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1 Oxidoreductases
(9634 organisms)
1.1 Acting on the CH-OH group of donors
(6909 organisms)
1.2 Acting on the aldehyde or oxo group of donors
(1222 organisms)
1.3 Acting on the CH-CH group of donors
(1032 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
(359 organisms)
1.7 Acting on other nitrogenous compounds as donors
(568 organisms)
1.8 Acting on a sulfur group of donors
(747 organisms)
1.9 Acting on a heme group of donors
(339 organisms)
1.10 Acting on diphenols and related substances as donors
(444 organisms)
1.11 Acting on a peroxide as acceptor
(798 organisms)
1.12 Acting on hydrogen as donor
(258 organisms)
1.13 Acting on single donors with incorporation of molecular oxygen (oxygenases)
(861 organisms)
1.14 Acting on paired donors, with incorporation or reduction of molecular oxygen
(2371 organisms)
1.15 Acting on superoxide as acceptor
(381 organisms)
1.15.1 Acting on superoxide as acceptor (only sub-subclass identified to date)
(381 organisms)
1.16 Oxidizing metal ions
(235 organisms)
1.17 Acting on CH or CH
2
groups
(401 organisms)
1.18 Acting on iron-sulfur proteins as donors
(198 organisms)
1.19 Acting on reduced flavodoxin as donor
(21 organisms)
1.20 Acting on phosphorus or arsenic in donors
(105 organisms)
1.21 Catalysing the reaction X-H + Y-H = X-Y
(149 organisms)
1.21.1. undefined
(18 organisms)
1.21.3 With oxygen as acceptor
(43 organisms)
1.21.4 With a disulfide as acceptor
(16 organisms)
1.21.98 With other, known, physiological acceptors
(26 organisms)
1.21.99 With unknown physiological acceptors
(52 organisms)
1.22 Acting on halogen in donors
1.23 Reducing C-O-C group as acceptor
(32 organisms)
1.97 Other oxidoreductases
(134 organisms)
1.97.1 Sole sub-subclass for oxidoreductases that do not belong in the other subclasses
(134 organisms)
1.97.1.1 chlorate reductase
(78 organisms)
1.97.1.2 pyrogallol hydroxytransferase
(3 organisms)
1.97.1.3 sulfur reductase
1.97.1.4 [formate-
C
-acetyltransferase]-activating enzyme
(9 organisms)
1.97.1.5 created 2000 deleted 2001
1.97.1.6 created 2000 deleted 2001
1.97.1.7 created 2000, deleted 2001
1.97.1.8 tetrachloroethene reductive dehalogenase
1.97.1.9 selenate reductase
(28 organisms)
1.97.1.10 thyroxine 5′-deiodinase
1.97.1.11 thyroxine 5-deiodinase
1.97.1.12 photosystem I
(20 organisms)
1.98 Enzymes using H
2
as reductant (deleted subclass)
1.99 Other enzymes using O
2
as oxidant (deleted subclass)
2 Transferases
(6601 organisms)
3 Hydrolases
(9513 organisms)
4 Lyases
(5106 organisms)
5 Isomerases
(2066 organisms)
6 Ligases
(1540 organisms)
7 Translocases
(833 organisms)