Aliases for KMT2A Gene
- Lysine Methyltransferase 2A 2 3 5
- Histone-Lysine N-Methyltransferase 2A 2 3 4
- Myeloid/Lymphoid Or Mixed-Lineage Leukemia (Trithorax Homolog, Drosophila) 2 3
- Lysine (K)-Specific Methyltransferase 2A 2 3
- CXXC-Type Zinc Finger Protein 7 3 4
- Lysine N-Methyltransferase 2A 3 4
- Zinc Finger Protein HRX 3 4
- Trithorax-Like Protein 3 4
- ALL-1 3 4
- CXXC7 3 4
- MLL1 3 4
- TRX1 3 4
External Ids for KMT2A Gene
Previous HGNC Symbols for KMT2A Gene
Previous GeneCards Identifiers for KMT2A Gene
This gene encodes a transcriptional coactivator that plays an essential role in regulating gene expression during early development and hematopoiesis. The encoded protein contains multiple conserved functional domains. One of these domains, the SET domain, is responsible for its histone H3 lysine 4 (H3K4) methyltransferase activity which mediates chromatin modifications associated with epigenetic transcriptional activation. This protein is processed by the enzyme Taspase 1 into two fragments, MLL-C and MLL-N. These fragments reassociate and further assemble into different multiprotein complexes that regulate the transcription of specific target genes, including many of the HOX genes. Multiple chromosomal translocations involving this gene are the cause of certain acute lymphoid leukemias and acute myeloid leukemias. Alternate splicing results in multiple transcript variants.[provided by RefSeq, Oct 2010]
GeneCards Summary for KMT2A Gene
KMT2A (Lysine Methyltransferase 2A) is a Protein Coding gene. Diseases associated with KMT2A include Wiedemann-Steiner Syndrome and Acute Myeloid Leukemia With T(9;11)(P22;Q23). Among its related pathways are Circadian rythm related genes and PKMTs methylate histone lysines. Gene Ontology (GO) annotations related to this gene include DNA-binding transcription factor activity and identical protein binding. An important paralog of this gene is KMT2B.
UniProtKB/Swiss-Prot Summary for KMT2A Gene
Histone methyltransferase that plays an essential role in early development and hematopoiesis. Catalytic subunit of the MLL1/MLL complex, a multiprotein complex that mediates both methylation of 'Lys-4' of histone H3 (H3K4me) complex and acetylation of 'Lys-16' of histone H4 (H4K16ac). In the MLL1/MLL complex, it specifically mediates H3K4me, a specific tag for epigenetic transcriptional activation (PubMed:12453419, PubMed:20677832, PubMed:26886794). Has weak methyltransferase activity by itself, and requires other component of the MLL1/MLL complex to obtain full methyltransferase activity (PubMed:19187761, PubMed:26886794). Has no activity toward histone H3 phosphorylated on 'Thr-3', less activity toward H3 dimethylated on 'Arg-8' or 'Lys-9', while it has higher activity toward H3 acetylated on 'Lys-9'. Binds to unmethylated CpG elements in the promoter of target genes and helps maintain them in the nonmethylated state (PubMed:20010842). Required for transcriptional activation of HOXA9 (PubMed:12453419, PubMed:20677832, PubMed:20010842). Promotes PPP1R15A-induced apoptosis. Plays a critical role in the control of circadian gene expression and is essential for the transcriptional activation mediated by the CLOCK-ARNTL/BMAL1 heterodimer. Establishes a permissive chromatin state for circadian transcription by mediating a rhythmic methylation of 'Lys-4' of histone H3 (H3K4me) and this histone modification directs the circadian acetylation at H3K9 and H3K14 allowing the recruitment of CLOCK-ARNTL/BMAL1 to chromatin (By similarity).
Lysine methyltransferases are enyzmes that catalyze the transfer of methyl groups from S-adenosylmethionine (SAM) to the lysine residues on histones, particularly histones H3 and H4. The dysregulation of this methylation is critical in the development of cancer.