DNMT1: Activity Assays

DNMT1 (DNA methyltransferase 1; also MCMT and CXXC-type Zn finger protein 9) is a 190 kDa member of the C5-methyltransferase family of enzymes. DNMT1 is ubiquitous in expression, and appears during the S-phase of the cell cycle. DNMT1 catalyzes the attachment of a methyl group to the C5 position of CpG cytosines using AdoMet/adenosylmethionine as a co factor. This acts to silence select genes during X chromosome inactivation and tumorigenesis. Human DNMT1 is 1616 amino acids (aa) in length. ...