Fig. 1From: Polycomb repressive complex 2 and its core component EZH2: potential targeted therapeutic strategies for head and neck squamous cell carcinomaThe mechanism of epigenetic regulation of PcG. The core of PRC1 primarily consists of really interesting new gene 1A and 1B (RING1A/RING1B), while the core of PRC2 mainly comprises embryonic ectoderm development (EED), retinoblastoma binding protein 4/7 (RBBP4/7), and EZH1/2. PRC2 deposits trimethylation of H3K27me3 to genomic loci. Then, related proteins drive cPRC1 to PRC2 pre-occupied loci and deposit monoubiquitylation of histone H2A at lysine 119 H2AK119ub1 [109]Back to article page