title: Letter to the editor: Characterization of mutations in the tryptophan operon of Escherichia coli by RNA nucleotide sequencing.
mesh_terms: D001483:Base Sequence; D002234:Carbodiimides; D002482:Cellulose; D002848:Chromatography, DEAE-Cellulose; D002855:Chromatography, Thin Layer; D002874:Chromosome Mapping; D003062:Codon; D004269:DNA, Bacterial / Q000032:analysis / Q000378:metabolism; D003854:Deoxyribonucleotides / Q000032:analysis; D004586:Electrophoresis; D004926:Escherichia coli / Q000032:analysis* / Q000378:metabolism; D009154:Mutation; D009693:Nucleic Acid Hybridization; D009876:Operon; D012329:RNA, Bacterial; D012333:RNA, Messenger; D012260:Ribonucleases; D014364:Tryptophan / Q000096:biosynthesis*
chemical_list: D002234:Carbodiimides; D003062:Codon; D004269:DNA, Bacterial; D003854:Deoxyribonucleotides; D012329:RNA, Bacterial; D012333:RNA, Messenger; D014364:Tryptophan; D002482:Cellulose; D012260:Ribonucleases