title: Evidence for the order promoter-operator-first structural gene in the tryptophan operon of Salmonella.
mesh_terms: D005796:Genes; D005815:Genetic Code; D008967:Molecular Biology; D009154:Mutation; D009876:Operon; D012486:Salmonella typhimurium; D014364:Tryptophan
chemical_list: D014364:Tryptophan