Ubiquitin carboxyl-terminal hydrolase 10

UniProtKB accession:  P53874

Grouped By:  Matching UniProtKB accession

UniProtKB description:  Deubiquitinating enzyme involved in telomere and HM loci silencing, which is the repression of chromatin structure which leads to a stop in the transcription of nearby genes (PubMed:9755194, PubMed:10490600, PubMed:14623890). Targets histone H2B for deubiquitination, thus helping to localize SIR2 to the telomere (PubMed:15721261, PubMed:17028327, PubMed:22056669). At silent chromatin, including telomeres and the rDNA locus, not only maintains low H2B 'Lys-123' ubiquitination (H2BK123Ub), but also low H3 'Lys-4' and 'Lys-79' methylation (H3K4me and H3K79me, respectively) (PubMed:15721261, PubMed:15988024). Controls the proliferating-cell nuclear antigen PCNA/POL30 deubiquitination which is crucial for keeping TLS polymerases in check as well as for down-regulating the error-free bypass (PubMed:22829782). Deubiquitinates and stabilizes RPA190, the largest subunit of RNA polymerase I, to achieve optimal levels of ribosomes and cell growth (PubMed:22902402). Protects also nutrient transporters such as GAP1 from ubiquitin-dependent endocytosis (PubMed:11352638).