局部无序区域采样 (LDRS) 用于对具有实验未确定或低置信度预测段的蛋白质进行集体建模
Zi Hao Liu1,2, João M C Teixeira1, Oufan Zhang3,4
1Molecular Medicine Program, Hospital for Sick Children, Toronto, Ontario M5G 0A4, Canada.
bioRxiv : the preprint server for biology
|August 7, 2023
概括
当地无序区域采样工具为本质上无序的区域生成蛋白质构造. 这种方法通过模拟缺少的柔性区域以物理准确度来完成蛋白质结构.
科学领域:
- 计算生物学 计算生物学
- 结构生物学 结构生物学
- 生物物理学的生物物理.
背景情况:
- 内在无序区域 (IDR) 在实验蛋白质结构中往往缺乏坐标.
- 灵活的蛋白质片段在预测结构中可能具有较低的信心分数.
- 对IDRs的准确建模对于理解蛋白质功能至关重要.
研究的目的:
- 引入本地无序区域采样 (LDRS) 工具,用于生成全原子蛋白质构造.
- 通过模拟缺少的灵活区域,使全长蛋白质结构的完成成为可能.
- 提供一种方法来提高蛋白质模型的结构完整性和信心.
主要方法:
- 使用IDPConformerGenerator平台来生成蛋白质构造.
- 需要先前存在的PDB结构和蛋白质的初级序列.
- 使用增强的蒙特卡洛侧链 (MC-SCE) 来建模酸化场所.
- 在全原子双层和多链复合体内模型跨膜蛋白.
主要成果:
- 对于缺少的蛋白质区域,LDRS会自动生成具有物理意义的构造组合.
- 该工具可以模拟复杂的场景,包括酸化,跨膜蛋白和多链复合体.
- IDPConformerGenerator平台的模块化和速度增强了LDRS的能力.
结论:
- LDRS有效地模拟了内在无序的区域,完成了蛋白质结构.
- 该工具为蛋白质结构建模提供了一种多功能和计算效率高的方法.
- LDRS促进了灵活蛋白质元素及其功能影响的研究.
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