Abstract
Post-translational modification (PTM) is considered a significant biological process with a tremendous impact on the function of proteins in both eukaryotes, and prokaryotes cells. Malonylation of lysine is a newly discovered post-translational modification, which is associated with many diseases, such as type 2 diabetes and different types of cancer. In addition, compared with the experimental identification of propionylation sites, the calculation method can save time and reduce cost. In this paper, we combine principal component analysis with support vector machine (SVM) to propose a new computational model - Mal-prec (malonylation prediction). Firstly, the one-hot encoding, physicochemical properties and the composition of k-spacer acid pairs were used to extract sequence features. Secondly, we preprocess the data, select the best feature subset by principal component analysis (PCA), and predict the malonylation sites by SVM. And then, we do a five-fold cross validation, and the results show that compared with other methods, Mal-prec can get better prediction performance. In the 10-fold cross validation of independent data sets, AUC (area under receiver operating characteristic curve) analysis has reached 96.39%. Mal-pred is used to identify the malonylation sites in the protein sequence, which is a computationally reliable method. It is superior to the existing prediction tools that found in the literature and can be used as a useful tool for identifying and discovering novel malonylation sites in human proteins.
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Acknowledgement
This work is supported by the fundamental Research Funds for the Central Universities, 2020QN89, Xuzhou science and technology plan project (KC19142), the talent project of ‘Qingtan scholar’ of Zaozhuang University, Jiangsu Provincial Natural Science Foundation, China (SBK2019040953), Youth Innovation Teamof Scientific Research Foundation of the Higher Education Institutions of Shandong Province, China (2019KJM006), the Key Research Program of the Science Foundation of Shandong Province (ZR2020KE001), the PhD research startup foundation of Zaozhuang University (2014BS13) and Zaozhuang University Foundation (2015YY02), the Natural Science Foundation of China (61902337), Natural Science Fund for Colleges and Universities in Jiangsu Province (19KJB520016), Xuzhou Natural Science Foundation KC21047 and Young talents of science and technology in Jiangsu.
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Chen, B., Gu, Y., Yang, B., Bao, W. (2022). The Identifications of Post Translational Modification Sites with Capsule Network. In: Jiang, D., Song, H. (eds) Simulation Tools and Techniques. SIMUtools 2021. Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, vol 424. Springer, Cham. https://doi.org/10.1007/978-3-030-97124-3_42
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DOI: https://doi.org/10.1007/978-3-030-97124-3_42
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