Operator Regions, GeneticRepressor ProteinsEscherichia coliProtein BiosynthesisBase SequenceMolecular Sequence DataOperonBacterial ProteinsKineticsMutationProtein Synthesis InhibitorsDNARNA, MessengerStereoisomerismMolecular StructureTranscription, GeneticDNA, BacterialLac OperonLac RepressorsCells, CulturedCycloheximideDNA ReplicationAmino Acid SequencePlasmidsGene Expression Regulation, BacterialTime FactorsCyclizationCell LineTritiumLeucineBinding SitesGenes, RegulatorProtein BindingRNAViral ProteinsLiverCarbon IsotopesGenes, BacterialViral Regulatory and Accessory ProteinsTranscription FactorsCell-Free SystemDactinomycinNucleic Acid ConformationPromoter Regions, GeneticMagnetic Resonance SpectroscopyChemistry Techniques, SyntheticIsopropyl ThiogalactosideAmino AcidsComputer TerminalsEscherichia coli ProteinsRadiation ProtectionDNA-Binding ProteinsCloning, MolecularStructure-Activity RelationshipColiphagesPuromycinThymidineROC CurvePeptide BiosynthesisDNA, ViralEnzyme RepressionGene Expression RegulationRNA, BacterialFluoroscopyElectrophoresis, Polyacrylamide GelChloramphenicolChemistry, OrganicCell DivisionRadiation MonitoringUridineRNA, ViralTemperatureGenesOccupational ExposureModels, MolecularReproducibility of ResultsMolecular WeightCatalysisCulture MediaCarbon RadioisotopesSolid-Phase Synthesis TechniquesEnzyme InductionIndicators and ReagentsBacillus subtilisBacteriophage lambdaRadiography, InterventionalGlucoseTryptophanOligonucleotidesDNA FootprintingFibroblastsModels, BiologicalMethionineRecombinant ProteinsPolyribosomesPhenylalanineSaccharomyces cerevisiaeLearning CurveAutoradiographySensitivity and Specificity