3.4.21.1	chymotrypsin	-	
3.4.21.10	acrosin	-	
3.4.21.100	sedolisin	-	
3.4.21.101	xanthomonalisin	-	
3.4.21.102	C-terminal processing peptidase	-	
3.4.21.103	physarolisin	-	
3.4.21.104	mannan-binding lectin-associated serine protease-2	-	
3.4.21.105	rhomboid protease	-	
3.4.21.106	hepsin	-	
3.4.21.107	peptidase Do	-