Cited by 32Bioinformatics and Genomic NetworksGene Regulatory Network AnalysisFungal and yeast genetics research

Modularity and directionality in genetic interaction maps

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Jaimovich, Ariel, Rinott, Ruty, Schuldiner, Maya, Margalit, Hanah, Friedman, Nir·2010·Bioinformatics

Abstract

MOTIVATION: Genetic interactions between genes reflect functional relationships caused by a wide range of molecular mechanisms. Large-scale genetic interaction assays lead to a wealth of information about the functional relations between genes. However, the vast number of observed interactions, along with experimental noise, makes the interpretation of such assays a major challenge. RESULTS: Here, we introduce a computational approach to organize genetic interactions and show that the bulk of observed interactions can be organized in a hierarchy of modules. Revealing this organization enables insights into the function of cellular machineries and highlights global properties of interaction maps. To gain further insight into the nature of these interactions, we integrated data from genetic screens under a wide range of conditions to reveal that more than a third of observed aggravating (i.e. synthetic sick/lethal) interactions are unidirectional, where one gene can buffer the effects of perturbing another gene but not vice versa. Furthermore, most modules of genes that have multiple aggravating interactions were found to be involved in such unidirectional interactions. We demonstrate that the identification of external stimuli that mimic the effect of specific gene knockouts provides insights into the role of individual modules in maintaining cellular integrity. AVAILABILITY: We designed a freely accessible web tool that includes all our findings, and is specifically intended to allow effective browsing of our results (http://compbio.cs.huji.ac.il/GIAnalysis). SUPPLEMENTARY INFORMATION: Supplementary data are available at Bioinformatics online.

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  • Developing a multiscale representation requires analyzing communities in biological networks at more than one scale, defining and identifying communities at each scale, and tracing containment to infer a hierarchical map.

    “Developing a multiscale representation requires analyzing communities in biological networks at more than one scale. Communities (clusters of highly interconnected nodes) are first defined and identified at each of multiple scales; subsequently, communities that are contained within other communities, in whole or in part, can be traced to infer a hierarchical map (Figure 2) (Dotan-Cohen et al., 20”

    From Mapping the multiscale structure of biological systems (2021) · cites this paper as Jaimovich et al., 2010

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Authors
Jaimovich, A., Rinott, R., Schuldiner, M., Margalit, H., & Friedman, N.
Affiliations
Hebrew University of Jerusalem (IL)
Corresponding author
  • Schuldiner, Maya
  • Margalit, Hanah
  • Friedman, Nir
Venue
Bioinformatics
Published
2010-06-01
Volume
26
Issue
12
Pages
i228-i236
ISSN
  • 1367-4803 (ISSN-L)
  • 1367-4811
OpenAlex
W2105638592
Cited by
32
References
41
Citations by year
2026: 1 · 2021: 2 · 2020: 2 · 2018: 1 · 2017: 3 · 2016: 4 · 2014: 3 · 2013: 3 · 2012: 2
FWCI
2.09
Type
journal article
Language
en
Open access
Locations
  • Bioinformatics (publishedVersion, cc-by-nc)
  • PubMed Central (publishedVersion, cc-by-nc)
  • PubMed (publishedVersion)
Funders
  • European Commission (LSHG-CT-2005-512028)
  • National Institutes of Health (1r01ca119176-01)
  • National Cancer Institute (1R01CA119176-01, R01-CA119176)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Bioinformatics and Genomic Networks
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gene Regulatory Network Analysis
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Fungal and yeast genetics research
Keywords
genetic interactions, modularity, synthetic lethality, gene function, genetic screen, network hierarchy, cell integrity, web-based tool
MeSH terms
Algorithms, Saccharomyces cerevisiae, Computational Biology, Saccharomyces cerevisiae Proteins, Gene Regulatory Networks

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