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Enzymes
  Enzyme classes:
  EC 1: Oxidoreductases
    EC 1.1
    EC 1.2
    EC 1.3
    EC 1.4
    EC 1.5
    EC 1.6
    EC 1.7
    EC 1.8
    EC 1.9
      EC 1.9.3
      EC 1.9.6
      EC 1.9.99
    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 1.9. Oxidoreductases that act on substrates that contain a heme group

EC 1.9 subclass definition

The EC 1.9 subclass contains dehydrogenases that act on heme group of donor. Cytochrome oxidases and nitrate reductases are belongs to this subclass. Further classification is based on acceptors involved in catalysis.

Further classification of EC 1.9 subclass

This classification is based on acceptors involved in catalysis.

EC 1.9.3 - Acceptor is oxygen
EC 1.9.6 - Acceptor is nitrogenous group
EC 1.9.99 - All other acceptors, also reserved for non classified enzymes