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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 1.14
    EC 1.15
    EC 1.16
    EC 1.17
    EC 1.18
    EC 1.19
    EC 1.20
    EC 1.21
      EC 1.21.3
        EC 1.21.3.1
        EC 1.21.3.2
        EC 1.21.3.3
        EC 1.21.3.4
        EC 1.21.3.5
        EC 1.21.3.6
      EC 1.21.4
      EC 1.21.99
    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 1.21.3 Oxidoreductase acting on X- H and Y- H to form an X- Y bond with oxygen as acceptor

EC 1.21.3 sub-subclass definition

EC 1.21.3 sub-subclass contains Oxidoreductase acting on X-H and Y-H to form an X-Y bond with oxygen as acceptor. IUBMB Enzyme Nomenclature.

EC 1.21.3.1 - N-[(5S)-5-amino-5-carboxypentanoyl]-L-cysteinyl-D-valine:oxygen oxidoreductase (cyclizing)
EC 1.21.3.2 - columbamine:oxygen oxidoreductase (cyclizing)
EC 1.21.3.3 - (S)-reticuline:oxygen oxidoreductase (methylene-bridge-forming)
EC 1.21.3.4 - sulochrin:oxygen oxidoreductase (cyclizing, (+)-specific)
EC 1.21.3.5 - sulochrin:oxygen oxidoreductase (cyclizing, (-)-specific)
EC 1.21.3.6 - 2',4,4',6'-tetrahydroxychalcone:oxygen oxidoreductase