Lac RepressorsRepressor ProteinsLac OperonOperator Regions, GeneticIsopropyl ThiogalactosideLactoseEscherichia coliThiogalactosidesGalactosidasesNitrophenylgalactosidesDNA, BacterialTranscription FactorsBase SequenceOperonBacterial ProteinsGenes, RegulatorFacilitated DiffusionPlasmidsLactose FactorsEscherichia coli ProteinsMolecular Sequence DataNucleic Acid ConformationProtein BindingEnzyme Repressionbeta-GalactosidaseBinding SitesDNA-Binding ProteinsGene Expression Regulation, BacterialTranscription, GeneticPromoter Regions, GeneticAmino Acid SequenceMutationViral Regulatory and Accessory ProteinsProtein ConformationDNAKineticsGenes, BacterialGenetic CodeGlycosidesMagnetic Resonance SpectroscopyDNA, SuperhelicalRecombinant Fusion ProteinsMacromolecular SubstancesT-PhagesGene Expression RegulationCloning, MolecularDNA-Directed RNA PolymerasesGenesCircular DichroismDeoxyribonuclease IDNA Restriction EnzymesDNA, RecombinantViral ProteinsEnzyme InductionModels, MolecularModels, GeneticRestriction MappingStructure-Activity RelationshipCell LineMutagenesis, Site-DirectedLysogenyElectrophoresis, Polyacrylamide GelTrypsinRecombinant ProteinsDNA, ViralBase CompositionBacteriophage lambdaGenetic VectorsAmino AcidsKluyveromycesSpectrometry, FluorescenceCyclic AMP Response Element ModulatorSpectrophotometry, UltravioletColiphagesNuclear ProteinsPeptide FragmentsZinc FingersGalactoseHistone DeacetylasesHomeodomain ProteinsRNA, MessengerTrans-ActivatorsGenes, ReporterCyclic AMP Receptor ProteinBacteriophage mu