一种可解释的深度几何学习模型,用于预测突变对蛋白质-蛋白质相互作用的影响,使用大规模蛋白质语言模型
Caiya Zhang1, Yan Sun1,2,3, Pingzhao Hu4,5,6,7,8,9
1Department of Computer Science, Western University, London, ON, Canada.
Journal of cheminformatics
|March 22, 2025
概括
这项研究引入了一种基于变压器的新型图形神经网络,以准确预测蛋白质-蛋白质相互作用 (PPI) 的变化. 该模型整合了本地和全球特征,优于理解疾病病因的现有方法.
科学领域:
- 计算生物学是一种计算生物学.
- 生物信息学是一种生物信息学.
- 结构生物学是结构生物学.
背景情况:
- 蛋白与蛋白相互作用 (PPI) 对细胞功能至关重要,包括信号通路和免疫反应.
- 了解PPI的变化对于破译疾病病因至关重要.
- 目前用于预测PPI变化的方法往往侧重于局部特征,可能缺少远距离相互作用的关键信息.
研究的目的:
- 开发一种先进的深度学习模型,准确预测蛋白质-蛋白质相互作用 (PPI) 中的结合亲和力变化.
- 从蛋白质结构中整合本地和全球特征,以便进行全面分析.
- 为了利用大规模预训练的蛋白质语言模型来增强特征表示.
主要方法:
- 基于变压器的图形神经网络 (GNN) 架构的开发.
- 从蛋白质-蛋白质复合体的三维结构中提取特征,考虑本地和全球信息.
- 从预先训练的蛋白质语言模型中获得的全球蛋白质特征的整合.
- 在包含单个和多个突变的多个数据集上的性能评估.
主要成果:
- 拟议的模型实现了1.10的根平均平方误差和大约0.71.7的皮尔森相关系数.
- 该模型在所有测试的数据集中,与四种最先进的基线方法相比,显示出更高的性能.
- 实验评估证实了该模型在预测突变诱导的结合亲和力变化的有效性.
结论:
- 开发的基于变压器的GNN通过整合本地和全球特征以及预先训练的语言模型,有效预测PPI的变化.
- 这种方法提供了对蛋白质复合体动态和突变效应的更全面的理解.
- 这些发现为研究免疫反应,疾病病因学提供了宝贵的见解,可以应用于各种与PPI相关的生物化学研究.
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