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在CASP16中对RNA周围复杂的水和离子组合的盲目预测

Rachael C Kretsch¹, Elisa Posani², Eugene F Baulin^3,4

¹Biophysics Program, Stanford University School of Medicine, Stanford, California, USA.

bioRxiv : the preprint server for biology

|November 24, 2025

概括

使用集合对生物分子中水和离子结构的盲目预测比传统模型更好地捕捉动态相互作用. 分子动力学模拟表明,用冷电子显微镜 (cryo-EM) 地图对这些隐藏的组件进行定量评估是有希望的.

科学领域:

结构生物学结构生物学
计算生物学计算生物学
生物物理学的生物物理.

背景情况:

生物分子的折叠和功能取决于水和离子,但它们的动态相互作用很难在实验中观察.
当前的方法往往将生物分子表示为单一的,有序的结构,缺少短暂或无序的溶剂外细节.

研究的目的:

将水和离子组合的盲目预测与实验冷电子显微镜 (cryo-EM) 数据进行比较.
为了评估集合表示在捕获动态生物分子溶解中的能力.
评估计算方法在模拟水和离子行为的准确性.

主要方法:

一个盲目的预测挑战 (CASP16) 涉及26个小组预测水和离子结构周围的*Tetrahymena* ribozyme.
将预测的原子组合与高分辨率 (2.2-2.3 Å) 的冷电磁密度进行比较.
使用相关系数,相互信息和精度回忆曲线进行定量评估.

主要成果:

与传统的原子模型相比,组合预测更好地捕获了短暂的水和离子信息.
预测和实验不确定性之间仍然存在显著的准确性差距.
分子动力学 (MD) 模拟,特别是特定群体的盲目的预测,显示出与冷-EM密度的最佳一致.

结论:

水和离子的模拟可以使用冷电磁图进行定量评估.
集合建模为生物分子溶解动态提供了更好的洞察力.
全社区的盲目挑战对于推进水,离子和其他隐藏的生物分子组件的建模至关重要.

关键词:

这是一个RNARNARNARNARNA.低温电磁波冷却器 (Cryo-EM) 是一个非常好的方法.整体预测整体预测离子离子是一种离子.分子动力学分子动力学里博酶里博酶是什么意思解决方法解决方法水水水的水水的水

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