Quality control of oxidatively damaged mitochondrial proteins is mediated by p97 and the proteasome

Hemion, Charles and Flammer, Josef and Neutzner, Albert. (2014) Quality control of oxidatively damaged mitochondrial proteins is mediated by p97 and the proteasome. Free radical biology and medicine, 75. pp. 121-128.

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Official URL: https://edoc.unibas.ch/62364/

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Protein quality control is essential for maintaining mitochondrial fidelity. Proteins damaged by reactive oxygen species necessitate quality control to prevent mitochondrial dysfunction connected to aging and neurodegeneration. Here we report a role for the AAA ATPase p97/VCP and the proteasome in the quality control of oxidized mitochondrial proteins under low oxidative stress as well as normal conditions. Proteasomal inhibition and blocking p97-dependent protein retrotranslocation interfered with degradation of oxidized mitochondrial proteins. Thus, ubiquitin-dependent, p97-, and proteasome-mediated degradation of oxidatively damaged proteins plays a key role in maintaining mitochondrial fidelity and is likely an important defense mechanism against aging and neurodegeneration.
Faculties and Departments:03 Faculty of Medicine > Departement Biomedizin > Department of Biomedicine, University Hospital Basel > Ocular Pharmacology and Physiology (Neutzner/Meyer)
UniBasel Contributors:Neutzner, Albert
Item Type:Article, refereed
Article Subtype:Research Article
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:03 Aug 2020 12:54
Deposited On:03 Aug 2020 12:54

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