GuanidineGuanidinesProtein DenaturationMethylguanidineCircular DichroismMolecular StructureSpectrometry, FluorescenceStructure-Activity RelationshipKineticsProtein FoldingUreaProtein ConformationSpectrophotometry, UltravioletMolecular WeightAmino AcidsHydrogen-Ion ConcentrationMagnetic Resonance SpectroscopyMolecular Sequence DataStereoisomerismChromatography, GelThermodynamicsEscherichia coliElectrophoresis, Polyacrylamide GelAmino Acid SequenceChemistryIndicators and ReagentsBinding SitesChemical PhenomenaAnilino NaphthalenesulfonatesTemperatureMacromolecular SubstancesChromatography, High Pressure LiquidModels, MolecularEnzyme StabilityCattlePoliovirusProtein BindingDrug StabilityRecombinant ProteinsMolecular ConformationTryptophanHot TemperatureReceptors, sigmaProtein RenaturationEnzyme ReactivatorsThiocyanatesDisulfidesSpectrophotometrySulfhydryl CompoundsHematoporphyrin DerivativeUltracentrifugationSodium Dodecyl SulfateRibonuclease, PancreaticDose-Response Relationship, DrugRabbitsOxidation-ReductionSolubilityBase SequencePhysicochemical PhenomenaChemistry, PhysicalCell LineProtein Structure, SecondaryBacterial ProteinsPeptidesMutationMass SpectrometrySubstrate SpecificityCatalysisNatal TeethAminesChromatography, Ion ExchangeDithionitrobenzoic AcidProteoglycansPeptide FragmentsCarbohydratesSolventsChromatographyArginine KinaseTrypsinHydrolysisInhibitory Concentration 50Echovirus 9Models, ChemicalPlasmidsPempidineAdenosine Diphosphate SugarsBromidesMercaptoethanolChromatography, Thin LayerImmunodiffusionMuramidaseSolutionsArchaeoglobusHematoporphyrinsAffinity LabelsBinding, CompetitiveFluorescent DyesProtein UnfoldingHistamine AgonistsSpectrophotometry, Infrared