Substrate SpecificityAmino Acid SequenceMolecular Sequence DataModels, MolecularKineticsCatalytic DomainBinding SitesMutagenesis, Site-DirectedCrystallography, X-RayCatalysisSequence Homology, Amino AcidProtein Structure, TertiaryStructure-Activity RelationshipAmino Acid Transport SystemsRecombinant ProteinsSequence AlignmentProtein ConformationMutationMolecular StructureProtein BindingEscherichia coliBiological TransportHydrolysisProtein Structure, SecondaryProtein EngineeringCloning, MolecularAmino Acid SubstitutionCarrier ProteinsXenopus laevisAmino AcidsMembrane Transport ProteinsStereoisomerismEscherichia coli ProteinsBacterial ProteinsBase SequenceHydrogen-Ion ConcentrationIsoenzymesMutagenesisOocytesConserved SequenceModels, ChemicalDNA PrimersCell LinePeptidesMembrane ProteinsPhosphorylationPoint MutationRecombinant Fusion ProteinsDNA, ComplementaryModels, BiologicalSaccharomyces cerevisiaePhylogenyLigandsOxidation-ReductionBinding, CompetitiveAdenosine TriphosphateEnzyme InhibitorsChromatography, High Pressure LiquidOligopeptidesCationsEnzyme ActivationCattleMolecular ConformationDrug DesignDose-Response Relationship, DrugTime FactorsTemperatureElectrophoresis, Polyacrylamide GelMolecular WeightAnionsVisual CortexCell MembraneIonsDNANeuronsCells, CulturedMagnetic Resonance SpectroscopyAmino Acid MotifsEndopeptidasesHydrogen BondingCricetinaeInhibitory Concentration 50Ion Channel GatingPhotic StimulationThermodynamicsCHO CellsLiverEnzyme StabilityTransfectionSignal TransductionSubstrate CyclingMass SpectrometryCations, DivalentOrientationRadioligand AssaySodiumStatic ElectricityLysineArginineAlkenes