NitrogenaseMolybdoferredoxinAcetyleneNitrogen FixationAzotobacterAzotobacter vinelandiiMolybdenumDinitrogenase ReductaseSubstrate SpecificityKlebsiella pneumoniaeRhodospirillum rubrumOxidoreductasesFerredoxinsNitrogenKineticsDithioniteHydrogenRhodobacter capsulatusEthaneAmmoniaOxidation-ReductionTricarboxylic AcidsMolecular Sequence DataBacterial ProteinsCyanobacteriaAzospirillum brasilenseMetalloproteinsGenes, BacterialMethionine SulfoximineVanadiumFlavodoxinAmino Acid SequenceCatalysisElectron Spin Resonance SpectroscopyArgonQuaternary Ammonium CompoundsRhodopseudomonasAdenosine TriphosphateClostridiumModels, MolecularGluconacetobacterTungstenBinding SitesRhizobiumMutationNonheme Iron ProteinsIronPII Nitrogen Regulatory ProteinsAnabaenaElectron TransportAzoarcusOxygenAnabaena variabilisImidesAmmonium ChlorideAnaerobiosisHydrolysisProtein BindingAdenosine DiphosphateProtein ConformationIron-Sulfur ProteinsGlutamate-Ammonia LigaseEscherichia coliBase SequenceHydrogen-Ion ConcentrationEnzyme RepressionGene Expression Regulation, BacterialLeghemoglobinSymbiosisCatalytic DomainCoenzymesIron CompoundsCyanotheceElectrophoresis, Polyacrylamide GelSpectrophotometryCloning, MolecularCrystallography, X-RayN-Glycosyl HydrolasesDarknessAcetobacteraceaeElectronsSequence Homology, Amino AcidMethylphenazonium MethosulfateMutagenesis, Site-DirectedFrankiaADP Ribose TransferasesHydrogenaseSpectrum AnalysisGram-Negative Aerobic BacteriaRecombinant ProteinsModels, ChemicalDiazooxonorleucineAmino AcidsProtein Structure, Tertiary