<n0:ComplexDefinition xmlns:n0="http://ncicb.nci.nih.gov/xml/owl/EVS/ComplexProperties.xsd#"><n0:def-definition>Any substance that inhibits mammalian target of rapamycin (mTOR or FK506 binding protein 12-rapamycin associated protein 1 (FRAP1)), a serine/threonine protein kinase that is active in the control of cell growth, cell proliferation, and cell motility. Inhibition of mTOR can inhibit cell proliferation.</n0:def-definition><n0:def-source>NCI</n0:def-source></n0:ComplexDefinition>