title: Molecular basis of biological nitrogen fixation.
mesh_terms: D004579:Electron Transport; D005288:Ferredoxins / Q000235:genetics*; D005796:Genes; D005798:Genes, Bacterial; D007711:Klebsiella pneumoniae / Q000235:genetics* / Q000378:metabolism; D046911:Macromolecular Substances; D008983:Molybdoferredoxin / Q000235:genetics* / Q000378:metabolism; D009154:Mutation; D009586:Nitrogen Fixation; D009591:Nitrogenase / Q000235:genetics* / Q000378:metabolism; D009876:Operon; D011487:Protein Conformation
chemical_list: D005288:Ferredoxins; D046911:Macromolecular Substances; D008983:Molybdoferredoxin; D009591:Nitrogenase