title: Escherichia coli RNA polymerase and trp repressor interaction with the promoter-operator region of the tryptophan operon of Salmonella typhimurium.
mesh_terms: D001483:Base Sequence; D004269:DNA, Bacterial; D012321:DNA-Directed RNA Polymerases / Q000378:metabolism*; D004926:Escherichia coli / Q000201:enzymology* / Q000235:genetics; D005809:Genes, Regulator; D008745:Methylation; D009876:Operon; D012486:Salmonella typhimurium / Q000235:genetics*; D014364:Tryptophan
chemical_list: D004269:DNA, Bacterial; D014364:Tryptophan; D012321:DNA-Directed RNA Polymerases