Repressor ProteinsOperator Regions, GeneticLac RepressorsTranscription FactorsMolecular Sequence DataDNA-Binding ProteinsBase SequenceBacterial ProteinsTranscription, GeneticPromoter Regions, GeneticOperonEscherichia coliIsopropyl ThiogalactosideProtein BindingAmino Acid SequenceGene Expression Regulation, BacterialBinding SitesViral Regulatory and Accessory ProteinsGenes, RegulatorMutationPlasmidsDNA, BacterialEscherichia coli ProteinsGene Expression RegulationLac OperonZinc FingersLysogenyBacteriophage lambdaNuclear ProteinsDNARecombinant Fusion ProteinsGenes, BacterialCloning, MolecularHistone DeacetylasesDNA FootprintingTrans-ActivatorsLactoseEnzyme RepressionViral ProteinsRegulatory Sequences, Nucleic AcidRNA, MessengerElectrophoretic Mobility Shift AssayGenes, ReporterHomeodomain ProteinsDrosophila ProteinsProtein Structure, TertiaryTetracyclineColiphagesCell LineSequence Homology, Amino AcidConsensus SequenceGene Expression Regulation, DevelopmentalBasic Helix-Loop-Helix Transcription FactorsTwo-Hybrid System Techniquesbeta-GalactosidaseCyclic AMP Response Element ModulatorRestriction MappingDimerizationDeoxyribonuclease ITransfectionGene Expression Regulation, FungalCarrier ProteinsProtein BiosynthesisProtein ConformationMutagenesis, Site-DirectedSequence AlignmentTranscriptional ActivationModels, MolecularDrosophilaCell NucleusKineticsNucleic Acid ConformationHeLa CellsGene SilencingModels, GeneticSaccharomyces cerevisiae ProteinsArabidopsis ProteinsRecombinant ProteinsSaccharomyces cerevisiaeSignal TransductionCarbon DioxideRNA-Binding ProteinsPhenotypeModels, BiologicalKruppel-Like Transcription FactorsTryptophanHelix-Turn-Helix MotifsSequence Homology, Nucleic AcidBacillus subtilisInsect ProteinsMutagenesisDNA PrimersArabidopsisAlcohol OxidoreductasesSequence DeletionDNA Transposable ElementsFungal ProteinsDNA, ViralGenetic Complementation TestGene Expression Regulation, Viral