RPS-BLAST 2.2.26 [Sep-21-2011]
Database: CDD.v3.10
44,354 sequences; 10,937,602 total letters
Searching..................................................done
Query= psy17645
(207 letters)
>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 = 220 bits (562), Expect = 1e-74
Identities = 87/130 (66%), Positives = 102/130 (78%), Gaps = 13/130 (10%)
Query: 32 TLEYDFNANSLSVTVIQAEDLPALDMGGTSDPYVKVYLLPDKKKKFETKVHRKTLNPVFN 91
+L+YDF +N L+V +IQA DLPA+DMGGTSDPYVKVYLLPDKKKKFETKVHRKTLNPVFN
Sbjct: 8 SLDYDFQSNQLTVGIIQAADLPAMDMGGTSDPYVKVYLLPDKKKKFETKVHRKTLNPVFN 67
Query: 92 ETFVFKVSFLNRSEVFEQGVPYADAMNKTLVFAIFDFDRFSKHDQIGEVKVALCQIDLAQ 151
ETF FK VPY++ NKTLVF+++DFDRFSKHD IGEV+V L +DL
Sbjct: 68 ETFTFK-------------VPYSELGNKTLVFSVYDFDRFSKHDLIGEVRVPLLTVDLGH 114
Query: 152 TIEEWRELQS 161
EEWR+L+S
Sbjct: 115 VTEEWRDLES 124
>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 = 151 bits (383), Expect = 3e-47
Identities = 57/133 (42%), Positives = 86/133 (64%), Gaps = 12/133 (9%)
Query: 28 KPEQTLEYDFNANSLSVTVIQAEDLPALDMGGTSDPYVKVYLLPDKKKKFETKVHRKTLN 87
+ + ++ YDF ++L++ +++A +LPA D GTSDP+VK+YLLPDKK K ETKV RK LN
Sbjct: 4 RIQFSVSYDFQESTLTLKILKAVELPAKDFSGTSDPFVKIYLLPDKKHKLETKVKRKNLN 63
Query: 88 PVFNETFVFKVSFLNRSEVFEQGVPYADAMNKTLVFAIFDFDRFSKHDQIGEVKVALCQI 147
P +NETF+F +G PY + L + D+DRFS++D IGEV + L ++
Sbjct: 64 PHWNETFLF------------EGFPYEKLQQRVLYLQVLDYDRFSRNDPIGEVSLPLNKV 111
Query: 148 DLAQTIEEWRELQ 160
DL + W++L+
Sbjct: 112 DLTEEQTFWKDLK 124
>gnl|CDD|176036 cd08390, C2A_Synaptotagmin-15-17, C2A domain first repeat present
in Synaptotagmins 15 and 17. Synaptotagmin is a
membrane-trafficking protein characterized by a
N-terminal transmembrane region, a linker, and 2
C-terminal C2 domains. It is thought to be involved in
the trafficking and exocytosis of secretory vesicles in
non-neuronal tissues and is Ca2+ independent. Human
synaptotagmin 15 has 2 alternatively spliced forms that
encode proteins with different C-termini. The larger,
SYT15a, contains a N-terminal TM region, a putative
fatty-acylation site, and 2 tandem C terminal C2
domains. The smaller, SYT15b, lacks the C-terminal
portion of the second C2 domain. Unlike most other
synaptotagmins it is nearly absent in the brain and
rather is found in the heart, lungs, skeletal muscle,
and testis. Synaptotagmin 17 is located in the brain,
kidney, and prostate and is thought to be a peripheral
membrane protein. Previously all synaptotagmins were
thought to be calcium sensors in the regulation of
neurotransmitter release and hormone secretion, but it
has been shown that not all of them bind calcium. Of
the 17 identified synaptotagmins only 8 bind calcium
(1-3, 5-7, 9, 10). The function of the two C2 domains
that bind calcium are: regulating the fusion step of
synaptic vesicle exocytosis (C2A) and binding to
phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the
absence of calcium ions and to phosphatidylinositol
bisphosphate (PIP2) in their presence (C2B). C2B also
regulates also the recycling step of synaptic vesicles.
C2 domains fold into an 8-standed beta-sandwich that can
adopt 2 structural arrangements: Type I and Type II,
distinguished by a circular permutation involving their
N- and C-terminal beta strands. Many C2 domains are
Ca2+-dependent membrane-targeting modules that bind a
wide variety of substances including bind phospholipids,
inositol polyphosphates, and intracellular proteins.
Most C2 domain proteins are either signal transduction
enzymes that contain a single C2 domain, such as protein
kinase C, or membrane trafficking proteins which contain
at least two C2 domains, such as synaptotagmin 1.
However, there are a few exceptions to this including
RIM isoforms and some splice variants of piccolo/aczonin
and intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. This cd contains the first C2
repeat, C2A, and has a type-I topology.
Length = 123
Score = 120 bits (304), Expect = 2e-35
Identities = 50/130 (38%), Positives = 76/130 (58%), Gaps = 14/130 (10%)
Query: 32 TLEYDFNANSLSVTVIQAEDLPALDMG-GTSDPYVKVYLLPDKKKKFETKVHRKTLNPVF 90
+++YD L+V++I+A +LP DP+VKV LLPD+++ ++KV RKT NP F
Sbjct: 6 SVQYDLEEEQLTVSLIKARNLPPRTKDVAHCDPFVKVCLLPDERRSLQSKVKRKTQNPNF 65
Query: 91 NETFVFKVSFLNRSEVFEQGVPYADAMNKTLVFAIFDFDRFSKHDQIGEVKVALCQIDLA 150
+ETFVF+VSF + +TL +++D DRFS+H IG V L +DL
Sbjct: 66 DETFVFQVSFK-------------ELQRRTLRLSVYDVDRFSRHCIIGHVLFPLKDLDLV 112
Query: 151 QTIEEWRELQ 160
+ WR+L+
Sbjct: 113 KGGVVWRDLE 122
>gnl|CDD|176033 cd08387, C2A_Synaptotagmin-8, C2A domain first repeat present in
Synaptotagmin 8. Synaptotagmin is a
membrane-trafficking protein characterized by a
N-terminal transmembrane region, a linker, and 2
C-terminal C2 domains. Previously all synaptotagmins
were thought to be calcium sensors in the regulation of
neurotransmitter release and hormone secretion, but it
has been shown that not all of them bind calcium. Of
the 17 identified synaptotagmins only 8 bind calcium
(1-3, 5-7, 9, 10). The function of the two C2 domains
that bind calcium are: regulating the fusion step of
synaptic vesicle exocytosis (C2A) and binding to
phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the
absence of calcium ions and to phosphatidylinositol
bisphosphate (PIP2) in their presence (C2B). C2B also
regulates also the recycling step of synaptic vesicles.
C2 domains fold into an 8-standed beta-sandwich that can
adopt 2 structural arrangements: Type I and Type II,
distinguished by a circular permutation involving their
N- and C-terminal beta strands. Many C2 domains are
Ca2+-dependent membrane-targeting modules that bind a
wide variety of substances including bind phospholipids,
inositol polyphosphates, and intracellular proteins.
Most C2 domain proteins are either signal transduction
enzymes that contain a single C2 domain, such as protein
kinase C, or membrane trafficking proteins which contain
at least two C2 domains, such as synaptotagmin 1.
However, there are a few exceptions to this including
RIM isoforms and some splice variants of piccolo/aczonin
and intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. This cd contains the first C2
repeat, C2A, and has a type-I topology.
Length = 124
Score = 120 bits (303), Expect = 3e-35
Identities = 53/130 (40%), Positives = 83/130 (63%), Gaps = 13/130 (10%)
Query: 32 TLEYDFNANSLSVTVIQAEDLPALDMGGTSDPYVKVYLLPDKKKKFETKVHRKTLNPVFN 91
+LEYD + L+V +IQA +L D GT+DPY KV LLPD+ ++K+H+KTLNP F+
Sbjct: 8 SLEYDKDMGILNVKLIQARNLQPRDFSGTADPYCKVRLLPDRSNTKQSKIHKKTLNPEFD 67
Query: 92 ETFVFKVSFLNRSEVFEQGVPYADAMNKTLVFAIFDFDRFSKHDQIGEVKVALCQIDLAQ 151
E+FVF VP + +TL ++DFD+FS+ + IG V++ L ++DL++
Sbjct: 68 ESFVF-------------EVPPQELPKRTLEVLLYDFDQFSRDECIGVVELPLAEVDLSE 114
Query: 152 TIEEWRELQS 161
++ WR++QS
Sbjct: 115 KLDLWRKIQS 124
>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 = 115 bits (290), Expect = 3e-33
Identities = 56/133 (42%), Positives = 77/133 (57%), Gaps = 15/133 (11%)
Query: 32 TLEYDFNANSLSVTVIQAEDLPALD-MGGTSDPYVKVYLLPDKKKKFETKVHRKTLNPVF 90
+L Y+ +L V +I+ DLPA+D GTSDPYVK+ LLP+K+ K +T+V RKT NPV+
Sbjct: 8 SLRYNSEKKALLVNIIECRDLPAMDEQSGTSDPYVKLQLLPEKEHKVKTRVLRKTRNPVY 67
Query: 91 NETFVFKVSFLNRSEVFEQGVPYADAMNKTLVFAIFDFDRFSKHDQIGEVKVALCQIDLA 150
+ETF F G+PY + +L FA+ FDR+S+ D IGEV L DL
Sbjct: 68 DETFTF------------YGIPYNQLQDLSLHFAVLSFDRYSRDDVIGEVVCPLAGADLL 115
Query: 151 Q--TIEEWRELQS 161
+ RE+Q
Sbjct: 116 NEGELLVSREIQP 128
>gnl|CDD|215765 pfam00168, C2, C2 domain.
Length = 85
Score = 106 bits (267), Expect = 3e-30
Identities = 46/100 (46%), Positives = 58/100 (58%), Gaps = 15/100 (15%)
Query: 42 LSVTVIQAEDLPALDMGGTSDPYVKVYLLPDKKKKFETKVHRKTLNPVFNETFVFKVSFL 101
L VTVI A++LP D+ G SDPYVKV L KK +TKV + TLNPV+NETF F+V+
Sbjct: 1 LRVTVISAKNLPPKDLNGKSDPYVKVSLGGQKKDTKKTKVVKNTLNPVWNETFTFEVTLP 60
Query: 102 NRSEVFEQGVPYADAMNKTLVFAIFDFDRFSKHDQIGEVK 141
+E L ++D+DRF K D IGEV
Sbjct: 61 ELAE---------------LRIEVYDYDRFGKDDFIGEVT 85
>gnl|CDD|175973 cd00030, C2, C2 domain. The C2 domain was first identified in PKC.
C2 domains fold into an 8-standed beta-sandwich that can
adopt 2 structural arrangements: Type I and Type II,
distinguished by a circular permutation involving their
N- and C-terminal beta strands. Many C2 domains are
Ca2+-dependent membrane-targeting modules that bind a
wide variety of substances including bind phospholipids,
inositol polyphosphates, and intracellular proteins.
Most C2 domain proteins are either signal transduction
enzymes that contain a single C2 domain, such as protein
kinase C, or membrane trafficking proteins which contain
at least two C2 domains, such as synaptotagmin 1.
However, there are a few exceptions to this including
RIM isoforms and some splice variants of piccolo/aczonin
and intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions.
Length = 102
Score = 106 bits (266), Expect = 4e-30
Identities = 54/119 (45%), Positives = 70/119 (58%), Gaps = 18/119 (15%)
Query: 42 LSVTVIQAEDLPALDMGGTSDPYVKVYLLPDKKKKFETKVHRKTLNPVFNETFVFKVSFL 101
L VTVI+A +LPA D+ G SDPYVKV L K+KF+TKV + TLNPV+NETF F V
Sbjct: 1 LRVTVIEARNLPAKDLNGKSDPYVKVSL--GGKQKFKTKVVKNTLNPVWNETFEFPVL-- 56
Query: 102 NRSEVFEQGVPYADAMNKTLVFAIFDFDRFSKHDQIGEVKVALCQI-DLAQTIEEWREL 159
D + TL ++D DRFSK D +GEV++ L ++ D + E W L
Sbjct: 57 -------------DPESDTLTVEVWDKDRFSKDDFLGEVEIPLSELLDSGKEGELWLPL 102
>gnl|CDD|214577 smart00239, C2, Protein kinase C conserved region 2 (CalB).
Ca2+-binding motif present in phospholipases, protein
kinases C, and synaptotagmins (among others). Some do
not appear to contain Ca2+-binding sites. Particular C2s
appear to bind phospholipids, inositol polyphosphates,
and intracellular proteins. Unusual occurrence in
perforin. Synaptotagmin and PLC C2s are permuted in
sequence with respect to N- and C-terminal beta strands.
SMART detects C2 domains using one or both of two
profiles.
Length = 101
Score = 106 bits (266), Expect = 5e-30
Identities = 47/116 (40%), Positives = 64/116 (55%), Gaps = 15/116 (12%)
Query: 41 SLSVTVIQAEDLPALDMGGTSDPYVKVYLLPDKKKKFETKVHRKTLNPVFNETFVFKVSF 100
+L+V +I A +LP D GG SDPYVKV L D K+K +TKV + TLNPV+NETF F+V
Sbjct: 1 TLTVKIISARNLPPKDKGGKSDPYVKVSLDGDPKEKKKTKVVKNTLNPVWNETFEFEVPP 60
Query: 101 LNRSEVFEQGVPYADAMNKTLVFAIFDFDRFSKHDQIGEVKVALCQIDLAQTIEEW 156
+E L ++D DRF + D IG+V + L + L E+
Sbjct: 61 PELAE---------------LEIEVYDKDRFGRDDFIGQVTIPLSDLLLGGRHEKL 101
>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 = 98.9 bits (247), Expect = 1e-26
Identities = 44/133 (33%), Positives = 65/133 (48%), Gaps = 17/133 (12%)
Query: 32 TLEYDFNANSLSVTVIQAEDLPALDMGGTSDPYVKVYLLPDKKK--KFETKVHRKTLNPV 89
T+ Y L VTV + +LP D DPYV++YLLPDK K + +T V + LNPV
Sbjct: 8 TIRYSSQRQKLIVTVHKCRNLPPCDSSDIPDPYVRLYLLPDKSKSTRRKTSVKKDNLNPV 67
Query: 90 FNETFVFKVSFLNRSEVFEQGVPYADAMNKTLVFAI-FDFDRFSKH-DQIGEVKVALCQI 147
F+ETF F VS + +TL A+ S+ +G+V + L +
Sbjct: 68 FDETFEFPVS-------------LEELKRRTLDVAVKNSKSFLSREKKLLGQVLIDLSDL 114
Query: 148 DLAQTIEEWRELQ 160
DL++ +W +L
Sbjct: 115 DLSKGFTQWYDLT 127
>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 = 98.8 bits (247), Expect = 1e-26
Identities = 45/110 (40%), Positives = 57/110 (51%), Gaps = 15/110 (13%)
Query: 33 LEYDFNANSLSVTVIQAEDLPALDMGGTSDPYVKVYLLPDKK--KKFETKVHRKTLNPVF 90
L Y A L+V V++A +LP D G SDPYVKV LL K KK +T V + TLNPVF
Sbjct: 7 LSYLPTAERLTVVVLKARNLPPSDGKGLSDPYVKVSLLQGGKKLKKKKTSVKKGTLNPVF 66
Query: 91 NETFVFKVSFLNRSEVFEQGVPYADAMNKTLVFAIFDFDRFSKHDQIGEV 140
NE F F V EV +LV + D D +++ IG+V
Sbjct: 67 NEAFSFDVPAEQLEEV-------------SLVITVVDKDSVGRNEVIGQV 103
>gnl|CDD|176000 cd04035, C2A_Rabphilin_Doc2, C2 domain first repeat present in
Rabphilin and Double C2 domain. Rabphilin is found
neurons and in neuroendrocrine cells, while Doc2 is
found not only in the brain but in tissues, including
mast cells, chromaffin cells, and osteoblasts.
Rabphilin and Doc2s share highly homologous tandem C2
domains, although their N-terminal structures are
completely different: rabphilin contains an N-terminal
Rab-binding domain (RBD),7 whereas Doc2 contains an
N-terminal Munc13-1-interacting domain (MID). C2 domains
fold into an 8-standed beta-sandwich that can adopt 2
structural arrangements: Type I and Type II,
distinguished by a circular permutation involving their
N- and C-terminal beta strands. Many C2 domains are
Ca2+-dependent membrane-targeting modules that bind a
wide variety of substances including bind phospholipids,
inositol polyphosphates, and intracellular proteins.
Most C2 domain proteins are either signal transduction
enzymes that contain a single C2 domain, such as protein
kinase C, or membrane trafficking proteins which contain
at least two C2 domains, such as synaptotagmin 1.
However, there are a few exceptions to this including
RIM isoforms and some splice variants of piccolo/aczonin
and intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. This cd contains the first C2
repeat, C2A, and has a type-I topology.
Length = 123
Score = 97.4 bits (243), Expect = 3e-26
Identities = 49/125 (39%), Positives = 65/125 (52%), Gaps = 15/125 (12%)
Query: 30 EQTLEYDFNANSLSVTVIQAEDLPALDMGGTSDPYVKVYLLP--DKKKKFETKVHRKTLN 87
E TL YD ++L T+I+A+ L A+D G SDPYVK+ LLP K K TK KT N
Sbjct: 5 EFTLLYDPANSALHCTIIRAKGLKAMDANGLSDPYVKLNLLPGASKATKLRTKTVHKTRN 64
Query: 88 PVFNETFVFKVSFLNRSEVFEQGVPYADAMNKTLVFAIFDFDRFSKHDQIGEVKVALCQI 147
P FNET + G+ D KTL + D DRF +D +GE ++ L ++
Sbjct: 65 PEFNETLTY------------YGITEEDIQRKTLRLLVLDEDRFG-NDFLGETRIPLKKL 111
Query: 148 DLAQT 152
QT
Sbjct: 112 KPNQT 116
>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 = 96.9 bits (242), Expect = 5e-26
Identities = 51/134 (38%), Positives = 68/134 (50%), Gaps = 23/134 (17%)
Query: 33 LEYDFNANSLSVTVIQAEDLPALDMGGTSDPYVKVYLLPDKKKKF--ETKVHRKTLNPVF 90
L YD + L VTV+QA DLP D G +PYVKVYLLPD+ +K TK +KTLNP +
Sbjct: 9 LWYDKVTSQLIVTVLQARDLPPRDDGSLRNPYVKVYLLPDRSEKSKRRTKTVKKTLNPEW 68
Query: 91 NETFVFKVSFLNRSEVFEQGVPYADAMNKTLVFAIFDFDRFSKHDQIGEVKVALCQIDLA 150
N+TF + V +TL ++D+DR ++D +GE IDLA
Sbjct: 69 NQTFEYS------------NVRRETLKERTLEVTVWDYDRDGENDFLGE-----VVIDLA 111
Query: 151 QTI----EEWRELQ 160
+ W LQ
Sbjct: 112 DALLDDEPHWYPLQ 125
>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 = 94.6 bits (236), Expect = 3e-25
Identities = 46/128 (35%), Positives = 69/128 (53%), Gaps = 16/128 (12%)
Query: 32 TLEYDFNANSLSVTVIQAEDLPALDMG-GTSDPYVKVYLLPDKKK--KFETKVHRKTLNP 88
+L Y++ SL V + + +L D S+PYVKVYLLPDK K K +T V + T NP
Sbjct: 6 SLSYNYKTGSLEVHIKECRNLAYADEKKKRSNPYVKVYLLPDKSKQSKRKTSVKKNTTNP 65
Query: 89 VFNETFVFKVSFLNRSEVFEQGVPYADAMNKTLVFAIFDFDRFSKHDQIGEVKVALCQID 148
VFNET + +S +S++ +TL +++ DRF ++ +GEV++ L D
Sbjct: 66 VFNETLKYHIS---KSQL----------ETRTLQLSVWHHDRFGRNTFLGEVEIPLDSWD 112
Query: 149 LAQTIEEW 156
L EW
Sbjct: 113 LDSQQSEW 120
>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 = 91.5 bits (228), Expect = 5e-24
Identities = 45/131 (34%), Positives = 65/131 (49%), Gaps = 17/131 (12%)
Query: 42 LSVTVIQAEDLPALDMGGTSDPYVKVYLLPDKKKKFETKVHRKTLNPVFNETFVFKVSFL 101
L+V VI AE+LP+ D G SDP+VK YL + +K F+TK +KTLNPV+NE+F V
Sbjct: 1 LTVDVISAENLPSADRNGKSDPFVKFYL--NGEKVFKTKTIKKTLNPVWNESFEVPV--P 56
Query: 102 NRSEVFEQGVPYADAMNKTLVFAIFDFDRFSKHDQIGEVKVALCQIDLAQTIEEWRELQS 161
+R L ++D+DR K D +G + L ++ +T E L
Sbjct: 57 SRV-------------RAVLKVEVYDWDRGGKDDLLGSAYIDLSDLEPEETTELTLPLDG 103
Query: 162 VEGEGGQVYYL 172
G +L
Sbjct: 104 QGGGKLGAVFL 114
>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 = 91.3 bits (227), Expect = 1e-23
Identities = 43/114 (37%), Positives = 70/114 (61%), Gaps = 17/114 (14%)
Query: 32 TLEYDFNANSLSVTVIQAEDLPALDMGGTSDPYVKVYLLPDKK--KKFETKVHRKTLNPV 89
+L Y A L+V +++A++L +D+GG SDPYVK++L+ + K KK +T + ++TLNP
Sbjct: 7 SLRYVPTAGKLTVVILEAKNLKKMDVGGLSDPYVKIHLMQNGKRLKKKKTTIKKRTLNPY 66
Query: 90 FNETFVFKVSFLNRSEVFEQGVPYADAMNKT-LVFAIFDFDRFSKHDQIGEVKV 142
+NE+F F+V FEQ + K L+ + D+DR K+D IG+V +
Sbjct: 67 YNESFSFEVP-------FEQ-------IQKVHLIVTVLDYDRIGKNDPIGKVVL 106
>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 = 90.8 bits (226), Expect = 2e-23
Identities = 40/118 (33%), Positives = 58/118 (49%), Gaps = 15/118 (12%)
Query: 34 EYDFNANSLSVTVIQAEDLPALDMGGTSDPYVKVYLLPDKK----KKFETKVHRKTLNPV 89
Y + SL V ++ A +L LD G+SDP+VKV LLP +T+V +KTL P+
Sbjct: 10 YYRASEQSLRVEILNARNLLPLDSNGSSDPFVKVELLPRHLFPDVPTPKTQVKKKTLFPL 69
Query: 90 FNETFVFKVSFLNRSEVFEQGVPYADAMNKTLVFAIFDFDRFSKHDQIGEVKVALCQI 147
F+E+F F V S A+ L+F + D+D +D GE + L I
Sbjct: 70 FDESFEFNVPPEQCSV--------EGAL---LLFTVKDYDLLGSNDFEGEAFLPLNDI 116
>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 = 90.6 bits (225), Expect = 2e-23
Identities = 44/111 (39%), Positives = 70/111 (63%), Gaps = 15/111 (13%)
Query: 32 TLEYDFNANSLSVTVIQAEDLPALDMGGTSDPYVKVYLL-PDKK-KKFETKVHRKTLNPV 89
+L Y+ AN ++V +I+A +L A+D+ GTSDPYVKV+L+ DK+ +K +T + ++TLNPV
Sbjct: 7 SLCYNPTANRITVNIIKARNLKAMDINGTSDPYVKVWLMYKDKRVEKKKTVIKKRTLNPV 66
Query: 90 FNETFVFKVSFLNRSEVFEQGVPYADAMNKTLVFAIFDFDRFSKHDQIGEV 140
FNE+F+F +P TL+ + D DR S++D IG++
Sbjct: 67 FNESFIFN-------------IPLERLRETTLIITVMDKDRLSRNDLIGKI 104
>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 = 90.4 bits (225), Expect = 2e-23
Identities = 43/136 (31%), Positives = 73/136 (53%), Gaps = 18/136 (13%)
Query: 33 LEYDFNANSLSVTVIQAEDLPALDMGGTSDPYVKVYLLPD--KKKKFETKVHRKTLNPVF 90
L+ N L+V V +A++L +D G SDPYVK+ L+PD + K +TK +KTLNPV+
Sbjct: 6 LKISVKDNKLTVEVREAKNLIPMDPNGLSDPYVKLKLIPDPKNETKQKTKTIKKTLNPVW 65
Query: 91 NETFVFKVSFLNRSEVFEQGVPYADAMNKTLVFAIFDFDRFSKHDQIGEVKVALCQIDLA 150
NETF F + ++ L ++D+DR +++D +G + + ++ +
Sbjct: 66 NETFTFDLK--------------PADKDRRLSIEVWDWDRTTRNDFMGSLSFGVSEL-IK 110
Query: 151 QTIEEW-RELQSVEGE 165
++ W + L EGE
Sbjct: 111 MPVDGWYKLLNQEEGE 126
>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 = 89.8 bits (223), Expect = 3e-23
Identities = 53/131 (40%), Positives = 68/131 (51%), Gaps = 16/131 (12%)
Query: 33 LEYDFNANSLSVTVIQAEDLPALDM-GGTSDPYVKVYLLPDKKK--KFETKVHRKTLNPV 89
L+YD L V VIQ +DL A D SDPYVK YLLPDK K +T V +KTLNPV
Sbjct: 8 LDYDPKLRELHVHVIQCQDLAAADPKKQRSDPYVKTYLLPDKSNRGKRKTSVKKKTLNPV 67
Query: 90 FNETFVFKVSFLNRSEVFEQGVPYADAMNKTLVFAIFDFDRFSKHDQIGEVKVALCQIDL 149
FNET +KV R E+ + L +++ D ++ +GEV+V L D
Sbjct: 68 FNETLRYKV---EREELPTR----------VLNLSVWHRDSLGRNSFLGEVEVDLGSWDW 114
Query: 150 AQTIEEWRELQ 160
+ T W LQ
Sbjct: 115 SNTQPTWYPLQ 125
>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 = 89.7 bits (223), Expect = 9e-23
Identities = 46/124 (37%), Positives = 65/124 (52%), Gaps = 14/124 (11%)
Query: 42 LSVTVIQAEDLPALDMGGTSDPYVKVYLLPDKKK--KFETKVHRKTLNPVFNETFVFKVS 99
L V V +A++LPAL GGTSD +VK YLLPDK K K +T V +K++NPV+N TFV+
Sbjct: 29 LHVWVKEAKNLPALKSGGTSDSFVKCYLLPDKSKKSKQKTPVVKKSVNPVWNHTFVYD-- 86
Query: 100 FLNRSEVFEQGVPYADAMNKTLVFAIFDFDRFSKHDQIGEVKVALCQIDLAQTIEEWREL 159
GV D L ++D D+ S +D +G V++ L +W +
Sbjct: 87 ----------GVSPEDLSQACLELTVWDHDKLSSNDFLGGVRLGLGTGKSYGQAVDWMDS 136
Query: 160 QSVE 163
E
Sbjct: 137 TGEE 140
>gnl|CDD|176049 cd08404, C2B_Synaptotagmin-4, C2 domain second repeat present in
Synaptotagmin 4. Synaptotagmin is a
membrane-trafficking protein characterized by a
N-terminal transmembrane region, a linker, and 2
C-terminal C2 domains. Synaptotagmin 4, a member of
class 4 synaptotagmins, is located in the brain. It
functions are unknown. It, like synaptotagmin-11, has an
Asp to Ser substitution in its C2A domain. Previously
all synaptotagmins were thought to be calcium sensors in
the regulation of neurotransmitter release and hormone
secretion, but it has been shown that not all of them
bind calcium. Of the 17 identified synaptotagmins only
8 bind calcium (1-3, 5-7, 9, 10). The function of the
two C2 domains that bind calcium are: regulating the
fusion step of synaptic vesicle exocytosis (C2A) and
binding to phosphatidyl-inositol-3,4,5-triphosphate
(PIP3) in the absence of calcium ions and to
phosphatidylinositol bisphosphate (PIP2) in their
presence (C2B). C2B also regulates also the recycling
step of synaptic vesicles. C2 domains fold into an
8-standed beta-sandwich that can adopt 2 structural
arrangements: Type I and Type II, distinguished by a
circular permutation involving their N- and C-terminal
beta strands. Many C2 domains are Ca2+-dependent
membrane-targeting modules that bind a wide variety of
substances including bind phospholipids, inositol
polyphosphates, and intracellular proteins. Most C2
domain proteins are either signal transduction enzymes
that contain a single C2 domain, such as protein kinase
C, or membrane trafficking proteins which contain at
least two C2 domains, such as synaptotagmin 1. However,
there are a few exceptions to this including RIM
isoforms and some splice variants of piccolo/aczonin and
intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. This cd contains the second C2
repeat, C2B, and has a type-I topology.
Length = 136
Score = 85.6 bits (212), Expect = 1e-21
Identities = 45/130 (34%), Positives = 69/130 (53%), Gaps = 17/130 (13%)
Query: 32 TLEYDFNANSLSVTVIQAEDLPALDMGGTSDPYVKVYLLPDKKK--KFETKVHRKTLNPV 89
+L Y N L+V V++A LP +D+ G +DPYVKV L KK+ K +T V + TLNPV
Sbjct: 7 SLCYQPTTNRLTVVVLKARHLPKMDVSGLADPYVKVNLYYGKKRISKKKTHVKKCTLNPV 66
Query: 90 FNETFVFKVSFLNRSEVFEQGVPYADAMNKTLVFAIFDFDRFSKHDQIGEVKVALCQIDL 149
FNE+FVF +P + + ++ F + D DR +K++ IG ++ L
Sbjct: 67 FNESFVFD-------------IPSEELEDISVEFLVLDSDRVTKNEVIG--RLVLGPKAS 111
Query: 150 AQTIEEWREL 159
W+E+
Sbjct: 112 GSGGHHWKEV 121
>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 = 84.7 bits (210), Expect = 3e-21
Identities = 41/110 (37%), Positives = 59/110 (53%), Gaps = 15/110 (13%)
Query: 33 LEYDFNANSLSVTVIQAEDLPALDMGGTSDPYVKVYLLPD--KKKKFETKVHRKTLNPVF 90
L Y+ L V +I+ +L A+D G SDP+VK+YL PD KK K +T+V +KTLNP F
Sbjct: 6 LMYNTQRRGLIVGIIRCVNLAAMDANGYSDPFVKLYLKPDAGKKSKHKTQVKKKTLNPEF 65
Query: 91 NETFVFKVSFLNRSEVFEQGVPYADAMNKTLVFAIFDFDRFSKHDQIGEV 140
NE F + + ++D KTL ++D D +D IG +
Sbjct: 66 NEEFFYD-------------IKHSDLAKKTLEITVWDKDIGKSNDYIGGL 102
>gnl|CDD|176035 cd08389, C2A_Synaptotagmin-14_16, C2A domain first repeat present
in Synaptotagmins 14 and 16. Synaptotagmin 14 and 16
are membrane-trafficking proteins in specific tissues
outside the brain. Both of these contain C-terminal
tandem C2 repeats, but only Synaptotagmin 14 has an
N-terminal transmembrane domain and a putative
fatty-acylation site. Previously all synaptotagmins were
thought to be calcium sensors in the regulation of
neurotransmitter release and hormone secretion, but it
has been shown that not all of them bind calcium and
this is indeed the case here. Of the 17 identified
synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10).
The function of the two C2 domains that bind calcium
are: regulating the fusion step of synaptic vesicle
exocytosis (C2A) and binding to
phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the
absence of calcium ions and to phosphatidylinositol
bisphosphate (PIP2) in their presence (C2B). C2B also
regulates also the recycling step of synaptic vesicles.
C2 domains fold into an 8-standed beta-sandwich that can
adopt 2 structural arrangements: Type I and Type II,
distinguished by a circular permutation involving their
N- and C-terminal beta strands. Many C2 domains are
Ca2+-dependent membrane-targeting modules that bind a
wide variety of substances including bind phospholipids,
inositol polyphosphates, and intracellular proteins.
Most C2 domain proteins are either signal transduction
enzymes that contain a single C2 domain, such as protein
kinase C, or membrane trafficking proteins which contain
at least two C2 domains, such as synaptotagmin 1.
However, there are a few exceptions to this including
RIM isoforms and some splice variants of piccolo/aczonin
and intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. This cd contains the first C2
repeat, C2A, and has a type-I topology.
Length = 124
Score = 84.2 bits (209), Expect = 4e-21
Identities = 51/129 (39%), Positives = 68/129 (52%), Gaps = 13/129 (10%)
Query: 32 TLEYDFNANSLSVTVIQAEDLPALDMGGTSDPYVKVYLLPDKKKKFETKVHRKTLNPVFN 91
EYD +A L+VTVI+A+D+P D GG S V + LLP KK++ +TKV R NPVFN
Sbjct: 8 AFEYDPSARKLTVTVIRAQDIPTKDRGGASSWQVHLVLLPSKKQRAKTKVQRGP-NPVFN 66
Query: 92 ETFVFKVSFLNRSEVFEQGVPYADAMNKTLVFAIFDFDRFSKHDQIGEVKVALCQIDLAQ 151
ETF F S V + + N L F ++ +R K IGE V L Q++L
Sbjct: 67 ETFTF-------SRVEPEELN-----NMALRFRLYGVERMRKERLIGEKVVPLSQLNLEG 114
Query: 152 TIEEWRELQ 160
W L+
Sbjct: 115 ETTVWLTLE 123
>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 = 80.6 bits (199), Expect = 9e-20
Identities = 44/132 (33%), Positives = 69/132 (52%), Gaps = 16/132 (12%)
Query: 32 TLEYDFNANSLSVTVIQAEDLPALDMGGT-SDPYVKVYLLPDK--KKKFETKVHRKTLNP 88
+L YD+ SL+V V + +L D S+PYVK YLLPDK + K +T + R T NP
Sbjct: 7 SLSYDYKTQSLNVHVKECRNLAYGDEAKKRSNPYVKTYLLPDKSRQSKRKTSIKRNTTNP 66
Query: 89 VFNETFVFKVSFLNRSEVFEQGVPYADAMNKTLVFAIFDFDRFSKHDQIGEVKVALCQID 148
V+NET + +S S++ +TL +++ +DRF ++ +GEV++ L +
Sbjct: 67 VYNETLKYSIS---HSQL----------ETRTLQLSVWHYDRFGRNTFLGEVEIPLDSWN 113
Query: 149 LAQTIEEWRELQ 160
EE L
Sbjct: 114 FDSQHEECLPLH 125
>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 = 77.4 bits (191), Expect = 2e-18
Identities = 39/120 (32%), Positives = 56/120 (46%), Gaps = 2/120 (1%)
Query: 42 LSVTVIQAEDLPALDMGGTSDPYVKV-YLLPDKKKKFETKVHRKTLNPVFNETFVFKVSF 100
LSV V++ DL AL GT DP+ +V K TKV +KT NP F+E F F+++
Sbjct: 1 LSVRVLECRDL-ALKSNGTCDPFARVTLNYSSKTDTKRTKVKKKTNNPRFDEAFYFELTI 59
Query: 101 LNRSEVFEQGVPYADAMNKTLVFAIFDFDRFSKHDQIGEVKVALCQIDLAQTIEEWRELQ 160
E V D L ++ S D +GEV++ L + A + + W LQ
Sbjct: 60 GFSYEKKSFKVEEEDLEKSELRVELWHASMVSGDDFLGEVRIPLQGLQQAGSHQAWYFLQ 119
>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 = 76.6 bits (189), Expect = 3e-18
Identities = 46/122 (37%), Positives = 67/122 (54%), Gaps = 15/122 (12%)
Query: 37 FNANSLSVTVIQAEDLPALDMGGTSDPYVKVYLLPD--KKKKFETKVHRKTLNPVFNETF 94
+ +L V V+ A++LP LD G DPYVK YLLPD K K +TKV RKT NP FNE
Sbjct: 10 YKNGTLFVMVMHAKNLPLLD-GSDPDPYVKTYLLPDPQKTTKRKTKVVRKTRNPTFNEML 68
Query: 95 VFKVSFLNRSEVFEQGVPYADAMNKTLVFAIFDFDRFSKHDQIGEVKVALCQIDLAQTIE 154
V+ G+P D + L +++ D +++ +G V + L ++DL+Q E
Sbjct: 69 VY------------DGLPVEDLQQRVLQVSVWSHDSLVENEFLGGVCIPLKKLDLSQETE 116
Query: 155 EW 156
+W
Sbjct: 117 KW 118
>gnl|CDD|176048 cd08403, C2B_Synaptotagmin-3-5-6-9-10, C2 domain second repeat
present in Synaptotagmins 3, 5, 6, 9, and 10.
Synaptotagmin is a membrane-trafficking protein
characterized by a N-terminal transmembrane region, a
linker, and 2 C-terminal C2 domains. Synaptotagmin 3, a
member of class 3 synaptotagmins, is located in the
brain and localized to the active zone and plasma
membrane. It functions as a Ca2+ sensor for fast
exocytosis. It, along with synaptotagmins 5,6, and 10,
has disulfide bonds at its N-terminus. Synaptotagmin 9,
a class 5 synaptotagmins, is located in the brain and
localized to the synaptic vesicles. It is thought to be
a Ca2+-sensor for dense-core vesicle exocytosis.
Previously all synaptotagmins were thought to be calcium
sensors in the regulation of neurotransmitter release
and hormone secretion, but it has been shown that not
all of them bind calcium. Of the 17 identified
synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10).
The function of the two C2 domains that bind calcium
are: regulating the fusion step of synaptic vesicle
exocytosis (C2A) and binding to
phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the
absence of calcium ions and to phosphatidylinositol
bisphosphate (PIP2) in their presence (C2B). C2B also
regulates also the recycling step of synaptic vesicles.
C2 domains fold into an 8-standed beta-sandwich that can
adopt 2 structural arrangements: Type I and Type II,
distinguished by a circular permutation involving their
N- and C-terminal beta strands. Many C2 domains are
Ca2+-dependent membrane-targeting modules that bind a
wide variety of substances including bind phospholipids,
inositol polyphosphates, and intracellular proteins.
Most C2 domain proteins are either signal transduction
enzymes that contain a single C2 domain, such as protein
kinase C, or membrane trafficking proteins which contain
at least two C2 domains, such as synaptotagmin 1.
However, there are a few exceptions to this including
RIM isoforms and some splice variants of piccolo/aczonin
and intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. This cd contains the second C2
repeat, C2B, and has a type-I topology.
Length = 134
Score = 76.0 bits (187), Expect = 6e-18
Identities = 42/113 (37%), Positives = 63/113 (55%), Gaps = 15/113 (13%)
Query: 32 TLEYDFNANSLSVTVIQAEDLPALDMGGTSDPYVKVYLLPDKK--KKFETKVHRKTLNPV 89
+L Y A L++T+I+A +L A+D+ G SDPYVKV L+ + + KK +T V + TLNP
Sbjct: 6 SLCYLPTAGRLTLTIIKARNLKAMDITGFSDPYVKVSLMCEGRRLKKKKTSVKKNTLNPT 65
Query: 90 FNETFVFKVSFLNRSEVFEQGVPYADAMNKTLVFAIFDFDRFSKHDQIGEVKV 142
+NE VF V N V +L+ A+ D+DR ++ IG +V
Sbjct: 66 YNEALVFDVPPENVDNV-------------SLIIAVVDYDRVGHNELIGVCRV 105
>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 = 67.6 bits (166), Expect = 8e-15
Identities = 34/108 (31%), Positives = 47/108 (43%), Gaps = 25/108 (23%)
Query: 44 VTVIQAEDLPALDMGGTSDPYVKVYLLPDKKKKFETKVH--RKTLNPVFNETFVFKVSFL 101
V V++A +L D G SDPY+K+ L KKK + + TLNPVF + F + +
Sbjct: 4 VYVVRARNLQPKDPNGKSDPYLKIKLG---KKKINDRDNYIPNTLNPVFGKMFELEATL- 59
Query: 102 NRSEVFEQGVPYADAMNKTLVFAIFDFDRFSKHDQIGEVKVALCQIDL 149
P N L ++ D+D D IGE IDL
Sbjct: 60 ----------P----GNSILKISVMDYDLLGSDDLIGETV-----IDL 88
>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 = 66.9 bits (164), Expect = 1e-14
Identities = 33/114 (28%), Positives = 52/114 (45%), Gaps = 18/114 (15%)
Query: 41 SLSVTVIQAEDLPALDMGGTSDPYVKVYLLPDKKKKFETKVHRKTLNPVFNETFVFKVSF 100
L + + + +L A D GGTSDPYVK K +++K K LNPV++E F +
Sbjct: 1 QLDIHLKEGRNLAARDRGGTSDPYVKFKY--GGKTVYKSKTIYKNLNPVWDEKFTLPI-- 56
Query: 101 LNRSEVFEQGVPYADAMNKTLVFAIFDFDRFSKHDQIGEVKVALCQIDLAQTIE 154
+ + + L +FD+DR D +G V L ++L + E
Sbjct: 57 --------------EDVTQPLYIKVFDYDRGLTDDFMGSAFVDLSTLELNKPTE 96
>gnl|CDD|227371 COG5038, COG5038, Ca2+-dependent lipid-binding protein, contains C2
domain [General function prediction only].
Length = 1227
Score = 70.9 bits (174), Expect = 2e-14
Identities = 50/180 (27%), Positives = 84/180 (46%), Gaps = 23/180 (12%)
Query: 15 LNLKVLLTDLPIFKPEQTLEYDFNANSLSVTVIQAEDLPALDMGGTSDPYVKVYLLPDKK 74
+ V ++ P+ +E N+ L++ + E+LP+ D G SDP+VK++L ++K
Sbjct: 1015 AKVLVQVSYTPVPVKLPPVEMVENSGYLTIMLRSGENLPSSDENGYSDPFVKLFL--NEK 1072
Query: 75 KKFETKVHRKTLNPVFNETFVFKVSFLNRSEVFEQGVPYADAMNKTLVFAIFDFDRFSKH 134
++TKV +KTLNPV+NE F +V LNR L + D+D K+
Sbjct: 1073 SVYKTKVVKKTLNPVWNEEFTIEV--LNRV-------------KDVLTINVNDWDSGEKN 1117
Query: 135 DQIGEVKVALCQIDLAQTIEEWRELQSVEGEGGQVYYLDGPKGNLATGKKALYLPNVGVK 194
D +G +IDL++ ++ +G LDG + ++ Y NV K
Sbjct: 1118 DLLGT-----AEIDLSKLEPGGTTNSNIPLDGKTFIVLDGTL-HPGFNFRSKYALNVSRK 1171
Score = 40.1 bits (94), Expect = 4e-04
Identities = 30/105 (28%), Positives = 47/105 (44%), Gaps = 20/105 (19%)
Query: 42 LSVTVIQAEDLPALD--MGGTSDPYVKVYLLPDKKKKFETKVHRKTLNPVFNETFVFKVS 99
+ V + AE L D + GT DPY+ V + +T+V + TLNPV+NETF
Sbjct: 438 VEVKIKSAEGLKKSDSTINGTVDPYITVTF--SDRVIGKTRVKKNTLNPVWNETF---YI 492
Query: 100 FLNRSEVFEQGVPYADAMNKTLVFAIFDFDRFSKHDQIGEVKVAL 144
LN + L +++DF+ F +G ++ L
Sbjct: 493 LLN-------------SFTDPLNLSLYDFNSFKSDKVVGSTQLDL 524
Score = 40.1 bits (94), Expect = 5e-04
Identities = 20/51 (39%), Positives = 28/51 (54%), Gaps = 2/51 (3%)
Query: 42 LSVTVIQAEDLPALDMGGTSDPYVKVYLLPDKKKKFETKVHRKTLNPVFNE 92
+ V+V +A DL GG SDPY V + + K+ T TLNP++NE
Sbjct: 713 IRVSVRKANDLRNEIPGGKSDPYATVLV--NNLVKYRTIYGSSTLNPIWNE 761
>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 = 64.9 bits (158), Expect = 1e-13
Identities = 37/111 (33%), Positives = 58/111 (52%), Gaps = 15/111 (13%)
Query: 32 TLEYDFNANSLSVTVIQAEDLPALDMGGTSDPYVKVYLLPDKK--KKFETKVHRKTLNPV 89
+L Y +A L+V +I+A+ L DM SDP+VK+ L+ K K +T R T++P
Sbjct: 6 SLNYLPSAGRLNVDIIRAKQLLQTDMSQGSDPFVKIQLVHGLKLIKTKKTSCMRGTIDPF 65
Query: 90 FNETFVFKVSFLNRSEVFEQGVPYADAMNKTLVFAIFDFDRFSKHDQIGEV 140
+NE+F FK VP + N +LVF ++ + S +D IG +
Sbjct: 66 YNESFSFK-------------VPQEELENVSLVFTVYGHNVKSSNDFIGRI 103
>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 = 63.9 bits (156), Expect = 2e-13
Identities = 39/128 (30%), Positives = 60/128 (46%), Gaps = 25/128 (19%)
Query: 42 LSVTVIQAEDLPALDMG------GTSDPYVKVYLLPDKKKKFETKVHRKTLNPVFNETFV 95
L + VI+A+DL A D G SDPYV V + + F++KV ++ LNP +NE +
Sbjct: 3 LRIHVIEAQDLVAKDKFVGGLVKGKSDPYVIVRVGA---QTFKSKVIKENLNPKWNEVY- 58
Query: 96 FKVSFLNRSEVFEQGVPYADAMNKTLVFAIFDFDRFSKHDQIGEVKVALCQIDLAQTIEE 155
E VP + L +FD D K D +G + + L ++ I+E
Sbjct: 59 ---------EAVVDEVP-----GQELEIELFDEDP-DKDDFLGRLSIDLGSVEKKGFIDE 103
Query: 156 WRELQSVE 163
W L+ V+
Sbjct: 104 WLPLEDVK 111
>gnl|CDD|176004 cd04039, C2_PSD, C2 domain present in Phosphatidylserine
decarboxylase (PSD). PSD is involved in the
biosynthesis of aminophospholipid by converting
phosphatidylserine (PtdSer) to phosphatidylethanolamine
(PtdEtn). There is a single C2 domain present and it is
thought to confer PtdSer binding motif that is common to
PKC and synaptotagmin. C2 domains fold into an 8-standed
beta-sandwich that can adopt 2 structural arrangements:
Type I and Type II, distinguished by a circular
permutation involving their N- and C-terminal beta
strands. Many C2 domains are Ca2+-dependent
membrane-targeting modules that bind a wide variety of
substances including bind phospholipids, inositol
polyphosphates, and intracellular proteins. Most C2
domain proteins are either signal transduction enzymes
that contain a single C2 domain, such as protein kinase
C, or membrane trafficking proteins which contain at
least two C2 domains, such as synaptotagmin 1. However,
there are a few exceptions to this including RIM
isoforms and some splice variants of piccolo/aczonin and
intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions.
Length = 108
Score = 62.3 bits (152), Expect = 6e-13
Identities = 31/122 (25%), Positives = 50/122 (40%), Gaps = 30/122 (24%)
Query: 44 VTVIQAEDLPAL--------DMGGTSDPYVKVYLLPDKKKKFETKVHRKTLNPVFNETFV 95
+ + DLP L DM DP+V + ++ F T R TLNPVFNE
Sbjct: 5 MEIKSITDLPPLKNMTRTGFDM----DPFVIISF---GRRVFRTSWRRHTLNPVFNERLA 57
Query: 96 FKVSFLNRSEVFEQGVPYADAMNKTLVFAIFDFDRFSKHDQIGEVKVALCQ-IDLAQTIE 154
F+V Y N + F + D D+FS +D + +++ + ++ A +
Sbjct: 58 FEV--------------YPHEKNFDIQFKVLDKDKFSFNDYVATGSLSVQELLNAAPQPD 103
Query: 155 EW 156
Sbjct: 104 PE 105
>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 = 60.5 bits (147), Expect = 4e-12
Identities = 37/126 (29%), Positives = 57/126 (45%), Gaps = 23/126 (18%)
Query: 42 LSVTVIQAEDLPALDMG--GTSDPYVKVYLLPDKKKKFETKVHRKTLNPVFNETFVFKVS 99
L V V++A+DL A D G SDPY + + ++F+T+ TLNP +N F
Sbjct: 3 LRVHVVEAKDLAAKDRSGKGKSDPYAILSV---GAQRFKTQTIPNTLNPKWNYWCEF--- 56
Query: 100 FLNRSEVFEQGVPYADAMNKTLVFAIFDFDRFSKHDQIGEVKVALCQIDLAQTIEE---W 156
P A N+ L ++D DRF+ D +GE +AL ++ + W
Sbjct: 57 ------------PIFSAQNQLLKLILWDKDRFAGKDYLGEFDIALEEVFADGKTGQSDKW 104
Query: 157 RELQSV 162
L+S
Sbjct: 105 ITLKST 110
>gnl|CDD|175977 cd04010, C2B_RasA3, C2 domain second repeat present in RAS p21
protein activator 3 (RasA3). RasA3 are members of
GTPase activating protein 1 (GAP1), a Ras-specific GAP,
which suppresses Ras function by enhancing the GTPase
activity of Ras proteins resulting in the inactive
GDP-bound form of Ras. In this way it can control
cellular proliferation and differentiation. RasA3
contains an N-terminal C2 domain, a Ras-GAP domain, a
plextrin homology (PH)-like domain, and a Bruton's
Tyrosine Kinase (BTK) zinc binding domain. C2 domains
fold into an 8-standed beta-sandwich that can adopt 2
structural arrangements: Type I and Type II,
distinguished by a circular permutation involving their
N- and C-terminal beta strands. Many C2 domains are
Ca2+-dependent membrane-targeting modules that bind a
wide variety of substances including bind phospholipids,
inositol polyphosphates, and intracellular proteins.
Most C2 domain proteins are either signal transduction
enzymes that contain a single C2 domain, such as protein
kinase C, or membrane trafficking proteins which contain
at least two C2 domains, such as synaptotagmin 1.
However, there are a few exceptions to this including
RIM isoforms and some splice variants of piccolo/aczonin
and intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. This cd contains the second C2
repeat, C2B, and has a type-I topology.
Length = 148
Score = 60.5 bits (147), Expect = 6e-12
Identities = 43/123 (34%), Positives = 58/123 (47%), Gaps = 7/123 (5%)
Query: 42 LSVTVIQAEDLPALDMGGTSDPYVKVYLLPDKKK---KFETKVHRKTLNPVFNETFVFKV 98
LSV VI+ DL GT DPY V L+ KK K TKV +KT NP F+E F F V
Sbjct: 2 LSVRVIECSDLAL--KNGTCDPYASVTLIYSNKKQDTKR-TKVKKKTNNPQFDEAFYFDV 58
Query: 99 SFLNRSEVFEQGVPYADAMNKTLVFAIFDFDRFSKHDQIGEVKVALCQIDLAQTIEE-WR 157
+ + E + +P DA L ++ +GEV++ L +DL + W
Sbjct: 59 TIDSSPEKKQFEMPEEDAEKLELRVDLWHASMGGGDVFLGEVRIPLRGLDLQAGSHQAWY 118
Query: 158 ELQ 160
LQ
Sbjct: 119 FLQ 121
>gnl|CDD|176029 cd08383, C2A_RasGAP, C2 domain (first repeat) of Ras GTPase
activating proteins (GAPs). RasGAPs suppress Ras
function by enhancing the GTPase activity of Ras
proteins resulting in the inactive GDP-bound form of
Ras. In this way it can control cellular proliferation
and differentiation. The proteins here all contain
either a single C2 domain or two tandem C2 domains, a
Ras-GAP domain, and a pleckstrin homology (PH)-like
domain. C2 domains fold into an 8-standed beta-sandwich
that can adopt 2 structural arrangements: Type I and
Type II, distinguished by a circular permutation
involving their N- and C-terminal beta strands. Many C2
domains are Ca2+-dependent membrane-targeting modules
that bind a wide variety of substances including bind
phospholipids, inositol polyphosphates, and
intracellular proteins. Most C2 domain proteins are
either signal transduction enzymes that contain a single
C2 domain, such as protein kinase C, or membrane
trafficking proteins which contain at least two C2
domains, such as synaptotagmin 1. However, there are a
few exceptions to this including RIM isoforms and some
splice variants of piccolo/aczonin and intersectin which
only have a single C2 domain. C2 domains with a calcium
binding region have negatively charged residues,
primarily aspartates, that serve as ligands for calcium
ions. Members here have a type-I topology.
Length = 117
Score = 59.2 bits (144), Expect = 1e-11
Identities = 44/133 (33%), Positives = 58/133 (43%), Gaps = 24/133 (18%)
Query: 41 SLSVTVIQAEDLPALDMGGTSDPYVKVYLLPDKKKKFETKVHRKTLNPVFNETFVFKVSF 100
SL + +++A++LP+ GT DPY V L D+ + TK + LNP + E FVF
Sbjct: 1 SLRLRILEAKNLPS---KGTRDPYCTVSL--DQVEVARTKT-VEKLNPFWGEEFVFDD-- 52
Query: 101 LNRSEVFEQGVPYADAMNKTLVFAIFDFDRFSKHDQIGEVKVALCQIDLAQTIEEWRELQ 160
P D TL F D SK I KVAL ++DL Q +EW L
Sbjct: 53 -----------PPPDVTFFTLSFYNKDKR--SKDRDIVIGKVALSKLDLGQGKDEWFPLT 99
Query: 161 SV---EGEGGQVY 170
V G V
Sbjct: 100 PVDPDSEVQGSVR 112
>gnl|CDD|176051 cd08406, C2B_Synaptotagmin-12, C2 domain second repeat present in
Synaptotagmin 12. Synaptotagmin is a
membrane-trafficking protein characterized by a
N-terminal transmembrane region, a linker, and 2
C-terminal C2 domains. Synaptotagmin 12, a member of
class 6 synaptotagmins, is located in the brain. It
functions are unknown. It, like synaptotagmins 8 and
13, do not have any consensus Ca2+ binding sites.
Previously all synaptotagmins were thought to be
calcium sensors in the regulation of neurotransmitter
release and hormone secretion, but it has been shown
that not all of them bind calcium. Of the 17
identified synaptotagmins only 8 bind calcium (1-3,
5-7, 9, 10). The function of the two C2 domains that
bind calcium are: regulating the fusion step of
synaptic vesicle exocytosis (C2A) and binding to
phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the
absence of calcium ions and to phosphatidylinositol
bisphosphate (PIP2) in their presence (C2B). C2B also
regulates also the recycling step of synaptic vesicles.
C2 domains fold into an 8-standed beta-sandwich that
can adopt 2 structural arrangements: Type I and Type
II, distinguished by a circular permutation involving
their N- and C-terminal beta strands. Many C2 domains
are Ca2+-dependent membrane-targeting modules that bind
a wide variety of substances including bind
phospholipids, inositol polyphosphates, and
intracellular proteins. Most C2 domain proteins are
either signal transduction enzymes that contain a
single C2 domain, such as protein kinase C, or membrane
trafficking proteins which contain at least two C2
domains, such as synaptotagmin 1. However, there are a
few exceptions to this including RIM isoforms and some
splice variants of piccolo/aczonin and intersectin
which only have a single C2 domain. C2 domains with a
calcium binding region have negatively charged
residues, primarily aspartates, that serve as ligands
for calcium ions. This cd contains the second C2
repeat, C2B, and has a type-I topology.
Length = 136
Score = 59.0 bits (143), Expect = 2e-11
Identities = 30/70 (42%), Positives = 42/70 (60%), Gaps = 2/70 (2%)
Query: 32 TLEYDFNANSLSVTVIQAEDLPALDMGGTSDPYVKVYLLPDKKK--KFETKVHRKTLNPV 89
+L Y A L+V V++A +L + T+DP+VKVYLL D +K K +T V R NP+
Sbjct: 7 SLSYLPTAERLTVVVVKARNLVWDNGKTTADPFVKVYLLQDGRKISKKKTSVKRDDTNPI 66
Query: 90 FNETFVFKVS 99
FNE +F V
Sbjct: 67 FNEAMIFSVP 76
>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 = 57.3 bits (139), Expect = 4e-11
Identities = 36/104 (34%), Positives = 52/104 (50%), Gaps = 13/104 (12%)
Query: 42 LSVTVIQAEDLPALDMG-GTSDPYVKVYLLPDKKKKFETKVHRKTLNPVFNETFVFKVSF 100
L VT+ +A DLP D G G+SDPYV K + T++ RK LNPV+ ET+ V
Sbjct: 3 LVVTIHRATDLPKADFGTGSSDPYVTASFAKFGKPLYSTRIIRKDLNPVWEETWFVLV-- 60
Query: 101 LNRSEVFEQGVPYADAMNKTLVFAIFDFDRFSKHDQIGEVKVAL 144
P + L ++D DRF+ D++G V++ L
Sbjct: 61 ----------TPDEVKAGERLSCRLWDSDRFTADDRLGRVEIDL 94
>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 = 57.2 bits (139), Expect = 5e-11
Identities = 29/100 (29%), Positives = 41/100 (41%), Gaps = 18/100 (18%)
Query: 43 SVTVIQAEDLPALDMGGTSDPYVKVYLLPDKKKKFETKVHRKTLNPVFNETFVFKVSFLN 102
V VI+A L GG DP VKV + KK T V + T P +NE F F +
Sbjct: 7 RVRVIEARQLV----GGNIDPVVKVEVGGQKKY---TSVKKGTNCPFYNEYFFFNF-HES 58
Query: 103 RSEVFEQGVPYADAMNKTLVFAIFDFDRFSKHDQIGEVKV 142
E+F +K + +++D IG K+
Sbjct: 59 PDELF----------DKIIKISVYDSRSLRSDTLIGSFKL 88
>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 = 57.7 bits (140), Expect = 5e-11
Identities = 38/107 (35%), Positives = 55/107 (51%), Gaps = 20/107 (18%)
Query: 42 LSVTVIQAEDLPALDMGGTSDPYVKVYLLPDKK----KKFETKVHRKTLNPVFNETFVFK 97
L V V+ DL D+ G SDPYVK+ L +TK +KTLNP +NE F F+
Sbjct: 2 LRVKVLAGIDLAKKDIFGASDPYVKISLYDPDGNGEIDSVQTKTIKKTLNPKWNEEFFFR 61
Query: 98 VSFLNRSEVFEQGVPYADAMNKTLVFAIFDFDRFSKHDQIGEVKVAL 144
V N E ++ L+F +FD +R ++ D +G+V+V L
Sbjct: 62 V---NPRE------------HR-LLFEVFDENRLTRDDFLGQVEVPL 92
>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 = 56.9 bits (138), Expect = 6e-11
Identities = 32/104 (30%), Positives = 50/104 (48%), Gaps = 16/104 (15%)
Query: 42 LSVTVIQAEDLPALD-MGGTSDPYVKVYLLPDKKKKFETKVHRKTLNPVFNETFVFKVSF 100
L V V+ A DLP +D +D +V+V ++T V +K+LNPV+N
Sbjct: 1 LKVRVVAARDLPVMDRSSDLTDAFVEVKFG---STTYKTDVVKKSLNPVWN--------- 48
Query: 101 LNRSEVFEQGVPYADAMNKTLVFAIFDFDRFSKHDQIGEVKVAL 144
SE F V + ++ L + D D +S +D IG+V + L
Sbjct: 49 ---SEWFRFEVDDEELQDEPLQIRVMDHDTYSANDAIGKVYIDL 89
>gnl|CDD|176003 cd04038, C2_ArfGAP, C2 domain present in Arf GTPase Activating
Proteins (GAP). ArfGAP is a GTPase activating protein
which regulates the ADP ribosylation factor Arf, a
member of the Ras superfamily of GTP-binding proteins.
The GTP-bound form of Arf is involved in Golgi
morphology and is involved in recruiting coat proteins.
ArfGAP is responsible for the GDP-bound form of Arf
which is necessary for uncoating the membrane and
allowing the Golgi to fuse with an acceptor compartment.
These proteins contain an N-terminal ArfGAP domain
containing the characteristic zinc finger motif
(Cys-x2-Cys-x(16,17)-x2-Cys) and C-terminal C2 domain.
C2 domains were first identified in Protein Kinase C
(PKC). C2 domains fold into an 8-standed beta-sandwich
that can adopt 2 structural arrangements: Type I and
Type II, distinguished by a circular permutation
involving their N- and C-terminal beta strands. Many C2
domains are Ca2+-dependent membrane-targeting modules
that bind a wide variety of substances including bind
phospholipids, inositol polyphosphates, and
intracellular proteins. Most C2 domain proteins are
either signal transduction enzymes that contain a single
C2 domain, such as protein kinase C, or membrane
trafficking proteins which contain at least two C2
domains, such as synaptotagmin 1. However, there are a
few exceptions to this including RIM isoforms and some
splice variants of piccolo/aczonin and intersectin which
only have a single C2 domain. C2 domains with a calcium
binding region have negatively charged residues,
primarily aspartates, that serve as ligands for calcium
ions.
Length = 145
Score = 57.7 bits (140), Expect = 7e-11
Identities = 34/103 (33%), Positives = 46/103 (44%), Gaps = 20/103 (19%)
Query: 42 LSVTVIQAEDLPALDMGGTSDPYVKVYLLPDKKKKFETKVHRKTLNPVFNETFVFKVSFL 101
L V V++ +L D +SDPYV + L K K T+V +K LNPV+NE V
Sbjct: 4 LKVRVVRGTNLAVRDFT-SSDPYVVLTLGNQKVK---TRVIKKNLNPVWNEELTLSVP-- 57
Query: 102 NRSEVFEQGVPYADAMNKTLVFAIFDFDRFSKHDQIGEVKVAL 144
L +FD D FSK D +GE ++ L
Sbjct: 58 --------------NPMAPLKLEVFDKDTFSKDDSMGEAEIDL 86
>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 = 55.7 bits (135), Expect = 2e-10
Identities = 38/131 (29%), Positives = 66/131 (50%), Gaps = 20/131 (15%)
Query: 42 LSVTVIQAEDLPALDMGGTSDPYVKVYLLPDKKKKFETKVHRKTLNPVFNETFVFKVSFL 101
+++ +++ ++LP +D G SDPYVK L +K+++KV KTLNP + E F + F
Sbjct: 2 VTIVLVEGKNLPPMDDNGLSDPYVKFRL---GNEKYKSKVCSKTLNPQWLEQFDLHL-FD 57
Query: 102 NRSEVFEQGVPYADAMNKTLVFAIFDFDRFSKHDQIGEVKVALCQIDLAQTIEEWRELQS 161
++S++ E ++D D K + IG ++ L + QT EL+
Sbjct: 58 DQSQILE--------------IEVWDKDTGKKDEFIGRCEIDLSALPREQTHSLELELE- 102
Query: 162 VEGEGGQVYYL 172
+GEG + L
Sbjct: 103 -DGEGSLLLLL 112
>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 = 56.0 bits (135), Expect = 2e-10
Identities = 36/119 (30%), Positives = 58/119 (48%), Gaps = 18/119 (15%)
Query: 42 LSVTVIQAEDLPALDMGGTSDPYVKVYLLPDKKKKFETKVHRKTLNPVFNETFVFKVSFL 101
L V++A DL D GTSDP+V+V+ + ET V +K+ P +NE F F++
Sbjct: 2 LRCHVLEARDLAPKDRNGTSDPFVRVFY---NGQTLETSVVKKSCYPRWNEVFEFELM-- 56
Query: 102 NRSEVFEQGVPYADAMNKTLVFAIFDFDRFSKHDQIGEVKVALCQIDLAQTIEEWRELQ 160
AD+ L ++D+D SK+D +G+V ++ + A+ E W L
Sbjct: 57 ----------EGADSP---LSVEVWDWDLVSKNDFLGKVVFSIQTLQQAKQEEGWFRLL 102
>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 = 55.4 bits (134), Expect = 3e-10
Identities = 31/106 (29%), Positives = 50/106 (47%), Gaps = 19/106 (17%)
Query: 42 LSVTVIQAEDLPALDMGGTSDPYVKVYLLPDKKKKFETKVHRKTLNPVFNETFVFKVSFL 101
L V VI+A L A D+GG SDP+ + L+ + +T KTLNP +N+ F F +
Sbjct: 3 LQVKVIRASGLAAADIGGKSDPFCVLELVNA---RLQTHTIYKTLNPEWNKIFTFPIK-- 57
Query: 102 NRSEVFEQGVPYADAMNKTLVFAIFDFDRFSKHDQIGEVKVALCQI 147
++ L ++D D+ K + +G+V + L I
Sbjct: 58 --------------DIHDVLEVTVYDEDKDKKPEFLGKVAIPLLSI 89
>gnl|CDD|175974 cd00275, C2_PLC_like, C2 domain present in
Phosphoinositide-specific phospholipases C (PLC). PLCs
are involved in the hydrolysis of
phosphatidylinositol-4,5-bisphosphate (PIP2) to
d-myo-inositol-1,4,5-trisphosphate (1,4,5-IP3) and
sn-1,2-diacylglycerol (DAG). 1,4,5-IP3 and DAG are
second messengers in eukaryotic signal transduction
cascades. PLC is composed of a N-terminal PH domain
followed by a series of EF hands, a catalytic TIM barrel
and a C-terminal C2 domain. C2 domains fold into an
8-standed beta-sandwich that can adopt 2 structural
arrangements: Type I and Type II, distinguished by a
circular permutation involving their N- and C-terminal
beta strands. Many C2 domains are Ca2+-dependent
membrane-targeting modules that bind a wide variety of
substances including bind phospholipids, inositol
polyphosphates, and intracellular proteins. Most C2
domain proteins are either signal transduction enzymes
that contain a single C2 domain, such as protein kinase
C, or membrane trafficking proteins which contain at
least two C2 domains, such as synaptotagmin 1. However,
there are a few exceptions to this including RIM
isoforms and some splice variants of piccolo/aczonin and
intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. Members here have a type-II
topology.
Length = 128
Score = 55.2 bits (134), Expect = 4e-10
Identities = 26/66 (39%), Positives = 36/66 (54%), Gaps = 6/66 (9%)
Query: 41 SLSVTVIQAEDLP--ALDMGGTSDPYVKVYLL---PDKKKKFETK-VHRKTLNPVFNETF 94
+L++ +I + LP D G DPYV+V + D KF+TK V NPV+NETF
Sbjct: 3 TLTIKIISGQQLPKPKGDKGSIVDPYVEVEIHGLPADDSAKFKTKVVKNNGFNPVWNETF 62
Query: 95 VFKVSF 100
F V+
Sbjct: 63 EFDVTV 68
>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 = 55.2 bits (133), Expect = 4e-10
Identities = 30/73 (41%), Positives = 39/73 (53%), Gaps = 3/73 (4%)
Query: 30 EQTLEYDFNANSLSVTVIQAEDLPALDMGGTS-DPYVKVYLLPDKKK--KFETKVHRKTL 86
E L Y+F + L +T+ +L D PYVKV LLPDK K +T V + T+
Sbjct: 5 EFALHYNFRTSCLEITIKACRNLAYGDEKKKKCHPYVKVCLLPDKSHNSKRKTAVKKGTV 64
Query: 87 NPVFNETFVFKVS 99
NPVFNET + V
Sbjct: 65 NPVFNETLKYVVE 77
>gnl|CDD|176053 cd08408, C2B_Synaptotagmin-14_16, C2 domain second repeat present
in Synaptotagmins 14 and 16. Synaptotagmin 14 and 16
are membrane-trafficking proteins in specific tissues
outside the brain. Both of these contain C-terminal
tandem C2 repeats, but only Synaptotagmin 14 has an
N-terminal transmembrane domain and a putative
fatty-acylation site. Previously all synaptotagmins were
thought to be calcium sensors in the regulation of
neurotransmitter release and hormone secretion, but it
has been shown that not all of them bind calcium and
this is indeed the case here. Of the 17 identified
synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10).
The function of the two C2 domains that bind calcium
are: regulating the fusion step of synaptic vesicle
exocytosis (C2A) and binding to
phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the
absence of calcium ions and to phosphatidylinositol
bisphosphate (PIP2) in their presence (C2B). C2B also
regulates also the recycling step of synaptic vesicles.
C2 domains fold into an 8-standed beta-sandwich that can
adopt 2 structural arrangements: Type I and Type II,
distinguished by a circular permutation involving their
N- and C-terminal beta strands. Many C2 domains are
Ca2+-dependent membrane-targeting modules that bind a
wide variety of substances including bind phospholipids,
inositol polyphosphates, and intracellular proteins.
Most C2 domain proteins are either signal transduction
enzymes that contain a single C2 domain, such as protein
kinase C, or membrane trafficking proteins which contain
at least two C2 domains, such as synaptotagmin 1.
However, there are a few exceptions to this including
RIM isoforms and some splice variants of piccolo/aczonin
and intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. This cd contains the second C2
repeat, C2B, and has a type-I topology.
Length = 138
Score = 53.9 bits (130), Expect = 2e-09
Identities = 43/141 (30%), Positives = 65/141 (46%), Gaps = 19/141 (13%)
Query: 33 LEYDFNANSLSVTVIQAEDLPALDMGGTSDPYVKVYLLPDKKK---KFETKVHRKTLNPV 89
LEY+ LSV VI+ + L M D YVK+ LL + K +T + R +P
Sbjct: 8 LEYNALTGRLSVEVIKGSNFKNLAMNKAPDTYVKLTLLNSDGQEISKSKTSIRRGQPDPE 67
Query: 90 FNETFVFKVSFLNRSEVFEQGVPYADAMNKTLVFAIFDFDRFSKHDQIGEVKVALCQIDL 149
F ETFVF+V+ SEV TL+F++++ + + + IG + L
Sbjct: 68 FKETFVFQVALFQLSEV-------------TLMFSVYNKRKMKRKEMIGWFSLGLNSSGE 114
Query: 150 AQTIEEWRELQSVEGEGGQVY 170
+ E W E+ E +G QV
Sbjct: 115 EE-EEHWNEM--KESKGQQVC 132
>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 = 52.3 bits (126), Expect = 4e-09
Identities = 21/57 (36%), Positives = 37/57 (64%)
Query: 42 LSVTVIQAEDLPALDMGGTSDPYVKVYLLPDKKKKFETKVHRKTLNPVFNETFVFKV 98
L+V V++A ++ D+ T D YV+++L +K TK + ++NPV+NETF F++
Sbjct: 2 LTVRVLRATNITKGDLLSTPDCYVELWLPTASDEKKRTKTIKNSINPVWNETFEFRI 58
>gnl|CDD|176011 cd04046, C2_Calpain, C2 domain present in Calpain proteins. A
single C2 domain is found in calpains (EC 3.4.22.52, EC
3.4.22.53), calcium-dependent, non-lysosomal cysteine
proteases. Caplains are classified as belonging to
Clan CA by MEROPS and include six families: C1, C2,
C10, C12, C28, and C47. C2 domains fold into an
8-standed beta-sandwich that can adopt 2 structural
arrangements: Type I and Type II, distinguished by a
circular permutation involving their N- and C-terminal
beta strands. Many C2 domains are Ca2+-dependent
membrane-targeting modules that bind a wide variety of
substances including bind phospholipids, inositol
polyphosphates, and intracellular proteins. Most C2
domain proteins are either signal transduction enzymes
that contain a single C2 domain, such as protein kinase
C, or membrane trafficking proteins which contain at
least two C2 domains, such as synaptotagmin 1.
However, there are a few exceptions to this including
RIM isoforms and some splice variants of
piccolo/aczonin and intersectin which only have a
single C2 domain. C2 domains with a calcium binding
region have negatively charged residues, primarily
aspartates, that serve as ligands for calcium ions.
Length = 126
Score = 51.9 bits (125), Expect = 7e-09
Identities = 18/54 (33%), Positives = 27/54 (50%), Gaps = 3/54 (5%)
Query: 43 SVTVIQAEDLPALDMGGTSDPYVKVYLLPDKKKKFETKVHRKTLNPVFNETFVF 96
V V AE L D GG +DPYV + + + + V + TL+P F+ +F
Sbjct: 6 QVHVHSAEGLSKQDSGGGADPYVIIK---CEGESVRSPVQKDTLSPEFDTQAIF 56
>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 = 51.1 bits (123), Expect = 1e-08
Identities = 26/99 (26%), Positives = 39/99 (39%), Gaps = 21/99 (21%)
Query: 43 SVTVIQAEDLPALDMGGTSDPYVKVYLLPDKKKKFE---TKVHRKTLNPVFNETFVFKVS 99
++ +++AE+L A G SDPYV L D K T+ TLNP ++E F +V
Sbjct: 4 TIRIVRAENLKADSSNGLSDPYV---TLVDTNGKRRIAKTRTIYDTLNPRWDEEFELEVP 60
Query: 100 FLNRSEVFEQGVPYADAMNKTLVFAIFDFDRFSKHDQIG 138
+ ++D KHD G
Sbjct: 61 AGEPL---------------WISATVWDRSFVGKHDLCG 84
>gnl|CDD|176062 cd08680, C2_Kibra, C2 domain found in Human protein Kibra. Kibra
is thought to be a regulator of the Salvador
(Sav)/Warts (Wts)/Hippo (Hpo) (SWH) signaling network,
which limits tissue growth by inhibiting cell
proliferation and promoting apoptosis. The core of the
pathway consists of a MST and LATS family kinase
cascade that ultimately phosphorylates and inactivates
the YAP/Yorkie (Yki) transcription coactivator. The
FERM domain proteins Merlin (Mer) and Expanded (Ex) are
part of the upstream regulation controlling pathway
mechanism. Kibra colocalizes and associates with Mer
and Ex and is thought to transduce an extracellular
signal via the SWH network. The apical scaffold
machinery that contains Hpo, Wts, and Ex recruits Yki
to the apical membrane facilitating its inhibitory
phosphorlyation by Wts. Since Kibra associates with Ex
and is apically located it is hypothesized that KIBRA
is part of the scaffold, helps in the Hpo/Wts complex,
and helps recruit Yki for inactivation that promotes
SWH pathway activity. Kibra contains two
amino-terminal WW domains, an internal C2-like domain,
and a carboxy-terminal glutamic acid-rich stretch. 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 = 124
Score = 50.7 bits (122), Expect = 2e-08
Identities = 27/70 (38%), Positives = 34/70 (48%), Gaps = 3/70 (4%)
Query: 33 LEYDFNANSLSVTVIQAEDLPALDMGGTSDPYVKVYLLP---DKKKKFETKVHRKTLNPV 89
L YD +SL ++V Q +L AL + S YV+V LLP F TK PV
Sbjct: 7 LRYDSGDSSLVISVEQLRNLSALSIPENSKVYVRVALLPCSSSTSCLFRTKALEDQDKPV 66
Query: 90 FNETFVFKVS 99
FNE F +S
Sbjct: 67 FNEVFRVPIS 76
>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 = 50.6 bits (121), Expect = 2e-08
Identities = 27/56 (48%), Positives = 36/56 (64%), Gaps = 3/56 (5%)
Query: 42 LSVTVIQAEDLPALDMGGTSDPYVKVYLLPDKKKKFETKVHRKTLNPVFNETFVFK 97
+S+TV+ A+ L A D GTSDPYV V + KK+ TK + LNPV+NE F F+
Sbjct: 3 ISITVVCAQGLIAKDKTGTSDPYVTVQVGKTKKR---TKTIPQNLNPVWNEKFHFE 55
>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 = 50.3 bits (121), Expect = 2e-08
Identities = 28/113 (24%), Positives = 49/113 (43%), Gaps = 16/113 (14%)
Query: 47 IQAEDLPALDMGGTSDPYVKVY-LLPDKKKK--FETKVHRKTLNPVFNETFVFKVSFLNR 103
+ L D G SDP++++ D + T+V + TLNPV+ F + L
Sbjct: 7 FSGKKLDKKDFFGKSDPFLEISRQSEDGTWVLVYRTEVIKNTLNPVWKP-FTIPLQKLC- 64
Query: 104 SEVFEQGVPYADAMNKTLVFAIFDFDRFSKHDQIGEVKVALCQIDLAQTIEEW 156
D ++ + ++D+D KHD IGE + L ++ L + E+
Sbjct: 65 ---------NGD-YDRPIKIEVYDYDSSGKHDLIGEFETTLDEL-LKSSPLEF 106
>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 = 50.4 bits (121), Expect = 3e-08
Identities = 25/58 (43%), Positives = 33/58 (56%), Gaps = 3/58 (5%)
Query: 42 LSVTVIQAEDLPALDMGGTSDPYVKVYLLPDKKKKFETKVHRKTLNPVFNETFVFKVS 99
L V V+ A+DL D G+S YV++ KK+ T+ K LNPV+NE VF VS
Sbjct: 2 LVVEVVDAQDLMPKDGQGSSSAYVELDFDGQKKR---TRTKPKDLNPVWNEKLVFNVS 56
>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 = 50.8 bits (122), Expect = 3e-08
Identities = 30/83 (36%), Positives = 41/83 (49%), Gaps = 26/83 (31%)
Query: 42 LSVTVIQAEDLPALDMGGTSDPYVKVYLLPD--------KKKKFE--------------- 78
L VTVI+A+ L A D+ G SDPY + ++P KK+
Sbjct: 30 LKVTVIEAKGLLAKDVNGFSDPYCMLGIVPASRERNSEKSKKRKSHRKKAVLKDTVPAKS 89
Query: 79 ---TKVHRKTLNPVFNETFVFKV 98
T+V +TLNPV+NETF F+V
Sbjct: 90 IKVTEVKPQTLNPVWNETFRFEV 112
>gnl|CDD|175994 cd04028, C2B_RIM1alpha, C2 domain second repeat contained in
Rab3-interacting molecule (RIM) proteins. RIMs are
believed to organize specialized sites of the plasma
membrane called active zones. They also play a role in
controlling neurotransmitter release, plasticity
processes, as well as memory and learning. RIM contains
an N-terminal zinc finger domain, a PDZ domain, and two
C-terminal C2 domains (C2A, C2B). C2 domains fold into
an 8-standed beta-sandwich that can adopt 2 structural
arrangements: Type I and Type II, distinguished by a
circular permutation involving their N- and C-terminal
beta strands. Many C2 domains are Ca2+-dependent
membrane-targeting modules that bind a wide variety of
substances including bind phospholipids, inositol
polyphosphates, and intracellular proteins. Most C2
domain proteins are either signal transduction enzymes
that contain a single C2 domain, such as protein kinase
C, or membrane trafficking proteins which contain at
least two C2 domains, such as synaptotagmin 1. However,
there are a few exceptions to this including RIM
isoforms and some splice variants of piccolo/aczonin and
intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. Members here have a type-I
topology and do not bind Ca2+.
Length = 146
Score = 49.7 bits (119), Expect = 5e-08
Identities = 40/122 (32%), Positives = 57/122 (46%), Gaps = 20/122 (16%)
Query: 42 LSVTVIQAEDL-PALDMGGTSDPYVKVYLLPDKK--KKFETKVHRKTLNPVFNETFVFKV 98
L V VI+A L PYVKVYLL KK K +TK+ RKTL+P++ + VF V
Sbjct: 31 LEVEVIRARGLVQKPGSKVLPAPYVKVYLLEGKKCIAKKKTKIARKTLDPLYQQQLVFDV 90
Query: 99 SFLNRSEVFEQGVPYADAMNKTLVFAIF-DFDRFSKHDQIGEVKVALCQIDLAQTIEEWR 157
S KTL ++ D+ R K +G ++ L +DL+ + W
Sbjct: 91 SP----------------TGKTLQVIVWGDYGRMDKKVFMGVAQILLDDLDLSNLVIGWY 134
Query: 158 EL 159
+L
Sbjct: 135 KL 136
>gnl|CDD|176067 cd08685, C2_RGS-like, C2 domain of the Regulator Of G-Protein
Signaling (RGS) family. This CD contains members of
the regulator of G-protein signaling (RGS) family. RGS
is a GTPase activating protein which inhibits G-protein
mediated signal transduction. The protein is largely
cytosolic, but G-protein activation leads to
translocation of this protein to the plasma membrane. A
nuclear form of this protein has also been described,
but its sequence has not been identified. There are
multiple alternatively spliced transcript variants in
this family with some members having additional domains
(ex. PDZ and RGS) downstream of the C2 domain. The C2
domain was first identified in PKC. C2 domains fold
into an 8-standed beta-sandwich that can adopt 2
structural arrangements: Type I and Type II,
distinguished by a circular permutation involving their
N- and C-terminal beta strands. Many C2 domains are
Ca2+-dependent membrane-targeting modules that bind a
wide variety of substances including bind
phospholipids, inositol polyphosphates, and
intracellular proteins. Most C2 domain proteins are
either signal transduction enzymes that contain a
single C2 domain, such as protein kinase C, or membrane
trafficking proteins which contain at least two C2
domains, such as synaptotagmin 1. However, there are a
few exceptions to this including RIM isoforms and some
splice variants of piccolo/aczonin and intersectin
which only have a single C2 domain. C2 domains with a
calcium binding region have negatively charged
residues, primarily aspartates, that serve as ligands
for calcium ions.
Length = 119
Score = 49.0 bits (117), Expect = 7e-08
Identities = 24/69 (34%), Positives = 40/69 (57%), Gaps = 3/69 (4%)
Query: 33 LEYDFNANSLSVTVIQAEDLPALDMGGTSDPYVKVYLLPDKKKKFE--TKVHRKTLNPVF 90
L + L++ V++A+ L + + GT + YVK+ L PDK+ +F T + NP+F
Sbjct: 5 LSIEGQNRKLTLHVLEAKGLRSTN-SGTCNSYVKISLSPDKEVRFRQKTSTVPDSANPLF 63
Query: 91 NETFVFKVS 99
+ETF F V+
Sbjct: 64 HETFSFDVN 72
>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 = 48.7 bits (117), Expect = 1e-07
Identities = 33/92 (35%), Positives = 47/92 (51%), Gaps = 11/92 (11%)
Query: 48 QAEDLPALDMGGTSDPYVKVYLLPDKKKKFETKVHRKTLNPVFNETFVFKVSFLNRSEVF 107
QA DL A D G SDP+ +V L + ET+V ++TL+P +++T +F EV
Sbjct: 9 QARDLLAADKSGLSDPFARVSFLNQSQ---ETEVIKETLSPTWDQTLIFD-------EVE 58
Query: 108 EQGVPYADAMNKTLVFA-IFDFDRFSKHDQIG 138
G P A N LV +FD D K + +G
Sbjct: 59 LYGSPEEIAQNPPLVVVELFDQDSVGKDEFLG 90
>gnl|CDD|176010 cd04045, C2C_Tricalbin-like, C2 domain third repeat present in
Tricalbin-like proteins. 5 to 6 copies of the C2
domain are present in Tricalbin, a yeast homolog of
Synaptotagmin, which is involved in membrane
trafficking and sorting. C2 domains fold into an
8-standed beta-sandwich that can adopt 2 structural
arrangements: Type I and Type II, distinguished by a
circular permutation involving their N- and C-terminal
beta strands. Many C2 domains are Ca2+-dependent
membrane-targeting modules that bind a wide variety of
substances including bind phospholipids, inositol
polyphosphates, and intracellular proteins. Most C2
domain proteins are either signal transduction enzymes
that contain a single C2 domain, such as protein kinase
C, or membrane trafficking proteins which contain at
least two C2 domains, such as synaptotagmin 1.
However, there are a few exceptions to this including
RIM isoforms and some splice variants of
piccolo/aczonin and intersectin which only have a
single C2 domain. C2 domains with a calcium binding
region have negatively charged residues, primarily
aspartates, that serve as ligands for calcium ions.
This cd contains the third C2 repeat, C2C, and has a
type-II topology.
Length = 120
Score = 46.8 bits (112), Expect = 4e-07
Identities = 20/53 (37%), Positives = 28/53 (52%), Gaps = 2/53 (3%)
Query: 42 LSVTVIQAEDLPALDMGGTSDPYVKVYLLPDKKKKFETKVHRKTLNPVFNETF 94
L + + +A DL L+ G DPYV+V L + K T TLNPV++E
Sbjct: 3 LRLHIRKANDLKNLEGVGKIDPYVRV--LVNGIVKGRTVTISNTLNPVWDEVL 53
>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 = 46.2 bits (110), Expect = 7e-07
Identities = 34/123 (27%), Positives = 45/123 (36%), Gaps = 31/123 (25%)
Query: 42 LSVTVIQAEDLPALDMGGTSDPYVKVYLLPDKKKKFETKVHRKTL------NPVFNETFV 95
L V +I A+ L D G DPYV + + T+ + + NP +NE F
Sbjct: 3 LEVLLISAKGLQDTDFLGKIDPYVII--------QCRTQERKSKVAKGDGRNPEWNEKFK 54
Query: 96 FKVSFLNRSEVFEQGVPYADAMNKTLVFAIFDFDRFSKHDQIGEVKVALCQIDLAQTIEE 155
F V + + L+ I D D FS D IGE I L EE
Sbjct: 55 FTVEYPGWGGDTK------------LILRIMDKDNFSDDDFIGEAT-----IHLKGLFEE 97
Query: 156 WRE 158
E
Sbjct: 98 GVE 100
>gnl|CDD|176063 cd08681, C2_fungal_Inn1p-like, C2 domain found in fungal Ingression
1 (Inn1) proteins. Saccharomyces cerevisiae Inn1
associates with the contractile actomyosin ring at the
end of mitosis and is needed for cytokinesis. The C2
domain of Inn1, located at the N-terminus, is required
for ingression of the plasma membrane. The C-terminus is
relatively unstructured and contains eight PXXP motifs
that are thought to mediate interaction of Inn1 with
other proteins with SH3 domains in the cytokinesis
proteins Hof1 (an F-BAR protein) and Cyk3 (whose
overexpression can restore primary septum formation in
Inn1Delta cells) as well as recruiting Inn1 to the
bud-neck by binding to Cyk3. Inn1 and Cyk3 appear to
cooperate in activating chitin synthase Chs2 for primary
septum formation, which allows coordination of
actomyosin ring contraction with ingression of the
cleavage furrow. It is thought that the C2 domain of
Inn1 helps to preserve the link between the actomyosin
ring and the plasma membrane, contributing both to
membrane ingression, as well as to stability of the
contracting ring. Additionally, Inn1 might induce
curvature of the plasma membrane adjacent to the
contracting ring, thereby promoting ingression of the
membrane. It has been shown that the C2 domain of human
synaptotagmin induces curvature in target membranes and
thereby contributes to fusion of these membranes with
synaptic vesicles. The C2 domain was first identified in
PKC. C2 domains fold into an 8-standed beta-sandwich
that can adopt 2 structural arrangements: Type I and
Type II, distinguished by a circular permutation
involving their N- and C-terminal beta strands. Many C2
domains are Ca2+-dependent membrane-targeting modules
that bind a wide variety of substances including bind
phospholipids, inositol polyphosphates, and
intracellular proteins. Most C2 domain proteins are
either signal transduction enzymes that contain a single
C2 domain, such as protein kinase C, or membrane
trafficking proteins which contain at least two C2
domains, such as synaptotagmin1. However, there are a
few exceptions to this including RIM isoforms and some
splice variants of piccolo/aczonin and intersectin which
only have a single C2 domain. C2 domains with a calcium
binding region have negatively charged residues,
primarily aspartates, that serve as ligands for calcium
ions.
Length = 118
Score = 45.7 bits (109), Expect = 8e-07
Identities = 35/135 (25%), Positives = 55/135 (40%), Gaps = 30/135 (22%)
Query: 42 LSVTVIQAEDLPALDMGGTSDPYVKVYLLPDKKKKFETKV-HRKTLNPVFNETFVFKVSF 100
L V V++A +LP DPY + + KK TK R +P ++E F+++
Sbjct: 3 LVVVVLKARNLPNKRKLDKQDPYCVLRIGGVTKK---TKTDFRGGQHPEWDEELRFEIT- 58
Query: 101 LNRSEVFEQGVPYADAMNKTLVFAIFDFDRFSKHDQIGEVKVALCQIDLAQTIEE----- 155
+ L A+FD D K D IG+ ++DL+ ++E
Sbjct: 59 --------------EDKKPILKVAVFD-DDKRKPDLIGD-----TEVDLSPALKEGEFDD 98
Query: 156 WRELQSVEGEGGQVY 170
W EL G+VY
Sbjct: 99 WYELTLKGRYAGEVY 113
>gnl|CDD|176013 cd04048, C2A_Copine, C2 domain first repeat in Copine. There are 2
copies of the C2 domain present in copine, a protein
involved in membrane trafficking, protein-protein
interactions, and perhaps even cell division and growth.
C2 domains fold into an 8-standed beta-sandwich that
can adopt 2 structural arrangements: Type I and Type II,
distinguished by a circular permutation involving their
N- and C-terminal beta strands. Many C2 domains are
Ca2+-dependent membrane-targeting modules that bind a
wide variety of substances including bind phospholipids,
inositol polyphosphates, and intracellular proteins.
Most C2 domain proteins are either signal transduction
enzymes that contain a single C2 domain, such as protein
kinase C, or membrane trafficking proteins which contain
at least two C2 domains, such as synaptotagmin 1.
However, there are a few exceptions to this including
RIM isoforms and some splice variants of piccolo/aczonin
and intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. This cd contains the first C2
repeat, C2A, and has a type-I topology.
Length = 120
Score = 45.6 bits (109), Expect = 1e-06
Identities = 30/109 (27%), Positives = 45/109 (41%), Gaps = 23/109 (21%)
Query: 47 IQAEDLPALDMGGTSDPYVKVYLLPDKKKKFE----TKVHRKTLNPVFNETFVFKVSFLN 102
I +L D+ SDP+V VY+ ++ T+V + LNP F TF
Sbjct: 7 ISCRNLLDKDVLSKSDPFVVVYVKTGGSGQWVEIGRTEVIKNNLNPDFVTTFTV------ 60
Query: 103 RSEVFEQGVPYADAMNKTLVFAIFDFD----RFSKHDQIGEVKVALCQI 147
FE+ + L F ++D D S HD +GE + L +I
Sbjct: 61 -DYYFEE--------VQKLRFEVYDVDSKSKDLSDHDFLGEAECTLGEI 100
>gnl|CDD|176016 cd04051, C2_SRC2_like, C2 domain present in Soybean genes Regulated
by Cold 2 (SRC2)-like proteins. SRC2 production is a
response to pathogen infiltration. The initial response
of increased Ca2+ concentrations are coupled to
downstream signal transduction pathways via calcium
binding proteins. SRC2 contains a single C2 domain
which localizes to the plasma membrane and is involved
in Ca2+ dependent protein binding. C2 domains fold into
an 8-standed beta-sandwich that can adopt 2 structural
arrangements: Type I and Type II, distinguished by a
circular permutation involving their N- and C-terminal
beta strands. Many C2 domains are Ca2+-dependent
membrane-targeting modules that bind a wide variety of
substances including bind phospholipids, inositol
polyphosphates, and intracellular proteins. Most C2
domain proteins are either signal transduction enzymes
that contain a single C2 domain, such as protein kinase
C, or membrane trafficking proteins which contain at
least two C2 domains, such as synaptotagmin 1. However,
there are a few exceptions to this including RIM
isoforms and some splice variants of piccolo/aczonin and
intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions.
Length = 125
Score = 44.9 bits (107), Expect = 2e-06
Identities = 33/110 (30%), Positives = 53/110 (48%), Gaps = 18/110 (16%)
Query: 41 SLSVTVIQAEDLPALDMGGTSDPYVKVYLLPDKKKKFETKVHRK--TLNPVFNETFVFKV 98
+L +T+I AEDL +++ G Y V++ P K+ T V R T NP +NET F
Sbjct: 1 TLEITIISAEDLKNVNLFGKMKVYAVVWIDPSHKQS--TPVDRDGGT-NPTWNETLRF-- 55
Query: 99 SFLNRSEVFEQGVPYADAMNKTLVFAIFDFDRFSKHDQ-IGEVKVALCQI 147
L+ + + + L ++ +R S D+ IGEV+V L +
Sbjct: 56 -PLDERLLQQGRL--------ALTIEVYC-ERPSLGDKLIGEVRVPLKDL 95
>gnl|CDD|176018 cd04054, C2A_Rasal1_RasA4, C2 domain first repeat present in RasA1
and RasA4. Rasal1 and RasA4 are both members of GAP1
(GTPase activating protein 1). Rasal1 responds to
repetitive Ca2+ signals by associating with the plasma
membrane and deactivating Ras. RasA4 suppresses Ras
function by enhancing the GTPase activity of Ras
proteins resulting in the inactive GDP-bound form of
Ras. In this way it can control cellular proliferation
and differentiation. Both of these proteins contains
two C2 domains, a Ras-GAP domain, a plextrin homology
(PH)-like domain, and a Bruton's Tyrosine Kinase (BTK)
zinc binding domain. C2 domains fold into an 8-standed
beta-sandwich that can adopt 2 structural arrangements:
Type I and Type II, distinguished by a circular
permutation involving their N- and C-terminal beta
strands. Many C2 domains are Ca2+-dependent
membrane-targeting modules that bind a wide variety of
substances including bind phospholipids, inositol
polyphosphates, and intracellular proteins. Most C2
domain proteins are either signal transduction enzymes
that contain a single C2 domain, such as protein kinase
C, or membrane trafficking proteins which contain at
least two C2 domains, such as synaptotagmin 1. However,
there are a few exceptions to this including RIM
isoforms and some splice variants of piccolo/aczonin and
intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. This cd contains the first C2
repeat, C2A, and has a type-I topology.
Length = 121
Score = 44.8 bits (106), Expect = 2e-06
Identities = 39/134 (29%), Positives = 60/134 (44%), Gaps = 29/134 (21%)
Query: 41 SLSVTVIQAEDLPALDMGGTSDPY--VKVYLLPDKKKKFETKVHRKTLNPVFNETFVFKV 98
SL + +++ ++LPA D+ G+SDPY VKV D + T KTLNP + E + +
Sbjct: 1 SLYIRIVEGKNLPAKDITGSSDPYCIVKV----DNEVIIRTATVWKTLNPFWGEEYTVHL 56
Query: 99 SFLNRSEVFEQGVPYADAMNKTLVFAIFDFDRFSKHDQIGEVKVALCQIDL-AQTIEEWR 157
P T+ F + D D S+ D IG+V + I + I+ W
Sbjct: 57 P------------PGF----HTVSFYVLDEDTLSRDDVIGKVSLTREVISAHPRGIDGWM 100
Query: 158 EL------QSVEGE 165
L + V+GE
Sbjct: 101 NLTEVDPDEEVQGE 114
>gnl|CDD|176041 cd08395, C2C_Munc13, C2 domain third repeat in Munc13 (mammalian
uncoordinated) proteins. C2-like domains are thought to
be involved in phospholipid binding in a Ca2+
independent manner in both Unc13 and Munc13.
Caenorabditis elegans Unc13 has a central domain with
sequence similarity to PKC, which includes C1 and
C2-related domains. Unc13 binds phorbol esters and DAG
with high affinity in a phospholipid manner. Mutations
in Unc13 results in abnormal neuronal connections and
impairment in cholinergic neurotransmission in the
nematode. Munc13 is the mammalian homolog which are
expressed in the brain. There are 3 isoforms (Munc13-1,
-2, -3) and are thought to play a role in
neurotransmitter release and are hypothesized to be
high-affinity receptors for phorbol esters. Unc13 and
Munc13 contain both C1 and C2 domains. There are two C2
related domains present, one central and one at the
carboxyl end. Munc13-1 contains a third C2-like domain.
Munc13 interacts with syntaxin, synaptobrevin, and
synaptotagmin suggesting a role for these as scaffolding
proteins.C2 domains fold into an 8-standed beta-sandwich
that can adopt 2 structural arrangements: Type I and
Type II, distinguished by a circular permutation
involving their N- and C-terminal beta strands. Many C2
domains are Ca2+-dependent membrane-targeting modules
that bind a wide variety of substances including bind
phospholipids, inositol polyphosphates, and
intracellular proteins. Most C2 domain proteins are
either signal transduction enzymes that contain a single
C2 domain, such as protein kinase C, or membrane
trafficking proteins which contain at least two C2
domains, such as synaptotagmin 1. However, there are a
few exceptions to this including RIM isoforms and some
splice variants of piccolo/aczonin and intersectin which
only have a single C2 domain. C2 domains with a calcium
binding region have negatively charged residues,
primarily aspartates, that serve as ligands for calcium
ions. This cd contains the third C2 repeat, C2C, and
has a type-II topology.
Length = 120
Score = 44.7 bits (106), Expect = 2e-06
Identities = 26/71 (36%), Positives = 37/71 (52%), Gaps = 5/71 (7%)
Query: 42 LSVTVIQAEDLPALDMGGTSDPYVKVYL----LPDKKKKFETKVHRKTLNPVFNETFVFK 97
++V V+ A DL G P+V+V L L DKK+KF TK +P +NETF F
Sbjct: 2 VTVKVVAANDL-KWQTTGMFRPFVEVNLIGPHLSDKKRKFATKSKNNNWSPKYNETFQFI 60
Query: 98 VSFLNRSEVFE 108
+ + E +E
Sbjct: 61 LGNEDDPESYE 71
>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 = 44.4 bits (105), Expect = 3e-06
Identities = 36/124 (29%), Positives = 57/124 (45%), Gaps = 15/124 (12%)
Query: 43 SVTVIQAEDLPALDMGGTSDPYVKVYLLPDKKKKFETKVHRKTLNPVFNETFVFKVSFLN 102
VTV+QA L GT+D YV + L K+K+ T V KT +PV+ E F++ L
Sbjct: 2 QVTVLQARGLLCKGKSGTNDAYVIIQL---GKEKYSTSVKEKTTSPVWKEECSFELPGLL 58
Query: 103 RSEVFEQGVPYADAMNKTLVFAIFDFDRFSKHDQIGEVKVALCQIDLAQTIE--EWRELQ 160
S + M++ L+ D+F +G+V + L +D + W +L+
Sbjct: 59 -SGNGNRATLQLTVMHRNLLG----LDKF-----LGQVSIPLNDLDEDKGRRRTRWFKLE 108
Query: 161 SVEG 164
S G
Sbjct: 109 SKPG 112
>gnl|CDD|176054 cd08409, C2B_Synaptotagmin-15, C2 domain second repeat present in
Synaptotagmin 15. Synaptotagmin is a
membrane-trafficking protein characterized by a
N-terminal transmembrane region, a linker, and 2
C-terminal C2 domains. It is thought to be involved in
the trafficking and exocytosis of secretory vesicles in
non-neuronal tissues and is Ca2+ independent. Human
synaptotagmin 15 has 2 alternatively spliced forms that
encode proteins with different C-termini. The larger,
SYT15a, contains a N-terminal TM region, a putative
fatty-acylation site, and 2 tandem C terminal C2
domains. The smaller, SYT15b, lacks the C-terminal
portion of the second C2 domain. Unlike most other
synaptotagmins it is nearly absent in the brain and
rather is found in the heart, lungs, skeletal muscle,
and testis. Previously all synaptotagmins were thought
to be calcium sensors in the regulation of
neurotransmitter release and hormone secretion, but it
has been shown that not all of them bind calcium. Of
the 17 identified synaptotagmins only 8 bind calcium
(1-3, 5-7, 9, 10). The function of the two C2 domains
that bind calcium are: regulating the fusion step of
synaptic vesicle exocytosis (C2A) and binding to
phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the
absence of calcium ions and to phosphatidylinositol
bisphosphate (PIP2) in their presence (C2B). C2B also
regulates also the recycling step of synaptic vesicles.
C2 domains fold into an 8-standed beta-sandwich that
can adopt 2 structural arrangements: Type I and Type
II, distinguished by a circular permutation involving
their N- and C-terminal beta strands. Many C2 domains
are Ca2+-dependent membrane-targeting modules that bind
a wide variety of substances including bind
phospholipids, inositol polyphosphates, and
intracellular proteins. Most C2 domain proteins are
either signal transduction enzymes that contain a
single C2 domain, such as protein kinase C, or membrane
trafficking proteins which contain at least two C2
domains, such as synaptotagmin 1. However, there are a
few exceptions to this including RIM isoforms and some
splice variants of piccolo/aczonin and intersectin
which only have a single C2 domain. C2 domains with a
calcium binding region have negatively charged
residues, primarily aspartates, that serve as ligands
for calcium ions. This cd contains the second C2
repeat, C2B, and has a type-I topology.
Length = 137
Score = 44.2 bits (105), Expect = 5e-06
Identities = 28/68 (41%), Positives = 37/68 (54%), Gaps = 3/68 (4%)
Query: 33 LEYDFNANSLSVTVIQAEDLPALDMGGTSDPYVKVYLLPDKK--KKFETKVHRKTLNPVF 90
L Y+ N L+V V++A L LD T YVKV L+ K K +T+V +P F
Sbjct: 8 LTYNPTLNRLTVVVLRARGLRQLDHAHT-SVYVKVSLMIHNKVVKTKKTEVVDGAASPSF 66
Query: 91 NETFVFKV 98
NE+F FKV
Sbjct: 67 NESFSFKV 74
>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 = 43.7 bits (104), Expect = 5e-06
Identities = 33/112 (29%), Positives = 48/112 (42%), Gaps = 25/112 (22%)
Query: 42 LSVTVIQAEDLPALD-MGGTSDPYVKVYLLPDKKKKFE-TKVHRKTLNPVFNETFVFKVS 99
L+VT+ A L D +GGT DPYV + +++ TKV + T NPV+NET V+
Sbjct: 4 LAVTIKSARGLKGSDIIGGTVDPYVTFSI--SNRRELARTKVKKDTSNPVWNETKYILVN 61
Query: 100 FLNRSEVFEQGVPYADAMNKTLVFAIFDFDRFSKHDQIGEVKVALCQIDLAQ 151
L L ++DF+ K IG + DL+
Sbjct: 62 SLTEP----------------LNLTVYDFNDKRKDKLIGTA-----EFDLSS 92
>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 = 44.2 bits (105), Expect = 6e-06
Identities = 30/112 (26%), Positives = 43/112 (38%), Gaps = 31/112 (27%)
Query: 41 SLSVTVIQAEDLPALD---MGGT-----------SDPYVKVYLLPDKKKKFETKVHRKTL 86
+ +AEDLP +D M DPYV+V +K +T V + +
Sbjct: 1 RFIFKIYRAEDLPQMDSGIMANVKKAFLGEKKELVDPYVEVSFA---GQKVKTSVKKNSY 57
Query: 87 NPVFNETFVFKVSFLNRSEVFEQGVPYADAMNKTLVFAIFDFDRFSKHDQIG 138
NP +NE VF F P + + + I D+DR D IG
Sbjct: 58 NPEWNEQIVFPEMF-----------P---PLCERIKIQIRDWDRVGNDDVIG 95
>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 = 43.5 bits (103), Expect = 7e-06
Identities = 33/104 (31%), Positives = 46/104 (44%), Gaps = 20/104 (19%)
Query: 42 LSVTVIQAEDLPALDMGGTSDPYVKVYLLPDKKKKFETKVHRKTLNPVFNETFVFKVSFL 101
L V +++ DL + G SDPY +V + + K TKV TLNP +N + F V
Sbjct: 17 LMVVIVEGRDLKPCNSNGKSDPYCEVSMGSQEHK---TKVVSDTLNPKWNSSMQFFVK-- 71
Query: 102 NRSEVFEQGVPYADAMNKTLVFAIFDFDRFSKHDQIG--EVKVA 143
D L +FD D FS D +G E++VA
Sbjct: 72 -------------DLEQDVLCITVFDRDFFSPDDFLGRTEIRVA 102
>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 = 43.0 bits (102), Expect = 8e-06
Identities = 27/116 (23%), Positives = 44/116 (37%), Gaps = 21/116 (18%)
Query: 56 DMGGTSDPYVKVYLLPDKKKKFETKVHRKTLNPVFNETFVFKVSFLNRSEVFEQGVPYAD 115
G PY ++YL + K + T+V +KT NP +N + E V D
Sbjct: 8 SKTGLLSPYAELYL--NGKLVYTTRVKKKTNNPSWNAST----------EFL---VT--D 50
Query: 116 AMNKTLVFAIFDFDRFSKHDQIGEVKVALCQ-IDLAQTIEEWRELQSVEGEGGQVY 170
+ + D DR +G V ++L ID ++W L G++
Sbjct: 51 RRKSRVTVVVKD-DRDRHDPVLGSVSISLNDLIDATSVGQQWFPLSGN--GQGRIR 103
>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 = 42.9 bits (102), Expect = 8e-06
Identities = 26/122 (21%), Positives = 48/122 (39%), Gaps = 23/122 (18%)
Query: 42 LSVTVIQAEDLPALDMGGTSDPYVKVYLLPDKKKKFETKVHRKTLNPVFNETFVFKVSFL 101
L V + A++LP PYV++ + +K +KV +T NPV+ E F F V
Sbjct: 2 LFVYLDSAKNLPLAKSTKEPSPYVEL-TVGKTTQK--SKVKERTNNPVWEEGFTFLVR-- 56
Query: 102 NRSEVFEQGVPYADAMNKTLVFAIFDFDRFSKHDQIGEVKVALCQIDLAQ--TIEEWREL 159
+ N+ L + D +G + + L ++ T+++ L
Sbjct: 57 -------------NPENQELEIEVKDDKTGK---SLGSLTLPLSELLKEPDLTLDQPFPL 100
Query: 160 QS 161
+
Sbjct: 101 DN 102
>gnl|CDD|176045 cd08400, C2_Ras_p21A1, C2 domain present in RAS p21 protein
activator 1 (RasA1). RasA1 is a GAP1 (GTPase activating
protein 1), a Ras-specific GAP member, which suppresses
Ras function by enhancing the GTPase activity of Ras
proteins resulting in the inactive GDP-bound form of
Ras. In this way it can control cellular proliferation
and differentiation. RasA1 contains a C2 domain, a
Ras-GAP domain, a pleckstrin homology (PH)-like domain,
a SH3 domain, and 2 SH2 domains. C2 domains fold into an
8-standed beta-sandwich that can adopt 2 structural
arrangements: Type I and Type II, distinguished by a
circular permutation involving their N- and C-terminal
beta strands. Many C2 domains are Ca2+-dependent
membrane-targeting modules that bind a wide variety of
substances including bind phospholipids, inositol
polyphosphates, and intracellular proteins. Most C2
domain proteins are either signal transduction enzymes
that contain a single C2 domain, such as protein kinase
C, or membrane trafficking proteins which contain at
least two C2 domains, such as synaptotagmin 1. However,
there are a few exceptions to this including RIM
isoforms and some splice variants of piccolo/aczonin and
intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. Members here have a type-I
topology.
Length = 126
Score = 41.6 bits (98), Expect = 3e-05
Identities = 36/121 (29%), Positives = 52/121 (42%), Gaps = 21/121 (17%)
Query: 41 SLSVTVIQAEDLPALDMGGTSDPYVKVYLLPDKKKKFETKVHRKTLNPVFNETFVFKVSF 100
SL + V++A LP + PY + L ++ K TKV R+ NPV++E FVF
Sbjct: 5 SLQLNVLEAHKLP---VKHVPHPYCVISL--NEVKVARTKV-REGPNPVWSEEFVFD-DL 57
Query: 101 LNRSEVFEQGVPYADAMNKTLVFAIFDFDRFSKHDQIGEVKVALCQIDLAQTIEEWRELQ 160
F + NK + SK +I EV V L ++ Q +EW L
Sbjct: 58 PPDVNSFTISL-----SNKA---------KRSKDSEIAEVTVQLSKLQNGQETDEWYPLS 103
Query: 161 S 161
S
Sbjct: 104 S 104
>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 = 40.7 bits (96), Expect = 7e-05
Identities = 30/103 (29%), Positives = 46/103 (44%), Gaps = 18/103 (17%)
Query: 45 TVIQAEDLPALDMGGTSDPYVKVYLLPDKKKKFETKVHRKTLNPVFNETFVFKVSFLNRS 104
V+ ++LP L G D KV KKK T+V LNPV+NETF + ++
Sbjct: 1 LVVSLKNLPGL--KGKGDRIAKVTFRGVKKK---TRVLENELNPVWNETFEWPLA----- 50
Query: 105 EVFEQGVPYADAMNKTLVFAIFDFDRFSKHDQIGEVKVALCQI 147
G P D L + D+++ ++ IG V+L +
Sbjct: 51 -----GSPDPDES---LEIVVKDYEKVGRNRLIGSATVSLQDL 85
>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 = 40.4 bits (95), Expect = 8e-05
Identities = 29/98 (29%), Positives = 50/98 (51%), Gaps = 13/98 (13%)
Query: 42 LSVTVIQAEDLPALDMGGTSDPYVKVYLLPDKKKKFETKVHRKTLNPVFNETFVFKVSFL 101
L V I+A L + G+S+PY V + + +K+++ + T NP ++E F+F++S
Sbjct: 1 LLVKNIKANGL--SEAAGSSNPYC-VLEMDEPPQKYQSSTQKNTSNPFWDEHFLFELS-- 55
Query: 102 NRS-----EVFEQGVPYADAMNKTLVFAIFDFDRFSKH 134
S EV++ G + +K L AI FD K+
Sbjct: 56 PNSKELLFEVYDNGKK---SDSKFLGLAIVPFDELRKN 90
>gnl|CDD|175986 cd04019, C2C_MCTP_PRT_plant, C2 domain third repeat found in
Multiple C2 domain and Transmembrane region Proteins
(MCTP); plant subset. MCTPs are involved in Ca2+
signaling at the membrane. Plant-MCTPs are composed of
a variable N-terminal sequence, four C2 domains, two
transmembrane regions (TMRs), and a short C-terminal
sequence. It is one of four protein classes that are
anchored to membranes via a transmembrane region; the
others being synaptotagmins, extended synaptotagmins,
and ferlins. MCTPs are the only membrane-bound C2 domain
proteins that contain two functional TMRs. MCTPs are
unique in that they bind Ca2+ but not phospholipids. C2
domains fold into an 8-standed beta-sandwich that can
adopt 2 structural arrangements: Type I and Type II,
distinguished by a circular permutation involving their
N- and C-terminal beta strands. Many C2 domains are
Ca2+-dependent membrane-targeting modules that bind a
wide variety of substances including bind phospholipids,
inositol polyphosphates, and intracellular proteins.
Most C2 domain proteins are either signal transduction
enzymes that contain a single C2 domain, such as protein
kinase C, or membrane trafficking proteins which contain
at least two C2 domains, such as synaptotagmin 1.
However, there are a few exceptions to this including
RIM isoforms and some splice variants of piccolo/aczonin
and intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. This cd contains the third C2
repeat, C2C, and has a type-II topology.
Length = 150
Score = 40.7 bits (96), Expect = 1e-04
Identities = 21/68 (30%), Positives = 31/68 (45%), Gaps = 9/68 (13%)
Query: 42 LSVTVIQAEDLPALDMGGTSDPYVKVYLLPDKKKKFETKV-HRKTLNPVFNETFVFKVSF 100
L VTVI+A+DL D + +VK L + T+ + NP +NE +F
Sbjct: 2 LRVTVIEAQDLVPSDKNRVPEVFVKAQLGN---QVLRTRPSQTRNGNPSWNEELMFVA-- 56
Query: 101 LNRSEVFE 108
+E FE
Sbjct: 57 ---AEPFE 61
>gnl|CDD|176046 cd08401, C2A_RasA2_RasA3, C2 domain first repeat present in RasA2
and RasA3. RasA2 and RasA3 are GAP1s (GTPase activating
protein 1s ), Ras-specific GAP members, which suppresses
Ras function by enhancing the GTPase activity of Ras
proteins resulting in the inactive GDP-bound form of
Ras. In this way it can control cellular proliferation
and differentiation. RasA2 and RasA3 are both inositol
1,3,4,5-tetrakisphosphate-binding proteins and contain
an N-terminal C2 domain, a Ras-GAP domain, a
pleckstrin-homology (PH) domain which localizes it to
the plasma membrane, and Bruton's Tyrosine Kinase (BTK)
a zinc binding domain. C2 domains fold into an 8-standed
beta-sandwich that can adopt 2 structural arrangements:
Type I and Type II, distinguished by a circular
permutation involving their N- and C-terminal beta
strands. Many C2 domains are Ca2+-dependent
membrane-targeting modules that bind a wide variety of
substances including bind phospholipids, inositol
polyphosphates, and intracellular proteins. Most C2
domain proteins are either signal transduction enzymes
that contain a single C2 domain, such as protein kinase
C, or membrane trafficking proteins which contain at
least two C2 domains, such as synaptotagmin 1. However,
there are a few exceptions to this including RIM
isoforms and some splice variants of piccolo/aczonin and
intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. This cd contains the first C2
repeat, C2A, and has a type-I topology.
Length = 121
Score = 40.1 bits (94), Expect = 1e-04
Identities = 37/126 (29%), Positives = 54/126 (42%), Gaps = 23/126 (18%)
Query: 41 SLSVTVIQAEDLPALD-MGGTSDPYVKVYLLPDKKKKFETKVHRKTLNPVFNETFVFKVS 99
SL + + +A++LP D Y V L D+++ F TK K+L P F E F F++
Sbjct: 1 SLKIKIGEAKNLPPRSGPNKMRDCYCTVNL--DQEEVFRTKTVEKSLCPFFGEDFYFEIP 58
Query: 100 FLNRSEVFEQGVPYADAMNKTLVFAIFDFDRFSKHDQIGEVKVALCQIDLA--QTIEEWR 157
R L F I+D D + IG KVA+ + DL + W
Sbjct: 59 RTFRH----------------LSFYIYDRDVLRRDSVIG--KVAIKKEDLHKYYGKDTWF 100
Query: 158 ELQSVE 163
LQ V+
Sbjct: 101 PLQPVD 106
>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 = 37.7 bits (88), Expect = 7e-04
Identities = 24/96 (25%), Positives = 41/96 (42%), Gaps = 19/96 (19%)
Query: 41 SLSVTVIQAEDLPALDMGGTSDPYVKVYLLPDKKKKFETKVHRKTLNPVFNETFVFKVSF 100
+ +TV+ A+ L D+ DP+ + + D + T V +KTL+P +NE F
Sbjct: 1 KVRLTVLCADGLAKRDLFRLPDPFAVITV--DGGQTHSTDVAKKTLDPKWNEHFDL---T 55
Query: 101 LNRSEVFEQGVPYADAMNKTLVFAIFDFDRFSKHDQ 136
+ S + + +FD +F K DQ
Sbjct: 56 VGPSSI--------------ITIQVFDQKKFKKKDQ 77
>gnl|CDD|176059 cd08677, C2A_Synaptotagmin-13, C2 domain. Synaptotagmin is a
membrane-trafficking protein characterized by a
N-terminal transmembrane region, a linker, and 2
C-terminal C2 domains. Synaptotagmin 13, a member of
class 6 synaptotagmins, is located in the brain. It
functions are unknown. It, like synaptotagmins 8 and 12,
does not have any consensus Ca2+ binding sites.
Previously all synaptotagmins were thought to be calcium
sensors in the regulation of neurotransmitter release
and hormone secretion, but it has been shown that not
all of them bind calcium. Of the 17 identified
synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10).
The function of the two C2 domains that bind calcium
are: regulating the fusion step of synaptic vesicle
exocytosis (C2A) and binding to
phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the
absence of calcium ions and to phosphatidylinositol
bisphosphate (PIP2) in their presence (C2B). C2B also
regulates also the recycling step of synaptic vesicles.
C2 domains fold into an 8-standed beta-sandwich that can
adopt 2 structural arrangements: Type I and Type II,
distinguished by a circular permutation involving their
N- and C-terminal beta strands. Many C2 domains are
Ca2+-dependent membrane-targeting modules that bind a
wide variety of substances including bind phospholipids,
inositol polyphosphates, and intracellular proteins.
Most C2 domain proteins are either signal transduction
enzymes that contain a single C2 domain, such as protein
kinase C, or membrane trafficking proteins which contain
at least two C2 domains, such as synaptotagmin 1.
However, there are a few exceptions to this including
RIM isoforms and some splice variants of piccolo/aczonin
and intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. This CD contains the first C2
repeat, C2A, and has a type-I topology.
Length = 118
Score = 36.8 bits (85), Expect = 0.001
Identities = 27/129 (20%), Positives = 57/129 (44%), Gaps = 17/129 (13%)
Query: 32 TLEYDFNANSLSVTVIQAEDLPALDMGGTSDPYVKVYLL-PDKKKKFETKVHRKTLNPVF 90
+L YD L V +++AE++ + + Y+ + + +K+ +T + + L+ +
Sbjct: 6 SLSYDKQKAELHVNILEAENI---SVDAGCECYISGCVSVSEGQKEAQTALKKLALHTQW 62
Query: 91 NETFVFKVSFLNRSEVFEQGVPYADAMNKTLVFAIFDFDRFSKHDQIGEVKVALCQIDLA 150
E VF + E+ TL + DRFS+H +GE+++ L + +
Sbjct: 63 EEELVFPLP--------EEESLDG-----TLTLTLRCCDRFSRHSTLGELRLKLADVSMM 109
Query: 151 QTIEEWREL 159
+W +L
Sbjct: 110 LGAAQWVDL 118
>gnl|CDD|176073 cd08691, C2_NEDL1-like, C2 domain present in NEDL1 (NEDD4-like
ubiquitin protein ligase-1). NEDL1 (AKA HECW1(HECT,
C2 and WW domain containing E3 ubiquitin protein ligase
1)) is a newly identified HECT-type E3 ubiquitin
protein ligase highly expressed in favorable
neuroblastomas. In vertebrates it is found primarily in
neuronal tissues, including the spinal cord. NEDL1 is
thought to normally function in the quality control of
cellular proteins by eliminating misfolded proteins.
This is thought to be accomplished via a mechanism
analogous to that of ER-associated degradation by
forming tight complexes and aggregating misfolded
proteins that have escaped ubiquitin-mediated
degradation. NEDL1, is composed of a C2 domain, two WW
domains, and a ubiquitin ligase Hect domain. C2 domains
fold into an 8-standed beta-sandwich that can adopt 2
structural arrangements: Type I and Type II,
distinguished by a circular permutation involving their
N- and C-terminal beta strands. Many C2 domains are
Ca2+-dependent membrane-targeting modules that bind a
wide variety of substances including bind
phospholipids, inositol polyphosphates, and
intracellular proteins. Most C2 domain proteins are
either signal transduction enzymes that contain a
single C2 domain, such as protein kinase C, or membrane
trafficking proteins which contain at least two C2
domains, such as synaptotagmin 1. However, there are a
few exceptions to this including RIM isoforms and some
splice variants of piccolo/aczonin and intersectin
which only have a single C2 domain. C2 domains with a
calcium binding region have negatively charged
residues, primarily aspartates, that serve as ligands
for calcium ions.
Length = 137
Score = 35.8 bits (83), Expect = 0.004
Identities = 23/67 (34%), Positives = 32/67 (47%), Gaps = 12/67 (17%)
Query: 41 SLSVTVIQAEDLPALDMGGTSDPYVKVYLLPDKKKKFETKVHRK----------TLNPVF 90
S S++ +QA +L M DPYVK+ + P K+ F H T+NPV+
Sbjct: 2 SFSLSGLQARNLKK-GMFFNPDPYVKISIQPGKRHIFPALPHHGQECRTSIVENTINPVW 60
Query: 91 -NETFVF 96
E FVF
Sbjct: 61 HREQFVF 67
>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 = 34.6 bits (80), Expect = 0.010
Identities = 21/55 (38%), Positives = 29/55 (52%), Gaps = 7/55 (12%)
Query: 42 LSVTVIQAEDLPALDMGGTSDPYVKVYLLPDKKKKFETKVHRKTLNPVFNETFVF 96
L V V++A LPA ++DP V+V L K TK +T NP +N+ F F
Sbjct: 2 LYVRVVKARGLPA----NSNDPVVEVKLGNYKGS---TKAIERTSNPEWNQVFAF 49
>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 = 34.2 bits (79), Expect = 0.014
Identities = 27/100 (27%), Positives = 43/100 (43%), Gaps = 22/100 (22%)
Query: 61 SDPYVKVYLLPDKKKKFETKVHRKTLN--PVFNETFVF--------------KVSFLNRS 104
SD YVK +L ++ K +T VH ++L+ FN FVF K
Sbjct: 25 SDIYVKGWLDGLEEDKQKTDVHYRSLDGEGNFNWRFVFPFDYLPAEKKIVVIKKEHFWSL 84
Query: 105 EVFEQGVPYADAMNKTLVFAIFDFDRFSKHDQIGEVKVAL 144
+ E +P L ++D D+FS D +G +++ L
Sbjct: 85 DETEYKIPPK------LTLQVWDNDKFSPDDFLGSLELDL 118
>gnl|CDD|176052 cd08407, C2B_Synaptotagmin-13, C2 domain second repeat present in
Synaptotagmin 13. Synaptotagmin is a
membrane-trafficking protein characterized by a
N-terminal transmembrane region, a linker, and 2
C-terminal C2 domains. Synaptotagmin 13, a member of
class 6 synaptotagmins, is located in the brain. It
functions are unknown. It, like synaptotagmins 8 and
12, does not have any consensus Ca2+ binding sites.
Previously all synaptotagmins were thought to be
calcium sensors in the regulation of neurotransmitter
release and hormone secretion, but it has been shown
that not all of them bind calcium. Of the 17
identified synaptotagmins only 8 bind calcium (1-3,
5-7, 9, 10). The function of the two C2 domains that
bind calcium are: regulating the fusion step of
synaptic vesicle exocytosis (C2A) and binding to
phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the
absence of calcium ions and to phosphatidylinositol
bisphosphate (PIP2) in their presence (C2B). C2B also
regulates also the recycling step of synaptic vesicles.
C2 domains fold into an 8-standed beta-sandwich that
can adopt 2 structural arrangements: Type I and Type
II, distinguished by a circular permutation involving
their N- and C-terminal beta strands. Many C2 domains
are Ca2+-dependent membrane-targeting modules that bind
a wide variety of substances including bind
phospholipids, inositol polyphosphates, and
intracellular proteins. Most C2 domain proteins are
either signal transduction enzymes that contain a
single C2 domain, such as protein kinase C, or membrane
trafficking proteins which contain at least two C2
domains, such as synaptotagmin 1. However, there are a
few exceptions to this including RIM isoforms and some
splice variants of piccolo/aczonin and intersectin
which only have a single C2 domain. C2 domains with a
calcium binding region have negatively charged
residues, primarily aspartates, that serve as ligands
for calcium ions. This cd contains the second C2
repeat, C2B, and has a type-I topology.
Length = 138
Score = 32.6 bits (74), Expect = 0.057
Identities = 26/71 (36%), Positives = 40/71 (56%), Gaps = 4/71 (5%)
Query: 32 TLEYDFNANSLSVTVIQAEDLPA--LDMGGTSDPYVKVYLLPD--KKKKFETKVHRKTLN 87
++ Y AN L V VI+A++L + L + D VKV L K KK +TK + +N
Sbjct: 7 SISYLPAANRLLVVVIKAKNLHSDQLKLLLGIDVSVKVTLKHQNAKLKKKQTKRAKHKIN 66
Query: 88 PVFNETFVFKV 98
PV+NE +F++
Sbjct: 67 PVWNEMIMFEL 77
>gnl|CDD|175981 cd04014, C2_PKC_epsilon, C2 domain in Protein Kinase C (PKC)
epsilon. A single C2 domain is found in PKC epsilon.
The PKC family of serine/threonine kinases regulates
apoptosis, proliferation, migration, motility,
chemo-resistance, and differentiation. There are 3
groups: group 1 (alpha, betaI, beta II, gamma) which
require phospholipids and calcium, group 2 (delta,
epsilon, theta, eta) which do not require calcium for
activation, and group 3 (xi, iota/lambda) which are
atypical and can be activated in the absence of
diacylglycerol and calcium. C2 domains fold into an
8-standed beta-sandwich that can adopt 2 structural
arrangements: Type I and Type II, distinguished by a
circular permutation involving their N- and C-terminal
beta strands. Many C2 domains are Ca2+-dependent
membrane-targeting modules that bind a wide variety of
substances including bind phospholipids, inositol
polyphosphates, and intracellular proteins. Most C2
domain proteins are either signal transduction enzymes
that contain a single C2 domain, such as protein kinase
C, or membrane trafficking proteins which contain at
least two C2 domains, such as synaptotagmin 1.
However, there are a few exceptions to this including
RIM isoforms and some splice variants of
piccolo/aczonin and intersectin which only have a
single C2 domain. C2 domains with a calcium binding
region have negatively charged residues, primarily
aspartates, that serve as ligands for calcium ions.
Members here have a type-II topology.
Length = 132
Score = 31.9 bits (73), Expect = 0.096
Identities = 19/69 (27%), Positives = 30/69 (43%), Gaps = 12/69 (17%)
Query: 41 SLSVTVIQAEDLPALD------MGGTS----DPYVKVYLLPDKKKKFETKVHRKTLNPVF 90
+L + + +A DL D + DPYV + + D +T KT +PV+
Sbjct: 5 TLKIKICEAVDLKPTDWSTRHAVPKKGSQLLDPYVSIDV--DDTHIGKTSTKPKTNSPVW 62
Query: 91 NETFVFKVS 99
NE F +V
Sbjct: 63 NEEFTTEVH 71
>gnl|CDD|175982 cd04015, C2_plant_PLD, C2 domain present in plant phospholipase D
(PLD). PLD hydrolyzes terminal phosphodiester bonds in
diester glycerophospholipids resulting in the
degradation of phospholipids. In vitro PLD transfers
phosphatidic acid to primary alcohols. In plants PLD
plays a role in germination, seedling growth,
phosphatidylinositol metabolism, and changes in
phospholipid composition. There is a single
Ca(2+)/phospholipid-binding C2 domain in PLD. C2
domains fold into an 8-standed beta-sandwich that can
adopt 2 structural arrangements: Type I and Type II,
distinguished by a circular permutation involving their
N- and C-terminal beta strands. Many C2 domains are
Ca2+-dependent membrane-targeting modules that bind a
wide variety of substances including bind
phospholipids, inositol polyphosphates, and
intracellular proteins. Most C2 domain proteins are
either signal transduction enzymes that contain a
single C2 domain, such as protein kinase C, or membrane
trafficking proteins which contain at least two C2
domains, such as synaptotagmin 1. However, there are a
few exceptions to this including RIM isoforms and some
splice variants of piccolo/aczonin and intersectin
which only have a single C2 domain. C2 domains with a
calcium binding region have negatively charged
residues, primarily aspartates, that serve as ligands
for calcium ions.
Length = 158
Score = 30.4 bits (69), Expect = 0.36
Identities = 23/84 (27%), Positives = 34/84 (40%), Gaps = 32/84 (38%)
Query: 41 SLSVTVIQAEDLPALDM------------------------------GGTSDPYVKVYLL 70
+L VT+ +A++LP +DM TSDPY V L
Sbjct: 8 TLDVTIYEADNLPNMDMFSEKLRRFFSKLVGCSEPTLKRPSSHRHVGKITSDPYATVDL- 66
Query: 71 PDKKKKFETKVHRKTLNPVFNETF 94
+ T+V + NPV+NE+F
Sbjct: 67 -AGARVARTRVIENSENPVWNESF 89
>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 = 29.9 bits (68), Expect = 0.38
Identities = 28/107 (26%), Positives = 42/107 (39%), Gaps = 20/107 (18%)
Query: 41 SLSVTVIQAEDLPALDMGGTSDPYVKVYLLPDKKKKFETKVHRKTLNPVFNETFVFKVSF 100
L +TV A+ DPYV+V D + +T+V +KT NP +NE F V+
Sbjct: 3 QLQITVESAKLKSNSKSFKP-DPYVEV--TVDGQPPKKTEVSKKTSNPKWNEHFTVLVT- 58
Query: 101 LNRSEVFEQGVPYADAMNKTLVFAIFDFDRFSKHDQIGEVKVALCQI 147
P + TL F ++ +GE + L I
Sbjct: 59 -----------PQS-----TLEFKVWSHHTLKADVLLGEASLDLSDI 89
>gnl|CDD|226068 COG3538, COG3538, Uncharacterized conserved protein [Function
unknown].
Length = 434
Score = 30.5 bits (69), Expect = 0.66
Identities = 16/51 (31%), Positives = 22/51 (43%), Gaps = 6/51 (11%)
Query: 112 PYADAMNKTLVFAIFDFDRFSKHDQIGEVKV---ALCQ-IDLAQTIEEWRE 158
PYA+A N+T A D + + E K +LC I LA W+
Sbjct: 102 PYANAFNETANGAGHQTDHTEMNPWVWERKYEIDSLCYPIQLAYLY--WKA 150
>gnl|CDD|182589 PRK10614, PRK10614, multidrug efflux system subunit MdtC;
Provisional.
Length = 1025
Score = 30.5 bits (69), Expect = 0.68
Identities = 20/64 (31%), Positives = 31/64 (48%), Gaps = 11/64 (17%)
Query: 18 KVLLTDLPI---------FKPEQTLEYDFNANSLSVTVIQAEDLPALDMGGTSDPYVKVY 68
K +D PI + Q YDF + L+ T+ Q + + +D+GG+S P V+V
Sbjct: 131 KANPSDAPIMILTLTSDTYSQGQL--YDFASTQLAQTISQIDGVGDVDVGGSSLPAVRVG 188
Query: 69 LLPD 72
L P
Sbjct: 189 LNPQ 192
>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 = 29.2 bits (66), Expect = 0.85
Identities = 16/70 (22%), Positives = 35/70 (50%), Gaps = 6/70 (8%)
Query: 40 NSLSVTVIQAEDLPALDMGGTSD--PYVKVYLLP---DKKKKFETKVHRKTLNPVFNETF 94
+S+ +T+++ +P D YVK + P ++ + +T + T +P +NE+F
Sbjct: 2 SSIELTIVRCIGIPLPSGWNPKDLDTYVK-FEFPYPNEEPQSGKTSTIKDTNSPEYNESF 60
Query: 95 VFKVSFLNRS 104
++ +RS
Sbjct: 61 KLNINRKHRS 70
>gnl|CDD|176068 cd08686, C2_ABR, C2 domain in the Active BCR (Breakpoint cluster
region) Related protein. The ABR protein is similar to
the breakpoint cluster region protein. It has homology
to guanine nucleotide exchange proteins and
GTPase-activating proteins (GAPs). ABR is expressed
primarily in the brain, but also includes non-neuronal
tissues such as the heart. It has been associated with
human diseases such as Miller-Dieker syndrome in which
mental retardation and malformations of the heart are
present. ABR contains a RhoGEF domain and a PH-like
domain upstream of its C2 domain and a RhoGAP domain
downstream of this domain. A few members also contain
a Bcr-Abl oncoprotein oligomerization domain at the
very N-terminal end. Splice variants of ABR have been
identified. ABR is found in a wide variety of organisms
including chimpanzee, dog, mouse, rat, fruit fly, and
mosquito. 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 = 118
Score = 27.9 bits (62), Expect = 1.8
Identities = 10/24 (41%), Positives = 15/24 (62%)
Query: 75 KKFETKVHRKTLNPVFNETFVFKV 98
KK +T+V R T P +NE F ++
Sbjct: 31 KKAKTRVCRDTTEPNWNEEFEIEL 54
>gnl|CDD|238127 cd00209, DHFR, Dihydrofolate reductase (DHFR). Reduces
7,8-dihydrofolate to 5,6,7,8-tetrahydrofolate with NADPH
as a cofactor. This is an essential step in the
biosynthesis of deoxythymidine phosphate since
5,6,7,8-tetrahydrofolate is required to regenerate
5,10-methylenetetrahydrofolate which is then utilized by
thymidylate synthase. Inhibition of DHFR interrupts
thymidilate synthesis and DNA replication, inhibitors of
DHFR (such as Methotrexate) are used in cancer
chemotherapy. 5,6,7,8-tetrahydrofolate also is involved
in glycine, serine, and threonine metabolism and
aminoacyl-tRNA biosynthesis.
Length = 158
Score = 27.5 bits (62), Expect = 4.0
Identities = 11/28 (39%), Positives = 19/28 (67%)
Query: 104 SEVFEQGVPYADAMNKTLVFAIFDFDRF 131
+E+++Q +PYAD + T + A F+ D F
Sbjct: 100 AEIYKQALPYADRLYLTRIHAEFEGDTF 127
>gnl|CDD|225610 COG3068, COG3068, Uncharacterized protein conserved in bacteria
[Function unknown].
Length = 194
Score = 27.1 bits (60), Expect = 6.0
Identities = 20/111 (18%), Positives = 46/111 (41%), Gaps = 24/111 (21%)
Query: 78 ETKVHRKTLNPVFNETFVFK---VSFLNRSEVFEQGVPYADAMN--------------KT 120
+ +++R+ L+ V+ ET K V+F ++ E E+ +P AD +
Sbjct: 44 DGQIYRRILDLVW-ETLTVKDAKVNFESQLEKLEEAIPSADDFDLYGVYPAIDACVALSE 102
Query: 121 LVFAIFDFDRFSKHDQIGEVKV-ALCQIDLAQTIEEW-----RELQSVEGE 165
L+ + + ++ + + + ++ Q E +E ++VE E
Sbjct: 103 LLHSRLSGETLEHAIEVSKTSITTVAMLEETQAGREMSDEELKENEAVEQE 153
>gnl|CDD|171782 PRK12865, PRK12865, YciI-like protein; Reviewed.
Length = 97
Score = 25.9 bits (57), Expect = 7.7
Identities = 17/49 (34%), Positives = 23/49 (46%), Gaps = 8/49 (16%)
Query: 43 SVTVIQAEDLPALDMGGTSDPYVKVYLLPDKKKKFETKVHRKTLNPVFN 91
S+ +++AE A +DPY K L FE+ V K N VFN
Sbjct: 53 SLVIVKAETKEAAKALADADPYAKAGL-------FES-VEVKAYNWVFN 93
>gnl|CDD|176693 cd08345, Fosfomycin_RP, Fosfomycin resistant protein; inhibits the
biological function of fosfomycin. This family contains
three types of fosfomycin resistant protein. Fosfomycin
inhibits the enzyme
UDP-N-acetylglucosamine-3-enolpyruvyltransferase (MurA),
which catalyzes the first committed step in bacterial
cell wall biosynthesis. The three types of fosfomycin
resistance proteins, employ different mechanisms to
render fosfomycin [(1R,2S)-epoxypropylphosphonic acid]
inactive. FosB catalyzes the addition of L-cysteine to
the epoxide ring of fosfomycin. FosX catalyzes the
addition of a water molecule to the C1 position of the
antibiotic with inversion of configuration at C1. FosA
catalyzes the addition of glutathione to the antibiotic
fosfomycin, making it inactive. Catalytic activities of
both FosX and FosA are Mn(II)-dependent, but FosB is
activated by Mg(II). Fosfomycin resistant proteins are
evolutionarily related to glyoxalase I and type I
extradiol dioxygenases.
Length = 113
Score = 26.0 bits (57), Expect = 9.4
Identities = 12/30 (40%), Positives = 17/30 (56%), Gaps = 1/30 (3%)
Query: 150 AQTIEEWRELQSVEGEGGQVYYLDGPKGNL 179
A +E E V+GEG +Y+ D P G+L
Sbjct: 77 ALGVEMKPERPRVQGEGRSIYFYD-PDGHL 105
>gnl|CDD|176066 cd08684, C2A_Tac2-N, C2 domain first repeat found in Tac2-N (Tandem
C2 protein in Nucleus). Tac2-N contains two C2 domains
and a short C-terminus including a WHXL motif, which are
key in stabilizing transport vesicles to the plasma
membrane by binding to a plasma membrane. However
unlike the usual carboxyl-terminal-type (C-type) tandem
C2 proteins, it lacks a transmembrane domain, a
Slp-homology domain, and a Munc13-1-interacting domain.
Homology search analysis indicate that no known protein
motifs are located in its N-terminus, making Tac2-N a
novel class of Ca2+-independent, C-type tandem C2
proteins. 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 = 103
Score = 25.6 bits (56), Expect = 9.7
Identities = 17/60 (28%), Positives = 27/60 (45%), Gaps = 1/60 (1%)
Query: 44 VTVIQAEDLP-ALDMGGTSDPYVKVYLLPDKKKKFETKVHRKTLNPVFNETFVFKVSFLN 102
+TV++ +DL G Y+K L K F++ + + F ETFVF + N
Sbjct: 3 ITVLKCKDLSWPSSCGENPTIYIKGILTLPKPVHFKSSAKEGSNDIEFMETFVFAIKLQN 62
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 0.391
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: 10,437,041
Number of extensions: 962887
Number of successful extensions: 909
Number of sequences better than 10.0: 1
Number of HSP's gapped: 790
Number of HSP's successfully gapped: 110
Length of query: 207
Length of database: 10,937,602
Length adjustment: 92
Effective length of query: 115
Effective length of database: 6,857,034
Effective search space: 788558910
Effective search space used: 788558910
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: 57 (25.9 bits)