The Enzyme Database

Table of Contents

The enzymes in this section of the database are organized as you would find them in the Enzyme-Nomenclature book. Click [+] to expand, and [–] to collapse, any section. Clicking on a heading will open popup window with information on that class, subclass or sub-subclass.

For a fully expanded list of the classes, subclasses and sub-subclasses, click here

[+subclass]. [+sub-subclass]. [+serial]

EC 1 [+]   
EC 2 [+]   
EC 3 []   
    EC 3.1  [+]      
    EC 3.2  [+]      
    EC 3.3  [+]      
    EC 3.4  []      
        EC 3.4.1       [+]    α-Amino-acyl-peptide hydrolases (deleted sub-subclass) 
        EC 3.4.2       [+]    Peptidyl-amino-acid hydrolases (deleted sub-subclass) 
        EC 3.4.3       [+]    Dipeptide hydrolases (deleted sub-subclass) 
        EC 3.4.4       [+]    Peptidyl peptide hydrolases (deleted sub-subclass) 
        EC 3.4.11       [+]    Aminopeptidases 
        EC 3.4.12       [+]    Peptidylamino-acid hydrolases or acylamino-acid hydrolases (deleted sub-subclass) 
        EC 3.4.13       [+]    Dipeptidases 
        EC 3.4.14       [+]    Dipeptidyl-peptidases and tripeptidyl-peptidases 
        EC 3.4.15       [+]    Peptidyl-dipeptidases 
        EC 3.4.16       [+]    Serine-type carboxypeptidases 
        EC 3.4.17       [+]    Metallocarboxypeptidases 
        EC 3.4.18       [+]    Cysteine-type carboxypeptidases 
        EC 3.4.19       [+]    Omega peptidases 
        EC 3.4.21       []    Serine endopeptidases 
                EC 3.4.21.1                      chymotrypsin 
                EC 3.4.21.2                      chymotrypsin C 
                EC 3.4.21.3                      metridin 
                EC 3.4.21.4                      trypsin 
                EC 3.4.21.5                      thrombin 
                EC 3.4.21.6                      coagulation factor Xa 
                EC 3.4.21.7                      plasmin 
                EC 3.4.21.8                      kallikrein. Now EC 3.4.21.34 (plasma kallikrein) and EC 3.4.21.35 (tissue kallikrein) 
                EC 3.4.21.9                      enteropeptidase 
                EC 3.4.21.10                      acrosin 
                EC 3.4.21.11                      elastase. Now EC 3.4.21.37, leukocyte elastase 
                EC 3.4.21.12                      α-lytic endopeptidase 
                EC 3.4.21.13                      Phaseolus proteinase. Now EC 3.4.16.6, carboxypeptidase D 
                EC 3.4.21.14                      now EC 3.4.21.67 endopeptidase So 
                EC 3.4.21.15                      Aspergillus alkaline proteinase. Now EC 3.4.21.63, oryzin 
                EC 3.4.21.16                      Alternaria serine proteinase 
                EC 3.4.21.17                       Arthrobacter serine proteinase 
                EC 3.4.21.18                      Tenebrio α-proteinase 
                EC 3.4.21.19                      glutamyl endopeptidase 
                EC 3.4.21.20                      cathepsin G 
                EC 3.4.21.21                      coagulation factor VIIa 
                EC 3.4.21.22                      coagulation factor IXa 
                EC 3.4.21.23                       Vipera russelli proteinase 
                EC 3.4.21.24                       red cell neutral endopeptidase 
                EC 3.4.21.25                      cucumisin 
                EC 3.4.21.26                      prolyl oligopeptidase 
                EC 3.4.21.27                      coagulation factor XIa 
                EC 3.4.21.28                      Agkistrodon serine proteinase. Now EC 3.4.21.74, venombin A 
                EC 3.4.21.29                      Bothrops atrox serine proteinase. Now EC 3.4.21.74, venombin A 
                EC 3.4.21.30                      Crotalus adamanteus serine proteinase. Now EC 3.4.21.74, venombin A 
                EC 3.4.21.31                      urokinase. Now EC 3.4.21.73, u-plasminogen activator 
                EC 3.4.21.32                      brachyurin 
                EC 3.4.21.33                      Entomophthora collagenolytic proteinase 
                EC 3.4.21.34                      plasma kallikrein 
                EC 3.4.21.35                      tissue kallikrein 
                EC 3.4.21.36                      pancreatic elastase 
                EC 3.4.21.37                      leukocyte elastase 
                EC 3.4.21.38                      coagulation factor XIIa 
                EC 3.4.21.39                      chymase 
                EC 3.4.21.40                       submandibular proteinase A 
                EC 3.4.21.41                      complement subcomponent C1r 
                EC 3.4.21.42                      complement subcomponent C1s 
                EC 3.4.21.43                      classical-complement-pathway C3/C5 convertase 
                EC 3.4.21.44                      complement component C5 convertase. Now EC 3.4.21.43, classical-complement-pathway C3/C5 convertase 
                EC 3.4.21.45                      complement factor I 
                EC 3.4.21.46                      complement factor D 
                EC 3.4.21.47                      alternative-complement-pathway C3/C5 convertase 
                EC 3.4.21.48                      cerevisin 
                EC 3.4.21.49                      hypodermin C 
                EC 3.4.21.50                      lysyl endopeptidase 
                EC 3.4.21.51                       Leukocyte-membrane neutral endopeptidase 
                EC 3.4.21.52                       Cathepsin R 
                EC 3.4.21.53                      endopeptidase La 
                EC 3.4.21.54                      γ-renin 
                EC 3.4.21.55                      venombin AB 
                EC 3.4.21.56                      euphorbain. Now considered EC 3.4.21.25, cucumisin 
                EC 3.4.21.57                      leucyl endopeptidase 
                EC 3.4.21.58                       prohormone serine proteinase 
                EC 3.4.21.59                      tryptase 
                EC 3.4.21.60                      scutelarin 
                EC 3.4.21.61                      kexin 
                EC 3.4.21.62                      subtilisin 
                EC 3.4.21.63                      oryzin 
                EC 3.4.21.64                      peptidase K 
                EC 3.4.21.65                      thermomycolin 
                EC 3.4.21.66                      thermitase 
                EC 3.4.21.67                      endopeptidase So 
                EC 3.4.21.68                      t-plasminogen activator 
                EC 3.4.21.69                      protein C (activated) 
                EC 3.4.21.70                      pancreatic endopeptidase E 
                EC 3.4.21.71                      pancreatic elastase II 
                EC 3.4.21.72                      IgA-specific serine endopeptidase 
                EC 3.4.21.73                      u-plasminogen activator 
                EC 3.4.21.74                      venombin A 
                EC 3.4.21.75                      furin 
                EC 3.4.21.76                      myeloblastin 
                EC 3.4.21.77                      semenogelase 
                EC 3.4.21.78                      granzyme A 
                EC 3.4.21.79                      granzyme B 
                EC 3.4.21.80                      streptogrisin A 
                EC 3.4.21.81                      streptogrisin B 
                EC 3.4.21.82                      glutamyl endopeptidase II 
                EC 3.4.21.83                      oligopeptidase B 
                EC 3.4.21.84                      limulus clotting factor C 
                EC 3.4.21.85                      limulus clotting factor B 
                EC 3.4.21.86                      limulus clotting enzyme 
                EC 3.4.21.87                      omptin. Now EC 3.4.23.49, omptin. The enzyme is not a serine protease, as thought previously, but an aspartate protease 
                EC 3.4.21.88                      repressor LexA 
                EC 3.4.21.89                      signal peptidase I 
                EC 3.4.21.90                      togavirin 
                EC 3.4.21.91                      flavivirin 
                EC 3.4.21.92                      endopeptidase Clp 
                EC 3.4.21.93                      proprotein convertase 1 
                EC 3.4.21.94                      proprotein convertase 2 
                EC 3.4.21.95                      snake venom factor V activator 
                EC 3.4.21.96                      lactocepin 
                EC 3.4.21.97                      assemblin 
                EC 3.4.21.98                      hepacivirin 
                EC 3.4.21.99                      spermosin 
                EC 3.4.21.100                      sedolisin 
                EC 3.4.21.101                      xanthomonalisin 
                EC 3.4.21.102                      C-terminal processing peptidase 
                EC 3.4.21.103                      physarolisin 
                EC 3.4.21.104                      mannan-binding lectin-associated serine protease-2 
                EC 3.4.21.105                      rhomboid protease 
                EC 3.4.21.106                      hepsin 
                EC 3.4.21.107                      peptidase Do 
                EC 3.4.21.108                      HtrA2 peptidase 
                EC 3.4.21.109                      matriptase 
                EC 3.4.21.110                      C5a peptidase 
                EC 3.4.21.111                      aqualysin 1 
                EC 3.4.21.112                      site-1 protease 
                EC 3.4.21.113                      pestivirus NS3 polyprotein peptidase 
                EC 3.4.21.114                      equine arterivirus serine peptidase 
                EC 3.4.21.115                      infectious pancreatic necrosis birnavirus Vp4 peptidase 
                EC 3.4.21.116                      SpoIVB peptidase 
                EC 3.4.21.117                      stratum corneum chymotryptic enzyme 
                EC 3.4.21.118                      kallikrein 8 
                EC 3.4.21.119                      kallikrein 13 
                EC 3.4.21.120                      oviductin 
                EC 3.4.21.121                      Lys-Lys/Arg-Xaa endopeptidase 
        EC 3.4.22       [+]    Cysteine endopeptidases 
        EC 3.4.23       [+]    Aspartic endopeptidases 
        EC 3.4.24       [+]    Metalloendopeptidases 
        EC 3.4.25       [+]    Threonine endopeptidases 
        EC 3.4.99       [+]    Endopeptidases of unknown catalytic mechanism (sub-subclass is currently empty) 
    EC 3.5  [+]      
    EC 3.6  [+]      
    EC 3.7  [+]      
    EC 3.8  [+]      
    EC 3.9  [+]      
    EC 3.10  [+]      
    EC 3.11  [+]      
    EC 3.12  [+]      
    EC 3.13  [+]      
EC 4 [+]   
EC 5 [+]   
EC 6 [+]   
EC 7 [+]   


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