G Protein-Coupled Inwardly-Rectifying Potassium ChannelsPotassium Channels, Inwardly RectifyingPotassium ChannelsGTP-Binding Protein beta SubunitsGTP-Binding Protein gamma SubunitsMice, Neurologic MutantsOocytesGTP-Binding ProteinsIon Channel GatingXenopus laevisHeterotrimeric GTP-Binding ProteinsXenopusBaclofenReceptors, GABA-BReceptor, Muscarinic M2RNA, ComplementaryRGS ProteinsProtein SubunitsPotassium Channel BlockersPhosphatidylinositol 4,5-DiphosphateElectrophysiologyPatch-Clamp TechniquesPimozideHeart AtriaThioridazineBee VenomsBioluminescence Resonance Energy Transfer TechniquesGTP-Binding Protein alpha Subunits, Gi-GoMembrane PotentialsBarium CompoundsEnkephalin, Ala(2)-MePhe(4)-Gly(5)-GABA AgonistsBariumNeuronsAnalgesiaMolecular Sequence DataElectric ConductivityPertussis ToxinAmino Acid SequencePotassiumGTP-Binding Protein alpha Subunit, Gi2Mice, KnockoutGTP-Binding Protein alpha Subunits, Gq-G11Locus CoeruleusGuanosine 5'-O-(3-Thiotriphosphate)CarbacholReceptors, Opioid, muRecombinant ProteinsGTP-Binding Protein RegulatorsReceptors, OpioidPoint MutationCHO CellsRecombinant Fusion ProteinsCerebellumCerebellar CortexBrain ChemistryClozapineTransfectionAutoreceptorsPeptide-N4-(N-acetyl-beta-glucosaminyl) Asparagine AmidaseReceptors, Serotonin, 5-HT1AcetylcholineDose-Response Relationship, DrugAtrial FunctionVirulence Factors, BordetellaCricetinaeCyclazocineProtein BindingBrainCell MembraneMorphineRNA, MessengerMicroscopy, ImmunoelectronReceptor, Adenosine A1DimerizationMicroinjectionsSignal TransductionProtein Structure, TertiarySorting NexinsMutagenesisReceptors, Dopamine D2GABA-B Receptor AgonistsEnkephalinsEthanolCOS CellsPhospholipase C betaIon TransportAsparagineAdrenergic FibersStructure-Activity RelationshipSubstantia NigraNaphthalenesNeural InhibitionHippocampusAnalgesics, OpioidProtein Structure, QuaternaryMice, Inbred C57BLGreen Fluorescent ProteinsOpioid PeptidesDendrites