Regulatory Sequences, Nucleic AcidRNA, BacterialUridineTritiumCarbon IsotopesPhosphorus IsotopesUracilBase SequenceCentrifugation, Density GradientGenetics, MicrobialRNARNA, TransferUracil NucleotidesEscherichia coliRNA, RibosomalMolecular Sequence DataRNA, MessengerRibonucleasesAmino Acyl-tRNA SynthetasesGenes, RegulatorPromoter Regions, GeneticTranscription, GeneticChloramphenicolDactinomycinRNA NucleotidyltransferasesMutationRifampinCell-Free SystemRibosomesEnhancer Elements, GeneticLeucineGene Expression RegulationDNA, BacterialChromatographyRNA, ViralBacterial ProteinsGenesGenetic CodeElectrophoresis, DiscDNAOrotic AcidCytosine NucleotidesSucroseNucleic Acid DenaturationTranscription FactorsColiphagesCulture MediaDNA-Directed RNA PolymerasesNucleic Acid HybridizationCulture TechniquesBinding SitesBacillus subtilisTemperatureSporesRegulatory Elements, TranscriptionalGalactosidasesProtein BiosynthesisPolynucleotidesEnzyme RepressionAcrylatesAmino AcidsMethioninePhenylalanineCarbon RadioisotopesNucleotidesAdenineCloning, MolecularVirus CultivationPuromycinHot TemperatureDNA-Binding ProteinsIsoleucineSpecies SpecificityConserved SequencePolyribosomesChromatography, PaperAmino Acid SequenceChromatography, DEAE-CelluloseChemical PrecipitationGenes, ReporterValine-tRNA LigaseNitrosoguanidinesSequence Analysis, DNACell LineMolecular WeightGene Expression Regulation, DevelopmentalCell NucleusElectrophoresisTime FactorsSequence Homology, Nucleic AcidOperonPlasmidsElectrophoresis, Polyacrylamide GelHybridization, GeneticSaccharomycesSulfur IsotopesL Cells (Cell Line)Centrifugation, ZonalMagnesiumChromosome Mapping