Enzyme EC numbers

EC (Enzyme Commission) numbers assigned by IUPAC-IUBMB

6. Ligases;
  6.3  Forming carbon-nitrogen bonds;
    6.3.2  Acid-D-amino-acid ligases (peptide synthases)
      6.3.2.-  cyanophycin synthase (L-arginine-adding); CphA (ambiguous); CphA1 (ambiguous); CphA2 
               (ambiguous); cyanophycin synthetase (ambiguous); multi-L-arginyl-poly-L-aspartate synthase 
               (ambiguous)