PIK-related protein kinase and rapamycin target; subunit of TORC1, a complex that regulates growth in response to nutrients and TORC2, a complex that regulates homeostasis of plasma membrane (PM) tension and cell-cycle dependent polarization of the actin cytoskeleton; involved in meiosis; PM retention is dependent on Avo3p; malonyl-CoA is a direct ATP-competitive inhibitor of TORC1; TOR2 has a paralog, TOR1, that arose from the whole genome duplication