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

       1.14.15.1  camphor 5-monooxygenase

       1.14.15.3  alkane 1-monooxygenase

       1.14.15.4  steroid 11beta-monooxygenase

       1.14.15.5  corticosterone 18-monooxygenase

       1.14.15.6  cholesterol monooxygenase (side-chain-cleaving)

       1.14.15.7  choline monooxygenase

       1.14.15.8  steroid 15beta-monooxygenase

       1.14.15.9  spheroidene monooxygenase

       1.14.15.10  (+)-camphor 6-endo-hydroxylase

       1.14.15.11  pentalenic acid synthase

       1.14.15.13  pulcherriminic acid synthase

       1.14.15.14  methyl-branched lipid omega-hydroxylase

       1.14.15.15  cholestanetriol 26-monooxygenase

       1.14.15.16  vitamin D3 24-hydroxylase

       1.14.15.17  pheophorbide a oxygenase

       1.14.15.18  calcidiol 1-monooxygenase

       1.14.15.19  C-19 steroid 1alpha-hydroxylase

       1.14.15.20  heme oxygenase (biliverdin-producing, ferredoxin)

       1.14.15.21  zeaxanthin epoxidase

       1.14.15.22  vitamin D 1,25-hydroxylase

       1.14.15.23  chloroacetanilide N-alkylformylase

       1.14.15.24  beta-carotene 3-hydroxylase

       1.14.15.25  p-cymene methyl-monooxygenase

       1.14.15.26  toluene methyl-monooxygenase

       1.14.15.27  beta-dihydromenaquinone-9 omega-hydroxylase

       1.14.15.28  cholest-4-en-3-one 26-monooxygenase [(25R)-3-oxocholest-4-en-26-oate forming]

       1.14.15.29  cholest-4-en-3-one 26-monooxygenase [(25S)-3-oxocholest-4-en-26-oate forming]

       1.14.15.30  3-ketosteroid 9alpha-monooxygenase

       1.14.15.31  2-hydroxy-5-methyl-1-naphthoate 7-hydroxylase

       1.14.15.32  pentalenene oxygenase

       1.14.15.33  pikromycin synthase

       1.14.15.34  20-oxo-5-O-mycaminosyltylactone 23-monooxygenase

       1.14.15.35  6-deoxyerythronolide B hydroxylase

       1.14.15.36  sterol 14alpha-demethylase (ferredoxin)

       1.14.15.37  luteothin monooxygenase

       1.14.15.38  N,N-dimethyl phenylurea N-demethylase

       1.14.15.39  epi-isozizaene 5-monooxygenase

     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

   1.15  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