Cited by 1,053Parkinson's Disease Mechanisms and TreatmentsUbiquitin and proteasome pathwaysNuclear Receptors and Signaling

Ubiquitination of a new form of α-synuclein by parkin from human brain: implications for Parkinson's disease

Shimura, Hideki, Schlossmacher, Michael G., Hattori, Nobutaka, Frosch, Matthew P., Trockenbacher, Alexander, Schneider, Rainer, Mizuno, Yoshikuni, Kosik, Kenneth S. +1 more·2001·Science

Abstract

Parkinson's disease (PD) is a common neurodegenerative disorder characterized by the progressive accumulation in selected neurons of protein inclusions containing alpha-synuclein and ubiquitin. Rare inherited forms of PD are caused by autosomal dominant mutations in alpha-synuclein or by autosomal recessive mutations in parkin, an E3 ubiquitin ligase. We hypothesized that these two gene products interact functionally, namely, that parkin ubiquitinates alpha-synuclein normally and that this process is altered in autosomal recessive PD. We have now identified a protein complex in normal human brain that includes parkin as the E3 ubiquitin ligase, UbcH7 as its associated E2 ubiquitin conjugating enzyme, and a new 22-kilodalton glycosylated form of alpha-synuclein (alphaSp22) as its substrate. In contrast to normal parkin, mutant parkin associated with autosomal recessive PD failed to bind alphaSp22. In an in vitro ubiquitination assay, alphaSp22 was modified by normal but not mutant parkin into polyubiquitinated, high molecular weight species. Accordingly, alphaSp22 accumulated in a non-ubiquitinated form in parkin-deficient PD brains. We conclude that alphaSp22 is a substrate for parkin's ubiquitin ligase activity in normal human brain and that loss of parkin function causes pathological alphaSp22 accumulation. These findings demonstrate a critical biochemical reaction between the two PD-linked gene products and suggest that this reaction underlies the accumulation of ubiquitinated alpha-synuclein in conventional PD.

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Crossref · 10.1126/science.1060627

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Authors
Shimura, H., Schlossmacher, M. G., Hattori, N., Frosch, M. P., Trockenbacher, A., Schneider, R., Mizuno, Y., Kosik, K. S., & Selkoe, D. J.
Affiliations
  • Center for Neurologic Diseases,
  • Juntendo University (JP)
  • Brigham and Women's Hospital (US)
  • Universität Innsbruck (AT)
Corresponding author
  • Shimura, Hideki
  • Schlossmacher, Michael G.
  • Kosik, Kenneth S.
  • Selkoe, Dennis J.
Venue
Science
Published
2001-07-13
Volume
293
Issue
5528
Pages
263-269
ISSN
  • 0036-8075 (ISSN-L)
  • 1095-9203
OpenAlex
W2076344205
Cited by
1,053
References
36
Citations by year
2026: 11 · 2025: 8 · 2024: 28 · 2023: 23 · 2022: 25 · 2021: 21 · 2020: 17 · 2019: 12 · 2018: 18 · 2017: 26 · 2016: 13 · 2015: 27 · 2014: 25 · 2013: 26 · 2012: 38
FWCI
83.87
Type
journal article
Language
en
Open access
closed
Locations
  • Science (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Institute of Neurological Disorders and Stroke (NS 02127, K08NS002127, NS 38375, P50NS038375)
Topics
  • Health Sciences › Medicine › Neurology › Parkinson's Disease Mechanisms and Treatments
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Ubiquitin and proteasome pathways
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Nuclear Receptors and Signaling
Keywords
Parkinson's disease, alpha-synuclein, Parkin, ubiquitination, E3 ubiquitin ligase, UbcH7, E2 ubiquitin-conjugating enzyme, protein aggregation, ubiquitin, human brain
MeSH terms
Brain, Brain Stem, Cell Line, Detergents, Freezing, Glycosylation, Humans, Ligases, Nerve Tissue Proteins, Parkinson Disease, Substrate Specificity, Ubiquitins, Lewy Bodies, Mutation, Missense, Parkinsonian Disorders, Ubiquitin-Conjugating Enzymes, Ubiquitin-Protein Ligases, Synucleins, alpha-Synuclein

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