Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/99345
標題: SUMOgo: Prediction of sumoylation sites on lysines by motif screening models and the effects of various post-translational modifications
作者: Chang, Chi-Chang
Tung, Chi-Hua
Chen, Chi-Wei
Tu, Chin-Hau
朱彥煒
Chu, Yen-Wei
關鍵字: Amino Acid Motifs;Computational Biology;Consensus Sequence;Databases, Protein;Lysine;ROC Curve;Small Ubiquitin-Related Modifier Proteins;Algorithms;Protein Processing, Post-Translational;Sumoylation
Project: Scientific reports, Volume 8, Issue 1, Page(s) 15512.
摘要: 
Most modern tools used to predict sites of small ubiquitin-like modifier (SUMO) binding (referred to as SUMOylation) use algorithms, chemical features of the protein, and consensus motifs. However, these tools rarely consider the influence of post-translational modification (PTM) information for other sites within the same protein on the accuracy of prediction results. This study applied the Random Forest machine learning method, as well as motif screening models and a feature selection combination mechanism, to develop a SUMOylation prediction system, referred to as SUMOgo. With regard to prediction method, PTM sites were coded as new functional features in addition to structural features, such as sequence-based binary coding, encoded chemical features of proteins, and encoded secondary structure information that is important for PTM. Twenty cycles of prediction were conducted with a 1:1 combination of positive test data and random negative data. Matthew's correlation coefficient of SUMOgo reached 0.511, which is higher than that of current commonly used tools. This study further verified the important role of PTM in SUMOgo and includes a case study on CREB binding protein (CREBBP). The website for the final tool is http://predictor.nchu.edu.tw/SUMOgo .
URI: http://hdl.handle.net/11455/99345
DOI: 10.1038/s41598-018-33951-5
Appears in Collections:基因體暨生物資訊學研究所

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