Repressor ProteinsOperator Regions, GeneticLac RepressorsMolecular Sequence DataBase SequenceTranscription FactorsDNA-Binding ProteinsAmino Acid SequenceBacterial ProteinsTranscription, GeneticOperonEscherichia coliProtein BindingPromoter Regions, GeneticIsopropyl ThiogalactosideBinding SitesMutationGene Expression Regulation, BacterialViral Regulatory and Accessory ProteinsNuclear Localization SignalsPlasmidsRecombinant Fusion ProteinsGenes, RegulatorCell NucleusCloning, MolecularNuclear ProteinsEscherichia coli ProteinsDNA, BacterialDNAGene Expression RegulationRNA, MessengerZinc FingersCell LineProtein Structure, TertiaryGenes, BacterialLac OperonLysogenyBacteriophage lambdaSequence Homology, Amino AcidCarrier ProteinsTransfectionViral ProteinsHeLa CellsTrans-ActivatorsDrosophila ProteinsTwo-Hybrid System TechniquesLactoseHistone DeacetylasesDNA FootprintingProtein TransportSequence AlignmentEnzyme RepressionRegulatory Sequences, Nucleic AcidMutagenesis, Site-DirectedRestriction MappingGenes, ReporterSaccharomyces cerevisiaeConsensus SequenceSubcellular FractionsCytoplasmTetracyclineElectrophoretic Mobility Shift AssaySaccharomyces cerevisiae ProteinsProtein BiosynthesisRecombinant ProteinsGene Expression Regulation, DevelopmentalDimerizationSignal TransductionRNA-Binding ProteinsProtein ConformationCOS CellsColiphagesGene Expression Regulation, FungalBlotting, Westernbeta-GalactosidaseCells, CulturedDeoxyribonuclease IDrosophilaModels, BiologicalHomeodomain ProteinsKineticsModels, MolecularAmino Acid MotifsGene ExpressionSequence DeletionDNA PrimersSound LocalizationGreen Fluorescent ProteinsBasic Helix-Loop-Helix Transcription FactorsMicroscopy, FluorescenceImmunohistochemistryPhenotypeFungal ProteinsPhosphorylationArabidopsis ProteinsNucleic Acid ConformationTranscriptional ActivationMutagenesisPhosphoproteinsModels, Genetic