Repressor ProteinsOperator Regions, GeneticLac RepressorsMolecular Sequence DataTranscription FactorsProtein BindingDNA-Binding ProteinsBase SequenceBinding SitesPromoter Regions, GeneticAmino Acid SequenceTranscription, GeneticBacterial ProteinsEscherichia coliMutationOperonGene Expression Regulation, BacterialViral Regulatory and Accessory ProteinsProtein Structure, TertiaryNuclear ProteinsGene Expression RegulationRecombinant Fusion ProteinsPlasmidsCell LineGenes, RegulatorDNASequence Homology, Amino AcidZinc FingersCloning, MolecularTrans-ActivatorsCyclic AMP Response Element ModulatorDNA, BacterialModels, MolecularEscherichia coli ProteinsHomeodomain ProteinsTransfectionLac OperonCarrier ProteinsRNA, MessengerHistone DeacetylasesDrosophila ProteinsRecombinant ProteinsDNA FootprintingKineticsGenes, ReporterLysogenyElectrophoretic Mobility Shift AssayProtein ConformationGene Expression Regulation, DevelopmentalTwo-Hybrid System TechniquesBacteriophage lambdaHeLa CellsDimerizationSignal TransductionRegulatory Sequences, Nucleic AcidSequence AlignmentMutagenesis, Site-DirectedBinding, CompetitiveKruppel-Like Transcription FactorsHelix-Turn-Helix MotifsViral ProteinsIsopropyl ThiogalactosideGenes, BacterialBasic Helix-Loop-Helix Transcription FactorsSaccharomyces cerevisiae ProteinsRNA-Binding ProteinsDNA PrimersDrosophilabeta-GalactosidaseConsensus SequenceCell NucleusChromatin ImmunoprecipitationAmino Acid MotifsSaccharomyces cerevisiaeNucleic Acid ConformationModels, BiologicalTranscriptional ActivationGene Expression Regulation, FungalCells, CulturedGene SilencingArabidopsis ProteinsResponse ElementsEnzyme RepressionFungal ProteinsProtein BiosynthesisMutagenesisSequence DeletionEnhancer Elements, GeneticConserved SequenceCOS CellsModels, GeneticCrystallography, X-RayLactoseColiphagesBlotting, WesternDown-RegulationPhenotypePhosphoproteinsNerve Tissue ProteinsPhosphorylation