3.4.21.4	alpha-trypsin, anionic salmon trypsin, anionic trypsin, Anionic trypsinogen, AST, aT-I, aT-II, Atlantic cod trypsin I, beta-trypsin, BPT, Brain trypsinogen, BT, cationic trypsin, Cationic trypsinogen, cocoonase, CST, EFE, EG-T, fibrinolytic enzyme, gamma-trypsin, GM-T, group III trypsin, mesotrypsin, Mesotrypsinogen, midgut-specific serine protease 1, midgut-specific serine protease 2, p23, parenzyme, parenzymol, PPT, pro23, pseudotrypsin, SET, SGT, sperm receptor hydrolase, TLE, TLE I, TLE II, TR-P, TR-S, tripcellim, TRP, Try, TRY-3, TRYP, trypsin 1, trypsin 3A1, trypsin 4, trypsin A, trypsin B, trypsin I, trypsin IV, trypsin type III, trypsin Y, trypsin-3, trypsin-like enzyme, trypsin-like serine proteinase, tryptar, tryptase, trypure, type I trypsin, type IX pancreatic trypsin	-	-, 649145, 649162, 650230, 650242, 652898, 653033, 653809, 668694, 669856, 677545, 677842, 678332, 678896, 679341, 679743, 679835, 680209, 680742, 680807, 680808, 681538, 682658, 682760, 691248, 695996, 696590, 696721, 697021, 699161, 699194, 699727, 699735, 699738, 700007, 701375, 707616, 708221, 708223, 708552, 710193, 710556, 717516, 731937, 95433, 95435	
3.4.21.4	TrypZean	bovine-sequence trypsin solution produced from corn, commercial recombinant enzyme preparation	701270	
3.4.21.4	trypsin-4	brain isozyme	700478	
3.4.21.4	EC 3.4.4.4	formerly	-	
3.4.21.4	ST-1, ST-2, ST-3, TI, TIIA, TIII, TryI, TryII, TryIII, trypsin-1, trypsin-2	isozyme	678548, 681235, 695989, 700478	
3.4.21.4	acrosin	serine protease with trypsin-like activity specific of the spermatozoa	695083	
3.4.21.4	additional information	trypsin is a member of the large family of serine proteases	717554