计算机科学 ›› 2022, Vol. 49 ›› Issue (1): 285-291.doi: 10.11896/jsjkx.201100117
牛富生, 郭延哺, 李维华, 刘文洋
NIU Fu-sheng, GUO Yan-bu, LI Wei-hua, LIU Wen-yang
摘要： 蛋白质可溶性在药物设计的研究中起着重要的作用,传统生物实验测试蛋白质可溶性费时费力,因此基于计算方法对可溶性进行预测成为一个重要的研究方向。针对传统可溶性预测模型不能充分表示蛋白质特征的问题,文中设计了一种基于多种蛋白质序列信息的神经网络模型PSPNet,并应用到蛋白质可溶性预测中。该模型首先使用氨基酸残基序列嵌入信息和氨基酸序列进化信息表示蛋白质序列;然后采用卷积神经网络提取氨基酸序列嵌入特征的局部关键信息;其次利用双向LSTM网络提取蛋白质序列远程依赖特征;最后利用注意力机制将该特征与氨基酸进化信息融合,并将包含了多种序列信息的融合特征用于蛋白质可溶性预测。实验结果表明,相比基准方法,该模型提高了蛋白质可溶性预测的精度,并具有良好的可扩展性。
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