Hydrolases (3. ) (e.g., Urease, Lipase, Asparaginase, Muramidase, Etc.) Patents (Class 424/94.6)
- Serine proteinases (3.4.21) (e.g., trypsin, chymotrypsin, plasmin, thrombin, elastase, kallikrein, fibrinolysin, streptokinease, etc.) (Class 424/94.64)
- SH-proteinases (3.4.22) (e.g., papain, chymopapain, bromelains, ficin, etc.) (Class 424/94.65)
- Acid proteinases (3.4.23) (e.g., pepsin, renin, chymosin, etc.) (Class 424/94.66)
- Metalloproteinases (3.4.24) (e.g., collagenase, snake venom zinc proteinase, etc.) (Class 424/94.67)