Background:
Catalyzes the peptide bond hydrolysis in dipeptides, displaying a non-redundant activity toward threonyl dipeptides (By similarity).Mediates threonyl dipeptide catabolism in a tissue-specific way (By similarity).Has high dipeptidase activity toward cysteinylglycine, an intermediate metabolite in glutathione metabolism (PubMed:19346245, PubMed:12473676).Metabolizes N-lactoyl-amino acids, both through hydrolysis to form lactic acid and amino acids, as well as through their formation by reverse proteolysis (PubMed:25964343).Plays a role in the regulation of cell cycle arrest and apoptosis (PubMed:17121880, PubMed:24395568).