title: Comparative small-angle x-ray scattering studies on unacylated, acylated and cross-linked Escherichia coli transfer RNA I  Val .
mesh_terms: D000215:Acylation; D002848:Chromatography, DEAE-Cellulose; D004926:Escherichia coli / Q000528:radiation effects; D008274:Magnesium; D008961:Models, Structural; D008970:Molecular Weight; D009690:Nucleic Acid Conformation; D012329:RNA, Bacterial; D012343:RNA, Transfer; D011830:Radiation Effects; D014466:Ultraviolet Rays; D014961:X-Ray Diffraction
chemical_list: D012329:RNA, Bacterial; D012343:RNA, Transfer; D008274:Magnesium