Mll1 Histone H3K4 Methyltransferase (Kmt2A) is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
| KMT2A Protein | |
|---|---|
| Gene | KMT2A |
| UniProt ID | Q16586 |
| PDB ID(s) | 5F5B, 6K5U |
| Molecular Weight | 432 kDa |
| Subcellular Localization | Nucleus |
| Protein Family | SET1/MLL COMPASS Family |
| Histone H3K4 methyltransferase, epigenetic regulator of gene transcription | |
| Associated Diseases | Alzheimer's Disease, Parkinson's Disease, Huntington's Disease, MLL-rearranged Leukemia |
KMT2A (MLL1) is a large histone methyltransferase that catalyzes H3K4 trimethylation, a hallmark of active gene promoters and enhancers. It is part of the COMPASS complex that regulates developmental gene expression. In neurons, MLL1 regulates genes critical for synaptic plasticity, learning, and memory. Dysregulation of MLL1-mediated epigenetic control contributes to neurodegenerative processes through altered expression of neuronal survival genes.
KMT2A belongs to the SET1/MLL COMPASS Family. The protein contains:
The three-dimensional structure has been solved (5F5B, 6K5U), revealing insights into mechanism and drug binding.
KMT2A plays critical roles in normal neuronal function:
Dysregulation of KMT2A contributes to neurodegenerative processes through several mechanisms:
Therapeutic strategies targeting KMT2A include:
| Approach | Status | Notes |
|---|---|---|
| Small molecule inhibitors | Preclinical | Various compounds in development |
| Epigenetic modulators | Research | Broader specificity |
| Gene therapy | Experimental | AAV-delivered functional copies |
| Protein-protein interaction inhibitors | Research | Targeting complex formation |
KMT2A expression and activity can be measured in:
The study of Mll1 Histone H3K4 Methyltransferase (Kmt2A) has evolved significantly over the past decades. Research in this area has revealed important insights into the underlying mechanisms of neurodegeneration and continues to drive therapeutic development.
Historical context and key discoveries in this field have shaped our current understanding and will continue to guide future research directions.