Aliases for USP5 Gene
External Ids for USP5 Gene
Previous GeneCards Identifiers for USP5 Gene
Ubiquitin (see MIM 191339)-dependent proteolysis is a complex pathway of protein metabolism implicated in such diverse cellular functions as maintenance of chromatin structure, receptor function, and degradation of abnormal proteins. A late step of the process involves disassembly of the polyubiquitin chains on degraded proteins into ubiquitin monomers. USP5 disassembles branched polyubiquitin chains by a sequential exo mechanism, starting at the proximal end of the chain (Wilkinson et al., 1995 [PubMed 7578059]).[supplied by OMIM, Mar 2010]
GeneCards Summary for USP5 Gene
USP5 (Ubiquitin Specific Peptidase 5 (Isopeptidase T)) is a Protein Coding gene. Among its related pathways are Ubiquitin-Proteasome Dependent Proteolysis. GO annotations related to this gene include cysteine-type endopeptidase activity and ubiquitinyl hydrolase activity. An important paralog of this gene is USP13.
UniProtKB/Swiss-Prot for USP5 Gene
Cleaves linear and branched multiubiquitin polymers with a marked preference for branched polymers. Involved in unanchored Lys-48-linked polyubiquitin disassembly. Binds linear and Lys-63-linked polyubiquitin with a lower affinity. Knock-down of USP5 causes the accumulation of p53/TP53 and an increase in p53/TP53 transcriptional activity because the unanchored polyubiquitin that accumulates is able to compete with ubiquitinated p53/TP53 but not with MDM2 for proteasomal recognition.