title: The internal low-efficiency promoter of the tryptophan operon of Escherichia coli.
mesh_terms: D004926:Escherichia coli; D005809:Genes, Regulator; D005815:Genetic Code; D008967:Molecular Biology; D009876:Operon; D012316:RNA Nucleotidyltransferases; D014364:Tryptophan / Q000096:biosynthesis*
chemical_list: D014364:Tryptophan; D012316:RNA Nucleotidyltransferases