Cited by 230Parkinson's Disease Mechanisms and TreatmentsAutophagy in Disease and TherapyUbiquitin and proteasome pathways

Parkin promotes the ubiquitination and degradation of the mitochondrial fusion factor mitofusin 1

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Glauser, Liliane, Sonnay, Sarah, Stafa, Klodjan, Moore, Darren J.·2011·Journal of Neurochemistry

Abstract

Mutations in the parkin gene cause early-onset, autosomal recessive Parkinson's disease. Parkin functions as an E3 ubiquitin ligase to mediate the covalent attachment of ubiquitin monomers or linked chains to protein substrates. Substrate ubiquitination can target proteins for proteasomal degradation or can mediate a number of non-degradative functions. Parkin has been shown to preserve mitochondrial integrity in a number of experimental systems through the regulation of mitochondrial fission. Upon mitochondrial damage, parkin translocates to mitochondria to mediate their selective elimination by autophagic degradation. The mechanism underlying this process remains unclear. Here, we demonstrate that parkin interacts with and selectively mediates the atypical poly-ubiquitination of the mitochondrial fusion factor, mitofusin 1, leading to its enhanced turnover by proteasomal degradation. Our data supports a model whereby the translocation of parkin to damaged mitochondria induces the degradation of mitofusins leading to impaired mitochondrial fusion. This process may serve to selectively isolate damaged mitochondria for their removal by autophagy.

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Crossref · 10.1111/j.1471-4159.2011.07318.x

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  • During mitophagy, parkin ubiquitinates Mfn1, leading to its proteasomal degradation and fusion inhibition.

    “During mitophagy, parkin ubiqitinates Mfn1, leading to its proteasomal degradation and fusion inhibition8,43.”
  • Once activated, Parkin facilitates ubiquitination of numerous outer mitochondrial membrane proteins, including Mfn1, Mfn2, VDAC, Tom20, and Miro.

    “Once activated, Parkin has been reported to facilitate ubiquitination of numerous OMM proteins, including Mfn1 [126,127,128], Mfn2 [129], VDAC [130], Tom20 (translocase of the outer membrane 20) [121], and Miro [131].”

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Authors
Glauser, L., Sonnay, S., Stafa, K., & Moore, D. J.
Affiliations
École Polytechnique Fédérale de Lausanne (CH)
Corresponding author
Moore, Darren J.
Venue
Journal of Neurochemistry
Publisher
Wiley
Published
2011-06-06
Volume
118
Issue
4
Pages
636-645
ISSN
  • 0022-3042 (ISSN-L)
  • 1471-4159
OpenAlex
W1508962729
Cited by
230
References
38
Citations by year
2024: 5 · 2023: 11 · 2022: 13 · 2021: 19 · 2020: 18 · 2019: 18 · 2018: 15 · 2017: 19 · 2016: 15 · 2015: 20 · 2014: 23 · 2013: 23 · 2012: 27
FWCI
15.64
Type
journal article
Language
en
Open access
Locations
  • Journal of Neurochemistry (publishedVersion)
  • PubMed (publishedVersion)
  • Infoscience (Ecole Polytechnique Fédérale de Lausanne) (submittedVersion)
  • Infoscience (Ecole Polytechnique Fédérale de Lausanne) (submittedVersion, cc-by-nc-nd)
Funders
  • Mesothelioma Applied Research Foundation
  • Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung
Topics
  • Health Sciences › Medicine › Neurology › Parkinson's Disease Mechanisms and Treatments
  • Health Sciences › Medicine › Epidemiology › Autophagy in Disease and Therapy
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Ubiquitin and proteasome pathways
Keywords
Parkin, mitofusin 1, E3 ubiquitin ligase, polyubiquitination, proteasomal degradation, mitochondrial fusion, mitochondrial damage, selective autophagy, Parkinson's disease, protein turnover
MeSH terms
Cell Fractionation, Humans, Membrane Proteins, Mitochondria, Mutation, Parkinson Disease, Plasmids, Blotting, Western, GTP Phosphohydrolases, Mitochondrial Proteins, Membrane Transport Proteins, Mitochondrial Membrane Transport Proteins, Ubiquitin-Protein Ligases, Cell Line, Tumor, Proteasome Endopeptidase Complex, Immunoprecipitation, Ubiquitination

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