Crossref journal-article
American Society for Cell Biology (ASCB)
Molecular Biology of the Cell (1076)
Abstract

Work from several laboratories has indicated that many different proteins are subject to endoplasmic reticulum (ER) degradation by a common ER-associated machinery. This machinery includes ER membrane proteins Hrd1p/Der3p and Hrd3p and the ER-associated ubiquitin-conjugating enzymes Ubc7p and Ubc6p. The wide variety of substrates for this degradation pathway has led to the reasonable hypothesis that the HRD (Hmg CoA reductase degradation) gene-encoded proteins are generally involved in ER protein degradation in eukaryotes. We have tested this model by directly comparing the HRD dependency of the ER-associated degradation for various ER membrane proteins. Our data indicated that the role of HRD genes in protein degradation, even in this highly defined subset of proteins, can vary from absolute dependence to complete independence. Thus, ER-associated degradation can occur by mechanisms that do not involve Hrd1p or Hrd3p, despite their apparently broad envelope of substrates. These data favor models in which the HRD gene-encoded proteins function as specificity factors, such as ubiquitin ligases, rather than as factors involved in common aspects of ER degradation.

Bibliography

Wilhovsky, S., Gardner, R., & Hampton, R. (2000). HRDGene Dependence of Endoplasmic Reticulum-associated Degradation. Molecular Biology of the Cell, 11(5), 1697–1708.

Authors 3
  1. Sharon Wilhovsky (first)
  2. Richard Gardner (additional)
  3. Randolph Hampton (additional)
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Dates
Type When
Created 12 years, 1 month ago (July 2, 2013, 7:51 p.m.)
Deposited 3 years, 6 months ago (Feb. 26, 2022, 9:41 p.m.)
Indexed 1 year, 3 months ago (May 11, 2024, 4:25 a.m.)
Issued 25 years, 4 months ago (May 1, 2000)
Published 25 years, 4 months ago (May 1, 2000)
Published Print 25 years, 4 months ago (May 1, 2000)
Funders 0

None

@article{Wilhovsky_2000, title={HRDGene Dependence of Endoplasmic Reticulum-associated Degradation}, volume={11}, ISSN={1939-4586}, url={http://dx.doi.org/10.1091/mbc.11.5.1697}, DOI={10.1091/mbc.11.5.1697}, number={5}, journal={Molecular Biology of the Cell}, publisher={American Society for Cell Biology (ASCB)}, author={Wilhovsky, Sharon and Gardner, Richard and Hampton, Randolph}, editor={Schekman, Randy W.}, year={2000}, month=may, pages={1697–1708} }