Recombinant Human Lethal (3)malignant brain tumor-like protein 1 (L3MBTL1)

Uniprot Id

Q9Y468

Target Species

Human

Target Name

L3MBTL1

Target Full Name

Lethal(3)malignant brain tumor-like protein 1

Target 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.

Target Subcellular Location

Nucleus. Note=Excluded from the nucleolus. Does not colocalizes with the PcG protein BMI1, suggesting that these two proteins do not belong to the same complex.

Target Tissue Specificity

Widely expressed. Expression is reduced in colorectal cancer cell line SW480 and promyelocytic leukemia cell line HL-60.

Target Synonyms

dJ138B7.3; H-L(3)MBT; H-l(3)mbt protein; KIAA0681; L(3)mbt protein homolog; L(3)mbt-like; L3MBT; L3MBTL; L3MBTL1; Lethal (3) malignant brain tumor l(3; Lethal(3)malignant brain tumor-like protein 1; LMBL1_HUMAN; RGD1307316; ZC2HC3

Target Background

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.