ID 3.4.22.40 DE Bleomycin hydrolase. AN Aminopeptidase C (Lactococcus lactis). CA Inactivates bleomycin B2 (a cytotoxic glycometallopeptide) by hydrolysis CA of a carboxyamide bond of beta-aminoalanine, but also shows general CA aminopeptidase activity. The specificity varies somewhat with source, CA but amino acid arylamides of Met, Leu and Ala are preferred. CC -!- The active sites are on the walls of a central channel through the CC molecule, and access of substrate molecules to them is obstructed by CC this and by the C-terminus of each polypeptide chain. CC -!- Bleomycin can scarcely be the natural substrate, and there are CC reports of limited endopeptidase activity. CC -!- Known from bacteria as well as eukaryotic organisms. CC -!- Hydrolase H from chicken muscle has many similarities to bleomycin CC hydrolase, but hydrolyzes Ph-CO-Arg-2-naphthylamine as well as CC aminopeptidase substrates. CC -!- Belongs to peptidase family C1. PR PROSITE; PDOC00126; DR Q01532, BLH1_YEAST ; P87362, BLMH_CHICK ; Q13867, BLMH_HUMAN ; DR Q8R016, BLMH_MOUSE ; P13019, BLMH_RABIT ; P70645, BLMH_RAT ; DR Q48543, PEPC_LACDL ; Q10744, PEPC_LACHE ; Q9CEG3, PEPC_LACLA ; DR Q04723, PEPC_LACLC ; Q928V0, PEPC_LISIN ; O69192, PEPC_LISMO ; DR Q56115, PEPC_STRTR ; //