Cleaves C-terminal amino acids linked to proline in peptides such as angiotensin II, III and des-Arg9-bradykinin. This cleavage occurs at acidic pH, but enzymatic activity is retained with some substrates at neutral pH (By similarity). Cleavage of a -Pro-|-Xaa bond to release a C-terminal amino acid. Homodimer. Belongs to the peptidase S28 family.