title: Biosynthesis of the modified nucleoside Q in transfer RNA.
abstract: During biosynthesis of the modified nucleoside Q, 7-(4,5-DIHYDROXYL-1-1-CYCLOPENTEN-3-YL-AMINOMETHYL)-7-DEAZAGUANOSINE, IN TRNA, the carbon atom at position 8 in precursor molecule guanine was expelled together with the nitrogen atom N-7 in a fashion similar to that in the biosynthesis of the nucleoside antibiotic toyocamycin.
mesh_terms: D002855:Chromatography, Thin Layer; D006151:Guanosine / Q000031:analogs & derivatives* / Q000378:metabolism; D009154:Mutation; D012343:RNA, Transfer / Q000378:metabolism*
chemical_list: D006151:Guanosine; D012343:RNA, Transfer