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Home >Information for Patients > Dictionary Index

Dictionary of Cancer Terms

View in Spanish: Metiltransferasa de ADN

DNA methyltransferase ( MEH-thul-TRANZ-fer-ays)
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.

Source: National Cancer Institute Dictionary of Cancer Terms, available at www.cancer.gov/dictionary.