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  • 1
    Language: English
    In: Advances in protein chemistry and structural biology, 2015, Vol.101, pp.323-49
    Description: Protein interaction networks (PINs) are argued to be the richest source of hidden knowledge of the intrinsic physical and/or functional meanings of the involved proteins. We propose a novel method for computational protein function prediction based on semantic homogeneity optimization in PIN (SHOPIN). The SHOPIN method creates graph representations of the PIN augmented by inclusion of the semantics of the proteins and their interacting contexts. Network wide semantic relationships, modeled using random walks, are used to map the augmented PIN graphs in a new semantic metric space. The method produces a hierarchical partitioning of the PIN optimal in terms of semantic homogeneity by iterative optimization of the ratio of between clusters dissimilarities and within clusters similarities in the new semantic metric space. Function prediction is done using cluster wide-hierarchy high function enrichment. Results validate the rationale of the SHOPIN method placing it right next to state-of-the-art approaches performance wise.
    Keywords: Clustering ; Protein Interaction Networks ; Semantic Homogeneity ; Semantic Similarity ; Computational Biology ; Protein Interaction Maps ; Proteins -- Chemistry
    ISSN: 1876-1623
    Source: MEDLINE/PubMed (U.S. National Library of Medicine)
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