LactoseLac OperonOperonbeta-GalactosidaseLac RepressorsGalactosidasesEscherichia coliIsopropyl ThiogalactosideEnzyme RepressionGene Expression Regulation, BacterialGenes, BacterialNitrophenylgalactosidesBacterial ProteinsMolecular BiologyBase SequenceEscherichia coli ProteinsDNA, BacterialrRNA OperonGenes, RegulatorMutationTranscription, GeneticMolecular Sequence DataCyclic AMP Receptor ProteinOperator Regions, GeneticThiogalactosidesRepressor ProteinsRNA, BacterialGenetics, MicrobialChromosomes, BacterialBacteriophage muPromoter Regions, GeneticCloning, MolecularSalmonella typhimuriumGalactoseGenesPlasmidsEnzyme InductionMembrane Transport ProteinsTransduction, GeneticColiphagesGenetic CodeGlycosidesDNA Transposable ElementsDNA, RecombinantChromosome MappingDNA-Directed RNA PolymerasesAmino Acid SequenceModels, GeneticNucleic Acid ConformationBacillus subtilisStochastic ProcessesGlucoseRNA, MessengerCulture MediaSpecies SpecificityRestriction MappingLactose FactorsGenetic Complementation TestRecombination, GeneticCyclic AMPGene Expression RegulationMutagenesis, InsertionalPhenotypeKineticsSequence Analysis, DNAArabinoseTranscription FactorsKluyveromycesMultigene FamilyDNA Restriction EnzymesRegulonOpen Reading FramesConjugation, GeneticSequence Homology, Nucleic AcidGenome, BacterialLaccaseModels, BiologicalSequence Homology, Amino AcidSigma FactorTerminator Regions, GeneticDNA-Binding ProteinsF FactorGene DeletionArtificial Gene FusionTryptophan