一种融合酶促反应多模态特征的酶周转数预测方法及系统

By constructing a multimodal feature prediction method and integrating information from enzymes, substrates, and products using deep learning technology, the high cost and low accuracy of enzyme turnover prediction are solved, achieving more efficient prediction of enzyme catalytic constants and construction of metabolic network models.

CN121483405BActive Publication Date: 2026-07-17JIANGNAN UNIV

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
JIANGNAN UNIV
Filing Date
2025-09-22
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing methods for predicting enzyme turnover are costly, time-consuming, and lack accuracy and reliability, failing to effectively integrate multimodal information of enzyme-catalyzed reactions.

Method used

A prediction method integrating multimodal features of enzyme-catalyzed reactions is adopted. By constructing an optimized pre-trained model of protein and chemical reaction, the feature matrices of enzyme, substrate and product are extracted by combining graph attention network and graph isomorphic network, and the feature is enhanced by cross attention mechanism. Finally, the data are input into a multilayer perceptron to predict enzyme turnover.

Benefits of technology

It significantly improves the accuracy and reliability of predicting enzyme catalytic constants, solves the problems of high cost and low precision of traditional methods, and provides more efficient support for enzyme screening and metabolic network model construction.

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Abstract

本发明涉及一种融合酶促反应多模态特征的酶周转数预测方法及系统,属于生物信息学技术领域。包括:分别构建优化蛋白质预训练模型和优化化学反应预训练模型;利用优化蛋白质预训练模型提取待测氨基酸序列的序列特征,得到酶序列特征矩阵;利用优化化学反应预训练模型提取待测酶促反应SMILES序列的序列特征,得到酶促反应SMILES特征矩阵;利用分子指纹表征底物和产物分子集合,并通过图注意力网络提取两个分子集合的集合特征矩阵;利用分子图表征底物和产物分子集合,并通过图同构网络提取两个分子集合中分子的内部特征矩阵;对获取的特征矩阵进行特征增强,从而得到酶周转数预测值。本发明提升了预测结果的稳定性和精度,且具有低成本、短周期的优势。
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