Enzyme Nomenclature. Recommendations
EC 6.3.1 AcidAmmonia (or Amine) Ligases (Amide Synthases)
EC 6.3.2 AcidAmino-Acid Ligases (Peptide Synthases)
EC 6.3.3 Cyclo-Ligases
EC 6.3.4 Other Carbon-Nitrogen Ligases
EC 6.3.5 CarbonNitrogen Ligases with Glutamine as Amido-N-Donor