EOG8QC3MS GO:0000151 1/4 ubiquitin ligase complex cellular_component "A protein complex that includes a ubiquitin-protein ligase and enables ubiquitin protein ligase activity. The complex also contains other proteins that may confer substrate specificity on the complex." [GOC:jh2, PMID:9529603] EOG8QC3MS GO:0004842 1/4 ubiquitin-protein transferase activity molecular_function "Catalysis of the transfer of ubiquitin from one protein to another via the reaction X-Ub + Y --> Y-Ub + X, where both X-Ub and Y-Ub are covalent linkages." [GOC:BioGRID, GOC:jh2, PMID:9635407]