Photochemical ProcessesLightGuanosine 5'-O-(3-Thiotriphosphate)GTP-Binding ProteinsHeterotrimeric GTP-Binding ProteinsSulfur RadioisotopesArrestinsAluminum CompoundsGTP-Binding Protein alpha Subunits, Gi-GoReceptors, Opioid, muGTP-Binding Protein alpha SubunitsEnkephalin, Ala(2)-MePhe(4)-Gly(5)-PlakinsPertussis ToxinSignal TransductionGTP-Binding Protein alpha Subunits, GsEnkephalin, D-Penicillamine (2,5)-GTP-Binding Protein gamma SubunitsReceptors, G-Protein-CoupledVirulence Factors, BordetellaGuanosine TriphosphateRhodopsinGuanosine DiphosphateWasp VenomsReceptors, Opioid, deltaGTP-Binding Protein alpha Subunits, Gq-G11Protein BindingReceptor, Anaphylatoxin C5aReceptors, PeptideFluoridesReceptors, Opioid, kappaRGS ProteinsReceptors, Mating FactorCell MembraneMolecular Sequence DataAmino Acid SequenceCell LineEnzyme ActivationPhosphorylationLigandsAdenylate CyclaseCHO CellsReceptors, OpioidGTP-Binding Protein beta SubunitsProtein Structure, TertiaryReceptors, Adrenergic, beta-2Sodium FluorideTransfectionReceptors, Formyl PeptideGTP-Binding Protein alpha Subunit, Gi2TransducinHEK293 CellsCricetinaeFluorescence Resonance Energy TransferNarcotic AntagonistsCyclic AMPGTP PhosphohydrolasesKineticsEnkephalinsProtein ConformationInositol PhosphatesReceptors, Dopamine D2Cells, CulturedBinding SitesType C PhospholipasesRecombinant Fusion ProteinsCyclic AMP Response Element-Binding ProteinCholera ToxinAnalgesics, OpioidCricetulusCalciumReceptors, MuscarinicModels, MolecularMutationMutagenesis, Site-DirectedBinding, CompetitiveDose-Response Relationship, DrugN-Formylmethionine Leucyl-PhenylalanineCOS CellsCattleProtein TransportRecombinant ProteinsProtein MultimerizationThionucleotidesModels, BiologicalPeptidesImmunoblottingSequence Homology, Amino AcidProtein Structure, QuaternaryTrans-ActivatorsCercopithecus aethiopsTime FactorsProtein Structure, SecondaryMitogen-Activated Protein Kinase 3Structure-Activity RelationshipSTAT1 Transcription FactorReceptors, Cell SurfaceMAP Kinase Signaling SystemAmino Acid MotifsMitogen-Activated Protein Kinase 1