Deuterium Exchange MeasurementDeuteriumHydrogenBotanyMass SpectrometryDeuterium OxideSpectrometry, Mass, Electrospray IonizationModels, MolecularAmidesProtein ConformationPlant TranspirationMagnetic Resonance SpectroscopySpectroscopy, Fourier Transform InfraredPepsin AProtein Structure, SecondaryHydrogen BondingPulmonary Gas ExchangeGasesAmino Acid SequenceMolecular Sequence DataProtein Structure, TertiaryCarbon DioxideProtein UnfoldingCyclotronsPeptidesKineticsPhotosynthesisSolventsFourier AnalysisProtein FoldingNuclear Magnetic Resonance, BiomolecularProtein BindingChromatography, Reverse-PhaseMolecular ConformationPlant LeavesLigandsSpectrometry, Mass, Matrix-Assisted Laser Desorption-IonizationPeptide FragmentsProtein Structure, QuaternaryProtein StabilityMyoglobinThermodynamicsGroup IA Phospholipases A2Hydrogen PeroxideAllosteric SiteProtonsPeptide MappingCircular DichroismProteinsCrystallography, X-RayProtein DenaturationBinding SitesProtein MultimerizationRecombinant ProteinsModels, ChemicalCatalytic DomainMolecular StructureAmyloidHydrogen SulfideCattleSpectrophotometry, InfraredChromatography, High Pressure LiquidHydrogen-Ion Concentration