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Reference: Gao Q, et al. (2011) Mitochondrial DNA protects against salt stress-induced cytochrome c-mediated apoptosis in yeast. FEBS Lett 585(15):2507-12

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Abstract

Here we report that budding yeast mitochondrial DNA protects against salt stress-induced apoptosis. Yeast cells lacking mitochondrial DNA (?(0)) are hypersensitive to salt stress-induced apoptosis, which is mediated by mitochondrial cytochrome c release. In addition, cytochrome c expression is downregulated upon salt stress, suggesting a transcriptionally regulated, homeostatic protection mechanism. The repression of cytochrome c transcription is mediated by transcription factor Mig1. Consistently, deletion of MIG1 induces cytochrome C transcription and yields ?(0) cells that are more sensitive to salt stress. In summary, deletion of mitochondrial function leads to salt stress-induced transcriptional deregulation of cytochrome C, causing apoptosis in yeast.

Reference Type
Journal Article
Authors
Gao Q, Ren Q, Liou LC, Bao X, Zhang Z
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