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EC Tree
1 Oxidoreductases
1.1 Acting on the CH-OH group of donors
1.1.1 With NAD
+
or NADP
+
as acceptor
1.1.2 With a cytochrome as acceptor
1.1.3 With oxygen as acceptor
1.1.4 With a disulfide as acceptor
1.1.5 With a quinone or similar compound as acceptor
1.1.7 With an iron-sulfur protein as acceptor
1.1.9 With a copper protein as acceptor
1.1.98 With other, known, physiological acceptors
1.1.98.1 alcohol dehydrogenase (azurin)
1.1.98.2 glucose-6-phosphate dehydrogenase (coenzyme-F
420
)
1.1.98.3 decaprenylphospho-β-
D
-ribofuranose 2-dehydrogenase
1.1.98.4 F
420
H
2
:quinone oxidoreductase
1.1.98.5 secondary-alcohol dehydrogenase (coenzyme-F
420
)
1.1.98.6 ribonucleoside-triphosphate reductase (formate)
1.1.98.7 serine-type anaerobic sulfatase-maturating enzyme
1.1.99 With unknown physiological acceptors
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-NH
2
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)
1.13.1. undefined
1.13.11 With incorporation of two atoms of oxygen
1.13.11.1 catechol 1,2-dioxygenase
1.13.11.2 catechol 2,3-dioxygenase
1.13.11.3 protocatechuate 3,4-dioxygenase
1.13.11.4 gentisate 1,2-dioxygenase
1.13.11.5 homogentisate 1,2-dioxygenase
1.13.11.6 3-hydroxyanthranilate 3,4-dioxygenase
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
1.13.11.9 2,5-dihydroxypyridine 5,6-dioxygenase
1.13.11.10 7,8-dihydroxykynurenate 8,8a-dioxygenase
1.13.11.11 tryptophan 2,3-dioxygenase
1.13.11.12 linoleate 13
S
-lipoxygenase
1.13.11.13 ascorbate 2,3-dioxygenase
1.13.11.14 2,3-dihydroxybenzoate 3,4-dioxygenase
1.13.11.15 3,4-dihydroxyphenylacetate 2,3-dioxygenase
1.13.11.16 3-carboxyethylcatechol 2,3-dioxygenase
1.13.11.17 indole 2,3-dioxygenase
1.13.11.18 persulfide dioxygenase
1.13.11.19 cysteamine dioxygenase
1.13.11.20 cysteine dioxygenase
1.13.11.21 created 1972, deleted 2001
1.13.11.22 caffeate 3,4-dioxygenase
1.13.11.23 2,3-dihydroxyindole 2,3-dioxygenase
1.13.11.24 quercetin 2,3-dioxygenase
1.13.11.25 3,4-dihydroxy-9,10-secoandrosta-1,3,5(10)-triene-9,17-dione 4,5-dioxygenase
1.13.11.26 peptide-tryptophan 2,3-dioxygenase
1.13.11.27 4-hydroxyphenylpyruvate dioxygenase
1.13.11.28 2,3-dihydroxybenzoate 2,3-dioxygenase
1.13.11.29 stizolobate synthase
1.13.11.30 stizolobinate synthase
1.13.11.31 arachidonate 12-lipoxygenase
1.13.11.32 2-nitropropane dioxygenase
1.13.11.33 arachidonate 15-lipoxygenase
1.13.11.34 arachidonate 5-lipoxygenase
1.13.11.35 pyrogallol 1,2-oxygenase
1.13.11.36 chloridazon-catechol dioxygenase
1.13.11.37 hydroxyquinol 1,2-dioxygenase
1.13.11.38 1-hydroxy-2-naphthoate 1,2-dioxygenase
1.13.11.39 biphenyl-2,3-diol 1,2-dioxygenase
1.13.11.40 arachidonate 8-lipoxygenase
1.13.11.41 2,4′-dihydroxyacetophenone dioxygenase
1.13.11.42 indoleamine-pyrrole 2,3-dioxygenase
1.13.11.43 lignostilbene αβ-dioxygenase
1.13.11.44 linoleate diol synthase
1.13.11.45 linoleate 11-lipoxygenase
1.13.11.46 4-hydroxymandelate synthase
1.13.11.47 3-hydroxy-4-oxoquinoline 2,4-dioxygenase
1.13.11.48 3-hydroxy-2-methylquinolin-4-one 2,4-dioxygenase
1.13.11.49 chlorite O
2
-lyase
1.13.11.50 acetylacetone-cleaving enzyme
1.13.11.51 9-
cis
-epoxycarotenoid dioxygenase
1.13.11.52 indoleamine 2,3-dioxygenase
1.13.11.53 acireductone dioxygenase (Ni
2+
-requiring)
1.13.11.54 acireductone dioxygenase [iron(II)-requiring]
1.13.11.55 sulfur oxygenase/reductase
1.13.11.56 1,2-dihydroxynaphthalene dioxygenase
1.13.11.57 gallate dioxygenase
1.13.11.58 linoleate 9
S
-lipoxygenase
1.13.11.59 torulene dioxygenase
1.13.11.60 linoleate 8
R
-lipoxygenase
1.13.11.61 linolenate 9
R
-lipoxygenase
1.13.11.62 linoleate 10
R
-lipoxygenase
1.13.11.63 β-carotene 15,15′-dioxygenase
1.13.11.64 5-nitrosalicylate dioxygenase
1.13.11.65 carotenoid isomerooxygenase
1.13.11.66 hydroquinone 1,2-dioxygenase
1.13.11.67 8′-apo-β-carotenoid 14′,13′-cleaving dioxygenase
1.13.11.68 9-
cis
-β-carotene 9′,10′-cleaving dioxygenase
1.13.11.69 carlactone synthase
1.13.11.70
all
-
trans
-10′-apo-β-carotenal 13,14-cleaving dioxygenase
1.13.11.71 carotenoid-9′,10′-cleaving dioxygenase
1.13.11.72 2-hydroxyethylphosphonate dioxygenase
1.13.11.73 methylphosphonate synthase
1.13.11.74 2-aminophenol 1,6-dioxygenase
1.13.11.75
all
-
trans
-8′-apo-β-carotenal 15,15′-oxygenase
1.13.11.76 2-amino-5-chlorophenol 1,6-dioxygenase
1.13.11.77 oleate 10
S
-lipoxygenase
1.13.11.78 2-amino-1-hydroxyethylphosphonate dioxygenase (glycine-forming)
1.13.11.79 aerobic 5,6-dimethylbenzimidazole synthase
1.13.11.80 (3,5-dihydroxyphenyl)acetyl-CoA 1,2-dioxygenase
1.13.11.81 7,8-dihydroneopterin oxygenase
1.13.11.82 8′-apo-carotenoid 13,14-cleaving dioxygenase
1.13.11.83 4-hydroxy-3-prenylphenylpyruvate oxygenase
1.13.11.84 crocetin dialdehyde synthase
1.13.11.85 exo-cleaving rubber dioxygenase
1.13.11.86 5-aminosalicylate 1,2-dioxygenase
1.13.11.87 endo-cleaving rubber dioxygenase
1.13.11.88 isoeugenol monooxygenase
1.13.11.89 (hydroxymethyl)phosphonate dioxygenase
1.13.11.90 [1-hydroxy-2-(trimethylamino)ethyl]phosphonate dioxygenase (glycine-betaine-forming)
1.13.11.91 3-mercaptopropionate dioxygenase
1.13.11.92 fatty acid α-dioxygenase
1.13.11.93 2-oxoadipate dioxygenase/decarboxylase
1.13.12 With incorporation of one atom of oxygen (internal monooxygenases or internal mixed-function oxidases)
1.13.99 Miscellaneous
1.14 Acting on paired donors, with incorporation or reduction of molecular oxygen
1.15 Acting on superoxide as acceptor
1.16 Oxidizing metal ions
1.17 Acting on CH or CH
2
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
1.21.1 With NAD
+
or NADP
+
as acceptor
1.21.3 With oxygen as acceptor
1.21.4 With a disulfide as acceptor
1.21.98 With other, known, physiological acceptors
1.21.99 With unknown physiological acceptors
1.22 Acting on halogen in donors
1.23 Reducing C-O-C group as acceptor
1.97 Other oxidoreductases
1.98 Enzymes using H
2
as reductant (deleted subclass)
1.99 Other enzymes using O
2
as oxidant (deleted subclass)
2 Transferases
3 Hydrolases
4 Lyases
4.1 Carbon-carbon lyases
4.2 Carbon-oxygen lyases
4.3 Carbon-nitrogen lyases
4.4 Carbon-sulfur lyases
4.5 Carbon-halide lyases
4.6 Phosphorus-oxygen lyases
4.7 carbon-phosphorus lyases
4.8 Nitrogen-oxygen lyases
4.98 ATP-independent chelatases
4.99 Other lyases
5 Isomerases
5.1 Racemases and epimerases
5.2
cis-trans-
Isomerases
5.3 Intramolecular oxidoreductases
5.4 Intramolecular transferases
5.5 Intramolecular lyases
5.6 Isomerases altering macromolecular conformation
5.99 Other isomerases
6 Ligases
7 Translocases