title: Tryptophanyl transfer RNA synthetase and expression of the tryptophan operon in the trpS mutants of Escherichia coli.
mesh_terms: D002874:Chromosome Mapping; D003090:Coliphages / Q000378:metabolism; D004279:DNA, Viral / Q000032:analysis; D004794:Enzyme Repression; D004926:Escherichia coli / Q000201:enzymology*; D005796:Genes; D008025:Ligases / Q000096:biosynthesis*; D009154:Mutation; D009876:Operon; D012333:RNA, Messenger / Q000032:analysis; D012343:RNA, Transfer / Q000032:analysis / Q000096:biosynthesis; D014161:Transduction, Genetic; D014316:Tritium; D014364:Tryptophan / Q000032:analysis / Q000096:biosynthesis*; D062367:ortho-Aminobenzoates / Q000032:analysis
chemical_list: D004279:DNA, Viral; D012333:RNA, Messenger; D062367:ortho-Aminobenzoates; D014316:Tritium; D014364:Tryptophan; D012343:RNA, Transfer; D008025:Ligases