NADH, a physiological electron donor in clostridial nitrogen fixation.

Acetylene/metabolism Ammonia Chromatography, DEAE-Cellulose Chromatography, Gas Chromatography, Ion Exchange Clostridium/enzymology Deoxyribonucleases Electron Transport Ferredoxins Formates Hydrogen Kinetics NAD/metabolism Nitrogen Nitrogen Fixation Nitrogenase/metabolism Oxidation-Reduction Pyruvates Sulfites

Ferredoxins Formates Pyruvates Sulfites NAD Ammonia Hydrogen Nitrogenase Deoxyribonucleases Nitrogen Acetylene