DNA methyltransferase

Definition / meaning of DNA methyltransferase

An enzyme (a protein that speeds up chemical reactions in the body) that attaches a methyl group to DNA. A methyl group is a chemical group containing one carbon and three hydrogen molecules. Also called DNA methylase.

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Find More About 'DNA methyltransferase'

Source(s):

The Web site of the National Cancer Institute (http://www.cancer.gov/)

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