Accurate energies of hydrogen bonded nucleic acid base pairs and triplets in tRNA tertiary interactions.
Accurate energies of hydrogen bonded nucleic acid base pairs and triplets in tRNA tertiary interactions.
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DOI：
10.1093/nar/gkj491
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发表时间：
2006
影响因子：
14.9
通讯作者：
Tramontano A
中科院分区：
文献类型：
--
作者：
Oliva R;Cavallo L;Tramontano A
三级相互作用对于维持tRNA的结构和功能至关重要。我们使用序列分析和量子力学相结合的方法来计算最常见的tRNA三级碱基配对相互作用的准确能量。我们的分析表明，六出的九个经典的三级相互作用举行的地方，主要是由碱基之间的H-键。在其余三种情况下，必须考虑其他影响。在酵母tRNAPhe中，三级碱基配对相互作用能的范围为−8至−38 kcal/mol，估计约占总tRNA碱基配对相互作用能的25%。六个分析的翻译后化学修饰被证明对三级相互作用的几何形状有轻微的影响。引入正电荷的修饰强烈稳定相应的三级相互作用。非加性效应有助于碱基三联体的稳定性。
Tertiary interactions are crucial in maintaining the tRNA structure and functionality. We used a combined sequence analysis and quantum mechanics approach to calculate accurate energies of the most frequent tRNA tertiary base pairing interactions. Our analysis indicates that six out of the nine classical tertiary interactions are held in place mainly by H-bonds between the bases. In the remaining three cases other effects have to be considered. Tertiary base pairing interaction energies range from −8 to −38 kcal/mol in yeast tRNAPhe and are estimated to contribute roughly 25% of the overall tRNA base pairing interaction energy. Six analyzed posttranslational chemical modifications were shown to have minor effect on the geometry of the tertiary interactions. Modifications that introduce a positive charge strongly stabilize the corresponding tertiary interactions. Non-additive effects contribute to the stability of base triplets.
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影响因子：
4.4
作者：
Becke, AD
通讯作者：
Becke, AD
影响因子：
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作者：
Doyon, FR;Zagryadskaya, EI;Steinberg, SV
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作者：
Du, X;Wang, ED
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