Azotobacter vinelandii vanadium nitrogenase: Formaldehyde is a product of catalyzed HCN reduction and excess ammonia arises directed from catalyzed azide reduction

The Mo-nitrogenase-catalyzed reduction of both cyanide and azide results in the production of excess NH(sub 3), which is an amount of NH(sub 3) formed from the reactions. Unlike Mo-nitrogenase, CO could not completely eliminate either cyanide or azide reduction by V-nitrogenase, but eliminate the inhibition of both electron flux and MgATP hydrolysis by CN(super -).