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首页> 外文期刊>Journal of Biomolecular Structure and Dynamics >Molecular dynamics study of intrinsic stability in six RNA terminal loop motifs.
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Molecular dynamics study of intrinsic stability in six RNA terminal loop motifs.

机译:分子动力学研究了六个RNA末端环基序的内在稳定性。

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摘要

Single stranded RNA molecules can assume a wide range of tertiary structures beyond the canonical A-form double helix. Certain sequences, termed motifs, are more common than a random distribution would suggest. The existence of such motifs can be rationalized in structural terms. In this study, we have investigated the intrinsic structural stability of RNA terminal loop motifs using multiple MD simulations in explicit water. Representative loops were chosen from the major tetraloop motifs, including also the U-turn motif. Not all loops retain their folded starting structure, but lowering the temperature to 277 K, or adding adjacent base pairs from the stem to which the motif is attached, helps stabilizing the folded loop structure.
机译:单链RNA分子可以采用除典型的A型双螺旋以外的多种三级结构。某些序列(称为基序)比随机分布所暗示的更为普遍。这样的图案的存在可以在结构上合理化。在这项研究中,我们研究了在显性水中使用多个MD模拟的RNA末端环基序的内在结构稳定性。从主要的四环基序中选择代表性的环,还包括掉头基序。并非所有的环都保留其折叠的起始结构,但将温度降低到277 K,或从连接有基序的茎中添加相邻的碱基对,有助于稳定折叠的环结构。

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