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© Research
Publication : Bioinformatics (Oxford, England)

Discovering regulatory and signalling circuits in molecular interaction networks

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Bioinformatics (Oxford, England) - 01 Jan 2002

Ideker T, Ozier O, Schwikowski B, Siegel AF

Link to Pubmed [PMID] – 12169552

Bioinformatics 2002;18 Suppl 1:S233-40

In model organisms such as yeast, large databases of protein-protein and protein-DNA interactions have become an extremely important resource for the study of protein function, evolution, and gene regulatory dynamics. In this paper we demonstrate that by integrating these interactions with widely-available mRNA expression data, it is possible to generate concrete hypotheses for the underlying mechanisms governing the observed changes in gene expression. To perform this integration systematically and at large scale, we introduce an approach for screening a molecular interaction network to identify active subnetworks, i.e., connected regions of the network that show significant changes in expression over particular subsets of conditions. The method we present here combines a rigorous statistical measure for scoring subnetworks with a search algorithm for identifying subnetworks with high score.

http://www.ncbi.nlm.nih.gov/pubmed/12169552