Regulatory Sequences, Nucleic AcidRNA, BacterialUridineTritiumCarbon IsotopesPhosphorus IsotopesUracilCentrifugation, Density GradientGenetics, MicrobialBase SequenceRNARNA, TransferUracil NucleotidesRNA, RibosomalRNA, MessengerRibonucleasesEscherichia coliAmino Acyl-tRNA SynthetasesGenes, RegulatorMolecular Sequence DataPromoter Regions, GeneticTranscription, GeneticChloramphenicolDactinomycinRNA NucleotidyltransferasesRifampinEnhancer Elements, GeneticCell-Free SystemRibosomesLeucineMutationRNA, ViralChromatographyGene Expression RegulationElectrophoresis, DiscOrotic AcidGenetic CodeGenesCytosine NucleotidesSucroseDNAColiphagesNucleic Acid DenaturationDNA, BacterialDNA-Directed RNA PolymerasesTranscription FactorsCulture TechniquesBacterial ProteinsNucleic Acid HybridizationBinding SitesSporesBacillus subtilisGalactosidasesRegulatory Elements, TranscriptionalPolynucleotidesProtein BiosynthesisTemperatureCulture MediaEnzyme RepressionAcrylatesMethioninePhenylalanineVirus CultivationPuromycinCarbon RadioisotopesAdenineNucleotidesAmino AcidsIsoleucinePolyribosomesValine-tRNA LigaseChromatography, DEAE-CelluloseChemical PrecipitationDNA-Binding ProteinsGenes, ReporterNitrosoguanidinesChromatography, PaperHot TemperatureElectrophoresisCell LineCell NucleusConserved SequenceCentrifugation, ZonalMolecular WeightSulfur IsotopesL Cells (Cell Line)Cloning, MolecularHybridization, GeneticOperonGene Expression Regulation, DevelopmentalElectrophoresis, Polyacrylamide GelMagnesiumPhosphorus RadioisotopesSaccharomycesCentrifugationPlasmidsMice, TransgenicIn Situ HybridizationPeptide BiosynthesisThymine