基于分子结构的机器学习模型来预测 (Pro) cathepsin-glycosaminoglycan结合的自由能量
Krzysztof K Bojarski1,2, Patrick K Quoika2, Martin Zacharias2
1Department of Physical Chemistry, Gdansk University of Technology, Narutowicza 11/12, Gdansk, Poland.
Computational and structural biotechnology journal
|January 8, 2026
概括
机器学习模型准确地预测了 cathepsins 和 glycosaminoglycans (GAGs) 之间的结合自由能量. 这种方法加速了对药物设计中的蛋白质-GAG相互作用的理解.
科学领域:
- 生物化学 生物化学
- 计算生物学 计算生物学
- 结构生物学 结构生物学
背景情况:
- 甲素是参与各种生物过程的蛋白酶.
- 它们的活性是由糖氨基甘 (GAG) 调节的.
- 预测这些复合体中的结合亲和关系至关重要,但具有挑战性.
研究的目的:
- 开发机器学习 (ML) 模型来预测 (pro) cathepsin-GAG复合体中的结合自由能量.
- 使用分子动力学模拟和结构/能量描述符.
- 建立一个可通用,基于结构的预测器的基础.
主要方法:
- 对六种 (pro) cathepsins和六种GAG进行了分子动力学模拟.
- 从模拟中提取结构和能量特征.
- 训练和评估了八个ML算法,包括完全连接的神经网络 (FCNNs) 和梯度增强模型.
主要成果:
- 该FCNN实现了最高的预测准确性 (R2 = 0.7124).
- 基于GradientBoost的模型显示了可比的性能.
- 整合线性相互作用能量 (LIE) 组件显著提高了准确性.
- 稳定的模型性能是通过~17000个数据点实现的.
结论:
- 机器学习可以准确地估计蛋白质-GAG系统中的结合自由能量.
- 这项研究为基于ML的生物分子相互作用预测提供了概念证明.
- 开发的方法促进了蛋白质-GAG相互作用的快速选和结构导向设计.
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