NitrogenaseMolybdoferredoxinAcetyleneNitrogen FixationAzotobacterAzotobacter vinelandiiMolybdenumDinitrogenase ReductaseKlebsiella pneumoniaeRhodospirillum rubrumFerredoxinsOxidoreductasesNitrogenDithioniteRhodobacter capsulatusHydrogenEthaneAmmoniaTricarboxylic AcidsBacterial ProteinsCyanobacteriaGenes, BacterialKineticsOxidation-ReductionMethionine SulfoximineAzospirillum brasilenseMetalloproteinsVanadiumFlavodoxinQuaternary Ammonium CompoundsArgonElectron Spin Resonance SpectroscopyRhodopseudomonasMutationMolecular Sequence DataProtein BiosynthesisClostridiumGluconacetobacterRhizobiumTungstenAdenosine TriphosphateIronPII Nitrogen Regulatory ProteinsAmmonium ChlorideNonheme Iron ProteinsAnabaenaImidesEnzyme RepressionElectron TransportAzoarcusAnabaena variabilisOxygenGene Expression Regulation, BacterialBase SequenceGlutamate-Ammonia LigaseMolecular StructureAnaerobiosisCatalysisIron-Sulfur ProteinsEscherichia coliLeghemoglobinSymbiosisAmino Acid SequenceRNA, MessengerProtein Synthesis InhibitorsAdenosine DiphosphateCell-Free SystemStereoisomerismIron CompoundsCyanotheceChloramphenicolDarknessElectrophoresis, Polyacrylamide GelTranscription, GeneticCoenzymesAmino AcidsCulture MediaMethylphenazonium MethosulfateAcetobacteraceaeCells, CulturedHydrogenaseFrankiaModels, MolecularCycloheximideDiazooxonorleucineDNAADP Ribose TransferasesCloning, MolecularOperonN-Glycosyl HydrolasesSpectrum AnalysisDNA ReplicationPlasmidsCyclizationDNA, BacterialAzaserineElectronsSpectrophotometry