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Differential regulation of HMG-CoA reductase and Insig-1 by enzymes of the ubiquitin-proteasome system

Authors :
Tsai, Yien Che
Leichner, Gil S.
Pearce, Margaret M. P.
Wilson, Gaye Lynn
Wojcikiewicz, Richard J. H.
Roitelman, Joseph
Weissman, Allan M.
Source :
Molecular Biology of the Cell; December 2012, Vol. 23 Issue: 23 p4484-4494, 11p
Publication Year :
2012

Abstract

HMGCR is subject to Insig-dependent, sterol-accelerated ERAD. gp78 was reported to target HMGCR and Insig-1 for ubiquitination and degradation. Here gp78-mediated Insig-1 degradation is confirmed, but no role for gp78 is found in regulated ERAD of HMGCR. The identity of the HMGCR E3(s) and mechanistic details of HMGCR degradation await further study.

Details

Language :
English
ISSN :
10591524 and 19394586
Volume :
23
Issue :
23
Database :
Supplemental Index
Journal :
Molecular Biology of the Cell
Publication Type :
Periodical
Accession number :
ejs29061028
Full Text :
https://doi.org/10.1091/mbc.e12-08-0631