语义和几何蛋白质编码,以提高生物活性和热稳定性
Yang Tan1,2,3,4, Bingxin Zhou1,3,5,6, Lirong Zheng5
1Shanghai-Chongqing Institute of Artificial Intelligence, Shanghai Jiao Tong University, Chongqing, China.
eLife
|May 2, 2025
概括
这项研究引入了蛋白质工程的新深度学习框架,整合了序列和几何数据,以准确预测变异效应. 该方法通过模拟自然选择来增强蛋白质的功能和稳定性来增强蛋白质的设计.
科学领域:
- 合成生物学 合成生物学
- 计算生物学是一种计算生物学.
- 生物化学 生物化学
背景情况:
- 蛋白质工程修改了氨基酸的新功能,需要准确预测变异效应.
- 目前的深度学习方法主要使用蛋白质序列,限制了对稳定性和功能至关重要的几何和结构信息.
- 评估蛋白质热稳定性预测至关重要,但在现有模型中经常被忽视.
研究的目的:
- 开发一个新的预培训框架,整合蛋白质初级和三级结构的序列和几何编码器.
- 通过模拟自然选择来引导蛋白质突变方向向所需的特征.
- 加强蛋白质工程模型的 in silico 评估系统.
主要方法:
- 开发了一个预培训框架,将蛋白质结构的顺序和几何编码器结合起来.
- 模拟自然选择以指导特定蛋白质特征的突变方向.
- 基于使用深度突变扫描试验的功能适应性评估的变异效应.
主要成果:
- 拟议的框架在三个基准测试 (超过300个测试) 中表现出了卓越的预测性能.
- 与其他具有最小可训练参数的零射击学习方法相比,取得了优异的结果.
- 在预测蛋白质变异效应方面展示了更高的准确性和全面性.
结论:
- 新的框架通过整合结构和序列数据,改善了对高效蛋白质工程的预测.
- 这项研究增强了蛋白质科学的深度学习模型的in silico评估系统.
- 该方法提供了一种具有成本效益的方法,用于准确预测蛋白质变异效应.
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