title: Ammonium ions as the source of nitrogen for tryptophan biosynthesis in whole cells of Escherichia coli.
mesh_terms: D004926:Escherichia coli / Q000254:growth & development / Q000378:metabolism*; D005947:Glucose / Q000378:metabolism; D005973:Glutamine / Q000378:metabolism; D006863:Hydrogen-Ion Concentration; D009154:Mutation; D000644:Quaternary Ammonium Compounds / Q000378:metabolism*; D014364:Tryptophan / Q000096:biosynthesis*; D062367:ortho-Aminobenzoates / Q000378:metabolism
chemical_list: D000644:Quaternary Ammonium Compounds; D062367:ortho-Aminobenzoates; D005973:Glutamine; D014364:Tryptophan; D005947:Glucose