Cited by 1,477Parkinson's Disease Mechanisms and TreatmentsUbiquitin and proteasome pathwaysAutophagy in Disease and Therapy

Ubiquitin is phosphorylated by PINK1 to activate parkin

Koyano, Fumika, Okatsu, Kei, Kosako, Hidetaka, Tamura, Yasushi, Go, Etsu, Kimura, Mayumi, Kimura, Yoko, Tsuchiya, Hikaru +8 more·2014·Nature

Abstract

PINK1 (PTEN induced putative kinase 1) and PARKIN (also known as PARK2) have been identified as the causal genes responsible for hereditary recessive early-onset Parkinsonism. PINK1 is a Ser/Thr kinase that specifically accumulates on depolarized mitochondria, whereas parkin is an E3 ubiquitin ligase that catalyses ubiquitin transfer to mitochondrial substrates. PINK1 acts as an upstream factor for parkin and is essential both for the activation of latent E3 parkin activity and for recruiting parkin onto depolarized mitochondria. Recently, mechanistic insights into mitochondrial quality control mediated by PINK1 and parkin have been revealed, and PINK1-dependent phosphorylation of parkin has been reported. However, the requirement of PINK1 for parkin activation was not bypassed by phosphomimetic parkin mutation, and how PINK1 accelerates the E3 activity of parkin on damaged mitochondria is still obscure. Here we report that ubiquitin is the genuine substrate of PINK1. PINK1 phosphorylated ubiquitin at Ser 65 both in vitro and in cells, and a Ser 65 phosphopeptide derived from endogenous ubiquitin was only detected in cells in the presence of PINK1 and following a decrease in mitochondrial membrane potential. Unexpectedly, phosphomimetic ubiquitin bypassed PINK1-dependent activation of a phosphomimetic parkin mutant in cells. Furthermore, phosphomimetic ubiquitin accelerates discharge of the thioester conjugate formed by UBCH7 (also known as UBE2L3) and ubiquitin (UBCH7∼ubiqui…

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Crossref · 10.1038/nature13392

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  • Upon mitochondrial depolarization, PINK1 stabilizes on the outer mitochondrial membrane and phosphorylates ubiquitin and PRKN at Ser65.

    “Upon mitochondrial depolarization, PINK1 stabilizes on the outer mitochondrial membrane, where it phosphorylates ubiquitin (Ub) and PRKN at Ser65 [5–10].”
  • Phosphorylation of ubiquitin and PRKN at Ser65 by PINK1 is required for activation of the PINK1-PRKN pathway.

    “Both events are required for the activation of the pathway.”
  • PINK1 also phosphorylates ubiquitin at Ser65 (pUbS65) and PINK1-dependent phosphorylation of ubiquitin is required for translocation and activation of Parkin to initiate mitophagy.

    “Recently, several groups discovered that PINK1 also phosphorylates ubiquitin at Ser65 (pUbS65) and PINK1-dependent phosphorylation of ubiquitin is required for translocation and activation of Parkin to initiate mitophagy [16–18].”

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Authors
Koyano, F., Okatsu, K., Kosako, H., Tamura, Y., Go, E., Kimura, M., Kimura, Y., Tsuchiya, H., Yoshihara, H., Hirokawa, T., Endo, T., Fon, E. A., Trempe, J.-F., Saeki, Y., Tanaka, K., & Matsuda, N.
Affiliations
  • Tokyo Metropolitan Institute of Medical Science (JP)
  • Fujii Memorial Institute of Medical Sciences, Tokushima University (JP)
  • Nagoya University Research Center for Materials Science (JP)
  • Shizuoka University (JP)
  • National Institute of Advanced Industrial Science and Technology (JP)
  • Kyoto Sangyo University (JP)
  • Montreal Neurological Institute and Hospital (CA)
  • McGill University (CA)
Corresponding author
  • Tanaka, Keiji
  • Matsuda, Noriyuki
Venue
Nature
Published
2014-06
Volume
510
Issue
7503
Pages
162-166
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W2052889619
Cited by
1,477
References
6
Citations by year
2026: 85 · 2025: 100 · 2024: 129 · 2023: 91 · 2022: 118 · 2021: 162 · 2020: 149 · 2019: 117 · 2018: 121 · 2017: 117 · 2016: 136 · 2015: 108 · 2014: 43
FWCI
87.77
Type
journal article
Language
en
Open access
closed
Locations
  • Nature (publishedVersion)
  • PubMed (publishedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
Funders
  • Canadian Institutes of Health Research
  • Japan Society for the Promotion of Science (24657072, 23570231, 22227003, 21000012, 26440070, 26650042, 25870311, 26440101, 24112008, 26000014)
Topics
  • Health Sciences › Medicine › Neurology › Parkinson's Disease Mechanisms and Treatments
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Ubiquitin and proteasome pathways
  • Health Sciences › Medicine › Epidemiology › Autophagy in Disease and Therapy
Keywords
ubiquitin phosphorylation, PINK1, Parkin, mitochondrial quality control, mitochondrial depolarization, Parkinson's disease, ubiquitin ligase, protein kinases, mitochondrial dysfunction, phosphopeptides, protein-protein interaction
MeSH terms
PTEN-Induced Putative Kinase, Animals, Enzyme Activation, Fibroblasts, HeLa Cells, Humans, Mitochondria, Mutation, Parkinson Disease, Phosphorylation, Phosphoserine, Protein Kinases, Ubiquitin, Ubiquitin-Protein Ligases, Mice, Membrane Potential, Mitochondrial, Ubiquitination

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