EC Explorer

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-NH₂ 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)

1.6.1 With NAD⁺ or NADP⁺ as acceptor (46 organisms)

1.6.2 With a heme protein as acceptor (148 organisms)

1.6.3 With oxygen as acceptor (86 organisms)

1.6.4 With a disulfide as acceptor (deleted sub-subclass)

1.6.5 With a quinone or similar compound as acceptor (118 organisms)

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)

1.6.99 With unknown physiological acceptors (21 organisms)

1.6.99.1 NADPH dehydrogenase (21 organisms)

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 (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)

1.14 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 CH₂ 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

1.23 Reducing C-O-C group as acceptor (32 organisms)

1.97 Other oxidoreductases (134 organisms)

1.98 Enzymes using H₂ as reductant (deleted subclass)

1.99 Other enzymes using O₂ as oxidant (deleted subclass)

1.99.1 Hydroxylases (now covered by EC 1.14)

1.99.2 Oxygenases (now covered by EC 1.13)

2 Transferases (7171 organisms)

3 Hydrolases (11482 organisms)

4 Lyases (5139 organisms)

5 Isomerases (2099 organisms)

6 Ligases (1565 organisms)

7 Translocases (1096 organisms)