Cloning and characterization of the lipoyl-protein ligase gene LIPB from the yeast Kluyveromyces lactis: synergistic respiratory deficiency due to mutations in LIPB and mitochondrial F1-ATPase subunits.

Abstract excerpt

The mgi1-4 and mgi2-1 mutants of the petite-negative yeast Kluyveromyces lactis have mutations in the beta- and alpha-subunits of the mitochondrial F1-ATPase, respectively. The mutants are respiratory competent but can form petites with deletions in mitochondrial DNA. In this study a cryptic nuclear mutation (lipB-1) was identified which, in combination with the mgi alleles, displays a synergistic...

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