Abstract:
BACKGROUND:Protein-protein interactions (PPIs) play crucial roles in virtually every aspect of cellular function within an organism. Over the last decade, the development of novel high-throughput techniques has resulted in enormous amounts of data and provided valuable resources for studying protein interactions. However, these high-throughput protein interaction data are often associated with high false positive and false negative rates. It is therefore highly desirable to develop scalable methods to identify these errors from the computational perspective. RESULTS:We have developed a robust computational technique for assessing the reliability of interactions and predicting new interactions by combining manifold embedding with multiple information integration. Validation of the proposed method was performed with extensive experiments on densely-connected and sparse PPI networks of yeast respectively. Results demonstrate that the interactions ranked top by our method have high functional homogeneity and localization coherence. CONCLUSIONS:Our proposed method achieves better performances than the existing methods no matter assessing or predicting protein interactions. Furthermore, our method is general enough to work over a variety of PPI networks irrespectively of densely-connected or sparse PPI network. Therefore, the proposed algorithm is a much more promising method to detect both false positive and false negative interactions in PPI networks.
journal_name
BMC Bioinformaticsjournal_title
BMC bioinformaticsauthors
Lei YK,You ZH,Ji Z,Zhu L,Huang DSdoi
10.1186/1471-2105-13-S7-S3subject
Has Abstractpub_date
2012-05-08 00:00:00pages
S3issn
1471-2105pii
1471-2105-13-S7-S3journal_volume
13 Suppl 7pub_type
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