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Reference: Zhong Q and Greenberg ML (2005) Deficiency in mitochondrial anionic phospholipid synthesis impairs cell wall biogenesis. Biochem Soc Trans 33(Pt 5):1158-61

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Abstract


Cardiolipin (CL) is the signature lipid of the mitochondrial membrane and plays a key role in mitochondrial physiology and cell viability. The importance of CL is underscored by the finding that the severe genetic disorder Barth syndrome results from defective CL composition and acylation. Disruption of PGS1, which encodes the enzyme that catalyses the committed step of CL synthesis, results in loss of the mitochondrial anionic phospholipids phosphatidylglycerol and CL. The pgs1Delta mutant exhibits severe growth defects at 37 degrees C. To understand the essential functions of mitochondrial anionic lipids at elevated temperatures, we isolated suppressors of pgs1Delta that grew at 37 degrees C. The present review summarizes our analysis of suppression of pgs1Delta growth defects by a mutant that has a loss-of-function mutation in KRE5, a gene involved in cell wall biogenesis.

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Journal Article
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Zhong Q, Greenberg ML
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