Different respiratory-defective phenotypes of Neurospora crassa and Saccharomyces cerevisiae after inactivation of the gene encoding the mitochondrial acyl carrier protein
1995
Schneider, R. | Massow, M. | Lisowsky, T. | Weiss, H.
The nuclear genes (acp-1, ACP1) encoding the mitochondrial acyl carrier protein were disrupted in Neurospora crassa and Saccharomyces cerevisiae. In N. crassa acp-1 is a peripheral subunit of the respiratory NADH: ubiquinone oxidoreductase (complex I). S. cerevisiae lacks complex I and its ACP1 appears to be located in the mitochondrial matrix. The loss of acp-1 in N. crassa causes two biochemical lesions. Firstly, the peripheral part of complex I is not assembled, and the membrane part is not properly assembled. The respiratory ubiquinol:cytochrome c oxidoreductase (complex III) and cytochrome c oxidase (complex IV) are made in normal amounts. Secondly, the lysophospholipid content of mitochondrial membranes is increased four-fold. In S. cerevisiae, the loss of ACP1 leads to a pleiotropic respiratory deficient phenotype.
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