Calculation of the dependence of homo- and heteronuclear 3J and 2J scalar couplings for the determination of the 2'-hydroxy conformation in RNA.
Calculation of the dependence of homo- and heteronuclear 3J and 2J scalar couplings for the determination of the 2'-hydroxy conformation in RNA.
复制标题
计算同核和异核 3J 和 2J 标量耦合的依赖性,以确定 RNA 中的 2-羟基构象。
DOI:
10.1002/anie.200602583
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发表时间:
2006
期刊:
影响因子:
--
通讯作者:
Carlomagno,Teresa
中科院分区:
文献类型:
--
作者:
Fohrer,Jorg;Reinscheid,Uwe;Hennig,Mirko;Carlomagno,Teresa
The presence or absence of the 2’-hydroxy group within the pentose sugar accounts for the major difference between RNA and DNA. In canonical environments, the pentose sugars of RNA and DNA adopt C3’-endo and C2’-endo conformations, respectively, leading to distinct differences in the hydration and structural stability.[1] In addition to the conformational preferences imposed by the 2’-OH group, its vital role in RNA catalysis has been studied extensively for self-splicing viral ribozymes, type II introns and spliceosomal RNAs.[2–4] Thus, conformational studies of 2’-hydroxy groups provide unique insights into the structural features of RNA and shed light on the structure–activity relationship of RNA catalytic processes.Recently, we reported the assignments and conformational analysis of the 2’-hydroxy groups in the 30-mer HIV-2 transactivation response element (TAR) RNA [5] in solution at low temperature,[6, 7] while another study from Ying and Bax focuses on the conformational analysis of the 2’-hydroxy groups in the RNA hairpin derived from the helix 35 of the 23S ribosomal RNA.[8] Molecular dynamics (MD) simulations of an RNA hairpin previously identified three preferred orientations for the 2’-hydroxy proton when the ribose sugar adopts the C3’-endo pucker:[9] a) toward O3’, stabilized by attractive electrostatic interaction with the phosphate backbone (O3’domain), b) toward O4’, stabilized by intra-ribose electrostatic interactions (O4’domain) and c) toward the base, stabilized by interactions with the N3 or O2 atom of the attached base (base domain). In our previous study we reported preferences for the 2’-OH groups of canonical A-
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影响因子:
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