Mass SpectrometryIon ChannelsSpectrometry, Mass, Electrospray IonizationBody Mass IndexTandem Mass SpectrometryIon TransportIon Channel GatingHeavy IonsSpectrometry, Mass, Matrix-Assisted Laser Desorption-IonizationSpectrometry, Mass, Secondary IonMolecular Sequence DataAmino Acid SequenceIon PumpsIon ExchangeMetalsChromatography, LiquidKineticsHydrogen-Ion ConcentrationPotassiumChromatography, High Pressure LiquidSodiumCalciumMagnesiumGas Chromatography-Mass SpectrometryCationsChromatography, Ion ExchangeModels, MolecularProteomicsChloridesZincPeptidesBinding SitesMolecular WeightGasesMembrane PotentialsLigand-Gated Ion ChannelsMolecular StructureTime FactorsBody CompositionCobaltSpectrometry, Mass, Fast Atom BombardmentObesityManganeseCyclotronsProtein ConformationMass ScreeningModels, BiologicalHeavy Ion RadiotherapyIon Exchange ResinsWaterModels, ChemicalCopperProtein BindingCations, MonovalentProtonsElectrophoresis, Polyacrylamide GelMagnetic Resonance SpectroscopyAnionsBody WeightFourier AnalysisCattleElectric ConductivityProteinsSubstrate SpecificityTemperatureProteomeBase SequenceEscherichia coliMetals, AlkaliSensitivity and SpecificityCell MembraneRecombinant ProteinsSequence Homology, Amino AcidElectrochemistryPeptide MappingOxidation-ReductionBacterial ProteinsPeptide FragmentsCalibrationIndicators and ReagentsCell Membrane PermeabilityLithiumProtein Structure, TertiaryNickelPotassium ChannelsCloning, MolecularAbsorptiometry, PhotonSodium ChannelsSolutionsBiological TransportThermodynamicsMutationAdipose TissueAmino AcidsQuaternary Ammonium CompoundsCrystallography, X-RayMass MediaCadmiumPatch-Clamp TechniquesCatalysis