Receptors, NicotinicAmino AcidsSequence Homology, Amino AcidAmino Acid SequenceCloning, MolecularChromatography, AffinityBinding SitesMolecular Sequence DataKineticsProtein BindingBase SequenceAmino Acids, EssentialRecombinant ProteinsSequence AlignmentAmino Acid Transport SystemsStructure-Activity RelationshipModels, MolecularEscherichia coliMutationPeptide FragmentsMutagenesis, Site-DirectedBinding, CompetitiveProtein ConformationAmino Acid MotifsCell LineProtein Structure, TertiaryPeptidesHormone AntagonistsDose-Response Relationship, DrugExcitatory Amino Acid AntagonistsDNA, ComplementaryAffinity LabelsSubstrate SpecificityDopamine AntagonistsMolecular WeightAntibody AffinityDNANeurokinin-1 Receptor AntagonistsSequence Homology, Nucleic AcidRecombinant Fusion ProteinsNarcotic AntagonistsAmino Acids, AromaticElectrophoresis, Polyacrylamide GelRNA, MessengerLigandsLeucineHistamine H2 AntagonistsBacterial ProteinsCarrier ProteinsRats, Sprague-DawleyAmino Acids, Branched-ChainInterleukin 1 Receptor Antagonist ProteinAmino Acids, SulfurMuscarinic AntagonistsCattleAlanineProteinsProtein Structure, SecondaryRadioligand AssayPiperidinesRabbitsCells, CulturedCricetinaeGABA AntagonistsGlycineChromatography, High Pressure LiquidRestriction MappingDNA PrimersHistamine H1 AntagonistsSpecies SpecificityPurinergic P1 Receptor AntagonistsTransfectionOligopeptidesPlasmidsPhylogenyBiological TransportCell MembraneNicotinic AntagonistsSequence Analysis, DNACHO CellsLysineHistamine AntagonistsConserved SequenceAdrenergic alpha-1 Receptor AntagonistsGenes, BacterialMembrane ProteinsAdenosine A2 Receptor AntagonistsRats, WistarPurinergic P2 Receptor AntagonistsArginineCalciumTrypsinIsoleucineValineAspartic AcidGlutamic AcidAmino Acid Transport Systems, BasicPoint MutationMacromolecular SubstancesGene Expression