SemicarbazonesAmino Acid SequenceMolecular Sequence DataMesylatesMutagenesis, Site-DirectedProtein Structure, SecondaryCysteineProtein Structure, TertiaryModels, MolecularIon Channel GatingProtein ConformationStructure-Activity RelationshipMembrane ProteinsBinding SitesCricetinaeCell MembraneTransfectionSequence Homology, Amino AcidBase SequenceMutationCystic Fibrosis Transmembrane Conductance RegulatorRecombinant Fusion ProteinsAmino Acid Substitution