Reference: Wiltshire C, et al. (1999) Over-expression of Candida albicans mitochondrial ribosomal protein S9 (MrpS9p) disturbs mitochondrial function in Saccharomyces cerevisiae. Yeast 15(2):139-43

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Abstract


A Candida albicans mitochondrial ribosomal protein S9 (MRPS9) cDNA was identified in a screen for sequences whose expression induce galactose lethality in Saccharomyces cerevisiae. MRPS9 appears to encode a protein of 346 amino acids with an N-terminal mitochondrial targeting sequence and an internal S9 signature that is conserved amongst eukaryotic mitochondrial and prokaryotic ribosomal protein S9 sequences. Expression of a GAL1-CaMRPS9 fusion in S. cerevisiae caused the slow development of a galactose-negative phenotype upon repeated subculturing, and this correlated with an increased frequency of petite mutant formation. Therefore, over-expression of CaMRPS9 interferes with S. cerevisiae mitochondrial function, which accounts for the inhibition of growth on galactose.

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Journal Article | Research Support, Non-U.S. Gov't
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Wiltshire C, Black S, Brown AJ
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