3',5'-Cyclic-AMP PhosphodiesterasesModels, MolecularProtein ConformationBinding SitesEnzyme InhibitorsStructure-Activity RelationshipSubstrate SpecificityMolecular StructureMolecular Sequence DataAmino Acid SequenceStereoisomerismLigandsVisual CortexKineticsCationsIon Channel GatingProtein BindingDrug DesignPhotic StimulationOrientationRadioligand AssayCrystallography, X-RayAnionsProtein Structure, TertiaryNeuronsBinding, CompetitiveIonsMutagenesis, Site-DirectedElectrophysiologyPotassiumInhibitory Concentration 50Cations, MonovalentMembrane PotentialsCell Membrane PermeabilityDose-Response Relationship, DrugIon ChannelsOocytesXenopus laevisSodiumCell LineModels, NeurologicalVisual PathwaysRecombinant ProteinsElectric ConductivityPotassium ChannelsMolecular ConformationProtein Structure, SecondaryAction PotentialsPermeabilityPatch-Clamp TechniquesCHO CellsMutationAcoustic StimulationSequence Homology, Amino AcidStatic ElectricityCatalysisAlkenesModels, ChemicalConotoxinsCricetinaeAuditory PathwaysAmino Acid SubstitutionMacaca mulattaEcholocationMotion PerceptionChiropteraCesiumPeptidesCatsModels, BiologicalInferior Colliculi