{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,11]],"date-time":"2026-03-11T23:30:17Z","timestamp":1773271817238,"version":"3.50.1"},"reference-count":40,"publisher":"Oxford University Press (OUP)","issue":"12","license":[{"start":{"date-parts":[[2016,10,2]],"date-time":"2016-10-02T00:00:00Z","timestamp":1475366400000},"content-version":"vor","delay-in-days":2315,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc\/2.0\/uk\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2010,6,15]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>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.<\/jats:p><jats:p>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.<\/jats:p><jats:p>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).<\/jats:p><jats:p>Contact: \u00a0maya.schuldiner@weizmann.ac.il; hanahm@ekmd.huji.ac.il; nir@cs.huji.ac.il<\/jats:p><jats:p>Supplementary information: \u00a0Supplementary data are available at Bioinformatics online.<\/jats:p>","DOI":"10.1093\/bioinformatics\/btq197","type":"journal-article","created":{"date-parts":[[2010,6,7]],"date-time":"2010-06-07T07:28:13Z","timestamp":1275895693000},"page":"i228-i236","source":"Crossref","is-referenced-by-count":22,"title":["Modularity and directionality in genetic interaction maps"],"prefix":"10.1093","volume":"26","author":[{"given":"Ariel","family":"Jaimovich","sequence":"first","affiliation":[{"name":"1 School of Computer Science and Engineering, The Hebrew University of Jerusalem, Jerusalem 91904, 2 Department of Microbiology and Molecular Genetics, IMRIC, Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem 91120, 3 Department of Molecular Genetics, Weizmann Institute of Science, Rehovot 76100 and 4 The Alexander Silberman Institute of Life Sciences, The Hebrew University of Jerusalem, Jerusalem 91904, Israel"},{"name":"1 School of Computer Science and Engineering, The Hebrew University of Jerusalem, Jerusalem 91904, 2 Department of Microbiology and Molecular Genetics, IMRIC, Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem 91120, 3 Department of Molecular Genetics, Weizmann Institute of Science, Rehovot 76100 and 4 The Alexander Silberman Institute of Life Sciences, The Hebrew University of Jerusalem, Jerusalem 91904, Israel"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ruty","family":"Rinott","sequence":"additional","affiliation":[{"name":"1 School of Computer Science and Engineering, The Hebrew University of Jerusalem, Jerusalem 91904, 2 Department of Microbiology and Molecular Genetics, IMRIC, Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem 91120, 3 Department of Molecular Genetics, Weizmann Institute of Science, Rehovot 76100 and 4 The Alexander Silberman Institute of Life Sciences, The Hebrew University of Jerusalem, Jerusalem 91904, Israel"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Maya","family":"Schuldiner","sequence":"additional","affiliation":[{"name":"1 School of Computer Science and Engineering, The Hebrew University of Jerusalem, Jerusalem 91904, 2 Department of Microbiology and Molecular Genetics, IMRIC, Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem 91120, 3 Department of Molecular Genetics, Weizmann Institute of Science, Rehovot 76100 and 4 The Alexander Silberman Institute of Life Sciences, The Hebrew University of Jerusalem, Jerusalem 91904, Israel"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hanah","family":"Margalit","sequence":"additional","affiliation":[{"name":"1 School of Computer Science and Engineering, The Hebrew University of Jerusalem, Jerusalem 91904, 2 Department of Microbiology and Molecular Genetics, IMRIC, Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem 91120, 3 Department of Molecular Genetics, Weizmann Institute of Science, Rehovot 76100 and 4 The Alexander Silberman Institute of Life Sciences, The Hebrew University of Jerusalem, Jerusalem 91904, Israel"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Nir","family":"Friedman","sequence":"additional","affiliation":[{"name":"1 School of Computer Science and Engineering, The Hebrew University of Jerusalem, Jerusalem 91904, 2 Department of Microbiology and Molecular Genetics, IMRIC, Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem 91120, 3 Department of Molecular Genetics, Weizmann Institute of Science, Rehovot 76100 and 4 The Alexander Silberman Institute of Life Sciences, The Hebrew University of Jerusalem, Jerusalem 91904, Israel"},{"name":"1 School of Computer Science and Engineering, The Hebrew University of Jerusalem, Jerusalem 91904, 2 Department of Microbiology and Molecular Genetics, IMRIC, Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem 91120, 3 Department of Molecular Genetics, Weizmann Institute of Science, Rehovot 76100 and 4 The Alexander Silberman Institute of Life Sciences, The Hebrew University of Jerusalem, Jerusalem 91904, Israel"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"286","published-online":{"date-parts":[[2010,6,1]]},"reference":[{"key":"2023012508051265600_B1","doi-asserted-by":"crossref","first-page":"25","DOI":"10.1038\/75556","article-title":"Gene ontology: tool for the unification of biology. 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