title: Isolation of the novel regulatory mutants of the tryptophan biosynthetic system in Escherichia coli.
mesh_terms: D002874:Chromosome Mapping; D004794:Enzyme Repression; D004926:Escherichia coli; D005808:Genes, Recessive; D005809:Genes, Regulator; D008025:Ligases / Q000378:metabolism; D012343:RNA, Transfer; D014364:Tryptophan / Q000096:biosynthesis
chemical_list: D014364:Tryptophan; D012343:RNA, Transfer; D008025:Ligases