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| 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 a 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 |
| 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 3.4.21.122 | transmembrane protease serine 2 | ||
| EC 3.4.21.123 | kumamolysin | ||
| EC 3.4.22 | [+] Cysteine endopeptidases | ||
| EC 3.4.23 | [+] Aspartic endopeptidases | ||
| EC 3.4.24 | [+] Metalloendopeptidases | ||
| EC 3.4.25 | [+] Threonine endopeptidases | ||
| EC 3.4.26 | [+] Glutamic 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 | [+] |