title: The use of conformational changes to purify tryptophan tRNA from Escherichia coli.
mesh_terms: D055598:Chemical Phenomena; D002621:Chemistry; D002848:Chromatography, DEAE-Cellulose; D002850:Chromatography, Gel; D002852:Chromatography, Ion Exchange; D004926:Escherichia coli / Q000032:analysis*; D008274:Magnesium; D008722:Methods; D012329:RNA, Bacterial / Q000302:isolation & purification; D012343:RNA, Transfer / Q000302:isolation & purification*; D014316:Tritium; D014364:Tryptophan
chemical_list: D012329:RNA, Bacterial; D014316:Tritium; D014364:Tryptophan; D012343:RNA, Transfer; D008274:Magnesium