Reference: He XJ and Fassler JS (2005) Identification of novel Yap1p and Skn7p binding sites involved in the oxidative stress response of Saccharomyces cerevisiae. Mol Microbiol 58(5):1454-67

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Abstract


The Saccharomyces cerevisiae Yap1p and Skn7p transcription factors collaborate in the activation of oxidative stress response (OSR) genes. Although Yap1p and Skn7p oxidative stress response elements (YRE, OSRE) have been characterized and identified in some OSR genes, many OSR genes lack such elements. In this study, the complex, oxidative responsive, CCP1 promoter was used as a model to investigate the cis-acting elements responsible for activation by oxidative stress. In addition to consensus YRE and OSRE sequences, novel Yap1p and Skn7p binding sites were identified in the CCP1 promoter. These new sites were found to mediate Yap1p- and Skn7p-dependent activation of OSR genes including TSA1 and CTT1 previously thought to lack Yap1p and Skn7p binding sites. The novel YREs and OSREs were found to be enriched in the promoter regions of a set of 179 OSR genes. The widespread existence of novel Yap1p and Skn7p binding sites strongly suggest that direct binding of Yap1p and Skn7p is responsible for activation of many more OSR genes than previously believed.

Reference Type
Journal Article | Research Support, N.I.H., Extramural
Authors
He XJ, Fassler JS
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