Conformation of the hypermodified purine queuine: Substrate for the enzyme transfer RNA—guanine transglycosylase
作者:
Hanna Sierzputowska‐Gracz,
Paul F. Agris,
Jon R. Katze,
期刊:
Magnetic Resonance in Chemistry
(WILEY Available online 1988)
卷期:
Volume 26,
issue 1
页码: 4-7
ISSN:0749-1581
年代: 1988
DOI:10.1002/mrc.1260260103
出版商: John Wiley&Sons, Ltd.
关键词: Queuine;Hypermodified purine;Structure and conformation
数据来源: WILEY
摘要:
AbstractThe hypermodified nucleotidyl purine queuine [7‐(3,4‐trans‐4,5‐cis‐dihydroxycyclopent‐1‐en‐3‐ylaminomethyl)‐7‐deazaguanine] is a substrate for transfer ribonucleic acid (tRNA) enzymes replacing guanine at nucleotide position 34 of tRNAs for the amino acids aspartic acid, asparagine, bistidine and tyrosine. The structure and conformation of native queuine was studied by one‐dimensional13C and1H NMR spectroscopy and by two‐dimensional NMR spectroscopy (COSY and NOESY). The structure in solution was found to be the 3,4‐trans‐4,5‐cis‐dihydroxycyclopent‐1‐ene form. The plane of the cyclopentene ring is probably perpendicular
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