Recombinant mouse Dnmt1 protein

Specifications

Form

Liquid

Additional notes

Affinity purified.

General info

Function

Methylates CpG residues. Preferentially methylates hemimethylated DNA. Associates with DNA replication sites in S phase maintaining the methylation pattern in the newly synthesized strand, that is essential for epigenetic inheritance. Associates with chromatin during G2 and M phases to maintain DNA methylation independently of replication. It is responsible for maintaining methylation patterns established in development. DNA methylation is coordinated with methylation of histones. Mediates transcriptional repression by direct binding to HDAC2. In association with DNMT3B and via the recruitment of CTCFL/BORIS, involved in activation of BAG1 gene expression by modulating dimethylation of promoter histone H3 at H3K4 and H3K9. Probably forms a corepressor complex required for activated KRAS-mediated promoter hypermethylation and transcriptional silencing of tumor suppressor genes (TSGs) or other tumor-related genes in colorectal cancer (CRC) cells (By similarity). Also required to maintain a transcriptionally repressive state of genes in undifferentiated embryonic stem cells (ESCs) (By similarity). Associates at promoter regions of tumor suppressor genes (TSGs) leading to their gene silencing (By similarity). Promotes tumor growth (By similarity).

Sequence similarities

Belongs to the class I-like SAM-binding methyltransferase superfamily. C5-methyltransferase family.

Post-translational modifications

Sumoylated; sumoylation increases activity.. Phosphorylation at Ser-146 by CK1 reduces DNA-binding activity.. Acetylation on multiple lysines, mainly by KAT2B/PCAF, regulates cell cycle G(2)/M transition. Deacetylation of Lys-1352 and Lys-1418 by SIRT1 increases methyltransferase activity.. Phosphorylation of Ser-152 by CDKs is important for enzymatic activity and protein stability. Phosphorylation of Ser-140 by AKT1 prevents methylation by SETD7 therebye increasing DNMT1 stability.. Methylation at Lys-139 by SETD7 is necessary for the regulation of DNMT1 proteasomal degradation.. Ubiquitinated by UHRF1; interaction with USP7 counteracts ubiquitination by UHRF1 by promoting deubiquitination and preventing degradation by the proteasome.

Subcellular localisation

Nucleus