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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
1.9 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
1.17.1 With NAD
+
or NADP
+
as acceptor
1.17.2 With a cytochrome as acceptor
1.17.3 With oxygen as acceptor
1.17.4 With a disulfide as acceptor
1.17.5 With a quinone or similar compound as acceptor
1.17.7 With an iron-sulfur protein as acceptor
1.17.8 With a flavin as acceptor
1.17.9 With a copper protein as acceptor
1.17.98 With other, known, physiological acceptors
1.17.99 With unknown physiological acceptors
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
1.97.1 Sole sub-subclass for oxidoreductases that do not belong in the other subclasses
1.98 Enzymes using H
2
as reductant (deleted subclass)
1.99 Other enzymes using O
2
as oxidant (deleted subclass)
2 Transferases
2.1 Transferring one-carbon groups
2.2 Transferring aldehyde or ketonic groups
2.3 Acyltransferases
2.4 Glycosyltransferases
2.5 Transferring alkyl or aryl groups, other than methyl groups
2.6 Transferring nitrogenous groups
2.7 Transferring phosphorus-containing groups
2.8 Transferring sulfur-containing groups
2.9 Transferring selenium-containing groups
2.10 Transferring molybdenum- or tungsten-containing groups
2.10.1 Molybdenumtransferases or tungstentransferases with sulfide groups as acceptors
3 Hydrolases
4 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