Removes acidic, neutral and basic amino acids as well as proline from the C-terminal position. Digests preferentially peptides containing a hydrophobic residue in P1' position, as well as arginine, lysine or phenylalanine in P1 position of ester substrate. Catalyzes also peptide synthesis. Inhibited by DFP. Optimum pH is 4. Unstable above pH 8. Monomer. Contains both N- and O-linked sugar chains. The N-linked oligosaccharides are unique structures of Man(10)GlcNAc(2) and Man(11)GlcNAc(2). Deglycosylation does neither affect catalytic activity, pH, thermal stability, or resistance to proteolysis of the enzyme. Belongs to the peptidase S10 family.