Protein ConformationModels, MolecularProtein BindingProtein Structure, SecondaryBinding SitesProtein Structure, TertiaryCircular DichroismCrystallography, X-RayMolecular ConformationThermodynamicsMolecular Sequence DataAmino Acid SequenceSpectrometry, FluorescenceKineticsProtein FoldingMolecular Dynamics SimulationMagnetic Resonance SpectroscopyNucleic Acid ConformationNuclear Magnetic Resonance, BiomolecularLigandsProtein DenaturationModels, ChemicalStructure-Activity RelationshipHydrogen-Ion ConcentrationTemperatureHydrogen BondingMutationEscherichia coliProtein Structure, QuaternaryMutagenesis, Site-DirectedComputer SimulationAllosteric RegulationDimerizationSolutionsRecombinant ProteinsTryptophanCatalytic DomainPolymorphism, Single-Stranded ConformationalFluorescence Resonance Energy TransferSpectrophotometry, UltravioletAmino Acid SubstitutionCatalysisPeptidesAdenosine TriphosphatePeptide FragmentsBacterial ProteinsSolventsStatic ElectricityHydrolysisProtein MultimerizationEpitopesCysteineProteinsAllosteric SiteFluorescenceSpectroscopy, Fourier Transform InfraredMolecular StructureBase SequenceSubstrate SpecificityEscherichia coli ProteinsGuanidineProtein StabilityEntropyDNACalorimetryDisulfidesWaterHydrophobic and Hydrophilic InteractionsMotionCryoelectron MicroscopyCrystallographyBiophysicsApoproteinsDeuterium Exchange MeasurementAnilino NaphthalenesulfonatesMagnesiumProtein UnfoldingMacromolecular SubstancesEnergy TransferTrypsinTrifluoroethanolScattering, Small AngleCattleSpectrophotometry, InfraredEnzyme StabilityProtonsEpitope MappingSequence Homology, Amino AcidMutant ProteinsBiophysical PhenomenaNaphthalenesulfonatesModels, BiologicalX-Ray DiffractionAntibodies, MonoclonalFluorescent DyesScattering, RadiationCalorimetry, Differential ScanningAdenosine DiphosphateNucleotidesPliability