Amino AcidsAmino Acid Transport SystemsReceptors, Purinergic P2X1LeucineSequence Homology, Amino AcidAmino Acid SequenceAmino Acid SubstitutionCloning, MolecularCell MembraneMembranesMembrane LipidsAmino Acids, EssentialIntracellular MembranesEscherichia coliBase SequenceSequence AlignmentMutationMembrane PotentialsBinding SitesMolecular Sequence DataAmino Acid MotifsMembranes, ArtificialKineticsMutagenesis, Site-DirectedProtein ConformationModels, MolecularProtein BindingProtein Structure, TertiaryRecombinant ProteinsDNA, ComplementaryPeptide FragmentsCell LineMolecular WeightBacterial ProteinsSequence Homology, Nucleic AcidStructure-Activity RelationshipPeptidesAmino Acids, AromaticElectrophoresis, Polyacrylamide GelAmino Acids, Branched-ChainErythrocyte MembraneSubstrate SpecificityRecombinant Fusion ProteinsAmino Acids, SulfurCarrier ProteinsMembrane FluidityDNAProtein Structure, SecondaryCell Membrane PermeabilityHydrogen-Ion ConcentrationProteinsRestriction MappingCattleRNA, MessengerPhylogenyMembrane Transport ProteinsGenes, BacterialPlasmidsAlanineSequence Analysis, DNABasement MembraneSpecies SpecificityChromatography, High Pressure LiquidAmino Acid Transport Systems, BasicDNA PrimersMembrane GlycoproteinsConserved SequenceTrypsinLysineAmino Acids, NeutralRabbitsTransfectionIsoleucineAmino Acids, BasicTemperatureCells, CulturedProtein BiosynthesisGlycineCodonBiological TransportProtein TransportMicroscopy, ElectronModels, BiologicalSequence DeletionCricetinaeMacromolecular SubstancesGenesCysteineAmino Acids, DiaminoOpen Reading FramesMutagenesisArgininePolymerase Chain ReactionGlutamineCyanogen BromideMethionineProlineHydrolysisAspartic AcidPoint Mutation