP). MCTPs
are involved in Ca2+ signaling at the membrane. The cds
in this family contain multiple C2 domains as well as a
C-terminal PRT domain. 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 = 119
Score = 31.5 bits (72), Expect = 0.15
Identities = 25/89 (28%), Positives = 37/89 (41%), Gaps = 5/89 (5%)
Query: 76 LCTQILNSPSVNPVTSPFFGEEFQFDIPRRFRHLAVYAYDRDRTSKTDRVLGKVTIQRSD 135
L L + ++ +P + + F F I L V YD D+ K + LGKV I
Sbjct: 30 LVNARLQTHTIYKTLNPEWNKIFTFPIKDIHDVLEVTVYDEDKDKKPE-FLGKVAIP--- 85
Query: 136 LHRISNKE-HWFPLTPVTQDSEVQGKIQI 163
L I N E W+ L + +G I +
Sbjct: 86 LLSIKNGERKWYALKDKKLRTRAKGSILL 114
Score = 27.6 bits (62), Expect = 3.4
Identities = 27/90 (30%), Positives = 44/90 (48%), Gaps = 9/90 (10%)
Query: 172 LMVNVNEASGL--TQVNGQCDPTAMVTVHYTHNKSDVQKSKVKKKSHSPVFNESFMFD-R 228
L V V ASGL + G+ DP ++ + + +Q + K + +P +N+ F F +
Sbjct: 3 LQVKVIRASGLAAADIGGKSDPFCVLEL----VNARLQTHTIYK-TLNPEWNKIFTFPIK 57
Query: 229 SLGDPIELVVSLHHDISGLNVFLGEVHIPL 258
+ D +E+ V D FLG+V IPL
Sbjct: 58 DIHDVLEVTV-YDEDKDKKPEFLGKVAIPL 86
>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 = 31.4 bits (72), Expect = 0.17
Identities = 28/101 (27%), Positives = 49/101 (48%), Gaps = 14/101 (13%)
Query: 163 IGVLSTPTSLMVNVNEASGL---TQVNGQCDPTAMVTVHYTHNKSDVQKSKVKKKSHSPV 219
IGVL+ V + A GL + G DP + N+ ++ ++KVKK + +PV
Sbjct: 1 IGVLA------VTIKSARGLKGSDIIGGTVDPYVTFS---ISNRRELARTKVKKDTSNPV 51
Query: 220 FNES-FMFDRSLGDPIELVVSLHHDISGLNVFLGEVHIPLN 259
+NE+ ++ SL +P+ L V +D + +G L+
Sbjct: 52 WNETKYILVNSLTEPLNLTVYDFNDKRK-DKLIGTAEFDLS 91
>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 = 31.2 bits (71), Expect = 0.19
Identities = 21/88 (23%), Positives = 45/88 (51%), Gaps = 5/88 (5%)
Query: 172 LMVNVNEASGLTQVNGQCDPTAMVTVHYTHNKSDVQKSKVKKKSHSPVFNESFMFDRSLG 231
L+V +A+GL++ G +P ++ + K +S +K + +P ++E F+F+ S
Sbjct: 1 LLVKNIKANGLSEAAGSSNPYCVLEMDEPPQK---YQSSTQKNTSNPFWDEHFLFELS-P 56
Query: 232 DPIELVVSLH-HDISGLNVFLGEVHIPL 258
+ EL+ ++ + + FLG +P
Sbjct: 57 NSKELLFEVYDNGKKSDSKFLGLAIVPF 84
Score = 26.6 bits (59), Expect = 8.3
Identities = 18/73 (24%), Positives = 32/73 (43%), Gaps = 2/73 (2%)
Query: 90 TSPFFGEEFQFDIPRRFRHLAVYAYDRDRTSKTDRVLGKVTIQRSDLHRISNKEHWFPLT 149
++PF+ E F F++ + L YD + S + LG + +L + + FPL
Sbjct: 42 SNPFWDEHFLFELSPNSKELLFEVYDNGKKSD-SKFLGLAIVPFDELRKNPSGRQIFPLQ 100
Query: 150 PVTQDSE-VQGKI 161
+ + V G I
Sbjct: 101 GRPYEGDSVSGSI 113
>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 = 31.1 bits (71), Expect = 0.22
Identities = 21/84 (25%), Positives = 39/84 (46%), Gaps = 10/84 (11%)
Query: 179 ASGLTQVNGQCDPTAMVTVHYTHNKSDVQKSKVKKKSHSPVFNESFMFD--RSL--GDPI 234
L + G+ D A VT + +K++V + +PV+NE+F + S + +
Sbjct: 5 LKNLPGLKGKGDRIAKVTF-----RGVKKKTRVLENELNPVWNETFEWPLAGSPDPDESL 59
Query: 235 ELVVSLHHDISGLNVFLGEVHIPL 258
E+VV + + G N +G + L
Sbjct: 60 EIVVKDYEKV-GRNRLIGSATVSL 82
>gnl|CDD|214617 smart00323, RasGAP, GTPase-activator protein for Ras-like
GTPases. All alpha-helical domain that accelerates the
GTPase activity of Ras, thereby "switching" it into an
"off" position. Improved domain limits from structure.
Length = 344
Score = 32.3 bits (74), Expect = 0.23
Identities = 16/34 (47%), Positives = 21/34 (61%)
Query: 51 QDLGTLRIRIQYTADHILQPHYYEDLCTQILNSP 84
DLG+LR++ YT D IL YYE+L +L S
Sbjct: 4 GDLGSLRLKTVYTTDFILPSEYYEELLELLLFSL 37
>gnl|CDD|175980 cd04013, C2_SynGAP_like, C2 domain present in Ras GTPase activating
protein (GAP) family. SynGAP, GAP1, RasGAP, and
neurofibromin are all members of the Ras-specific GAP
(GTPase-activating protein) family. SynGAP regulates
the MAP kinase signaling pathway and is critical for
cognition and synapse function. Mutations in this gene
causes mental retardation in humans. SynGAP contains a
PH-like domain, a C2 domain, and a Ras-GAP 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 = 146
Score = 31.1 bits (71), Expect = 0.24
Identities = 17/74 (22%), Positives = 34/74 (45%), Gaps = 9/74 (12%)
Query: 93 FFGEEFQFDIPRRFRHLAVYAY---DRDRTSKTDRVLGKVTIQRSDLHRISNK---EHWF 146
F+GE F+F + V Y D+ + +++G V I + +S++ E W+
Sbjct: 53 FWGEHFEFSNLPPVSVITVNLYRESDKKKKKDKSQLIGTVNI---PVTDVSSRQFVEKWY 109
Query: 147 PLTPVTQDSEVQGK 160
P++ + + GK
Sbjct: 110 PVSTPKGNGKSGGK 123
>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 = 30.7 bits (70), Expect = 0.41
Identities = 9/33 (27%), Positives = 16/33 (48%)
Query: 195 VTVHYTHNKSDVQKSKVKKKSHSPVFNESFMFD 227
Y + + K+ K ++SP +NESF +
Sbjct: 31 FEFPYPNEEPQSGKTSTIKDTNSPEYNESFKLN 63
>gnl|CDD|177875 PLN02230, PLN02230, phosphoinositide phospholipase C 4.
Length = 598
Score = 31.6 bits (71), Expect = 0.52
Identities = 15/55 (27%), Positives = 36/55 (65%), Gaps = 1/55 (1%)
Query: 206 VQKSKVKKKSHSPVFNESFMFDRSLGDPIELVVSLH-HDISGLNVFLGEVHIPLN 259
++K+K++ + +P++N+ F+F ++ + L V +H HDI+ + F G+ +P++
Sbjct: 513 MEKTKIEYDTWTPIWNKEFIFPLAVPELALLRVEVHEHDINEKDDFGGQTCLPVS 567
>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 = 29.4 bits (67), Expect = 0.84
Identities = 19/55 (34%), Positives = 34/55 (61%), Gaps = 1/55 (1%)
Query: 207 QKSKVKKK-SHSPVFNESFMFDRSLGDPIELVVSLHHDISGLNVFLGEVHIPLNN 260
K+KV K +PV+NE+F FD ++ + L ++ + SG + FLG+ +PL++
Sbjct: 44 FKTKVVKNNGFNPVWNETFEFDVTVPELAFLRFVVYDEDSGDDDFLGQACLPLDS 98
>gnl|CDD|237834 PRK14846, truB, tRNA pseudouridine synthase B; Provisional.
Length = 345
Score = 30.4 bits (68), Expect = 0.92
Identities = 14/42 (33%), Positives = 23/42 (54%)
Query: 94 FGEEFQFDIPRRFRHLAVYAYDRDRTSKTDRVLGKVTIQRSD 135
+G++ F+ + FRHLA +AY + T+R T+ R D
Sbjct: 249 YGQKCLFNYEKDFRHLAKFAYREEFKGNTERSTTAYTLVRED 290
>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 = 29.3 bits (66), Expect = 0.99
Identities = 11/35 (31%), Positives = 16/35 (45%)
Query: 201 HNKSDVQKSKVKKKSHSPVFNESFMFDRSLGDPIE 235
+K +K K + SP +NE+F F D E
Sbjct: 34 SDKKRKFATKSKNNNWSPKYNETFQFILGNEDDPE 68
>gnl|CDD|234823 PRK00724, PRK00724, formate dehydrogenase accessory protein;
Reviewed.
Length = 263
Score = 30.1 bits (69), Expect = 1.0
Identities = 29/109 (26%), Positives = 35/109 (32%), Gaps = 42/109 (38%)
Query: 107 RHLAVYAYDRDRTSKTDRVLGKVTIQRSDLH--------RISNKEHWFPLTPVTQDSE-V 157
RH A+ D+++G L R S SE V
Sbjct: 180 RHNAL-----------DKLIGAALRAGIPLRDGALLVSGRAS--------------SEMV 214
Query: 158 Q--GKIQIGVL---STPTSLMVNVNEASGLTQVNGQCDPTAMVTVHYTH 201
Q I +L S PTSL V + E GLT V G YTH
Sbjct: 215 QKAAMAGIPILVAVSAPTSLAVELAEELGLTLV-GFARGGRF--NIYTH 260
>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 = 29.1 bits (66), Expect = 1.1
Identities = 27/97 (27%), Positives = 49/97 (50%), Gaps = 8/97 (8%)
Query: 171 SLMVNVNEASGLTQVNGQCDPTAMVTVHYTHNKSD--VQKSKVKKKSHSPVFNESFMF-- 226
L+V V +A L + V V+ ++S+ +++K KK+ +P +N++F +
Sbjct: 17 QLIVTVLQARDLPPRDDGSLRNPYVKVYLLPDRSEKSKRRTKTVKKTLNPEWNQTFEYSN 76
Query: 227 --DRSLGDPIELVVSL-HHDISGLNVFLGEVHIPLNN 260
+L + L V++ +D G N FLGEV I L +
Sbjct: 77 VRRETLKERT-LEVTVWDYDRDGENDFLGEVVIDLAD 112
>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 = 28.7 bits (65), Expect = 1.3
Identities = 21/86 (24%), Positives = 34/86 (39%), Gaps = 12/86 (13%)
Query: 190 DPTAMVTVHYTHNKSDVQKSKVKKKSHSPVFN---ESFMFDRSLGDPIELVVSLHHDISG 246
+ ++ N V ++VKKK+++P +N E + DR + +VV D
Sbjct: 12 LLSPYAELYL--NGKLVYTTRVKKKTNNPSWNASTEFLVTDRR-KSRVTVVVKDDRDRHD 68
Query: 247 LNVFLGEVHIPLN----NKETSSSWW 268
LG V I LN W+
Sbjct: 69 P--VLGSVSISLNDLIDATSVGQQWF 92
>gnl|CDD|176054 cd08409, C2B_Synaptotagmin-15, C2 domain second repeat present in
Synaptotagmin 15. Synaptotagmin is a
membrane-trafficking protein characterized by a
N-terminal transmembrane region, a linker, and 2
C-terminal C2 domains. It is thought to be involved in
the trafficking and exocytosis of secretory vesicles in
non-neuronal tissues and is Ca2+ independent. Human
synaptotagmin 15 has 2 alternatively spliced forms that
encode proteins with different C-termini. The larger,
SYT15a, contains a N-terminal TM region, a putative
fatty-acylation site, and 2 tandem C terminal C2
domains. The smaller, SYT15b, lacks the C-terminal
portion of the second C2 domain. Unlike most other
synaptotagmins it is nearly absent in the brain and
rather is found in the heart, lungs, skeletal muscle,
and testis. 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 = 137
Score = 28.5 bits (64), Expect = 2.1
Identities = 23/71 (32%), Positives = 32/71 (45%), Gaps = 3/71 (4%)
Query: 159 GKIQIGVLSTPTS--LMVNVNEASGL-TQVNGQCDPTAMVTVHYTHNKSDVQKSKVKKKS 215
G IQI + PT L V V A GL + V++ + +K++V +
Sbjct: 2 GDIQISLTYNPTLNRLTVVVLRARGLRQLDHAHTSVYVKVSLMIHNKVVKTKKTEVVDGA 61
Query: 216 HSPVFNESFMF 226
SP FNESF F
Sbjct: 62 ASPSFNESFSF 72
>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 = 28.0 bits (63), Expect = 2.3
Identities = 16/58 (27%), Positives = 28/58 (48%), Gaps = 7/58 (12%)
Query: 174 VNVNEASGLT--QVNGQCDPTAMVTVHYTHNKSDVQKSKVKKKSHSPVFNESFMFDRS 229
V+V+ A GL+ G DP ++ + + +S V+K + SP F+ +F R
Sbjct: 7 VHVHSAEGLSKQDSGGGADPYVIIKC-----EGESVRSPVQKDTLSPEFDTQAIFYRK 59
>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 = 28.0 bits (63), Expect = 2.3
Identities = 21/74 (28%), Positives = 33/74 (44%), Gaps = 7/74 (9%)
Query: 159 GKIQIGVLSTPTS--LMVNVNEASGLTQVN-GQCDPTAMVTVHYTHNKSDVQKSKVK-KK 214
G + + P++ L V V A + + G VH S Q++K K ++
Sbjct: 3 GDLDVAFEYDPSARKLTVTVIRAQDIPTKDRGGAS---SWQVHLVLLPSKKQRAKTKVQR 59
Query: 215 SHSPVFNESFMFDR 228
+PVFNE+F F R
Sbjct: 60 GPNPVFNETFTFSR 73
>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 = 28.3 bits (63), Expect = 2.5
Identities = 23/97 (23%), Positives = 45/97 (46%), Gaps = 7/97 (7%)
Query: 166 LSTPTSLMVNVNEASGL--TQVNGQCDPTAMVTVHYTHNKSDVQKSKVKKKSHSPVFNES 223
L + L V++ A L T ++ DP + + + +K+ + + P +NES
Sbjct: 10 LPSAGRLNVDIIRAKQLLQTDMSQGSDPFVKIQLVHGLKLIKTKKTSCMRGTIDPFYNES 69
Query: 224 FMF---DRSLGDPIELVVSLH-HDISGLNVFLGEVHI 256
F F L + + LV +++ H++ N F+G + I
Sbjct: 70 FSFKVPQEELEN-VSLVFTVYGHNVKSSNDFIGRIVI 105
>gnl|CDD|143455 cd07137, ALDH_F3FHI, Plant aldehyde dehydrogenase family 3 members
F1, H1, and I1 and related proteins. Aldehyde
dehydrogenase family members 3F1, 3H1, and 3I1 (ALDH3F1,
ALDH3H1, and ALDH3I1), and similar plant sequences, are
in this CD. In Arabidopsis thaliana, stress-regulated
expression of ALDH3I1 was observed in leaves and
osmotic stress expression of ALDH3H1 was observed in
root tissue, whereas, ALDH3F1 expression was not stress
responsive. Functional analysis of ALDH3I1 suggest it
may be involved in a detoxification pathway in plants
that limits aldehyde accumulation and oxidative stress.
Length = 432
Score = 28.9 bits (65), Expect = 3.1
Identities = 12/35 (34%), Positives = 17/35 (48%)
Query: 127 GKVTIQRSDLHRISNKEHWFPLTPVTQDSEVQGKI 161
G+ + DL RI N H+ L+ + D V KI
Sbjct: 271 GENPKESKDLSRIVNSHHFQRLSRLLDDPSVADKI 305
>gnl|CDD|224443 COG1526, FdhD, Uncharacterized protein required for formate
dehydrogenase activity [Energy production and
conversion].
Length = 266
Score = 28.0 bits (63), Expect = 4.3
Identities = 17/50 (34%), Positives = 21/50 (42%), Gaps = 8/50 (16%)
Query: 157 VQGKIQIGV-----LSTPTSLMVNVNEASGLTQVNGQCDPTAMVTVHYTH 201
VQ G+ +S PTSL + E GLT V G + YTH
Sbjct: 214 VQKAAMAGIPILASVSAPTSLAIEAAERLGLTLV-GFVRGGRF-NI-YTH 260
>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 = 27.3 bits (61), Expect = 4.5
Identities = 22/74 (29%), Positives = 33/74 (44%), Gaps = 5/74 (6%)
Query: 185 VNGQCDPTAMVTVHYTHNKSDVQKSKVKKKSHSPVFNESFMFDRSLGDPIELVVSLHHDI 244
V G+ DP +V V KS KV K++ +P +NE + EL + L +
Sbjct: 24 VKGKSDPYVIVRVGAQTFKS-----KVIKENLNPKWNEVYEAVVDEVPGQELEIELFDED 78
Query: 245 SGLNVFLGEVHIPL 258
+ FLG + I L
Sbjct: 79 PDKDDFLGRLSIDL 92
>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 = 26.9 bits (60), Expect = 5.6
Identities = 21/75 (28%), Positives = 28/75 (37%), Gaps = 11/75 (14%)
Query: 190 DPTAMVTVHYTHNKSDVQKSKVKKKSHSPVFNESFMFDRSLGDPIELVVSLHHDI----S 245
DP A++TV + + V KK+ P +NE F I + V
Sbjct: 22 DPFAVITV----DGGQTHSTDVAKKTLDPKWNEHFDLTVGPSSIITIQVFDQKKFKKKDQ 77
Query: 246 GLNVFLGEVHIPLNN 260
G FLG V I N
Sbjct: 78 G---FLGCVRIRANA 89
>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 = 26.9 bits (60), Expect = 6.4
Identities = 20/74 (27%), Positives = 33/74 (44%), Gaps = 8/74 (10%)
Query: 189 CDPTA---MVTVHYTHNKSDVQKSKVKKKSHSPVFNESFMFD-RSLGDPIELVVSLHHDI 244
D T+ V + + K K++V KK+ +PV+NE + P++L V D
Sbjct: 17 RDFTSSDPYVVLTLGNQKV---KTRVIKKNLNPVWNEELTLSVPNPMAPLKLEV-FDKDT 72
Query: 245 SGLNVFLGEVHIPL 258
+ +GE I L
Sbjct: 73 FSKDDSMGEAEIDL 86
>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 = 26.9 bits (60), Expect = 6.7
Identities = 17/63 (26%), Positives = 25/63 (39%), Gaps = 7/63 (11%)
Query: 76 LCTQILNSPSVNPVTSPFFGEEFQFDI-----PRRFR-HLAVYAYDRDRTSKTDRVLGKV 129
++ V TS + E FDI PR R L++YA + K + LG V
Sbjct: 42 PLCPPQSTKKVPFSTSVTWNEWLTFDILISDLPREARLCLSIYAVSEPGSKK-EVPLGWV 100
Query: 130 TIQ 132
+
Sbjct: 101 NVP 103
>gnl|CDD|223641 COG0567, SucA, 2-oxoglutarate dehydrogenase complex, dehydrogenase
(E1) component, and related enzymes [Energy production
and conversion].
Length = 906
Score = 27.6 bits (62), Expect = 9.4
Identities = 25/71 (35%), Positives = 33/71 (46%), Gaps = 2/71 (2%)
Query: 72 YYEDLCTQILNSP-SVNPVTSPFFGEEFQFDIPRRFRHLAVYAYDRDRTSKTDRVLGKVT 130
Y E+L Q L P SV+P FF + + FR LA D D T K+ +VL +
Sbjct: 17 YIEELYEQYLQDPNSVDPSWQEFF-DGLSDPVRESFRRLAKKGNDPDATLKSVKVLRLIN 75
Query: 131 IQRSDLHRISN 141
RS H +N
Sbjct: 76 AYRSRGHLHAN 86
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
0.319 0.133 0.398
Gapped
Lambda K H
0.267 0.0730 0.140
Matrix: BLOSUM62
Gap Penalties: Existence: 11, Extension: 1
Number of Sequences: 44354
Number of Hits to DB: 13,067,772
Number of extensions: 1196028
Number of successful extensions: 985
Number of sequences better than 10.0: 1
Number of HSP's gapped: 952
Number of HSP's successfully gapped: 104
Length of query: 268
Length of database: 10,937,602
Length adjustment: 95
Effective length of query: 173
Effective length of database: 6,723,972
Effective search space: 1163247156
Effective search space used: 1163247156
Neighboring words threshold: 11
Window for multiple hits: 40
X1: 16 ( 7.4 bits)
X2: 38 (14.6 bits)
X3: 64 (24.7 bits)
S1: 41 (21.8 bits)
S2: 58 (26.1 bits)