共 34 条
NUCLEAR MAGNETIC-RESONANCE STUDIES ON TRANSFER RIBONUCLEIC-ACID - ASSIGNMENT OF AU TERTIARY RESONANCES
被引:32
作者:
HURD, RE
[1
]
REID, BR
[1
]
机构:
[1] UNIV CALIF RIVERSIDE,DEPT BIOCHEM,RIVERSIDE,CA 92521
关键词:
D O I:
10.1021/bi00585a025
中图分类号:
Q5 [生物化学];
Q7 [分子生物学];
学科分类号:
071010 ;
081704 ;
摘要:
The hydrogen-bonded ring NH nuclear magnetic resonance (NMR) spectra of several transfer ribonucleic acid (tRNA) species have been examined with particular emphasis on the extreme low-field portion. Between -13.8 and -15 ppm there are two extra resonances which are not derived from cloverleaf base pairs. A combined approach involving un-dermodified tRNAs, chemical modification, and hairpin fragment studies has assigned the T54-A58 resonance at -14.3 ppm in yeast tRNAPhe and Escherichia coli tRNA1Val; the U8-A14 resonance has been assigned at -14.3 ppm, and the s4U8-A14 resonance in bacterial tRNAs has been assigned at -14.9 ppm. The T54-A58 resonance shifts between -14.3 and -13.8 ppm depending on the surrounding nucleotide sequence in the ribothymidine loop. © 1979, American Chemical Society. All rights reserved.
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页码:4005 / 4011
页数:7
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