Regulated import and degradation of a cytosolic protein in the yeast vacuole.

Chiang, H L; Schekman, R · Nature · 1991

basic_science · Level V

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Abstract

The key regulatory enzyme in gluconeogenesis, fructose 1,6-bisphosphatase (FBPase) is subject to glucose-stimulated proteolytic degradation in Saccharomyces cerevisiae. This process involves the regulated transfer of FBPase directly from the cytosol into the vacuole or a vacuole-related organelle. Glucose may regulate the production of an FBPase receptor or import factor that is transported to the vacuole through the secretory pathway.

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