Mass SpectrometryComplex MixturesTandem Mass SpectrometrySpectrometry, Mass, Electrospray IonizationSpectrometry, Mass, Matrix-Assisted Laser Desorption-IonizationAmino AcidsGas Chromatography-Mass SpectrometryAmino Acid SequenceChromatography, LiquidSequence Homology, Amino AcidChromatography, High Pressure LiquidProteomicsMolecular Sequence DataPeptidesProteomeCloning, MolecularAmino Acid SubstitutionMolecular StructureProteinsPeptide FragmentsSpectrometry, Mass, Secondary IonMagnetic Resonance SpectroscopyBase SequenceEscherichia coliKineticsSequence AlignmentModels, MolecularProtein BindingPeptide MappingElectrophoresis, Gel, Two-DimensionalMolecular WeightSpectrometry, Mass, Fast Atom BombardmentMutationBinding SitesRecombinant ProteinsIsotope LabelingAmino Acids, EssentialCattleTrypsinElectrophoresis, Polyacrylamide GelReproducibility of ResultsBacterial ProteinsProtein ConformationIonsSubstrate SpecificityCarbohydrate SequenceHydrocarbonsStructure-Activity RelationshipModels, ChemicalChromatography, GasDNAChromatography, Thin LayerAmino Acid Transport SystemsAmino Acid MotifsCell LinePolycyclic CompoundsDNA, ComplementaryEnvironmental MonitoringAir PollutantsProtein Structure, TertiarySensitivity and SpecificityChromatography, Ion ExchangeEnvironmental PollutantsReference StandardsOrganic ChemicalsWater Pollutants, ChemicalMutagenesis, Site-DirectedMetabolomicsProtein Processing, Post-TranslationalHydrolysisChemical FractionationOxidation-ReductionDeuterium Exchange MeasurementSpecies SpecificityFuel OilsOligosaccharidesSequence Analysis, DNATime FactorsGlycosylationPolycyclic Hydrocarbons, AromaticLysineChemistry Techniques, AnalyticalLiverSequence AnalysisGasesRNA, MessengerLeucineSequence Homology, Nucleic AcidChemical PhenomenaPolysaccharidesPetroleumVolatilizationIsomerismPolychlorinated BiphenylsCalibrationAlgorithmsDeuteriumSequence Analysis, ProteinIndicators and ReagentsBiotransformation