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Significant conservation of synthetic lethal genetic interaction networks between distantly related eukaryotes.


ABSTRACT: Synthetic lethal genetic interaction networks define genes that work together to control essential functions and have been studied extensively in Saccharomyces cerevisiae using the synthetic genetic array (SGA) analysis technique (ScSGA). The extent to which synthetic lethal or other genetic interaction networks are conserved between species remains uncertain. To address this question, we compared literature-curated and experimentally derived genetic interaction networks for two distantly related yeasts, Schizosaccharomyces pombe and S. cerevisiae. We find that 23% of interactions in a novel, high-quality S. pombe literature-curated network are conserved in the existing S. cerevisiae network. Next, we developed a method, called S. pombe SGA analysis (SpSGA), enabling rapid, high-throughput isolation of genetic interactions in this species. Direct comparison by SpSGA and ScSGA of approximately 220 genes involved in DNA replication, the DNA damage response, chromatin remodeling, intracellular transport, and other processes revealed that approximately 29% of genetic interactions are common to both species, with the remainder exhibiting unique, species-specific patterns of genetic connectivity. We define a conserved yeast network (CYN) composed of 106 genes and 144 interactions and suggest that this network may help understand the shared biology of diverse eukaryotic species.

SUBMITTER: Dixon SJ 

PROVIDER: S-EPMC2575475 | biostudies-literature | 2008 Oct

REPOSITORIES: biostudies-literature

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Significant conservation of synthetic lethal genetic interaction networks between distantly related eukaryotes.

Dixon Scott J SJ   Fedyshyn Yaroslav Y   Koh Judice L Y JL   Prasad T S Keshava TS   Chahwan Charly C   Chua Gordon G   Toufighi Kiana K   Baryshnikova Anastasija A   Hayles Jacqueline J   Hoe Kwang-Lae KL   Kim Dong-Uk DU   Park Han-Oh HO   Myers Chad L CL   Pandey Akhilesh A   Durocher Daniel D   Andrews Brenda J BJ   Boone Charles C  

Proceedings of the National Academy of Sciences of the United States of America 20081017 43


Synthetic lethal genetic interaction networks define genes that work together to control essential functions and have been studied extensively in Saccharomyces cerevisiae using the synthetic genetic array (SGA) analysis technique (ScSGA). The extent to which synthetic lethal or other genetic interaction networks are conserved between species remains uncertain. To address this question, we compared literature-curated and experimentally derived genetic interaction networks for two distantly relate  ...[more]

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