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Genetics. 2008 Aug;179(4):2313-7. doi: 10.1534/genetics.108.089052. Epub 2008 Jul 27.

Incorporation of Y'-Ty1 cDNA destabilizes telomeres in Saccharomyces cerevisiae telomerase-negative mutants.

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  • 1Laboratory of Developmental Genetics, Wadsworth Center and Department of Biomedical Sciences, University at Albany School of Public Health, Albany, New York 12201-2002, USA.


Ty1 retrotransposons in Saccharomyces cerevisiae are activated by telomere erosion. Ty1-dependent reverse transcription of mRNA from subtelomeric Y' repeats generates chimeric Y'-Ty1 cDNA. Here, we show that Y'-Ty1 cDNA is incorporated at eroding telomeres in the absence of telomerase. Telomeric incorporation of Y'-Ty1 cDNA promotes genome rearrangements.

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