RPS-BLAST 2.2.26 [Sep-21-2011]
Database: CDD.v3.10
44,354 sequences; 10,937,602 total letters
Searching..................................................done
Query= psy6192
(174 letters)
>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 = 98.1 bits (245), Expect = 6e-27
Identities = 37/68 (54%), Positives = 51/68 (75%)
Query: 88 SKTLANTNDPKWNQSFFYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIELSSSLCT 147
+KT+ T +P+WNQ+F Y +RR LK R++E+TVWDY R G NDFLGEV+I+L+ +L
Sbjct: 57 TKTVKKTLNPEWNQTFEYSNVRRETLKERTLEVTVWDYDRDGENDFLGEVVIDLADALLD 116
Query: 148 DEPEWFYL 155
DEP W+ L
Sbjct: 117 DEPHWYPL 124
Score = 96.9 bits (242), Expect = 2e-26
Identities = 37/67 (55%), Positives = 50/67 (74%)
Query: 7 KTLANTNDPKWNQSFFYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIELSSSLCTD 66
KT+ T +P+WNQ+F Y +RR LK R++E+TVWDY R G NDFLGEV+I+L+ +L D
Sbjct: 58 KTVKKTLNPEWNQTFEYSNVRRETLKERTLEVTVWDYDRDGENDFLGEVVIDLADALLDD 117
Query: 67 EPEWFYL 73
EP W+ L
Sbjct: 118 EPHWYPL 124
>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 = 59.2 bits (144), Expect = 7e-12
Identities = 26/64 (40%), Positives = 42/64 (65%), Gaps = 2/64 (3%)
Query: 11 NTNDPKWNQSFFYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIELSS-SLCTDEPE 69
NT +P +N++ Y I +S L+ R+++++VW + R+G N FLGEV I L S L + + E
Sbjct: 61 NTTNPVFNETLKYH-ISKSQLETRTLQLSVWHHDRFGRNTFLGEVEIPLDSWDLDSQQSE 119
Query: 70 WFYL 73
W+ L
Sbjct: 120 WYPL 123
Score = 59.2 bits (144), Expect = 7e-12
Identities = 26/64 (40%), Positives = 42/64 (65%), Gaps = 2/64 (3%)
Query: 93 NTNDPKWNQSFFYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIELSS-SLCTDEPE 151
NT +P +N++ Y I +S L+ R+++++VW + R+G N FLGEV I L S L + + E
Sbjct: 61 NTTNPVFNETLKYH-ISKSQLETRTLQLSVWHHDRFGRNTFLGEVEIPLDSWDLDSQQSE 119
Query: 152 WFYL 155
W+ L
Sbjct: 120 WYPL 123
>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 = 56.3 bits (136), Expect = 4e-11
Identities = 23/66 (34%), Positives = 36/66 (54%), Gaps = 3/66 (4%)
Query: 88 SKTLANTNDPKWNQSFFYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIELSSSLCT 147
+K + NT +P WN++F + +L +EI V+D R+G +DF+G+V I LS L
Sbjct: 39 TKVVKNTLNPVWNETFEFEVP---PPELAELEIEVYDKDRFGRDDFIGQVTIPLSDLLLG 95
Query: 148 DEPEWF 153
E
Sbjct: 96 GRHEKL 101
Score = 55.6 bits (134), Expect = 9e-11
Identities = 23/65 (35%), Positives = 35/65 (53%), Gaps = 3/65 (4%)
Query: 7 KTLANTNDPKWNQSFFYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIELSSSLCTD 66
K + NT +P WN++F + +L +EI V+D R+G +DF+G+V I LS L
Sbjct: 40 KVVKNTLNPVWNETFEFEVP---PPELAELEIEVYDKDRFGRDDFIGQVTIPLSDLLLGG 96
Query: 67 EPEWF 71
E
Sbjct: 97 RHEKL 101
>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 = 57.7 bits (140), Expect = 5e-11
Identities = 20/56 (35%), Positives = 32/56 (57%)
Query: 88 SKTLANTNDPKWNQSFFYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIELSS 143
+ + + +P WN +F Y G+ DL +E+TVWD+ + NDFLG V + L +
Sbjct: 68 TPVVKKSVNPVWNHTFVYDGVSPEDLSQACLELTVWDHDKLSSNDFLGGVRLGLGT 123
Score = 57.3 bits (139), Expect = 6e-11
Identities = 20/50 (40%), Positives = 30/50 (60%)
Query: 12 TNDPKWNQSFFYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIELSS 61
+ +P WN +F Y G+ DL +E+TVWD+ + NDFLG V + L +
Sbjct: 74 SVNPVWNHTFVYDGVSPEDLSQACLELTVWDHDKLSSNDFLGGVRLGLGT 123
>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 = 52.1 bits (125), Expect = 2e-09
Identities = 25/70 (35%), Positives = 39/70 (55%), Gaps = 5/70 (7%)
Query: 88 SKTLANTNDPKWNQSFFYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIELSSSLCT 147
+K + NT +P WN++F +P D + ++ + VWD R+ +DFLGEV I LS L +
Sbjct: 36 TKVVKNTLNPVWNETFEFP---VLDPESDTLTVEVWDKDRFSKDDFLGEVEIPLSELLDS 92
Query: 148 DEP--EWFYL 155
+ W L
Sbjct: 93 GKEGELWLPL 102
Score = 50.9 bits (122), Expect = 5e-09
Identities = 25/69 (36%), Positives = 38/69 (55%), Gaps = 5/69 (7%)
Query: 7 KTLANTNDPKWNQSFFYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIELSSSLCTD 66
K + NT +P WN++F +P D + ++ + VWD R+ +DFLGEV I LS L +
Sbjct: 37 KVVKNTLNPVWNETFEFP---VLDPESDTLTVEVWDKDRFSKDDFLGEVEIPLSELLDSG 93
Query: 67 EP--EWFYL 73
+ W L
Sbjct: 94 KEGELWLPL 102
>gnl|CDD|215765 pfam00168, C2, C2 domain.
Length = 85
Score = 51.1 bits (123), Expect = 3e-09
Identities = 19/51 (37%), Positives = 30/51 (58%), Gaps = 3/51 (5%)
Query: 88 SKTLANTNDPKWNQSFFYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVI 138
+K + NT +P WN++F + L + I V+DY R+G +DF+GEV
Sbjct: 38 TKVVKNTLNPVWNETFTFEVTLPE---LAELRIEVYDYDRFGKDDFIGEVT 85
Score = 50.7 bits (122), Expect = 5e-09
Identities = 19/50 (38%), Positives = 29/50 (58%), Gaps = 3/50 (6%)
Query: 7 KTLANTNDPKWNQSFFYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVI 56
K + NT +P WN++F + L + I V+DY R+G +DF+GEV
Sbjct: 39 KVVKNTLNPVWNETFTFEVTLPE---LAELRIEVYDYDRFGKDDFIGEVT 85
>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 = 51.1 bits (123), Expect = 6e-09
Identities = 21/69 (30%), Positives = 36/69 (52%), Gaps = 1/69 (1%)
Query: 7 KTLANTNDPKWNQSFFYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIELSS-SLCT 65
K + T +P +N+ Y G+ DL+ R ++++VW + N+FLG V I L L
Sbjct: 54 KVVRKTRNPTFNEMLVYDGLPVEDLQQRVLQVSVWSHDSLVENEFLGGVCIPLKKLDLSQ 113
Query: 66 DEPEWFYLT 74
+ +W+ L
Sbjct: 114 ETEKWYPLG 122
Score = 51.1 bits (123), Expect = 6e-09
Identities = 21/69 (30%), Positives = 36/69 (52%), Gaps = 1/69 (1%)
Query: 89 KTLANTNDPKWNQSFFYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIELSS-SLCT 147
K + T +P +N+ Y G+ DL+ R ++++VW + N+FLG V I L L
Sbjct: 54 KVVRKTRNPTFNEMLVYDGLPVEDLQQRVLQVSVWSHDSLVENEFLGGVCIPLKKLDLSQ 113
Query: 148 DEPEWFYLT 156
+ +W+ L
Sbjct: 114 ETEKWYPLG 122
>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 = 49.4 bits (118), Expect = 3e-08
Identities = 25/64 (39%), Positives = 38/64 (59%), Gaps = 2/64 (3%)
Query: 11 NTNDPKWNQSFFYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIELSS-SLCTDEPE 69
NT +P +N++ Y I S L+ R+++++VW Y R+G N FLGEV I L S + + E
Sbjct: 62 NTTNPVYNETLKYS-ISHSQLETRTLQLSVWHYDRFGRNTFLGEVEIPLDSWNFDSQHEE 120
Query: 70 WFYL 73
L
Sbjct: 121 CLPL 124
Score = 49.4 bits (118), Expect = 3e-08
Identities = 25/64 (39%), Positives = 38/64 (59%), Gaps = 2/64 (3%)
Query: 93 NTNDPKWNQSFFYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIELSS-SLCTDEPE 151
NT +P +N++ Y I S L+ R+++++VW Y R+G N FLGEV I L S + + E
Sbjct: 62 NTTNPVYNETLKYS-ISHSQLETRTLQLSVWHYDRFGRNTFLGEVEIPLDSWNFDSQHEE 120
Query: 152 WFYL 155
L
Sbjct: 121 CLPL 124
>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 = 48.4 bits (116), Expect = 6e-08
Identities = 21/55 (38%), Positives = 35/55 (63%), Gaps = 1/55 (1%)
Query: 88 SKTLANTNDPKWNQSFFYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIELS 142
+KT+ T +P++N++ Y GI D++ +++ + V D R+G NDFLGE I L
Sbjct: 56 TKTVHKTRNPEFNETLTYYGITEEDIQRKTLRLLVLDEDRFG-NDFLGETRIPLK 109
Score = 47.7 bits (114), Expect = 1e-07
Identities = 21/54 (38%), Positives = 34/54 (62%), Gaps = 1/54 (1%)
Query: 7 KTLANTNDPKWNQSFFYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIELS 60
KT+ T +P++N++ Y GI D++ +++ + V D R+G NDFLGE I L
Sbjct: 57 KTVHKTRNPEFNETLTYYGITEEDIQRKTLRLLVLDEDRFG-NDFLGETRIPLK 109
>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 = 47.7 bits (114), Expect = 1e-07
Identities = 19/51 (37%), Positives = 34/51 (66%), Gaps = 1/51 (1%)
Query: 12 TNDPKWNQSFFYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIELSSS 62
T +P++N+ FFY I+ SDL +++EITVWD ND++G + + +++
Sbjct: 60 TLNPEFNEEFFYD-IKHSDLAKKTLEITVWDKDIGKSNDYIGGLQLGINAK 109
Score = 47.7 bits (114), Expect = 1e-07
Identities = 19/51 (37%), Positives = 34/51 (66%), Gaps = 1/51 (1%)
Query: 94 TNDPKWNQSFFYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIELSSS 144
T +P++N+ FFY I+ SDL +++EITVWD ND++G + + +++
Sbjct: 60 TLNPEFNEEFFYD-IKHSDLAKKTLEITVWDKDIGKSNDYIGGLQLGINAK 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 = 42.6 bits (101), Expect = 9e-06
Identities = 21/58 (36%), Positives = 35/58 (60%), Gaps = 2/58 (3%)
Query: 3 KEFAKTLANTNDPKWNQSFFYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIELS 60
K+ KT+ T +P WN++F + ++ +D K R + I VWD+ R NDF+G + +S
Sbjct: 51 KQKTKTIKKTLNPVWNETFTFD-LKPAD-KDRRLSIEVWDWDRTTRNDFMGSLSFGVS 106
Score = 42.2 bits (100), Expect = 1e-05
Identities = 20/54 (37%), Positives = 33/54 (61%), Gaps = 2/54 (3%)
Query: 89 KTLANTNDPKWNQSFFYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIELS 142
KT+ T +P WN++F + ++ +D K R + I VWD+ R NDF+G + +S
Sbjct: 55 KTIKKTLNPVWNETFTFD-LKPAD-KDRRLSIEVWDWDRTTRNDFMGSLSFGVS 106
>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 = 42.2 bits (100), Expect = 1e-05
Identities = 21/56 (37%), Positives = 31/56 (55%), Gaps = 3/56 (5%)
Query: 88 SKTLANTNDPKWNQSFFYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIELSS 143
+KT+ T +P WN+SF P R L+ + V+D+ R G +D LG I+LS
Sbjct: 36 TKTIKKTLNPVWNESFEVPVPSRVRAVLK---VEVYDWDRGGKDDLLGSAYIDLSD 88
Score = 41.4 bits (98), Expect = 2e-05
Identities = 21/55 (38%), Positives = 29/55 (52%), Gaps = 7/55 (12%)
Query: 7 KTLANTNDPKWNQSFFYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIELSS 61
KTL +P WN+SF P R L+ + V+D+ R G +D LG I+LS
Sbjct: 41 KTL----NPVWNESFEVPVPSRVRAVLK---VEVYDWDRGGKDDLLGSAYIDLSD 88
>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 = 42.0 bits (99), Expect = 2e-05
Identities = 21/99 (21%), Positives = 44/99 (44%), Gaps = 13/99 (13%)
Query: 88 SKTLANTNDPKWNQSFFYPGIRRS------------DLKLRSIEITVWDYTRYGVNDFLG 135
+K TN+P+++++F++ DL+ + + +W + +DFLG
Sbjct: 38 TKVKKKTNNPRFDEAFYFELTIGFSYEKKSFKVEEEDLEKSELRVELWHASMVSGDDFLG 97
Query: 136 EVIIELSSSLCTDEPE-WFYLTKHKNSGSNPTIDNNVHS 173
EV I L + W++L + G+ + D ++ S
Sbjct: 98 EVRIPLQGLQQAGSHQAWYFLQPREAPGTRSSNDGSLGS 136
Score = 40.0 bits (94), Expect = 1e-04
Identities = 17/75 (22%), Positives = 34/75 (45%), Gaps = 13/75 (17%)
Query: 12 TNDPKWNQSFFYPGIRRS------------DLKLRSIEITVWDYTRYGVNDFLGEVIIEL 59
TN+P+++++F++ DL+ + + +W + +DFLGEV I L
Sbjct: 44 TNNPRFDEAFYFELTIGFSYEKKSFKVEEEDLEKSELRVELWHASMVSGDDFLGEVRIPL 103
Query: 60 SSSLCTDEPE-WFYL 73
+ W++L
Sbjct: 104 QGLQQAGSHQAWYFL 118
>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 = 40.5 bits (95), Expect = 5e-05
Identities = 21/63 (33%), Positives = 34/63 (53%), Gaps = 2/63 (3%)
Query: 12 TNDPKWNQSFFYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIELSS-SLCTDEPEW 70
T +P +N++ Y + R +L R + ++VW G N FLGEV ++L S +P W
Sbjct: 63 TLNPVFNETLRYK-VEREELPTRVLNLSVWHRDSLGRNSFLGEVEVDLGSWDWSNTQPTW 121
Query: 71 FYL 73
+ L
Sbjct: 122 YPL 124
Score = 40.5 bits (95), Expect = 5e-05
Identities = 21/63 (33%), Positives = 34/63 (53%), Gaps = 2/63 (3%)
Query: 94 TNDPKWNQSFFYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIELSS-SLCTDEPEW 152
T +P +N++ Y + R +L R + ++VW G N FLGEV ++L S +P W
Sbjct: 63 TLNPVFNETLRYK-VEREELPTRVLNLSVWHRDSLGRNSFLGEVEVDLGSWDWSNTQPTW 121
Query: 153 FYL 155
+ L
Sbjct: 122 YPL 124
>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 = 39.6 bits (93), Expect = 1e-04
Identities = 24/87 (27%), Positives = 40/87 (45%), Gaps = 5/87 (5%)
Query: 7 KTLANTNDPKWNQSFFYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIELSSSLCTD 66
KT+ T +PKWN+ FF+ + + +L V+D R +DFLG+V + L++
Sbjct: 44 KTIKKTLNPKWNEEFFFR-VNPREHRLL---FEVFDENRLTRDDFLGQVEVPLNNLPTET 99
Query: 67 EPEWFYLTKHTLELQFPLSNLSKTLAN 93
T L P S+ S+ +
Sbjct: 100 PGNERRYT-FKDYLLRPRSSKSRVKGH 125
Score = 38.1 bits (89), Expect = 4e-04
Identities = 19/61 (31%), Positives = 32/61 (52%), Gaps = 4/61 (6%)
Query: 89 KTLANTNDPKWNQSFFYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIELSSSLCTD 148
KT+ T +PKWN+ FF+ + + +L V+D R +DFLG+V + L++
Sbjct: 44 KTIKKTLNPKWNEEFFFR-VNPREHRLL---FEVFDENRLTRDDFLGQVEVPLNNLPTET 99
Query: 149 E 149
Sbjct: 100 P 100
>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 = 38.9 bits (91), Expect = 2e-04
Identities = 25/76 (32%), Positives = 38/76 (50%), Gaps = 8/76 (10%)
Query: 75 KHTLELQFPLSNLSKTLANTNDPKWNQSFFYPGIRRSDLKLRSIEITVWDYTRYGVNDFL 134
KH LE + NL +P WN++F + G L+ R + + V DY R+ ND +
Sbjct: 50 KHKLETKVKRKNL--------NPHWNETFLFEGFPYEKLQQRVLYLQVLDYDRFSRNDPI 101
Query: 135 GEVIIELSSSLCTDEP 150
GEV + L+ T+E
Sbjct: 102 GEVSLPLNKVDLTEEQ 117
Score = 37.7 bits (88), Expect = 5e-04
Identities = 19/55 (34%), Positives = 31/55 (56%)
Query: 14 DPKWNQSFFYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIELSSSLCTDEP 68
+P WN++F + G L+ R + + V DY R+ ND +GEV + L+ T+E
Sbjct: 63 NPHWNETFLFEGFPYEKLQQRVLYLQVLDYDRFSRNDPIGEVSLPLNKVDLTEEQ 117
>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 = 38.2 bits (89), Expect = 4e-04
Identities = 17/51 (33%), Positives = 28/51 (54%), Gaps = 9/51 (17%)
Query: 11 NTNDPKWNQSFFYP----GIRRSDLKLRSIEITVWDYTRYGVNDFLGEVII 57
T +P +N+SF + I++ L +TV DY R G ND +G+V++
Sbjct: 61 RTLNPYYNESFSFEVPFEQIQKVHLI-----VTVLDYDRIGKNDPIGKVVL 106
Score = 38.2 bits (89), Expect = 4e-04
Identities = 17/51 (33%), Positives = 28/51 (54%), Gaps = 9/51 (17%)
Query: 93 NTNDPKWNQSFFYP----GIRRSDLKLRSIEITVWDYTRYGVNDFLGEVII 139
T +P +N+SF + I++ L +TV DY R G ND +G+V++
Sbjct: 61 RTLNPYYNESFSFEVPFEQIQKVHLI-----VTVLDYDRIGKNDPIGKVVL 106
>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 = 38.0 bits (89), Expect = 4e-04
Identities = 19/62 (30%), Positives = 30/62 (48%), Gaps = 7/62 (11%)
Query: 1 GFKEFAKTLANTNDPKWNQSFFYP---GIRRSDLKLRSIEITVWDYTRYGVNDFLGEVII 57
G K+ + L N +P WN++F +P + S+EI V DY + G N +G +
Sbjct: 25 GVKKKTRVLENELNPVWNETFEWPLAGSPDPDE----SLEIVVKDYEKVGRNRLIGSATV 80
Query: 58 EL 59
L
Sbjct: 81 SL 82
Score = 35.7 bits (83), Expect = 0.003
Identities = 17/57 (29%), Positives = 28/57 (49%), Gaps = 7/57 (12%)
Query: 88 SKTLANTNDPKWNQSFFYP---GIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIEL 141
++ L N +P WN++F +P + S+EI V DY + G N +G + L
Sbjct: 30 TRVLENELNPVWNETFEWPLAGSPDPDE----SLEIVVKDYEKVGRNRLIGSATVSL 82
>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 = 37.9 bits (88), Expect = 6e-04
Identities = 18/65 (27%), Positives = 35/65 (53%), Gaps = 1/65 (1%)
Query: 88 SKTLANTNDPKWNQSFFYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIELSSSLCT 147
+ + T DP +N+SF + + + +L+ S+ TV+ + NDF+G ++I SS +
Sbjct: 55 TSCMRGTIDPFYNESFSFK-VPQEELENVSLVFTVYGHNVKSSNDFIGRIVIGQYSSGPS 113
Query: 148 DEPEW 152
+ W
Sbjct: 114 ETNHW 118
Score = 37.6 bits (87), Expect = 7e-04
Identities = 18/63 (28%), Positives = 34/63 (53%), Gaps = 1/63 (1%)
Query: 8 TLANTNDPKWNQSFFYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIELSSSLCTDE 67
+ T DP +N+SF + + + +L+ S+ TV+ + NDF+G ++I SS ++
Sbjct: 57 CMRGTIDPFYNESFSFK-VPQEELENVSLVFTVYGHNVKSSNDFIGRIVIGQYSSGPSET 115
Query: 68 PEW 70
W
Sbjct: 116 NHW 118
>gnl|CDD|176022 cd08376, C2B_MCTP_PRT, C2 domain second repeat found in Multiple C2
domain and Transmembrane region Proteins (MCTP). MCTPs
are involved in Ca2+ signaling at the membrane. MCTP is
composed of a variable N-terminal sequence, three C2
domains, two transmembrane regions (TMRs), and a short
C-terminal sequence. It is one of four protein classes
that are anchored to membranes via a transmembrane
region; the others being synaptotagmins, extended
synaptotagmins, and ferlins. MCTPs are the only
membrane-bound C2 domain proteins that contain two
functional TMRs. MCTPs are unique in that they bind Ca2+
but not phospholipids. C2 domains fold into an 8-standed
beta-sandwich that can adopt 2 structural arrangements:
Type I and Type II, distinguished by a circular
permutation involving their N- and C-terminal beta
strands. Many C2 domains are Ca2+-dependent
membrane-targeting modules that bind a wide variety of
substances including bind phospholipids, inositol
polyphosphates, and intracellular proteins. Most C2
domain proteins are either signal transduction enzymes
that contain a single C2 domain, such as protein kinase
C, or membrane trafficking proteins which contain at
least two C2 domains, such as synaptotagmin 1. However,
there are a few exceptions to this including RIM
isoforms and some splice variants of piccolo/aczonin and
intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. This cd contains the second C2
repeat, C2B, and has a type-II topology.
Length = 116
Score = 36.9 bits (86), Expect = 9e-04
Identities = 19/61 (31%), Positives = 30/61 (49%), Gaps = 13/61 (21%)
Query: 88 SKTLANTNDPKWNQSFFYPGIRRSDLKL-----RSIEITVWDYTRYGVNDFLGEVIIELS 142
SK + T +P+W + F DL L + +EI VWD ++F+G I+LS
Sbjct: 36 SKVCSKTLNPQWLEQF--------DLHLFDDQSQILEIEVWDKDTGKKDEFIGRCEIDLS 87
Query: 143 S 143
+
Sbjct: 88 A 88
Score = 34.5 bits (80), Expect = 0.007
Identities = 18/60 (30%), Positives = 29/60 (48%), Gaps = 13/60 (21%)
Query: 7 KTLANTNDPKWNQSFFYPGIRRSDLKL-----RSIEITVWDYTRYGVNDFLGEVIIELSS 61
K + T +P+W + F DL L + +EI VWD ++F+G I+LS+
Sbjct: 37 KVCSKTLNPQWLEQF--------DLHLFDDQSQILEIEVWDKDTGKKDEFIGRCEIDLSA 88
>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 = 36.4 bits (85), Expect = 0.002
Identities = 15/57 (26%), Positives = 29/57 (50%), Gaps = 1/57 (1%)
Query: 88 SKTLANTNDPKWNQSFFYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIELSSS 144
+ T +P +N++F + + L+ S+ ITV D G N+ +G+V++ S
Sbjct: 55 TSVKKGTLNPVFNEAFSFD-VPAEQLEEVSLVITVVDKDSVGRNEVIGQVVLGPDSG 110
Score = 36.0 bits (84), Expect = 0.002
Identities = 15/56 (26%), Positives = 28/56 (50%), Gaps = 1/56 (1%)
Query: 7 KTLANTNDPKWNQSFFYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIELSSS 62
T +P +N++F + + L+ S+ ITV D G N+ +G+V++ S
Sbjct: 56 SVKKGTLNPVFNEAFSFD-VPAEQLEEVSLVITVVDKDSVGRNEVIGQVVLGPDSG 110
>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 = 36.2 bits (84), Expect = 0.002
Identities = 20/76 (26%), Positives = 32/76 (42%), Gaps = 3/76 (3%)
Query: 6 AKTLANTNDPKWNQSFFYPGIRRSDLKLRSIEITVWDYTRYGV-NDFLGEVIIELSSSLC 64
+T +P WN+ + S L +E+ V++ R G FLG V I +S +
Sbjct: 36 TRTKPKDLNPVWNEKLVFNVSDPSRLSNLVLEVYVYNDRRSGRRRSFLGRVRISGTSFVP 95
Query: 65 TDE--PEWFYLTKHTL 78
E + + L K L
Sbjct: 96 PSEAVVQRYPLEKRGL 111
Score = 35.4 bits (82), Expect = 0.004
Identities = 19/73 (26%), Positives = 32/73 (43%), Gaps = 3/73 (4%)
Query: 88 SKTLANTNDPKWNQSFFYPGIRRSDLKLRSIEITVWDYTRYGV-NDFLGEVIIELSSSLC 146
++T +P WN+ + S L +E+ V++ R G FLG V I +S +
Sbjct: 36 TRTKPKDLNPVWNEKLVFNVSDPSRLSNLVLEVYVYNDRRSGRRRSFLGRVRISGTSFVP 95
Query: 147 TDE--PEWFYLTK 157
E + + L K
Sbjct: 96 PSEAVVQRYPLEK 108
>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 = 36.2 bits (84), Expect = 0.002
Identities = 18/58 (31%), Positives = 32/58 (55%), Gaps = 2/58 (3%)
Query: 6 AKT--LANTNDPKWNQSFFYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIELSS 61
KT L T +P ++++F + GI + L+ S+ V + RY +D +GEV+ L+
Sbjct: 54 VKTRVLRKTRNPVYDETFTFYGIPYNQLQDLSLHFAVLSFDRYSRDDVIGEVVCPLAG 111
Score = 35.8 bits (83), Expect = 0.003
Identities = 18/57 (31%), Positives = 32/57 (56%), Gaps = 2/57 (3%)
Query: 89 KT--LANTNDPKWNQSFFYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIELSS 143
KT L T +P ++++F + GI + L+ S+ V + RY +D +GEV+ L+
Sbjct: 55 KTRVLRKTRNPVYDETFTFYGIPYNQLQDLSLHFAVLSFDRYSRDDVIGEVVCPLAG 111
>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 = 35.9 bits (83), Expect = 0.002
Identities = 19/75 (25%), Positives = 35/75 (46%), Gaps = 4/75 (5%)
Query: 88 SKTLANTNDPKWNQSFFYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIELSSSLCT 147
+ + + P+WN+ F + + +D L + VWD+ NDFLG+V+ + +
Sbjct: 36 TSVVKKSCYPRWNEVFEFELMEGADSPLS---VEVWDWDLVSKNDFLGKVVFSIQTLQQA 92
Query: 148 DEPE-WFYLTKHKNS 161
+ E WF L +
Sbjct: 93 KQEEGWFRLLPDPRA 107
Score = 35.2 bits (81), Expect = 0.005
Identities = 19/60 (31%), Positives = 31/60 (51%), Gaps = 4/60 (6%)
Query: 15 PKWNQSFFYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIELSSSLCTDEPE-WFYL 73
P+WN+ F + + +D L + VWD+ NDFLG+V+ + + + E WF L
Sbjct: 45 PRWNEVFEFELMEGADSPLS---VEVWDWDLVSKNDFLGKVVFSIQTLQQAKQEEGWFRL 101
>gnl|CDD|175990 cd04024, C2A_Synaptotagmin-like, C2 domain first repeat present in
Synaptotagmin-like proteins. Synaptotagmin is a
membrane-trafficking protein characterized by a
N-terminal transmembrane region, a linker, and 2
C-terminal C2 domains. Previously all synaptotagmins
were thought to be calcium sensors in the regulation of
neurotransmitter release and hormone secretion, but it
has been shown that not all of them bind calcium. Of
the 17 identified synaptotagmins only 8 bind calcium
(1-3, 5-7, 9, 10). The function of the two C2 domains
that bind calcium are: regulating the fusion step of
synaptic vesicle exocytosis (C2A) and binding to
phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the
absence of calcium ions and to phosphatidylinositol
bisphosphate (PIP2) in their presence (C2B). C2B also
regulates also the recycling step of synaptic vesicles.
C2 domains fold into an 8-standed beta-sandwich that can
adopt 2 structural arrangements: Type I and Type II,
distinguished by a circular permutation involving their
N- and C-terminal beta strands. Many C2 domains are
Ca2+-dependent membrane-targeting modules that bind a
wide variety of substances including bind phospholipids,
inositol polyphosphates, and intracellular proteins.
Most C2 domain proteins are either signal transduction
enzymes that contain a single C2 domain, such as protein
kinase C, or membrane trafficking proteins which contain
at least two C2 domains, such as synaptotagmin 1.
However, there are a few exceptions to this including
RIM isoforms and some splice variants of piccolo/aczonin
and intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. This cd contains the first C2
repeat, C2A, and has a type-I topology.
Length = 128
Score = 35.5 bits (82), Expect = 0.004
Identities = 19/72 (26%), Positives = 33/72 (45%), Gaps = 7/72 (9%)
Query: 88 SKTLANTNDPKWNQSFFYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIELSSSLCT 147
++T+ NT +PKWN +P + +++ +WD R+ D+LGE I L
Sbjct: 39 TQTIPNTLNPKWNYWCEFPIFSAQNQ---LLKLILWDKDRFAGKDYLGEFDIALEEVFAD 95
Query: 148 DE----PEWFYL 155
+ +W L
Sbjct: 96 GKTGQSDKWITL 107
Score = 35.5 bits (82), Expect = 0.004
Identities = 19/70 (27%), Positives = 31/70 (44%), Gaps = 7/70 (10%)
Query: 8 TLANTNDPKWNQSFFYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIELSSSLCTDE 67
T+ NT +PKWN +P + +++ +WD R+ D+LGE I L +
Sbjct: 41 TIPNTLNPKWNYWCEFPIFSAQNQ---LLKLILWDKDRFAGKDYLGEFDIALEEVFADGK 97
Query: 68 ----PEWFYL 73
+W L
Sbjct: 98 TGQSDKWITL 107
>gnl|CDD|176008 cd04043, C2_Munc13_fungal, C2 domain in Munc13 (mammalian
uncoordinated) proteins; fungal group. C2-like domains
are thought to be involved in phospholipid binding in a
Ca2+ independent manner in both Unc13 and Munc13.
Caenorabditis elegans Unc13 has a central domain with
sequence similarity to PKC, which includes C1 and
C2-related domains. Unc13 binds phorbol esters and DAG
with high affinity in a phospholipid manner. Mutations
in Unc13 results in abnormal neuronal connections and
impairment in cholinergic neurotransmission in the
nematode. Munc13 is the mammalian homolog which are
expressed in the brain. There are 3 isoforms
(Munc13-1, -2, -3) and are thought to play a role in
neurotransmitter release and are hypothesized to be
high-affinity receptors for phorbol esters. Unc13 and
Munc13 contain both C1 and C2 domains. There are two
C2 related domains present, one central and one at the
carboxyl end. Munc13-1 contains a third C2-like
domain. Munc13 interacts with syntaxin, synaptobrevin,
and synaptotagmin suggesting a role for these as
scaffolding proteins. C2 domains fold into an 8-standed
beta-sandwich that can adopt 2 structural arrangements:
Type I and Type II, distinguished by a circular
permutation involving their N- and C-terminal beta
strands. Many C2 domains are Ca2+-dependent
membrane-targeting modules that bind a wide variety of
substances including bind phospholipids, inositol
polyphosphates, and intracellular proteins. Most C2
domain proteins are either signal transduction enzymes
that contain a single C2 domain, such as protein kinase
C, or membrane trafficking proteins which contain at
least two C2 domains, such as synaptotagmin 1.
However, there are a few exceptions to this including
RIM isoforms and some splice variants of
piccolo/aczonin and intersectin which only have a
single C2 domain. C2 domains with a calcium binding
region have negatively charged residues, primarily
aspartates, that serve as ligands for calcium ions.
This cd contains the second C2 repeat, C2B, and has a
type-II topology.
Length = 126
Score = 34.5 bits (80), Expect = 0.007
Identities = 18/68 (26%), Positives = 31/68 (45%), Gaps = 5/68 (7%)
Query: 1 GFKEFAKT--LANTNDPKWNQSFFYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIE 58
G + AKT + +T +P+W++ F + + I TVWD + G +D G ++
Sbjct: 33 GKRRIAKTRTIYDTLNPRWDEEF---ELEVPAGEPLWISATVWDRSFVGKHDLCGRASLK 89
Query: 59 LSSSLCTD 66
L D
Sbjct: 90 LDPKRFGD 97
Score = 32.6 bits (75), Expect = 0.035
Identities = 15/60 (25%), Positives = 28/60 (46%), Gaps = 3/60 (5%)
Query: 89 KTLANTNDPKWNQSFFYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIELSSSLCTD 148
+T+ +T +P+W++ F + + I TVWD + G +D G ++L D
Sbjct: 41 RTIYDTLNPRWDEEF---ELEVPAGEPLWISATVWDRSFVGKHDLCGRASLKLDPKRFGD 97
>gnl|CDD|175993 cd04027, C2B_Munc13, C2 domain second repeat in Munc13 (mammalian
uncoordinated) proteins. C2-like domains are thought to
be involved in phospholipid binding in a Ca2+
independent manner in both Unc13 and Munc13.
Caenorabditis elegans Unc13 has a central domain with
sequence similarity to PKC, which includes C1 and
C2-related domains. Unc13 binds phorbol esters and DAG
with high affinity in a phospholipid manner. Mutations
in Unc13 results in abnormal neuronal connections and
impairment in cholinergic neurotransmission in the
nematode. Munc13 is the mammalian homolog which are
expressed in the brain. There are 3 isoforms (Munc13-1,
-2, -3) and are thought to play a role in
neurotransmitter release and are hypothesized to be
high-affinity receptors for phorbol esters. Unc13 and
Munc13 contain both C1 and C2 domains. There are two C2
related domains present, one central and one at the
carboxyl end. Munc13-1 contains a third C2-like domain.
Munc13 interacts with syntaxin, synaptobrevin, and
synaptotagmin suggesting a role for these as scaffolding
proteins. C2 domains fold into an 8-standed
beta-sandwich that can adopt 2 structural arrangements:
Type I and Type II, distinguished by a circular
permutation involving their N- and C-terminal beta
strands. Many C2 domains are Ca2+-dependent
membrane-targeting modules that bind a wide variety of
substances including bind phospholipids, inositol
polyphosphates, and intracellular proteins. Most C2
domain proteins are either signal transduction enzymes
that contain a single C2 domain, such as protein kinase
C, or membrane trafficking proteins which contain at
least two C2 domains, such as synaptotagmin 1. However,
there are a few exceptions to this including RIM
isoforms and some splice variants of piccolo/aczonin and
intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. This cd contains the second C2
repeat, C2B, and has a type-II topology.
Length = 127
Score = 34.5 bits (79), Expect = 0.007
Identities = 27/87 (31%), Positives = 41/87 (47%), Gaps = 18/87 (20%)
Query: 3 KEFAKTLANTNDPKWNQSFFYPGIRRSDLKLRSIEITVWD------------YTRYGVND 50
K+ KT+ +P WN+ F + SD I++ VWD +TR +D
Sbjct: 34 KKRTKTIPQNLNPVWNEKFHFECHNSSD----RIKVRVWDEDDDIKSRLKQKFTRES-DD 88
Query: 51 FLGEVIIELSSSLCTDEPEWFYLTKHT 77
FLG+ IIE+ +L + W+ L K T
Sbjct: 89 FLGQTIIEV-RTLSGEMDVWYNLEKRT 114
Score = 32.5 bits (74), Expect = 0.042
Identities = 25/82 (30%), Positives = 39/82 (47%), Gaps = 18/82 (21%)
Query: 88 SKTLANTNDPKWNQSFFYPGIRRSDLKLRSIEITVWD------------YTRYGVNDFLG 135
+KT+ +P WN+ F + SD I++ VWD +TR +DFLG
Sbjct: 37 TKTIPQNLNPVWNEKFHFECHNSSD----RIKVRVWDEDDDIKSRLKQKFTRES-DDFLG 91
Query: 136 EVIIELSSSLCTDEPEWFYLTK 157
+ IIE+ +L + W+ L K
Sbjct: 92 QTIIEV-RTLSGEMDVWYNLEK 112
>gnl|CDD|176021 cd08375, C2_Intersectin, C2 domain present in Intersectin. A
single instance of the C2 domain is located C terminally
in the intersectin protein. Intersectin functions as a
scaffolding protein, providing a link between the actin
cytoskeleton and the components of endocytosis and plays
a role in signal transduction. In addition to C2,
intersectin contains several additional domains
including: Eps15 homology domains, SH3 domains, a RhoGEF
domain, and a PH domain. C2 domains fold into an
8-standed beta-sandwich that can adopt 2 structural
arrangements: Type I and Type II, distinguished by a
circular permutation involving their N- and C-terminal
beta strands. Many C2 domains are Ca2+-dependent
membrane-targeting modules that bind a wide variety of
substances including bind phospholipids, inositol
polyphosphates, and intracellular proteins. Most C2
domain proteins are either signal transduction enzymes
that contain a single C2 domain, such as protein kinase
C, or membrane trafficking proteins which contain at
least two C2 domains, such as synaptotagmin 1. However,
there are a few exceptions to this including RIM
isoforms and some splice variants of piccolo/aczonin and
intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. The members here have topology
I.
Length = 136
Score = 34.7 bits (80), Expect = 0.007
Identities = 20/58 (34%), Positives = 34/58 (58%), Gaps = 7/58 (12%)
Query: 88 SKTLANTNDPKWNQS--FFYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIELSS 143
+K +++T +PKWN S FF ++ DL+ + ITV+D + +DFLG I ++
Sbjct: 51 TKVVSDTLNPKWNSSMQFF---VK--DLEQDVLCITVFDRDFFSPDDFLGRTEIRVAD 103
Score = 34.7 bits (80), Expect = 0.008
Identities = 20/57 (35%), Positives = 33/57 (57%), Gaps = 7/57 (12%)
Query: 7 KTLANTNDPKWNQS--FFYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIELSS 61
K +++T +PKWN S FF ++ DL+ + ITV+D + +DFLG I ++
Sbjct: 52 KVVSDTLNPKWNSSMQFF---VK--DLEQDVLCITVFDRDFFSPDDFLGRTEIRVAD 103
>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 = 34.4 bits (79), Expect = 0.008
Identities = 15/50 (30%), Positives = 26/50 (52%), Gaps = 1/50 (2%)
Query: 11 NTNDPKWNQSFFYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIELS 60
T +P +N++ Y + L R ++++VW FLGEV+I L+
Sbjct: 62 GTVNPVFNETLKYV-VEADLLSSRQLQVSVWHSRTLKRRVFLGEVLIPLA 110
Score = 34.4 bits (79), Expect = 0.008
Identities = 15/50 (30%), Positives = 26/50 (52%), Gaps = 1/50 (2%)
Query: 93 NTNDPKWNQSFFYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIELS 142
T +P +N++ Y + L R ++++VW FLGEV+I L+
Sbjct: 62 GTVNPVFNETLKYV-VEADLLSSRQLQVSVWHSRTLKRRVFLGEVLIPLA 110
>gnl|CDD|176024 cd08378, C2B_MCTP_PRT_plant, C2 domain second repeat found in
Multiple C2 domain and Transmembrane region Proteins
(MCTP); plant subset. MCTPs are involved in Ca2+
signaling at the membrane. Plant-MCTPs are composed of
a variable N-terminal sequence, four C2 domains, two
transmembrane regions (TMRs), and a short C-terminal
sequence. It is one of four protein classes that are
anchored to membranes via a transmembrane region; the
others being synaptotagmins, extended synaptotagmins,
and ferlins. MCTPs are the only membrane-bound C2 domain
proteins that contain two functional TMRs. MCTPs are
unique in that they bind Ca2+ but not phospholipids. C2
domains fold into an 8-standed beta-sandwich that can
adopt 2 structural arrangements: Type I and Type II,
distinguished by a circular permutation involving their
N- and C-terminal beta strands. Many C2 domains are
Ca2+-dependent membrane-targeting modules that bind a
wide variety of substances including bind phospholipids,
inositol polyphosphates, and intracellular proteins.
Most C2 domain proteins are either signal transduction
enzymes that contain a single C2 domain, such as protein
kinase C, or membrane trafficking proteins which contain
at least two C2 domains, such as synaptotagmin 1.
However, there are a few exceptions to this including
RIM isoforms and some splice variants of piccolo/aczonin
and intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. This cd contains the second C2
repeat, C2B, and has a type-II topology.
Length = 121
Score = 34.2 bits (79), Expect = 0.010
Identities = 25/85 (29%), Positives = 39/85 (45%), Gaps = 16/85 (18%)
Query: 89 KTLANTNDPKWNQSFFYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIELS------ 142
K + T++P+WNQ F + L+ ++E++VWD +DFLG V +LS
Sbjct: 33 KAIERTSNPEWNQVF---AFSKDRLQGSTLEVSVWD-KDKAKDDFLGGVCFDLSEVPTRV 88
Query: 143 ---SSLCTDEPEWFYLTKHKNSGSN 164
S L P+W+ L K
Sbjct: 89 PPDSPLA---PQWYRLEDKKGGRVG 110
Score = 33.8 bits (78), Expect = 0.013
Identities = 19/54 (35%), Positives = 31/54 (57%), Gaps = 4/54 (7%)
Query: 7 KTLANTNDPKWNQSFFYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIELS 60
K + T++P+WNQ F + L+ ++E++VWD +DFLG V +LS
Sbjct: 33 KAIERTSNPEWNQVF---AFSKDRLQGSTLEVSVWD-KDKAKDDFLGGVCFDLS 82
>gnl|CDD|176007 cd04042, C2A_MCTP_PRT, C2 domain first repeat found in Multiple C2
domain and Transmembrane region Proteins (MCTP). MCTPs
are involved in Ca2+ signaling at the membrane. MCTP is
composed of a variable N-terminal sequence, three C2
domains, two transmembrane regions (TMRs), and a short
C-terminal sequence. It is one of four protein classes
that are anchored to membranes via a transmembrane
region; the others being synaptotagmins, extended
synaptotagmins, and ferlins. MCTPs are the only
membrane-bound C2 domain proteins that contain two
functional TMRs. MCTPs are unique in that they bind Ca2+
but not phospholipids. C2 domains fold into an 8-standed
beta-sandwich that can adopt 2 structural arrangements:
Type I and Type II, distinguished by a circular
permutation involving their N- and C-terminal beta
strands. Many C2 domains are Ca2+-dependent
membrane-targeting modules that bind a wide variety of
substances including bind phospholipids, inositol
polyphosphates, and intracellular proteins. Most C2
domain proteins are either signal transduction enzymes
that contain a single C2 domain, such as protein kinase
C, or membrane trafficking proteins which contain at
least two C2 domains, such as synaptotagmin 1. However,
there are a few exceptions to this including RIM
isoforms and some splice variants of piccolo/aczonin and
intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. This cd contains the first C2
repeat, C2A, and has a type-II topology.
Length = 121
Score = 33.8 bits (78), Expect = 0.013
Identities = 22/68 (32%), Positives = 34/68 (50%), Gaps = 5/68 (7%)
Query: 88 SKTLANTNDPKWNQSFFYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIELSSSLCT 147
SKT+ +P W++ F P I L I V+DY R +DF+G ++L S+L
Sbjct: 37 SKTIYKNLNPVWDEKFTLP-IEDVTQPLY---IKVFDYDRGLTDDFMGSAFVDL-STLEL 91
Query: 148 DEPEWFYL 155
++P L
Sbjct: 92 NKPTEVKL 99
Score = 32.6 bits (75), Expect = 0.035
Identities = 22/74 (29%), Positives = 34/74 (45%), Gaps = 10/74 (13%)
Query: 7 KTLANTNDPKWNQSFFYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIELSSSLCTD 66
KT+ +P W++ F P I L I V+DY R +DF+G ++LS+
Sbjct: 38 KTIYKNLNPVWDEKFTLP-IEDVTQPLY---IKVFDYDRGLTDDFMGSAFVDLSTL---- 89
Query: 67 EPEWFYLTKHTLEL 80
E T+ L+L
Sbjct: 90 --ELNKPTEVKLKL 101
>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 = 34.0 bits (78), Expect = 0.014
Identities = 19/68 (27%), Positives = 30/68 (44%), Gaps = 5/68 (7%)
Query: 11 NTNDPKWNQ--SFFYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIELSS-SLCTDE 67
T P W + SF PG+ + ++++TV G++ FLG+V I L+
Sbjct: 40 KTTSPVWKEECSFELPGLLSGNGNRATLQLTVMHRNLLGLDKFLGQVSIPLNDLDEDKGR 99
Query: 68 P--EWFYL 73
WF L
Sbjct: 100 RRTRWFKL 107
Score = 34.0 bits (78), Expect = 0.014
Identities = 19/68 (27%), Positives = 30/68 (44%), Gaps = 5/68 (7%)
Query: 93 NTNDPKWNQ--SFFYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIELSS-SLCTDE 149
T P W + SF PG+ + ++++TV G++ FLG+V I L+
Sbjct: 40 KTTSPVWKEECSFELPGLLSGNGNRATLQLTVMHRNLLGLDKFLGQVSIPLNDLDEDKGR 99
Query: 150 P--EWFYL 155
WF L
Sbjct: 100 RRTRWFKL 107
>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 = 33.8 bits (78), Expect = 0.014
Identities = 17/71 (23%), Positives = 37/71 (52%), Gaps = 4/71 (5%)
Query: 7 KTLANTNDPKWNQSFFYPGIRRSDLKLRSIEITVWDYTRYGV--NDFLGEVIIELSSS-L 63
+ +P ++++F +P + +LK R++++ V + + LG+V+I+LS L
Sbjct: 58 SVKKDNLNPVFDETFEFP-VSLEELKRRTLDVAVKNSKSFLSREKKLLGQVLIDLSDLDL 116
Query: 64 CTDEPEWFYLT 74
+W+ LT
Sbjct: 117 SKGFTQWYDLT 127
Score = 33.8 bits (78), Expect = 0.014
Identities = 17/71 (23%), Positives = 37/71 (52%), Gaps = 4/71 (5%)
Query: 89 KTLANTNDPKWNQSFFYPGIRRSDLKLRSIEITVWDYTRYGV--NDFLGEVIIELSSS-L 145
+ +P ++++F +P + +LK R++++ V + + LG+V+I+LS L
Sbjct: 58 SVKKDNLNPVFDETFEFP-VSLEELKRRTLDVAVKNSKSFLSREKKLLGQVLIDLSDLDL 116
Query: 146 CTDEPEWFYLT 156
+W+ LT
Sbjct: 117 SKGFTQWYDLT 127
>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 = 33.0 bits (76), Expect = 0.019
Identities = 21/70 (30%), Positives = 34/70 (48%), Gaps = 8/70 (11%)
Query: 88 SKTLANTNDPKWNQSFFYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIELSSSLCT 147
K+L +P WN +F + +L+ ++I V D+ Y ND +G+V I+L+ L
Sbjct: 40 KKSL----NPVWNSEWFRFEVDDEELQDEPLQIRVMDHDTYSANDAIGKVYIDLNPLLLK 95
Query: 148 DEPE----WF 153
D WF
Sbjct: 96 DSVSQISGWF 105
Score = 33.0 bits (76), Expect = 0.021
Identities = 21/69 (30%), Positives = 34/69 (49%), Gaps = 8/69 (11%)
Query: 7 KTLANTNDPKWNQSFFYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIELSSSLCTD 66
K+L +P WN +F + +L+ ++I V D+ Y ND +G+V I+L+ L D
Sbjct: 41 KSL----NPVWNSEWFRFEVDDEELQDEPLQIRVMDHDTYSANDAIGKVYIDLNPLLLKD 96
Query: 67 EPE----WF 71
WF
Sbjct: 97 SVSQISGWF 105
>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 = 33.2 bits (76), Expect = 0.023
Identities = 15/47 (31%), Positives = 26/47 (55%), Gaps = 1/47 (2%)
Query: 11 NTNDPKWNQSFFYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVII 57
T +P +N+SF + I L+ ++ ITV D R ND +G++ +
Sbjct: 61 RTLNPVFNESFIF-NIPLERLRETTLIITVMDKDRLSRNDLIGKIYL 106
Score = 33.2 bits (76), Expect = 0.023
Identities = 15/47 (31%), Positives = 26/47 (55%), Gaps = 1/47 (2%)
Query: 93 NTNDPKWNQSFFYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVII 139
T +P +N+SF + I L+ ++ ITV D R ND +G++ +
Sbjct: 61 RTLNPVFNESFIF-NIPLERLRETTLIITVMDKDRLSRNDLIGKIYL 106
>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 = 33.0 bits (76), Expect = 0.025
Identities = 20/69 (28%), Positives = 38/69 (55%), Gaps = 6/69 (8%)
Query: 3 KEFAKTLANTNDPKWNQSFFYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIELSS- 61
K KTL +P +N++F + + S+L +++ +V+D+ R+ +D +GEV + L +
Sbjct: 56 KVHRKTL----NPVFNETFTFK-VPYSELGNKTLVFSVYDFDRFSKHDLIGEVRVPLLTV 110
Query: 62 SLCTDEPEW 70
L EW
Sbjct: 111 DLGHVTEEW 119
Score = 33.0 bits (76), Expect = 0.028
Identities = 19/65 (29%), Positives = 37/65 (56%), Gaps = 6/65 (9%)
Query: 89 KTLANTNDPKWNQSFFYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIELSS-SLCT 147
KTL +P +N++F + + S+L +++ +V+D+ R+ +D +GEV + L + L
Sbjct: 60 KTL----NPVFNETFTFK-VPYSELGNKTLVFSVYDFDRFSKHDLIGEVRVPLLTVDLGH 114
Query: 148 DEPEW 152
EW
Sbjct: 115 VTEEW 119
>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 = 32.7 bits (75), Expect = 0.030
Identities = 19/65 (29%), Positives = 31/65 (47%), Gaps = 9/65 (13%)
Query: 78 LELQFPLS-NLSKTLANTNDPKWNQSFFYPGIRRSDLKLRSIEI--TVWDYTRYGVNDFL 134
LE+ P S T NT++P W++ F + +L S E+ V+D + + FL
Sbjct: 24 LEMDEPPQKYQSSTQKNTSNPFWDEHFLF------ELSPNSKELLFEVYDNGKKSDSKFL 77
Query: 135 GEVII 139
G I+
Sbjct: 78 GLAIV 82
Score = 31.6 bits (72), Expect = 0.074
Identities = 15/52 (28%), Positives = 26/52 (50%), Gaps = 8/52 (15%)
Query: 8 TLANTNDPKWNQSFFYPGIRRSDLKLRSIEI--TVWDYTRYGVNDFLGEVII 57
T NT++P W++ F + +L S E+ V+D + + FLG I+
Sbjct: 37 TQKNTSNPFWDEHFLF------ELSPNSKELLFEVYDNGKKSDSKFLGLAIV 82
>gnl|CDD|176001 cd04036, C2_cPLA2, C2 domain present in cytosolic PhosphoLipase A2
(cPLA2). A single copy of the C2 domain is present in
cPLA2 which releases arachidonic acid from membranes
initiating the biosynthesis of potent inflammatory
mediators such as prostaglandins, leukotrienes, and
platelet-activating factor. C2 domains fold into an
8-standed beta-sandwich that can adopt 2 structural
arrangements: Type I and Type II, distinguished by a
circular permutation involving their N- and C-terminal
beta strands. Many C2 domains are Ca2+-dependent
membrane-targeting modules that bind a wide variety of
substances including bind phospholipids, inositol
polyphosphates, and intracellular proteins. Most C2
domain proteins are either signal transduction enzymes
that contain a single C2 domain, such as protein kinase
C, or membrane trafficking proteins which contain at
least two C2 domains, such as synaptotagmin 1. However,
there are a few exceptions to this including RIM
isoforms and some splice variants of piccolo/aczonin and
intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. Members of this cd have a
type-II topology.
Length = 119
Score = 31.5 bits (72), Expect = 0.073
Identities = 23/85 (27%), Positives = 43/85 (50%), Gaps = 16/85 (18%)
Query: 7 KTLANTNDPKWNQSFFYPGIRRSDLKLRSI-EITVWDYTRYGVNDFLGEVIIELSSSLCT 65
KT+ N+ +P WN++F + R +++++ E+TV D Y ++D LG V+ ++ S L
Sbjct: 40 KTIKNSINPVWNETFEF----RIQSQVKNVLELTVMD-EDYVMDDHLGTVLFDV-SKLKL 93
Query: 66 DEPEWFYLTKHTLELQFPLSNLSKT 90
E + + F L+ K
Sbjct: 94 GE---------KVRVTFSLNPQGKE 109
Score = 31.1 bits (71), Expect = 0.13
Identities = 18/56 (32%), Positives = 35/56 (62%), Gaps = 6/56 (10%)
Query: 89 KTLANTNDPKWNQSFFYPGIRRSDLKLRSI-EITVWDYTRYGVNDFLGEVIIELSS 143
KT+ N+ +P WN++F + R +++++ E+TV D Y ++D LG V+ ++S
Sbjct: 40 KTIKNSINPVWNETFEF----RIQSQVKNVLELTVMD-EDYVMDDHLGTVLFDVSK 90
>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 = 32.0 bits (73), Expect = 0.082
Identities = 19/68 (27%), Positives = 30/68 (44%), Gaps = 11/68 (16%)
Query: 88 SKTLANTNDPKWNQSFFYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIELSSSLCT 147
+TL +P WN++F + D+ + + +WD+ +DFLG V I L
Sbjct: 97 PQTL----NPVWNETFRF---EVEDVSNDQLHLDIWDHD----DDFLGCVNIPLKDLPSC 145
Query: 148 DEPEWFYL 155
WF L
Sbjct: 146 GLDSWFKL 153
Score = 31.2 bits (71), Expect = 0.15
Identities = 18/62 (29%), Positives = 28/62 (45%), Gaps = 7/62 (11%)
Query: 12 TNDPKWNQSFFYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIELSSSLCTDEPEWF 71
T +P WN++F + D+ + + +WD+ +DFLG V I L WF
Sbjct: 99 TLNPVWNETFRF---EVEDVSNDQLHLDIWDHD----DDFLGCVNIPLKDLPSCGLDSWF 151
Query: 72 YL 73
L
Sbjct: 152 KL 153
>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 = 31.5 bits (72), Expect = 0.085
Identities = 18/56 (32%), Positives = 24/56 (42%), Gaps = 9/56 (16%)
Query: 88 SKTLANTNDPKWNQSF-FYPGIRRSDLKLRSIEITVWDYTRYGVND--FLGEVIIE 140
+ T DPKWN+ F + S I I V+D ++ D FLG V I
Sbjct: 37 TDVAKKTLDPKWNEHFDLT--VGPSS----IITIQVFDQKKFKKKDQGFLGCVRIR 86
Score = 31.1 bits (71), Expect = 0.13
Identities = 18/51 (35%), Positives = 23/51 (45%), Gaps = 9/51 (17%)
Query: 11 NTNDPKWNQSF-FYPGIRRSDLKLRSIEITVWDYTRYGVND--FLGEVIIE 58
T DPKWN+ F + S I I V+D ++ D FLG V I
Sbjct: 42 KTLDPKWNEHFDLT--VGPSS----IITIQVFDQKKFKKKDQGFLGCVRIR 86
>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 = 30.6 bits (70), Expect = 0.13
Identities = 12/51 (23%), Positives = 26/51 (50%), Gaps = 1/51 (1%)
Query: 12 TNDPKWNQSFFYP-GIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIELSS 61
TN P +N+ FF+ +L + I+I+V+D + +G +++ +
Sbjct: 42 TNCPFYNEYFFFNFHESPDELFDKIIKISVYDSRSLRSDTLIGSFKLDVGT 92
Score = 30.6 bits (70), Expect = 0.13
Identities = 12/51 (23%), Positives = 26/51 (50%), Gaps = 1/51 (1%)
Query: 94 TNDPKWNQSFFYP-GIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIELSS 143
TN P +N+ FF+ +L + I+I+V+D + +G +++ +
Sbjct: 42 TNCPFYNEYFFFNFHESPDELFDKIIKISVYDSRSLRSDTLIGSFKLDVGT 92
>gnl|CDD|176020 cd08374, C2F_Ferlin, C2 domain sixth 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 sixth C2
repeat, C2E, and has a type-II topology.
Length = 133
Score = 30.7 bits (70), Expect = 0.17
Identities = 10/45 (22%), Positives = 21/45 (46%), Gaps = 1/45 (2%)
Query: 16 KWNQSFFYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIELS 60
+ F+ + + + VWD ++ +DFLG + ++LS
Sbjct: 76 IKKEHFWSLDETEYKIPPKLT-LQVWDNDKFSPDDFLGSLELDLS 119
Score = 30.7 bits (70), Expect = 0.17
Identities = 10/45 (22%), Positives = 21/45 (46%), Gaps = 1/45 (2%)
Query: 98 KWNQSFFYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIELS 142
+ F+ + + + VWD ++ +DFLG + ++LS
Sbjct: 76 IKKEHFWSLDETEYKIPPKLT-LQVWDNDKFSPDDFLGSLELDLS 119
>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 = 30.4 bits (69), Expect = 0.24
Identities = 17/51 (33%), Positives = 25/51 (49%), Gaps = 10/51 (19%)
Query: 14 DPKWNQSFF----YPGIRR-SDLKLRSIEITVWDYTRYGVNDFLGEVIIEL 59
+P+WN+ F YPG + L LR + D + +DF+GE I L
Sbjct: 46 NPEWNEKFKFTVEYPGWGGDTKLILR-----IMDKDNFSDDDFIGEATIHL 91
Score = 30.4 bits (69), Expect = 0.24
Identities = 17/51 (33%), Positives = 25/51 (49%), Gaps = 10/51 (19%)
Query: 96 DPKWNQSFF----YPGIRR-SDLKLRSIEITVWDYTRYGVNDFLGEVIIEL 141
+P+WN+ F YPG + L LR + D + +DF+GE I L
Sbjct: 46 NPEWNEKFKFTVEYPGWGGDTKLILR-----IMDKDNFSDDDFIGEATIHL 91
>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 = 30.0 bits (68), Expect = 0.27
Identities = 19/57 (33%), Positives = 30/57 (52%), Gaps = 16/57 (28%)
Query: 7 KTLANTNDPKWNQSFFYPGIRRSDLKLRSI----EITVWDYTRYGVNDFLGEVIIEL 59
KTL +P+WN+ F +P ++ I E+TV+D + +FLG+V I L
Sbjct: 42 KTL----NPEWNKIFTFP--------IKDIHDVLEVTVYDEDKDKKPEFLGKVAIPL 86
Score = 30.0 bits (68), Expect = 0.27
Identities = 19/57 (33%), Positives = 30/57 (52%), Gaps = 16/57 (28%)
Query: 89 KTLANTNDPKWNQSFFYPGIRRSDLKLRSI----EITVWDYTRYGVNDFLGEVIIEL 141
KTL +P+WN+ F +P ++ I E+TV+D + +FLG+V I L
Sbjct: 42 KTL----NPEWNKIFTFP--------IKDIHDVLEVTVYDEDKDKKPEFLGKVAIPL 86
>gnl|CDD|175988 cd04021, C2_E3_ubiquitin_ligase, C2 domain present in E3
ubiquitin ligase. E3 ubiquitin ligase is part of the
ubiquitylation mechanism responsible for controlling
surface expression of membrane proteins. The
sequential action of several enzymes are involved:
ubiquitin-activating enzyme E1, ubiquitin-conjugating
enzyme E2, and ubiquitin-protein ligase E3 which is
responsible for substrate recognition and promoting the
transfer of ubiquitin to the target protein. E3
ubiquitin ligase is composed of an N-terminal C2
domain, 4 WW domains, and a HECTc domain. C2 domains
fold into an 8-standed beta-sandwich that can adopt 2
structural arrangements: Type I and Type II,
distinguished by a circular permutation involving their
N- and C-terminal beta strands. Many C2 domains are
Ca2+-dependent membrane-targeting modules that bind a
wide variety of substances including bind
phospholipids, inositol polyphosphates, and
intracellular proteins. Most C2 domain proteins are
either signal transduction enzymes that contain a
single C2 domain, such as protein kinase C, or membrane
trafficking proteins which contain at least two C2
domains, such as synaptotagmin 1. However, there are a
few exceptions to this including RIM isoforms and some
splice variants of piccolo/aczonin and intersectin
which only have a single C2 domain. C2 domains with a
calcium binding region have negatively charged
residues, primarily aspartates, that serve as ligands
for calcium ions.
Length = 125
Score = 29.6 bits (67), Expect = 0.43
Identities = 16/53 (30%), Positives = 26/53 (49%), Gaps = 5/53 (9%)
Query: 11 NTNDPKWNQSFFYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIELSSSL 63
T++PKWN+ F +S L+ + VW + + LGE ++LS L
Sbjct: 43 KTSNPKWNEHFTVLVTPQSTLEFK-----VWSHHTLKADVLLGEASLDLSDIL 90
Score = 29.6 bits (67), Expect = 0.43
Identities = 16/53 (30%), Positives = 26/53 (49%), Gaps = 5/53 (9%)
Query: 93 NTNDPKWNQSFFYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIELSSSL 145
T++PKWN+ F +S L+ + VW + + LGE ++LS L
Sbjct: 43 KTSNPKWNEHFTVLVTPQSTLEFK-----VWSHHTLKADVLLGEASLDLSDIL 90
>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 = 29.1 bits (66), Expect = 0.46
Identities = 17/56 (30%), Positives = 24/56 (42%), Gaps = 8/56 (14%)
Query: 7 KTLANTNDPKWNQS--FFYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIELS 60
+ TN+P WN S F R+S + + V D R + LG V I L+
Sbjct: 30 RVKKKTNNPSWNASTEFLVTDRRKSRVT-----VVVKDD-RDRHDPVLGSVSISLN 79
Score = 29.1 bits (66), Expect = 0.46
Identities = 17/56 (30%), Positives = 24/56 (42%), Gaps = 8/56 (14%)
Query: 89 KTLANTNDPKWNQS--FFYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIELS 142
+ TN+P WN S F R+S + + V D R + LG V I L+
Sbjct: 30 RVKKKTNNPSWNASTEFLVTDRRKSRVT-----VVVKDD-RDRHDPVLGSVSISLN 79
>gnl|CDD|175998 cd04032, C2_Perforin, C2 domain of Perforin. Perforin contains a
single copy of a C2 domain in its C-terminus and plays a
role in lymphocyte-mediated cytotoxicity. Mutations in
perforin leads to familial hemophagocytic
lymphohistiocytosis type 2. The function of perforin is
calcium dependent and the C2 domain is thought to confer
this binding to target cell membranes. C2 domains fold
into an 8-standed beta-sandwich that can adopt 2
structural arrangements: Type I and Type II,
distinguished by a circular permutation involving their
N- and C-terminal beta strands. Many C2 domains are
Ca2+-dependent membrane-targeting modules that bind a
wide variety of substances including bind phospholipids,
inositol polyphosphates, and intracellular proteins.
Most C2 domain proteins are either signal transduction
enzymes that contain a single C2 domain, such as protein
kinase C, or membrane trafficking proteins which contain
at least two C2 domains, such as synaptotagmin 1.
However, there are a few exceptions to this including
RIM isoforms and some splice variants of piccolo/aczonin
and intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions.
Length = 127
Score = 29.2 bits (66), Expect = 0.56
Identities = 16/57 (28%), Positives = 25/57 (43%), Gaps = 4/57 (7%)
Query: 88 SKTLANTNDPKWNQSF-FYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIELSS 143
++ + N N+P+WN +F F KLR VWD +D LG + +
Sbjct: 63 TEVIWNNNNPRWNATFDFGSVELSPGGKLR---FEVWDRDNGWDDDLLGTCSVVPEA 116
Score = 29.2 bits (66), Expect = 0.68
Identities = 16/56 (28%), Positives = 24/56 (42%), Gaps = 4/56 (7%)
Query: 7 KTLANTNDPKWNQSF-FYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIELSS 61
+ + N N+P+WN +F F KLR VWD +D LG + +
Sbjct: 64 EVIWNNNNPRWNATFDFGSVELSPGGKLR---FEVWDRDNGWDDDLLGTCSVVPEA 116
>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 = 28.8 bits (65), Expect = 0.67
Identities = 18/61 (29%), Positives = 29/61 (47%), Gaps = 14/61 (22%)
Query: 88 SKTLANTNDPKWNQSF-----FYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIELS 142
SK + +PKWN+ + PG + +EI ++D +DFLG + I+L
Sbjct: 43 SKVIKENLNPKWNEVYEAVVDEVPG--------QELEIELFDEDP-DKDDFLGRLSIDLG 93
Query: 143 S 143
S
Sbjct: 94 S 94
Score = 27.3 bits (61), Expect = 2.8
Identities = 17/60 (28%), Positives = 28/60 (46%), Gaps = 14/60 (23%)
Query: 7 KTLANTNDPKWNQSF-----FYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIELSS 61
K + +PKWN+ + PG + +EI ++D +DFLG + I+L S
Sbjct: 44 KVIKENLNPKWNEVYEAVVDEVPG--------QELEIELFDEDP-DKDDFLGRLSIDLGS 94
>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 = 28.8 bits (65), Expect = 0.77
Identities = 13/55 (23%), Positives = 31/55 (56%), Gaps = 1/55 (1%)
Query: 88 SKTLANTNDPKWNQSFFYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIELS 142
SK T +P ++++F + + +L+ R++ ++V+D R+ + +G V+ L
Sbjct: 54 SKVKRKTQNPNFDETFVFQ-VSFKELQRRTLRLSVYDVDRFSRHCIIGHVLFPLK 107
Score = 28.4 bits (64), Expect = 1.0
Identities = 11/49 (22%), Positives = 29/49 (59%), Gaps = 1/49 (2%)
Query: 12 TNDPKWNQSFFYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIELS 60
T +P ++++F + + +L+ R++ ++V+D R+ + +G V+ L
Sbjct: 60 TQNPNFDETFVFQ-VSFKELQRRTLRLSVYDVDRFSRHCIIGHVLFPLK 107
>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 = 28.7 bits (65), Expect = 0.94
Identities = 19/53 (35%), Positives = 27/53 (50%), Gaps = 11/53 (20%)
Query: 11 NTNDPKWNQSF----FYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIEL 59
NT +P + + F PG S LK I+V DY G +D +GE +I+L
Sbjct: 43 NTLNPVFGKMFELEATLPG--NSILK-----ISVMDYDLLGSDDLIGETVIDL 88
Score = 28.7 bits (65), Expect = 0.94
Identities = 19/53 (35%), Positives = 27/53 (50%), Gaps = 11/53 (20%)
Query: 93 NTNDPKWNQSF----FYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIEL 141
NT +P + + F PG S LK I+V DY G +D +GE +I+L
Sbjct: 43 NTLNPVFGKMFELEATLPG--NSILK-----ISVMDYDLLGSDDLIGETVIDL 88
>gnl|CDD|225135 COG2225, AceB, Malate synthase [Energy production and conversion].
Length = 545
Score = 29.3 bits (66), Expect = 1.0
Identities = 17/59 (28%), Positives = 26/59 (44%), Gaps = 9/59 (15%)
Query: 78 LELQFPLSNLSKTLANTNDPKWNQSFFYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGE 136
L F + +T+ + +W S +YP +DL R +EIT R V + L E
Sbjct: 66 LLPDF----VVETMNARYNARW-GSLYYP----TDLIDRGVEITGPAVDRKMVINALNE 115
Score = 29.3 bits (66), Expect = 1.3
Identities = 14/42 (33%), Positives = 20/42 (47%), Gaps = 5/42 (11%)
Query: 13 NDPKWNQSFFYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGE 54
+ +W S +YP +DL R +EIT R V + L E
Sbjct: 79 YNARW-GSLYYP----TDLIDRGVEITGPAVDRKMVINALNE 115
>gnl|CDD|175985 cd04018, C2C_Ferlin, C2 domain third repeat in Ferlin. Ferlins are
involved in vesicle fusion events. Ferlins and other
proteins, such as Synaptotagmins, are implicated in
facilitating the fusion process when cell membranes fuse
together. There are six known human Ferlins: Dysferlin
(Fer1L1), Otoferlin (Fer1L2), Myoferlin (Fer1L3),
Fer1L4, Fer1L5, and Fer1L6. Defects in these genes can
lead to a wide range of diseases including muscular
dystrophy (dysferlin), deafness (otoferlin), and
infertility (fer-1, fertilization factor-1).
Structurally they have 6 tandem C2 domains, designated
as (C2A-C2F) and a single C-terminal transmembrane
domain, though there is a new study that disputes this
and claims that there are actually 7 tandem C2 domains
with another C2 domain inserted between C2D and C2E.
In a subset of them (Dysferlin, Myoferlin, and Fer1)
there is an additional conserved domain called DysF. C2
domains fold into an 8-standed beta-sandwich that can
adopt 2 structural arrangements: Type I and Type II,
distinguished by a circular permutation involving their
N- and C-terminal beta strands. Many C2 domains are
Ca2+-dependent membrane-targeting modules that bind a
wide variety of substances including bind phospholipids,
inositol polyphosphates, and intracellular proteins.
Most C2 domain proteins are either signal transduction
enzymes that contain a single C2 domain, such as protein
kinase C, or membrane trafficking proteins which contain
at least two C2 domains, such as synaptotagmin 1.
However, there are a few exceptions to this including
RIM isoforms and some splice variants of piccolo/aczonin
and intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. This cd contains the third C2
repeat, C2C, and has a type-II topology.
Length = 151
Score = 28.8 bits (65), Expect = 1.0
Identities = 17/61 (27%), Positives = 28/61 (45%), Gaps = 12/61 (19%)
Query: 88 SKTLANTNDPKWNQ-----SFFYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIELS 142
+ N+ +P+WN+ F P R I+I + D+ R G +D +G I+LS
Sbjct: 50 TSVKKNSYNPEWNEQIVFPEMFPPLCER-------IKIQIRDWDRVGNDDVIGTHFIDLS 102
Query: 143 S 143
Sbjct: 103 K 103
Score = 28.4 bits (64), Expect = 1.4
Identities = 19/66 (28%), Positives = 29/66 (43%), Gaps = 12/66 (18%)
Query: 1 GFKEFAKTLANTNDPKWNQ-----SFFYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEV 55
G K N+ +P+WN+ F P R I+I + D+ R G +D +G
Sbjct: 45 GQKVKTSVKKNSYNPEWNEQIVFPEMFPPLCER-------IKIQIRDWDRVGNDDVIGTH 97
Query: 56 IIELSS 61
I+LS
Sbjct: 98 FIDLSK 103
>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 = 28.0 bits (63), Expect = 1.4
Identities = 15/53 (28%), Positives = 24/53 (45%), Gaps = 3/53 (5%)
Query: 11 NTNDPKWNQSFFYPGIRRSDLKLRS--IEITVWDYTRYGVNDFLGEVIIELSS 61
T P +++SF + + + + TV DY G NDF GE + L+
Sbjct: 64 KTLFPLFDESFEFN-VPPEQCSVEGALLLFTVKDYDLLGSNDFEGEAFLPLND 115
Score = 28.0 bits (63), Expect = 1.4
Identities = 15/53 (28%), Positives = 24/53 (45%), Gaps = 3/53 (5%)
Query: 93 NTNDPKWNQSFFYPGIRRSDLKLRS--IEITVWDYTRYGVNDFLGEVIIELSS 143
T P +++SF + + + + TV DY G NDF GE + L+
Sbjct: 64 KTLFPLFDESFEFN-VPPEQCSVEGALLLFTVKDYDLLGSNDFEGEAFLPLND 115
>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 = 27.9 bits (63), Expect = 1.8
Identities = 18/88 (20%), Positives = 36/88 (40%), Gaps = 15/88 (17%)
Query: 88 SKTLANTNDPKWNQSFFYPGIR----RSDLK----LRSIEITVWDYTRYGVNDFLGEVII 139
++ + T P W+Q+ + + ++ L +E ++D G ++FLG +
Sbjct: 37 TEVIKETLSPTWDQTLIFDEVELYGSPEEIAQNPPLVVVE--LFDQDSVGKDEFLGRSVA 94
Query: 140 --ELSSSLCTDEP---EWFYLTKHKNSG 162
+ L D P +WF + K S
Sbjct: 95 KPLVKLDLEEDFPPKLQWFPIYKGGQSA 122
Score = 26.7 bits (60), Expect = 4.6
Identities = 17/82 (20%), Positives = 34/82 (41%), Gaps = 15/82 (18%)
Query: 7 KTLANTNDPKWNQSFFYPGIR----RSDLK----LRSIEITVWDYTRYGVNDFLGEVII- 57
+ + T P W+Q+ + + ++ L +E ++D G ++FLG +
Sbjct: 38 EVIKETLSPTWDQTLIFDEVELYGSPEEIAQNPPLVVVE--LFDQDSVGKDEFLGRSVAK 95
Query: 58 -ELSSSLCTDEP---EWFYLTK 75
+ L D P +WF + K
Sbjct: 96 PLVKLDLEEDFPPKLQWFPIYK 117
>gnl|CDD|234229 TIGR03490, Mycoplas_LppA, mycoides cluster lipoprotein, LppA/P72
family. Members of this protein family occur in
Mycoplasma mycoides, Mycoplasma hyopneumoniae, and
related Mycoplasmas in small paralogous families that
may also include truncated forms and/or pseudogenes.
Members are predicted lipoproteins with a conserved
signal peptidase II processing and lipid attachment
site. Note that the name for certain characterized
members, p72, reflects an anomalous apparent molecular
weight, given a theoretical MW of about 61 kDa.
Length = 541
Score = 28.6 bits (64), Expect = 2.0
Identities = 12/41 (29%), Positives = 19/41 (46%)
Query: 74 TKHTLELQFPLSNLSKTLANTNDPKWNQSFFYPGIRRSDLK 114
TL L+ +SN + T +P + F + G R+ D K
Sbjct: 332 INGTLGLKVEISNNDENNKITKEPSITKEFSFKGFRKIDFK 372
>gnl|CDD|176040 cd08394, C2A_Munc13, C2 domain first 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 first C2
repeat, C2A, and has a type-II topology.
Length = 127
Score = 27.4 bits (61), Expect = 2.1
Identities = 26/89 (29%), Positives = 37/89 (41%), Gaps = 17/89 (19%)
Query: 88 SKTLA-NTNDPKWNQSFFYPGIRRSDLKLRSIEI----TVWDYTRYGVNDFLGEVIIELS 142
S T+A + P W Q F + I R DL L IE+ +WD +G V I LS
Sbjct: 33 STTIAVRGSQPCWEQDFMFE-INRLDLGL-VIELWNKGLIWD-------TLVGTVWIPLS 83
Query: 143 SSLCTDEP---EWFYLTKHKNSGSNPTID 168
+ ++E EW L N + +
Sbjct: 84 TIRQSNEEGPGEWLTLDSEVNMKNGQIVG 112
Score = 27.0 bits (60), Expect = 3.0
Identities = 19/59 (32%), Positives = 27/59 (45%), Gaps = 13/59 (22%)
Query: 13 NDPKWNQSFFYPGIRRSDLKLRSIEI----TVWDYTRYGVNDFLGEVIIELSSSLCTDE 67
+ P W Q F + I R DL L IE+ +WD +G V I LS+ ++E
Sbjct: 41 SQPCWEQDFMFE-INRLDLGL-VIELWNKGLIWD-------TLVGTVWIPLSTIRQSNE 90
>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 = 27.1 bits (61), Expect = 2.2
Identities = 23/81 (28%), Positives = 34/81 (41%), Gaps = 16/81 (19%)
Query: 88 SKTLANTNDPKWNQSF-FYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIELSSSLC 146
SK TN+P W + F F +R + + + +EI V D LG + + L S L
Sbjct: 36 SKVKERTNNPVWEEGFTFL--VR--NPENQELEIEVKDDKT---GKSLGSLTLPL-SELL 87
Query: 147 TDE----PEWFYLTKHKNSGS 163
+ + F L NSG
Sbjct: 88 KEPDLTLDQPFPL---DNSGP 105
>gnl|CDD|227371 COG5038, COG5038, Ca2+-dependent lipid-binding protein, contains C2
domain [General function prediction only].
Length = 1227
Score = 28.6 bits (64), Expect = 2.3
Identities = 17/56 (30%), Positives = 25/56 (44%), Gaps = 3/56 (5%)
Query: 88 SKTLANTNDPKWNQSFFYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIELSS 143
+K + T +P WN+ F + R + I V D+ ND LG I+LS
Sbjct: 1077 TKVVKKTLNPVWNEEFTIEVLNRV---KDVLTINVNDWDSGEKNDLLGTAEIDLSK 1129
Score = 27.4 bits (61), Expect = 5.4
Identities = 17/55 (30%), Positives = 24/55 (43%), Gaps = 3/55 (5%)
Query: 7 KTLANTNDPKWNQSFFYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIELSS 61
K + T +P WN+ F + R + I V D+ ND LG I+LS
Sbjct: 1078 KVVKKTLNPVWNEEFTIEVLNRV---KDVLTINVNDWDSGEKNDLLGTAEIDLSK 1129
>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 = 27.5 bits (62), Expect = 2.3
Identities = 17/64 (26%), Positives = 32/64 (50%), Gaps = 4/64 (6%)
Query: 88 SKTLANTNDPKWNQSFFYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIELSSSLCT 147
+K +T++P WN++ + I + L + +TV+D+ + +G +LSS L
Sbjct: 41 TKVKKDTSNPVWNETKY---ILVNSLT-EPLNLTVYDFNDKRKDKLIGTAEFDLSSLLQN 96
Query: 148 DEPE 151
E E
Sbjct: 97 PEQE 100
Score = 26.4 bits (59), Expect = 4.5
Identities = 17/63 (26%), Positives = 31/63 (49%), Gaps = 4/63 (6%)
Query: 7 KTLANTNDPKWNQSFFYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIELSSSLCTD 66
K +T++P WN++ + I + L + +TV+D+ + +G +LSS L
Sbjct: 42 KVKKDTSNPVWNETKY---ILVNSLT-EPLNLTVYDFNDKRKDKLIGTAEFDLSSLLQNP 97
Query: 67 EPE 69
E E
Sbjct: 98 EQE 100
>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 = 27.4 bits (61), Expect = 2.4
Identities = 13/55 (23%), Positives = 34/55 (61%), Gaps = 1/55 (1%)
Query: 88 SKTLANTNDPKWNQSFFYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIELS 142
SK T +P++++SF + + +L R++E+ ++D+ ++ ++ +G V + L+
Sbjct: 55 SKIHKKTLNPEFDESFVF-EVPPQELPKRTLEVLLYDFDQFSRDECIGVVELPLA 108
Score = 26.6 bits (59), Expect = 4.4
Identities = 11/49 (22%), Positives = 32/49 (65%), Gaps = 1/49 (2%)
Query: 12 TNDPKWNQSFFYPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIELS 60
T +P++++SF + + +L R++E+ ++D+ ++ ++ +G V + L+
Sbjct: 61 TLNPEFDESFVF-EVPPQELPKRTLEVLLYDFDQFSRDECIGVVELPLA 108
>gnl|CDD|176006 cd04041, C2A_fungal, C2 domain first repeat; fungal group. C2
domains were first identified in Protein Kinase C (PKC).
C2 domains fold into an 8-standed beta-sandwich that can
adopt 2 structural arrangements: Type I and Type II,
distinguished by a circular permutation involving their
N- and C-terminal beta strands. Many C2 domains are
Ca2+-dependent membrane-targeting modules that bind a
wide variety of substances including bind phospholipids,
inositol polyphosphates, and intracellular proteins.
Most C2 domain proteins are either signal transduction
enzymes that contain a single C2 domain, such as protein
kinase C, or membrane trafficking proteins which contain
at least two C2 domains, such as synaptotagmin 1.
However, there are a few exceptions to this including
RIM isoforms and some splice variants of piccolo/aczonin
and intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions.
Length = 111
Score = 26.8 bits (60), Expect = 3.0
Identities = 14/57 (24%), Positives = 28/57 (49%), Gaps = 6/57 (10%)
Query: 88 SKTLANTNDPKWNQSFF---YPGIRRSDLKLRSIEITVWDYTRYGVNDFLGEVIIEL 141
++ + +P W +++F P ++ +L +WD R+ +D LG V I+L
Sbjct: 41 TRIIRKDLNPVWEETWFVLVTPDEVKAGERLS---CRLWDSDRFTADDRLGRVEIDL 94
Score = 26.8 bits (60), Expect = 3.4
Identities = 19/68 (27%), Positives = 32/68 (47%), Gaps = 12/68 (17%)
Query: 1 GFKEFAKTLANTN------DPKWNQSFF---YPGIRRSDLKLRSIEITVWDYTRYGVNDF 51
F +F K L +T +P W +++F P ++ +L +WD R+ +D
Sbjct: 30 SFAKFGKPLYSTRIIRKDLNPVWEETWFVLVTPDEVKAGERLS---CRLWDSDRFTADDR 86
Query: 52 LGEVIIEL 59
LG V I+L
Sbjct: 87 LGRVEIDL 94
>gnl|CDD|176012 cd04047, C2B_Copine, C2 domain second repeat in Copine. There
are 2 copies of the C2 domain present in copine, a
protein involved in membrane trafficking,
protein-protein interactions, and perhaps even cell
division and growth. C2 domains fold into an 8-standed
beta-sandwich that can adopt 2 structural arrangements:
Type I and Type II, distinguished by a circular
permutation involving their N- and C-terminal beta
strands. Many C2 domains are Ca2+-dependent
membrane-targeting modules that bind a wide variety of
substances including bind phospholipids, inositol
polyphosphates, and intracellular proteins. Most C2
domain proteins are either signal transduction enzymes
that contain a single C2 domain, such as protein kinase
C, or membrane trafficking proteins which contain at
least two C2 domains, such as synaptotagmin 1.
However, there are a few exceptions to this including
RIM isoforms and some splice variants of
piccolo/aczonin and intersectin which only have a
single C2 domain. C2 domains with a calcium binding
region have negatively charged residues, primarily
aspartates, that serve as ligands for calcium ions.
This cd contains the second C2 repeat, C2B, and has a
type-I topology.
Length = 110
Score = 26.8 bits (60), Expect = 3.0
Identities = 10/22 (45%), Positives = 14/22 (63%)
Query: 34 RSIEITVWDYTRYGVNDFLGEV 55
R I+I V+DY G +D +GE
Sbjct: 70 RPIKIEVYDYDSSGKHDLIGEF 91
Score = 26.8 bits (60), Expect = 3.0
Identities = 10/22 (45%), Positives = 14/22 (63%)
Query: 116 RSIEITVWDYTRYGVNDFLGEV 137
R I+I V+DY G +D +GE
Sbjct: 70 RPIKIEVYDYDSSGKHDLIGEF 91
>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 = 26.1 bits (58), Expect = 8.7
Identities = 10/29 (34%), Positives = 17/29 (58%)
Query: 83 PLSNLSKTLANTNDPKWNQSFFYPGIRRS 111
P S + T+ +TN P++N+SF R+
Sbjct: 40 PQSGKTSTIKDTNSPEYNESFKLNINRKH 68
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
0.318 0.136 0.426
Gapped
Lambda K H
0.267 0.0645 0.140
Matrix: BLOSUM62
Gap Penalties: Existence: 11, Extension: 1
Number of Sequences: 44354
Number of Hits to DB: 8,819,457
Number of extensions: 784082
Number of successful extensions: 700
Number of sequences better than 10.0: 1
Number of HSP's gapped: 659
Number of HSP's successfully gapped: 133
Length of query: 174
Length of database: 10,937,602
Length adjustment: 90
Effective length of query: 84
Effective length of database: 6,945,742
Effective search space: 583442328
Effective search space used: 583442328
Neighboring words threshold: 11
Window for multiple hits: 40
X1: 16 ( 7.3 bits)
X2: 38 (14.6 bits)
X3: 64 (24.7 bits)
S1: 41 (21.7 bits)
S2: 56 (25.5 bits)