Integration of Gene Ontology-based similarities for supporting analysis of protein-protein interaction networks

  • Authors:
  • Haiying Wang;Huiru Zheng;Fiona Browne;David H. Glass;Francisco Azuaje

  • Affiliations:
  • School of Computing and Mathematics, Computer Science Research Institute, University of Ulster, Newtownabbey, Co. Antrim, BT37 0QB, UK;School of Computing and Mathematics, Computer Science Research Institute, University of Ulster, Newtownabbey, Co. Antrim, BT37 0QB, UK;i-Path Diagnostics, 23 University Street, Belfast BT 7 1FY, UK;School of Computing and Mathematics, Computer Science Research Institute, University of Ulster, Newtownabbey, Co. Antrim, BT37 0QB, UK;Department of Cardiovascular Diseases, CRP-Santé, L-1150, Luxembourg

  • Venue:
  • Pattern Recognition Letters
  • Year:
  • 2010

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Abstract

In recent years there has been a growing trend towards the inclusion of diverse genomic information to support comprehensive large-scale prediction of protein-protein interaction networks. The Gene Ontology (GO) is one such functional knowledge resource, which consists of three hierarchies to describe functional attributes of gene products: Molecular function, biological process, and cellular component. Using Bayesian networks, this paper presents a framework for the probabilistic combination of semantic similarity knowledge extracted from the three GO hierarchies for analysis of protein-protein interaction networks and demonstrates its application in yeast. The results indicate that by integrating information encoded in the GO hierarchies a better result can be achieved in terms of both statistical prediction capability and potential biological relevance.