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Enzymes
  Enzyme classes:
  EC 1: Oxidoreductases
  EC 2: Transferases
  EC 3: Hydrolases
  EC 4: Lyases
  EC 5: Isomerases
  EC 6: Ligases
    EC 6.1
    EC 6.2
    EC 6.3
      EC 6.3.1
      EC 6.3.2
      EC 6.3.3
        EC 6.3.3.1
        EC 6.3.3.2
        EC 6.3.3.3
        EC 6.3.3.4
      EC 6.3.4
      EC 6.3.5
    EC 6.4
    EC 6.5
    EC 6.6
  General information:
  Catalytic mechanism
  Enzyme kinetics
  Inhibitors
  Enzymes in industry

EC 6.3.3, Cyclo- Ligases that forming heterocyclic rings

EC 6.3.3 sub-subclass definition

EC 6.3.3 sub-subclass contains Cyclo-Ligases that forming heterocyclic rings. IUBMB Enzyme Nomenclature.

EC 6.3.3.1 - 2-(formamido)-N¹-(5-phosphoribosyl)acetamidine cyclo-ligase (ADP-forming)
EC 6.3.3.2 - 5-formyltetrahydrofolate cyclo-ligase (ADP-forming)
EC 6.3.3.3 - 7,8-diaminononanoate:carbon-dioxide cyclo-ligase (ADP-forming)
EC 6.3.3.4 - L-N²-(2-carboxyethyl)arginine cyclo-ligase (AMP-forming)