Proteinase yscE, the yeast proteasome/multicatalytic-multifunctional proteinase: mutants unravel its function in stress induced proteolysis and uncover its necessity for cell survival.

Abstract excerpt

Proteinase yscE is the yeast equivalent of the proteasome, a multicatalytic-multifunctional proteinase found in higher eukaryotic cells. We have isolated three mutants affecting the proteolytic activity of proteinase yscE. The mutants show a specific reduction in the activity of the complex against peptide substrates with hydrophobic amino acids at the cleavage site and define two complementation groups, PRE1 and...

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