首页> 外文会议>Computer Science and Information Technology - Spring Conference, 2009. IACSITSC '09 >Computer Algorithms for Discriminating Protein Folds and Predicting Protein Folding Rates Based on Contact Information
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Computer Algorithms for Discriminating Protein Folds and Predicting Protein Folding Rates Based on Contact Information

机译:基于联系信息的蛋白质折叠识别和蛋白质折叠速率预测的计算机算法

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Inter-residue interactions play an important role in governing the folding and stability of protein structures. In this work, we have analyzed the contacts between amino acid residues in different folding types of globular proteins and various ranges of folding rates. Based on amino acid contacts a novel parameter, multiple contact index has been developed for understanding protein folding rates. We have computed short, medium and long-range contacts in proteins of different folding types and rates from their sequences and structures. Utilizing the information, we have developed models for recognizing protein folds and predicting their folding rates, using machine learning techniques. Our methods showed an accuracy of 55% for discriminating 1612 globular proteins belonging to 30 different folds and an accuracy of 96% to distinguish the fast and slow folding proteins using 5-fold cross-validation method.
机译:残基间相互作用在控制蛋白质结构的折叠和稳定性中起重要作用。在这项工作中,我们分析了不同折叠类型的球状蛋白质中氨基酸残基之间的接触以及各种折叠速率。基于氨基酸接触的新参数,已开发出多种接触指数以了解蛋白质折叠速率。我们已经从它们的序列和结构计算了不同折叠类型和比率的蛋白质中的短,中和远距离接触。利用这些信息,我们使用机器学习技术开发了识别蛋白质折叠并预测其折叠速率的模型。我们的方法显示出使用5倍交叉验证方法区分16种1230个不同折叠形式的球状蛋白的准确度为55%,对快慢折叠蛋白质进行区分的准确度为96%。

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