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Appl Microbiol Biotechnol. 2010 Jul;87(4):1447-54. doi: 10.1007/s00253-010-2562-y.

Retrotransposon expression in ethanol-stressed Saccharomyces cerevisiae.

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School of Engineering and Science, Victoria University, Melbourne, Victoria 8001, Australia.


There are five retrotransposon families in Saccharomyces cerevisiae, three (Ty1, Ty2, and Ty3) of which are known to be transcriptionally active. Early investigations reported yeast retrotransposons to be stress-induced; however, microarray-based studies do not report retrotransposition-related Gene Ontology (GO) categories in the ethanol stress response of S. cerevisiae. In this study, microarray technology was used to investigate the ethanol stress response of S. cerevisiae W303-1A, and the highest stress-induced GO categories, based on z-score, were found to be retrotransposition-related, namely, Retrotransposition Nucleocapsid and Transposition, RNA-Mediated. Further investigation, involving reanalysis of previously published results on the stress response of S. cerevisiae, identified the absence of annotation for retrotransposon genes and associated GO categories and their omission during the printing of spotted arrays as two reasons why these categories in previous gene expression studies on the ethanol stress response of yeast were not reported.

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