MedicalTerminology DB
Genetics & Molecular Biology

mammalian target of rapamycin

Meaning of mammalian target of rapamycin: A protein that helps control several cell functions, including cell division and survival, and binds to rapamycin and other drugs.

Definition of mammalian target of rapamycin

A protein that helps control several cell functions, including cell division and survival, and binds to rapamycin and other drugs. Mammalian target of rapamycin may be more active in some types of cancer cells than it is in normal cells. Blocking mammalian target of rapamycin may cause the cancer cells to die. It is a type of serine/threonine protein kinase. Also called mTOR.

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.