在CASP15中使用MULTICOM增强基于AlphaFold-Multimer的蛋白质复合体结构预测
Jian Liu1, Zhiye Guo1, Tianqi Wu1
1Department of Electrical Engineering and Computer Science, NextGen Precision Health Institute, University of Missouri, Columbia, MO 65211, USA.
bioRxiv : the preprint server for biology
|June 9, 2023
概括
通过改善AlphaFold-Multimer的输入和精制输出,MULTICOM增强了蛋白质复杂结构预测. 这种新的系统在CASP15中获得了最高排名,超过了标准的AlphaFold-Multimer预测.
科学领域:
- 计算生物学 计算生物学
- 结构生物学 结构生物学
- 生物信息学是一种生物信息学.
背景情况:
- AlphaFold-Multimer是用于预测蛋白质复杂结构的领先工具.
- 提高AlphaFold-Multimer的性能需要优化输入数据和改进预测输出.
研究的目的:
- 开发一个改进的系统 (MULTICOM) 用AlphaFold-Multimer来预测蛋白质四级结构.
- 为了提高蛋白质复杂结构预测的准确性和可靠性.
主要方法:
- 开发了MULTICOM系统,集成多种多重序列对齐 (MSA) 和AlphaFold-Multimer的模板.
- 使用基于Foldseek的结构对齐用于模型生成和改进.
- 使用多个互补的指标排名结构模型.
主要成果:
- 在CASP15.15中,MULTICOM系统 (MULTICOM_qa服务器,MULTICOM_人类预测器) 获得了高排名.
- 与标准AlphaFold-Multimer相比,MULTICOM_qa的TM平均得分增加了5.3%和8%.
- 基于对齐的模型生成 (FSAMG) 超过了传统的序列对齐方法.
结论:
- 在蛋白质复杂结构预测方面,MULTICOM显著改进了AlphaFold-Multimer.
- 该系统的性能通过CASP15竞赛的严格测试来验证.
- 在预测蛋白质组合的四级结构方面,MULTICOM提供了一个有前途的进步.
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