L3MBTL1 Antibody – Rabbit Polyclonal

This gene represents a polycomb group gene. The encoded protein functions to regulate gene activity, likely via chromatin modification. The encoded protein may also be necessary for mitosis. Alternatively spliced transcript variants encoding different isoforms have been identified.[provided by RefSeq, Sep 2010]

L3MBTL: 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/HIST1H1E 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. 5 isoforms of the human protein are produced by alternative splicing.

Protein type: Cell cycle regulation; Histone-binding

Chromosomal Location of Human Ortholog: 20q13.12

Cellular Component: nucleoplasm; nucleolus; plasma membrane; condensed chromosome; nucleus; chromatin

Molecular Function: identical protein binding; protein binding; nucleosomal histone binding; zinc ion binding; histone binding; nucleosome binding; SAM domain binding; chromatin binding; transcription factor activity; methylated histone residue binding

Biological Process: transcription, DNA-dependent; regulation of cell cycle; regulation of megakaryocyte differentiation; regulation of mitosis; hemopoiesis; chromatin modification; negative regulation of transcription, DNA-dependent