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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 1.10
    EC 1.11
    EC 1.12
    EC 1.13
      EC 1.13.1
      EC 1.13.11
      EC 1.13.12
      EC 1.13.99
    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 1.13. Oxygenases that act on single donor with incorporation of molecular oxygen

EC 1.13 subclass definition

The EC 1.13 subclass contains oxygenases that incorporate oxygen from molecular oxygen O₂ into oxidized substrate. These enzymes act on a single donor. Further classification is based on number of incorporated oxygen atoms.

Further classification of EC 1.13 subclass

This classification is based number of incorporated oxygen atoms into substrate during catalysis.

EC 1.13.1 - Obsolete, reclassified now as EC 1.13.11
EC 1.13.11 - Two oxygen atoms are incorporated
EC 1.13.12 - One oxygen atom is incorporated (internal monooxygenases or internal mixed function oxidases)
EC 1.13.99 - Other non classified or preliminary classified single donor oxigenases