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Enzymes
  Enzyme classes:
  EC 1: Oxidoreductases
  EC 2: Transferases
  EC 3: Hydrolases
  EC 4: Lyases
  EC 5: Isomerases
    EC 5.1
    EC 5.2
    EC 5.3
      EC 5.3.1
      EC 5.3.2
      EC 5.3.3
      EC 5.3.4
      EC 5.3.99
    EC 5.4
    EC 5.5
    EC 5.99
  EC 6: Ligases
  General information:
  Catalytic mechanism
  Enzyme kinetics
  Inhibitors
  Enzymes in industry

EC 5.3 Intramolecular Oxidoreductases

EC 5.3 subclass definition

The EC 5.3 subclass contains Intramolecular Oxidoreductases - Isomerases that catalyze intramolecular coupled oxidation-reduction reaction. Further classification is based on type of substrates modified during the catalytic act.

Further classification of EC 5.3 subclass

This classification is based on type of substrates modified during the catalytic act.

EC 5.3.1 - Sugar isomerases, that reversible converts aldoses to ketoses in the sugar substances
EC 5.3.2 - Tautomerases, that catalyzed keto-enol equilibrium
EC 5.3.3 - Isomerases that transport carbon=carbon (C=C) double bonds
EC 5.3.4 - Isomerases that transport sulphur-sulphur (S-S) bonds
EC 5.3.99 - All other Intramolecular Oxidoreductases