Involved in both selective and non-selective autophagy (PubMed:26565778). Does not appear to play a role in determining the size of autophagosomes, but rather influences their formation rate (PubMed:26565778). With ATG9, plays a role in the delivery of donor membrane to expanding phagophore (PubMed:26565778). Interacts with ATG9 (PubMed:26565778). Shows a peri-mitochondrial distribution similar to ATG9 (PubMed:26565778). Expression is dramatically increased under nitrogen starvation conditions and is regulated by the transcription factor GCN4 (PubMed:26565778). The C-terminal 10 residues are required for the association with ATG9 (PubMed:26565778). Reduces the autophagy flux induced by nitrogen starvation as well as the flux of the cytoplasm-to-vacuole targeting (cvt) pathway (PubMed:26565778). Present with 450 molecules/cell in log phase SD medium.