Synonyms:TRIM37, POB1, TEF3, MUL, tripartite motif containing 37 Background:E3 ubiquitin-protein ligase required to prevent centriole reduplication(PubMed:15885686, PubMed:23769972). Probably acts by ubiquitinating positive regulators of centriole reduplication(PubMed:23769972). Mediates monoubiquitination of 'Lys-119' of histone H2A(H2AK119Ub), a specific tag for epigenetic transcriptional repression: associates with some Polycomb group(PcG) multiprotein PRC2-like complex and mediates repression of target genes(PubMed:25470042). Has anti-HIV activity(PubMed:24317724).