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Bioinform. Comput. Biol."],"published-print":{"date-parts":[[2018,8]]},"abstract":"<jats:p> Protein-protein binding interaction is the most prevalent biological activity that mediates a great variety of biological processes. The increasing availability of experimental data of protein\u2013protein interaction allows a systematic construction of protein\u2013protein interaction networks, significantly contributing to a better understanding of protein functions and their roles in cellular pathways and human diseases. Compared to well-established classification for protein\u2013protein interactions (PPIs), limited work has been conducted for estimating protein\u2013protein binding free energy, which can provide informative real-value regression models for characterizing the protein\u2013protein binding affinity. In this study, we propose a novel ensemble computational framework, termed ProBAPred (Protein\u2013protein Binding Affinity Predictor), for quantitative estimation of protein\u2013protein binding affinity. A large number of sequence and structural features, including physical\u2013chemical properties, binding energy and conformation annotations, were collected and calculated from currently available protein binding complex datasets and the literature. Feature selection based on the WEKA package was performed to identify and characterize the most informative and contributing feature subsets. Experiments on the independent test showed that our ensemble method achieved the lowest Mean Absolute Error (MAE; 1.657[Formula: see text]kcal\/mol) and the second highest correlation coefficient ([Formula: see text]), compared with the existing methods. The datasets and source codes of ProBAPred, and the supplementary materials in this study can be downloaded at http:\/\/lightning.med.monash.edu\/probapred\/ for academic use. We anticipate that the developed ProBAPred regression models can facilitate computational characterization and experimental studies of protein\u2013protein binding affinity. <\/jats:p>","DOI":"10.1142\/s0219720018500117","type":"journal-article","created":{"date-parts":[[2018,4,26]],"date-time":"2018-04-26T22:20:08Z","timestamp":1524781208000},"page":"1850011","source":"Crossref","is-referenced-by-count":5,"title":["ProBAPred: Inferring protein\u2013protein binding affinity by incorporating protein sequence and structural features"],"prefix":"10.1142","volume":"16","author":[{"given":"Bangli","family":"Lu","sequence":"first","affiliation":[{"name":"School of Computer, Electronic and Information, and State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi University, 100 Daxue Road, 530004 Nanning, P. R. 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