Mass SpectrometryTandem Mass SpectrometrySpectrometry, Mass, Electrospray IonizationSpectrometry, Mass, Matrix-Assisted Laser Desorption-IonizationGas Chromatography-Mass SpectrometryChromatography, LiquidChromatography, High Pressure LiquidProteomicsSpectrometry, Mass, Secondary IonProteomeMolecular Sequence DataAmino Acid SequenceSpectrometry, Mass, Fast Atom BombardmentElectrophoresis, Gel, Two-DimensionalDeuterium Exchange MeasurementPeptidesIsotope LabelingMolecular StructurePeptide MappingReproducibility of ResultsReference StandardsCalibrationMagnetic Resonance SpectroscopySolid Phase ExtractionDeuteriumCarbohydrate SequenceSensitivity and SpecificityLimit of DetectionProteinsIonsBody Mass IndexMetabolomicsPeptide FragmentsSubstance Abuse DetectionChromatography, Thin LayerChromatography, GasFourier AnalysisCyclotronsIndicators and ReagentsProtein Processing, Post-TranslationalIsotopesAnalytic Sample Preparation MethodsProtein BindingTrypsinMetabolomeElectrophoresis, Polyacrylamide GelPolysaccharidesGlycosylationOligosaccharidesCarbohydrate ConformationMolecular WeightSequence Analysis, ProteinIsomerismChromatography, Reverse-PhaseOxidation-ReductionIndicator Dilution TechniquesCattleElectrophoresis, CapillaryModels, MolecularComplex MixturesBiotransformationOxygen IsotopesGasesRecombinant ProteinsChemical FractionationBiological MarkersSpectrophotometry, AtomicBacterial ProteinsHydrolysisMicrochemistryProtein Array AnalysisForensic MedicineHydrogenAtmospheric PressureTime FactorsNanotechnologyAlgorithmsSpectrophotometry, UltravioletBinding SitesKineticsSpectroscopy, Fourier Transform InfraredGlycosphingolipidsChromatography, AffinityEscherichia coliProtein ConformationPhosphorylationDatabases, ProteinMethylationCysteineSequence Homology, Amino AcidGlycomicsChromatography, Ion ExchangeChemistry Techniques, AnalyticalModels, ChemicalCarbon IsotopesCross-Linking ReagentsSubstrate SpecificityProtein Structure, TertiarySoftwareStereoisomerism