Repressor ProteinsOperator Regions, GeneticLac RepressorsMolecular Sequence DataTranscription FactorsBase SequenceDNA-Binding ProteinsBacterial ProteinsOperonIsopropyl ThiogalactosideEscherichia coliTranscription, GeneticPromoter Regions, GeneticAmino Acid SequenceClinical ProtocolsProtein BindingViral Regulatory and Accessory ProteinsGene Expression Regulation, BacterialBinding SitesGenes, RegulatorPlasmidsMutationEscherichia coli ProteinsDNA, BacterialDNALac OperonLysogenyCloning, MolecularZinc FingersGenes, BacterialBacteriophage lambdaGene Expression RegulationRecombinant Fusion ProteinsNuclear ProteinsLactoseDNA FootprintingHistone DeacetylasesViral ProteinsEnzyme RepressionTrans-ActivatorsRegulatory Sequences, Nucleic AcidRNA, MessengerTetracyclineElectrophoretic Mobility Shift AssayRestriction MappingColiphagesConsensus SequenceDeoxyribonuclease IProtein Structure, TertiaryCell LineGenes, ReporterTwo-Hybrid System TechniquesCarrier ProteinsProtein BiosynthesisDimerizationProtein ConformationSequence Homology, Amino AcidDrosophila ProteinsMutagenesis, Site-DirectedTransfectionbeta-GalactosidaseSequence AlignmentGene Expression Regulation, FungalBasic Helix-Loop-Helix Transcription FactorsHomeodomain ProteinsGene Expression Regulation, DevelopmentalModels, MolecularRecombinant ProteinsNucleic Acid ConformationCell NucleusKineticsHeLa CellsModels, GeneticSaccharomyces cerevisiaeTranscriptional ActivationSaccharomyces cerevisiae ProteinsRNA-Binding ProteinsGene SilencingSequence Homology, Nucleic AcidDrosophilaModels, BiologicalAlcohol OxidoreductasesPhenotypeTryptophanBacillus subtilisDNA Transposable ElementsGenetic Complementation TestSignal TransductionArabidopsis ProteinsDNA, ViralDNA PrimersMutagenesisInsect ProteinsChloramphenicol O-AcetyltransferaseGenesGene ExpressionStructure-Activity RelationshipCyclic AMP Response Element ModulatorSequence DeletionAllosteric Regulation