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一个虚拟系统合的分子动力学模拟,不依赖于结合部位的实验知识:应用到RNA-合体结合的自由能量景观

Junichi Higo^1,2, Kota Kasahara^3,4, Shun Sakuraba^5,6

¹Graduate School of Information Science, University of Hyogo, Kobe, Hyogo 650-0047, Japan.

Biophysics and physicobiology

|June 12, 2025

概括

这项研究引入了一种新的计算方法,即卡特西安空间划分mD-VcMD (CSD-mD-VcMD),用于模拟灵活的联体受体相互作用. 该方法成功地预测了无需先前的结构知识的RNA-连接体系统的结合景观.

科学领域:

计算化学计算化学
生物物理学的生物物理.
分子建模分子建模

背景情况:

对灵活的生物分子来说,体受体对接是具有挑战性的.
预先了解复杂结构或结合点的知识可以简化对接.
现有的方法通常需要结合地点的实验数据.

研究的目的:

在没有先前的结构知识的情况下,开发一种通用整体方法来计算稳定的复杂结构.
通过消除对先前存在的复杂结构信息的需求,扩展以前的方法.
从离散的形状生成具有约束力的自由能量景观.

主要方法:

引入了纸质空间划分 mD-VcMD (CSD-mD-VcMD) 方法.
将该方法应用于 ribocil-RNA (FMN riboswitch aptamer) 的结合.
将CSD-mD-VcMD结果与使用先前结构知识的先前方法进行比较.

主要成果:

CSD-mD-VcMD成功地为灵活的RNA-连接体系统生成了具有约束力的自由能量格局.
结果与实验数据一致,显示利博B比利博A的结合更强.
新方法准确地识别了结合相互作用,而不依赖实验结合地点信息.

结论:

CSD-mD-VcMD对于计算高度灵活的生物分子的稳定复杂结构是有效的.
该方法为结合自由能量景观提供了有价值的见解,即使对于神秘的结合站点.
这种方法提高了分子对接模拟中的 conformational 采样和预测准确性.

关键词:

复杂的结构复杂的结构结构.一个通用化的合奏.分子动力学分子动力学里博西尔 (Ribosil) 里博西尔 (Ribocil) 是一种肋骨开关肋骨开关肋骨开关

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