Interaction between checkpoint genes RAD9, RAD17, RAD24, and RAD53 involved in the determination of yeast Saccharomyces cerevisiae sensitivity to ionizing radiation

Interaction between checkpoint genes RAD9, RAD17, RAD24, and RAD53 involved in the determination... Mechanisms for genetic control of cell division cycle (checkpoint control) have been studied in most detail in yeast Saccharomyces cerevisiae. To clarify the role of checkpoint genes RAD9, RAD17, RAD24, and RAD53 in cell radioresistance, double mutants were analyzed for cell sensitivity to ionizing radiation. Double mutants carrying mutations in combination with mutation rad9Δ were shown to manifest the epistatic type of interaction. Our results suggest that checkpoint genes RAD9, RAD17, RAD24, and RAD53 belong to a single epistatic group designated RAD9 and govern the same pathway. Genes RAD9 and RAD53 have a positive effect on sensitivity to γ-radiation, whereas RAD17 and RAD24 have a negative effect. Interactions between mutations may differ when considering their sensitivity to γ-radiation and UV light; mutations rad9Δ and rad24Δ were shown to manifest the additive effect in the first case and epistatic effect in the second. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Genetics Springer Journals

Interaction between checkpoint genes RAD9, RAD17, RAD24, and RAD53 involved in the determination of yeast Saccharomyces cerevisiae sensitivity to ionizing radiation

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Publisher
Springer Journals
Copyright
Copyright © 2008 by MAIK Nauka
Subject
Biomedicine; Microbial Genetics and Genomics; Animal Genetics and Genomics; Human Genetics
ISSN
1022-7954
eISSN
1608-3369
D.O.I.
10.1134/S1022795408060057
Publisher site
See Article on Publisher Site

Abstract

Mechanisms for genetic control of cell division cycle (checkpoint control) have been studied in most detail in yeast Saccharomyces cerevisiae. To clarify the role of checkpoint genes RAD9, RAD17, RAD24, and RAD53 in cell radioresistance, double mutants were analyzed for cell sensitivity to ionizing radiation. Double mutants carrying mutations in combination with mutation rad9Δ were shown to manifest the epistatic type of interaction. Our results suggest that checkpoint genes RAD9, RAD17, RAD24, and RAD53 belong to a single epistatic group designated RAD9 and govern the same pathway. Genes RAD9 and RAD53 have a positive effect on sensitivity to γ-radiation, whereas RAD17 and RAD24 have a negative effect. Interactions between mutations may differ when considering their sensitivity to γ-radiation and UV light; mutations rad9Δ and rad24Δ were shown to manifest the additive effect in the first case and epistatic effect in the second.

Journal

Russian Journal of GeneticsSpringer Journals

Published: Jul 2, 2008

References

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