SUPERFAMILY 1.73 HMM library and genome assignments server


C2 domain (Calcium/lipid-binding domain, CaLB) superfamily

SCOP classification
Root:   SCOP hierarchy in SUPERFAMILY [ 0] (11)
Class:   All beta proteins [ 48724] (165)
Fold:   C2 domain-like [ 49561] (4)
  sandwich; 8 strands in 2 sheets; greek-key
Superfamily:   C2 domain (Calcium/lipid-binding domain, CaLB) [ 49562] (2)
Families:   PLC-like (P variant) [ 49563] (8)
  Synaptotagmin-like (S variant) [ 49575] (10)
  topologically similar to the C-terminal domain of PapD


Superfamily statistics
Genomes (268) UniProt 15.0 PDB chains (SCOP 1.73)
Domains 23,433 8,240 32
Proteins 15,194 5,725 31


Functional annotation
General category Regulation
Detailed category Signal transduction

Function annotation of SCOP domain superfamilies
InterPro annotation
Cross references IPR008973 SSF49562 Protein matches
Abstract

The Ca2+-dependent, lipid-binding domain (CaLB) has been identified in a number of proteins, for example the amino-terminal, 138 amino acid C2 domain of cytosolic phospholipase A2 (cPLA2-C2) which mediates an initial step in the production of lipid mediators of inflammation: the Ca2+-dependent translocation of the enzyme to intracellular membranes with subsequent liberation of arachidonic acid. The domain is composed of eight antiparallel beta-strands with six interconnecting loops that fits the "type II" topology for C2 domains. The structure has been identified as a beta-sandwich in the "Greek key" motif [PubMed9665851].


InterPro database

PDBeMotif information about ligands, sequence and structure motifs
Cross references PDB entries
Ligand binding statistics
Nucleic-acid binding statistics
Occurrence of secondary structure elements
Occurrence of small 3D structural motifs

PDBeMotif resource

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Internal database links

Browse genome assignments for this superfamily. The SUPERFAMILY hidden Markov model library has been used to carry out SCOP domain assignments to all genomes at the superfamily level.


Alignments of sequences to 22 models in this superfamily are available by clicking on the 'Alignments' icon above. PDB sequences less than 40% identical are shown by default, but any other sequence(s) may be aligned. Select PDB sequences, genome sequences, or paste in or upload your own sequences.


Browse and view proteins in genomes which have different domain combinations including a C2 domain (Calcium/lipid-binding domain, CaLB) domain.


Examine the distribution of domain superfamilies, or families, across the major taxonomic kingdoms or genomes within a kingdom. This gives an immediate impression of how superfamilies, or families, are restricted to certain kingdoms of life.


Explore domain occurrence network where nodes represent genomes and edges are domain architectures (shared between genomes) containing the superfamily of interest.

There are 22 hidden Markov models representing the C2 domain (Calcium/lipid-binding domain, CaLB) superfamily. Information on how the models are built, and plots showing hydrophobicity, match emmission probabilities and insertion/deletion probabilities can be inspected.


Jump to [ Top of page · SCOP classification · InterPro annotation · PDBeMotif links · Functional annotation · Internal database links ]