使用iESCC准确的酶特异性常数预测
Yu Zhang1, Li-Hua Liu2, Shuqi Wang2
1Biosciences Central Research Facility, The Hong Kong University of Science and Technology, GuangZhou 510000, China.
Bioresource technology
|January 27, 2026
概括
一个新的深度学习模型,iESC,从酶序列和基质结构准确地预测了诸如迈凯利斯常数 (Km) 和循环数 (kcat) 等酶动态参数,加速了酶研究.
科学领域:
- 生物化学 生物化学
- 计算生物学 计算生物学
- 酶动力学 酶动力学
背景情况:
- 酶特异性常数 (ESC),包括迈凯利斯常数 (Km) 和周转数 (kcat),对于理解酶功能至关重要.
- 确定Km和kcat的传统方法耗费大量资源和时间,阻碍了快速的酶表征.
研究的目的:
- 开发和验证iESC,一种新的深度学习模型,只使用酶序列和基质结构来准确预测酶运动参数 (Km,kcat和kcat/Km).
- 为了证明iESC的优越性能与现有的最先进的模型相比.
主要方法:
- 在iESC的训练中,使用了41,907个酶基质动态参数的大数据集,这些数据集经过了精心策划和预处理,以获得准确性和独立性.
- 该模型将高级特征提取技术与深度学习架构集成在一起.
- 使用确定系数 (R2),根平均平方误差 (RMSE) 和平均绝对误差 (MAE) 评估性能,并与其他模型进行基准测试.
主要成果:
- iESC实现了高预测精度,Km的R2值为0.63,kcat为0.60,kcat/Km为0.62.
- 基准测试证实iESC的显著优于现有模型的性能,显示出更高的R2和更低的RMSE和MAE.
- 该模型在高通量查 (HTS) 和深度突变扫描 (DMS) 环境中显示出强大的适用性.
结论:
- iESC提供了一种快速,准确和基于序列的方法来预测关键的酶动力学参数.
- 该模型对加速酶发现,工程和功能表征在各种生物技术应用中具有重大意义.
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