1. Oxidoreductases
2. Transferases
3. Hydrolases
3.1 Acting on ester bonds
3.2 Glycosylases
3.3 Acting on ether bonds
3.4 Acting on peptide bonds (peptidases)
3.4.11 Aminopeptidases
3.4.13 Dipeptidases
3.4.14 Dipeptidyl-peptidases and tripeptidyl-peptidases
3.4.15 Peptidyl-dipeptidases
3.4.16 Serine-type carboxypeptidases
3.4.17 Metallocarboxypeptidases
3.4.18 Cysteine-type carboxypeptidases
3.4.19 Omega peptidases
3.4.21 Serine endopeptidases
3.4.21.1 chymotrypsin
3.4.21.2 chymotrypsin C
3.4.21.3 metridin
3.4.21.4 trypsin
102260180 PRSS2; protease, serine 2 102255810 cationic trypsin-3 102248102 anionic trypsin
K01312 PRSS1_2_3; trypsin [EC:3.4.21.4] K01312 PRSS1_2_3; trypsin [EC:3.4.21.4] K01312 PRSS1_2_3; trypsin [EC:3.4.21.4]
3.4.21.5 thrombin
3.4.21.6 coagulation factor Xa
3.4.21.7 plasmin
3.4.21.9 enteropeptidase
3.4.21.10 acrosin
3.4.21.12 alpha-lytic endopeptidase
3.4.21.19 glutamyl endopeptidase
3.4.21.20 cathepsin G
3.4.21.21 coagulation factor VIIa
3.4.21.22 coagulation factor IXa
3.4.21.25 cucumisin
3.4.21.26 prolyl oligopeptidase
3.4.21.27 coagulation factor XIa
3.4.21.32 brachyurin
3.4.21.34 plasma kallikrein
3.4.21.35 tissue kallikrein
3.4.21.36 pancreatic elastase
3.4.21.37 leukocyte elastase
3.4.21.38 coagulation factor XIIa
3.4.21.39 chymase
3.4.21.41 complement subcomponent C_overbar_1r_
3.4.21.42 complement subcomponent C_overbar_1s_
3.4.21.43 classical-complement-pathway C3/C5 convertase
3.4.21.45 complement factor I
3.4.21.46 complement factor D
3.4.21.47 alternative-complement-pathway C3/C5 convertase
3.4.21.48 cerevisin
3.4.21.49 hypodermin C
3.4.21.50 lysyl endopeptidase
3.4.21.53 endopeptidase La
3.4.21.54 gamma-renin
3.4.21.55 venombin AB
3.4.21.57 leucyl endopeptidase
3.4.21.59 tryptase
3.4.21.60 scutelarin
3.4.21.61 kexin
3.4.21.62 subtilisin
3.4.21.63 oryzin
3.4.21.64 peptidase K
3.4.21.65 thermomycolin
3.4.21.66 thermitase
3.4.21.67 endopeptidase So
3.4.21.68 t-plasminogen activator
3.4.21.69 protein C (activated)
3.4.21.70 pancreatic endopeptidase E
3.4.21.71 pancreatic elastase II
3.4.21.72 IgA-specific serine endopeptidase
3.4.21.73 u-plasminogen activator
3.4.21.74 venombin A
3.4.21.75 furin
3.4.21.76 myeloblastin
3.4.21.77 semenogelase
3.4.21.78 granzyme A
3.4.21.79 granzyme B
3.4.21.80 streptogrisin A
3.4.21.81 streptogrisin B
3.4.21.82 glutamyl endopeptidase II
3.4.21.83 oligopeptidase B
3.4.21.84 limulus clotting factor _overbar_C_
3.4.21.85 limulus clotting factor _overbar_B_
3.4.21.86 limulus clotting enzyme
3.4.21.88 repressor LexA
3.4.21.89 signal peptidase I
3.4.21.90 togavirin
3.4.21.91 flavivirin
3.4.21.92 endopeptidase Clp
3.4.21.93 proprotein convertase 1
3.4.21.94 proprotein convertase 2
3.4.21.95 snake venom factor V activator
3.4.21.96 lactocepin
3.4.21.97 assemblin
3.4.21.98 hepacivirin
3.4.21.99 spermosin
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
3.4.21.108 HtrA2 peptidase
3.4.21.109 matriptase
3.4.21.110 C5a peptidase
3.4.21.111 aqualysin 1
3.4.21.112 site-1 protease
3.4.21.113 pestivirus NS3 polyprotein peptidase
3.4.21.114 equine arterivirus serine peptidase
3.4.21.115 infectious pancreatic necrosis birnavirus Vp4 peptidase
3.4.21.116 SpoIVB peptidase
3.4.21.117 stratum corneum chymotryptic enzyme
3.4.21.118 kallikrein 8
3.4.21.119 kallikrein 13
3.4.21.120 oviductin
3.4.21.121 Lys-Lys/Arg-Xaa endopeptidase
3.4.21.122 transmembrane protease serine 2
3.4.21.123 kumamolysin
3.4.22 Cysteine endopeptidases
3.4.23 Aspartic endopeptidases
3.4.24 Metalloendopeptidases
3.4.25 Threonine endopeptidases
3.4.26 Glutamic endopeptidases
3.5 Acting on carbon-nitrogen bonds, other than peptide bonds
3.6 Acting on acid anhydrides
3.7 Acting on carbon-carbon bonds
3.8 Acting on halide bonds
3.9 Acting on phosphorus-nitrogen bonds
3.10 Acting on sulfur-nitrogen bonds
3.11 Acting on carbon-phosphorus bonds
3.12 Acting on sulfur-sulfur bonds
3.13 Acting on carbon-sulfur bonds
4. Lyases
5. Isomerases
6. Ligases
7. Translocases