Abstract
Secretion of proteins is initiated by their uptake into the endoplasmic reticulum (ER), which possesses a proteolytic system able to degrade misfolded and nonassembled proteins. The ER degradation system was studied with yeast mutants defective in the breakdown of a mutated soluble vacuolar protein, carboxypeptidase yscY (CPY*). The ubiquitin-conjugating enzyme Ubc7p participated in the degradation process, which was mediated by the cytosolic 26 S proteasome. It is likely that CPY* entered the ER, was glycosylated, and was then transported back out of the ER lumen to the cytoplasmic side of the organelle, where it was conjugated with ubiquitin and degraded.
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Dates
Type | When |
---|---|
Created | 18 years, 10 months ago (Oct. 27, 2006, 2:30 p.m.) |
Deposited | 1 year ago (Aug. 7, 2024, 7:40 a.m.) |
Indexed | 5 days, 17 hours ago (Aug. 24, 2025, 6:51 p.m.) |
Issued | 28 years, 11 months ago (Sept. 20, 1996) |
Published | 28 years, 11 months ago (Sept. 20, 1996) |
Published Print | 28 years, 11 months ago (Sept. 20, 1996) |
@article{Hiller_1996, title={ER Degradation of a Misfolded Luminal Protein by the Cytosolic Ubiquitin-Proteasome Pathway}, volume={273}, ISSN={1095-9203}, url={http://dx.doi.org/10.1126/science.273.5282.1725}, DOI={10.1126/science.273.5282.1725}, number={5282}, journal={Science}, publisher={American Association for the Advancement of Science (AAAS)}, author={Hiller, Mark M. and Finger, Andreas and Schweiger, Markus and Wolf, Dieter H.}, year={1996}, month=sep, pages={1725–1728} }