Mass SpectrometrySpectrometry, Mass, Electrospray IonizationTandem Mass SpectrometryChromatography, LiquidIsotope LabelingProteomicsChromatography, High Pressure LiquidMagnetic Resonance SpectroscopySpectrometry, Mass, Matrix-Assisted Laser Desorption-IonizationGas Chromatography-Mass SpectrometryFourier AnalysisMolecular StructurePeptidesAlgorithmsMolecular Sequence DataSpectrometry, Mass, Secondary IonAmino Acid SequenceProteomeSpectrometry, Mass, Fast Atom BombardmentElectrophoresis, Gel, Two-DimensionalReproducibility of ResultsModels, MolecularCrystallography, X-RayDeuterium Exchange MeasurementSensitivity and SpecificityPeptide MappingCalibrationReference StandardsProteinsDeuteriumIonsCarbohydrate SequenceSolid Phase ExtractionProtein ConformationLimit of DetectionProtein BindingBody Mass IndexPeptide FragmentsMetabolomicsCrystallizationChromatography, Thin LayerBinding SitesSubstance Abuse DetectionChromatography, GasProtein Structure, TertiaryIndicators and ReagentsBacterial ProteinsCyclotronsIsotopesElectrophoresis, Polyacrylamide GelProtein Processing, Post-TranslationalTrypsinAnalytic Sample Preparation MethodsTime FactorsRecombinant ProteinsMetabolomePolysaccharidesMolecular WeightCattleGlycosylationIsomerismElectrophoresis, CapillaryOligosaccharidesEscherichia coliOxidation-ReductionCarbohydrate ConformationSequence Homology, Amino AcidSequence Analysis, ProteinNanotechnologyX-Ray DiffractionChromatography, Reverse-PhaseKineticsOxygen IsotopesHydrolysisIndicator Dilution TechniquesComplex MixturesStereoisomerismBiotransformationGasesBiological MarkersSubstrate SpecificityModels, ChemicalChemical FractionationHydrogenSoftwareSpectrophotometry, AtomicMicrochemistryBase SequenceProtein Structure, Secondary