Determination of the conformation of the 2'OH group in RNA by NMR spectroscopy and DFT calculations.
Determination of the conformation of the 2'OH group in RNA by NMR spectroscopy and DFT calculations.
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通过核磁共振波谱和 DFT 计算确定 RNA 中 2OH 基团的构象
DOI:
10.1002/anie.201007844
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发表时间:
2011
影响因子:
--
通讯作者:
Schwalbe H
中科院分区:
文献类型:
--
作者:
Nozinovic S;Gupta P;Fürtig B;Richter C;Tullmann S;Duchardt-Ferner E;Holthausen MC;Schwalbe H
In contrast to DNA, RNA exhibits pronounced functional, structural, and chemical diversity, which has been considered essential for the evolution of the RNA world.[1] The presence of the 2оOH group induces a change in the predominant sugar conformation and provides catalytic activity, but at the same time it reduces the chemical stability of RNA. 2оOH groups are involved in hydrogen-bonding interactions in noncanonical regions and are responsible for the formation of a wellordered water network spanning the minor groove of the RNA helix.[2] It is therefore of considerable interest to determine experimentally the conformation of the 2оOH group.Molecular dynamics (MD) simulations suggest three preferred orientations for the 2оOH group in the C3о-endo sugar conformation (Figure 1), while for the C2о-endo sugar conformation exclusively O3о-domain orientations are predicted.[3] Experimental determinations of this exocyclic torsion angle pose a serious challenge in RNA structure analyses, because the hydrogen atoms of 2оOH groups are only visible in electron density maps derived by X-ray crystallography at resolutions< 1 and therefore their positions generally remain undetectable. Neutron diffraction is an alternative method for proton detection but reports are sparse, especially for large RNAs. Recent low-temperature NMR spectroscopic studies enabled conformational analyses involving the 2оOH
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影响因子:
14.9
作者:
Schneider, B;Morávek, Z;Berman, HM
通讯作者:
Berman, HM
DOI:
--
发表时间:
1999
期刊:
影响因子:
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作者:
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15
作者:
Duchardt, E;Richter, C;Schwalbe, H
通讯作者:
Schwalbe, H
DOI:
--
发表时间:
2010
期刊:
影响因子:
--
作者:
Elke Duchardt‐Ferner;J. E. Weigand;Oliver Ohlenschläger;Sina R. Schmidtke;Beatrix Suess;J. Wöhnert
通讯作者:
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