Lac OperonOperonLactoseLac RepressorsGene Expression ProfilingGalactosidasesGene ExpressionGene Expression RegulationEscherichia coliGene Expression Regulation, BacterialIsopropyl Thiogalactosidebeta-GalactosidaseEnzyme RepressionBase SequenceTranscription, GeneticGenes, BacterialBacterial ProteinsMolecular Sequence DataNitrophenylgalactosidesPromoter Regions, GeneticRNA, MessengerMutationMolecular BiologyOligonucleotide Array Sequence AnalysisGenes, RegulatorRepressor ProteinsEscherichia coli ProteinsDNA, BacterialrRNA OperonOperator Regions, GeneticCyclic AMP Receptor ProteinThiogalactosidesRNA, BacterialTranscription FactorsCloning, MolecularPlasmidsGene Expression Regulation, DevelopmentalGenetics, MicrobialChromosomes, BacterialGenesReverse Transcriptase Polymerase Chain ReactionSalmonella typhimuriumEnzyme InductionModels, GeneticBacteriophage muAmino Acid SequenceGene Expression Regulation, NeoplasticGene Expression Regulation, EnzymologicGalactoseTransduction, GeneticMembrane Transport ProteinsDNA-Binding ProteinsChromosome MappingGene Expression Regulation, PlantDNA Transposable ElementsColiphagesGenetic CodeDNA, RecombinantPhenotypeGlycosidesGene Expression Regulation, ViralNucleic Acid ConformationDNA-Directed RNA PolymerasesSpecies SpecificityGenes, ReporterSignal TransductionGlucoseCell LineSequence Analysis, DNAStochastic ProcessesBacillus subtilisRestriction MappingCluster AnalysisCells, CulturedGene Expression Regulation, FungalModels, BiologicalMultigene FamilyTrans-ActivatorsCulture MediaBlotting, NorthernTranscriptomeDNA PrimersKineticsGenetic Complementation TestBinding SitesCyclic AMPPolymerase Chain ReactionMutagenesis, InsertionalRecombination, GeneticMicroarray AnalysisProtein BindingTranscriptional ActivationUp-RegulationGene DeletionRegulatory Sequences, Nucleic AcidTransfectionSequence Homology, Amino AcidLactose FactorsRNAGene Regulatory Networks