Dnmt1 Protein is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
DNA Methyltransferase 1 (DNMT1) is the primary maintenance DNA methyltransferase responsible for copying DNA methylation patterns during DNA replication[1]. It catalyzes the addition of methyl groups to cytosine residues in CpG dinucleotides, playing essential roles in genomic imprinting, X-chromosome inactivation, and cellular differentiation. DNMT1 dysfunction is implicated in Alzheimer's disease, Parkinson's disease, and various cancers[2].
| DNMT1 Protein | |
|---|---|
| Protein Name | DNA Methyltransferase 1 |
| Gene | DNMT1 |
| UniProt ID | P26358 |
| PDB ID(s) | 3AV0, 4WXX |
| Molecular Weight | 183 kDa |
| Subcellular Localization | Nucleus |
| Protein Family | DNA methyltransferase family |
| Expression | Ubiquitous, high in proliferating cells |
DNMT1 contains multiple functional domains[3]:
N-terminal regulatory domain:
C-terminal catalytic domain (501-1620):
DNMT1 alterations in AD include[4]:
| Drug | Type | Approval | Indication |
|---|---|---|---|
| Azacitidine | Nucleoside analog | 2004 | MDS, AML |
| Decitabine | Nucleoside analog | 2006 | MDS, AML |
| Guadecitabine | Second-generation | Clinical trials | Various |
The study of Dnmt1 Protein 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.
Robertson KD, et al. (1999). "DNA methyltransferases." Pharmacogenomics. 1(1):3-19. PMID:11281539. ↩︎
Esteller M. (2002). "CpG island hypermethylation and tumor suppressor genes: a booming present, a brighter future." Oncogene. 21(35):5427-5440. PMID:12154440. ↩︎
Syeda F, et al. (2011). "The replication focus targeting domain (RFTS) of DNMT1 is essential for the protein to maintain DNA methylation." J Biol Chem. 286(16):14344-14351. PMID:21349843. ↩︎
Chouliaras L, et al. (2013). "Epigenetic regulation in the pathophysiology of Alzheimer's disease." Prog Neuropsychopharmacol Biol Psychiatry. 45:86-97. PMID:23523762. ↩︎