title: [Genetic control of amino acid synthesis system in bacteria--regulation mechanism of tryptophan operon].
mesh_terms: D000604:Amino Acyl-tRNA Synthetases / Q000378:metabolism; D001419:Bacteria / Q000378:metabolism; D004926:Escherichia coli / Q000166:cytology; D005246:Feedback; D005809:Genes, Regulator; D005815:Genetic Code; D005827:Genetics, Microbial; D008967:Molecular Biology; D009154:Mutation; D009876:Operon; D012333:RNA, Messenger / Q000096:biosynthesis; D013489:Suppression, Genetic; D013696:Temperature; D014364:Tryptophan / Q000096:biosynthesis*
chemical_list: D012333:RNA, Messenger; D014364:Tryptophan; D000604:Amino Acyl-tRNA Synthetases