Receptors, NicotinicAmino AcidsSequence Homology, Amino AcidAmino Acid SequenceAmino Acid SubstitutionCloning, MolecularBinding SitesMolecular Sequence DataProtein BindingBase SequenceAmino Acids, EssentialSequence AlignmentAmino Acid Transport SystemsKineticsMutationAmino Acid MotifsEscherichia coliPeptide FragmentsRecombinant ProteinsModels, MolecularMutagenesis, Site-DirectedProtein Structure, TertiaryHormone AntagonistsCell LineProtein ConformationExcitatory Amino Acid AntagonistsDNA, ComplementaryPeptidesDose-Response Relationship, DrugDopamine AntagonistsStructure-Activity RelationshipNeurokinin-1 Receptor AntagonistsSequence Homology, Nucleic AcidDNARNA, MessengerNarcotic AntagonistsRecombinant Fusion ProteinsAmino Acids, AromaticHistamine H2 AntagonistsLeucineAmino Acids, Branched-ChainBinding, CompetitiveSubstrate SpecificityBacterial ProteinsInterleukin 1 Receptor Antagonist ProteinMolecular WeightAmino Acids, SulfurCarrier ProteinsRats, Sprague-DawleyMuscarinic AntagonistsProteinsElectrophoresis, Polyacrylamide GelGABA AntagonistsRestriction MappingCells, CulturedProtein Structure, SecondaryPiperidinesAlanineHistamine H1 AntagonistsPlasmidsTransfectionDNA PrimersPurinergic P1 Receptor AntagonistsCattleGlycineConserved SequencePhylogenySequence Analysis, DNACricetinaeNicotinic AntagonistsDNA-Binding ProteinsGenes, BacterialRabbitsHistamine AntagonistsLigandsChromatography, High Pressure LiquidMembrane ProteinsOligopeptidesLysineAdenosine A2 Receptor AntagonistsPurinergic P2 Receptor AntagonistsAdrenergic alpha-1 Receptor AntagonistsSpecies SpecificitySignal TransductionBiological TransportRats, WistarValineIsoleucineArginineAmino Acid Transport Systems, BasicSerotonin 5-HT3 Receptor AntagonistsCHO CellsGene ExpressionCell MembraneGlutamic AcidTime FactorsSaccharomyces cerevisiaeAmino Acids, BasicTranscription FactorsProtein Biosynthesis