DUSPDomain in ubiquitin-specific proteases.
|SMART accession number:||SM00695|
|Interpro abstract (IPR006615):|
Deubiquitinating enzymes (DUB) form a large family of cysteine protease that can deconjugate ubiquitin or ubiquitin-like proteins from ubiquitin-conjugated proteins. All DUBs contain a catalytic domain surrounded by one or more subdomains, some of which contribute to target recognition. The ~120-residue DUSP (domain present in ubiquitin-specific proteases) domain is one of these specific subdomains. Single or tandem DUSP domains are located both N- and C-terminal to the ubiquitin carboxyl-terminal hydrolase catalytic core domain [(PUBMED:16298993)].
The DUSP domain displays a tripod-like AB3 fold with a three-helix bundle and a three-stranded anti-parallel beta-sheet resembling the legs and seat of the tripod. Conserved residues are predominantly involved in hydrophobic packing interactions within the three alpha-helices. The most conserved DUSP residues, forming the PGPI motif, are flanked by two long loops that vary both in length and sequence. The PGPI motif packs against the three-helix bundle and is highly ordered [(PUBMED:16298993)].
The function of the DUSP domain is unknown but it may play a role in protein/protein interaction or substrate recognition. This domain is associated with ubiquitin carboxyl-terminal hydrolase family 2 (IPR001394, MEROPS peptidase family C19). They are a family 100 to 200 kDa peptides which includes the Ubp1 ubiquitin peptidase from yeast; others include:
|GO function:||ubiquitin-specific protease activity (GO:0004843)|
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- Evolution (species in which this domain is found)
- Cellular role (predicted cellular role)
- Metabolism (metabolic pathways involving proteins which contain this domain)
- Structure (3D structures containing this domain)
- Links (links to other resources describing this domain)