UniProt Summary: Cysteine protease required for the cytoplasm to vacuole transport (Cvt) and autophagy. Is not essential for autophagy development under normal conditions but is required for a proper autophagic response under stressful conditions such as prolonged starvation (By similarity). Cleaves the C-terminal amino acid of ATG8 family proteins MAP1LC3 and GABARAPL2, to reveal a C-terminal glycine. Exposure of the glycine at the C-terminus is essential for ATG8 proteins conjugation to phosphatidylethanolamine (PE) and insertion to membranes, which is necessary for autophagy. Has also an activity of delipidating enzyme for the PE-conjugated forms. {ECO:0000250, ECO:0000269|PubMed:21177865}.
Pfam DomainsGO Terms
Pfam Domains
Peptidase C54
GO Terms
cysteine-type endopeptidase activity
process utilizing autophagic mechanism
autophagy
proteolysis
protein transport
peptide transport
amide transport
establishment of protein localization
cellular catabolic process
nitrogen compound transport
CRISPR Data
Compound HitMost Correlated Genes in ChemogenomicsTissues where Essential in the Avana Dataset (DepMap 20Q1)