DeuteriumDeuterium OxideDeuterium Exchange MeasurementIsotopesIsotope LabelingOxygen IsotopesNitrogen IsotopesCarbon IsotopesHydrogenMass SpectrometryBody WaterIndicator Dilution TechniquesMagnetic Resonance SpectroscopyZinc IsotopesRadioisotope Dilution TechniqueSulfur IsotopesKineticsIron IsotopesWaterSpectrometry, Mass, Electrospray IonizationGas Chromatography-Mass SpectrometryStrontium IsotopesModels, MolecularModels, ChemicalAmidesMolecular ConformationCatalysisProtein ConformationSolventsBody Fluid CompartmentsProtonsOxidation-ReductionStereoisomerismMethenamineHydrogen-Ion ConcentrationNuclear Magnetic Resonance, BiomolecularMolecular StructureThermodynamicsMeteoroidsGasesCarbon-Carbon LyasesLipid BilayersDimyristoylphosphatidylcholineHydrogen BondingTemperatureSpectroscopy, Fourier Transform InfraredGroup IA Phospholipases A2Pepsin AChromatography, LiquidAmino Acid SequenceMolecular Sequence DataProtein Structure, SecondaryTandem Mass SpectrometryFourier AnalysisPeptidesCarbonSubstrate SpecificityBody CompositionMathematicsSpectrophotometry, InfraredNeutron DiffractionTritiumNitroparaffinsChromatography, High Pressure LiquidBinding SitesMercury IsotopesElectric ImpedanceProtein Binding1,2-DipalmitoylphosphatidylcholinePhosphatidylcholinesHydroxylation