Allosteric RegulationAllosteric SiteBinding SitesProtein ConformationKineticsMolecular Sequence DataAmino Acid SequenceProtein BindingModels, MolecularProtein Structure, TertiaryMutationGenes, RegulatorSignal TransductionTranscription FactorsBacterial ProteinsGene Expression Regulation, BacterialLigandsCystic Fibrosis Transmembrane Conductance RegulatorEscherichia coliBase SequenceCrystallography, X-RayModels, BiologicalN-MethylscopolamineCell LineRepressor ProteinsStructure-Activity RelationshipGallamine TriethiodideMutagenesis, Site-DirectedTranscription, GeneticAspartate CarbamoyltransferaseDNA-Binding ProteinsReceptor, Muscarinic M1