Reference: Pearce DA, et al. (1998) Cyc2p is required for maintaining ionic stability and efficient cytochrome c import and mitochondrial function in Saccharomyces cerevisiae. FEBS Lett 439(3):307-11

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Abstract


A previous study demonstrated that. Cyc2p from Saccharomyces cerevisiae is a mitochondrial protein and that cyc2 mutants contained only approximately 20% of the normal levels of cytochrome c due to a partial deficiency in mitochondrial import of apo-cytochrome c. We report herein that deletion of the entire gene results in defective mitochondrial function, as revealed by diminished growth on media containing nonfermentable carbon sources. This defect is exacerbated in hyper-ionic KCl media and at higher incubation temperatures, but is suppressed on media containing sorbitol, a non-ionic compound. We suggest that Cyc2p serves to maintain the osmotic stability of mitochondria, and its defect is exacerbated by KCl.

Reference Type
Comparative Study | Journal Article | Research Support, U.S. Gov't, P.H.S.
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Pearce DA, Cardillo TS, Sherman F
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