conversely , inhibitors of neutral endopeptidase ( phosphoramidon ) , post-proline cleaving enzyme ( z-pro-prolinal ) , carboxypeptidase n [ d-l-mercaptomethyl-3-guanidinoethylthiopropanoic acid ( mergetpa ) ] and angiotensin i converting enzyme ( captopril ) had no effect .
C0033382
proline
C0006938
captopril