UniProt Summary: Component of a Polycomb group (PcG) multiprotein PRC1- like complex, a complex class required to maintain the transcriptionally repressive state of many genes, including Hox genes, throughout development. PcG PRC1 complex acts via chromatin remodeling and modification of histones; it mediates monoubiquitination of histone H2A 'Lys-119', rendering chromatin heritably changed in its expressibility. Within the PRC1-like complex, regulates RNF2 ubiquitin ligase activity (PubMed:26151332). Plays a redundant role with PCGF5 as part of a PRC1-like complex that mediates monoubiquitination of histone H2A 'Lys-119' on the X chromosome and is required for normal silencing of one copy of the X chromosome in XX females (By similarity). {ECO:0000250|UniProtKB:Q8BTQ0, ECO:0000269|PubMed:26151332}.
Pfam DomainsGO Terms
Pfam Domains
zf-C3HC4
GO Terms
inactivation of X chromosome by genetic imprinting
X chromosome
histone H2A-K119 monoubiquitination
PRC1 complex
dosage compensation by inactivation of X chromosome
regulation of gene expression by genetic imprinting
histone H2A monoubiquitination
dosage compensation
histone H2A ubiquitination
genetic imprinting
PcG protein complex
histone monoubiquitination
histone ubiquitination
protein monoubiquitination
regulation of gene expression, epigenetic
RNA polymerase II regulatory region sequence-specific DNA binding
histone modification
covalent chromatin modification
DNA-binding transcription factor activity
protein ubiquitination
chromatin organization
protein modification by small protein conjugation
protein modification by small protein conjugation or removal
chromosome organization
CRISPR Data
Compound HitMost Correlated Genes in ChemogenomicsTissues where Essential in the Avana Dataset (DepMap 20Q1)