Title
Inferring a protein interaction map of Mycobacterium tuberculosis based on sequences and interologs.
Abstract
Mycobacterium tuberculosis is an infectious bacterium posing serious threats to human health. Due to the difficulty in performing molecular biology experiments to detect protein interactions, reconstruction of a protein interaction map of M. tuberculosis by computational methods will provide crucial information to understand the biological processes in the pathogenic microorganism, as well as provide the framework upon which new therapeutic approaches can be developed.In this paper, we constructed an integrated M. tuberculosis protein interaction network by machine learning and ortholog-based methods. Firstly, we built a support vector machine (SVM) method to infer the protein interactions of M. tuberculosis H37Rv by gene sequence information. We tested our predictors in Escherichia coli and mapped the genetic codon features underlying its protein interactions to M. tuberculosis. Moreover, the documented interactions of 14 other species were mapped to the interactome of M. tuberculosis by the interolog method. The ensemble protein interactions were validated by various functional relationships, i.e., gene coexpression, evolutionary relationship and functional similarity, extracted from heterogeneous data sources. The accuracy and validation demonstrate the effectiveness and efficiency of our framework.A protein interaction map of M. tuberculosis is inferred from genetic codons and interologs. The prediction accuracy and numerically experimental validation demonstrate the effectiveness and efficiency of our method. Furthermore, our methods can be straightforwardly extended to infer the protein interactions of other bacterial species.
Year
DOI
Venue
2012
10.1186/1471-2105-13-S7-S6
BMC Bioinformatics
Keywords
Field
DocType
support vector machines,microarrays,algorithms,bioinformatics,escherichia coli
Protein Interaction Map,Protein–protein interaction,Mycobacterium tuberculosis,Biology,Support vector machine classifier,Gene ontology,Bioinformatics,Genetics,DNA microarray,Tuberculosis,Human health
Journal
Volume
Issue
ISSN
13 Suppl 7
S-7
1471-2105
Citations 
PageRank 
References 
8
0.41
19
Authors
7
Name
Order
Citations
PageRank
Zhi-Ping Liu11008.99
Jiguang Wang2365.75
Yu-Qing Qiu3404.54
Ross K. K. Leung4101.48
Xiang-Sun Zhang5101677.06
Stephen K.-W. Tsui613012.70
Luonan Chen71485145.71