Protein ConformationModels, MolecularAmino Acid SequenceBinding SitesMolecular Sequence DataProtein Structure, TertiaryProtein BindingProtein Structure, SecondaryCrystallography, X-RayMutagenesis, Site-DirectedKineticsCircular DichroismStructure-Activity RelationshipMolecular ConformationThermodynamicsMutationSpectrometry, FluorescenceMagnetic Resonance SpectroscopyProtein FoldingEscherichia coliAmino Acid SubstitutionBase SequenceSequence Homology, Amino AcidRecombinant ProteinsCysteineNuclear Magnetic Resonance, BiomolecularHydrogen-Ion ConcentrationLigandsPeptide FragmentsMolecular Dynamics SimulationModels, ChemicalSubstrate SpecificityHydrogen BondingCatalytic DomainPeptidesNucleic Acid ConformationProtein DenaturationCatalysisTryptophanSequence AlignmentTemperatureDimerizationProtein Structure, QuaternaryBacterial ProteinsAmino AcidsHistidineLysineHydrolysisComputer SimulationProteinsSolutionsDisulfidesStatic ElectricityDNASpectrophotometry, UltravioletCloning, MolecularAllosteric RegulationTrypsinAmino Acid MotifsMolecular StructureEscherichia coli ProteinsHydrophobic and Hydrophilic InteractionsCattleCell LineConserved SequenceProtein MultimerizationEpitopesPoint MutationAlanineAdenosine TriphosphateElectrophoresis, Polyacrylamide GelMutagenesisDrug ResiduesEnzyme StabilityRecombinant Fusion ProteinsMacromolecular SubstancesSolventsAspartic AcidFluorescence Resonance Energy TransferProtein StabilityPhosphorylationCell MembranePolymorphism, Single-Stranded ConformationalPesticide ResiduesArginineSerineProtonsTyrosineWaterOxidation-ReductionCrystallographyGuanidineFluorescenceStructural Homology, ProteinCalorimetryMembrane ProteinsSpectroscopy, Fourier Transform InfraredApoproteinsModels, BiologicalChromatography, High Pressure Liquid