Protein ConformationMolecular ConformationMolecular Sequence DataCrystallography, X-RayProtein Structure, SecondaryAmino Acid SequenceBinding SitesCircular DichroismProtein BindingMagnetic Resonance SpectroscopyProtein Structure, TertiaryThermodynamicsProtein FoldingHydrogen BondingKineticsStructure-Activity RelationshipSolutionsMutationNuclear Magnetic Resonance, BiomolecularModels, ChemicalPolymorphism, Single-Stranded ConformationalLigandsComputer SimulationMolecular Dynamics SimulationPeptidesSpectrometry, FluorescenceDNAEscherichia coliProtein Structure, QuaternaryTemperatureHydrogen-Ion ConcentrationProtein DenaturationCarbohydrate ConformationMolecular StructureX-Ray DiffractionRecombinant ProteinsMutagenesis, Site-DirectedDimerizationProteinsCatalytic DomainAmino Acid SubstitutionCrystallographyPeptide FragmentsWaterBacterial ProteinsModels, BiologicalSubstrate SpecificityStatic ElectricitySpectrophotometry, UltravioletSequence Homology, Amino AcidSolventsCatalysisProtein MultimerizationPolydeoxyribonucleotidesTryptophanHydrophobic and Hydrophilic InteractionsSpectrum Analysis, RamanCrystallizationCattleCell LineDisulfidesSequence AlignmentAllosteric RegulationAdenosine TriphosphateAlgorithmsSpectroscopy, Fourier Transform InfraredHydrolysisPoint MutationCysteineAmino Acid MotifsMacromolecular SubstancesBiophysicsMagnesiumTrifluoroethanolStereoisomerismScattering, Small AngleProtein StabilityEscherichia coli ProteinsModels, StructuralBiophysical PhenomenaProtonsFluorescence Resonance Energy TransferTime FactorsLipid BilayersElectrophoresis, Polyacrylamide GelSpectrophotometry, InfraredStructural Homology, ProteinOligodeoxyribonucleotidesChemistry, PhysicalMutant ProteinsCell MembraneAmino AcidsProlineCalorimetryEpitopesAllosteric SiteDrug DesignBase PairingTrypsinRNA