Lipid transport protein; involved in vacuolar protein sorting, protein retention in the Golgi, and prospore membrane formation; required for mitochondrial integrity and ER packaging into autophagosomes during cortical reticulophagy; role in membrane remodeling for MVB biogenesis with phospholipid scramblase Any1p; peripheral membrane protein of the prospore membrane and membrane contact sites; homolog of human VPS13A and VPS13B, involved in Chorea-acanthocytosis and Cohen syndrome, respectively