title: Unimpaired repressibility of transcription of the operator-proximal eighth of the first (E) gene of the tryptophan operon in Escherichia coli.
mesh_terms: D002874:Chromosome Mapping; D004794:Enzyme Repression; D004926:Escherichia coli / Q000032:analysis*; D005815:Genetic Code; D012333:RNA, Messenger / Q000032:analysis* / Q000096:biosynthesis; D014316:Tritium; D014364:Tryptophan / Q000378:metabolism*
chemical_list: D012333:RNA, Messenger; D014316:Tritium; D014364:Tryptophan