BMI1 , Polycomb complex protein BMI 1, RING finger protein 51, RNF51, PCGF4.
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.
