component of both TORC1 and TORC2, which regulate multiple cellular processes to control cell growth in response to environmental signals. Nutrient limitation and environmental stress signals cause inactivation of TORC1. Active TORC1 positively controls cell growth and ribosome biogenesis by regulating ribosomal protein gene expression. TORC1 negatively controls G1 cell-cycle arrest, sexual development and amino acid uptake. Represses mating, meiosis and sporulation efficiency by interfering with the functions of the transcription factor ste11 and the meiosis-promoting RNA-binding protein mei2. TORC2 is required for cell survival under various stress conditions. TORC2 positively controls G1 cell-cycle arrest, sexual development and amino acid uptake. Positively regulates amino acid uptake through the control of expression of amino acid permeases (PubMed:17046992, PubMed:18076573, PubMed:17261596). May play a role in mRNA maturation as a coupling protein between splicing and synthesis and/or stabilization. The target of rapamycin complex 1 (TORC1) is composed of at least mip1, pop3/wat1, tco89, toc1 and tor2. The target of rapamycin complex 2 (TORC2) is composed of at least bit61, pop3/wat1, sin1, ste20 and tor1 (PubMed:17046992, PubMed:18076573, PubMed:17261596). Interacts with prp2 (PubMed:11686295). Belongs to the WD repeat LST8 family.