Cited by 1,375Parkinson's Disease Mechanisms and TreatmentsMitochondrial Function and PathologyAutophagy in Disease and Therapy

Mitochondrial membrane potential regulates PINK1 import and proteolytic destabilization by PARL

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Jin, Seok Min, Lazarou, Michael, Wang, Chunxin, Kane, Lesley A., Narendra, Derek P., Youle, Richard J.·2010·Journal of Cell Biology

Abstract

PINK1 is a mitochondrial kinase mutated in some familial cases of Parkinson’s disease. It has been found to work in the same pathway as the E3 ligase Parkin in the maintenance of flight muscles and dopaminergic neurons in Drosophila melanogaster and to recruit cytosolic Parkin to mitochondria to mediate mitophagy in mammalian cells. Although PINK1 has a predicted mitochondrial import sequence, its cellular and submitochondrial localization remains unclear in part because it is rapidly degraded. In this study, we report that the mitochondrial inner membrane rhomboid protease presenilin-associated rhomboid-like protein (PARL) mediates cleavage of PINK1 dependent on mitochondrial membrane potential. In the absence of PARL, the constitutive degradation of PINK1 is inhibited, stabilizing a 60-kD form inside mitochondria. When mitochondrial membrane potential is dissipated, PINK1 accumulates as a 63-kD full-length form on the outer mitochondrial membrane, where it can recruit Parkin to impaired mitochondria. Thus, differential localization to the inner and outer mitochondrial membranes appears to regulate PINK1 stability and function.

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  • PINK1 stabilization on depolarized mitochondria results from impaired mitochondrial import and proteolytic processing, allowing full-length PINK1 to accumulate at the outer mitochondrial membrane.

    “PINK1 stabilization on depolarized mitochondria results from impaired mitochondrial import and proteolytic processing, allowing full-length PINK1 to accumulate at the outer mitochondrial membrane [57, 58].”

    From miRNA family miR-29 inhibits PINK1-PRKN signaling via ATG9A (2026) · cites this paper as [57]

  • PARL modulates mitophagy by degrading the mitophagy protein PINK1.

    “PARL modulates mitophagy by degrading the mitophagy protein PINK1 [38].”
  • PINK1 is constitutively degraded by mitochondrial proteases and the ubiquitin-proteasome pathway in a mitochondrial membrane potential (ΔΨm)-dependent manner.

    “The PINK1 mitochondrial serine/threonine protein kinase is constitutively degraded by a combination of mitochondrial proteases and the ubiquitin-proteasome pathway in a mitochondrial membrane potential (ΔΨm)-dependent manner (Jin et al., 2010).”

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Authors
Jin, S. M., Lazarou, M., Wang, C., Kane, L. A., Narendra, D. P., & Youle, R. J.
Affiliations
National Institutes of Health (US)
Corresponding author
Youle, Richard J.
Venue
Journal of Cell Biology
Published
2010-11-29
Volume
191
Issue
5
Pages
933-942
ISSN
  • 0021-9525 (ISSN-L)
  • 1540-8140
OpenAlex
W2038834667
Cited by
1,375
References
34
Citations by year
2026: 89 · 2025: 88 · 2024: 108 · 2023: 92 · 2022: 93 · 2021: 129 · 2020: 116 · 2019: 90 · 2018: 85 · 2017: 81 · 2016: 81 · 2015: 77 · 2014: 76 · 2013: 73 · 2012: 65
FWCI
31.87
Type
journal article
Language
en
Open access
Licence
cc-by-nc-sa
Locations
  • The Journal of Cell Biology (publishedVersion, cc-by-nc-sa)
  • PubMed Central (publishedVersion, cc-by-nc-sa)
  • PubMed (publishedVersion)
Funders
National Institutes of Health
Topics
  • Health Sciences › Medicine › Neurology › Parkinson's Disease Mechanisms and Treatments
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
  • Health Sciences › Medicine › Epidemiology › Autophagy in Disease and Therapy
Keywords
PINK1, PARL, mitochondrial membrane potential, mitochondrial protein import, protein degradation, Parkin, mitophagy, Parkinson's disease, rhomboid protease, mitochondrial outer membrane, inner mitochondrial membrane, protein stability
MeSH terms
PTEN-Induced Putative Kinase, Animals, HeLa Cells, Humans, Protein Kinases, Transfection, Mitochondrial Proteins, RNA, Small Interfering, Metalloproteases, Mice, Membrane Potential, Mitochondrial

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