Cyclic AMP Receptor ProteinReceptors, Cyclic AMPCyclic AMPEscherichia coliGene Expression Regulation, BacterialOperonBacterial ProteinsEscherichia coli ProteinsRepressor ProteinsBase SequencePromoter Regions, GeneticDNA-Directed RNA PolymerasesLac OperonDNA, BacterialGalactoseMolecular Sequence DataTranscription, GeneticPectobacterium chrysanthemiGenes, BacterialDNA Footprintingbeta-GalactosidaseBinding SitesPlasmidsMutationRegulonProtein BindingCarrier ProteinsLactoseSigma FactorDNA-Binding ProteinsAmino Acid SequenceGenes, RegulatorElectrophoretic Mobility Shift AssayMutagenesis, InsertionalAllosteric RegulationTranscription FactorsProtein ConformationGene DeletionAraC Transcription FactorTrans-ActivatorsArabinoseCloning, MolecularAnaerobiosisDictyosteliumAdenylate CyclaseKineticsTranscriptional ActivationModels, MolecularDNAElectrophoresis, Polyacrylamide GelGlucoseSalmonella typhimuriumGene Expression RegulationRestriction MappingBucladesineGenetic Complementation TestLac Repressors