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Subcellular location: Nucleus
Subunit: Component of chromatin-associated class II polycomb repressive complex 1 (PRC1/hPRC-H) at least composed of PCGF2/RNF110, PCGF4/BMI1, CBX2/M33, CBX4/PC2, CBX8/PC3, PHC1, PHC2, PHC3, SCMH1, RING1 and RNF2/RING2. Also component of E3 ubiquitin ligase complex or human polycomb repressive complex 1- like at least composed of PHC2, PCGF4, RING1 and RNF2
Function: Involved in maintaining the transcriptionally repressive state of genes. Modifies chromatin, rendering it heritably changed in its expressibility
Similarity: Contains 1 RING-type zinc finger.
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