Amino Acids, NeutralAmino Acid Transport Systems, NeutralAmino AcidsAmino Acid Transport SystemsAmino Acid Transport System ASCLarge Neutral Amino Acid-Transporter 1Amino Acid Transport System AAminoisobutyric AcidsHartnup DiseaseBiological TransportLeucineAmino Acid Transport Systems, BasicPhenylalanineAlanineSequence Homology, Amino AcidAntigens, CD98 Heavy ChainAmino Acids, CyclicAmino Acid SequenceTryptophanAmino Acids, DiaminoKineticsSodiumAntigens, CD98 Light ChainsAntigens, CD98Biological Transport, ActiveCloning, Molecularbeta-AlanineAmino Acids, EssentialAmino Acid SubstitutionCarrier ProteinsMolecular Sequence DataProlineBlood-Brain BarrierGlycineAmino Acid Transport System y+Amino Acids, Branched-ChainValineIsoleucineHydrogen-Ion ConcentrationGlutamineAspartameCystineXenopus laevisBase SequenceNorleucineArginineMutationSubstrate SpecificityOocytesAmino Acid Transport System LDNA, ComplementarySerineMethionineMutagenesis, Site-DirectedSequence AlignmentLysineRationalizationAmino Acid Transport System y+LDietary ProteinsCell LineDihydroxyphenylalanineStructure-Activity RelationshipBinding SitesThreonineRecombinant ProteinsBrain4-ChloromercuribenzenesulfonateRNA, MessengerRNA, ComplementaryStereoisomerismProtein ConformationTyrosineCell MembraneMicrovilliDipeptidesGlutamatesGlutamate Plasma Membrane Transport ProteinsModels, MolecularCystinuriaAmino Acid Transport System X-AGXenopusRabbitsDNAMembrane Transport ProteinsCysteineProtein BindingPhenylketonuriasHypertonic SolutionsCattleAspartic AcidCarbon RadioisotopesAmino Acid MotifsEscherichia coliProtein Structure, TertiaryHepatic EncephalopathyKidneyHistidineMembrane ProteinsGlutamic AcidRats, Inbred Strains