Ubiquitin-conjugating enzyme E2 2

UniProtKB accession:  P06104

Grouped By:  Matching UniProtKB accession

UniProtKB description:  E2 ubiquitin-conjugating enzyme that accepts ubiquitin from the ubiquitin-activating enzyme E1 and transfers it to a E3 ubiquitin-protein ligase (PubMed:10880451, PubMed:12226657, PubMed:1651502, PubMed:2157209, PubMed:3306404, PubMed:34789879, PubMed:7038392, PubMed:7926769, PubMed:8436296, PubMed:9343433). In association with the E3 enzyme BRE1 and LGE1, it plays a role in transcription regulation by catalyzing the monoubiquitination of histone H2B to form H2BK123ub1 (PubMed:12077605, PubMed:14752010, PubMed:16307922). H2BK123ub1 gives a specific tag for epigenetic transcriptional activation, elongation by RNA polymerase II, telomeric silencing, and is also a prerequisite for H3K4me and H3K79me formation (PubMed:12077605, PubMed:14752010, PubMed:15632065, PubMed:16307922). In association with the E3 enzyme RAD18, it catalyzes the monoubiquitination of POL30 'Lys-164', involved in postreplication repair of UV-damaged DNA (PubMed:15388802, PubMed:15632065, PubMed:16247017, PubMed:7926769, PubMed:9287349). The RAD6/UBC2-RAD18 complex is also involved in prevention of spontaneous mutations caused by 7,8-dihydro-8-oxoguanine (PubMed:15388802, PubMed:16247017, PubMed:7926769, PubMed:9287349). In association with the E3 enzyme UBR1, is involved in N-end rule-dependent protein degradation (PubMed:1651502, PubMed:2065660, PubMed:34789879, PubMed:7926769, PubMed:8436296). Also involved in sporulation (PubMed:3881753).