title: Regulatory mutants of the tryptophan operon of Salmonella typhimurium.
mesh_terms: D002869:Chromosome Aberrations; D002874:Chromosome Mapping; D004171:Diploidy; D004352:Drug Resistance, Microbial; D005246:Feedback; D005796:Genes; D005809:Genes, Regulator; D008040:Genetic Linkage; D009154:Mutation; D009876:Operon; D011995:Recombination, Genetic; D012486:Salmonella typhimurium / Q000201:enzymology*; D014161:Transduction, Genetic; D014364:Tryptophan / Q000096:biosynthesis*
chemical_list: D014364:Tryptophan