List of EC numbers

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This article is a list of enzymes, sorted by their EC numbers as determined by the International Union of Biochemistry and Molecular Biology.

See also:

EC 1. Oxidoreductases[edit]

  • EC 1.1 Acting on the CH-OH group of donors
  • EC 1.2 Acting on the aldehyde or oxo group of donors
  • EC 1.3 Acting on the CH-CH group of donors
  • EC 1.4 Acting on the CH-NH2 group of donors
  • EC 1.5 Acting on the CH-NH group of donors
  • EC 1.6 Acting on NADH or NADPH
  • EC 1.7 Acting on other nitrogenous compounds as donors
  • EC 1.8 Acting on a sulfur group of donors
  • EC 1.9 Acting on a heme group of donors
  • EC 1.10 Acting on diphenols and related substances as donors
  • EC 1.11 Acting on a peroxide as acceptor
  • EC 1.12 Acting on hydrogen as donor
  • EC 1.13 Acting on single donors with incorporation of molecular oxygen (oxygenases)
  • EC 1.14 Acting on paired donors, with incorporation or reduction of molecular oxygen
  • EC 1.15 Acting on superoxide as acceptor
  • EC 1.16 Oxidizing metal ions
  • EC 1.17 Acting on CH or CH2 groups
  • EC 1.18 Acting on iron-sulfur proteins as donors
  • EC 1.19 Acting on reduced flavodoxin as donor
  • EC 1.20 Acting on phosphorus or arsenic in donors
  • EC 1.21 Acting on X-H and Y-H to form an X-Y bond
  • EC 1.97 Other oxidoreductases
  • EC 1.98 Enzymes using H2 as reductant
  • EC 1.99 Other enzymes using O2 as oxidant

EC 2. Transferases[edit]

  • EC 2.1 Transferring One-Carbon Groups
  • EC 2.2 Transferring Aldehyde or Ketonic Groups
  • EC 2.3 Acyltransferases
  • EC 2.4 Glycosyltransferases
  • EC 2.5 Transferring Alkyl or Aryl Groups, Other than Methyl Groups
  • EC 2.6 Transferring Nitrogenous Groups
  • EC 2.7 Transferring Phosphorus-Containing Groups
  • EC 2.8 Transferring Sulfur-Containing Groups
  • EC 2.9 Transferring Selenium-Containing Groups

EC 3. Hydrolases[edit]

  • EC 3.1 Acting on Ester Bonds
  • EC 3.2 Glycosylases
  • EC 3.3 Acting on Ether Bonds
  • EC 3.4 Acting on peptide bonds (Peptidases)
  • EC 3.5 Acting on Carbon-Nitrogen Bonds, other than Peptide Bonds
  • EC 3.6 Acting on Acid Anhydrides
  • EC 3.7 Acting on Carbon-Carbon Bonds
  • EC 3.8 Acting on Halide Bonds
  • EC 3.9 Acting on Phosphorus-Nitrogen Bonds
  • EC 3.10 Acting on Sulfur-Nitrogen Bonds
  • EC 3.11 Acting on Carbon-Phosphorus Bonds
  • EC 3.12 Acting on Sulfur-Sulfur Bonds
  • EC 3.13 Acting on Carbon-Sulfur Bonds

EC 4. Lyases[edit]

  • EC 4.1 Carbon-Carbon Lyases
  • EC 4.2 Carbon-Oxygen Lyases
  • EC 4.3 Carbon-Nitrogen Lyases
  • EC 4.4 Carbon-Sulfur Lyases
  • EC 4.5 Carbon-Halide Lyases
  • EC 4.6 Phosphorus-Oxygen Lyases
  • EC 4.99 Other Lyases

EC 5. Isomerases[edit]

  • EC 5.1 Racemases and Epimerases
  • EC 5.2 cis-trans-Isomerases
  • EC 5.3 Intramolecular Oxidoreductases
  • EC 5.4 Intramolecular Transferases
  • EC 5.5 Intramolecular Lyases
  • EC 5.99 Other Isomerases

EC 6. Ligases[edit]

  • EC 6.1 Forming Carbon-Oxygen Bonds
  • EC 6.2 Forming Carbon-Sulfur Bonds
  • EC 6.3 Forming Carbon-Nitrogen Bonds
  • EC 6.4 Forming Carbon-Carbon Bonds
  • EC 6.5 Forming Phosphoric Ester Bonds
  • EC 6.6 Forming Nitrogen—Metal Bonds