RPS-BLAST 2.2.26 [Sep-21-2011]
Database: CDD.v3.10
44,354 sequences; 10,937,602 total letters
Searching..................................................done
Query= psy12820
(156 letters)
>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 = 123 bits (312), Expect = 3e-37
Identities = 40/96 (41%), Positives = 57/96 (59%), Gaps = 4/96 (4%)
Query: 58 VKVLLRVLAARHLTRSGRCTTS---PFVEVEVLGADYDTGLKLTTKTVSDNGFNPTWNES 114
+ + +++++ + L + S P+VEVE+ G D K TK V +NGFNP WNE+
Sbjct: 2 LTLTIKIISGQQLPKPKGDKGSIVDPYVEVEIHGLPADDSAKFKTKVVKNNGFNPVWNET 61
Query: 115 CEFTVHNPEMALLRFVCQDEDMFGDSNFIGQATYPV 150
EF V PE+A LRFV DED D +F+GQA P+
Sbjct: 62 FEFDVTVPELAFLRFVVYDEDSGDD-DFLGQACLPL 96
>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 = 76.0 bits (187), Expect = 8e-19
Identities = 35/93 (37%), Positives = 52/93 (55%), Gaps = 5/93 (5%)
Query: 59 KVLLRVLAARHLTRSGRCTTS-PFVEVEVLGADYDTGLKLTTKTVSDNGFNPTWNESCEF 117
+ +++++AR+L + S P+V+V + G D K TK V + NP WNE+ EF
Sbjct: 1 TLTVKIISARNLPPKDKGGKSDPYVKVSLDG---DPKEKKKTKVVKNTL-NPVWNETFEF 56
Query: 118 TVHNPEMALLRFVCQDEDMFGDSNFIGQATYPV 150
V PE+A L D+D FG +FIGQ T P+
Sbjct: 57 EVPPPELAELEIEVYDKDRFGRDDFIGQVTIPL 89
>gnl|CDD|215765 pfam00168, C2, C2 domain.
Length = 85
Score = 75.0 bits (185), Expect = 1e-18
Identities = 30/87 (34%), Positives = 45/87 (51%), Gaps = 5/87 (5%)
Query: 62 LRVLAARHLT-RSGRCTTSPFVEVEVLGADYDTGLKLTTKTVSDNGFNPTWNESCEFTVH 120
+ V++A++L + + P+V+V + G TK V + NP WNE+ F V
Sbjct: 3 VTVISAKNLPPKDLNGKSDPYVKVSLGG---QKKDTKKTKVVKNT-LNPVWNETFTFEVT 58
Query: 121 NPEMALLRFVCQDEDMFGDSNFIGQAT 147
PE+A LR D D FG +FIG+ T
Sbjct: 59 LPELAELRIEVYDYDRFGKDDFIGEVT 85
>gnl|CDD|178538 PLN02952, PLN02952, phosphoinositide phospholipase C.
Length = 599
Score = 73.9 bits (181), Expect = 4e-16
Identities = 47/144 (32%), Positives = 70/144 (48%), Gaps = 10/144 (6%)
Query: 15 KAMQVNHAKFRMNGGCGYLLRPAFMF-----SESYDPYDPTSLVGVTRVKVLLRVLAARH 69
K++ + H FR NGGCGYL +P F+ E +DP + +VKV L
Sbjct: 426 KSLWLMHGMFRANGGCGYLKKPDFLMKKGFHDEVFDPKKKLPVKKTLKVKVYLGDGWRLD 485
Query: 70 LTRSGRCTTSP---FVEVEVLGADYDTGLKLTTKTVSDNGFNPTWNESCEFTVHNPEMAL 126
+ + + SP + ++ ++G D K TK + DN + P WNE F + PE+AL
Sbjct: 486 FSHTHFDSYSPPDFYTKMYIVGVPADNA-KKKTKIIEDN-WYPAWNEEFSFPLTVPELAL 543
Query: 127 LRFVCQDEDMFGDSNFIGQATYPV 150
LR ++ DM +F GQ PV
Sbjct: 544 LRIEVREYDMSEKDDFGGQTCLPV 567
>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 = 66.3 bits (162), Expect = 5e-15
Identities = 30/90 (33%), Positives = 44/90 (48%), Gaps = 7/90 (7%)
Query: 62 LRVLAARHLTRSGRCTTS-PFVEVEVLGADYDTGLKLTTKTVSDNGFNPTWNESCEFTVH 120
+ V+ AR+L S P+V+V + G K TK V + NP WNE+ EF V
Sbjct: 3 VTVIEARNLPAKDLNGKSDPYVKVSLGG-----KQKFKTKVVKNT-LNPVWNETFEFPVL 56
Query: 121 NPEMALLRFVCQDEDMFGDSNFIGQATYPV 150
+PE L D+D F +F+G+ P+
Sbjct: 57 DPESDTLTVEVWDKDRFSKDDFLGEVEIPL 86
>gnl|CDD|177868 PLN02222, PLN02222, phosphoinositide phospholipase C 2.
Length = 581
Score = 67.4 bits (164), Expect = 8e-14
Identities = 49/156 (31%), Positives = 71/156 (45%), Gaps = 17/156 (10%)
Query: 7 YNRQSVINKAMQVNHAKFRMNGGCGYLLRPAFMFSESYDP--YDPTSLVGVTRVKVLLRV 64
+N Q +++ + FR NGGCGY+ +P + D +DP + + VK LRV
Sbjct: 401 FNMQG-YGRSLWLMQGMFRANGGCGYIKKPDLLLKSGSDSDIFDPKATL---PVKTTLRV 456
Query: 65 LAA---------RHLTRSGRCTTSPFVEVEVLGADYDTGLKLTTKTVSDNGFNPTWNESC 115
RH + V + G DT +K TKT+ DN + P W+E
Sbjct: 457 TIYMGEGWYFDFRHTHFDQYSPPDFYTRVGIAGVPGDTVMK-KTKTLEDN-WIPAWDEVF 514
Query: 116 EFTVHNPEMALLRFVCQDEDMFGDSNFIGQATYPVY 151
EF + PE+ALLR + DM +F GQ PV+
Sbjct: 515 EFPLTVPELALLRLEVHEYDMSEKDDFGGQTCLPVW 550
>gnl|CDD|177875 PLN02230, PLN02230, phosphoinositide phospholipase C 4.
Length = 598
Score = 60.9 bits (147), Expect = 1e-11
Identities = 41/144 (28%), Positives = 67/144 (46%), Gaps = 10/144 (6%)
Query: 15 KAMQVNHAKFRMNGGCGYLLRPAFMFS-----ESYDPYDPTSLVGVTRVKVLLRVLAARH 69
+A+ + FR NGGCGY+ +P F+ + + P D + +VKV +
Sbjct: 425 RALWLMEGMFRANGGCGYVKKPDFLMDAGPNGQDFYPKDNSCPKKTLKVKVCMGDGWLLD 484
Query: 70 LTRSGRCTTSP---FVEVEVLGADYDTGLKLTTKTVSDNGFNPTWNESCEFTVHNPEMAL 126
++ + SP FV V + GA D ++ T + + + P WN+ F + PE+AL
Sbjct: 485 FKKTHFDSYSPPDFFVRVGIAGAPVDEVMEKTK--IEYDTWTPIWNKEFIFPLAVPELAL 542
Query: 127 LRFVCQDEDMFGDSNFIGQATYPV 150
LR + D+ +F GQ PV
Sbjct: 543 LRVEVHEHDINEKDDFGGQTCLPV 566
>gnl|CDD|165867 PLN02223, PLN02223, phosphoinositide phospholipase C.
Length = 537
Score = 59.7 bits (144), Expect = 3e-11
Identities = 40/133 (30%), Positives = 64/133 (48%), Gaps = 8/133 (6%)
Query: 24 FRMNGGCGYLLRPAFMF----SESYDPYDPTSLVGVTRVKVLL-RVLAARHLTRSGRCTT 78
FR NGGCGY+ +P F+ S + P + +V + +VK+ + R GR +
Sbjct: 375 FRANGGCGYVKKPDFLLNAGPSGVFYPTENPVVVKILKVKIYMGDGWIVDFKKRIGRLSK 434
Query: 79 SP-FVEVEVLGADYDTGLKLTTKTVSDNGFNPTWNESCEFTVHNPEMALLRFVCQDEDMF 137
+V + + G +D K+ TV +N + PTW E F + P++AL+ F D ++
Sbjct: 435 PDLYVRISIAGVPHDE--KIMKTTVKNNEWKPTWGEEFTFPLTYPDLALISFEVYDYEVS 492
Query: 138 GDSNFIGQATYPV 150
F GQ PV
Sbjct: 493 TADAFCGQTCLPV 505
>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 = 55.9 bits (135), Expect = 7e-11
Identities = 29/94 (30%), Positives = 49/94 (52%), Gaps = 10/94 (10%)
Query: 54 GVTRVKVL-LRVLAARHLTRSGRCTTSPFVEVEVLGADYDTGLKLTTKTVSDNGFNPTWN 112
GV RV V+ + LAA+ + G+ P+ + V GA + T+T+ N NP WN
Sbjct: 1 GVLRVHVVEAKDLAAKDRSGKGKS--DPYAILSV-GAQ-----RFKTQTI-PNTLNPKWN 51
Query: 113 ESCEFTVHNPEMALLRFVCQDEDMFGDSNFIGQA 146
CEF + + + LL+ + D+D F +++G+
Sbjct: 52 YWCEFPIFSAQNQLLKLILWDKDRFAGKDYLGEF 85
>gnl|CDD|177873 PLN02228, PLN02228, Phosphoinositide phospholipase C.
Length = 567
Score = 54.3 bits (130), Expect = 3e-09
Identities = 49/155 (31%), Positives = 74/155 (47%), Gaps = 19/155 (12%)
Query: 7 YNRQSVINKAMQVNHAKFRMNGGCGYLLRPAFMFSESYDPYDPTSLVGV-TRVKVLLRVL 65
+N Q K + + FR NGGCGY+ +P + E + +DP + + T +KV ++
Sbjct: 383 FNMQGH-GKQLWIMQGMFRANGGCGYVKKPRILLDE-HTLFDPCKRLPIKTTLKV--KIY 438
Query: 66 AAR------HLTRSGRCTTSP---FVEVEVLGADYDTGLKLTTKTVSDNGFNPTW-NESC 115
HLT + SP FV++ + G DT + T+T D F P W N+
Sbjct: 439 TGEGWDLDFHLTHFDQ--YSPPDFFVKIGIAGVPRDT-VSYRTETAVDQWF-PIWGNDEF 494
Query: 116 EFTVHNPEMALLRFVCQDEDMFGDSNFIGQATYPV 150
F + PE+ALL F QD D ++F GQ P+
Sbjct: 495 LFQLRVPELALLWFKVQDYDNDTQNDFAGQTCLPL 529
>gnl|CDD|128454 smart00149, PLCYc, Phospholipase C, catalytic domain (part); domain
Y. Phosphoinositide-specific phospholipases C. These
enzymes contain 2 regions (X and Y) which together form
a TIM barrel-like structure containing the active site
residues. Phospholipase C enzymes (PI-PLC) act as signal
transducers that generate two second messengers,
inositol-1,4,5-trisphosphate and diacylglycerol. The
bacterial enzyme appears to be a homologue of the
mammalian PLCs.
Length = 115
Score = 51.1 bits (123), Expect = 4e-09
Identities = 15/25 (60%), Positives = 19/25 (76%)
Query: 15 KAMQVNHAKFRMNGGCGYLLRPAFM 39
K MQ+N FR NGGCGY+L+P F+
Sbjct: 91 KPMQLNQGMFRANGGCGYVLKPDFL 115
>gnl|CDD|215891 pfam00387, PI-PLC-Y, Phosphatidylinositol-specific phospholipase C,
Y domain. This associates with pfam00388 to form a
single structural unit.
Length = 117
Score = 51.0 bits (123), Expect = 5e-09
Identities = 13/25 (52%), Positives = 17/25 (68%)
Query: 15 KAMQVNHAKFRMNGGCGYLLRPAFM 39
MQ+N A F NG CGY+L+P F+
Sbjct: 92 LGMQLNEAMFADNGRCGYVLKPEFL 116
>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 = 46.8 bits (112), Expect = 2e-07
Identities = 27/90 (30%), Positives = 44/90 (48%), Gaps = 11/90 (12%)
Query: 64 VLAARHLT---RSGRCTTSPFVEVEVLGADYDTGLKLTTKTVSDNGFNPTWNESCEFTVH 120
V++A +L R+G+ + PFV+ + + + K TKT+ NP WNES E V
Sbjct: 5 VISAENLPSADRNGK--SDPFVKFYL---NGEKVFK--TKTIKKT-LNPVWNESFEVPVP 56
Query: 121 NPEMALLRFVCQDEDMFGDSNFIGQATYPV 150
+ A+L+ D D G + +G A +
Sbjct: 57 SRVRAVLKVEVYDWDRGGKDDLLGSAYIDL 86
>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 = 45.9 bits (109), Expect = 4e-07
Identities = 26/88 (29%), Positives = 38/88 (43%), Gaps = 8/88 (9%)
Query: 64 VLAARHLTRSGRCTTS-PFVEVEVLGADYDTGLKLTTKTVSDNGFNPTWNESCEFTVHNP 122
VL AR L R TS PFV V G +T V + + P WNE EF +
Sbjct: 6 VLEARDLAPKDRNGTSDPFVRVFYNGQTLET------SVVKKSCY-PRWNEVFEFELMEG 58
Query: 123 EMALLRFVCQDEDMFGDSNFIGQATYPV 150
+ L D D+ ++F+G+ + +
Sbjct: 59 ADSPLSVEVWDWDLVSKNDFLGKVVFSI 86
>gnl|CDD|175989 cd04022, C2A_MCTP_PRT_plant, C2 domain first repeat found in
Multiple C2 domain and Transmembrane region Proteins
(MCTP); plant subset. MCTPs are involved in Ca2+
signaling at the membrane. Plant-MCTPs are composed of
a variable N-terminal sequence, four C2 domains, two
transmembrane regions (TMRs), and a short C-terminal
sequence. It is one of four protein classes that are
anchored to membranes via a transmembrane region; the
others being synaptotagmins, extended synaptotagmins,
and ferlins. MCTPs are the only membrane-bound C2 domain
proteins that contain two functional TMRs. MCTPs are
unique in that they bind Ca2+ but not phospholipids. C2
domains fold into an 8-standed beta-sandwich that can
adopt 2 structural arrangements: Type I and Type II,
distinguished by a circular permutation involving their
N- and C-terminal beta strands. Many C2 domains are
Ca2+-dependent membrane-targeting modules that bind a
wide variety of substances including bind phospholipids,
inositol polyphosphates, and intracellular proteins.
Most C2 domain proteins are either signal transduction
enzymes that contain a single C2 domain, such as protein
kinase C, or membrane trafficking proteins which contain
at least two C2 domains, such as synaptotagmin 1.
However, there are a few exceptions to this including
RIM isoforms and some splice variants of piccolo/aczonin
and intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. This cd contains the first C2
repeat, C2A, and has a type-II topology.
Length = 127
Score = 45.8 bits (109), Expect = 4e-07
Identities = 22/66 (33%), Positives = 37/66 (56%), Gaps = 8/66 (12%)
Query: 59 KVLLRVLAARHLT-RSGRCTTSPFVEVEVLGADYDTGLKLTTKTVSDNGFNPTWNESCEF 117
K+++ V+ A+ L + G+ ++S +VE+ D+D G K T+T + NP WNE F
Sbjct: 1 KLVVEVVDAQDLMPKDGQGSSSAYVEL-----DFD-GQKKRTRTKPKD-LNPVWNEKLVF 53
Query: 118 TVHNPE 123
V +P
Sbjct: 54 NVSDPS 59
>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 = 45.4 bits (108), Expect = 1e-06
Identities = 31/95 (32%), Positives = 48/95 (50%), Gaps = 14/95 (14%)
Query: 53 VGVTRVKVLLRV-LAARHLTRSGRCTTSPFVEVEVLGADYDTGLKLTTKTVSDNGFNPTW 111
+G+ +V+V+ LA R T ++ P+V V LG K+ T+ + N NP W
Sbjct: 1 LGLLKVRVVRGTNLAVRDFT-----SSDPYV-VLTLGNQ-----KVKTRVIKKN-LNPVW 48
Query: 112 NESCEFTVHNPEMALLRFVCQDEDMFGDSNFIGQA 146
NE +V NP MA L+ D+D F + +G+A
Sbjct: 49 NEELTLSVPNP-MAPLKLEVFDKDTFSKDDSMGEA 82
>gnl|CDD|176014 cd04049, C2_putative_Elicitor-responsive_gene, C2 domain present in
the putative elicitor-responsive gene. In plants
elicitor-responsive proteins are triggered in response
to specific elicitor molecules such as glycolproteins,
peptides, carbohydrates and lipids. A host of defensive
responses are also triggered resulting in localized cell
death. Antimicrobial secondary metabolites, such as
phytoalexins, or defense-related proteins, including
pathogenesis-related (PR) proteins are also produced.
There is a single C2 domain present here. C2 domains
fold into an 8-standed beta-sandwich that can adopt 2
structural arrangements: Type I and Type II,
distinguished by a circular permutation involving their
N- and C-terminal beta strands. Many C2 domains are
Ca2+-dependent membrane-targeting modules that bind a
wide variety of substances including bind phospholipids,
inositol polyphosphates, and intracellular proteins.
Most C2 domain proteins are either signal transduction
enzymes that contain a single C2 domain, such as protein
kinase C, or membrane trafficking proteins which contain
at least two C2 domains, such as synaptotagmin 1.
However, there are a few exceptions to this including
RIM isoforms and some splice variants of piccolo/aczonin
and intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. Members have a type-II
topology.
Length = 124
Score = 42.7 bits (101), Expect = 6e-06
Identities = 21/55 (38%), Positives = 28/55 (50%), Gaps = 3/55 (5%)
Query: 99 TKTVSDNGFNPTWNESCEFTVHNPE---MALLRFVCQDEDMFGDSNFIGQATYPV 150
+K +G NP WNE +FTV P L D+D F D +FIG+AT +
Sbjct: 37 SKVAKGDGRNPEWNEKFKFTVEYPGWGGDTKLILRIMDKDNFSDDDFIGEATIHL 91
>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 = 42.3 bits (100), Expect = 8e-06
Identities = 27/100 (27%), Positives = 43/100 (43%), Gaps = 11/100 (11%)
Query: 54 GVTRVKVL-LRVLAA--RHLTRSGRCTTSPFVEVEVLGADYDTGLKLTTKTVSDNGFNPT 110
GV R+ V+ + L A + + + + P+V V V GA +K + +N NP
Sbjct: 1 GVLRIHVIEAQDLVAKDKFVGGLVKGKSDPYVIVRV-GAQ-----TFKSKVIKEN-LNPK 53
Query: 111 WNESCEFTVHNPEMALLRFVCQDEDMFGDSNFIGQATYPV 150
WNE E V L DED +F+G+ + +
Sbjct: 54 WNEVYEAVVDEVPGQELEIELFDEDP-DKDDFLGRLSIDL 92
>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 = 42.6 bits (101), Expect = 9e-06
Identities = 35/113 (30%), Positives = 51/113 (45%), Gaps = 20/113 (17%)
Query: 39 MFSESYDPYDPTSLVGVTRVKVLLRVLAARHLTRSGRCTTS-PFVEVEVLGADYDTGLKL 97
+ S SY P ++ + VL AR+L S S P+V+V +L G KL
Sbjct: 4 LLSLSYLP--------TAE-RLTVVVLKARNLPPSDGKGLSDPYVKVSLLQ----GGKKL 50
Query: 98 TTK--TVSDNGFNPTWNESCEFTV---HNPEMALLRFVCQDEDMFGDSNFIGQ 145
K +V NP +NE+ F V E++L+ V D+D G + IGQ
Sbjct: 51 KKKKTSVKKGTLNPVFNEAFSFDVPAEQLEEVSLVITVV-DKDSVGRNEVIGQ 102
>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 = 41.2 bits (97), Expect = 2e-05
Identities = 26/95 (27%), Positives = 44/95 (46%), Gaps = 12/95 (12%)
Query: 59 KVLLRVLAARHL---TRSGRCTTSPFVEVEVLGADYDTGLKLTTKTVSDNGFNPTWNESC 115
++++ ++ R L +G+ P+ EV + ++ TK VSD NP WN S
Sbjct: 16 RLMVVIVEGRDLKPCNSNGKS--DPYCEVSMGSQEH------KTKVVSDT-LNPKWNSSM 66
Query: 116 EFTVHNPEMALLRFVCQDEDMFGDSNFIGQATYPV 150
+F V + E +L D D F +F+G+ V
Sbjct: 67 QFFVKDLEQDVLCITVFDRDFFSPDDFLGRTEIRV 101
>gnl|CDD|176064 cd08682, C2_Rab11-FIP_classI, C2 domain found in Rab11-family
interacting proteins (FIP) class I. Rab GTPases recruit
various effector proteins to organelles and vesicles.
Rab11-family interacting proteins (FIPs) are involved in
mediating the role of Rab11. FIPs can be divided into
three classes: class I FIPs (Rip11a, Rip11b, RCP, and
FIP2) which contain a C2 domain after N-terminus of the
protein, class II FIPs (FIP3 and FIP4) which contain two
EF-hands and a proline rich region, and class III FIPs
(FIP1) which exhibits no homology to known protein
domains. All FIP proteins contain a highly conserved,
20-amino acid motif at the C-terminus of the protein,
known as Rab11/25 binding domain (RBD). Class I FIPs
are thought to bind to endocytic membranes via their C2
domain, which interacts directly with phospholipids.
Class II FIPs do not have any membrane binding domains
leaving much to speculate about the mechanism involving
FIP3 and FIP4 interactions with endocytic membranes. The
members in this CD are class I FIPs. The exact function
of the Rab11 and FIP interaction is unknown, but there
is speculation that it involves the role of forming a
targeting complex that recruits a group of proteins
involved in membrane transport to organelles. The C2
domain was first identified in PKC. C2 domains fold into
an 8-standed beta-sandwich that can adopt 2 structural
arrangements: Type I and Type II, distinguished by a
circular permutation involving their N- and C-terminal
beta strands. Many C2 domains are Ca2+-dependent
membrane-targeting modules that bind a wide variety of
substances including bind phospholipids, inositol
polyphosphates, and intracellular proteins. Most C2
domain proteins are either signal transduction enzymes
that contain a single C2 domain, such as protein kinase
C, or membrane trafficking proteins which contain at
least two C2 domains, such as synaptotagmin 1. However,
there are a few exceptions to this including RIM
isoforms and some splice variants of piccolo/aczonin and
intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions.
Length = 126
Score = 40.5 bits (95), Expect = 4e-05
Identities = 24/93 (25%), Positives = 39/93 (41%), Gaps = 13/93 (13%)
Query: 64 VLAARHLTRSGRCTTS-PFVEVEVLGADYDTGLKLTTKTVSDNGFNPTWNESCEFT---- 118
VL AR L G+ T+ +V +++ Y T +V + +P W E C F
Sbjct: 5 VLQARGLLCKGKSGTNDAYVIIQLGKEKYST-------SVKEKTTSPVWKEECSFELPGL 57
Query: 119 -VHNPEMALLRFVCQDEDMFGDSNFIGQATYPV 150
N A L+ ++ G F+GQ + P+
Sbjct: 58 LSGNGNRATLQLTVMHRNLLGLDKFLGQVSIPL 90
>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 = 39.2 bits (92), Expect = 1e-04
Identities = 26/79 (32%), Positives = 40/79 (50%), Gaps = 5/79 (6%)
Query: 62 LRVLAARHLTRSGRCTTS-PFVEVEVLGADYDTGLKLTTKTVSDNGFNPTWNESCEFTVH 120
+RVL A ++T+ +T +VE+ + A + K TKT+ N NP WNE+ EF +
Sbjct: 4 VRVLRATNITKGDLLSTPDCYVELWLPTA---SDEKKRTKTI-KNSINPVWNETFEFRIQ 59
Query: 121 NPEMALLRFVCQDEDMFGD 139
+ +L DED D
Sbjct: 60 SQVKNVLELTVMDEDYVMD 78
>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 = 38.8 bits (91), Expect = 2e-04
Identities = 30/117 (25%), Positives = 46/117 (39%), Gaps = 23/117 (19%)
Query: 40 FSESYDPYDPTSLVGVTRVKVLLRVLAARHLT-RSGRCTTS-PFVEVEVLGADYD---TG 94
FS YD + V ++ AR+L R+ PFV+V +L + +
Sbjct: 5 FSVQYDLEEEQLTV---------SLIKARNLPPRTKDVAHCDPFVKVCLLPDERRSLQSK 55
Query: 95 LKLTTKTVSDNGFNPTWNESCEFTVHNPEM--ALLRFVCQDEDMFGDSNFIGQATYP 149
+K T+ NP ++E+ F V E+ LR D D F IG +P
Sbjct: 56 VKRKTQ-------NPNFDETFVFQVSFKELQRRTLRLSVYDVDRFSRHCIIGHVLFP 105
>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 = 37.5 bits (88), Expect = 5e-04
Identities = 24/99 (24%), Positives = 33/99 (33%), Gaps = 12/99 (12%)
Query: 53 VGVTRVKVLLRVLAARHLTRSGRCTTS--PFVEVEVLGADYDTGLKLTTKTVSDNGFNPT 110
+GV V + +AR L S + P+V + TK D NP
Sbjct: 1 IGVLAVTIK----SARGLKGSDIIGGTVDPYVTFSISNRREL----ARTKVKKDT-SNPV 51
Query: 111 WNESCEFTVHNPEMALLRFVCQDEDMFGDSNFIGQATYP 149
WNE+ V N L D + IG A +
Sbjct: 52 WNETKYILV-NSLTEPLNLTVYDFNDKRKDKLIGTAEFD 89
>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 = 37.2 bits (87), Expect = 6e-04
Identities = 17/61 (27%), Positives = 28/61 (45%), Gaps = 6/61 (9%)
Query: 79 SPFVEVEVLGADYDTGLKLTTKTVSDNGFNPTWNESCEFTVHNPEMALLRFVCQDEDMFG 138
SP+ E+ + + L TT+ NP+WN S EF V + + + V +D+
Sbjct: 14 SPYAELYL-----NGKLVYTTRVKKKTN-NPSWNASTEFLVTDRRKSRVTVVVKDDRDRH 67
Query: 139 D 139
D
Sbjct: 68 D 68
>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 = 36.4 bits (85), Expect = 0.001
Identities = 25/75 (33%), Positives = 37/75 (49%), Gaps = 6/75 (8%)
Query: 80 PFVEVEVLGAD-YDTGLKLTTKTVSDNGFNPTWNESCEFTV----HNPEMALLRFVCQDE 134
PFV+VE+L + T+ P ++ES EF V + E ALL F +D
Sbjct: 39 PFVKVELLPRHLFPDVPTPKTQVKKKT-LFPLFDESFEFNVPPEQCSVEGALLLFTVKDY 97
Query: 135 DMFGDSNFIGQATYP 149
D+ G ++F G+A P
Sbjct: 98 DLLGSNDFEGEAFLP 112
>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 = 36.2 bits (84), Expect = 0.002
Identities = 29/81 (35%), Positives = 38/81 (46%), Gaps = 18/81 (22%)
Query: 40 FSESYDPYDPTSLVGVTRVKVLLRVLAARHLTR---SGRCTTSPFVEVEVLGADYDTGLK 96
FS SYD + T + L++L A L SG T+ PFV++ +L D K
Sbjct: 7 FSVSYDFQEST---------LTLKILKAVELPAKDFSG--TSDPFVKIYLLP---DKKHK 52
Query: 97 LTTKTVSDNGFNPTWNESCEF 117
L TK V NP WNE+ F
Sbjct: 53 LETK-VKRKNLNPHWNETFLF 72
>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 = 0.003
Identities = 22/66 (33%), Positives = 37/66 (56%), Gaps = 2/66 (3%)
Query: 59 KVLLRVLAARHLTRSGRCTTSPFVEVEVLGADY-DTGLKLTTKTVSDNGFNPTWNESCEF 117
KV ++V+AA L PFVEV ++G D K TK+ ++N ++P +NE+ +F
Sbjct: 1 KVTVKVVAANDLKWQTTGMFRPFVEVNLIGPHLSDKKRKFATKSKNNN-WSPKYNETFQF 59
Query: 118 TVHNPE 123
+ N +
Sbjct: 60 ILGNED 65
>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 = 35.3 bits (82), Expect = 0.003
Identities = 14/50 (28%), Positives = 21/50 (42%), Gaps = 1/50 (2%)
Query: 98 TTKTVSDNGFNPTWNESCEFTVHNPEMALLRFVCQDEDMFGDSNFIGQAT 147
T+T+ D NP W+E E V E + D G + G+A+
Sbjct: 39 KTRTIYDT-LNPRWDEEFELEVPAGEPLWISATVWDRSFVGKHDLCGRAS 87
>gnl|CDD|175993 cd04027, C2B_Munc13, C2 domain second repeat in Munc13 (mammalian
uncoordinated) proteins. C2-like domains are thought to
be involved in phospholipid binding in a Ca2+
independent manner in both Unc13 and Munc13.
Caenorabditis elegans Unc13 has a central domain with
sequence similarity to PKC, which includes C1 and
C2-related domains. Unc13 binds phorbol esters and DAG
with high affinity in a phospholipid manner. Mutations
in Unc13 results in abnormal neuronal connections and
impairment in cholinergic neurotransmission in the
nematode. Munc13 is the mammalian homolog which are
expressed in the brain. There are 3 isoforms (Munc13-1,
-2, -3) and are thought to play a role in
neurotransmitter release and are hypothesized to be
high-affinity receptors for phorbol esters. Unc13 and
Munc13 contain both C1 and C2 domains. There are two C2
related domains present, one central and one at the
carboxyl end. Munc13-1 contains a third C2-like domain.
Munc13 interacts with syntaxin, synaptobrevin, and
synaptotagmin suggesting a role for these as scaffolding
proteins. C2 domains fold into an 8-standed
beta-sandwich that can adopt 2 structural arrangements:
Type I and Type II, distinguished by a circular
permutation involving their N- and C-terminal beta
strands. Many C2 domains are Ca2+-dependent
membrane-targeting modules that bind a wide variety of
substances including bind phospholipids, inositol
polyphosphates, and intracellular proteins. Most C2
domain proteins are either signal transduction enzymes
that contain a single C2 domain, such as protein kinase
C, or membrane trafficking proteins which contain at
least two C2 domains, such as synaptotagmin 1. However,
there are a few exceptions to this including RIM
isoforms and some splice variants of piccolo/aczonin and
intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. This cd contains the second C2
repeat, C2B, and has a type-II topology.
Length = 127
Score = 35.2 bits (81), Expect = 0.004
Identities = 23/64 (35%), Positives = 31/64 (48%), Gaps = 8/64 (12%)
Query: 59 KVLLRVLAARHLTRSGRCTTS-PFVEVEVLGADYDTGLKLTTKTVSDNGFNPTWNESCEF 117
K+ + V+ A+ L + TS P+V V+V K TKT+ N NP WNE F
Sbjct: 2 KISITVVCAQGLIAKDKTGTSDPYVTVQV------GKTKKRTKTIPQN-LNPVWNEKFHF 54
Query: 118 TVHN 121
HN
Sbjct: 55 ECHN 58
>gnl|CDD|175982 cd04015, C2_plant_PLD, C2 domain present in plant phospholipase D
(PLD). PLD hydrolyzes terminal phosphodiester bonds in
diester glycerophospholipids resulting in the
degradation of phospholipids. In vitro PLD transfers
phosphatidic acid to primary alcohols. In plants PLD
plays a role in germination, seedling growth,
phosphatidylinositol metabolism, and changes in
phospholipid composition. There is a single
Ca(2+)/phospholipid-binding C2 domain in PLD. C2 domains
fold into an 8-standed beta-sandwich that can adopt 2
structural arrangements: Type I and Type II,
distinguished by a circular permutation involving their
N- and C-terminal beta strands. Many C2 domains are
Ca2+-dependent membrane-targeting modules that bind a
wide variety of substances including bind phospholipids,
inositol polyphosphates, and intracellular proteins.
Most C2 domain proteins are either signal transduction
enzymes that contain a single C2 domain, such as protein
kinase C, or membrane trafficking proteins which contain
at least two C2 domains, such as synaptotagmin 1.
However, there are a few exceptions to this including
RIM isoforms and some splice variants of piccolo/aczonin
and intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions.
Length = 158
Score = 35.0 bits (81), Expect = 0.007
Identities = 24/87 (27%), Positives = 40/87 (45%), Gaps = 16/87 (18%)
Query: 68 RHLTRSGRCTTSPFVEVEVLGADYDTGLKLT---TKTVSDNGFNPTWNESCEFTVHNPEM 124
G+ T+ P+ V++ GA T+ + ++ NP WNES F ++
Sbjct: 48 SSHRHVGKITSDPYATVDLAGA--------RVARTRVIENSE-NPVWNES--FHIYCAHY 96
Query: 125 AL-LRFVCQDEDMFGDSNFIGQATYPV 150
A + F +D D+ G + IG+A PV
Sbjct: 97 ASHVEFTVKDNDVVG-AQLIGRAYIPV 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 = 34.7 bits (80), Expect = 0.007
Identities = 23/107 (21%), Positives = 37/107 (34%), Gaps = 26/107 (24%)
Query: 63 RVLAAR--HLTRSGRCTTSPFVEVEVLGADYDTGLKLTT--KTVSDNGFNPTWNESCEFT 118
RVL R L +G C PF V + + + KT NP ++E+ F
Sbjct: 4 RVLECRDLALKSNGTC--DPFARVTLNYSSKTDTKRTKVKKKTN-----NPRFDEAFYFE 56
Query: 119 VH---------------NPEMALLRFVCQDEDMFGDSNFIGQATYPV 150
+ + E + LR M +F+G+ P+
Sbjct: 57 LTIGFSYEKKSFKVEEEDLEKSELRVELWHASMVSGDDFLGEVRIPL 103
>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 = 34.2 bits (79), Expect = 0.010
Identities = 22/94 (23%), Positives = 36/94 (38%), Gaps = 7/94 (7%)
Query: 57 RVKVLLRVLAARHLTRSGRCTTS-PFVEVEVLGADYDTGLKLTTKTVSDNGFNPTWNESC 115
R K+++ V R+L P+V + +L D + T DN NP ++E+
Sbjct: 15 RQKLIVTVHKCRNLPPCDSSDIPDPYVRLYLL-PDKSKSTRRKTSVKKDN-LNPVFDETF 72
Query: 116 EFTV---HNPEMALLRFVCQDEDMF-GDSNFIGQ 145
EF V L V + + +GQ
Sbjct: 73 EFPVSLEELKRRTLDVAVKNSKSFLSREKKLLGQ 106
>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 = 33.8 bits (78), Expect = 0.011
Identities = 28/87 (32%), Positives = 42/87 (48%), Gaps = 8/87 (9%)
Query: 64 VLAARHL-TRSGRCTTSPFVEVEVLGADYDTGLKLTTKTVSDNGFNPTWNESCEFTVHNP 122
VL AR L R +P+V+V +L + K TKTV NP WN++ E++
Sbjct: 22 VLQARDLPPRDDGSLRNPYVKVYLLPDRSEKS-KRRTKTV-KKTLNPEWNQTFEYSNVRR 79
Query: 123 EMALLRF----VCQDEDMFGDSNFIGQ 145
E R V D D G+++F+G+
Sbjct: 80 ETLKERTLEVTVW-DYDRDGENDFLGE 105
>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 = 33.4 bits (77), Expect = 0.017
Identities = 20/86 (23%), Positives = 34/86 (39%), Gaps = 8/86 (9%)
Query: 63 RVLAARHL-TRSGRCTTSPFVEVEVLGADYDTGLKLTTKTVSDNGFNPTWNESCEFTVHN 121
VL AR+L + P+ + + G+ TKT G +P W+E F +
Sbjct: 6 VVLKARNLPNKRKLDKQDPYCVLRI------GGVTKKTKTDFRGGQHPEWDEELRFEITE 59
Query: 122 PEMALLRFVCQDEDMFGDSNFIGQAT 147
+ +L+ D+D + IG
Sbjct: 60 DKKPILKVAVFDDD-KRKPDLIGDTE 84
>gnl|CDD|227371 COG5038, COG5038, Ca2+-dependent lipid-binding protein, contains C2
domain [General function prediction only].
Length = 1227
Score = 34.3 bits (79), Expect = 0.018
Identities = 16/71 (22%), Positives = 25/71 (35%), Gaps = 6/71 (8%)
Query: 80 PFVEVEVLGADYDTGLKLTTKTVSDNGFNPTWNESCEFTVHNPEMALLRFVCQDEDMFGD 139
PFV++ + + V NP WNE V N +L D D
Sbjct: 1063 PFVKLFL------NEKSVYKTKVVKKTLNPVWNEEFTIEVLNRVKDVLTINVNDWDSGEK 1116
Query: 140 SNFIGQATYPV 150
++ +G A +
Sbjct: 1117 NDLLGTAEIDL 1127
Score = 28.6 bits (64), Expect = 1.5
Identities = 13/46 (28%), Positives = 18/46 (39%), Gaps = 1/46 (2%)
Query: 105 NGFNPTWNESCEFTVHNPEMALLRFVCQDEDMFGDSNFIGQATYPV 150
+ NP WNE V + L C D + GD +G+ V
Sbjct: 753 STLNPIWNEILYVPVTSKNQRLTLE-CMDYEESGDDRNLGEVNINV 797
>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 = 33.0 bits (76), Expect = 0.019
Identities = 25/86 (29%), Positives = 34/86 (39%), Gaps = 12/86 (13%)
Query: 64 VLAARHLTRSGRC-TTSPFVEVEVLGADYDTGLKLTTKT-VSDNGFNPTWNESCEFTVHN 121
V +A L + + P+VEV V G + KT VS NP WNE FTV
Sbjct: 8 VESA-KLKSNSKSFKPDPYVEVTVDG-------QPPKKTEVSKKTSNPKWNE--HFTVLV 57
Query: 122 PEMALLRFVCQDEDMFGDSNFIGQAT 147
+ L F +G+A+
Sbjct: 58 TPQSTLEFKVWSHHTLKADVLLGEAS 83
>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 = 33.1 bits (76), Expect = 0.020
Identities = 23/74 (31%), Positives = 34/74 (45%), Gaps = 3/74 (4%)
Query: 79 SPFVEVEVLGAD-YDTGLKLTTKTVSDNGFNPTWNESCEFTVHNPEMALLRFVCQDEDMF 137
P+V++ + D + TKT+ NP WNE F V+ E LL F DE+
Sbjct: 22 DPYVKISLYDPDGNGEIDSVQTKTIKKT-LNPKWNEEFFFRVNPREHRLL-FEVFDENRL 79
Query: 138 GDSNFIGQATYPVY 151
+F+GQ P+
Sbjct: 80 TRDDFLGQVEVPLN 93
>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 = 32.9 bits (76), Expect = 0.020
Identities = 21/72 (29%), Positives = 29/72 (40%), Gaps = 10/72 (13%)
Query: 79 SPFVEVEVLGADYDTGLKLTTKTVSDNGFNPTWNESCEFTVHNPEMALLRFVCQDEDMFG 138
SP+VE+ V + +K T NP W E F V NPE L +D+
Sbjct: 22 SPYVELTVGKTTQKSKVKERTN-------NPVWEEGFTFLVRNPENQELEIEVKDDK--- 71
Query: 139 DSNFIGQATYPV 150
+G T P+
Sbjct: 72 TGKSLGSLTLPL 83
>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 = 33.0 bits (76), Expect = 0.023
Identities = 21/73 (28%), Positives = 34/73 (46%), Gaps = 5/73 (6%)
Query: 80 PFVEVEVLGADYDTGLKLTTKTVSDNGFNPTWNESCEFTVHNPEMALLRFVCQ--DEDMF 137
P+V+++ L D K TKT+ NP WNE+ F + P R + D D
Sbjct: 36 PYVKLK-LIPDPKNETKQKTKTIKKT-LNPVWNETFTFDL-KPADKDRRLSIEVWDWDRT 92
Query: 138 GDSNFIGQATYPV 150
++F+G ++ V
Sbjct: 93 TRNDFMGSLSFGV 105
>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 = 32.5 bits (74), Expect = 0.035
Identities = 26/84 (30%), Positives = 42/84 (50%), Gaps = 16/84 (19%)
Query: 39 MFSESYDPYDPTSLVGVTRVKVLLRVLAARHLTRS-GRCTTSPFVEVEVLGADYDTGLKL 97
+ S SY P T ++ + V+ AR+L G+ T PFV+V +L G K+
Sbjct: 5 LLSLSYLP---------TAERLTVVVVKARNLVWDNGKTTADPFVKVYLL----QDGRKI 51
Query: 98 TTK--TVSDNGFNPTWNESCEFTV 119
+ K +V + NP +NE+ F+V
Sbjct: 52 SKKKTSVKRDDTNPIFNEAMIFSV 75
>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 = 30.7 bits (70), Expect = 0.11
Identities = 12/44 (27%), Positives = 22/44 (50%), Gaps = 1/44 (2%)
Query: 108 NPTWNESCEFTVHNPEMA-LLRFVCQDEDMFGDSNFIGQATYPV 150
NP +NE F V+ E ++F D+D F ++++ + V
Sbjct: 49 NPVFNERLAFEVYPHEKNFDIQFKVLDKDKFSFNDYVATGSLSV 92
>gnl|CDD|176028 cd08382, C2_Smurf-like, C2 domain present in Smad
ubiquitination-related factor (Smurf)-like proteins. A
single C2 domain is found in Smurf proteins,
C2-WW-HECT-domain E3s, which play an important role in
the downregulation of the TGF-beta signaling pathway.
Smurf proteins also regulate cell shape, motility, and
polarity by degrading small guanosine triphosphatases
(GTPases). C2 domains fold into an 8-standed
beta-sandwich that can adopt 2 structural arrangements:
Type I and Type II, distinguished by a circular
permutation involving their N- and C-terminal beta
strands. Many C2 domains are Ca2+-dependent
membrane-targeting modules that bind a wide variety of
substances including bind phospholipids, inositol
polyphosphates, and intracellular proteins. Most C2
domain proteins are either signal transduction enzymes
that contain a single C2 domain, such as protein kinase
C, or membrane trafficking proteins which contain at
least two C2 domains, such as synaptotagmin 1. However,
there are a few exceptions to this including RIM
isoforms and some splice variants of piccolo/aczonin and
intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. Members here have type-II
topology.
Length = 123
Score = 30.4 bits (69), Expect = 0.20
Identities = 24/94 (25%), Positives = 34/94 (36%), Gaps = 9/94 (9%)
Query: 59 KVLLRVLAARHLTRSG--RCTTSPFVEVEVLGADYDTGLKLTTKTVSDNGFNPTWNESCE 116
KV L VL A L + R PF + V D G +T +P WNE +
Sbjct: 1 KVRLTVLCADGLAKRDLFR-LPDPFAVITV-----DGGQTHSTDVAK-KTLDPKWNEHFD 53
Query: 117 FTVHNPEMALLRFVCQDEDMFGDSNFIGQATYPV 150
TV + ++ Q + D F+G
Sbjct: 54 LTVGPSSIITIQVFDQKKFKKKDQGFLGCVRIRA 87
>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 = 29.9 bits (68), Expect = 0.29
Identities = 14/53 (26%), Positives = 21/53 (39%), Gaps = 4/53 (7%)
Query: 99 TKTVSDNGFNPTWNESCEFTVHNP-EMALLRFVCQDEDMFGDSNFIGQATYPV 150
T T+S+ NP W+E V +P + L D + G +G V
Sbjct: 38 TVTISNT-LNPVWDEVLYVPVTSPNQKITLE--VMDYEKVGKDRSLGSVEINV 87
>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 = 29.1 bits (66), Expect = 0.44
Identities = 19/88 (21%), Positives = 34/88 (38%), Gaps = 14/88 (15%)
Query: 64 VLAARHLTRSGRCTTSPFVEVEVLGADYDTGLKLTTKTVSDNGFNPTWNESCEFTV---- 119
V++ ++L + +V G K T+ + + NP WNE+ E+ +
Sbjct: 2 VVSLKNLPGL-KGKGDRIAKVTFRGV------KKKTRVLENEL-NPVWNETFEWPLAGSP 53
Query: 120 HNPEMALLRFVCQDEDMFGDSNFIGQAT 147
E + V E + + IG AT
Sbjct: 54 DPDESLEIV-VKDYEKVGRNR-LIGSAT 79
>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 = 29.3 bits (66), Expect = 0.46
Identities = 24/92 (26%), Positives = 41/92 (44%), Gaps = 9/92 (9%)
Query: 59 KVLLRVLAARHLTRSGRCTTS-PFVEVEVLGADYDTGLKLTTK--TVSDNGFNPTWNESC 115
K+ + +L A++L + S P+V++ + G +L K T+ NP +NES
Sbjct: 16 KLTVVILEAKNLKKMDVGGLSDPYVKIHL----MQNGKRLKKKKTTIKKRTLNPYYNESF 71
Query: 116 EFTV--HNPEMALLRFVCQDEDMFGDSNFIGQ 145
F V + L D D G ++ IG+
Sbjct: 72 SFEVPFEQIQKVHLIVTVLDYDRIGKNDPIGK 103
>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 = 29.0 bits (65), Expect = 0.56
Identities = 33/111 (29%), Positives = 48/111 (43%), Gaps = 18/111 (16%)
Query: 39 MFSESYDPYDPTSLVGVTRVKVLLRVLAARHLTRSGRCTTS-PFVEVEVLGADYDTGLKL 97
MFS Y P T ++ L ++ AR+L S P+V+V ++ G +L
Sbjct: 4 MFSLCYLP---------TAGRLTLTIIKARNLKAMDITGFSDPYVKVSLMC----EGRRL 50
Query: 98 TTK--TVSDNGFNPTWNESCEFTV--HNPEMALLRFVCQDEDMFGDSNFIG 144
K +V N NPT+NE+ F V N + L D D G + IG
Sbjct: 51 KKKKTSVKKNTLNPTYNEALVFDVPPENVDNVSLIIAVVDYDRVGHNELIG 101
>gnl|CDD|176002 cd04037, C2E_Ferlin, C2 domain fifth repeat in Ferlin. Ferlins are
involved in vesicle fusion events. Ferlins and other
proteins, such as Synaptotagmins, are implicated in
facilitating the fusion process when cell membranes fuse
together. There are six known human Ferlins: Dysferlin
(Fer1L1), Otoferlin (Fer1L2), Myoferlin (Fer1L3),
Fer1L4, Fer1L5, and Fer1L6. Defects in these genes can
lead to a wide range of diseases including muscular
dystrophy (dysferlin), deafness (otoferlin), and
infertility (fer-1, fertilization factor-1).
Structurally they have 6 tandem C2 domains, designated
as (C2A-C2F) and a single C-terminal transmembrane
domain, though there is a new study that disputes this
and claims that there are actually 7 tandem C2 domains
with another C2 domain inserted between C2D and C2E.
In a subset of them (Dysferlin, Myoferlin, and Fer1)
there is an additional conserved domain called DysF. C2
domains fold into an 8-standed beta-sandwich that can
adopt 2 structural arrangements: Type I and Type II,
distinguished by a circular permutation involving their
N- and C-terminal beta strands. Many C2 domains are
Ca2+-dependent membrane-targeting modules that bind a
wide variety of substances including bind phospholipids,
inositol polyphosphates, and intracellular proteins.
Most C2 domain proteins are either signal transduction
enzymes that contain a single C2 domain, such as protein
kinase C, or membrane trafficking proteins which contain
at least two C2 domains, such as synaptotagmin 1.
However, there are a few exceptions to this including
RIM isoforms and some splice variants of piccolo/aczonin
and intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. This cd contains the fifth C2
repeat, C2E, and has a type-II topology.
Length = 124
Score = 28.7 bits (65), Expect = 0.61
Identities = 15/57 (26%), Positives = 26/57 (45%), Gaps = 6/57 (10%)
Query: 95 LKLTTKTVSD------NGFNPTWNESCEFTVHNPEMALLRFVCQDEDMFGDSNFIGQ 145
+KL K ++D N NP + + E P ++L+ D D+ G + IG+
Sbjct: 27 IKLGKKKINDRDNYIPNTLNPVFGKMFELEATLPGNSILKISVMDYDLLGSDDLIGE 83
>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 = 28.9 bits (65), Expect = 0.75
Identities = 31/129 (24%), Positives = 49/129 (37%), Gaps = 23/129 (17%)
Query: 30 CGYLLRPAFMFSESYDPYDPTSLVGVTRVKVLLRVLAARHLTRSGRCTTSPFVEVEVLGA 89
G LL S Y+P V + + R L A + T+ P+V+V ++
Sbjct: 1 RGELL-----LSLCYNPTANRITVNIIKA----RNLKAMDING----TSDPYVKVWLMYK 47
Query: 90 DYDTGLKLTTKTVSDNGFNPTWNESCEFTVHNP-----EMALLRFVCQDEDMFGDSNFIG 144
D K T + NP +NES F + P E L+ V D+D ++ IG
Sbjct: 48 DKRVEKKKTV--IKKRTLNPVFNESFIFNI--PLERLRETTLIITV-MDKDRLSRNDLIG 102
Query: 145 QATYPVYTN 153
+ +
Sbjct: 103 KIYLGWKSG 111
>gnl|CDD|173895 cd00517, ATPS, ATP-sulfurylase. ATP-sulfurylase (ATPS), also known
as sulfate adenylate transferase, catalyzes the transfer
of an adenylyl group from ATP to sulfate, forming
adenosine 5'-phosphosulfate (APS). This reaction is
generally accompanied by a further reaction, catalyzed
by APS kinase, in which APS is phosphorylated to yield
3'-phospho-APS (PAPS). In some organisms the APS kinase
is a separate protein, while in others it is
incorporated with ATP sulfurylase in a bifunctional
enzyme that catalyzes both reactions. In bifunctional
proteins, the domain that performs the kinase activity
can be attached at the N-terminal end of the sulfurylase
unit or at the C-terminal end, depending on the
organism. While the reaction is ubiquitous among
organisms, the physiological role of the reaction
varies. In some organisms it is used to generate APS
from sulfate and ATP, while in others it proceeds in the
opposite direction to generate ATP from APS and
pyrophosphate. ATP sulfurylase can be a monomer, a
homodimer, or a homo-oligomer, depending on the
organism. ATPS belongs to a large superfamily of
nucleotidyltransferases that includes pantothenate
synthetase (PanC), phosphopantetheine
adenylyltransferase (PPAT), and the amino-acyl tRNA
synthetases. The enzymes of this family are structurally
similar and share a dinucleotide-binding domain.
Length = 353
Score = 29.1 bits (66), Expect = 0.78
Identities = 12/56 (21%), Positives = 21/56 (37%), Gaps = 5/56 (8%)
Query: 21 HAKFRMNGGCGYLL--R-PAFM--FSESYDPYDPTSLVGVTRVKVLLRVLAARHLT 71
HA R N G + + R A + + Y PYD + ++ + + R
Sbjct: 244 HAIIRKNYGATHFIVGRDHAGVGHPGDYYGPYDAQEIFKKLAPELGIEPVPFREAA 299
>gnl|CDD|232928 TIGR00339, sopT, ATP sulphurylase. This enzyme forms adenosine
5'-phosphosulfate (APS) from ATP and free sulfate, the
first step in the formation of the activated sulfate
donor 3'-phosphoadenylylsulfate (PAPS). In some cases,
it is found in a bifunctional protein in which the other
domain, APS kinase, catalyzes the second and final step,
the phosphorylation of APS to PAPS; the combined ATP
sulfurylase/APS kinase may be called PAPS synthase.
Members of this family also include the dissimilatory
sulfate adenylyltransferase (sat) of the sulfate reducer
Archaeoglobus fulgidus [Central intermediary metabolism,
Sulfur metabolism].
Length = 383
Score = 29.3 bits (66), Expect = 0.79
Identities = 14/59 (23%), Positives = 24/59 (40%), Gaps = 8/59 (13%)
Query: 21 HAKFRMNGGCGYLL---RPAFMFSES-----YDPYDPTSLVGVTRVKVLLRVLAARHLT 71
HA R N G + + A S S Y PYD L + ++ ++++ H+
Sbjct: 271 HAIIRKNYGATHFIVGRDHAGPGSNSKGQDFYGPYDAQELFEKYKAELGIKIVPFEHVA 329
>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 = 28.1 bits (63), Expect = 0.98
Identities = 16/50 (32%), Positives = 21/50 (42%), Gaps = 1/50 (2%)
Query: 101 TVSDNGFNPTWNESCEFTVHNPEMALLRFVCQDEDMFGDSNFIGQATYPV 150
+ N NP W+E F + +P L F D DS F+G A P
Sbjct: 36 STQKNTSNPFWDEHFLFEL-SPNSKELLFEVYDNGKKSDSKFLGLAIVPF 84
>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 = 27.9 bits (63), Expect = 0.99
Identities = 21/69 (30%), Positives = 26/69 (37%), Gaps = 10/69 (14%)
Query: 60 VLLRVLAARHLTRSGRCTTSPFVEVEVLGADYDTGLKLTTKTVSDNGFNPTWNESCEFTV 119
V +RV+ AR L P V+VEV G T +K T P +NE F
Sbjct: 6 VRVRVIEARQLVGG---NIDPVVKVEVGGQKKYTSVKKGTN-------CPFYNEYFFFNF 55
Query: 120 HNPEMALLR 128
H L
Sbjct: 56 HESPDELFD 64
>gnl|CDD|175985 cd04018, C2C_Ferlin, C2 domain third repeat in Ferlin. Ferlins are
involved in vesicle fusion events. Ferlins and other
proteins, such as Synaptotagmins, are implicated in
facilitating the fusion process when cell membranes fuse
together. There are six known human Ferlins: Dysferlin
(Fer1L1), Otoferlin (Fer1L2), Myoferlin (Fer1L3),
Fer1L4, Fer1L5, and Fer1L6. Defects in these genes can
lead to a wide range of diseases including muscular
dystrophy (dysferlin), deafness (otoferlin), and
infertility (fer-1, fertilization factor-1).
Structurally they have 6 tandem C2 domains, designated
as (C2A-C2F) and a single C-terminal transmembrane
domain, though there is a new study that disputes this
and claims that there are actually 7 tandem C2 domains
with another C2 domain inserted between C2D and C2E.
In a subset of them (Dysferlin, Myoferlin, and Fer1)
there is an additional conserved domain called DysF. C2
domains fold into an 8-standed beta-sandwich that can
adopt 2 structural arrangements: Type I and Type II,
distinguished by a circular permutation involving their
N- and C-terminal beta strands. Many C2 domains are
Ca2+-dependent membrane-targeting modules that bind a
wide variety of substances including bind phospholipids,
inositol polyphosphates, and intracellular proteins.
Most C2 domain proteins are either signal transduction
enzymes that contain a single C2 domain, such as protein
kinase C, or membrane trafficking proteins which contain
at least two C2 domains, such as synaptotagmin 1.
However, there are a few exceptions to this including
RIM isoforms and some splice variants of piccolo/aczonin
and intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. This cd contains the third C2
repeat, C2C, and has a type-II topology.
Length = 151
Score = 28.4 bits (64), Expect = 1.2
Identities = 14/46 (30%), Positives = 20/46 (43%), Gaps = 7/46 (15%)
Query: 79 SPFVEVEVLGADYDTGLKLTTKTVSDNGFNPTWNESCEFTVHNPEM 124
P+VEV G K+ T ++ +NP WNE F P +
Sbjct: 36 DPYVEVSFAG------QKVKTSVKKNS-YNPEWNEQIVFPEMFPPL 74
>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 = 28.0 bits (63), Expect = 1.2
Identities = 14/60 (23%), Positives = 25/60 (41%), Gaps = 6/60 (10%)
Query: 62 LRVLAARHLTR-SGRCTTSPFVEVEVLGADYDTGLKLTTKTVSDNGFNPTWNESCEFTVH 120
+ +++A L + + V + + K +T D G NPTWNE+ F +
Sbjct: 4 ITIISAEDLKNVNLFGKMKVYAVVWIDPSH-----KQSTPVDRDGGTNPTWNETLRFPLD 58
>gnl|CDD|176075 cd08693, C2_PI3K_class_I_beta_delta, C2 domain present in class I
beta and delta phosphatidylinositol 3-kinases (PI3Ks).
PI3Ks (AKA phosphatidylinositol (PtdIns) 3-kinases)
regulate cell processes such as cell growth,
differentiation, proliferation, and motility. PI3Ks
work on phosphorylation of phosphatidylinositol,
phosphatidylinositide (4)P (PtdIns (4)P),2 or
PtdIns(4,5)P2. Specifically they phosphorylate the D3
hydroxyl group of phosphoinositol lipids on the inositol
ring. There are 3 classes of PI3Ks based on structure,
regulation, and specificity. All classes contain a C2
domain, a PIK domain, and a kinase catalytic domain.
The members here are class I, beta and delta isoforms of
PI3Ks and contain both a Ras-binding domain and a
p85-binding domain. Class II PI3Ks contain both of
these as well as a PX domain, and a C-terminal C2 domain
containing a nuclear localization signal. C2 domains
fold into an 8-standed beta-sandwich that can adopt 2
structural arrangements: Type I and Type II,
distinguished by a circular permutation involving their
N- and C-terminal beta strands. Many C2 domains are
Ca2+-dependent membrane-targeting modules that bind a
wide variety of substances including bind phospholipids,
inositol polyphosphates, and intracellular proteins.
Most C2 domain proteins are either signal transduction
enzymes that contain a single C2 domain, such as protein
kinase C, or membrane trafficking proteins which contain
at least two C2 domains, such as synaptotagmin 1.
However, there are a few exceptions to this including
RIM isoforms and some splice variants of piccolo/aczonin
and intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. Members have a type-I
topology.
Length = 173
Score = 27.7 bits (62), Expect = 2.1
Identities = 15/36 (41%), Positives = 17/36 (47%), Gaps = 4/36 (11%)
Query: 98 TTKTVSDNGFNPTWNESCEF--TVHN-PEMALLRFV 130
T VS P WNE+ EF V + P MA L F
Sbjct: 47 KTSEVSGKND-PVWNETLEFDINVCDLPRMARLCFA 81
>gnl|CDD|216677 pfam01747, ATP-sulfurylase, ATP-sulfurylase. This domain is the
catalytic domain of ATP-sulfurylase or sulfate
adenylyltransferase EC:2.7.7.4 some of which are part of
a bifunctional polypeptide chain associated with
adenosyl phosphosulphate (APS) kinase pfam01583. Both
enzymes are required for PAPS
(phosphoadenosine-phosphosulfate) synthesis from
inorganic sulphate. ATP sulfurylase catalyzes the
synthesis of adenosine-phosphosulfate APS from ATP and
inorganic sulphate.
Length = 214
Score = 27.6 bits (62), Expect = 2.4
Identities = 13/61 (21%), Positives = 22/61 (36%), Gaps = 8/61 (13%)
Query: 21 HAKFRMNGGCGYLL--R---PAFMFSESYDPYDPTSLVGVTRVKVLLRVLAARHLTRSGR 75
HA R N GC + + R + Y PYD + ++ + + R +
Sbjct: 106 HAIIRKNYGCTHFIVGRDHAGVGDY---YGPYDAQEIFDEYAGELGIEPVPFREAVYCKK 162
Query: 76 C 76
C
Sbjct: 163 C 163
>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 = 27.3 bits (61), Expect = 2.7
Identities = 23/80 (28%), Positives = 39/80 (48%), Gaps = 11/80 (13%)
Query: 40 FSESYDPYDPTSLVGVTRVKVLLRVLAARHLTRSGRCTTSPFVEVEVLGADYDTGLKLTT 99
S +Y+P + R+ V+ VL AR L + TS +V+V ++ ++ +K
Sbjct: 6 ISLTYNPT-------LNRLTVV--VLRARGLRQLDHAHTSVYVKVSLM--IHNKVVKTKK 54
Query: 100 KTVSDNGFNPTWNESCEFTV 119
V D +P++NES F V
Sbjct: 55 TEVVDGAASPSFNESFSFKV 74
>gnl|CDD|153243 cd03169, GATase1_PfpI_1, Type 1 glutamine amidotransferase
(GATase1)-like domain found in a subgroup of proteins
similar to PfpI from Pyrococcus furiosus. Type 1
glutamine amidotransferase (GATase1)-like domain found
in a subgroup of proteins similar to PfpI from
Pyrococcus furiosus. PfpI is an ATP-independent
intracellular proteases which may hydrolyze small
peptides to provide a nutritional source. Only Cys of
the catalytic triad typical of GATase1 domains is
conserved in this group. This Cys residue is found in
the sharp turn between a beta strand and an alpha helix
termed the nucleophile elbow.
Length = 180
Score = 26.8 bits (60), Expect = 3.7
Identities = 11/33 (33%), Positives = 15/33 (45%), Gaps = 2/33 (6%)
Query: 64 VLAARHLTRSGRCTTSPFV--EVEVLGADYDTG 94
+LAA + + RCT P EVE+ G
Sbjct: 120 ILAAAGVLKGRRCTAYPACKPEVELAGGTVVDD 152
>gnl|CDD|204425 pfam10262, Rdx, Rdx family. This entry is an approximately 100
residue region of selenoprotein-T, conserved from
plants to humans. The protein binds to
UDP-glucose:glycoprotein glucosyltransferase (UGTR),
the endoplasmic reticulum (ER)-resident protein, which
is known to be involved in the quality control of
protein folding. Selenium (Se) plays an essential role
in cell survival and most of the effects of Se are
probably mediated by selenoproteins, including
selenoprotein T. However, despite its binding to UGTR
and that its mRNA is up-regulated in extended asphyxia,
the function of the protein and hence of this region of
it is unknown. Selenoprotein W contains selenium as
selenocysteine in the primary protein structure and
levels of this selenoprotein are affected by selenium.
Length = 76
Score = 25.7 bits (57), Expect = 3.9
Identities = 10/36 (27%), Positives = 14/36 (38%), Gaps = 1/36 (2%)
Query: 23 KFRMNGGCGYLLRPAFMFSESYDPYDPTSLVGVTRV 58
CG+LLR A++ E + P L V
Sbjct: 4 TIEYCTQCGWLLRAAWLAQELLSTF-PDELGEVELS 38
>gnl|CDD|223197 COG0119, LeuA, Isopropylmalate/homocitrate/citramalate synthases
[Amino acid transport and metabolism].
Length = 409
Score = 27.2 bits (61), Expect = 4.1
Identities = 10/28 (35%), Positives = 14/28 (50%), Gaps = 1/28 (3%)
Query: 42 ESYDPYDPTSLVGVTRVKVLLRVLAARH 69
E+Y+P DP VG R V+ + R
Sbjct: 303 ETYEPIDP-EDVGRRRRIVIGGKHSGRK 329
>gnl|CDD|176534 cd08592, PI-PLCc_gamma, Catalytic domain of metazoan
phosphoinositide-specific phospholipase C-gamma. This
family corresponds to the catalytic domain present in
metazoan phosphoinositide-specific phospholipase C
(PI-PLC, EC 3.1.4.11)-gamma isozymes. PI-PLC is a
signaling enzyme that hydrolyzes the membrane
phospholipids phosphatidylinositol-4,5-bisphosphate
(PIP2) to generate two important second messengers in
eukaryotic signal transduction cascades, inositol
1,4,5-trisphosphate (InsP3) and diacylglycerol (DAG).
InsP3 triggers inflow of calcium from intracellular
stores, while DAG, together with calcium, activates
protein kinase C, which goes on to phosphorylate other
molecules, leading to altered cellular activity. Calcium
is required for the catalysis. PI-PLC-gamma represents a
class of mammalian PI-PLC that has an N-terminal
pleckstrin homology (PH) domain, an array of EF hands, a
PLC catalytic core domain, and a C2 domain.The PLC
catalytic core domain is a TIM barrel with two highly
conserved regions (X and Y) split by a highly degenerate
linker sequence. Unique to PI-PLC-gamma, a second PH
domain, two SH2 (Src homology 2) regions, and one SH3
(Src homology 3) region is present within this linker
region. There are two PI-PLC-gamma isozymes (1-2). They
are activated by receptor and non-receptor tyrosine
kinases due to the presence of two SH2 and a single SH3
domain within the linker region. Aside from the two
PI-PLC-gamma isozymes identified in mammals, some
eukaryotic PI-PLC-gamma homologs have been classified
with this subfamily.
Length = 229
Score = 26.6 bits (59), Expect = 5.5
Identities = 7/14 (50%), Positives = 10/14 (71%)
Query: 14 NKAMQVNHAKFRMN 27
+K MQ+N A F +N
Sbjct: 216 DKPMQLNQALFMLN 229
>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 = 26.1 bits (58), Expect = 6.5
Identities = 17/50 (34%), Positives = 24/50 (48%), Gaps = 8/50 (16%)
Query: 80 PFVEVEVLGADYDTGL-KLTTKTVSDNGFNPTWNESCEFTVHNPEMALLR 128
P+V ++V D DT + K +TK + +P WNE VHN L
Sbjct: 37 PYVSIDV---D-DTHIGKTSTKPKT---NSPVWNEEFTTEVHNGRNLELT 79
>gnl|CDD|175986 cd04019, C2C_MCTP_PRT_plant, C2 domain third repeat found in
Multiple C2 domain and Transmembrane region Proteins
(MCTP); plant subset. MCTPs are involved in Ca2+
signaling at the membrane. Plant-MCTPs are composed of
a variable N-terminal sequence, four C2 domains, two
transmembrane regions (TMRs), and a short C-terminal
sequence. It is one of four protein classes that are
anchored to membranes via a transmembrane region; the
others being synaptotagmins, extended synaptotagmins,
and ferlins. MCTPs are the only membrane-bound C2 domain
proteins that contain two functional TMRs. MCTPs are
unique in that they bind Ca2+ but not phospholipids. C2
domains fold into an 8-standed beta-sandwich that can
adopt 2 structural arrangements: Type I and Type II,
distinguished by a circular permutation involving their
N- and C-terminal beta strands. Many C2 domains are
Ca2+-dependent membrane-targeting modules that bind a
wide variety of substances including bind phospholipids,
inositol polyphosphates, and intracellular proteins.
Most C2 domain proteins are either signal transduction
enzymes that contain a single C2 domain, such as protein
kinase C, or membrane trafficking proteins which contain
at least two C2 domains, such as synaptotagmin 1.
However, there are a few exceptions to this including
RIM isoforms and some splice variants of piccolo/aczonin
and intersectin which only have a single C2 domain. C2
domains with a calcium binding region have negatively
charged residues, primarily aspartates, that serve as
ligands for calcium ions. This cd contains the third C2
repeat, C2C, and has a type-II topology.
Length = 150
Score = 26.1 bits (58), Expect = 6.6
Identities = 9/26 (34%), Positives = 11/26 (42%)
Query: 97 LTTKTVSDNGFNPTWNESCEFTVHNP 122
L T+ NP+WNE F P
Sbjct: 34 LRTRPSQTRNGNPSWNEELMFVAAEP 59
>gnl|CDD|204099 pfam08933, DUF1864, Domain of unknown function (DUF1864). This
domain has no known function. It is found in various
hypothetical and conserved domain proteins.
Length = 387
Score = 26.2 bits (58), Expect = 7.6
Identities = 26/89 (29%), Positives = 31/89 (34%), Gaps = 23/89 (25%)
Query: 68 RH-LTRSGRCTTSPFVEVEVL----GADYDTGLKLTTKTVSDNGFNPTWNESCEFTVHNP 122
RH +T R T SP +E L GA + T + T HNP
Sbjct: 86 RHEITEPSRETVSPLLEASALAMHIGASIGVTPRFATAHL---------------TTHNP 130
Query: 123 EMALL--RFV-CQDEDMFGDSNFIGQATY 148
L RF DE +F D N G Y
Sbjct: 131 AANGLYKRFTDLPDEKLFLDYNTKGILAY 159
>gnl|CDD|236762 PRK10796, PRK10796, LPS-assembly lipoprotein RlpB; Provisional.
Length = 188
Score = 25.8 bits (57), Expect = 8.2
Identities = 13/34 (38%), Positives = 18/34 (52%), Gaps = 8/34 (23%)
Query: 26 MNGGCGYLLR-----PAFMFS---ESYDPYDPTS 51
+ GCG+ LR P+ M + +S DPY P S
Sbjct: 15 VTAGCGFHLRGTTQVPSEMKTLILDSGDPYGPLS 48
>gnl|CDD|236643 PRK10044, PRK10044, ferrichrome outer membrane transporter;
Provisional.
Length = 727
Score = 26.3 bits (58), Expect = 9.8
Identities = 15/55 (27%), Positives = 24/55 (43%), Gaps = 6/55 (10%)
Query: 6 TYNRQSVINKAMQVNHAKFRMNGGCGYL----LRPAFMFSESYDPYDPTSLVGVT 56
+ NR + + + +F GG YL + P F +SES++P T G
Sbjct: 473 SLNRVN--GTTDKRDDKQFTWRGGVNYLFDNGITPYFSYSESFEPSSGTGKDGNI 525
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
0.323 0.137 0.421
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: 7,864,503
Number of extensions: 685094
Number of successful extensions: 487
Number of sequences better than 10.0: 1
Number of HSP's gapped: 471
Number of HSP's successfully gapped: 71
Length of query: 156
Length of database: 10,937,602
Length adjustment: 89
Effective length of query: 67
Effective length of database: 6,990,096
Effective search space: 468336432
Effective search space used: 468336432
Neighboring words threshold: 11
Window for multiple hits: 40
X1: 16 ( 7.4 bits)
X2: 38 (14.6 bits)
X3: 64 (24.7 bits)
S1: 41 (22.0 bits)
S2: 55 (25.1 bits)