title: Regulation of the escherichia coli tryptophan operon by readthrough of UGA termination codons.
mesh_terms: D003062:Codon / Q000378:metabolism*; D004926:Escherichia coli / Q000235:genetics / Q000378:metabolism*; D005786:Gene Expression Regulation; D009154:Mutation; D009876:Operon; D010443:Peptide Chain Termination, Translational; D012333:RNA, Messenger / Q000378:metabolism*; D014158:Transcription, Genetic; D014364:Tryptophan / Q000096:biosynthesis* / Q000235:genetics
chemical_list: D003062:Codon; D012333:RNA, Messenger; D014364:Tryptophan