Correct positioning of Mg2+ in the active site of the enzyme involves addition of an "activating" carbon dioxide molecule (CO2) to a lysine in the active site (forming a carbamate).
Korrekt placering af Mg2+ i enzymets aktive sted kræver, at et lysin på det aktive sted får tilført et "aktiverende" CO2-molekyle (hvorved der dannes et karbamat).