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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
1.1.99 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
1.8.1 With NAD
+
or NADP
+
as acceptor
1.8.2 With a cytochrome as acceptor
1.8.3 With oxygen as acceptor
1.8.4 With a disulfide as acceptor
1.8.4.1 glutathione—homocystine transhydrogenase
1.8.4.2 protein-disulfide reductase (glutathione)
1.8.4.3 glutathione—CoA-glutathione transhydrogenase
1.8.4.4 glutathione—cystine transhydrogenase
1.8.4.5 methionine-
S
-oxide reductase
1.8.4.6 protein-methionine-
S
-oxide reductase
1.8.4.7 enzyme-thiol transhydrogenase (glutathione-disulfide)
1.8.4.8 phosphoadenylyl-sulfate reductase (thioredoxin)
1.8.4.9 adenylyl-sulfate reductase (glutathione)
1.8.4.10 adenylyl-sulfate reductase (thioredoxin)
1.8.4.11 peptide-methionine (
S
)-
S
-oxide reductase
1.8.4.12 peptide-methionine (
R
)-
S
-oxide reductase
1.8.4.13
L
-methionine (
S
)-
S
-oxide reductase
1.8.4.14
L
-methionine (
R
)-
S
-oxide reductase
1.8.4.15 protein dithiol oxidoreductase (disulfide-forming)
1.8.4.16 thioredoxin:protein disulfide reductase
1.8.5 With a quinone or similar compound as acceptor
1.8.6 With a nitrogenous group as acceptor (deleted sub-subclass)
1.8.7 With an iron-sulfur protein as acceptor
1.8.98 With other, known, physiological acceptors
1.8.99 With unknown physiological acceptors
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
1.13.12 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
3.1 Acting on ester bonds
3.2 Glycosylases
3.3 Acting on ether bonds
3.4 Acting on peptide bonds (peptidases)
3.5 Acting on carbon-nitrogen bonds, other than peptide bonds
3.6 Acting on acid anhydrides
3.7 Acting on carbon-carbon bonds
3.8 Acting on halide bonds
3.9 Acting on phosphorus-nitrogen bonds
3.10 Acting on sulfur-nitrogen bonds
3.11 Acting on carbon-phosphorus bonds
3.12 Acting on sulfur-sulfur bonds
3.13 Acting on carbon-sulfur bonds
4 Lyases
5 Isomerases
6 Ligases
6.1 Forming carbon-oxygen bonds
6.2 Forming carbon-sulfur bonds
6.3 Forming carbon-nitrogen bonds
6.4 Forming carbon-carbon bonds
6.5 Forming phosphoric-ester bonds
6.6 Forming nitrogenmetal bonds
6.7 Forming nitrogen-nitrogen bonds
7 Translocases