Nitrate ReductaseQuaternary Ammonium CompoundsAmmonium SulfateAmmonium ChlorideAmmonium CompoundsNitrate Reductase (NADH)Silver NitrateNitrogenAmmoniaAmmonium HydroxideNitrate Reductase (NAD(P)H)ChloratesAnion Transport ProteinsHydrogen-Ion ConcentrationMolybdenumPlant RootsMethylaminesPotassium CompoundsFertilizersGalliumOxidation-ReductionIsosorbide DinitrateCulture MediaNitroglycerinGlutamate-Ammonia LigaseDenitrificationNitrogen IsotopesMolecular Sequence DataNitratesNitrogen CompoundsNitric OxideKineticsPentaerythritol TetranitrateOxidoreductasesNitrogen FixationCation Transport ProteinsBacterial ProteinsWater Pollutants, ChemicalEscherichia coliMolecular WeightSoilChlorellaNitrosomonasMutationTungsten CompoundsGene Expression Regulation, BacterialNitric AcidTrimethyl Ammonium CompoundsGlutamate SynthaseCarbonChemical PrecipitationNitrate Reductase (NADPH)Amino AcidsGlutamineTemperatureDrug ToleranceBacteriaAcetatesBiological TransportAmino Acid SequenceEnzyme RepressionNitrous OxideSulfatesPlant ShootsPlant ProteinsPII Nitrogen Regulatory ProteinsFormatesHydroponicsRNA, Ribosomal, 16SChromatography, GelPhylogenyGeologic SedimentsElectrophoresis, Polyacrylamide GelPteridinesUreaGlutamate DehydrogenaseChromatography, Ion ExchangeCyanobacteriaBioreactorsSoil MicrobiologySeawaterDNA, BacterialArabidopsisNitrobacterPerchloratesOperonFractional PrecipitationPlant LeavesGene Expression Regulation, PlantWater Pollution, ChemicalGenes, BacterialFresh WaterCoenzymesSequence Analysis, DNAPseudomonasNeurosporaAnionsSubstrate SpecificityAspergillus nidulansNitrogenase