RPS-BLAST 2.2.26 [Sep-21-2011]
Database: CDD.v3.10
44,354 sequences; 10,937,602 total letters
Searching..................................................done
Query= psy12482
(419 letters)
>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 = 244 bits (624), Expect = 2e-80
Identities = 97/165 (58%), Positives = 124/165 (75%), Gaps = 4/165 (2%)
Query: 245 KGELIIGLKFVPPEDSSLSSAKKSSSAAKGSLHVLIKEAKSLCPVKSN-TVDAFCKAYLL 303
+GEL + LK+VPPE +KK S+ G LHV +KEAK+L +KS T D+F K YLL
Sbjct: 1 RGELKVALKYVPPESEGALKSKKPST---GELHVWVKEAKNLPALKSGGTSDSFVKCYLL 57
Query: 304 PDKGRASKHKTGIIKRSTSPQWNHTVVYRDVSLEELSERCLELTVWDHDRLTSNEFLGGI 363
PDK + SK KT ++K+S +P WNHT VY VS E+LS+ CLELTVWDHD+L+SN+FLGG+
Sbjct: 58 PDKSKKSKQKTPVVKKSVNPVWNHTFVYDGVSPEDLSQACLELTVWDHDKLSSNDFLGGV 117
Query: 364 RLNLGHGKHYSKLVDWMDSSGKEILLWQQMMERPNFWVESCIPLR 408
RL LG GK Y + VDWMDS+G+EILLWQ+M++ PN WVE +PLR
Sbjct: 118 RLGLGTGKSYGQAVDWMDSTGEEILLWQKMLDNPNSWVEGTLPLR 162
Score = 97.0 bits (242), Expect = 5e-24
Identities = 44/122 (36%), Positives = 65/122 (53%), Gaps = 14/122 (11%)
Query: 108 KGEVEFGLQY------------NYKQGALEIHVKQCKDLAPVDTKRQRSDPYVKVYLLPD 155
+GE++ L+Y G L + VK+ K+L + + SD +VK YLLPD
Sbjct: 1 RGELKVALKYVPPESEGALKSKKPSTGELHVWVKEAKNLPALKS-GGTSDSFVKCYLLPD 59
Query: 156 KSKAGKRKTRVKKHTLSPVFDEVLKF-QLTLEDLECRTLWLSVWHSDMFGRNDFLGEVMM 214
KSK K+KT V K +++PV++ + ++ EDL L L+VW D NDFLG V +
Sbjct: 60 KSKKSKQKTPVVKKSVNPVWNHTFVYDGVSPEDLSQACLELTVWDHDKLSSNDFLGGVRL 119
Query: 215 SL 216
L
Sbjct: 120 GL 121
Score = 33.8 bits (78), Expect = 0.068
Identities = 10/25 (40%), Positives = 17/25 (68%)
Query: 1 LLARSKAGKRKTRVKKHTLSPVFDE 25
L +SK K+KT V K +++PV++
Sbjct: 57 LPDKSKKSKQKTPVVKKSVNPVWNH 81
>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 = 207 bits (529), Expect = 2e-66
Identities = 73/123 (59%), Positives = 93/123 (75%)
Query: 109 GEVEFGLQYNYKQGALEIHVKQCKDLAPVDTKRQRSDPYVKVYLLPDKSKAGKRKTRVKK 168
GE+EF L YNYK G+LE+H+K+C++LA D K++RS+PYVKVYLLPDKSK KRKT VKK
Sbjct: 1 GEIEFSLSYNYKTGSLEVHIKECRNLAYADEKKKRSNPYVKVYLLPDKSKQSKRKTSVKK 60
Query: 169 HTLSPVFDEVLKFQLTLEDLECRTLWLSVWHSDMFGRNDFLGEVMMSLENKVFDDPSPKC 228
+T +PVF+E LK+ ++ LE RTL LSVWH D FGRN FLGEV + L++ D +
Sbjct: 61 NTTNPVFNETLKYHISKSQLETRTLQLSVWHHDRFGRNTFLGEVEIPLDSWDLDSQQSEW 120
Query: 229 YPL 231
YPL
Sbjct: 121 YPL 123
Score = 96.2 bits (240), Expect = 3e-24
Identities = 46/137 (33%), Positives = 67/137 (48%), Gaps = 18/137 (13%)
Query: 246 GELIIGLKFVPPEDSSLSSAKKSSSAAKGSLHVLIKEAKSLCPV--KSNTVDAFCKAYLL 303
GE+ L + + GSL V IKE ++L K + + K YLL
Sbjct: 1 GEIEFSLSY---------------NYKTGSLEVHIKECRNLAYADEKKKRSNPYVKVYLL 45
Query: 304 PDKGRASKHKTGIIKRSTSPQWNHTVVYRDVSLEELSERCLELTVWDHDRLTSNEFLGGI 363
PDK + SK KT + K +T+P +N T+ Y +S +L R L+L+VW HDR N FLG +
Sbjct: 46 PDKSKQSKRKTSVKKNTTNPVFNETLKYH-ISKSQLETRTLQLSVWHHDRFGRNTFLGEV 104
Query: 364 RLNLGHGKHYSKLVDWM 380
+ L S+ +W
Sbjct: 105 EIPLDSWDLDSQQSEWY 121
Score = 47.6 bits (114), Expect = 6e-07
Identities = 18/38 (47%), Positives = 24/38 (63%), Gaps = 6/38 (15%)
Query: 4 RSKAGKRKTRVKKHTLSPVFDEVLKTAGERDFSVSSQQ 41
+SK KRKT VKK+T +PVF+E LK + +S Q
Sbjct: 48 KSKQSKRKTSVKKNTTNPVFNETLK------YHISKSQ 79
>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 = 164 bits (417), Expect = 8e-50
Identities = 70/125 (56%), Positives = 87/125 (69%)
Query: 108 KGEVEFGLQYNYKQGALEIHVKQCKDLAPVDTKRQRSDPYVKVYLLPDKSKAGKRKTRVK 167
+G V+F L Y+ K L +HV QC+DLA D K+QRSDPYVK YLLPDKS GKRKT VK
Sbjct: 1 QGSVQFALDYDPKLRELHVHVIQCQDLAAADPKKQRSDPYVKTYLLPDKSNRGKRKTSVK 60
Query: 168 KHTLSPVFDEVLKFQLTLEDLECRTLWLSVWHSDMFGRNDFLGEVMMSLENKVFDDPSPK 227
K TL+PVF+E L++++ E+L R L LSVWH D GRN FLGEV + L + + + P
Sbjct: 61 KKTLNPVFNETLRYKVEREELPTRVLNLSVWHRDSLGRNSFLGEVEVDLGSWDWSNTQPT 120
Query: 228 CYPLQ 232
YPLQ
Sbjct: 121 WYPLQ 125
Score = 82.5 bits (204), Expect = 3e-19
Identities = 38/101 (37%), Positives = 53/101 (52%), Gaps = 3/101 (2%)
Query: 270 SAAKGSLHVLIKEAKSLCP--VKSNTVDAFCKAYLLPDKGRASKHKTGIIKRSTSPQWNH 327
LHV + + + L K D + K YLLPDK K KT + K++ +P +N
Sbjct: 11 DPKLRELHVHVIQCQDLAAADPKKQRSDPYVKTYLLPDKSNRGKRKTSVKKKTLNPVFNE 70
Query: 328 TVVYRDVSLEELSERCLELTVWDHDRLTSNEFLGGIRLNLG 368
T+ Y+ V EEL R L L+VW D L N FLG + ++LG
Sbjct: 71 TLRYK-VEREELPTRVLNLSVWHRDSLGRNSFLGEVEVDLG 110
Score = 40.9 bits (96), Expect = 2e-04
Identities = 16/25 (64%), Positives = 20/25 (80%)
Query: 4 RSKAGKRKTRVKKHTLSPVFDEVLK 28
+S GKRKT VKK TL+PVF+E L+
Sbjct: 49 KSNRGKRKTSVKKKTLNPVFNETLR 73
>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 = 155 bits (394), Expect = 2e-46
Identities = 65/124 (52%), Positives = 89/124 (71%)
Query: 109 GEVEFGLQYNYKQGALEIHVKQCKDLAPVDTKRQRSDPYVKVYLLPDKSKAGKRKTRVKK 168
GE+ F L Y+YK +L +HVK+C++LA D ++RS+PYVK YLLPDKS+ KRKT +K+
Sbjct: 2 GEILFSLSYDYKTQSLNVHVKECRNLAYGDEAKKRSNPYVKTYLLPDKSRQSKRKTSIKR 61
Query: 169 HTLSPVFDEVLKFQLTLEDLECRTLWLSVWHSDMFGRNDFLGEVMMSLENKVFDDPSPKC 228
+T +PV++E LK+ ++ LE RTL LSVWH D FGRN FLGEV + L++ FD +C
Sbjct: 62 NTTNPVYNETLKYSISHSQLETRTLQLSVWHYDRFGRNTFLGEVEIPLDSWNFDSQHEEC 121
Query: 229 YPLQ 232
PL
Sbjct: 122 LPLH 125
Score = 80.2 bits (198), Expect = 2e-18
Identities = 41/116 (35%), Positives = 63/116 (54%), Gaps = 5/116 (4%)
Query: 268 SSSAAKGSLHVLIKEAKSLC---PVKSNTVDAFCKAYLLPDKGRASKHKTGIIKRSTSPQ 324
S SL+V +KE ++L K + + + K YLLPDK R SK KT I + +T+P
Sbjct: 9 SYDYKTQSLNVHVKECRNLAYGDEAKKRS-NPYVKTYLLPDKSRQSKRKTSIKRNTTNPV 67
Query: 325 WNHTVVYRDVSLEELSERCLELTVWDHDRLTSNEFLGGIRLNLGHGKHYSKLVDWM 380
+N T+ Y +S +L R L+L+VW +DR N FLG + + L S+ + +
Sbjct: 68 YNETLKY-SISHSQLETRTLQLSVWHYDRFGRNTFLGEVEIPLDSWNFDSQHEECL 122
Score = 34.7 bits (80), Expect = 0.022
Identities = 12/25 (48%), Positives = 20/25 (80%)
Query: 4 RSKAGKRKTRVKKHTLSPVFDEVLK 28
+S+ KRKT +K++T +PV++E LK
Sbjct: 49 KSRQSKRKTSIKRNTTNPVYNETLK 73
>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 = 130 bits (329), Expect = 7e-37
Identities = 61/126 (48%), Positives = 82/126 (65%), Gaps = 3/126 (2%)
Query: 109 GEVEFGLQYNYKQGALEIHVKQCKDLAPVDTKRQRSDPYVKVYLLPDKSKAGKRKTRVKK 168
GE+EF L YN++ LEI +K C++LA D K+++ PYVKV LLPDKS KRKT VKK
Sbjct: 2 GEIEFALHYNFRTSCLEITIKACRNLAYGDEKKKKCHPYVKVCLLPDKSHNSKRKTAVKK 61
Query: 169 HTLSPVFDEVLKFQLTLEDLECRTLWLSVWHSDMFGRNDFLGEVMMSLENKVFDDPSPK- 227
T++PVF+E LK+ + + L R L +SVWHS R FLGEV++ L + F+D +
Sbjct: 62 GTVNPVFNETLKYVVEADLLSSRQLQVSVWHSRTLKRRVFLGEVLIPLADWDFEDTDSQR 121
Query: 228 --CYPL 231
YPL
Sbjct: 122 FLWYPL 127
Score = 51.0 bits (122), Expect = 6e-08
Identities = 31/89 (34%), Positives = 44/89 (49%), Gaps = 3/89 (3%)
Query: 275 SLHVLIKEAKSLC--PVKSNTVDAFCKAYLLPDKGRASKHKTGIIKRSTSPQWNHTVVYR 332
L + IK ++L K + K LLPDK SK KT + K + +P +N T+ Y
Sbjct: 16 CLEITIKACRNLAYGDEKKKKCHPYVKVCLLPDKSHNSKRKTAVKKGTVNPVFNETLKYV 75
Query: 333 DVSLEELSERCLELTVWDHDRLTSNEFLG 361
V + LS R L+++VW L FLG
Sbjct: 76 -VEADLLSSRQLQVSVWHSRTLKRRVFLG 103
Score = 41.4 bits (97), Expect = 1e-04
Identities = 19/37 (51%), Positives = 23/37 (62%)
Query: 4 RSKAGKRKTRVKKHTLSPVFDEVLKTAGERDFSVSSQ 40
+S KRKT VKK T++PVF+E LK E D S Q
Sbjct: 49 KSHNSKRKTAVKKGTVNPVFNETLKYVVEADLLSSRQ 85
>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 = 107 bits (268), Expect = 5e-28
Identities = 40/109 (36%), Positives = 64/109 (58%), Gaps = 1/109 (0%)
Query: 111 VEFGLQYNYKQGALEIHVKQCKDLAPVDTKRQRSDPYVKVYLLPDKSKAGKRKTRVKKHT 170
+ L YN ++ L + + +C +LA +D SDP+VK+YL PD K K KT+VKK T
Sbjct: 2 ILVSLMYNTQRRGLIVGIIRCVNLAAMDAN-GYSDPFVKLYLKPDAGKKSKHKTQVKKKT 60
Query: 171 LSPVFDEVLKFQLTLEDLECRTLWLSVWHSDMFGRNDFLGEVMMSLENK 219
L+P F+E + + DL +TL ++VW D+ ND++G + + + K
Sbjct: 61 LNPEFNEEFFYDIKHSDLAKKTLEITVWDKDIGKSNDYIGGLQLGINAK 109
Score = 92.4 bits (230), Expect = 1e-22
Identities = 40/132 (30%), Positives = 71/132 (53%), Gaps = 15/132 (11%)
Query: 272 AKGSLHVLIKEAKSLCPVKSNTV-DAFCKAYLLPDKGRASKHKTGIIKRSTSPQWNHTVV 330
+ L V I +L + +N D F K YL PD G+ SKHKT + K++ +P++N
Sbjct: 11 QRRGLIVGIIRCVNLAAMDANGYSDPFVKLYLKPDAGKKSKHKTQVKKKTLNPEFNEEFF 70
Query: 331 YRDVSLEELSERCLELTVWDHDRLTSNEFLGGIRLNLGHGKHYSKLVDWMDSSGKEILLW 390
Y D+ +L+++ LE+TVWD D SN+++GG++L + ++ G+ + W
Sbjct: 71 Y-DIKHSDLAKKTLEITVWDKDIGKSNDYIGGLQLGI-------------NAKGERLRHW 116
Query: 391 QQMMERPNFWVE 402
++ P+ +E
Sbjct: 117 LDCLKNPDKKIE 128
Score = 31.5 bits (72), Expect = 0.30
Identities = 12/24 (50%), Positives = 15/24 (62%)
Query: 5 SKAGKRKTRVKKHTLSPVFDEVLK 28
K K KT+VKK TL+P F+E
Sbjct: 47 GKKSKHKTQVKKKTLNPEFNEEFF 70
>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 = 103 bits (259), Expect = 9e-27
Identities = 53/127 (41%), Positives = 78/127 (61%), Gaps = 3/127 (2%)
Query: 107 VKGEVEFGLQYNYKQGALEIHVKQCKDLAPVDTKRQRSDPYVKVYLLPDKSKAGKRKTRV 166
+ G ++ L Y+ L + V Q +DL P D R +PYVKVYLLPD+S+ KR+T+
Sbjct: 1 ITGRIQIQLWYDKVTSQLIVTVLQARDLPPRDDGSLR-NPYVKVYLLPDRSEKSKRRTKT 59
Query: 167 KKHTLSPVFDEVLKFQ-LTLEDLECRTLWLSVWHSDMFGRNDFLGEVMMSLENKVFDDPS 225
K TL+P +++ ++ + E L+ RTL ++VW D G NDFLGEV++ L + + DD
Sbjct: 60 VKKTLNPEWNQTFEYSNVRRETLKERTLEVTVWDYDRDGENDFLGEVVIDLADALLDD-E 118
Query: 226 PKCYPLQ 232
P YPLQ
Sbjct: 119 PHWYPLQ 125
Score = 86.1 bits (214), Expect = 2e-20
Identities = 38/99 (38%), Positives = 59/99 (59%), Gaps = 1/99 (1%)
Query: 273 KGSLHVLIKEAKSLCPVKSNTV-DAFCKAYLLPDKGRASKHKTGIIKRSTSPQWNHTVVY 331
L V + +A+ L P ++ + + K YLLPD+ SK +T +K++ +P+WN T Y
Sbjct: 15 TSQLIVTVLQARDLPPRDDGSLRNPYVKVYLLPDRSEKSKRRTKTVKKTLNPEWNQTFEY 74
Query: 332 RDVSLEELSERCLELTVWDHDRLTSNEFLGGIRLNLGHG 370
+V E L ER LE+TVWD+DR N+FLG + ++L
Sbjct: 75 SNVRRETLKERTLEVTVWDYDRDGENDFLGEVVIDLADA 113
>gnl|CDD|215765 pfam00168, C2, C2 domain.
Length = 85
Score = 101 bits (255), Expect = 1e-26
Identities = 38/89 (42%), Positives = 55/89 (61%), Gaps = 5/89 (5%)
Query: 124 LEIHVKQCKDLAPVDTKRQRSDPYVKVYLLPDKSKAGKRKTRVKKHTLSPVFDEVLKFQL 183
L + V K+L P D +SDPYVKV L K +KT+V K+TL+PV++E F++
Sbjct: 1 LRVTVISAKNLPPKDLNG-KSDPYVKVSLGGQKKD--TKKTKVVKNTLNPVWNETFTFEV 57
Query: 184 TLEDLECRTLWLSVWHSDMFGRNDFLGEV 212
TL +L L + V+ D FG++DF+GEV
Sbjct: 58 TLPELA--ELRIEVYDYDRFGKDDFIGEV 84
Score = 78.5 bits (194), Expect = 3e-18
Identities = 30/90 (33%), Positives = 48/90 (53%), Gaps = 6/90 (6%)
Query: 276 LHVLIKEAKSLCPVKSN-TVDAFCKAYLLPDKGRASKHKTGIIKRSTSPQWNHTVVYRDV 334
L V + AK+L P N D + K L K KT ++K + +P WN T + +V
Sbjct: 1 LRVTVISAKNLPPKDLNGKSDPYVKVSLGGQKKD--TKKTKVVKNTLNPVWNETFTF-EV 57
Query: 335 SLEELSERCLELTVWDHDRLTSNEFLGGIR 364
+L EL+E L + V+D+DR ++F+G +
Sbjct: 58 TLPELAE--LRIEVYDYDRFGKDDFIGEVT 85
Score = 33.4 bits (77), Expect = 0.029
Identities = 10/22 (45%), Positives = 16/22 (72%)
Query: 6 KAGKRKTRVKKHTLSPVFDEVL 27
K +KT+V K+TL+PV++E
Sbjct: 32 KKDTKKTKVVKNTLNPVWNETF 53
>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 = 101 bits (254), Expect = 5e-26
Identities = 45/107 (42%), Positives = 67/107 (62%), Gaps = 9/107 (8%)
Query: 109 GEVEFGLQYNYKQGALEIHVKQCKDLAPVD---TKRQRSDPYVKVYLLPDKSKAGKRKTR 165
G+++F L Y+++ L + + Q DL +D T SDPYVKVYLLPDK K K +T+
Sbjct: 3 GKLQFSLDYDFQSNQLTVGIIQAADLPAMDMGGT----SDPYVKVYLLPDKKK--KFETK 56
Query: 166 VKKHTLSPVFDEVLKFQLTLEDLECRTLWLSVWHSDMFGRNDFLGEV 212
V + TL+PVF+E F++ +L +TL SV+ D F ++D +GEV
Sbjct: 57 VHRKTLNPVFNETFTFKVPYSELGNKTLVFSVYDFDRFSKHDLIGEV 103
Score = 59.6 bits (145), Expect = 4e-11
Identities = 35/125 (28%), Positives = 58/125 (46%), Gaps = 17/125 (13%)
Query: 273 KGSLHVLIKEAKSLCPVK--SNTVDAFCKAYLLPDKGRASKHKTGIIKRSTSPQWNHTVV 330
L V I +A L P T D + K YLLPDK + K +T + +++ +P +N T
Sbjct: 15 SNQLTVGIIQAADL-PAMDMGGTSDPYVKVYLLPDKKK--KFETKVHRKTLNPVFNETFT 71
Query: 331 YRDVSLEELSERCLELTVWDHDRLTSNEFLGGIRLNLGHGKHYSKLVDWMDSSGKEILLW 390
++ V EL + L +V+D DR + ++ +G +R+ L VD G W
Sbjct: 72 FK-VPYSELGNKTLVFSVYDFDRFSKHDLIGEVRVPLL-------TVDL----GHVTEEW 119
Query: 391 QQMME 395
+ +
Sbjct: 120 RDLES 124
>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 = 101 bits (253), Expect = 7e-26
Identities = 39/96 (40%), Positives = 56/96 (58%), Gaps = 2/96 (2%)
Query: 115 LQYNYKQGALEIHVKQCKDLAPVDTKRQRSDPYVKVYLLPDKSKAGKRKTRVKKHTLSPV 174
L+ + K L + V++ K+L P+D SDPYVK+ L+PD K+KT+ K TL+PV
Sbjct: 6 LKISVKDNKLTVEVREAKNLIPMDPNGL-SDPYVKLKLIPDPKNETKQKTKTIKKTLNPV 64
Query: 175 FDEVLKFQLTLEDLECRTLWLSVWHSDMFGRNDFLG 210
++E F L D + R L + VW D RNDF+G
Sbjct: 65 WNETFTFDLKPADKD-RRLSIEVWDWDRTTRNDFMG 99
Score = 75.8 bits (187), Expect = 1e-16
Identities = 34/90 (37%), Positives = 51/90 (56%), Gaps = 3/90 (3%)
Query: 274 GSLHVLIKEAKSLCPVKSNTV-DAFCKAYLLPDKGRASKHKTGIIKRSTSPQWNHTVVYR 332
L V ++EAK+L P+ N + D + K L+PD +K KT IK++ +P WN T +
Sbjct: 13 NKLTVEVREAKNLIPMDPNGLSDPYVKLKLIPDPKNETKQKTKTIKKTLNPVWNETFTF- 71
Query: 333 DVSLEELSERCLELTVWDHDRLTSNEFLGG 362
D+ + R L + VWD DR T N+F+G
Sbjct: 72 DLKPADKDRR-LSIEVWDWDRTTRNDFMGS 100
Score = 31.5 bits (72), Expect = 0.31
Identities = 9/24 (37%), Positives = 14/24 (58%)
Query: 4 RSKAGKRKTRVKKHTLSPVFDEVL 27
K+KT+ K TL+PV++E
Sbjct: 46 PKNETKQKTKTIKKTLNPVWNETF 69
>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 = 97.7 bits (244), Expect = 1e-24
Identities = 37/107 (34%), Positives = 64/107 (59%)
Query: 273 KGSLHVLIKEAKSLCPVKSNTVDAFCKAYLLPDKGRASKHKTGIIKRSTSPQWNHTVVYR 332
G+L V++ AK+L + + D + K YLLPD + +K KT +++++ +P +N +VY
Sbjct: 12 NGTLFVMVMHAKNLPLLDGSDPDPYVKTYLLPDPQKTTKRKTKVVRKTRNPTFNEMLVYD 71
Query: 333 DVSLEELSERCLELTVWDHDRLTSNEFLGGIRLNLGHGKHYSKLVDW 379
+ +E+L +R L+++VW HD L NEFLGG+ + L + W
Sbjct: 72 GLPVEDLQQRVLQVSVWSHDSLVENEFLGGVCIPLKKLDLSQETEKW 118
Score = 93.9 bits (234), Expect = 2e-23
Identities = 51/125 (40%), Positives = 70/125 (56%), Gaps = 5/125 (4%)
Query: 108 KGEVEFGLQYNYKQGALEIHVKQCKDLAPVDTKRQRSDPYVKVYLLPDKSKAGKRKTRVK 167
G+V+ + Y K G L + V K+L +D DPYVK YLLPD K KRKT+V
Sbjct: 1 GGQVKLSISY--KNGTLFVMVMHAKNLPLLDG--SDPDPYVKTYLLPDPQKTTKRKTKVV 56
Query: 168 KHTLSPVFDEVLKFQ-LTLEDLECRTLWLSVWHSDMFGRNDFLGEVMMSLENKVFDDPSP 226
+ T +P F+E+L + L +EDL+ R L +SVW D N+FLG V + L+ +
Sbjct: 57 RKTRNPTFNEMLVYDGLPVEDLQQRVLQVSVWSHDSLVENEFLGGVCIPLKKLDLSQETE 116
Query: 227 KCYPL 231
K YPL
Sbjct: 117 KWYPL 121
>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 = 96.1 bits (240), Expect = 5e-24
Identities = 44/110 (40%), Positives = 63/110 (57%), Gaps = 1/110 (0%)
Query: 109 GEVEFGLQYNYKQGALEIHVKQCKDLAPVDTKRQRSDPYVKVYLLPDKSKAGKRKTRVKK 168
GE+ L Y L + V + ++L P D K SDPYVKV LL K K+KT VKK
Sbjct: 1 GELLLSLSYLPTAERLTVVVLKARNLPPSDGKGL-SDPYVKVSLLQGGKKLKKKKTSVKK 59
Query: 169 HTLSPVFDEVLKFQLTLEDLECRTLWLSVWHSDMFGRNDFLGEVMMSLEN 218
TL+PVF+E F + E LE +L ++V D GRN+ +G+V++ ++
Sbjct: 60 GTLNPVFNEAFSFDVPAEQLEEVSLVITVVDKDSVGRNEVIGQVVLGPDS 109
Score = 76.9 bits (190), Expect = 4e-17
Identities = 42/154 (27%), Positives = 71/154 (46%), Gaps = 30/154 (19%)
Query: 246 GELIIGLKFVPPEDSSLSSAKKSSSAAKGSLHVLIKEAKSL-CPVKSNTVDAFCKAYLLP 304
GEL++ L ++P +A++ L V++ +A++L D + K LL
Sbjct: 1 GELLLSLSYLP-------TAER--------LTVVVLKARNLPPSDGKGLSDPYVKVSLLQ 45
Query: 305 DKGRASKHKTGIIKRSTSPQWNHTVVYRDVSLEELSERCLELTVWDHDRLTSNEFLGGIR 364
+ K KT + K + +P +N + DV E+L E L +TV D D + NE +G +
Sbjct: 46 GGKKLKKKKTSVKKGTLNPVFNEAFSF-DVPAEQLEEVSLVITVVDKDSVGRNEVIG--Q 102
Query: 365 LNLGHGKHYSKLVDWMDSSGKEILLWQQMMERPN 398
+ LG DS G+E+ W +M+ P
Sbjct: 103 VVLG-----------PDSGGEELEHWNEMLASPR 125
Score = 35.3 bits (82), Expect = 0.014
Identities = 17/41 (41%), Positives = 24/41 (58%), Gaps = 6/41 (14%)
Query: 6 KAGKRKTRVKKHTLSPVFDEVLKTAGERDFSVSSQQDKQAS 46
K K+KT VKK TL+PVF+E F V ++Q ++ S
Sbjct: 49 KLKKKKTSVKKGTLNPVFNEAFS------FDVPAEQLEEVS 83
>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 = 91.4 bits (227), Expect = 1e-22
Identities = 40/109 (36%), Positives = 58/109 (53%), Gaps = 8/109 (7%)
Query: 124 LEIHVKQCKDLAPVDTKRQRSDPYVKVYLLPDKSKAGKRKTRVKKHTLSPVFDEVLKFQL 183
L + V + ++L D +SDPYVKV L + K KT+V K+TL+PV++E +F +
Sbjct: 1 LRVTVIEARNLPAKDLNG-KSDPYVKVSLGGKQ----KFKTKVVKNTLNPVWNETFEFPV 55
Query: 184 TLEDLECRTLWLSVWHSDMFGRNDFLGEVMMSLENKVFDD-PSPKCYPL 231
D E TL + VW D F ++DFLGEV + L + PL
Sbjct: 56 L--DPESDTLTVEVWDKDRFSKDDFLGEVEIPLSELLDSGKEGELWLPL 102
Score = 71.3 bits (175), Expect = 2e-15
Identities = 28/104 (26%), Positives = 47/104 (45%), Gaps = 8/104 (7%)
Query: 276 LHVLIKEAKSLCPVKSN-TVDAFCKAYLLPDKGRASKHKTGIIKRSTSPQWNHTVVYRDV 334
L V + EA++L N D + K L + K KT ++K + +P WN T +
Sbjct: 1 LRVTVIEARNLPAKDLNGKSDPYVKVSLGGKQ----KFKTKVVKNTLNPVWNETFEFP-- 54
Query: 335 SLEELSERCLELTVWDHDRLTSNEFLGGIRLNLGHGKHYSKLVD 378
+ + L + VWD DR + ++FLG + + L K +
Sbjct: 55 -VLDPESDTLTVEVWDKDRFSKDDFLGEVEIPLSELLDSGKEGE 97
Score = 31.7 bits (72), Expect = 0.17
Identities = 10/20 (50%), Positives = 16/20 (80%)
Query: 9 KRKTRVKKHTLSPVFDEVLK 28
K KT+V K+TL+PV++E +
Sbjct: 33 KFKTKVVKNTLNPVWNETFE 52
>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 = 90.4 bits (225), Expect = 5e-22
Identities = 46/112 (41%), Positives = 73/112 (65%), Gaps = 3/112 (2%)
Query: 107 VKGEVEFGLQYNYKQGALEIHVKQCKDLAPVDTKRQRSDPYVKVYLLPDKSKAGKRKTRV 166
G ++ ++Y+ ++ L + V +C++L P D DPYV++YLLPDKSK+ +RKT V
Sbjct: 1 PLGRIQLTIRYSSQRQKLIVTVHKCRNLPPCD-SSDIPDPYVRLYLLPDKSKSTRRKTSV 59
Query: 167 KKHTLSPVFDEVLKFQLTLEDLECRTLWLSVWHSDMF--GRNDFLGEVMMSL 216
KK L+PVFDE +F ++LE+L+ RTL ++V +S F LG+V++ L
Sbjct: 60 KKDNLNPVFDETFEFPVSLEELKRRTLDVAVKNSKSFLSREKKLLGQVLIDL 111
Score = 71.1 bits (175), Expect = 4e-15
Identities = 30/103 (29%), Positives = 56/103 (54%), Gaps = 4/103 (3%)
Query: 270 SAAKGSLHVLIKEAKSLCPV-KSNTVDAFCKAYLLPDKGRASKHKTGIIKRSTSPQWNHT 328
S+ + L V + + ++L P S+ D + + YLLPDK ++++ KT + K + +P ++ T
Sbjct: 12 SSQRQKLIVTVHKCRNLPPCDSSDIPDPYVRLYLLPDKSKSTRRKTSVKKDNLNPVFDET 71
Query: 329 VVYRDVSLEELSERCLELTVWDHDRL--TSNEFLGGIRLNLGH 369
+ VSLEEL R L++ V + + LG + ++L
Sbjct: 72 FEF-PVSLEELKRRTLDVAVKNSKSFLSREKKLLGQVLIDLSD 113
Score = 37.6 bits (88), Expect = 0.002
Identities = 18/41 (43%), Positives = 26/41 (63%), Gaps = 6/41 (14%)
Query: 4 RSKAGKRKTRVKKHTLSPVFDEVLKTAGERDFSVSSQQDKQ 44
+SK+ +RKT VKK L+PVFDE +F VS ++ K+
Sbjct: 49 KSKSTRRKTSVKKDNLNPVFDETF------EFPVSLEELKR 83
>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 = 88.3 bits (219), Expect = 2e-21
Identities = 36/95 (37%), Positives = 57/95 (60%), Gaps = 5/95 (5%)
Query: 124 LEIHVKQCKDLAPVDTKRQRSDPYVKVYLLPDKSKAGKRKTRVKKHTLSPVFDEVLKFQL 183
L + + ++L P D + SDPYVKV L D + K+KT+V K+TL+PV++E F+
Sbjct: 2 LTVKIISARNLPPKDKGGK-SDPYVKVSLDGDPKE--KKKTKVVKNTLNPVWNE--TFEF 56
Query: 184 TLEDLECRTLWLSVWHSDMFGRNDFLGEVMMSLEN 218
+ E L + V+ D FGR+DF+G+V + L +
Sbjct: 57 EVPPPELAELEIEVYDKDRFGRDDFIGQVTIPLSD 91
Score = 72.1 bits (177), Expect = 1e-15
Identities = 28/94 (29%), Positives = 45/94 (47%), Gaps = 6/94 (6%)
Query: 275 SLHVLIKEAKSLCPV-KSNTVDAFCKAYLLPDKGRASKHKTGIIKRSTSPQWNHTVVYRD 333
+L V I A++L P K D + K L D K KT ++K + +P WN T +
Sbjct: 1 TLTVKIISARNLPPKDKGGKSDPYVKVSLDGDPKE--KKKTKVVKNTLNPVWNETFEF-- 56
Query: 334 VSLEELSERCLELTVWDHDRLTSNEFLGGIRLNL 367
+ LE+ V+D DR ++F+G + + L
Sbjct: 57 -EVPPPELAELEIEVYDKDRFGRDDFIGQVTIPL 89
Score = 30.9 bits (70), Expect = 0.31
Identities = 12/35 (34%), Positives = 20/35 (57%), Gaps = 6/35 (17%)
Query: 9 KRKTRVKKHTLSPVFDEVLKTAGERDFSVSSQQDK 43
K+KT+V K+TL+PV++E +F V +
Sbjct: 36 KKKTKVVKNTLNPVWNETF------EFEVPPPELA 64
>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 = 87.8 bits (218), Expect = 6e-21
Identities = 42/109 (38%), Positives = 66/109 (60%), Gaps = 3/109 (2%)
Query: 109 GEVEFGLQYNYKQGALEIHVKQCKDLAPVDTKRQRSDPYVKVYLLPDKSKAGKRKTRVKK 168
G + F L+YN ++ AL +++ +C+DL +D + SDPYVK+ LLP+K K KTRV +
Sbjct: 3 GTLFFSLRYNSEKKALLVNIIECRDLPAMDEQSGTSDPYVKLQLLPEKEH--KVKTRVLR 60
Query: 169 HTLSPVFDEVLKF-QLTLEDLECRTLWLSVWHSDMFGRNDFLGEVMMSL 216
T +PV+DE F + L+ +L +V D + R+D +GEV+ L
Sbjct: 61 KTRNPVYDETFTFYGIPYNQLQDLSLHFAVLSFDRYSRDDVIGEVVCPL 109
Score = 42.3 bits (100), Expect = 5e-05
Identities = 25/93 (26%), Positives = 48/93 (51%), Gaps = 8/93 (8%)
Query: 273 KGSLHVLIKEAKSLCPV--KSNTVDAFCKAYLLPDKGRASKH--KTGIIKRSTSPQWNHT 328
K +L V I E + L + +S T D + K LLP+K +H KT +++++ +P ++ T
Sbjct: 15 KKALLVNIIECRDLPAMDEQSGTSDPYVKLQLLPEK----EHKVKTRVLRKTRNPVYDET 70
Query: 329 VVYRDVSLEELSERCLELTVWDHDRLTSNEFLG 361
+ + +L + L V DR + ++ +G
Sbjct: 71 FTFYGIPYNQLQDLSLHFAVLSFDRYSRDDVIG 103
Score = 30.0 bits (68), Expect = 1.1
Identities = 11/20 (55%), Positives = 14/20 (70%)
Query: 6 KAGKRKTRVKKHTLSPVFDE 25
K K KTRV + T +PV+DE
Sbjct: 50 KEHKVKTRVLRKTRNPVYDE 69
>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 = 85.8 bits (213), Expect = 2e-20
Identities = 38/110 (34%), Positives = 68/110 (61%), Gaps = 2/110 (1%)
Query: 109 GEVEFGLQYNYKQGALEIHVKQCKDLAPVDTKRQRSDPYVKVYLLPDKSKAGKRKTRVKK 168
G + F +QY+ ++ L + + + ++L P DP+VKV LLPD+ ++ +++VK+
Sbjct: 1 GRLWFSVQYDLEEEQLTVSLIKARNLPPRTKDVAHCDPFVKVCLLPDERRS--LQSKVKR 58
Query: 169 HTLSPVFDEVLKFQLTLEDLECRTLWLSVWHSDMFGRNDFLGEVMMSLEN 218
T +P FDE FQ++ ++L+ RTL LSV+ D F R+ +G V+ L++
Sbjct: 59 KTQNPNFDETFVFQVSFKELQRRTLRLSVYDVDRFSRHCIIGHVLFPLKD 108
Score = 45.7 bits (109), Expect = 3e-06
Identities = 27/80 (33%), Positives = 46/80 (57%), Gaps = 5/80 (6%)
Query: 276 LHVLIKEAKSLCP--VKSNTVDAFCKAYLLPDKGRASKHKTGIIKRSTSPQWNHTVVYRD 333
L V + +A++L P D F K LLPD+ R+ + + + +++ +P ++ T V+
Sbjct: 16 LTVSLIKARNLPPRTKDVAHCDPFVKVCLLPDERRSLQ--SKVKRKTQNPNFDETFVF-Q 72
Query: 334 VSLEELSERCLELTVWDHDR 353
VS +EL R L L+V+D DR
Sbjct: 73 VSFKELQRRTLRLSVYDVDR 92
>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 = 84.6 bits (210), Expect = 8e-20
Identities = 41/122 (33%), Positives = 59/122 (48%), Gaps = 11/122 (9%)
Query: 101 RYGSVIVKGEVEFGLQYNYKQGALEIHVKQCKDLAPVDTKRQRSDPYVKVYLLPDK--SK 158
YG + VK Y + +L + + ++L P+D+ SDP+VKV LLP
Sbjct: 1 PYGVLTVK------AYYRASEQSLRVEILNARNLLPLDSN-GSSDPFVKVELLPRHLFPD 53
Query: 159 AGKRKTRVKKHTLSPVFDEVLKFQLTLEDLECR--TLWLSVWHSDMFGRNDFLGEVMMSL 216
KT+VKK TL P+FDE +F + E L +V D+ G NDF GE + L
Sbjct: 54 VPTPKTQVKKKTLFPLFDESFEFNVPPEQCSVEGALLLFTVKDYDLLGSNDFEGEAFLPL 113
Query: 217 EN 218
+
Sbjct: 114 ND 115
Score = 52.2 bits (126), Expect = 2e-08
Identities = 32/92 (34%), Positives = 47/92 (51%), Gaps = 6/92 (6%)
Query: 275 SLHVLIKEAKSLCPVKSN-TVDAFCKAYLLPDK--GRASKHKTGIIKRSTSPQWNHTVVY 331
SL V I A++L P+ SN + D F K LLP KT + K++ P ++ + +
Sbjct: 17 SLRVEILNARNLLPLDSNGSSDPFVKVELLPRHLFPDVPTPKTQVKKKTLFPLFDESFEF 76
Query: 332 RDVSLEELSER--CLELTVWDHDRLTSNEFLG 361
+V E+ S L TV D+D L SN+F G
Sbjct: 77 -NVPPEQCSVEGALLLFTVKDYDLLGSNDFEG 107
Score = 34.9 bits (81), Expect = 0.021
Identities = 14/33 (42%), Positives = 19/33 (57%), Gaps = 6/33 (18%)
Query: 9 KRKTRVKKHTLSPVFDEVLKTAGERDFSVSSQQ 41
KT+VKK TL P+FDE +F+V +Q
Sbjct: 56 TPKTQVKKKTLFPLFDESF------EFNVPPEQ 82
>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 = 84.3 bits (209), Expect = 9e-20
Identities = 46/111 (41%), Positives = 63/111 (56%), Gaps = 3/111 (2%)
Query: 109 GEVEFGLQYNYKQGALEIHVKQCKDLAPVDTKRQRSDPYVKVYLLPDKSKAGKRKTRVKK 168
G +EF L Y+ AL + + K L +D SDPYVK+ LLP SKA K +T+
Sbjct: 2 GTLEFTLLYDPANSALHCTIIRAKGLKAMD-ANGLSDPYVKLNLLPGASKATKLRTKTVH 60
Query: 169 HTLSPVFDEVLKFQ-LTLEDLECRTLWLSVWHSDMFGRNDFLGEVMMSLEN 218
T +P F+E L + +T ED++ +TL L V D FG NDFLGE + L+
Sbjct: 61 KTRNPEFNETLTYYGITEEDIQRKTLRLLVLDEDRFG-NDFLGETRIPLKK 110
Score = 75.4 bits (186), Expect = 1e-16
Identities = 32/94 (34%), Positives = 53/94 (56%), Gaps = 2/94 (2%)
Query: 275 SLHVLIKEAKSLCPVKSN-TVDAFCKAYLLPDKGRASKHKTGIIKRSTSPQWNHTVVYRD 333
+LH I AK L + +N D + K LLP +A+K +T + ++ +P++N T+ Y
Sbjct: 16 ALHCTIIRAKGLKAMDANGLSDPYVKLNLLPGASKATKLRTKTVHKTRNPEFNETLTYYG 75
Query: 334 VSLEELSERCLELTVWDHDRLTSNEFLGGIRLNL 367
++ E++ + L L V D DR N+FLG R+ L
Sbjct: 76 ITEEDIQRKTLRLLVLDEDRF-GNDFLGETRIPL 108
Score = 27.2 bits (61), Expect = 7.6
Identities = 10/23 (43%), Positives = 14/23 (60%)
Query: 5 SKAGKRKTRVKKHTLSPVFDEVL 27
SKA K +T+ T +P F+E L
Sbjct: 49 SKATKLRTKTVHKTRNPEFNETL 71
>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 = 83.5 bits (207), Expect = 2e-19
Identities = 40/112 (35%), Positives = 64/112 (57%), Gaps = 4/112 (3%)
Query: 108 KGEVEFGLQYNYKQGALEIHVKQCKDLAPVDTKRQRSDPYVKVYLLPDKSKAGKRKTRVK 167
G ++F + Y++++ L + + + +L P SDP+VK+YLLPDK K +T+VK
Sbjct: 2 LGRIQFSVSYDFQESTLTLKILKAVEL-PAKDFSGTSDPFVKIYLLPDKKH--KLETKVK 58
Query: 168 KHTLSPVFDEVLKFQ-LTLEDLECRTLWLSVWHSDMFGRNDFLGEVMMSLEN 218
+ L+P ++E F+ E L+ R L+L V D F RND +GEV + L
Sbjct: 59 RKNLNPHWNETFLFEGFPYEKLQQRVLYLQVLDYDRFSRNDPIGEVSLPLNK 110
Score = 69.3 bits (170), Expect = 2e-14
Identities = 38/109 (34%), Positives = 57/109 (52%), Gaps = 5/109 (4%)
Query: 275 SLHVLIKEAKSLCPVK--SNTVDAFCKAYLLPDKGRASKHKTGIIKRSTSPQWNHTVVYR 332
+L + I +A L P K S T D F K YLLPDK K +T + +++ +P WN T ++
Sbjct: 17 TLTLKILKAVEL-PAKDFSGTSDPFVKIYLLPDKKH--KLETKVKRKNLNPHWNETFLFE 73
Query: 333 DVSLEELSERCLELTVWDHDRLTSNEFLGGIRLNLGHGKHYSKLVDWMD 381
E+L +R L L V D+DR + N+ +G + L L + W D
Sbjct: 74 GFPYEKLQQRVLYLQVLDYDRFSRNDPIGEVSLPLNKVDLTEEQTFWKD 122
>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 = 80.5 bits (199), Expect = 3e-18
Identities = 41/127 (32%), Positives = 58/127 (45%), Gaps = 18/127 (14%)
Query: 124 LEIHVKQCKDLAPVDTKRQRSDPYVKV-YLLPDKSKAGKRKTRVKKHTLSPVFDEVLKFQ 182
L + V +C+DLA DP+ +V K+ ++T+VKK T +P FDE F+
Sbjct: 1 LSVRVLECRDLALKSN--GTCDPFARVTLNYSSKTDT--KRTKVKKKTNNPRFDEAFYFE 56
Query: 183 LT-------------LEDLECRTLWLSVWHSDMFGRNDFLGEVMMSLENKVFDDPSPKCY 229
LT EDLE L + +WH+ M +DFLGEV + L+ Y
Sbjct: 57 LTIGFSYEKKSFKVEEEDLEKSELRVELWHASMVSGDDFLGEVRIPLQGLQQAGSHQAWY 116
Query: 230 PLQERSE 236
LQ R
Sbjct: 117 FLQPREA 123
Score = 49.3 bits (118), Expect = 2e-07
Identities = 21/105 (20%), Positives = 42/105 (40%), Gaps = 15/105 (14%)
Query: 276 LHVLIKEAKSLCPVKSNTVDAF-CKAYLLPDKGRASKHKTGIIKRSTSPQWNHT------ 328
L V + E + L + T D F K + T + K++ +P+++
Sbjct: 1 LSVRVLECRDLALKSNGTCDPFARVTLNYSSKTDTKR--TKVKKKTNNPRFDEAFYFELT 58
Query: 329 ------VVYRDVSLEELSERCLELTVWDHDRLTSNEFLGGIRLNL 367
V E+L + L + +W ++ ++FLG +R+ L
Sbjct: 59 IGFSYEKKSFKVEEEDLEKSELRVELWHASMVSGDDFLGEVRIPL 103
Score = 27.3 bits (61), Expect = 9.0
Identities = 13/39 (33%), Positives = 18/39 (46%)
Query: 10 RKTRVKKHTLSPVFDEVLKTAGERDFSVSSQQDKQASPD 48
++T+VKK T +P FDE FS + K D
Sbjct: 36 KRTKVKKKTNNPRFDEAFYFELTIGFSYEKKSFKVEEED 74
>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 = 79.4 bits (196), Expect = 5e-18
Identities = 39/118 (33%), Positives = 67/118 (56%), Gaps = 3/118 (2%)
Query: 107 VKGEVEFGLQYNYKQGALEIHVKQCKDLAPVDTKRQRSDPYVKVYLLPDKSKAGKRKTRV 166
+GE+ F L+Y+ G L + + Q ++L P D +DPY KV LLPD+S +++++
Sbjct: 1 TRGELHFSLEYDKDMGILNVKLIQARNLQPRDFS-GTADPYCKVRLLPDRSNT--KQSKI 57
Query: 167 KKHTLSPVFDEVLKFQLTLEDLECRTLWLSVWHSDMFGRNDFLGEVMMSLENKVFDDP 224
K TL+P FDE F++ ++L RTL + ++ D F R++ +G V + L +
Sbjct: 58 HKKTLNPEFDESFVFEVPPQELPKRTLEVLLYDFDQFSRDECIGVVELPLAEVDLSEK 115
Score = 49.7 bits (119), Expect = 1e-07
Identities = 32/97 (32%), Positives = 59/97 (60%), Gaps = 4/97 (4%)
Query: 274 GSLHVLIKEAKSLCPVK-SNTVDAFCKAYLLPDKGRASKHKTGIIKRSTSPQWNHTVVYR 332
G L+V + +A++L P S T D +CK LLPD+ + K I K++ +P+++ + V+
Sbjct: 16 GILNVKLIQARNLQPRDFSGTADPYCKVRLLPDRSNTKQSK--IHKKTLNPEFDESFVF- 72
Query: 333 DVSLEELSERCLELTVWDHDRLTSNEFLGGIRLNLGH 369
+V +EL +R LE+ ++D D+ + +E +G + L L
Sbjct: 73 EVPPQELPKRTLEVLLYDFDQFSRDECIGVVELPLAE 109
>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 = 78.2 bits (193), Expect = 2e-17
Identities = 35/106 (33%), Positives = 64/106 (60%), Gaps = 1/106 (0%)
Query: 109 GEVEFGLQYNYKQGALEIHVKQCKDLAPVDTKRQRSDPYVKVYLLPDKSKAGKRKTRVKK 168
G++ F L+Y G L + + + K+L +D SDPYVK++L+ + + K+KT +KK
Sbjct: 2 GDICFSLRYVPTAGKLTVVILEAKNLKKMDVG-GLSDPYVKIHLMQNGKRLKKKKTTIKK 60
Query: 169 HTLSPVFDEVLKFQLTLEDLECRTLWLSVWHSDMFGRNDFLGEVMM 214
TL+P ++E F++ E ++ L ++V D G+ND +G+V++
Sbjct: 61 RTLNPYYNESFSFEVPFEQIQKVHLIVTVLDYDRIGKNDPIGKVVL 106
Score = 66.7 bits (163), Expect = 2e-13
Identities = 43/156 (27%), Positives = 74/156 (47%), Gaps = 36/156 (23%)
Query: 246 GELIIGLKFVPPEDSSLSSAKKSSSAAKGSLHVLIKEAKSLCPVKSNTV----DAFCKAY 301
G++ L++VP G L V+I EAK+L K V D + K +
Sbjct: 2 GDICFSLRYVP---------------TAGKLTVVILEAKNL---KKMDVGGLSDPYVKIH 43
Query: 302 LLPDKGRASKHKTGIIKRSTSPQWNHTVVYRDVSLEELSERCLELTVWDHDRLTSNEFLG 361
L+ + R K KT I KR+ +P +N + + +V E++ + L +TV D+DR+ N+ +G
Sbjct: 44 LMQNGKRLKKKKTTIKKRTLNPYYNESFSF-EVPFEQIQKVHLIVTVLDYDRIGKNDPIG 102
Query: 362 GIRLNLGHGKHYSKLVDWMDSSGKEILLWQQMMERP 397
++ LG +++G E+ W M+ P
Sbjct: 103 --KVVLG-----------CNATGAELRHWSDMLASP 125
Score = 27.8 bits (62), Expect = 5.5
Identities = 9/25 (36%), Positives = 16/25 (64%)
Query: 1 LLARSKAGKRKTRVKKHTLSPVFDE 25
+ + K+KT +KK TL+P ++E
Sbjct: 45 MQNGKRLKKKKTTIKKRTLNPYYNE 69
>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 = 75.9 bits (187), Expect = 1e-16
Identities = 38/107 (35%), Positives = 61/107 (57%), Gaps = 1/107 (0%)
Query: 109 GEVEFGLQYNYKQGALEIHVKQCKDLAPVDTKRQRSDPYVKVYLLPDKSKAGKRKTRVKK 168
GE+ L YN + +++ + ++L +D SDPYVKV+L+ + K+KT +KK
Sbjct: 2 GELLLSLCYNPTANRITVNIIKARNLKAMDIN-GTSDPYVKVWLMYKDKRVEKKKTVIKK 60
Query: 169 HTLSPVFDEVLKFQLTLEDLECRTLWLSVWHSDMFGRNDFLGEVMMS 215
TL+PVF+E F + LE L TL ++V D RND +G++ +
Sbjct: 61 RTLNPVFNESFIFNIPLERLRETTLIITVMDKDRLSRNDLIGKIYLG 107
Score = 62.8 bits (153), Expect = 5e-12
Identities = 40/125 (32%), Positives = 64/125 (51%), Gaps = 15/125 (12%)
Query: 274 GSLHVLIKEAKSLCPVKSN-TVDAFCKAYLLPDKGRASKHKTGIIKRSTSPQWNHTVVYR 332
+ V I +A++L + N T D + K +L+ R K KT I KR+ +P +N + ++
Sbjct: 15 NRITVNIIKARNLKAMDINGTSDPYVKVWLMYKDKRVEKKKTVIKKRTLNPVFNESFIF- 73
Query: 333 DVSLEELSERCLELTVWDHDRLTSNEFLGGIRLNLGHGKHYSKLVDWMDSSGKEILLWQQ 392
++ LE L E L +TV D DRL+ N+ +G I LG S G E+ W+
Sbjct: 74 NIPLERLRETTLIITVMDKDRLSRNDLIGKI--YLGW-----------KSGGLELKHWKD 120
Query: 393 MMERP 397
M+ +P
Sbjct: 121 MLSKP 125
Score = 31.6 bits (72), Expect = 0.26
Identities = 11/17 (64%), Positives = 15/17 (88%)
Query: 9 KRKTRVKKHTLSPVFDE 25
K+KT +KK TL+PVF+E
Sbjct: 53 KKKTVIKKRTLNPVFNE 69
>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 = 72.9 bits (179), Expect = 1e-15
Identities = 36/102 (35%), Positives = 60/102 (58%), Gaps = 1/102 (0%)
Query: 109 GEVEFGLQYNYKQGALEIHVKQCKDLAPVDTKRQRSDPYVKVYLLPDKSKAGKRKTRVKK 168
GE+ F L Y G L + + + ++L +D SDPYVKV L+ + + K+KT VKK
Sbjct: 1 GELMFSLCYLPTAGRLTLTIIKARNLKAMDIT-GFSDPYVKVSLMCEGRRLKKKKTSVKK 59
Query: 169 HTLSPVFDEVLKFQLTLEDLECRTLWLSVWHSDMFGRNDFLG 210
+TL+P ++E L F + E+++ +L ++V D G N+ +G
Sbjct: 60 NTLNPTYNEALVFDVPPENVDNVSLIIAVVDYDRVGHNELIG 101
Score = 51.4 bits (123), Expect = 4e-08
Identities = 30/103 (29%), Positives = 53/103 (51%), Gaps = 8/103 (7%)
Query: 295 DAFCKAYLLPDKGRASKHKTGIIKRSTSPQWNHTVVYRDVSLEELSERCLELTVWDHDRL 354
D + K L+ + R K KT + K + +P +N +V+ DV E + L + V D+DR+
Sbjct: 36 DPYVKVSLMCEGRRLKKKKTSVKKNTLNPTYNEALVF-DVPPENVDNVSLIIAVVDYDRV 94
Query: 355 TSNEFLGGIRLN---LGHGK-HYSKLVDWMDSSGKEILLWQQM 393
NE +G R+ G G+ H++++ + + K I W Q+
Sbjct: 95 GHNELIGVCRVGPNADGQGREHWNEM---LANPRKPIAQWHQL 134
Score = 32.5 bits (74), Expect = 0.15
Identities = 11/19 (57%), Positives = 16/19 (84%)
Query: 9 KRKTRVKKHTLSPVFDEVL 27
K+KT VKK+TL+P ++E L
Sbjct: 52 KKKTSVKKNTLNPTYNEAL 70
>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 = 69.0 bits (169), Expect = 4e-14
Identities = 44/127 (34%), Positives = 59/127 (46%), Gaps = 17/127 (13%)
Query: 124 LEIHVKQCKDLAPVDTKRQRSDPYVKVYLLPDKSKAGKRKTRVKKHTLSPVFDEVLKFQL 183
L + V +C DLA K DPY V L+ K ++T+VKK T +P FDE F +
Sbjct: 2 LSVRVIECSDLA---LKNGTCDPYASVTLIYSNKKQDTKRTKVKKKTNNPQFDEAFYFDV 58
Query: 184 TL-------------EDLECRTLWLSVWHSDMFGRNDFLGEVMMSLENKVFDDPSPKC-Y 229
T+ ED E L + +WH+ M G + FLGEV + L S + Y
Sbjct: 59 TIDSSPEKKQFEMPEEDAEKLELRVDLWHASMGGGDVFLGEVRIPLRGLDLQAGSHQAWY 118
Query: 230 PLQERSE 236
LQ R E
Sbjct: 119 FLQPREE 125
Score = 38.1 bits (89), Expect = 0.002
Identities = 20/104 (19%), Positives = 42/104 (40%), Gaps = 13/104 (12%)
Query: 276 LHVLIKEAKSLCPVKSNTVDAFCKAYLLPDKGRASKHKTGIIKRSTSPQWNHT------- 328
L V + E L +K+ T D + L+ + +T + K++ +PQ++
Sbjct: 2 LSVRVIECSDL-ALKNGTCDPYASVTLIYSNKKQDTKRTKVKKKTNNPQFDEAFYFDVTI 60
Query: 329 -----VVYRDVSLEELSERCLELTVWDHDRLTSNEFLGGIRLNL 367
++ E+ + L + +W + FLG +R+ L
Sbjct: 61 DSSPEKKQFEMPEEDAEKLELRVDLWHASMGGGDVFLGEVRIPL 104
Score = 27.4 bits (61), Expect = 9.6
Identities = 9/17 (52%), Positives = 13/17 (76%)
Query: 10 RKTRVKKHTLSPVFDEV 26
++T+VKK T +P FDE
Sbjct: 37 KRTKVKKKTNNPQFDEA 53
>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 = 66.5 bits (162), Expect = 3e-13
Identities = 31/106 (29%), Positives = 55/106 (51%), Gaps = 1/106 (0%)
Query: 109 GEVEFGLQYNYKQGALEIHVKQCKDLAPVDTKRQRSDPYVKVYLLPDKSKAGKRKTRVKK 168
GE+ L Y G L + + + K L D Q SDP+VK+ L+ +KT +
Sbjct: 1 GELLLSLNYLPSAGRLNVDIIRAKQLLQTDMS-QGSDPFVKIQLVHGLKLIKTKKTSCMR 59
Query: 169 HTLSPVFDEVLKFQLTLEDLECRTLWLSVWHSDMFGRNDFLGEVMM 214
T+ P ++E F++ E+LE +L +V+ ++ NDF+G +++
Sbjct: 60 GTIDPFYNESFSFKVPQEELENVSLVFTVYGHNVKSSNDFIGRIVI 105
Score = 46.0 bits (109), Expect = 3e-06
Identities = 34/119 (28%), Positives = 53/119 (44%), Gaps = 17/119 (14%)
Query: 246 GELIIGLKFVPPEDSSLSSAKKSSSAAKGSLHVLIKEAKSLCPVK-SNTVDAFCKAYLLP 304
GEL++ L ++P + G L+V I AK L S D F K L+
Sbjct: 1 GELLLSLNYLP---------------SAGRLNVDIIRAKQLLQTDMSQGSDPFVKIQLVH 45
Query: 305 DKGRASKHKTGIIKRSTSPQWNHTVVYRDVSLEELSERCLELTVWDHDRLTSNEFLGGI 363
KT ++ + P +N + ++ V EEL L TV+ H+ +SN+F+G I
Sbjct: 46 GLKLIKTKKTSCMRGTIDPFYNESFSFK-VPQEELENVSLVFTVYGHNVKSSNDFIGRI 103
>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 = 65.1 bits (159), Expect = 1e-12
Identities = 36/113 (31%), Positives = 60/113 (53%), Gaps = 10/113 (8%)
Query: 109 GEVEFGLQYNYKQGALEIHVKQCKDLAPVDTKRQRSDPYVKVYLLPDKSKAGKRKTRVKK 168
G+++ GL K+G LE+ V + + L + PYVKVYLL K K+KT++ +
Sbjct: 18 GDIQLGLYD--KKGQLEVEVIRARGLVQKPGSKVLPAPYVKVYLLEGKKCIAKKKTKIAR 75
Query: 169 HTLSPVFDEVLKFQLTLEDLECRTLWLSVWHSDMFGRND---FLGEVMMSLEN 218
TL P++ + L F ++ +TL + VW +GR D F+G + L++
Sbjct: 76 KTLDPLYQQQLVFDVSPTG---KTLQVIVWGD--YGRMDKKVFMGVAQILLDD 123
Score = 35.4 bits (82), Expect = 0.015
Identities = 25/92 (27%), Positives = 42/92 (45%), Gaps = 7/92 (7%)
Query: 273 KGSLHVLIKEAKSLC--PVKSNTVDAFCKAYLLPDKGRASKHKTGIIKRSTSPQWNHTVV 330
KG L V + A+ L P + K YLL K +K KT I +++ P + +V
Sbjct: 28 KGQLEVEVIRARGLVQKPGSKVLPAPYVKVYLLEGKKCIAKKKTKIARKTLDPLYQQQLV 87
Query: 331 YRDVSLEELSERCLELTVW-DHDRLTSNEFLG 361
+ + + L++ VW D+ R+ F+G
Sbjct: 88 FD----VSPTGKTLQVIVWGDYGRMDKKVFMG 115
>gnl|CDD|176049 cd08404, C2B_Synaptotagmin-4, C2 domain second repeat present in
Synaptotagmin 4. Synaptotagmin is a
membrane-trafficking protein characterized by a
N-terminal transmembrane region, a linker, and 2
C-terminal C2 domains. Synaptotagmin 4, a member of
class 4 synaptotagmins, is located in the brain. It
functions are unknown. It, like synaptotagmin-11, has an
Asp to Ser substitution in its C2A domain. Previously
all synaptotagmins were thought to be calcium sensors in
the regulation of neurotransmitter release and hormone
secretion, but it has been shown that not all of them
bind calcium. Of the 17 identified synaptotagmins only
8 bind calcium (1-3, 5-7, 9, 10). The function of the
two C2 domains that bind calcium are: regulating the
fusion step of synaptic vesicle exocytosis (C2A) and
binding to phosphatidyl-inositol-3,4,5-triphosphate
(PIP3) in the absence of calcium ions and to
phosphatidylinositol bisphosphate (PIP2) in their
presence (C2B). C2B also regulates also the recycling
step of synaptic vesicles. C2 domains fold into an
8-standed beta-sandwich that can adopt 2 structural
arrangements: Type I and Type II, distinguished by a
circular permutation involving their N- and C-terminal
beta strands. Many C2 domains are Ca2+-dependent
membrane-targeting modules that bind a wide variety of
substances including bind phospholipids, inositol
polyphosphates, and intracellular proteins. Most C2
domain proteins are either signal transduction enzymes
that contain a single C2 domain, such as protein kinase
C, or membrane trafficking proteins which contain at
least two C2 domains, such as synaptotagmin 1. However,
there are a few exceptions to this including RIM
isoforms and some splice variants of piccolo/aczonin and
intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. This cd contains the second C2
repeat, C2B, and has a type-I topology.
Length = 136
Score = 64.0 bits (156), Expect = 2e-12
Identities = 37/103 (35%), Positives = 55/103 (53%), Gaps = 1/103 (0%)
Query: 108 KGEVEFGLQYNYKQGALEIHVKQCKDLAPVDTKRQRSDPYVKVYLLPDKSKAGKRKTRVK 167
+GE+ L Y L + V + + L +D +DPYVKV L K + K+KT VK
Sbjct: 1 RGELLLSLCYQPTTNRLTVVVLKARHLPKMDVSGL-ADPYVKVNLYYGKKRISKKKTHVK 59
Query: 168 KHTLSPVFDEVLKFQLTLEDLECRTLWLSVWHSDMFGRNDFLG 210
K TL+PVF+E F + E+LE ++ V SD +N+ +G
Sbjct: 60 KCTLNPVFNESFVFDIPSEELEDISVEFLVLDSDRVTKNEVIG 102
Score = 59.7 bits (145), Expect = 5e-11
Identities = 41/129 (31%), Positives = 63/129 (48%), Gaps = 11/129 (8%)
Query: 271 AAKGSLHVLIKEAKSLCPVK-SNTVDAFCKAYLLPDKGRASKHKTGIIKRSTSPQWNHTV 329
L V++ +A+ L + S D + K L K R SK KT + K + +P +N +
Sbjct: 12 PTTNRLTVVVLKARHLPKMDVSGLADPYVKVNLYYGKKRISKKKTHVKKCTLNPVFNESF 71
Query: 330 VYRDVSLEELSERCLELTVWDHDRLTSNEFLGGIRLNLG-----HGKHYSKLVDWMDSSG 384
V+ D+ EEL + +E V D DR+T NE +G RL LG G H+ K V +
Sbjct: 72 VF-DIPSEELEDISVEFLVLDSDRVTKNEVIG--RLVLGPKASGSGGHHWKEVC--NPPR 126
Query: 385 KEILLWQQM 393
++I W +
Sbjct: 127 RQIAEWHML 135
Score = 32.0 bits (73), Expect = 0.19
Identities = 15/39 (38%), Positives = 22/39 (56%), Gaps = 4/39 (10%)
Query: 3 ARSKAGKRKTRVKKHTLSPVFDEV----LKTAGERDFSV 37
+ + K+KT VKK TL+PVF+E + + D SV
Sbjct: 47 GKKRISKKKTHVKKCTLNPVFNESFVFDIPSEELEDISV 85
>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 = 60.6 bits (147), Expect = 3e-11
Identities = 34/106 (32%), Positives = 57/106 (53%), Gaps = 1/106 (0%)
Query: 109 GEVEFGLQYNYKQGALEIHVKQCKDLAPVDTKRQRSDPYVKVYLLPDKSKAGKRKTRVKK 168
GE+ L Y L + V + ++L D + +DP+VKVYLL D K K+KT VK+
Sbjct: 2 GEILLSLSYLPTAERLTVVVVKARNLV-WDNGKTTADPFVKVYLLQDGRKISKKKTSVKR 60
Query: 169 HTLSPVFDEVLKFQLTLEDLECRTLWLSVWHSDMFGRNDFLGEVMM 214
+P+F+E + F + L+ +L ++V S G+ +G V++
Sbjct: 61 DDTNPIFNEAMIFSVPAIVLQDLSLRVTVAESTEDGKTPNVGHVII 106
Score = 44.4 bits (105), Expect = 1e-05
Identities = 34/122 (27%), Positives = 58/122 (47%), Gaps = 19/122 (15%)
Query: 276 LHVLIKEAKSLCPVKSNTV-DAFCKAYLLPDKGRASKHKTGIIKRSTSPQWNHTVVYR-- 332
L V++ +A++L T D F K YLL D + SK KT + + T+P +N +++
Sbjct: 17 LTVVVVKARNLVWDNGKTTADPFVKVYLLQDGRKISKKKTSVKRDDTNPIFNEAMIFSVP 76
Query: 333 DVSLEELSERCLELTVWDHDRLTSNEFLGGIRLNLGHGKHYSKLVDWMDSSGKEILLWQQ 392
+ L++LS L +TV + G N+GH ++ +SG + W Q
Sbjct: 77 AIVLQDLS---LRVTVAEST-------EDGKTPNVGH------VIIGPAASGMGLSHWNQ 120
Query: 393 MM 394
M+
Sbjct: 121 ML 122
>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 = 57.1 bits (138), Expect = 3e-10
Identities = 32/94 (34%), Positives = 52/94 (55%), Gaps = 8/94 (8%)
Query: 124 LEIHVKQCKDLAPVDTKRQRSDPYVKVYLLPDKSKAGKRKTRVKKHTLSPVFDEVLKFQL 183
L HV + +DLAP D + SDP+V+V+ +T V K + P ++EV +F+L
Sbjct: 2 LRCHVLEARDLAPKD-RNGTSDPFVRVFY-----NGQTLETSVVKKSCYPRWNEVFEFEL 55
Query: 184 TLEDLECRTLWLSVWHSDMFGRNDFLGEVMMSLE 217
+ L + VW D+ +NDFLG+V+ S++
Sbjct: 56 --MEGADSPLSVEVWDWDLVSKNDFLGKVVFSIQ 87
Score = 39.4 bits (92), Expect = 5e-04
Identities = 28/86 (32%), Positives = 46/86 (53%), Gaps = 11/86 (12%)
Query: 277 HVLIKEAKSLCPV-KSNTVDAFCKAYLLPDKGRASKHKTGIIKRSTSPQWNHTVVYRDVS 335
HVL EA+ L P ++ T D F + + G+ +T ++K+S P+WN +
Sbjct: 5 HVL--EARDLAPKDRNGTSDPFVRVFY---NGQT--LETSVVKKSCYPRWNEVFEFE--- 54
Query: 336 LEELSERCLELTVWDHDRLTSNEFLG 361
L E ++ L + VWD D ++ N+FLG
Sbjct: 55 LMEGADSPLSVEVWDWDLVSKNDFLG 80
>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 = 56.0 bits (136), Expect = 8e-10
Identities = 32/103 (31%), Positives = 53/103 (51%), Gaps = 6/103 (5%)
Query: 126 IHVKQCKDLAPVDTKRQRSDPYVKVYLLPDKSKAGKRKTRVKKHTLSPVFDEVLKFQLTL 185
++V + ++L P D +SDPY+K+ L K K R + TL+PVF ++ F+L
Sbjct: 4 VYVVRARNLQPKDPN-GKSDPYLKIKLG--KKKINDRDNYIPN-TLNPVFGKM--FELEA 57
Query: 186 EDLECRTLWLSVWHSDMFGRNDFLGEVMMSLENKVFDDPSPKC 228
L +SV D+ G +D +GE ++ LE++ F C
Sbjct: 58 TLPGNSILKISVMDYDLLGSDDLIGETVIDLEDRFFSKHRATC 100
Score = 28.7 bits (65), Expect = 2.3
Identities = 7/18 (38%), Positives = 14/18 (77%)
Query: 344 LELTVWDHDRLTSNEFLG 361
L+++V D+D L S++ +G
Sbjct: 65 LKISVMDYDLLGSDDLIG 82
>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 = 54.6 bits (132), Expect = 2e-09
Identities = 29/101 (28%), Positives = 53/101 (52%), Gaps = 13/101 (12%)
Query: 122 GALEIHVKQCKDLAPVDT-----KRQRSDPYVKVYLLPDKSKAGKRKTRVKKHTLSPVFD 176
G L IHV + +DL D + +SDPYV V + A K++V K L+P ++
Sbjct: 1 GVLRIHVIEAQDLVAKDKFVGGLVKGKSDPYVIV-----RVGAQTFKSKVIKENLNPKWN 55
Query: 177 EVLKFQLTLEDLECRTLWLSVWHSDMFGRNDFLGEVMMSLE 217
EV ++ ++++ + L + ++ D ++DFLG + + L
Sbjct: 56 EV--YEAVVDEVPGQELEIELFDEDP-DKDDFLGRLSIDLG 93
Score = 28.4 bits (64), Expect = 2.8
Identities = 25/102 (24%), Positives = 49/102 (48%), Gaps = 16/102 (15%)
Query: 274 GSLHVLIKEAKSL-------CPVKSNTVDAFCKAYLLPDKGRASKHKTGIIKRSTSPQWN 326
G L + + EA+ L + D + + A K+ +IK + +P+WN
Sbjct: 1 GVLRIHVIEAQDLVAKDKFVGGLVKGKSDPYVIVRV-----GAQTFKSKVIKENLNPKWN 55
Query: 327 HTVVYRDVSLEELSERCLELTVWDHDRLTSNEFLGGIRLNLG 368
VY + ++E+ + LE+ ++D D ++FLG + ++LG
Sbjct: 56 E--VY-EAVVDEVPGQELEIELFDEDP-DKDDFLGRLSIDLG 93
>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 = 54.1 bits (131), Expect = 4e-09
Identities = 28/78 (35%), Positives = 41/78 (52%), Gaps = 7/78 (8%)
Query: 136 PVDTKRQRSDPYVKVYL--LPDKSKAGKRKTRVKKH-TLSPVFDEVLKFQLTLEDLECRT 192
P K DPYV+V + LP A K KT+V K+ +PV++E +F +T+ +L
Sbjct: 17 PKGDKGSIVDPYVEVEIHGLPADDSA-KFKTKVVKNNGFNPVWNETFEFDVTVPELA--F 73
Query: 193 LWLSVWHSDMFGRNDFLG 210
L V+ D +DFLG
Sbjct: 74 LRFVVYDEDSGD-DDFLG 90
>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 = 53.8 bits (130), Expect = 5e-09
Identities = 30/109 (27%), Positives = 54/109 (49%), Gaps = 6/109 (5%)
Query: 111 VEFGLQYNYKQGALEIHVKQCKDLAPVDTKRQRSDPYVKVYLLPDKSKAGKR---KTRVK 167
V+ GL+Y+ +L I V+Q ++L+ + + S YV+V LLP + +T+
Sbjct: 3 VQIGLRYDSGDSSLVISVEQLRNLSALSIP-ENSKVYVRVALLP--CSSSTSCLFRTKAL 59
Query: 168 KHTLSPVFDEVLKFQLTLEDLECRTLWLSVWHSDMFGRNDFLGEVMMSL 216
+ PVF+EV + ++ L +TL + V + + LG +SL
Sbjct: 60 EDQDKPVFNEVFRVPISSTKLYQKTLQVDVCSVGPDQQEECLGGAQISL 108
>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 = 52.7 bits (127), Expect = 9e-09
Identities = 29/95 (30%), Positives = 51/95 (53%), Gaps = 9/95 (9%)
Query: 276 LHVLIKEAKSLCPV---KSNTVDAFCKAYLLPDKGRASKHKTGIIKRSTSPQWNHTVVYR 332
L V + A+ L PV S+ DAF + ++ +KT ++K+S +P WN
Sbjct: 1 LKVRVVAARDL-PVMDRSSDLTDAFVEVKFG-----STTYKTDVVKKSLNPVWNSEWFRF 54
Query: 333 DVSLEELSERCLELTVWDHDRLTSNEFLGGIRLNL 367
+V EEL + L++ V DHD ++N+ +G + ++L
Sbjct: 55 EVDDEELQDEPLQIRVMDHDTYSANDAIGKVYIDL 89
Score = 43.4 bits (103), Expect = 1e-05
Identities = 27/94 (28%), Positives = 47/94 (50%), Gaps = 6/94 (6%)
Query: 124 LEIHVKQCKDLAPVDTKRQRSDPYVKVYLLPDKSKAGKRKTRVKKHTLSPVF-DEVLKFQ 182
L++ V +DL +D +D +V+V K T V K +L+PV+ E +F+
Sbjct: 1 LKVRVVAARDLPVMDRSSDLTDAFVEVKFGSTTYK-----TDVVKKSLNPVWNSEWFRFE 55
Query: 183 LTLEDLECRTLWLSVWHSDMFGRNDFLGEVMMSL 216
+ E+L+ L + V D + ND +G+V + L
Sbjct: 56 VDDEELQDEPLQIRVMDHDTYSANDAIGKVYIDL 89
>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 = 52.4 bits (126), Expect = 1e-08
Identities = 34/115 (29%), Positives = 56/115 (48%), Gaps = 11/115 (9%)
Query: 122 GALEIHVKQCKDLAPVD-TKRQRSDPYVKVYLLPDKSKAGKRKTRVKKHTLSPVFDEVLK 180
G L +HV + KDLA D + + +SDPY + + A + KT+ +TL+P ++
Sbjct: 1 GVLRVHVVEAKDLAAKDRSGKGKSDPYAILSV-----GAQRFKTQTIPNTLNPKWNY--W 53
Query: 181 FQLTLEDLECRTLWLSVWHSDMFGRNDFLGEVMMSLENKVFDDP---SPKCYPLQ 232
+ + + + L L +W D F D+LGE ++LE D S K L+
Sbjct: 54 CEFPIFSAQNQLLKLILWDKDRFAGKDYLGEFDIALEEVFADGKTGQSDKWITLK 108
Score = 37.0 bits (86), Expect = 0.004
Identities = 25/89 (28%), Positives = 40/89 (44%), Gaps = 5/89 (5%)
Query: 274 GSLHVLIKEAKSLCPVKSNTVDAFCKAYLLPDKGRASKHKTGIIKRSTSPQWNHTVVYRD 333
G L V + EAK L K + Y + G A + KT I + +P+WN + +
Sbjct: 1 GVLRVHVVEAKDLAA-KDRSGKGKSDPYAILSVG-AQRFKTQTIPNTLNPKWN---YWCE 55
Query: 334 VSLEELSERCLELTVWDHDRLTSNEFLGG 362
+ + L+L +WD DR ++LG
Sbjct: 56 FPIFSAQNQLLKLILWDKDRFAGKDYLGE 84
>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 = 52.3 bits (126), Expect = 1e-08
Identities = 33/98 (33%), Positives = 52/98 (53%), Gaps = 14/98 (14%)
Query: 124 LEIHVKQCKDLAPVDTKRQRSDPYVKVYLLPDKSKAGKR---KTRVKKHTLSPVFDEVLK 180
L+IH+K+ ++LA D + SDPYVK K G + K++ L+PV+DE K
Sbjct: 2 LDIHLKEGRNLAARD-RGGTSDPYVKF-------KYGGKTVYKSKTIYKNLNPVWDE--K 51
Query: 181 FQLTLEDLECRTLWLSVWHSDMFGRNDFLGEVMMSLEN 218
F L +ED+ L++ V+ D +DF+G + L
Sbjct: 52 FTLPIEDVTQ-PLYIKVFDYDRGLTDDFMGSAFVDLST 88
Score = 29.9 bits (68), Expect = 0.92
Identities = 21/95 (22%), Positives = 49/95 (51%), Gaps = 11/95 (11%)
Query: 275 SLHVLIKEAKSLCPV--KSNTVDAFCKAYLLPDKGRASKHKTGIIKRSTSPQWNHTVVYR 332
L + +KE ++L + T D + K G+ +K+ I ++ +P W+
Sbjct: 1 QLDIHLKEGRNL-AARDRGGTSDPYVKFKY---GGKTV-YKSKTIYKNLNPVWDEKFT-- 53
Query: 333 DVSLEELSERCLELTVWDHDRLTSNEFLGGIRLNL 367
+ +E++++ L + V+D+DR +++F+G ++L
Sbjct: 54 -LPIEDVTQP-LYIKVFDYDRGLTDDFMGSAFVDL 86
>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 = 51.1 bits (123), Expect = 3e-08
Identities = 30/115 (26%), Positives = 53/115 (46%), Gaps = 21/115 (18%)
Query: 122 GALEIHVKQCKDLAPVDTKRQRS---DPYVKVYLLPDKSKAGKR--KTRVKKHTLSPVFD 176
G + + +K DL P+ + DP+V + G+R +T ++HTL+PVF+
Sbjct: 1 GVVFMEIKSITDLPPLKNMTRTGFDMDPFVIISF-------GRRVFRTSWRRHTLNPVFN 53
Query: 177 EVLKFQ-LTLE---DLECRTLWLSVWHSDMFGRNDFLGEVMMSLENKVFDDPSPK 227
E L F+ E D++ + V D F ND++ +S++ + P P
Sbjct: 54 ERLAFEVYPHEKNFDIQFK-----VLDKDKFSFNDYVATGSLSVQELLNAAPQPD 103
Score = 36.8 bits (86), Expect = 0.003
Identities = 11/22 (50%), Positives = 17/22 (77%), Gaps = 2/22 (9%)
Query: 8 GKR--KTRVKKHTLSPVFDEVL 27
G+R +T ++HTL+PVF+E L
Sbjct: 35 GRRVFRTSWRRHTLNPVFNERL 56
Score = 28.0 bits (63), Expect = 3.3
Identities = 9/55 (16%), Positives = 25/55 (45%), Gaps = 2/55 (3%)
Query: 313 KTGIIKRSTSPQWNHTVVYRDVSLEELSERCLELTVWDHDRLTSNEFLGGIRLNL 367
+T + + +P +N + + E ++ V D D+ + N+++ L++
Sbjct: 40 RTSWRRHTLNPVFNERLAFEVYPHE--KNFDIQFKVLDKDKFSFNDYVATGSLSV 92
>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 = 51.0 bits (123), Expect = 3e-08
Identities = 19/70 (27%), Positives = 32/70 (45%), Gaps = 7/70 (10%)
Query: 144 SDPYVKVYLLPDKSKAGKRKTRVKKHTLSPVFDEVL--KFQLTLEDLECRTLWLSVWHSD 201
DP VKV + K + T VKK T P ++E F + ++L + + +SV+ S
Sbjct: 21 IDPVVKVEVGGQK-----KYTSVKKGTNCPFYNEYFFFNFHESPDELFDKIIKISVYDSR 75
Query: 202 MFGRNDFLGE 211
+ +G
Sbjct: 76 SLRSDTLIGS 85
Score = 43.3 bits (103), Expect = 1e-05
Identities = 21/93 (22%), Positives = 42/93 (45%), Gaps = 9/93 (9%)
Query: 277 HVLIKEAKSLCPVKSNTVDAFCKAYLLPDKGRASKHKTGIIKRSTSPQWNHTVVY-RDVS 335
V + EA+ L +D K + K T + K + P +N + S
Sbjct: 7 RVRVIEARQL---VGGNIDPVVKVEVGGQK-----KYTSVKKGTNCPFYNEYFFFNFHES 58
Query: 336 LEELSERCLELTVWDHDRLTSNEFLGGIRLNLG 368
+EL ++ ++++V+D L S+ +G +L++G
Sbjct: 59 PDELFDKIIKISVYDSRSLRSDTLIGSFKLDVG 91
Score = 31.4 bits (72), Expect = 0.28
Identities = 8/19 (42%), Positives = 11/19 (57%)
Query: 9 KRKTRVKKHTLSPVFDEVL 27
K+ T VKK T P ++E
Sbjct: 33 KKYTSVKKGTNCPFYNEYF 51
>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 = 51.0 bits (123), Expect = 4e-08
Identities = 31/113 (27%), Positives = 53/113 (46%), Gaps = 17/113 (15%)
Query: 124 LEIHVKQCKDLAPVDTKRQRSDPYVKVYLLPDKSKAGKR--KTRVKKHTLSPVFDEVLKF 181
L + V ++L D +SDP+VK YL G++ KT+ K TL+PV++E +
Sbjct: 1 LTVDVISAENLPSADRN-GKSDPFVKFYL------NGEKVFKTKTIKKTLNPVWNESFEV 53
Query: 182 QLTLEDLECRT---LWLSVWHSDMFGRNDFLGEVMMSLENKVFDDPSPKCYPL 231
+ R L + V+ D G++D LG + L + ++ + PL
Sbjct: 54 PVP-----SRVRAVLKVEVYDWDRGGKDDLLGSAYIDLSDLEPEETTELTLPL 101
Score = 34.9 bits (81), Expect = 0.017
Identities = 16/55 (29%), Positives = 29/55 (52%), Gaps = 3/55 (5%)
Query: 313 KTGIIKRSTSPQWNHTVVYRDVSLEELSERCLELTVWDHDRLTSNEFLGGIRLNL 367
KT IK++ +P WN + +V + L++ V+D DR ++ LG ++L
Sbjct: 35 KTKTIKKTLNPVWNESF---EVPVPSRVRAVLKVEVYDWDRGGKDDLLGSAYIDL 86
Score = 27.5 bits (62), Expect = 6.0
Identities = 8/19 (42%), Positives = 13/19 (68%)
Query: 11 KTRVKKHTLSPVFDEVLKT 29
KT+ K TL+PV++E +
Sbjct: 35 KTKTIKKTLNPVWNESFEV 53
>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 = 50.7 bits (122), Expect = 4e-08
Identities = 30/110 (27%), Positives = 49/110 (44%), Gaps = 13/110 (11%)
Query: 122 GALEIHVKQCKDLAPVDTKRQRSDPYVKVYLLPDKSKAGK--RKTRVKKHTLSPVFDEVL 179
G L + + + DL D SDPYV +K GK TR+ + L+PV++E
Sbjct: 1 GVLVVTIHRATDLPKADFGTGSSDPYVTASF----AKFGKPLYSTRIIRKDLNPVWEETW 56
Query: 180 KFQLTLEDLECR-TLWLSVWHSDMFGRNDFLGEV------MMSLENKVFD 222
+T ++++ L +W SD F +D LG V ++ N +
Sbjct: 57 FVLVTPDEVKAGERLSCRLWDSDRFTADDRLGRVEIDLKELIEDRNWMGR 106
Score = 36.5 bits (85), Expect = 0.004
Identities = 25/92 (27%), Positives = 36/92 (39%), Gaps = 8/92 (8%)
Query: 274 GSLHVLIKEAKSLCPVKSNTV--DAFCKAYLLPDKGRASK--HKTGIIKRSTSPQWNHTV 329
G L V I A L T D + A + K + T II++ +P W T
Sbjct: 1 GVLVVTIHRATDLPKADFGTGSSDPYVTASF----AKFGKPLYSTRIIRKDLNPVWEETW 56
Query: 330 VYRDVSLEELSERCLELTVWDHDRLTSNEFLG 361
E + L +WD DR T+++ LG
Sbjct: 57 FVLVTPDEVKAGERLSCRLWDSDRFTADDRLG 88
>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 = 50.6 bits (122), Expect = 7e-08
Identities = 40/138 (28%), Positives = 67/138 (48%), Gaps = 27/138 (19%)
Query: 124 LEIHVKQCKDLAPVDTKRQRSDPYVKVYLLPDKSKAGKRKTRVKKHTLSPVFDEVLKF-Q 182
L ++ Q +DL D K SDP+ +V L ++S+ +T V K TLSP +D+ L F +
Sbjct: 3 LRAYIYQARDLLAAD-KSGLSDPFARVSFL-NQSQ----ETEVIKETLSPTWDQTLIFDE 56
Query: 183 LTL----EDL--ECRTLWLSVWHSDMFGRNDFLG------EVMMSLENKVFDDPSPKCYP 230
+ L E++ + + ++ D G+++FLG V + LE P + +P
Sbjct: 57 VELYGSPEEIAQNPPLVVVELFDQDSVGKDEFLGRSVAKPLVKLDLEEDF--PPKLQWFP 114
Query: 231 L----QERSEILD--ELI 242
+ Q E+L ELI
Sbjct: 115 IYKGGQSAGELLAAFELI 132
Score = 36.4 bits (85), Expect = 0.007
Identities = 26/90 (28%), Positives = 42/90 (46%), Gaps = 17/90 (18%)
Query: 313 KTGIIKRSTSPQWNHTVVYRDVSL----EELSER----CLELTVWDHDRLTSNEFLGGIR 364
+T +IK + SP W+ T+++ +V L EE+++ +EL +D D + +EFLG
Sbjct: 36 ETEVIKETLSPTWDQTLIFDEVELYGSPEEIAQNPPLVVVEL--FDQDSVGKDEFLGRSV 93
Query: 365 LNLGHGKHYSKLVDWMDSSGKEILLWQQMM 394
K KL D K L W +
Sbjct: 94 -----AKPLVKLDLEEDFPPK--LQWFPIY 116
Score = 29.8 bits (68), Expect = 1.1
Identities = 9/17 (52%), Positives = 12/17 (70%)
Query: 11 KTRVKKHTLSPVFDEVL 27
+T V K TLSP +D+ L
Sbjct: 36 ETEVIKETLSPTWDQTL 52
>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 = 50.0 bits (120), Expect = 1e-07
Identities = 34/96 (35%), Positives = 50/96 (52%), Gaps = 10/96 (10%)
Query: 122 GALEIHVKQCKDLAPVDTKRQRSDPYVKVYLLPDKSKAGKRKTRVKKHTLSPVFDEVLKF 181
G L++ V + +LA D SDPYV + L K KTRV K L+PV++E L
Sbjct: 2 GLLKVRVVRGTNLAVRDFTS--SDPYVVLTL-----GNQKVKTRVIKKNLNPVWNEEL-- 52
Query: 182 QLTLEDLECRTLWLSVWHSDMFGRNDFLGEVMMSLE 217
L++ + L L V+ D F ++D +GE + LE
Sbjct: 53 TLSVPNPM-APLKLEVFDKDTFSKDDSMGEAEIDLE 87
Score = 36.9 bits (86), Expect = 0.005
Identities = 15/53 (28%), Positives = 28/53 (52%), Gaps = 4/53 (7%)
Query: 309 ASKHKTGIIKRSTSPQWNHTVVYRDVSLEELSERCLELTVWDHDRLTSNEFLG 361
K KT +IK++ +P WN + +S+ L+L V+D D + ++ +G
Sbjct: 32 NQKVKTRVIKKNLNPVWNEELT---LSVPNP-MAPLKLEVFDKDTFSKDDSMG 80
Score = 27.7 bits (62), Expect = 6.9
Identities = 11/19 (57%), Positives = 14/19 (73%)
Query: 9 KRKTRVKKHTLSPVFDEVL 27
K KTRV K L+PV++E L
Sbjct: 34 KVKTRVIKKNLNPVWNEEL 52
>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 = 49.7 bits (119), Expect = 2e-07
Identities = 32/103 (31%), Positives = 48/103 (46%), Gaps = 15/103 (14%)
Query: 144 SDPYVKVYLLPDKSKAGKR----KTRVKKHTLSPVFDEVLKFQLTLEDLECRTLWLSVWH 199
SDPYVK+ L +T+ K TL+P ++E F++ E R L V+
Sbjct: 21 SDPYVKISLY--DPDGNGEIDSVQTKTIKKTLNPKWNEEFFFRVN--PREHRLL-FEVFD 75
Query: 200 SDMFGRNDFLGEVMMSLENKVFDDP------SPKCYPLQERSE 236
+ R+DFLG+V + L N + P + K Y L+ RS
Sbjct: 76 ENRLTRDDFLGQVEVPLNNLPTETPGNERRYTFKDYLLRPRSS 118
Score = 31.9 bits (73), Expect = 0.20
Identities = 18/57 (31%), Positives = 30/57 (52%), Gaps = 4/57 (7%)
Query: 314 TGIIKRSTSPQWNHTVVYRDVSLEELSERCLELTVWDHDRLTSNEFLGGIRLNLGHG 370
T IK++ +P+WN +R E L V+D +RLT ++FLG + + L +
Sbjct: 43 TKTIKKTLNPKWNEEFFFRVNP----REHRLLFEVFDENRLTRDDFLGQVEVPLNNL 95
>gnl|CDD|176009 cd04044, C2A_Tricalbin-like, C2 domain first repeat present in
Tricalbin-like proteins. 5 to 6 copies of the C2 domain
are present in Tricalbin, a yeast homolog of
Synaptotagmin, which is involved in membrane trafficking
and sorting. C2 domains fold into an 8-standed
beta-sandwich that can adopt 2 structural arrangements:
Type I and Type II, distinguished by a circular
permutation involving their N- and C-terminal beta
strands. Many C2 domains are Ca2+-dependent
membrane-targeting modules that bind a wide variety of
substances including bind phospholipids, inositol
polyphosphates, and intracellular proteins. Most C2
domain proteins are either signal transduction enzymes
that contain a single C2 domain, such as protein kinase
C, or membrane trafficking proteins which contain at
least two C2 domains, such as synaptotagmin 1. However,
there are a few exceptions to this including RIM
isoforms and some splice variants of piccolo/aczonin and
intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. This cd contains the first C2
repeat, C2A, and has a type-II topology.
Length = 124
Score = 49.1 bits (118), Expect = 2e-07
Identities = 34/139 (24%), Positives = 57/139 (41%), Gaps = 20/139 (14%)
Query: 122 GALEIHVKQCKDLAPVDTKRQRSDPYVKVYLLPDKSKAGKRKTRVKKHTLSPVFDEVLKF 181
G L + +K + L D DPYV + + A +T+VKK T +PV++E
Sbjct: 2 GVLAVTIKSARGLKGSDIIGGTVDPYVTFSISNRRELA---RTKVKKDTSNPVWNETKYI 58
Query: 182 QL-TLEDLECRTLWLSVWHSDMFGRND-FLGEVMMSLENKVFDDPSPK--CYPLQERSEI 237
+ +L + L L+V+ + R D +G L + + +P + L +
Sbjct: 59 LVNSLTE----PLNLTVYDFNDK-RKDKLIGTAEFDL-SSLLQNPEQENLTKNLLRNGK- 111
Query: 238 LDELICSKGELIIGLKFVP 256
GEL L+F P
Sbjct: 112 ------PVGELNYDLRFFP 124
Score = 33.7 bits (78), Expect = 0.049
Identities = 27/97 (27%), Positives = 44/97 (45%), Gaps = 9/97 (9%)
Query: 274 GSLHVLIKEAKSLCPV--KSNTVDAFCKAYLLPDKGRASKHKTGIIKRSTSPQWNHTVVY 331
G L V IK A+ L TVD + + R +T + K +++P WN T Y
Sbjct: 2 GVLAVTIKSARGLKGSDIIGGTVDPYVTFSI--SNRRELA-RTKVKKDTSNPVWNET-KY 57
Query: 332 RDVSLEELSERCLELTVWDHDRLTSNEFLGGIRLNLG 368
+ + L+E L LTV+D + ++ +G +L
Sbjct: 58 --ILVNSLTEP-LNLTVYDFNDKRKDKLIGTAEFDLS 91
Score = 29.1 bits (66), Expect = 2.0
Identities = 8/17 (47%), Positives = 13/17 (76%)
Query: 11 KTRVKKHTLSPVFDEVL 27
+T+VKK T +PV++E
Sbjct: 40 RTKVKKDTSNPVWNETK 56
>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 = 48.5 bits (116), Expect = 5e-07
Identities = 31/104 (29%), Positives = 48/104 (46%), Gaps = 2/104 (1%)
Query: 109 GEVEFGLQYNYKQGALEIHVKQCKDLAPVDTKRQRSDPYVKVYLLPDKSKAGKRKTRVKK 168
G+++ L YN L + V + + L +D + YVKV L+ +KT V
Sbjct: 2 GDIQISLTYNPTLNRLTVVVLRARGLRQLD--HAHTSVYVKVSLMIHNKVVKTKKTEVVD 59
Query: 169 HTLSPVFDEVLKFQLTLEDLECRTLWLSVWHSDMFGRNDFLGEV 212
SP F+E F++T L+ +L LSV S ++ LG V
Sbjct: 60 GAASPSFNESFSFKVTSRQLDTASLSLSVMQSGGVRKSKLLGRV 103
Score = 44.6 bits (106), Expect = 9e-06
Identities = 28/122 (22%), Positives = 53/122 (43%), Gaps = 12/122 (9%)
Query: 276 LHVLIKEAKSLCPVKSNTVDAFCKAYLLPDKGRASKHKTGIIKRSTSPQWNHTVVYRDVS 335
L V++ A+ L + + K L+ KT ++ + SP +N + ++ V+
Sbjct: 17 LTVVVLRARGLRQLDHAHTSVYVKVSLMIHNKVVKTKKTEVVDGAASPSFNESFSFK-VT 75
Query: 336 LEELSERCLELTVWDHDRLTSNEFLGGIRLNLGHGKHYSKLVDWMDSSGKEILLWQQMME 395
+L L L+V + ++ LG R+ LG +M + GKE+ W M+
Sbjct: 76 SRQLDTASLSLSVMQSGGVRKSKLLG--RVVLG---------PFMYARGKELEHWNDMLS 124
Query: 396 RP 397
+P
Sbjct: 125 KP 126
>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 = 48.0 bits (115), Expect = 7e-07
Identities = 24/81 (29%), Positives = 42/81 (51%), Gaps = 8/81 (9%)
Query: 137 VDTKRQRSDPYVKVYLLPDKSKAGKR-KTRVKKHTLSPVFDEVLKFQLTLEDLECRTLWL 195
+ K++ DPYV+V S AG++ KT VKK++ +P ++E + F L C + +
Sbjct: 28 LGEKKELVDPYVEV------SFAGQKVKTSVKKNSYNPEWNEQIVFPEMFPPL-CERIKI 80
Query: 196 SVWHSDMFGRNDFLGEVMMSL 216
+ D G +D +G + L
Sbjct: 81 QIRDWDRVGNDDVIGTHFIDL 101
Score = 36.8 bits (86), Expect = 0.006
Identities = 22/96 (22%), Positives = 42/96 (43%), Gaps = 14/96 (14%)
Query: 266 KKSSSAAKGSLHVLIKEAKSLCPVKSNTVDAFCKAYLLPDKGRASKHKTGIIKRSTSPQW 325
+ S + E K L VD + + K KT + K S +P+W
Sbjct: 14 QMDSGIMANVKKAFLGEKKEL-------VDPYVEVSFAGQKV-----KTSVKKNSYNPEW 61
Query: 326 NHTVVYRDVSLEELSERCLELTVWDHDRLTSNEFLG 361
N +V+ ++ L ER +++ + D DR+ +++ +G
Sbjct: 62 NEQIVFPEM-FPPLCER-IKIQIRDWDRVGNDDVIG 95
>gnl|CDD|227371 COG5038, COG5038, Ca2+-dependent lipid-binding protein, contains C2
domain [General function prediction only].
Length = 1227
Score = 51.3 bits (123), Expect = 7e-07
Identities = 56/209 (26%), Positives = 89/209 (42%), Gaps = 21/209 (10%)
Query: 122 GALEIHVKQCKDLAPVDTKRQR-SDPYVKVYLLPDKSKAGKRKTRVKKHTLSPVFDEVLK 180
G +E+ +K + L D+ DPY+ V S KTRVKK+TL+PV++E
Sbjct: 436 GVVEVKIKSAEGLKKSDSTINGTVDPYITVTF----SDRVIGKTRVKKNTLNPVWNET-- 489
Query: 181 FQLTLEDLECRTLWLSVWHSDMFGRNDFLGEVMMSLENKVFDDPSPKCYPLQERSEILDE 240
F + L L LS++ + F + +G + L + +P K E E L
Sbjct: 490 FYILLNSFTDP-LNLSLYDFNSFKSDKVVGSTQLDL-ALLHQNPVKK----NELYEFLRN 543
Query: 241 LICSKGELIIGLKFVPP-EDSSL--SSAKKSSSAAKGSLHVLIKEAKSLCPVKSNTVDAF 297
+ G L L+F P ED S + + G L V ++E K+L + S +
Sbjct: 544 TK-NVGRLTYDLRFFPVIEDKKELKGSVEPLEDSNTGILKVTLREVKALDELSSKKDNKS 602
Query: 298 CKAYLLPDKGRASKHKTGIIKRSTSPQWN 326
+ Y + + TG +K + P WN
Sbjct: 603 AELYTNAKE----VYSTGKLKFTNHPSWN 627
Score = 41.7 bits (98), Expect = 7e-04
Identities = 28/97 (28%), Positives = 47/97 (48%), Gaps = 7/97 (7%)
Query: 122 GALEIHVKQCKDLAPVDTKRQRSDPYVKVYLLPDKSKAGKRKTRVKKHTLSPVFDEVLKF 181
G L I ++ ++L D + SDP+VK++L KT+V K TL+PV++E
Sbjct: 1040 GYLTIMLRSGENLPSSD-ENGYSDPFVKLFLNEKSV----YKTKVVKKTLNPVWNEEFTI 1094
Query: 182 QLTLEDLECRTLWLSVWHSDMFGRNDFLGEVMMSLEN 218
++ + L ++V D +ND LG + L
Sbjct: 1095 EVLNRVKD--VLTINVNDWDSGEKNDLLGTAEIDLSK 1129
Score = 35.9 bits (83), Expect = 0.047
Identities = 25/102 (24%), Positives = 46/102 (45%), Gaps = 5/102 (4%)
Query: 266 KKSSSAAKGSLHVLIKEAKSLCPVKSNTVDAFCKAYLLPDKGRASKHKTGIIKRSTSPQW 325
S A G + V IK A+ L +T++ Y+ KT + K + +P W
Sbjct: 428 AGDSGTAIGVVEVKIKSAEGL-KKSDSTINGTVDPYITVTFSDRVIGKTRVKKNTLNPVW 486
Query: 326 NHTVVYRDVSLEELSERCLELTVWDHDRLTSNEFLGGIRLNL 367
N T + L ++ L L+++D + S++ +G +L+L
Sbjct: 487 NETFY---ILLNSFTDP-LNLSLYDFNSFKSDKVVGSTQLDL 524
Score = 30.5 bits (69), Expect = 2.2
Identities = 13/33 (39%), Positives = 20/33 (60%), Gaps = 4/33 (12%)
Query: 5 SKAGKRKTRVKKHTLSPVFDE----VLKTAGER 33
S KTRVKK+TL+PV++E +L + +
Sbjct: 468 SDRVIGKTRVKKNTLNPVWNETFYILLNSFTDP 500
Score = 30.5 bits (69), Expect = 2.2
Identities = 22/92 (23%), Positives = 37/92 (40%), Gaps = 14/92 (15%)
Query: 274 GSLHVLIKEAKSLCPVKSNTV-DAFCKAYLLPDKGRASKHKTGIIKRSTSPQWNHTVVYR 332
G L ++++ ++L N D F K +L +K +K++ +P WN
Sbjct: 1040 GYLTIMLRSGENLPSSDENGYSDPFVKLFLNEKSVYKTKV----VKKTLNPVWNEEFT-- 1093
Query: 333 DVSLEELSER---CLELTVWDHDRLTSNEFLG 361
E+ R L + V D D N+ LG
Sbjct: 1094 ----IEVLNRVKDVLTINVNDWDSGEKNDLLG 1121
>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 = 46.9 bits (112), Expect = 1e-06
Identities = 41/134 (30%), Positives = 64/134 (47%), Gaps = 15/134 (11%)
Query: 124 LEIHVKQCKDLAPVDTKRQRSDPYVKVYLLPDKSKAGKRKTRVKKHTLSPVFDEVLKFQL 183
L + V +DL P D + S YV++ K++TR K L+PV++E L F +
Sbjct: 2 LVVEVVDAQDLMPKD-GQGSSSAYVELDFD-----GQKKRTRTKPKDLNPVWNEKLVFNV 55
Query: 184 T-LEDLECRTLWLSVWHSDMFGR-NDFLGEVMMSLENKVFDDPS-PKCYPLQERSEILDE 240
+ L L + V++ GR FLG V +S + V + + YPL++R L
Sbjct: 56 SDPSRLSNLVLEVYVYNDRRSGRRRSFLGRVRISGTSFVPPSEAVVQRYPLEKRG--LFS 113
Query: 241 LICSKGELIIGLKF 254
+ +GE IGLK
Sbjct: 114 RV--RGE--IGLKV 123
Score = 40.8 bits (96), Expect = 2e-04
Identities = 22/93 (23%), Positives = 39/93 (41%), Gaps = 7/93 (7%)
Query: 276 LHVLIKEAKSLCPV-KSNTVDAFCKAYLLPDKGRASKHKTGIIKRSTSPQWNHTVVYRDV 334
L V + +A+ L P + A+ + K +T + +P WN +V+
Sbjct: 2 LVVEVVDAQDLMPKDGQGSSSAYVELDFD-----GQKKRTRTKPKDLNPVWNEKLVFNVS 56
Query: 335 SLEELSERCLELTVWDHDRLT-SNEFLGGIRLN 366
LS LE+ V++ R FLG +R++
Sbjct: 57 DPSRLSNLVLEVYVYNDRRSGRRRSFLGRVRIS 89
>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 = 45.9 bits (109), Expect = 2e-06
Identities = 26/95 (27%), Positives = 42/95 (44%), Gaps = 3/95 (3%)
Query: 119 YKQGALEIHVKQCKDLAPVDTKRQRSDPYVKVYLLPDKSKAGKRKTRVKKHTLSPVFDEV 178
+ L +HV + K L T + YVK+ L PDK ++KT + +P+F E
Sbjct: 9 GQNRKLTLHVLEAKGL--RSTNSGTCNSYVKISLSPDKEVRFRQKTSTVPDSANPLFHET 66
Query: 179 LKFQLTLEDLECRTLWLSVWHSDMFGRNDFLGEVM 213
F + D + L ++VW+ R+ L M
Sbjct: 67 FSFDVNERD-YQKRLLVTVWNKLSKSRDSGLLGCM 100
Score = 42.1 bits (99), Expect = 6e-05
Identities = 27/74 (36%), Positives = 40/74 (54%), Gaps = 4/74 (5%)
Query: 276 LHVLIKEAKSLCPVKSNTVDAFCKAYLLPDKGRASKHKTGIIKRSTSPQWNHTVVYRDVS 335
LHVL EAK L S T +++ K L PDK + KT + S +P ++ T + DV+
Sbjct: 16 LHVL--EAKGLRSTNSGTCNSYVKISLSPDKEVRFRQKTSTVPDSANPLFHETFSF-DVN 72
Query: 336 LEELSERCLELTVW 349
+ +R L +TVW
Sbjct: 73 ERDYQKRLL-VTVW 85
>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 = 46.2 bits (110), Expect = 3e-06
Identities = 34/118 (28%), Positives = 50/118 (42%), Gaps = 31/118 (26%)
Query: 123 ALEIHVKQCKDLAPVDTKRQRSDPYVKVYLLPD---------KSKAGKRK---------- 163
L++ V + K L D SDPY + ++P K + RK
Sbjct: 29 VLKVTVIEAKGLLAKDVN-GFSDPYCMLGIVPASRERNSEKSKKRKSHRKKAVLKDTVPA 87
Query: 164 -----TRVKKHTLSPVFDEVLKFQLTLEDLECRTLWLSVWHSDMFGRNDFLGEVMMSL 216
T VK TL+PV++E F+ +ED+ L L +W D +DFLG V + L
Sbjct: 88 KSIKVTEVKPQTLNPVWNE--TFRFEVEDVSNDQLHLDIWDHD----DDFLGCVNIPL 139
Score = 32.7 bits (75), Expect = 0.16
Identities = 28/127 (22%), Positives = 47/127 (37%), Gaps = 32/127 (25%)
Query: 267 KSSSAAKGSLHVLIKEAKSLCPVKSN-TVDAFCKAYLLPD-------------------- 305
+ + L V + EAK L N D +C ++P
Sbjct: 21 REAEPPIFVLKVTVIEAKGLLAKDVNGFSDPYCMLGIVPASRERNSEKSKKRKSHRKKAV 80
Query: 306 -KGRASK---HKTGIIKRSTSPQWNHTVVYRDVSLEELSERCLELTVWDHDRLTSNEFLG 361
K T + ++ +P WN T + +E++S L L +WDHD ++FLG
Sbjct: 81 LKDTVPAKSIKVTEVKPQTLNPVWNETFRF---EVEDVSNDQLHLDIWDHD----DDFLG 133
Query: 362 GIRLNLG 368
+ + L
Sbjct: 134 CVNIPLK 140
>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 = 45.8 bits (109), Expect = 4e-06
Identities = 30/113 (26%), Positives = 58/113 (51%), Gaps = 9/113 (7%)
Query: 122 GALEIHVKQCKDLAPVDTKRQRSDPYVKVYLLPDKSKAGKRKTRVKKHTLSPVFDEVLKF 181
G L + + + +DL P + +SDPY +V + + + KT+V TL+P ++ ++F
Sbjct: 15 GRLMVVIVEGRDLKPCN-SNGKSDPYCEVSM-----GSQEHKTKVVSDTLNPKWNSSMQF 68
Query: 182 QLTLEDLECRTLWLSVWHSDMFGRNDFLGEVMMSLENKVFDDPSPKCYPLQER 234
+ +DLE L ++V+ D F +DFLG + + + + P+ +R
Sbjct: 69 FV--KDLEQDVLCITVFDRDFFSPDDFLGRTEIRVA-DILKETKESKGPITKR 118
Score = 44.7 bits (106), Expect = 9e-06
Identities = 27/99 (27%), Positives = 54/99 (54%), Gaps = 9/99 (9%)
Query: 264 SAKKSSSAAKGSLHVLIKEAKSLCPVKSN-TVDAFCKAYLLPDKGRASKHKTGIIKRSTS 322
A+ ++ G L V+I E + L P SN D +C+ + + +HKT ++ + +
Sbjct: 5 LARSQRASGIGRLMVVIVEGRDLKPCNSNGKSDPYCEVSM-----GSQEHKTKVVSDTLN 59
Query: 323 PQWNHTVVYRDVSLEELSERCLELTVWDHDRLTSNEFLG 361
P+WN ++ + +++L + L +TV+D D + ++FLG
Sbjct: 60 PKWNSSMQF---FVKDLEQDVLCITVFDRDFFSPDDFLG 95
>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 = 43.1 bits (102), Expect = 3e-05
Identities = 31/110 (28%), Positives = 50/110 (45%), Gaps = 2/110 (1%)
Query: 110 EVEFGLQYNYKQGALEIHVKQCKDLAPVDTKRQRSDPYVKVYLLPDKSKA-GKRKTRVKK 168
E+ GL+YN G L + V + + + + D YVK+ LL + K KT +++
Sbjct: 3 ELLLGLEYNALTGRLSVEVIKGSNFKNL-AMNKAPDTYVKLTLLNSDGQEISKSKTSIRR 61
Query: 169 HTLSPVFDEVLKFQLTLEDLECRTLWLSVWHSDMFGRNDFLGEVMMSLEN 218
P F E FQ+ L L TL SV++ R + +G + L +
Sbjct: 62 GQPDPEFKETFVFQVALFQLSEVTLMFSVYNKRKMKRKEMIGWFSLGLNS 111
Score = 37.7 bits (88), Expect = 0.003
Identities = 31/105 (29%), Positives = 49/105 (46%), Gaps = 16/105 (15%)
Query: 295 DAFCKAYLLPDKGRA-SKHKTGIIKRSTSPQWNHTVVYRDVSLEELSERCLELTVWDHDR 353
D + K LL G+ SK KT I + P++ T V++ V+L +LSE L +V++ +
Sbjct: 37 DTYVKLTLLNSDGQEISKSKTSIRRGQPDPEFKETFVFQ-VALFQLSEVTLMFSVYNKRK 95
Query: 354 LTSNEFLGGIRLNLGHGKHYSKLVDWMDSSGK-EILLWQQMMERP 397
+ E +G L L +SSG+ E W +M E
Sbjct: 96 MKRKEMIGWFSLGL-------------NSSGEEEEEHWNEMKESK 127
>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 = 42.6 bits (101), Expect = 4e-05
Identities = 31/89 (34%), Positives = 43/89 (48%), Gaps = 10/89 (11%)
Query: 138 DTKRQRSDPYVKVYLLPDKSKAGKR---KTRVKKHTLSPVFDEVLKFQLTLEDLECRTLW 194
D+ SDPYV L D + GKR KTR TL+P +DE F+L + E +
Sbjct: 16 DSSNGLSDPYV---TLVDTN--GKRRIAKTRTIYDTLNPRWDEE--FELEVPAGEPLWIS 68
Query: 195 LSVWHSDMFGRNDFLGEVMMSLENKVFDD 223
+VW G++D G + L+ K F D
Sbjct: 69 ATVWDRSFVGKHDLCGRASLKLDPKRFGD 97
Score = 33.4 bits (77), Expect = 0.058
Identities = 12/60 (20%), Positives = 24/60 (40%), Gaps = 4/60 (6%)
Query: 303 LPDKGRASKH-KTGIIKRSTSPQWNHTVVYRDVSLEELSERCLELTVWDHDRLTSNEFLG 361
L D + KT I + +P+W+ ++ + + TVWD + ++ G
Sbjct: 28 LVDTNGKRRIAKTRTIYDTLNPRWDEEF---ELEVPAGEPLWISATVWDRSFVGKHDLCG 84
>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 = 42.2 bits (100), Expect = 5e-05
Identities = 21/58 (36%), Positives = 34/58 (58%), Gaps = 5/58 (8%)
Query: 122 GALEIHVKQCKDLAPVDTKRQRSDPYVKVYLLPDKSKAGKRKTRVKKHTLSPVFDEVL 179
G L +H+++ DL ++ + DPYV+V L+ K +T +TL+PV+DEVL
Sbjct: 1 GVLRLHIRKANDLKNLEGVG-KIDPYVRV-LVNGIVKG---RTVTISNTLNPVWDEVL 53
>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 = 41.8 bits (99), Expect = 6e-05
Identities = 23/82 (28%), Positives = 43/82 (52%), Gaps = 10/82 (12%)
Query: 143 RSDPYVKVY-LLPDKSKAGKRKTRVKKHTLSPVFDEVLKFQLTLEDLEC-----RTLWLS 196
+SDP++++ D + +T V K+TL+PV+ F + L+ L C R + +
Sbjct: 20 KSDPFLEISRQSEDGTWVLVYRTEVIKNTLNPVWKP---FTIPLQKL-CNGDYDRPIKIE 75
Query: 197 VWHSDMFGRNDFLGEVMMSLEN 218
V+ D G++D +GE +L+
Sbjct: 76 VYDYDSSGKHDLIGEFETTLDE 97
Score = 34.5 bits (80), Expect = 0.020
Identities = 12/54 (22%), Positives = 29/54 (53%), Gaps = 8/54 (14%)
Query: 312 HKTGIIKRSTSPQWNHTVVYRDVSLEEL----SERCLELTVWDHDRLTSNEFLG 361
++T +IK + +P W + L++L +R +++ V+D+D ++ +G
Sbjct: 40 YRTEVIKNTLNPVWKP----FTIPLQKLCNGDYDRPIKIEVYDYDSSGKHDLIG 89
>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 = 41.1 bits (97), Expect = 1e-04
Identities = 33/105 (31%), Positives = 50/105 (47%), Gaps = 17/105 (16%)
Query: 122 GALEIHVKQCKDLAPVDTKRQRS---------DPYVKVYLLPDKSKAGKRKTRVKKHTLS 172
G L+I + + DL P D + + DPYV + + D + GK T+ K T S
Sbjct: 4 GTLKIKICEAVDLKPTDWSTRHAVPKKGSQLLDPYVSIDV--DDTHIGKTSTKPK--TNS 59
Query: 173 PVFDEVLKFQLTLEDLECRTLWLSVWHSDMFGRNDFLGEVMMSLE 217
PV++E + T E R L L+V+H G +DF+ +S E
Sbjct: 60 PVWNE----EFTTEVHNGRNLELTVFHDAAIGPDDFVANCTISFE 100
>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 = 40.7 bits (96), Expect = 2e-04
Identities = 30/89 (33%), Positives = 45/89 (50%), Gaps = 12/89 (13%)
Query: 132 KDLAPVDTKRQRSDPYVKVYLLPDKSKAG--KRKTRVKKHTLSPVFDEVLKFQLTLEDLE 189
K+L P+D SDPYVK L G K K++V TL+P + E +F L L D +
Sbjct: 10 KNLPPMDDNGL-SDPYVKFRL-------GNEKYKSKVCSKTLNPQWLE--QFDLHLFDDQ 59
Query: 190 CRTLWLSVWHSDMFGRNDFLGEVMMSLEN 218
+ L + VW D +++F+G + L
Sbjct: 60 SQILEIEVWDKDTGKKDEFIGRCEIDLSA 88
Score = 34.5 bits (80), Expect = 0.019
Identities = 26/85 (30%), Positives = 43/85 (50%), Gaps = 10/85 (11%)
Query: 278 VLIKEAKSLCPVKSNTV-DAFCKAYLLPDKGRASKHKTGIIKRSTSPQWNHTVVYRDVSL 336
VL+ E K+L P+ N + D + K L K+K+ + ++ +PQW D+ L
Sbjct: 5 VLV-EGKNLPPMDDNGLSDPYVKFRL-----GNEKYKSKVCSKTLNPQWLEQF---DLHL 55
Query: 337 EELSERCLELTVWDHDRLTSNEFLG 361
+ + LE+ VWD D +EF+G
Sbjct: 56 FDDQSQILEIEVWDKDTGKKDEFIG 80
>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 = 40.7 bits (95), Expect = 2e-04
Identities = 29/95 (30%), Positives = 48/95 (50%), Gaps = 7/95 (7%)
Query: 123 ALEIHVKQCKDLAPVDTKRQRSDPYVKVYLLPDKSKAGKRKTRVKKHTLSPVFDEVLKFQ 182
A +H Q K L +D VKV L +K K++T+ KH ++PV++E++ F+
Sbjct: 24 AKNLHSDQLKLLLGIDVS-------VKVTLKHQNAKLKKKQTKRAKHKINPVWNEMIMFE 76
Query: 183 LTLEDLECRTLWLSVWHSDMFGRNDFLGEVMMSLE 217
L E L ++ L V + D G++ LG + L
Sbjct: 77 LPSELLAASSVELEVLNQDSPGQSLPLGRCSLGLH 111
Score = 28.8 bits (64), Expect = 2.8
Identities = 35/155 (22%), Positives = 66/155 (42%), Gaps = 32/155 (20%)
Query: 246 GELIIGLKFVPPEDSSLSSAKKSSSAAKGSLHVLIKEAKSLCPVKSN---TVDAFCKAYL 302
GE+++ + ++P A L V++ +AK+L + +D K L
Sbjct: 2 GEVLLSISYLP---------------AANRLLVVVIKAKNLHSDQLKLLLGIDVSVKVTL 46
Query: 303 LPDKGRASKHKTGIIKRSTSPQWNHTVVYRDVSLEELSERCLELTVWDHDRLTSNEFLGG 362
+ K +T K +P WN +++ ++ E L+ +EL V + D + LG
Sbjct: 47 KHQNAKLKKKQTKRAKHKINPVWNEMIMF-ELPSELLAASSVELEVLNQDSPGQSLPLG- 104
Query: 363 IRLNLGHGKHYSKLVDWMDSSGKEILLWQQMMERP 397
R +LG + +SG E W++M++ P
Sbjct: 105 -RCSLG-----------LHTSGTERQHWEEMLDNP 127
>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 = 38.8 bits (91), Expect = 7e-04
Identities = 23/92 (25%), Positives = 38/92 (41%), Gaps = 9/92 (9%)
Query: 124 LEIHVKQCKDLAPVDTKRQRSDPYVKVYLLPDKSKAGKRKTRVKKHTLSPVFDEVLKFQL 183
L + + + K+L + DPY V L D+ + + KT K L+P + E F
Sbjct: 2 LRLRILEAKNLPS----KGTRDPYCTVSL--DQVEVARTKTVEK---LNPFWGEEFVFDD 52
Query: 184 TLEDLECRTLWLSVWHSDMFGRNDFLGEVMMS 215
D+ TL R+ +G+V +S
Sbjct: 53 PPPDVTFFTLSFYNKDKRSKDRDIVIGKVALS 84
>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 = 38.8 bits (91), Expect = 0.001
Identities = 27/112 (24%), Positives = 55/112 (49%), Gaps = 7/112 (6%)
Query: 109 GEVEFGLQYNYKQGALEIHVKQCKDLAPVDTKRQRSDPY-VKVYLLPDKSKAGKRKTRVK 167
G+++ +Y+ L + V + +D+ D R + + V + LLP SK + KT+V+
Sbjct: 3 GDLDVAFEYDPSARKLTVTVIRAQDIPTKD--RGGASSWQVHLVLLP--SKKQRAKTKVQ 58
Query: 168 KHTLSPVFDEVLKF-QLTLEDLECRTLWLSVWHSDMFGRNDFLGEVMMSLEN 218
+ +PVF+E F ++ E+L L ++ + + +GE ++ L
Sbjct: 59 RGP-NPVFNETFTFSRVEPEELNNMALRFRLYGVERMRKERLIGEKVVPLSQ 109
>gnl|CDD|176019 cd08373, C2A_Ferlin, C2 domain first repeat in Ferlin. Ferlins are
involved in vesicle fusion events. Ferlins and other
proteins, such as Synaptotagmins, are implicated in
facilitating the fusion process when cell membranes fuse
together. There are six known human Ferlins: Dysferlin
(Fer1L1), Otoferlin (Fer1L2), Myoferlin (Fer1L3),
Fer1L4, Fer1L5, and Fer1L6. Defects in these genes can
lead to a wide range of diseases including muscular
dystrophy (dysferlin), deafness (otoferlin), and
infertility (fer-1, fertilization factor-1).
Structurally they have 6 tandem C2 domains, designated
as (C2A-C2F) and a single C-terminal transmembrane
domain, though there is a new study that disputes this
and claims that there are actually 7 tandem C2 domains
with another C2 domain inserted between C2D and C2E.
In a subset of them (Dysferlin, Myoferlin, and Fer1)
there is an additional conserved domain called DysF. C2
domains fold into an 8-standed beta-sandwich that can
adopt 2 structural arrangements: Type I and Type II,
distinguished by a circular permutation involving their
N- and C-terminal beta strands. Many C2 domains are
Ca2+-dependent membrane-targeting modules that bind a
wide variety of substances including bind phospholipids,
inositol polyphosphates, and intracellular proteins.
Most C2 domain proteins are either signal transduction
enzymes that contain a single C2 domain, such as protein
kinase C, or membrane trafficking proteins which contain
at least two C2 domains, such as synaptotagmin 1.
However, there are a few exceptions to this including
RIM isoforms and some splice variants of piccolo/aczonin
and intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. This cd contains the first C2
repeat, C2A, and has a type-II topology.
Length = 127
Score = 38.4 bits (90), Expect = 0.001
Identities = 25/97 (25%), Positives = 41/97 (42%), Gaps = 19/97 (19%)
Query: 124 LEIHVKQCKDLAPVDTKRQRSDPYVKVYLLPDKSKAGKRKTRVKKHTLSPVFDEVLKFQL 183
L + +K L + D KV + K+KTRV ++ L+PV++E ++ L
Sbjct: 1 LVVSLKNLPGLKG------KGDRIAKVTF-----RGVKKKTRVLENELNPVWNETFEWPL 49
Query: 184 T--LEDLECRTLWLSVWHSDM--FGRNDFLGEVMMSL 216
+ E L + D GRN +G +SL
Sbjct: 50 AGSPDPDE----SLEIVVKDYEKVGRNRLIGSATVSL 82
Score = 30.3 bits (69), Expect = 0.73
Identities = 18/83 (21%), Positives = 37/83 (44%), Gaps = 4/83 (4%)
Query: 308 RASKHKTGIIKRSTSPQWNHTVVYRDVSLEELSERCLELTVWDHDRLTSNEFLGGIRLNL 367
R K KT +++ +P WN T + ++ + LE+ V D++++ N +G ++L
Sbjct: 24 RGVKKKTRVLENELNPVWNETFEW-PLAGSPDPDESLEIVVKDYEKVGRNRLIGSATVSL 82
Query: 368 GH---GKHYSKLVDWMDSSGKEI 387
+DS+G+
Sbjct: 83 QDLVSEGLLEVTEPLLDSNGRPT 105
Score = 29.1 bits (66), Expect = 1.9
Identities = 9/19 (47%), Positives = 15/19 (78%)
Query: 9 KRKTRVKKHTLSPVFDEVL 27
K+KTRV ++ L+PV++E
Sbjct: 27 KKKTRVLENELNPVWNETF 45
>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 = 38.0 bits (89), Expect = 0.002
Identities = 29/116 (25%), Positives = 53/116 (45%), Gaps = 26/116 (22%)
Query: 126 IHVKQCKDLAPVDTKRQRSDPYVKVYLLPDKSKAGKRKTRVKKHTLSPVFDEVLKF---- 181
+HV + L+ D+ +DPYV + K + ++ V+K TLSP FD F
Sbjct: 7 VHVHSAEGLSKQDSGG-GADPYVII-----KCEGESVRSPVQKDTLSPEFDTQAIFYRKK 60
Query: 182 ---QLTLEDLECRTLWLSVWHSDMFGRNDFLGEVMMSLENKVFDDPSPKCYPLQER 234
+ ++ VW+S++ +FLG+ +S + D + + PL++R
Sbjct: 61 PRSPIKIQ----------VWNSNLLCD-EFLGQATLSAD--PNDSQTLRTLPLRKR 103
Score = 27.2 bits (61), Expect = 8.5
Identities = 8/15 (53%), Positives = 11/15 (73%)
Query: 11 KTRVKKHTLSPVFDE 25
++ V+K TLSP FD
Sbjct: 38 RSPVQKDTLSPEFDT 52
>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 = 37.6 bits (88), Expect = 0.002
Identities = 29/126 (23%), Positives = 54/126 (42%), Gaps = 16/126 (12%)
Query: 122 GALEIHVKQCKDLAPVDTKRQRSDPYVKVYLLPDKSKAG-KRKTRV-KKHTLSPVFDEVL 179
G L + V + ++L P K + DPY + + G +KT+ + P +DE L
Sbjct: 1 GTLVVVVLKARNL-PNKRKLDKQDPYCVLRI------GGVTKKTKTDFRGGQHPEWDEEL 53
Query: 180 KFQLTLEDLECRTLWLSVWHSDMFGRNDFLGEVMMSLENKVFDDPSPKCYPLQ----ERS 235
+F++T + L ++V+ D + D +G+ + L + + Y L
Sbjct: 54 RFEITEDKK--PILKVAVFDDD-KRKPDLIGDTEVDLSPALKEGEFDDWYELTLKGRYAG 110
Query: 236 EILDEL 241
E+ EL
Sbjct: 111 EVYLEL 116
>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 = 37.6 bits (87), Expect = 0.002
Identities = 19/56 (33%), Positives = 30/56 (53%)
Query: 163 KTRVKKHTLSPVFDEVLKFQLTLEDLECRTLWLSVWHSDMFGRNDFLGEVMMSLEN 218
+T +KK L ++E L F L E+ TL L++ D F R+ LGE+ + L +
Sbjct: 50 QTALKKLALHTQWEEELVFPLPEEESLDGTLTLTLRCCDRFSRHSTLGELRLKLAD 105
Score = 34.5 bits (79), Expect = 0.023
Identities = 29/98 (29%), Positives = 48/98 (48%), Gaps = 10/98 (10%)
Query: 273 KGSLHVLIKEAKSLCPVKSNTVDAFCKAYL---LPDKGRASKHKTGIIKRSTSPQWNHTV 329
K LHV I EA+++ +VDA C+ Y+ + + +T + K + QW +
Sbjct: 13 KAELHVNILEAENI------SVDAGCECYISGCVSVSEGQKEAQTALKKLALHTQWEEEL 66
Query: 330 VYRDVSLEELSERCLELTVWDHDRLTSNEFLGGIRLNL 367
V+ + EE + L LT+ DR + + LG +RL L
Sbjct: 67 VF-PLPEEESLDGTLTLTLRCCDRFSRHSTLGELRLKL 103
>gnl|CDD|178538 PLN02952, PLN02952, phosphoinositide phospholipase C.
Length = 599
Score = 39.6 bits (92), Expect = 0.002
Identities = 20/67 (29%), Positives = 36/67 (53%), Gaps = 2/67 (2%)
Query: 145 DPYVKVYLLPDKSKAGKRKTRVKKHTLSPVFDEVLKFQLTLEDLECRTLWLSVWHSDMFG 204
D Y K+Y++ + K+KT++ + P ++E F LT+ +L L + V DM
Sbjct: 498 DFYTKMYIVGVPADNAKKKTKIIEDNWYPAWNEEFSFPLTVPELA--LLRIEVREYDMSE 555
Query: 205 RNDFLGE 211
++DF G+
Sbjct: 556 KDDFGGQ 562
>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 = 37.4 bits (87), Expect = 0.003
Identities = 25/73 (34%), Positives = 36/73 (49%), Gaps = 5/73 (6%)
Query: 160 GKRK--TRVKKHTLSPVFDEVLKF---QLTLEDLECRTLWLSVWHSDMFGRNDFLGEVMM 214
GK K T VK+ T SPV+ E F L + TL L+V H ++ G + FLG+V +
Sbjct: 29 GKEKYSTSVKEKTTSPVWKEECSFELPGLLSGNGNRATLQLTVMHRNLLGLDKFLGQVSI 88
Query: 215 SLENKVFDDPSPK 227
L + D +
Sbjct: 89 PLNDLDEDKGRRR 101
Score = 32.8 bits (75), Expect = 0.093
Identities = 27/114 (23%), Positives = 47/114 (41%), Gaps = 10/114 (8%)
Query: 277 HVLIKEAKSL-CPVKSNTVDAFCKAYLLPDKGRASKHKTGIIKRSTSPQWNHTVVYR--D 333
V + +A+ L C KS T DA+ L +K + T + +++TSP W +
Sbjct: 2 QVTVLQARGLLCKGKSGTNDAYVIIQLGKEK-----YSTSVKEKTTSPVWKEECSFELPG 56
Query: 334 VSLEELSERCLELTVWDHDRLTSNEFLGGIRLNLG--HGKHYSKLVDWMDSSGK 385
+ + L+LTV + L ++FLG + + L + W K
Sbjct: 57 LLSGNGNRATLQLTVMHRNLLGLDKFLGQVSIPLNDLDEDKGRRRTRWFKLESK 110
>gnl|CDD|175998 cd04032, C2_Perforin, C2 domain of Perforin. Perforin contains a
single copy of a C2 domain in its C-terminus and plays a
role in lymphocyte-mediated cytotoxicity. Mutations in
perforin leads to familial hemophagocytic
lymphohistiocytosis type 2. The function of perforin is
calcium dependent and the C2 domain is thought to confer
this binding to target cell membranes. C2 domains fold
into an 8-standed beta-sandwich that can adopt 2
structural arrangements: Type I and Type II,
distinguished by a circular permutation involving their
N- and C-terminal beta strands. Many C2 domains are
Ca2+-dependent membrane-targeting modules that bind a
wide variety of substances including bind phospholipids,
inositol polyphosphates, and intracellular proteins.
Most C2 domain proteins are either signal transduction
enzymes that contain a single C2 domain, such as protein
kinase C, or membrane trafficking proteins which contain
at least two C2 domains, such as synaptotagmin 1.
However, there are a few exceptions to this including
RIM isoforms and some splice variants of piccolo/aczonin
and intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions.
Length = 127
Score = 36.5 bits (85), Expect = 0.006
Identities = 15/48 (31%), Positives = 23/48 (47%), Gaps = 2/48 (4%)
Query: 314 TGIIKRSTSPQWNHTVVYRDVSLEELSERCLELTVWDHDRLTSNEFLG 361
T +I + +P+WN T + V L + E VWD D ++ LG
Sbjct: 63 TEVIWNNNNPRWNATFDFGSVELSPGGKLRFE--VWDRDNGWDDDLLG 108
>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 = 35.0 bits (81), Expect = 0.015
Identities = 29/121 (23%), Positives = 57/121 (47%), Gaps = 25/121 (20%)
Query: 122 GALEIHVKQCKDLAPVDTKRQRSDPYVKVYLLPDKSKAGKRKTRVKKHT----LSPVFDE 177
G L++ V + LA D +SDP+ + L R++ HT L+P +++
Sbjct: 1 GFLQVKVIRASGLAAADIG-GKSDPFCVLEL---------VNARLQTHTIYKTLNPEWNK 50
Query: 178 VLKFQLTLEDLECRTLWLSVWHSDMFGRNDFLGEVM---MSLENKVFDDPSPKCYPLQER 234
+ F + +D+ L ++V+ D + +FLG+V +S++N K Y L+++
Sbjct: 51 IFTFPI--KDIH-DVLEVTVYDEDKDKKPEFLGKVAIPLLSIKNGE-----RKWYALKDK 102
Query: 235 S 235
Sbjct: 103 K 103
Score = 35.0 bits (81), Expect = 0.018
Identities = 25/91 (27%), Positives = 39/91 (42%), Gaps = 14/91 (15%)
Query: 274 GSLHVLIKEAKSLCPVK-SNTVDAFCKAYLLPDKGRASKHKTGIIKRSTSPQWNHTVVY- 331
G L V + A L D FC L ++ +T I ++ +P+WN +
Sbjct: 1 GFLQVKVIRASGLAAADIGGKSDPFCVLEL-----VNARLQTHTIYKTLNPEWNKIFTFP 55
Query: 332 -RDVSLEELSERCLELTVWDHDRLTSNEFLG 361
+D+ LE+TV+D D+ EFLG
Sbjct: 56 IKDI------HDVLEVTVYDEDKDKKPEFLG 80
>gnl|CDD|176024 cd08378, C2B_MCTP_PRT_plant, C2 domain second repeat found in
Multiple C2 domain and Transmembrane region Proteins
(MCTP); plant subset. MCTPs are involved in Ca2+
signaling at the membrane. Plant-MCTPs are composed of
a variable N-terminal sequence, four C2 domains, two
transmembrane regions (TMRs), and a short C-terminal
sequence. It is one of four protein classes that are
anchored to membranes via a transmembrane region; the
others being synaptotagmins, extended synaptotagmins,
and ferlins. MCTPs are the only membrane-bound C2 domain
proteins that contain two functional TMRs. MCTPs are
unique in that they bind Ca2+ but not phospholipids. C2
domains fold into an 8-standed beta-sandwich that can
adopt 2 structural arrangements: Type I and Type II,
distinguished by a circular permutation involving their
N- and C-terminal beta strands. Many C2 domains are
Ca2+-dependent membrane-targeting modules that bind a
wide variety of substances including bind phospholipids,
inositol polyphosphates, and intracellular proteins.
Most C2 domain proteins are either signal transduction
enzymes that contain a single C2 domain, such as protein
kinase C, or membrane trafficking proteins which contain
at least two C2 domains, such as synaptotagmin 1.
However, there are a few exceptions to this including
RIM isoforms and some splice variants of piccolo/aczonin
and intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. This cd contains the second C2
repeat, C2B, and has a type-II topology.
Length = 121
Score = 35.0 bits (81), Expect = 0.015
Identities = 27/93 (29%), Positives = 44/93 (47%), Gaps = 13/93 (13%)
Query: 124 LEIHVKQCKDLAPVDTKRQRSDPYVKVYLLPDKSKAGKRKTRVKKHTLSPVFDEVLKFQL 183
L + V + + L +DP V+V K K T+ + T +P +++V F
Sbjct: 2 LYVRVVKARGLPANS-----NDPVVEV-----KLGNYKGSTKAIERTSNPEWNQV--FAF 49
Query: 184 TLEDLECRTLWLSVWHSDMFGRNDFLGEVMMSL 216
+ + L+ TL +SVW D ++DFLG V L
Sbjct: 50 SKDRLQGSTLEVSVWDKD-KAKDDFLGGVCFDL 81
>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 = 35.7 bits (83), Expect = 0.015
Identities = 29/125 (23%), Positives = 48/125 (38%), Gaps = 20/125 (16%)
Query: 123 ALEIHVKQCKDL-APVDTKRQRSDPYVKVYLLPDKSKAGKRKTRVKKHTLSPVFDEVLKF 181
++E+ + +C + P + D YVK + KT K T SP ++E K
Sbjct: 3 SIELTIVRCIGIPLPSGWNPKDLDTYVKFEFPYPNEEPQSGKTSTIKDTNSPEYNESFKL 62
Query: 182 QLTLEDLECR------TLWLSVWHSDMFGRND-FLGEVMMSLENKVFDDPSPKCYPLQER 234
+ + + L V+H F R+D LG + LE PL+ +
Sbjct: 63 NINRKHRSFQRVFKRHGLKFEVYHKGGFLRSDKLLGTAQVKLE------------PLETK 110
Query: 235 SEILD 239
EI +
Sbjct: 111 CEIHE 115
Score = 28.4 bits (64), Expect = 4.3
Identities = 9/25 (36%), Positives = 11/25 (44%)
Query: 9 KRKTRVKKHTLSPVFDEVLKTAGER 33
KT K T SP ++E K R
Sbjct: 42 SGKTSTIKDTNSPEYNESFKLNINR 66
>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 = 35.1 bits (81), Expect = 0.017
Identities = 27/80 (33%), Positives = 40/80 (50%), Gaps = 11/80 (13%)
Query: 146 PYVKVYL----LPDKSKAGKRKTRVKKHTLSPVFDEVLKFQLTLED-LECRTLWLSVWHS 200
P+V+V L L DK + K T+ K + SP ++E +F L ED E L + V
Sbjct: 22 PFVEVNLIGPHLSDKKR--KFATKSKNNNWSPKYNETFQFILGNEDDPESYELHICV--K 77
Query: 201 DM-FGRNDFL-GEVMMSLEN 218
D F R+D L G ++ L +
Sbjct: 78 DYCFARDDRLVGVTVLQLRD 97
>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 = 33.4 bits (77), Expect = 0.051
Identities = 14/56 (25%), Positives = 27/56 (48%), Gaps = 7/56 (12%)
Query: 312 HKTGIIKRSTSPQWNHTVVYRDVSLEELSERCLELTVWDHDRL--TSNEFLGGIRL 365
H T + K++ P+WN D+++ S + + V+D + FLG +R+
Sbjct: 35 HSTDVAKKTLDPKWNEH---FDLTVGPSS--IITIQVFDQKKFKKKDQGFLGCVRI 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 = 33.5 bits (77), Expect = 0.055
Identities = 14/55 (25%), Positives = 29/55 (52%), Gaps = 8/55 (14%)
Query: 309 ASKHKTGIIKRSTSPQWNHTVVYRDVSLEELSERCLEL--TVWDHDRLTSNEFLG 361
K+++ K +++P W+ ++ ELS EL V+D+ + + ++FLG
Sbjct: 30 PQKYQSSTQKNTSNPFWDEHFLF------ELSPNSKELLFEVYDNGKKSDSKFLG 78
Score = 29.3 bits (66), Expect = 1.5
Identities = 26/119 (21%), Positives = 52/119 (43%), Gaps = 11/119 (9%)
Query: 144 SDPYVKVYLLPDKSKAGKRKTRVKKHTLSPVFDEVLKFQLTLEDLECRTLWLSVWHSDMF 203
S+PY + + K ++ +K+T +P +DE F+L+ + L V+ +
Sbjct: 18 SNPYCVLEM---DEPPQKYQSSTQKNTSNPFWDEHFLFELSPNS---KELLFEVYDNGKK 71
Query: 204 GRNDFLGEVMMSLENKVFDDPSPKCYPLQERSEILDELICSKGELIIGLKFVPPEDSSL 262
+ FLG ++ + + + +PLQ R D + G I ++F+ E + L
Sbjct: 72 SDSKFLGLAIVPFDELRKNPSGRQIFPLQGRPYEGDSV---SGS--ITVEFLFMEPAEL 125
>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 = 32.2 bits (74), Expect = 0.16
Identities = 18/57 (31%), Positives = 28/57 (49%), Gaps = 5/57 (8%)
Query: 313 KTGIIKRSTSPQWNHTVVYRDVSLEELSERCLELTVWDHDRLTSNEFLGGIRLNLGH 369
KT + K++++P+WN V + S LE VW H L ++ LG L+L
Sbjct: 37 KTEVSKKTSNPKWNEHFT---VLVTPQST--LEFKVWSHHTLKADVLLGEASLDLSD 88
>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 = 31.8 bits (73), Expect = 0.17
Identities = 15/58 (25%), Positives = 32/58 (55%), Gaps = 6/58 (10%)
Query: 124 LEIHVKQCKDLAPVDTKRQRSDPYVKVYLLPDKSKAGKRKTRVKKHTLSPVFDEVLKF 181
L +++ K+L P+ + PYV++ + + +K++VK+ T +PV++E F
Sbjct: 2 LFVYLDSAKNL-PLAKSTKEPSPYVEL-TVGKTT----QKSKVKERTNNPVWEEGFTF 53
>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 = 31.5 bits (72), Expect = 0.29
Identities = 11/24 (45%), Positives = 18/24 (75%)
Query: 344 LELTVWDHDRLTSNEFLGGIRLNL 367
L L VWD+D+ + ++FLG + L+L
Sbjct: 95 LTLQVWDNDKFSPDDFLGSLELDL 118
Score = 31.5 bits (72), Expect = 0.36
Identities = 29/115 (25%), Positives = 48/115 (41%), Gaps = 28/115 (24%)
Query: 128 VKQCKDLAPVD---TKRQRSDPYVKVYLLPDKSKAGKRKTRVKKHTLS------------ 172
V +D+ D T + SD YVK +L + K+KT V +L
Sbjct: 6 VWNTRDVLNDDTNITGEKMSDIYVKGWLDGLEED--KQKTDVHYRSLDGEGNFNWRFVFP 63
Query: 173 ----PVFDEVLKFQ----LTLEDLECR---TLWLSVWHSDMFGRNDFLGEVMMSL 216
P +++ + +L++ E + L L VW +D F +DFLG + + L
Sbjct: 64 FDYLPAEKKIVVIKKEHFWSLDETEYKIPPKLTLQVWDNDKFSPDDFLGSLELDL 118
>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 = 31.4 bits (72), Expect = 0.33
Identities = 22/83 (26%), Positives = 36/83 (43%), Gaps = 13/83 (15%)
Query: 295 DAFCKAYLL-PDKGRASKH-KTGIIKRSTSPQWNHTVV--YRDVSLEELSERCLELTVWD 350
D F Y+ G+ + +T +IK + +P + T Y EE+ + L V+D
Sbjct: 22 DPFVVVYVKTGGSGQWVEIGRTEVIKNNLNPDFVTTFTVDYY---FEEVQK--LRFEVYD 76
Query: 351 HD----RLTSNEFLGGIRLNLGH 369
D L+ ++FLG LG
Sbjct: 77 VDSKSKDLSDHDFLGEAECTLGE 99
>gnl|CDD|215629 PLN03200, PLN03200, cellulose synthase-interactive protein;
Provisional.
Length = 2102
Score = 33.2 bits (76), Expect = 0.35
Identities = 20/53 (37%), Positives = 27/53 (50%), Gaps = 5/53 (9%)
Query: 274 GSLHVLIKEAKSLCPVKSNTVDAFCKAYLLPDKGRASKHKTGIIKRSTSPQWN 326
GSL V IK +L NT +AFCK L G +T ++ S+SP+W
Sbjct: 1980 GSLTVTIKRGNNLKQSMGNT-NAFCKLTL----GNGPPRQTKVVSHSSSPEWK 2027
>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 = 30.3 bits (69), Expect = 0.70
Identities = 17/44 (38%), Positives = 23/44 (52%), Gaps = 3/44 (6%)
Query: 309 ASKHKTGIIKRSTSPQWNHTVVYRDVSLEELSERCLELTVWDHD 352
K +T IK S +P WN T +R ++ + LELTV D D
Sbjct: 34 DEKKRTKTIKNSINPVWNETFEFR---IQSQVKNVLELTVMDED 74
Score = 29.9 bits (68), Expect = 1.0
Identities = 13/40 (32%), Positives = 28/40 (70%), Gaps = 2/40 (5%)
Query: 144 SDPYVKVYLLPDKSKAGKRKTRVKKHTLSPVFDEVLKFQL 183
D YV+++L P S K++T+ K++++PV++E +F++
Sbjct: 21 PDCYVELWL-PTAS-DEKKRTKTIKNSINPVWNETFEFRI 58
>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 = 30.3 bits (69), Expect = 0.75
Identities = 20/96 (20%), Positives = 39/96 (40%), Gaps = 7/96 (7%)
Query: 275 SLHVLIKEAKSLCPVKSNT-VDAFCKAYLLPDKGRASKHKTGI-IKRSTSPQWNHTVVYR 332
+L + I A+ L V + + ++ P K T + T+P WN T+ +
Sbjct: 1 TLEITIISAEDLKNVNLFGKMKVYAVVWIDPS----HKQSTPVDRDGGTNPTWNETLRFP 56
Query: 333 -DVSLEELSERCLELTVWDHDRLTSNEFLGGIRLNL 367
D L + L + V+ ++ +G +R+ L
Sbjct: 57 LDERLLQQGRLALTIEVYCERPSLGDKLIGEVRVPL 92
>gnl|CDD|239766 cd04100, Asp_Lys_Asn_RS_N, Asp_Lys_Asn_RS_N: N-terminal, anticodon
recognition domain of class 2b aminoacyl-tRNA
synthetases (aaRSs). This domain is a beta-barrel domain
(OB fold) involved in binding the tRNA anticodon
stem-loop. Class 2b aaRSs include the homodimeric
aspartyl-, asparaginyl-, and lysyl-tRNA synthetases
(AspRS, AsnRS, and LysRS). aaRSs catalyze the specific
attachment of amino acids (AAs) to their cognate tRNAs
during protein biosynthesis. This 2-step reaction
involves i) the activation of the AA by ATP in the
presence of magnesium ions, followed by ii) the transfer
of the activated AA to the terminal ribose of tRNA. In
the case of the class2b aaRSs, the activated AA is
attached to the 3'OH of the terminal ribose. Eukaryotes
contain 2 sets of aaRSs, both of which are encoded by
the nuclear genome. One set concerns with cytoplasmic
protein synthesis, whereas the other exclusively with
mitochondrial protein synthesis. Included in this group
are archeal and archeal-like AspRSs which are
non-discriminating and can charge both tRNAAsp and
tRNAAsn. E. coli cells have two isoforms of LysRSs (LysS
and LysU) encoded by two distinct genes, which are
differentially regulated. The cytoplasmic and the
mitochondrial isoforms of human LysRS are encoded by a
single gene. Yeast cytoplasmic and mitochondrial LysRSs
participate in mitochondrial import of cytoplasmic
tRNAlysCUU. In addition to their housekeeping role,
human LysRS may function as a signaling molecule that
activates immune cells. Tomato LysRS may participate in
a process possibly connected to conditions of
oxidative-stress conditions or heavy metal uptake. It is
known that human tRNAlys and LysRS are specifically
packaged into HIV-1 suggesting a role for LysRS in tRNA
packaging. AsnRS is immunodominant antigen of the
filarial nematode Brugia malayai and is of interest as a
target for anti-parasitic drug design. Human AsnRS has
been shown to be a pro-inflammatory chemokine which
interacts with CCR3 chemokine receptors on T cells,
immature dendritic cells and macrophages.
Length = 85
Score = 29.1 bits (66), Expect = 0.99
Identities = 10/49 (20%), Positives = 21/49 (42%), Gaps = 1/49 (2%)
Query: 85 ARSDSMASVYSGAGEGRYGSVI-VKGEVEFGLQYNYKQGALEIHVKQCK 132
+ + + A + R SV+ V G V + N G +E+ ++ +
Sbjct: 33 VNKEELGEFFEEAEKLRTESVVGVTGTVVKRPEGNLATGEIELQAEELE 81
>gnl|CDD|176017 cd04052, C2B_Tricalbin-like, C2 domain second repeat present in
Tricalbin-like proteins. 5 to 6 copies of the C2 domain
are present in Tricalbin, a yeast homolog of
Synaptotagmin, which is involved in membrane trafficking
and sorting. C2 domains fold into an 8-standed
beta-sandwich that can adopt 2 structural arrangements:
Type I and Type II, distinguished by a circular
permutation involving their N- and C-terminal beta
strands. Many C2 domains are Ca2+-dependent
membrane-targeting modules that bind a wide variety of
substances including bind phospholipids, inositol
polyphosphates, and intracellular proteins. Most C2
domain proteins are either signal transduction enzymes
that contain a single C2 domain, such as protein kinase
C, or membrane trafficking proteins which contain at
least two C2 domains, such as synaptotagmin 1. However,
there are a few exceptions to this including RIM
isoforms and some splice variants of piccolo/aczonin and
intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. This cd contains the second C2
repeat, C2B, and has a type-II topology.
Length = 111
Score = 29.1 bits (66), Expect = 1.4
Identities = 14/46 (30%), Positives = 21/46 (45%), Gaps = 4/46 (8%)
Query: 132 KDLAPVDTKRQRSDPYVKVYLLPDKSKAGKRKTRVKKHTLSPVFDE 177
K L ++K PY ++YL TRVKK T +P ++
Sbjct: 1 KGLDTSESKTGLLSPYAELYLNGKLVY----TTRVKKKTNNPSWNA 42
>gnl|CDD|239475 cd03380, PAP2_like_1, PAP2_like_1 proteins, a sub-family of PAP2,
containing bacterial acid phosphatase, vanadium
chloroperoxidases and vanadium bromoperoxidases.
Length = 209
Score = 29.7 bits (67), Expect = 2.1
Identities = 14/74 (18%), Positives = 24/74 (32%), Gaps = 1/74 (1%)
Query: 23 FDEVLKTAGERDFSVSSQQDKQASPDDLSAHSEAGLNKSVSSIL-TDDDVTERLPHHNKS 81
EV + + ++ Q A+ D + S L T ER P
Sbjct: 38 LAEVKALGALQSTARTTAQTALAAFDADGGDPPPHYANAFSIALGTPGLSEERTPRLYAL 97
Query: 82 LLGARSDSMASVYS 95
L A +D+ + +
Sbjct: 98 LARALTDAGIATWD 111
>gnl|CDD|177868 PLN02222, PLN02222, phosphoinositide phospholipase C 2.
Length = 581
Score = 30.4 bits (68), Expect = 2.1
Identities = 24/94 (25%), Positives = 43/94 (45%), Gaps = 9/94 (9%)
Query: 162 RKTRVKKHTLSPVFDEVLKFQLTLEDLECRTLWLSVWHSDMFGRNDFLGEVMMSLENKVF 221
+KT+ + P +DEV +F LT+ +L L L V DM ++DF G+ + +
Sbjct: 497 KKTKTLEDNWIPAWDEVFEFPLTVPELA--LLRLEVHEYDMSEKDDFGGQTCLPVWEL-- 552
Query: 222 DDPSPKCYPLQERSEILDELICSKGELIIGLKFV 255
+ +PL R +L++ ++FV
Sbjct: 553 -SQGIRAFPLHSR----KGEKYKSVKLLVKVEFV 581
>gnl|CDD|215527 PLN02976, PLN02976, amine oxidase.
Length = 1713
Score = 29.8 bits (67), Expect = 3.8
Identities = 16/41 (39%), Positives = 22/41 (53%), Gaps = 5/41 (12%)
Query: 167 KKHTLSPV----FDEVLKFQLTL-EDLECRTLWLSVWHSDM 202
K + P+ F EVLK + L E LECR + L +W D+
Sbjct: 456 KARAVGPIEKIKFKEVLKRKGGLQEYLECRNMILGLWSKDV 496
>gnl|CDD|176074 cd08692, C2B_Tac2-N, C2 domain second 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 = 135
Score = 28.4 bits (63), Expect = 4.3
Identities = 19/73 (26%), Positives = 37/73 (50%), Gaps = 2/73 (2%)
Query: 147 YVKVYLLPDKSKAGKRKTRVKKHTLSPV-FDEVLKFQLTLEDLECRTLWLSVWHSDMFGR 205
+VKV + K+KTR+ K + V + E + F +T ++ + L + ++ R
Sbjct: 38 FVKVGMFSTGGLLYKKKTRLVKSSNGQVKWGETMIFPVTQQEHGIQFL-IKLYSRSSVRR 96
Query: 206 NDFLGEVMMSLEN 218
FLG+V +S ++
Sbjct: 97 KHFLGQVWISSDS 109
>gnl|CDD|234654 PRK00131, aroK, shikimate kinase; Reviewed.
Length = 175
Score = 27.5 bits (62), Expect = 9.9
Identities = 10/17 (58%), Positives = 10/17 (58%)
Query: 326 NHTVVYRDVSLEELSER 342
TVVY D S EEL R
Sbjct: 97 RGTVVYLDASFEELLRR 113
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
0.315 0.132 0.386
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: 20,658,112
Number of extensions: 1955626
Number of successful extensions: 1789
Number of sequences better than 10.0: 1
Number of HSP's gapped: 1662
Number of HSP's successfully gapped: 197
Length of query: 419
Length of database: 10,937,602
Length adjustment: 99
Effective length of query: 320
Effective length of database: 6,546,556
Effective search space: 2094897920
Effective search space used: 2094897920
Neighboring words threshold: 11
Window for multiple hits: 40
X1: 16 ( 7.3 bits)
X2: 38 (14.6 bits)
X3: 64 (24.7 bits)
S1: 41 (21.6 bits)
S2: 60 (27.1 bits)