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- W1965884484 abstract "Mitochondrial dysfunction has been shown to elicit broad effects on nuclear gene expression. We show here that transcription dependent on the prototypical acidic activator Gal4 is responsive to mitochondrial dysfunction. In cells with no mitochondrial DNA, Gal4-dependent gene expression is elevated. A minimal Gal4 activator containing the DNA binding and activation domain is sufficient for this response. Transcription dependent on a fusion of Gal4 to a heterologous DNA binding domain is similarly elevated in a mitochondrial mutant. Analysis of different Gal4-dependent promoters and gel mobility shift assays suggest that the effect of mitochondrial dysfunction on Gal4 activity is related to increased DNA binding to the cognate Gal4 element. Given that fermentation is the only means to obtain energy in respiratory deficient cells, it is possible that higher Gal4 activity in cells with dysfunctional mitochondria works to promote more efficient fermentation of galactose." @default.
- W1965884484 created "2016-06-24" @default.
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- W1965884484 date "2005-12-01" @default.
- W1965884484 modified "2023-10-16" @default.
- W1965884484 title "Mitochondrial dysfunction enhances Gal4-dependent transcription" @default.
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- W1965884484 doi "https://doi.org/10.1016/j.femsle.2005.09.033" @default.
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