Ubiquitin Conjugating Enzyme E2W (UBE2W) Human Recombinant Protein

This gene encodes a nuclear-localized ubiquitin-conjugating enzyme (E2) that, along with ubiquitin-activating (E1) and ligating (E3) enzymes, coordinates the addition of a ubiquitin moiety to existing proteins. The encoded protein promotes the ubiquitination of Fanconi anemia complementation group proteins and may be important in the repair of DNA damage. There is a pseudogene for this gene on chromosome 1. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Aug 2012]

UBE2W: Accepts ubiquitin from the E1 complex and catalyzes its covalent attachment to other proteins. Catalyzes monoubiquitination. Involved in degradation of misfolded chaperone substrates by mediating monoubiquitination of STUB1/CHIP, leading to recruitment of ATXN3 to monoubiquitinated STUB1/CHIP, and restriction of the length of ubiquitin chain attached to STUB1/CHIP substrates by ATXN3. After UV irradiation, but not after mitomycin-C (MMC) treatment, acts as a specific E2 ubiquitin-conjugating enzyme for the Fanconi anemia complex by associating with E3 ubiquitin-protein ligase FANCL and catalyzing monoubiquitination of FANCD2, a key step in the DNA damage pathway. In vitro catalyzes 'Lys-11'-linked polyubiquitination. Belongs to the ubiquitin-conjugating enzyme family. 3 isoforms of the human protein are produced by alternative splicing.

Protein type: Ubiquitin conjugating system; EC 6.3.2.19; Enzyme, misc.; Ubiquitin ligase; Ligase

Chromosomal Location of Human Ortholog: 8q21.11

Cellular Component: cytoplasm; nucleus

Molecular Function: small conjugating protein ligase activity; ubiquitin protein ligase binding; ubiquitin-protein ligase activity; ATP binding; ligase activity

Biological Process: protein monoubiquitination; proteasomal ubiquitin-dependent protein catabolic process; misfolded or incompletely synthesized protein catabolic process; DNA repair