Effector of phosphatidylinositol 3-phosphate kinase signaling (By similarity). Regulates the cytoplasm to vacuole transport (Cvt) vesicle formation. Plays a role in ATG protein retrieval from the pre-autophagosomal structure (PAS) (By similarity). Cycles among the pre-autophagosomal structure (PAS), mitochondria and Golgi. Belongs to the ATG27 family.