Cell phenotypes of a mutant in the gene encoding a Rad51 paralog in fission yeast

Cell phenotypes of a mutant in the gene encoding a Rad51 paralog in fission yeast The discovery of three Rad51 paralogs in Saccharomyces cerevisiae (Rad55, Rad57, and Dmc1), four in Schizosaccharomyces pombe (Rhp55, Rhp57, Rlp1, and Dmc1), and six in human (Rad51B, Rad51C, Rad51D, Xrcc2, Xrcc3, and Dmc1) indicate the functional diversity and specialization of RecA-like proteins in the line from the lower to higher organisms. This paper reports characterization of a number of mitotic and meiotic phenotypes of the cells mutant in rlp1 gene, encoding a paralog of Rad51, in fission yeasts. No evident role of Rlp1 protein in the repair of spontaneous lesions emerging during mating type switching was found. Rlp1 does not interact physically with Dmc1. An elevated expression of rhp51 has a dominant negative effect on the cell survivability of rlp1Δ mutant exposed to a DNA-damaging agent. We assume that Rlp1 acts at the stages of recombination connected with disassembling of the nucleoprotein filament formed by Rhp51 protein. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Genetics Springer Journals

Cell phenotypes of a mutant in the gene encoding a Rad51 paralog in fission yeast

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Publisher
Nauka/Interperiodica
Copyright
Copyright © 2007 by Pleiades Publishing, Inc.
Subject
Biomedicine; Human Genetics; Animal Genetics and Genomics; Microbial Genetics and Genomics
ISSN
1022-7954
eISSN
1608-3369
D.O.I.
10.1134/S1022795407020056
Publisher site
See Article on Publisher Site

Abstract

The discovery of three Rad51 paralogs in Saccharomyces cerevisiae (Rad55, Rad57, and Dmc1), four in Schizosaccharomyces pombe (Rhp55, Rhp57, Rlp1, and Dmc1), and six in human (Rad51B, Rad51C, Rad51D, Xrcc2, Xrcc3, and Dmc1) indicate the functional diversity and specialization of RecA-like proteins in the line from the lower to higher organisms. This paper reports characterization of a number of mitotic and meiotic phenotypes of the cells mutant in rlp1 gene, encoding a paralog of Rad51, in fission yeasts. No evident role of Rlp1 protein in the repair of spontaneous lesions emerging during mating type switching was found. Rlp1 does not interact physically with Dmc1. An elevated expression of rhp51 has a dominant negative effect on the cell survivability of rlp1Δ mutant exposed to a DNA-damaging agent. We assume that Rlp1 acts at the stages of recombination connected with disassembling of the nucleoprotein filament formed by Rhp51 protein.

Journal

Russian Journal of GeneticsSpringer Journals

Published: Feb 24, 2007

References

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