Characterization of non-dominant lethal mutations in the yeast plasma membrane H+-ATPase gene.

Abstract excerpt

Site-directed mutants of yeast ATPase were previously studied after introduction of mutant alleles into a yeast strain where these alleles were constitutively expressed while the expression of the wild-type chromosomal ATPase gene was turned off. As a functional H+ pump is essential, strong selective pressure leads to the accumulation of revertants during growth of cells harboring variants with low activity....

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