Saccharomyces cerevisiae mutants lacking a functional vacuole are defective for aspects of the pheromone response.

Abstract excerpt

The end1 mutant belongs to a group of four vacuolar protein sorting mutants (class C vps) that lack a morphologically distinguishable and functional vacuole. These mutants share several other phenotypes, such as the inability to grow at 37 degrees C or on nonfermentable carbon sources. We show that, as in the case of the end1 mutant, vps16, vps18 and vps33 mutants all internalize but do not degrade alpha-factor....

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