Plays a key role in autophagy. Activates the atg1 kinase in a nutritional condition dependent manner through the TOR pathway, leading to autophagy. Also involved in cytoplasm to vacuole transport (Cvt) and more specifically in Cvt vesicle formation. Seems to play a role in the switching machinery regulating the conversion between the Cvt pathway and autophagy. Finally, plays an important role in biofilm formation and resistance to antifungal compounds such as fluconazole, itraconazole, terbinafine and caspofungin