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1 Oxidoreductases
(9631 organisms)
1.1 Acting on the CH-OH group of donors
(6982 organisms)
1.2 Acting on the aldehyde or oxo group of donors
(1227 organisms)
1.3 Acting on the CH-CH group of donors
(1050 organisms)
1.4 Acting on the CH-NH
2
group of donors
(1047 organisms)
1.5 Acting on the CH-NH group of donors
(745 organisms)
1.6 Acting on NADH or NADPH
(328 organisms)
1.7 Acting on other nitrogenous compounds as donors
(567 organisms)
1.8 Acting on a sulfur group of donors
(765 organisms)
1.9 Acting on a heme group of donors
(185 organisms)
1.10 Acting on diphenols and related substances as donors
(444 organisms)
1.11 Acting on a peroxide as acceptor
(825 organisms)
1.12 Acting on hydrogen as donor
(259 organisms)
1.13 Acting on single donors with incorporation of molecular oxygen (oxygenases)
(861 organisms)
1.13.1. undefined
1.13.11 With incorporation of two atoms of oxygen
(762 organisms)
1.13.11.1 catechol 1,2-dioxygenase
(98 organisms)
1.13.11.2 catechol 2,3-dioxygenase
(102 organisms)
1.13.11.3 protocatechuate 3,4-dioxygenase
(47 organisms)
1.13.11.4 gentisate 1,2-dioxygenase
(42 organisms)
1.13.11.5 homogentisate 1,2-dioxygenase
(42 organisms)
1.13.11.6 3-hydroxyanthranilate 3,4-dioxygenase
(15 organisms)
1.13.11.7 created 1965 as
EC 1.13.1.7
, transferred 1972 to
EC 1.13.11.7
, deleted 1980
1.13.11.8 protocatechuate 4,5-dioxygenase
(14 organisms)
1.13.11.9 2,5-dihydroxypyridine 5,6-dioxygenase
(7 organisms)
1.13.11.10 7,8-dihydroxykynurenate 8,8a-dioxygenase
(1 organism)
1.13.11.11 tryptophan 2,3-dioxygenase
(15 organisms)
1.13.11.12 linoleate 13
S
-lipoxygenase
(30 organisms)
1.13.11.13 ascorbate 2,3-dioxygenase
1.13.11.14 2,3-dihydroxybenzoate 3,4-dioxygenase
(6 organisms)
1.13.11.15 3,4-dihydroxyphenylacetate 2,3-dioxygenase
(26 organisms)
1.13.11.16 3-carboxyethylcatechol 2,3-dioxygenase
(4 organisms)
1.13.11.17 indole 2,3-dioxygenase
(5 organisms)
1.13.11.18 persulfide dioxygenase
(20 organisms)
1.13.11.19 cysteamine dioxygenase
(14 organisms)
1.13.11.20 cysteine dioxygenase
(23 organisms)
1.13.11.21 created 1972, deleted 2001
1.13.11.22 caffeate 3,4-dioxygenase
(1 organism)
1.13.11.23 2,3-dihydroxyindole 2,3-dioxygenase
(1 organism)
1.13.11.24 quercetin 2,3-dioxygenase
(18 organisms)
1.13.11.25 3,4-dihydroxy-9,10-secoandrosta-1,3,5(10)-triene-9,17-dione 4,5-dioxygenase
(2 organisms)
1.13.11.26 peptide-tryptophan 2,3-dioxygenase
(4 organisms)
1.13.11.27 4-hydroxyphenylpyruvate dioxygenase
(40 organisms)
1.13.11.28 2,3-dihydroxybenzoate 2,3-dioxygenase
(1 organism)
1.13.11.29 stizolobate synthase
(1 organism)
1.13.11.30 stizolobinate synthase
(1 organism)
1.13.11.31 arachidonate 12-lipoxygenase
(28 organisms)
1.13.11.32 2-nitropropane dioxygenase
(3 organisms)
1.13.11.33 arachidonate 15-lipoxygenase
(32 organisms)
1.13.11.34 arachidonate 5-lipoxygenase
(16 organisms)
1.13.11.35 pyrogallol 1,2-oxygenase
(1 organism)
1.13.11.36 chloridazon-catechol dioxygenase
(2 organisms)
1.13.11.37 hydroxyquinol 1,2-dioxygenase
(27 organisms)
1.13.11.38 1-hydroxy-2-naphthoate 1,2-dioxygenase
(9 organisms)
1.13.11.39 biphenyl-2,3-diol 1,2-dioxygenase
(55 organisms)
1.13.11.40 arachidonate 8-lipoxygenase
(7 organisms)
1.13.11.41 2,4′-dihydroxyacetophenone dioxygenase
(4 organisms)
1.13.11.42 indoleamine-pyrrole 2,3-dioxygenase
1.13.11.43 lignostilbene αβ-dioxygenase
(3 organisms)
1.13.11.44 linoleate diol synthase
1.13.11.45 linoleate 11-lipoxygenase
(7 organisms)
1.13.11.46 4-hydroxymandelate synthase
(3 organisms)
1.13.11.47 3-hydroxy-4-oxoquinoline 2,4-dioxygenase
(6 organisms)
1.13.11.48 3-hydroxy-2-methylquinolin-4-one 2,4-dioxygenase
(8 organisms)
1.13.11.49 chlorite O
2
-lyase
(25 organisms)
1.13.11.50 acetylacetone-cleaving enzyme
(1 organism)
1.13.11.51 9-
cis
-epoxycarotenoid dioxygenase
(50 organisms)
1.13.11.52 indoleamine 2,3-dioxygenase
(50 organisms)
1.13.11.53 acireductone dioxygenase (Ni
2+
-requiring)
(9 organisms)
1.13.11.54 acireductone dioxygenase [iron(II)-requiring]
(10 organisms)
1.13.11.55 sulfur oxygenase/reductase
(23 organisms)
1.13.11.56 1,2-dihydroxynaphthalene dioxygenase
(5 organisms)
1.13.11.57 gallate dioxygenase
(6 organisms)
1.13.11.58 linoleate 9
S
-lipoxygenase
(22 organisms)
1.13.11.59 torulene dioxygenase
(2 organisms)
1.13.11.60 linoleate 8
R
-lipoxygenase
(12 organisms)
1.13.11.61 linolenate 9
R
-lipoxygenase
(5 organisms)
1.13.11.62 linoleate 10
R
-lipoxygenase
(4 organisms)
1.13.11.63 β-carotene 15,15′-dioxygenase
(28 organisms)
1.13.11.64 5-nitrosalicylate dioxygenase
(1 organism)
1.13.11.65 carotenoid isomerooxygenase
(6 organisms)
1.13.11.66 hydroquinone 1,2-dioxygenase
(13 organisms)
1.13.11.67 8′-apo-β-carotenoid 14′,13′-cleaving dioxygenase
(3 organisms)
1.13.11.68 9-
cis
-β-carotene 9′,10′-cleaving dioxygenase
(10 organisms)
1.13.11.69 carlactone synthase
(5 organisms)
1.13.11.70
all
-
trans
-10′-apo-β-carotenal 13,14-cleaving dioxygenase
(8 organisms)
1.13.11.71 carotenoid-9′,10′-cleaving dioxygenase
(13 organisms)
1.13.11.72 2-hydroxyethylphosphonate dioxygenase
(2 organisms)
1.13.11.73 methylphosphonate synthase
(2 organisms)
1.13.11.74 2-aminophenol 1,6-dioxygenase
(6 organisms)
1.13.11.75
all
-
trans
-8′-apo-β-carotenal 15,15′-oxygenase
(5 organisms)
1.13.11.76 2-amino-5-chlorophenol 1,6-dioxygenase
(1 organism)
1.13.11.77 oleate 10
S
-lipoxygenase
(5 organisms)
1.13.11.78 2-amino-1-hydroxyethylphosphonate dioxygenase (glycine-forming)
(4 organisms)
1.13.11.79 aerobic 5,6-dimethylbenzimidazole synthase
(6 organisms)
1.13.11.80 (3,5-dihydroxyphenyl)acetyl-CoA 1,2-dioxygenase
(3 organisms)
1.13.11.81 7,8-dihydroneopterin oxygenase
(3 organisms)
1.13.11.82 8′-apo-carotenoid 13,14-cleaving dioxygenase
1.13.11.83 4-hydroxy-3-prenylphenylpyruvate oxygenase
(2 organisms)
1.13.11.84 crocetin dialdehyde synthase
(4 organisms)
1.13.11.85 exo-cleaving rubber dioxygenase
(8 organisms)
1.13.11.86 5-aminosalicylate 1,2-dioxygenase
(2 organisms)
1.13.11.87 endo-cleaving rubber dioxygenase
(12 organisms)
1.13.11.88 isoeugenol monooxygenase
(5 organisms)
1.13.11.89 (hydroxymethyl)phosphonate dioxygenase
(2 organisms)
1.13.11.90 [1-hydroxy-2-(trimethylamino)ethyl]phosphonate dioxygenase (glycine-betaine-forming)
(1 organism)
1.13.12 With incorporation of one atom of oxygen (internal monooxygenases or internal mixed-function oxidases)
(107 organisms)
1.13.99 Miscellaneous
(20 organisms)
1.14 Acting on paired donors, with incorporation or reduction of molecular oxygen
(2405 organisms)
1.15 Acting on superoxide as acceptor
(381 organisms)
1.16 Oxidizing metal ions
(233 organisms)
1.17 Acting on CH or CH
2
groups
(403 organisms)
1.18 Acting on iron-sulfur proteins as donors
(199 organisms)
1.19 Acting on reduced flavodoxin as donor
(21 organisms)
1.20 Acting on phosphorus or arsenic in donors
(106 organisms)
1.21 Catalysing the reaction X-H + Y-H = X-Y
(151 organisms)
1.22 Acting on halogen in donors
1.22.1 With NAD
+
or NADP
+
as acceptor
1.23 Reducing C-O-C group as acceptor
(32 organisms)
1.97 Other oxidoreductases
(134 organisms)
1.98 Enzymes using H
2
as reductant (deleted subclass)
1.99 Other enzymes using O
2
as oxidant (deleted subclass)
2 Transferases
(7171 organisms)
3 Hydrolases
(11482 organisms)
4 Lyases
(5139 organisms)
5 Isomerases
(2099 organisms)
6 Ligases
(1565 organisms)
7 Translocases
(1096 organisms)