Broad specificity carboxypetidase that releases amino acids sequentially from the C-terminus, including neutral, aromatic, polar and basic residues, but not Pro. Release of a C-terminal amino acid with broad specificity, except for -Pro. Binds 1 zinc ion per subunit. Can also utilize cobalt ions, but contains bound zinc when purified after heterologous expression in E.coli. Inhibited by metal-chelating reagents. Strongly inhibited by 1 mM Zn(2+), slightly inhibited by 0.1 mM Zn(2+), not inhibited by 0.01 mM Zn(2+). Not inhibited by cobalt ions. Optimum pH is 8.0. Optimum temperature is 80 degrees Celsius. Monomer. Belongs to the peptidase M32 family.