title: Internal deletions in the tryptophan operon of Escherichia coli.
mesh_terms: D002869:Chromosome Aberrations; D002874:Chromosome Mapping; D003090:Coliphages; D004926:Escherichia coli / Q000201:enzymology; D005796:Genes; D005809:Genes, Regulator; D006207:Half-Life; D009154:Mutation; D009876:Operon; D012329:RNA, Bacterial; D012333:RNA, Messenger; D011995:Recombination, Genetic; D014364:Tryptophan; D014367:Tryptophan Synthase / Q000096:biosynthesis
chemical_list: D012329:RNA, Bacterial; D012333:RNA, Messenger; D014364:Tryptophan; D014367:Tryptophan Synthase