title: The tertiary structure of transfer ribonucleic acid investigated by a chemical modification technique.
mesh_terms: D004926:Escherichia coli; D007094:Imides; D008274:Magnesium / Q000494:pharmacology; D008722:Methods; D008967:Molecular Biology; D009711:Nucleotides; D012329:RNA, Bacterial; D012343:RNA, Transfer / Q000032:analysis*
chemical_list: D007094:Imides; D009711:Nucleotides; D012329:RNA, Bacterial; D012343:RNA, Transfer; D008274:Magnesium