Repressor ProteinsOperator Regions, GeneticLac RepressorsMolecular Sequence DataTranscription FactorsDNA-Binding ProteinsBase SequenceBacterial ProteinsTranscription, GeneticOperonPromoter Regions, GeneticEscherichia coliIsopropyl ThiogalactosideProtein BindingAmino Acid SequenceBinding SitesViral Regulatory and Accessory ProteinsGene Expression Regulation, BacterialGenes, RegulatorMutationPlasmidsEscherichia coli ProteinsDNA, BacterialNuclear ProteinsRecombinant Fusion ProteinsDNAGene Expression RegulationZinc FingersCloning, MolecularLysogenyLac OperonGenes, BacterialBacteriophage lambdaHistone DeacetylasesProtein Structure, TertiaryLactoseTrans-ActivatorsDNA FootprintingViral ProteinsCell LineTwo-Hybrid System TechniquesEnzyme RepressionRNA, MessengerRegulatory Sequences, Nucleic AcidCarrier ProteinsElectrophoretic Mobility Shift AssayTetracyclineDrosophila ProteinsConsensus SequenceTransfectionGenes, ReporterRestriction MappingDimerizationSequence Homology, Amino AcidColiphagesDeoxyribonuclease IHeLa CellsProtein BiosynthesisGene Expression Regulation, FungalMutagenesis, Site-DirectedProtein ConformationSequence AlignmentHomeodomain ProteinsBasic Helix-Loop-Helix Transcription FactorsSaccharomyces cerevisiae Proteinsbeta-GalactosidaseGene Expression Regulation, DevelopmentalCell NucleusModels, MolecularSignal TransductionSaccharomyces cerevisiaeTranscriptional ActivationRecombinant ProteinsNucleic Acid ConformationGene SilencingRNA-Binding ProteinsModels, BiologicalModels, GeneticDrosophilaKineticsAmino Acid MotifsAlcohol OxidoreductasesSequence Homology, Nucleic AcidMutagenesisArabidopsis ProteinsGenetic Complementation TestInsect ProteinsSequence DeletionBacillus subtilisPhenotypeCells, CulturedTryptophanDNA Transposable ElementsDNA, ViralDNA PrimersCOS CellsMacromolecular SubstancesFungal ProteinsStructure-Activity RelationshipChloramphenicol O-Acetyltransferase