Format

Send to

Choose Destination
Semin Cell Dev Biol. 2012 Jul;23(5):530-7. doi: 10.1016/j.semcdb.2011.12.006. Epub 2012 Jan 8.

Selective destruction of abnormal proteins by ubiquitin-mediated protein quality control degradation.

Author information

1
Department of Pharmacology, University of Washington, Seattle, WA 98195, USA.

Abstract

Misfolded proteins are continuously produced in the cell and present an escalating detriment to cellular physiology if not managed effectively. As such, all organisms have evolved mechanisms to address misfolded proteins. One primary way eukaryotic cells handle the complication of misfolded proteins is by destroying them through the ubiquitin-proteasome system. To do this, eukaryotes possess specialized ubiquitin-protein ligases that have the capacity to recognize misfolded proteins over normally folded proteins. The strategies used by these Protein Quality Control (PQC) ligases to target the wide variety of misfolded proteins in the cell will likely be different than those used by ubiquitin-protein ligases that function in regulated degradation to target normally folded proteins. In this review, we highlight what is known about how misfolded proteins are recognized by PQC ubiquitin-protein ligases.

PMID:
22245831
PMCID:
PMC3345107
DOI:
10.1016/j.semcdb.2011.12.006
[Indexed for MEDLINE]
Free PMC Article

Supplemental Content

Full text links

Icon for Elsevier Science Icon for PubMed Central
Loading ...
Support Center