FUNCTION: Polycomb group (PcG) protein that specifically recognizes and binds mono- and dimethyllysine residues on target proteins, therey acting as a 'reader' of a network of post-translational modifications. PcG proteins maintain the transcriptionally repressive state of genes: acts as a chromatin...
                        FUNCTION: Polycomb group (PcG) protein that specifically recognizes and binds mono- and dimethyllysine residues on target proteins, therey acting as a 'reader' of a network of post-translational modifications. PcG proteins maintain the transcriptionally repressive state of genes: acts as a chromatin compaction factor by recognizing and binding mono- and dimethylated histone H1b/H1-4 at 'Lys-26' (H1bK26me1 and H1bK26me2) and histone H4 at 'Lys-20' (H4K20me1 and H4K20me2), leading to condense chromatin and repress transcription. Recognizes and binds p53/TP53 monomethylated at 'Lys-382', leading to repress p53/TP53-target genes. Also recognizes and binds RB1/RB monomethylated at 'Lys-860'. Participates in the ETV6-mediated repression. Probably plays a role in cell proliferation. Overexpression induces multinucleated cells, suggesting that it is required to accomplish normal mitosis. {ECO:0000269|PubMed:17540172, ECO:0000269|PubMed:18408754, ECO:0000269|PubMed:20870719, ECO:0000269|PubMed:20870725}.
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                        GO - Biological processes (BP): 
                        chromatin organization [GO:0006325]; hemopoiesis [GO:0030097]; heterochromatin assembly [GO:0031507]; negative regulation of transcription, DNA-templated [GO:0045892]; regulation of cell cycle [GO:0051726]; regulation of megakaryocyte differentiation [GO:0045652]; regulation of mitotic nuclear divis...
                        chromatin organization [GO:0006325]; hemopoiesis [GO:0030097]; heterochromatin assembly [GO:0031507]; negative regulation of transcription, DNA-templated [GO:0045892]; regulation of cell cycle [GO:0051726]; regulation of megakaryocyte differentiation [GO:0045652]; regulation of mitotic nuclear division [GO:0007088]
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                        GO - Molecular function (MF): 
                        chromatin binding [GO:0003682]; histone binding [GO:0042393]; identical protein binding [GO:0042802]; methylated histone binding [GO:0035064]; nucleosome binding [GO:0031491]; SAM domain binding [GO:0032093]; zinc ion binding [GO:0008270]...
                        chromatin binding [GO:0003682]; histone binding [GO:0042393]; identical protein binding [GO:0042802]; methylated histone binding [GO:0035064]; nucleosome binding [GO:0031491]; SAM domain binding [GO:0032093]; zinc ion binding [GO:0008270]
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                        GO - Cellular component (CC): 
                        chromatin [GO:0000785]; chromatin lock complex [GO:0061793]; condensed chromosome [GO:0000793]; nucleoplasm [GO:0005654]; nucleus [GO:0005634]...
                        chromatin [GO:0000785]; chromatin lock complex [GO:0061793]; condensed chromosome [GO:0000793]; nucleoplasm [GO:0005654]; nucleus [GO:0005634]
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