MedicalTerminology DB

Meaning of DNA methyltransferase: An enzyme (a protein that speeds up chemical reactions in the body) that attaches a methyl group to DNA.

Definition 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.

Written and maintained by James Murray Last updated July 21, 2026 Educational reference, not medical advice. Read the limitations.

For learning, not diagnosis. This glossary provides general educational information and is not a substitute for advice from a qualified healthcare professional. If you may be experiencing a medical emergency, contact local emergency services.