title: Operator and promoter are separate in the tryptophan operon in Salmonella typhimurium.
mesh_terms: D002250:Carbon Radioisotopes; D002499:Centrifugation, Density Gradient; D002874:Chromosome Mapping; D005796:Genes; D007700:Kinetics; D009154:Mutation; D009693:Nucleic Acid Hybridization; D009876:Operon; D012333:RNA, Messenger / Q000032:analysis / Q000096:biosynthesis; D011995:Recombination, Genetic; D012293:Rifampin / Q000494:pharmacology; D012486:Salmonella typhimurium / Q000378:metabolism*; D014158:Transcription, Genetic / Q000187:drug effects; D014316:Tritium; D014364:Tryptophan / Q000378:metabolism*; D014367:Tryptophan Synthase / Q000096:biosynthesis
chemical_list: D002250:Carbon Radioisotopes; D012333:RNA, Messenger; D014316:Tritium; D014364:Tryptophan; D014367:Tryptophan Synthase; D012293:Rifampin