The pathways of nitrogen fixation.

Adenosine Triphosphate/metabolism Ammonia/biosynthesis Azotobacter/metabolism Bacteria/enzymology,metabolism Cell-Free System Cyanobacteria/enzymology,metabolism Electron Transport Ferredoxins/metabolism Flavoproteins/metabolism Formates/metabolism Hydrogen/metabolism NAD/metabolism NADP/metabolism Nitrogen/metabolism Nitrogen Fixation Oxidoreductases/isolation & purification,metabolism Photosynthesis Pyruvates/metabolism

Ferredoxins Flavoproteins Formates Pyruvates NAD NADP Ammonia Hydrogen Adenosine Triphosphate Oxidoreductases Nitrogen