Enzyme EC numbers

EC (Enzyme Commission) numbers assigned by IUPAC-IUBMB

5. Isomerases;
  5.5  Intramolecular lyases;
    5.5.1  Intramolecular lyases (only sub-subclass identified to date)
      5.5.1.-  halimadienyl-diphosphate synthase; Rv3377c; halimadienyl diphosphate synthase; 
               tuberculosinol diphosphate synthase