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arXiv 2411.11366q-bio.BM
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SCOP:一种用于蛋白质功能预测的序列-结构对比感知框架

SCOP: A Sequence-Structure Contrast-Aware Framework for Protein Function Prediction

Runze Ma, Chengxin He, Huiru Zheng, Xinye Wang, Haiying Wang, Yidan Zhang, Lei Duan

AI总结:

本文提出用于蛋白质功能预测的对比感知预训练框架SCOP,通过编码器整合拓扑与空间特征并利用卷积神经网络学习序列特征,结合两类辅助监督探索视图相关性,在五个数据集上以更少数据实现更优预测。

摘要:

提升蛋白质功能预测的能力有望促进药物发现和精准医学领域的研究。从技术上讲,蛋白质的特性直接或间接地反映在其序列和结构信息中,尤其是蛋白质功能在很大程度上由其空间特性决定。现有方法大多关注蛋白质序列或拓扑结构,很少利用空间特性,并忽略了序列与结构信息之间的相关性。此外,获取标注数据以改进蛋白质功能预测通常耗时且成本高昂。为此,本文提出了一种用于蛋白质功能预测的新型对比感知预训练框架,称为SCOP。我们首先设计了一个简单而有效的编码器,在结构视图下整合蛋白质的拓扑和空间特征。然后利用卷积神经网络在序列视图下学习蛋白质特征。最后,我们通过利用两类辅助监督来预训练SCOP,以探索这两种视图之间的相关性,从而提取信息丰富的表示以更好地预测蛋白质功能。在四个基准数据集和一个自建数据集上的实验结果表明,SCOP在使用更少预训练数据的同时,提供了更具体的结果。

英文摘要:

Improving the ability to predict protein function can potentially facilitate research in the fields of drug discovery and precision medicine. Technically, the properties of proteins are directly or indirectly reflected in their sequence and structure information, especially as the protein function is largely determined by its spatial properties. Existing approaches mostly focus on protein sequences or topological structures, while rarely exploiting the spatial properties and ignoring the relevance between sequence and structure information. Moreover, obtaining annotated data to improve protein function prediction is often time-consuming and costly. To this end, this work proposes a novel contrast-aware pre-training framework, called SCOP, for protein function prediction. We first design a simple yet effective encoder to integrate the protein topological and spatial features under the structure view. Then a convolutional neural network is utilized to learn the protein features under the sequence view. Finally, we pretrain SCOP by leveraging two types of auxiliary supervision to explore the relevance between these two views and thus extract informative representations to better predict protein function. Experimental results on four benchmark datasets and one self-built dataset demonstrate that SCOP provides more specific results, while using less pre-training data.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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