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EC Explorer
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EC Tree
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-NH
2
group of donors
1.5 Acting on the CH-NH group of donors
1.6 Acting on NADH or NADPH
1.6.1 With NAD
+
or NADP
+
as acceptor
1.6.2 With a heme protein as acceptor
1.6.3 With oxygen as acceptor
1.6.4 With a disulfide as acceptor (deleted sub-subclass)
1.6.5 With a quinone or similar compound as acceptor
1.6.6 With a nitrogenous group as acceptor
1.6.7 With an iron-sulfur protein as acceptor (deleted sub-subclass)
1.6.8 With a flavin as acceptor (deleted sub-subclass)
1.6.8.1 created 1981, deleted 2002
1.6.8.2 created 1982, deleted 2002
1.6.99 With unknown physiological acceptors
1.6.99.1 NADPH dehydrogenase
1.6.99.2 created 1961 as
EC 1.6.5.2
, transferred 1965 to
EC 1.6.99.2
, deleted 2005
1.6.99.3 NADH dehydrogenase
1.6.99.4 created 1965, deleted 1972
1.6.99.5 NADH dehydrogenase (quinone)
1.6.99.6 NADPH dehydrogenase (quinone)
1.6.99.7 created 1972, modified 1981 (
EC 1.6.99.10
created 1978, incorporated 1981), deleted 2003
1.6.99.8 created 1972, deleted 2002
1.6.99.9 created 1972, deleted 2002
1.6.99.10 created 1978, deleted 1981
1.6.99.11 created 1989, deleted 2002
1.6.99.12 created 1989, deleted 2002
1.6.99.13 created 1992, deleted 2002
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
1.15 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
1.22 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
5 Isomerases
6 Ligases
7 Translocases