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Background
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Heat shock transcription factor 1 (HSF1) mediates the induction of heat shock protein gene expression in cells exposed to elevated temperature and other stress conditions. In response to stress, HSF1 acquires DNA-binding ability and localizes to nuclear stress granules. SUMO modification of HSF1 converts HSF1 to the DNA-binding form. HSF1 colocalizes with SUMO-1 in nuclear stress granules, which is prevented by mutation of the HSF1 lysine targeted for sumoylation.
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Background
References
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- Ignatenko, N.A., et al., Exp. Cell Res. 288(1):1-8 (2003).
- Soncin, F., et al., Biochem. Biophys. Res. Commun. 303(2):700-706 (2003).
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