1. Oxidoreductases

   1.1  Acting on the CH-OH group of donors

   1.2  Acting on the aldehyde or oxo group of donors

   1.3  Acting on the CH-CH group of donors

   1.4  Acting on the CH-NH2 group of donors

   1.5  Acting on the CH-NH group of donors

   1.6  Acting on NADH or NADPH

   1.7  Acting on other nitrogenous compounds as donors

   1.8  Acting on a sulfur group of donors

   1.9  Acting on a heme group of donors

   1.10  Acting on diphenols and related substances as donors

   1.11  Acting on a peroxide as acceptor

   1.12  Acting on hydrogen as donor

   1.13  Acting on single donors with incorporation of molecular oxygen (oxygenases)

   1.14  Acting on paired donors, with incorporation or reduction of molecular oxygen

     1.14.11  With 2-oxoglutarate as one donor, and incorporation of one atom of oxygen into each donor

     1.14.12  With NADH or NADPH as one donor, and incorporation of two atoms of oxygen into the other donor

     1.14.13  With NADH or NADPH as one donor, and incorporation of one atom of oxygen into the other donor

     1.14.14  With reduced flavin or flavoprotein as one donor, and incorporation of one atom of oxygen into the other donor

     1.14.15  With reduced iron-sulfur protein as one donor, and incorporation of one atom of oxygen into the other donor

     1.14.16  With reduced pteridine as one donor, and incorporation of one atom of oxygen into the other donor

     1.14.17  With reduced ascorbate as one donor, and incorporation of one atom of oxygen into the other donor

     1.14.18  With another compound as one donor, and incorporation of one atom of oxygen into the other donor

     1.14.19  With oxidation of a pair of donors resulting in the reduction of O2 to two molecules of water

     1.14.20  With 2-oxoglutarate as one donor, and the other dehydrogenated

     1.14.99  Miscellaneous

       1.14.99.1  prostaglandin-endoperoxide synthase

       1.14.99.2  kynurenine 7,8-hydroxylase

       1.14.99.4  progesterone monooxygenase

       1.14.99.11  estradiol 6beta-monooxygenase

       1.14.99.12  androst-4-ene-3,17-dione monooxygenase

       1.14.99.14  progesterone 11alpha-monooxygenase

       1.14.99.15  4-methoxybenzoate monooxygenase (O-demethylating)

       1.14.99.20  phylloquinone monooxygenase (2,3-epoxidizing)

       1.14.99.21  Latia-luciferin monooxygenase (demethylating)

       1.14.99.22  ecdysone 20-monooxygenase

       1.14.99.23  3-hydroxybenzoate 2-monooxygenase

       1.14.99.24  steroid 9alpha-monooxygenase

       1.14.99.26  2-hydroxypyridine 5-monooxygenase

       1.14.99.29  deoxyhypusine monooxygenase

       1.14.99.34  monoprenyl isoflavone epoxidase

       1.14.99.35  thiophene-2-carbonyl-CoA monooxygenase

       1.14.99.38  cholesterol 25-monooxygenase

       1.14.99.39  ammonia monooxygenase

       1.14.99.44  diapolycopene oxygenase

       1.14.99.46  pyrimidine oxygenase

       1.14.99.47  (+)-larreatricin hydroxylase

       1.14.99.48  heme oxygenase (staphylobilin-producing)

       1.14.99.50  gamma-glutamyl hercynylcysteine S-oxide synthase

       1.14.99.52  L-cysteinyl-L-histidinylsulfoxide synthase

       1.14.99.53  lytic chitin monooxygenase

       1.14.99.54  lytic cellulose monooxygenase (C1-hydroxylating)

       1.14.99.55  lytic starch monooxygenase

       1.14.99.56  lytic cellulose monooxygenase (C4-dehydrogenating)

       1.14.99.57  heme oxygenase (mycobilin-producing)

       1.14.99.58  heme oxygenase (biliverdin-IX-beta and delta-forming)

       1.14.99.59  tryptamine 4-monooxygenase

       1.14.99.60  3-demethoxyubiquinol 3-hydroxylase

       1.14.99.61  cyclooctat-9-en-7-ol 5-monooxygenase

       1.14.99.62  cyclooctatin synthase

       1.14.99.63  beta-carotene 4-ketolase

       1.14.99.64  zeaxanthin 4-ketolase

       1.14.99.65  4-amino-L-phenylalanyl-[CmlP-peptidyl-carrier-protein] 3-hydroxylase

       1.14.99.66  [histone H3]-N6,N6-dimethyl-L-lysine4 FAD-dependent demethylase

       1.14.99.67  alpha-N-dichloroacetyl-p-aminophenylserinol N-oxygenase

       1.14.99.68  4-aminobenzoate N-oxygenase

       1.14.99.69  tRNA 2-(methylsulfanyl)-N6-isopentenyladenosine37 hydroxylase

   1.15  Acting on superoxide as acceptor

   1.16  Oxidizing metal ions

   1.17  Acting on CH or CH2 groups

   1.18  Acting on iron-sulfur proteins as donors

   1.19  Acting on reduced flavodoxin as donor

   1.20  Acting on phosphorus or arsenic in donors

   1.21  Catalysing the reaction X-H + Y-H = X-Y

   1.23  Reducing C-O-C group as acceptor

   1.97  Other oxidoreductases

 2. Transferases

 3. Hydrolases

 4. Lyases

 5. Isomerases

 6. Ligases

 7. Translocases