Predicted to enable cysteine-type endopeptidase activity and protein-phosphatidylethanolamide deconjugating activity. Predicted to be involved in macroautophagy and protein processing. Predicted to act upstream of or within several processes, including autophagy; protein transport; and proteolysis. Predicted to be active in cytoplasm. Is expressed in liver. Orthologous to human ATG4A (autophagy related 4A cysteine peptidase).