Hydrogen-Ion ConcentrationAcidsTemperatureDrug StabilityKineticsProtein DenaturationMolecular Sequence DataHot TemperatureProtein ConformationAmino Acid SequenceModels, MolecularBacterial ProteinsCircular DichroismThermodynamicsProtein BindingChromatography, High Pressure LiquidProtein Structure, SecondaryModels, BiologicalEsophageal pH Monitoring