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Updated: Feb 8, 2026
09:44
Generation of Alpha-Synuclein Preformed Fibrils from Monomers and Use In Vivo
Published on: June 2, 2019
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Cryo-EM structure of alpha-synuclein fibrils
Ricardo Guerrero-Ferreira1, Nicholas Mi Taylor1, Daniel Mona2
1Center for Cellular Imaging and NanoAnalytics, Biozentrum, University of Basel, Basel, Switzerland.
Elife
|July 4, 2018
Summary
Researchers determined the structure of cytotoxic alpha-synuclein fibrils, key to Parkinson's disease. This finding reveals insights into fibril formation and stability, aiding the development of new diagnostics and treatments for synucleinopathies.
Area of Science:
- Neuroscience
- Structural Biology
- Biochemistry
Background:
- Parkinson's disease is a synucleinopathy characterized by alpha-synuclein aggregation in neurons.
- Lewy bodies and Lewy neurites are pathological hallmarks of affected neurons.
Purpose of the Study:
- To determine the high-resolution structure of cytotoxic alpha-synuclein fibrils.
- To understand the structural basis of alpha-synuclein fibril formation and stability.
Main Methods:
- Cryo-electron microscopy (cryo-EM) was used to determine the structure.
- The structure of alpha-synuclein fibrils (residues 1-121) was resolved at 3.4 Å resolution.
Main Results:
- The structure reveals a polar fibril composed of two staggered protofilaments.
- The fibril core (residues 38-95) and interface regions (residues 50-57) were well-resolved.
- Familial mutation sites within residues 50-57 contribute to fibril stability.
Conclusions:
- The determined structure provides atomic-level insights into alpha-synuclein fibril formation.
- A hydrophobic cleft suggests a mechanism for fibril elongation.
- This structural information can guide the design of therapeutic and diagnostic agents for synucleinopathies.
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