Repressor ProteinsLac RepressorsOperator Regions, GeneticTranscription FactorsDNA-Binding ProteinsMolecular Sequence DataBase SequencePromoter Regions, GeneticTranscription, GeneticBacterial ProteinsCarbon DioxideOperonEscherichia coliBinding SitesProtein BindingGene Expression Regulation, BacterialViral Regulatory and Accessory ProteinsAmino Acid SequenceMutationGenes, RegulatorGene Expression RegulationPlasmidsCyclic AMP Response Element ModulatorNuclear ProteinsLac OperonDNA, BacterialCarbon MonoxideZinc FingersLysogenyHistone DeacetylasesHomeodomain ProteinsRecombinant Fusion ProteinsBacteriophage lambdaEscherichia coli ProteinsTrans-ActivatorsGene Expression Regulation, DevelopmentalIsopropyl ThiogalactosideKruppel-Like Transcription FactorsDrosophila ProteinsGenes, ReporterCloning, MolecularHelix-Turn-Helix MotifsDNAGenes, BacterialBasic Helix-Loop-Helix Transcription FactorsDNA FootprintingRNA, MessengerCell LineTranscriptional ActivationSequence Homology, Amino AcidElectrophoretic Mobility Shift AssayProtein Structure, Tertiarybeta-GalactosidaseRegulatory Sequences, Nucleic AcidViral ProteinsEnzyme RepressionDrosophilaTransfectionChromatin ImmunoprecipitationArabidopsis ProteinsSignal TransductionGene Expression Regulation, FungalLactoseTwo-Hybrid System TechniquesGene SilencingColiphagesCobaltKineticsDimerizationSaccharomyces cerevisiae ProteinsRegulonSequence AlignmentConsensus SequenceModels, BiologicalArabidopsisModels, GeneticPhenotypeGene Expression Regulation, PlantDNA PrimersMutagenesis, Site-DirectedProtein ConformationHeLa CellsTetracyclineModels, MolecularResponse ElementsCarrier ProteinsCell NucleusCo-Repressor ProteinsSaccharomyces cerevisiaeDown-RegulationProtein BiosynthesisRec A RecombinasesCorynebacterium diphtheriaeBasic-Leucine Zipper Transcription FactorsHistone Deacetylase 1Cell DifferentiationFlowersBacteriophage muFungal ProteinsNucleic Acid Conformation