Genome-scale analysis of interaction dynamics reveals organization of biological networks.

Bioinformatics
Jishnu DasHaiyuan Yu

Abstract

Analyzing large-scale interaction networks has generated numerous insights in systems biology. However, such studies have primarily been focused on highly co-expressed, stable interactions. Most transient interactions that carry out equally important functions, especially in signal transduction pathways, are yet to be elucidated and are often wrongly discarded as false positives. Here, we revisit a previously described Smith-Waterman-like dynamic programming algorithm and use it to distinguish stable and transient interactions on a genomic scale in human and yeast. We find that in biological networks, transient interactions are key links topologically connecting tightly regulated functional modules formed by stable interactions and are essential to maintaining the integrity of cellular networks. We also perform a systematic analysis of interaction dynamics across different technologies and find that high-throughput yeast two-hybrid is the only available technology for detecting transient interactions on a large scale.

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Citations

Dec 18, 2012·Bioinformatics·Davide AlbaneseCesare Furlanello
Mar 23, 2013·Schizophrenia Bulletin·Aiden Corvin
Aug 9, 2013·BMC Bioinformatics·Shouguo Gao, Xujing Wang
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