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Enzymes
  Enzyme classes:
  EC 1: Oxidoreductases
    EC 1.1
    EC 1.2
    EC 1.3
      EC 1.3.1
      EC 1.3.2
      EC 1.3.3
      EC 1.3.5
      EC 1.3.7
      EC 1.3.99
    EC 1.4
    EC 1.5
    EC 1.6
    EC 1.7
    EC 1.8
    EC 1.9
    EC 1.10
    EC 1.11
    EC 1.12
    EC 1.13
    EC 1.14
    EC 1.15
    EC 1.16
    EC 1.17
    EC 1.18
    EC 1.19
    EC 1.20
    EC 1.21
    EC 1.97
    EC 1.98
    EC 1.99
  EC 2: Transferases
  EC 3: Hydrolases
  EC 4: Lyases
  EC 5: Isomerases
  EC 6: Ligases
  General information:
  Catalytic mechanism
  Enzyme kinetics
  Inhibitors
  Enzymes in industry

EC 1.3. Dehydrogenases that act on CH- CH group of donors

EC 1.3 subclass definition

The EC 1.3 subclass contains dehydrogenases that act on donors with CH-CH group. This subclass contains all enzymes which directly dehydrogenate CH-CH single bond to double carbon=carbon bond. Further classification is based on acceptors involved in catalysis.

Further classification of EC 1.3. subclass

This classification is based on acceptors involved in catalysis.

EC 1.3.1 - Acceptors are NAD⁺ or NADP⁺
EC 1.3.2 - Acceptor is cytochrome
EC 1.3.3 - Acceptor is oxygen
EC 1.3.5 - Acceptor is quinone or similar compound
EC 1.3.7 - Acceptor is iron-sulfur protein
EC 1.3.99 - All other acceptors, also reserved for non classified enzymes