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 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

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

EC 1 []   
    EC 1.1  [+]      
    EC 1.2  [+]      
    EC 1.3  []      
        EC 1.3.1       []    With NAD+ or NADP+ as acceptor 
                EC                      dihydropyrimidine dehydrogenase (NAD+) 
                EC                      dihydropyrimidine dehydrogenase (NADP+) 
                EC                      Δ4-3-oxosteroid 5β-reductase 
                EC                      EC, cortisone α-reductase, transferred to EC, 3-oxo-5α-steroid 4-dehydrogenase (NADP+) 
                EC                      cucurbitacin Δ23-reductase 
                EC                      fumarate reductase (NADH) 
                EC                      meso-tartrate dehydrogenase 
                EC                      acyl-CoA dehydrogenase (NADP+) 
                EC                      enoyl-[acyl-carrier-protein] reductase (NADH) 
                EC                      enoyl-[acyl-carrier-protein] reductase (NADPH, Si-specific) 
                EC                      2-coumarate reductase 
                EC                      prephenate dehydrogenase 
                EC                      prephenate dehydrogenase (NADP+) 
                EC                      dihydroorotate dehydrogenase (NAD+) 
                EC                      dihydroorotate dehydrogenase (NADP+) 
                EC                      β-nitroacrylate reductase 
                EC                      3-methyleneoxindole reductase 
                EC                      kynurenate-7,8-dihydrodiol dehydrogenase 
                EC                      cis-1,2-dihydrobenzene-1,2-diol dehydrogenase 
                EC                      trans-1,2-dihydrobenzene-1,2-diol dehydrogenase 
                EC                      7-dehydrocholesterol reductase 
                EC                      3-oxo-5α-steroid 4-dehydrogenase (NADP+) 
                EC                       cholestenone β-reductase. The enzyme is identical to EC, Δ4-3-oxosteroid 5β-reductase 
                EC                      biliverdin reductase 
                EC                      1,6-dihydroxycyclohexa-2,4-diene-1-carboxylate dehydrogenase 
                EC                      dihydrodipicolinate reductase. Now EC, 4-hydroxy-tetrahydrodipicolinate reductase. 
                EC                      2-hexadecenal reductase 
                EC                      2,3-dihydro-2,3-dihydroxybenzoate dehydrogenase 
                EC                      cis-1,2-dihydro-1,2-dihydroxynaphthalene dehydrogenase 
                EC                      EC, progesterone 5α-reductase, transferred to EC, 3-oxo-5α-steroid 4-dehydrogenase (NADP+). 
                EC                      2-enoate reductase 
                EC                      maleylacetate reductase 
                EC                      protochlorophyllide reductase 
                EC                      2,4-dienoyl-CoA reductase [(2E)-enoyl-CoA-producing] 
                EC                      phosphatidylcholine desaturase. Now EC, microsomal oleoyl-lipid 12-desaturase 
                EC                      geissoschizine dehydrogenase 
                EC                      cis-2-enoyl-CoA reductase (NADPH) 
                EC                      trans-2-enoyl-CoA reductase (NADPH) 
                EC                      enoyl-[acyl-carrier-protein] reductase (NADPH, Re-specific) 
                EC                      2-hydroxy-6-oxo-6-phenylhexa-2,4-dienoate reductase 
                EC                      xanthommatin reductase 
                EC                      12-oxophytodienoate reductase 
                EC                      arogenate dehydrogenase 
                EC                      trans-2-enoyl-CoA reductase (NAD+) 
                EC                      2′-hydroxyisoflavone reductase 
                EC                      biochanin-A reductase 
                EC                      α-santonin 1,2-reductase 
                EC                      13,14-dehydro-15-oxoprostaglandin 13-reductase 
                EC                      cis-3,4-dihydrophenanthrene-3,4-diol dehydrogenase 
                EC                       tetrahydroxynaphthalene reductase. Now EC tetrahydroxynaphthalene reductase 
                EC                      2′-hydroxydaidzein reductase 
                EC                      2-methyl-branched-chain-enoyl-CoA reductase. Now EC, 2-methyl-branched-chain-enoyl-CoA reductase 
                EC                      (3S,4R)-3,4-dihydroxycyclohexa-1,5-diene-1,4-dicarboxylate dehydrogenase 
                EC                      precorrin-6A reductase 
                EC                       cis-1,2-dihydroxycyclohexa-3,5-diene-1-carboxylate dehydrogenase. Enzyme is identical to EC, 1,6-dihydroxycyclohexa-2,4-diene-1-carboxylate dehydrogenase 
                EC                      cis-2,3-dihydrobiphenyl-2,3-diol dehydrogenase 
                EC                      phloroglucinol reductase 
                EC                      2,3-dihydroxy-2,3-dihydro-p-cumate dehydrogenase 
                EC                      1,2-dihydroxy-3-methyl-1,2-dihydrobenzoate dehydrogenase. No evidence in the paper cited that the enzyme exists 
                EC                      dibenzothiophene dihydrodiol dehydrogenase 
                EC                      terephthalate 1,2-cis-dihydrodiol dehydrogenase. Enzyme is identical to EC, (3S,4R)-3,4-dihydroxycyclohexa-1,5-diene-1,4-dicarboxylate dehydrogenase 
                EC                      pimeloyl-CoA dehydrogenase 
                EC                      2,4-dichlorobenzoyl-CoA reductase. Now EC, 2,4-dichlorobenzoyl-CoA reductase 
                EC                      phthalate 4,5-cis-dihydrodiol dehydrogenase 
                EC                      5,6-dihydroxy-3-methyl-2-oxo-1,2,5,6-tetrahydroquinoline dehydrogenase 
                EC                      cis-dihydroethylcatechol dehydrogenase 
                EC                      cis-1,2-dihydroxy-4-methylcyclohexa-3,5-diene-1-carboxylate dehydrogenase 
                EC                      1,2-dihydroxy-6-methylcyclohexa-3,5-dienecarboxylate dehydrogenase 
                EC                      zeatin reductase 
                EC                      Δ14-sterol reductase 
                EC                      Δ24(241)-sterol reductase 
                EC                      Δ24-sterol reductase 
                EC                      1,2-dihydrovomilenine reductase 
                EC                      2-alkenal reductase [NAD(P)+] 
                EC                      3,8-divinyl protochlorophyllide a 8-vinyl-reductase (NADPH) 
                EC                      precorrin-2 dehydrogenase 
                EC                      anthocyanidin reductase [(2R,3R)-flavan-3-ol-forming] 
                EC                      arogenate dehydrogenase (NADP+) 
                EC                      arogenate dehydrogenase [NAD(P)+] 
                EC                      red chlorophyll catabolite reductase. Now classified as EC, red chlorophyll catabolite reductase 
                EC                      (+)-pulegone reductase 
                EC                      (-)-isopiperitenone reductase 
                EC                      geranylgeranyl diphosphate reductase 
                EC                      acrylyl-CoA reductase (NADPH) 
                EC                      crotonyl-CoA carboxylase/reductase 
                EC                      crotonyl-CoA reductase 
                EC                      3-(cis-5,6-dihydroxycyclohexa-1,3-dien-1-yl)propanoate dehydrogenase 
                EC                      tRNA-dihydrouridine16/17 synthase [NAD(P)+] 
                EC                      tRNA-dihydrouridine47 synthase [NAD(P)+] 
                EC                      tRNA-dihydrouridine20a/20b synthase [NAD(P)+] 
                EC                      tRNA-dihydrouridine20 synthase [NAD(P)+] 
                EC                      artemisinic aldehyde Δ11(13)-reductase 
                EC                      very-long-chain enoyl-CoA reductase 
                EC                      polyprenol reductase 
                EC                      acrylyl-CoA reductase (NADH) 
                EC                      Botryococcus squalene synthase 
                EC                      botryococcene synthase 
                EC                      UDP-N-acetylmuramate dehydrogenase 
                EC                      iridoid synthase. Now known to be catalyzed by two different enzymes, EC, (S)-8-oxocitronellyl enol synthase, and EC, (+)-cis,trans-nepetalactol synthase 
                EC                      chanoclavine-I aldehyde reductase 
                EC                      2,3-bis-O-geranylgeranyl-sn-glycerol 1-phosphate reductase [NAD(P)H] 
                EC                      2-alkenal reductase (NADP+) 
                EC                      2-haloacrylate reductase 
                EC                      enoyl-[acyl-carrier-protein] reductase (NADPH) 
                EC                      2-methylene-furan-3-one reductase 
                EC                      cobalt-precorrin-6A reductase 
                EC                      sanguinarine reductase 
                EC                      caffeoyl-CoA reductase 
                EC                      butanoyl-CoA dehydrogenase complex (NAD+, ferredoxin) 
                EC                      lactate dehydrogenase (NAD+, ferredoxin). Now EC, lactate dehydrogenase (NAD+,ferredoxin) 
                EC                      geranylgeranyl-bacteriochlorophyllide a reductase 
                EC                      anthocyanidin reductase [(2S)-flavan-3-ol-forming] 
                EC                      (4-alkanoyl-5-oxo-2,5-dihydrofuran-3-yl)methyl phosphate reductase 
                EC                      3-dehydro-bile acid Δ4,6-reductase 
                EC                      3-oxocholoyl-CoA 4-desaturase 
                EC                      7β-hydroxy-3-oxochol-24-oyl-CoA 4-desaturase 
                EC                      hydroxycinnamoyl-CoA reductase 
                EC                      meromycolic acid enoyl-[acyl-carrier-protein] reductase 
                EC                      chlorobenzene dihydrodiol dehydrogenase 
                EC                      cyclohexane-1-carbonyl-CoA reductase (NADP+) 
                EC                      4-amino-4-deoxyprephenate dehydrogenase 
                EC                      (S)-8-oxocitronellyl enol synthase 
                EC                      8-oxogeranial reductase 
                EC                      2,4-dienoyl-CoA reductase [(3E)-enoyl-CoA-producing] 
                EC                      acrylate reductase 
                EC                      2-epi-5-epi-valiolone dehydrogenase 
        EC 1.3.2       [+]    With a cytochrome as acceptor 
        EC 1.3.3       [+]    With oxygen as acceptor 
        EC 1.3.4       [+]    With a disulfide as acceptor 
        EC 1.3.5       [+]    With a quinone or related compound as acceptor 
        EC 1.3.7       [+]    With an iron-sulfur protein as acceptor 
        EC 1.3.8       [+]    With a flavin as acceptor 
        EC 1.3.98       [+]    With other, known, physiological acceptors 
        EC 1.3.99       [+]    With unknown physiological acceptors 
    EC 1.4  [+]      
    EC 1.5  [+]      
    EC 1.6  [+]      
    EC 1.7  [+]      
    EC 1.8  [+]      
    EC 1.9  [+]      
    EC 1.10  [+]      
    EC 1.11  [+]      
    EC 1.12  [+]      
    EC 1.13  [+]      
    EC 1.14  [+]      
    EC 1.15  [+]      
    EC 1.16  [+]      
    EC 1.17  [+]      
    EC 1.18  [+]      
    EC 1.19  [+]      
    EC 1.20  [+]      
    EC 1.21  [+]      
    EC 1.22  [+]      
    EC 1.23  [+]      
    EC 1.97  [+]      
    EC 1.98  [+]      
    EC 1.99  [+]      
EC 2 [+]   
EC 3 [+]   
EC 4 [+]   
EC 5 [+]   
EC 6 [+]   
EC 7 [+]   

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