the addition of inhibitors for serine proteinases ( phenylmethylsulfonylfluoride ) , cysteine proteinases ( leupeptin ) , aspartic proteinases ( pepstatin a ) and metalloproteinases ( edta ) does not alter the formation of acid soluble peptides , thus excluding the involvement of erythrocyte proteinases in the generation of peptides .
C0025543
metalloproteinases
C0030940
proteinases