Exhibits carboxy-monopeptidase as well as carboxy-dipeptidase activity (PubMed:10504234). Capable of producing kinin potentiating peptides (By similarity). Release of C-terminal amino acid residues with broad specificity, but lacks action on C-terminal proline. Shows weak endopeptidase activity. The disulfide bridge formed between Cys-33 in the propeptide and the active site residue Cys-92 may prevent activation of the zymogen through formation of a reversible covalent bond with the active site residue. Widely expressed. Belongs to the peptidase C1 family.