Models, MolecularPyronineMolecular Sequence DataBinding SitesBase SequenceAmino Acid SequenceProtein ConformationDNACrystallography, X-RayMutationProtein Structure, SecondaryProtein BindingSequence Homology, Amino AcidMutagenesis, Site-DirectedEscherichia coliProtein Structure, TertiaryKineticsNucleic Acid ConformationCross-Linking ReagentsStructure-Activity RelationshipMutagenesisModels, BiologicalSaccharomyces cerevisiaeSequence AlignmentPromoter Regions, GeneticMicroscopy, ElectronCoculture TechniquesSpectrometry, Mass, Fast Atom BombardmentBacterial ProteinsCell MembraneMembrane ProteinsCloning, MolecularTime FactorsTranscription, GeneticCell LineMolecular StructureHydrogen BondingMagnetic Resonance SpectroscopyMolecular ConformationModels, ChemicalStereoisomerismHydrogenOxidation-ReductionOxygen IsotopesSulfurWaterMass SpectrometrySubstrate SpecificityX-Ray DiffractionThermodynamicsCatalysisElectronsSpectrum AnalysisBase PairingProteinsElectron Spin Resonance SpectroscopyChemistryIronQuantum TheoryZincChemical PhenomenaDeuteriumComputer SimulationOxygenHydrogen-Ion ConcentrationLigandsCrystallizationCatalytic DomainDNA-Directed DNA PolymeraseTemperatureCrystallographySpectrophotometryGuanineStatic ElectricitySolventsCopperProtons