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HSC20 (HSCB), C-terminal oligomerisation domain superfamily

SCOP classification
Root:   SCOP hierarchy in SUPERFAMILY [ 0] (11)
Class:   All alpha proteins [ 46456] (284)
Fold:   Open three-helical up-and-down bundle [ 47143] (7)
Superfamily:   HSC20 (HSCB), C-terminal oligomerisation domain [ 47144]
Families:   HSC20 (HSCB), C-terminal oligomerisation domain [ 47145]

Superfamily statistics
Genomes (1,083) Uniprot 2018_03 genome PDB chains (SCOP 1.75)
Domains 1,127 5,970 1
Proteins 1,127 5,969 1

Functional annotation
General category General
Detailed category Protein interaction

Function annotation of SCOP domain superfamilies

UniProtKB KeyWords (KW)

(show details)
KW termFDR (all)SDKW levelAnnotation (direct or inherited)
Post-translational modificationChaperone0InformativeDirect

Document: KW annotation of SCOP domains

InterPro annotation
Cross references IPR009073 SSF47144 Protein matches

This entry represents the C-terminal oligomerisation domain found in HscB (heat shock cognate protein B), which is also known as HSC20 (20K heat shock cognate protein). HscB acts as a co-chaperone to regulate the ATPase activity and peptide-binding specificity of the molecular chaperone HscA, also known as HSC66 (HSP70 class). HscB proteins contain two domains, an N-terminal J-domain, which is involved in interactions with HscA, connected by a short loop to the C-terminal oligomerisation domain; the two domains make contact through a hydrophobic interface. The core of the oligomerisation domain is thought to bind and target proteins to HscA and consists of an open, three-helical bundle [PubMed11124030]. HscB, along with HscA, has been shown to play a role in the biogenesis of iron-sulphur proteins.

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 1 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 HSC20 (HSCB), C-terminal oligomerisation domain 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 1 hidden Markov models representing the HSC20 (HSCB), C-terminal oligomerisation domain 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 · UniProtKB KeyWords (KW) · Internal database links ]