RNA, BacterialRNAUridineRNA, RibosomalTritiumRNA, ViralCarbon IsotopesPhosphorus IsotopesRNA, TransferUracilCentrifugation, Density GradientGenetics, MicrobialRNA, MessengerRNA, Small InterferingRibonucleasesUracil NucleotidesDNA-Directed RNA PolymerasesEscherichia coliAmino Acyl-tRNA SynthetasesDactinomycinChloramphenicolRNA NucleotidyltransferasesRNA EditingRNA SplicingRNA VirusesRibosomesCell-Free SystemRifampinLeucineChromatographyGenetic CodeNucleic Acid DenaturationElectrophoresis, DiscOrotic AcidCytosine NucleotidesSucroseColiphagesCulture TechniquesMutationNucleic Acid HybridizationPolynucleotidesRNA InterferenceRNA, Double-StrandedSporesGalactosidasesDNA, BacterialProtein BiosynthesisTemperatureBacterial ProteinsRNA, FungalBacillus subtilisCulture MediaBase SequenceNucleotidesPolyribosomesNucleic Acid ConformationEnzyme RepressionMethionineAcrylatesAdeninePuromycinPhenylalanineVirus CultivationAmino AcidsCarbon RadioisotopesIsoleucineChromatography, DEAE-CelluloseValine-tRNA LigaseChemical PrecipitationHot TemperatureRNA, CatalyticChromatography, PaperElectrophoresisNitrosoguanidinesTemplates, GeneticRNA FoldingMolecular WeightMagnesiumDNACentrifugation, ZonalRNA Polymerase IIPhosphorus RadioisotopesOligoribonucleotidesSulfur IsotopesHybridization, GeneticGenesElectrophoresis, Polyacrylamide GelRNA StabilityPeptide BiosynthesisSaccharomycesRNA Processing, Post-TranscriptionalRNA, NeoplasmCentrifugationThymineThymidineValineTime FactorsElectrophoresis, PaperGuanine NucleotidesSpectrophotometry