title: Termination of transcription in vitro in the Escherichia coli tryptophan operon leader region.
mesh_terms: D001483:Base Sequence; D003090:Coliphages / Q000378:metabolism; D012321:DNA-Directed RNA Polymerases / Q000378:metabolism; D004926:Escherichia coli / Q000378:metabolism*; D009843:Oligoribonucleotides / Q000032:analysis; D009876:Operon; D012329:RNA, Bacterial / Q000378:metabolism; D012260:Ribonucleases; D014158:Transcription, Genetic; D014364:Tryptophan / Q000096:biosynthesis*
chemical_list: D009843:Oligoribonucleotides; D012329:RNA, Bacterial; D014364:Tryptophan; D012321:DNA-Directed RNA Polymerases; D012260:Ribonucleases