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Updated: Mar 5, 2026
Rapid Generation of Amyloid from Native Proteins In vitro
Published on: December 5, 2013
Amyloidogenicity at a Distance: How Distal Protein Regions Modulate Aggregation in Disease
Christina M Lucato1, Christopher J Lupton1, Michelle L Halls2
1Biomedicine Discovery Institute and Department of Biochemistry and Molecular Biology, Monash University, Clayton, Victoria 3800, Australia; Australian Research Council Centre of Excellence in Advanced Molecular Imaging, Monash University, Clayton, Victoria 3800, Australia.
Abstract:
The misfolding of proteins to form amyloid is a key pathological feature of several progressive, and currently incurable, diseases. A mechanistic understanding of the pathway from soluble, native protein to insoluble amyloid is crucial for therapeutic design, and recent efforts have helped to elucidate the key molecular events that trigger protein misfolding. Generally, either global or local structural perturbations occur early in amyloidogenesis to expose aggregation-prone regions of the protein that can then self-associate to form toxic oligomers. Surprisingly, these initiating structural changes are often caused or influenced by protein regions distal to the classically amyloidogenic sequences. Understanding the importance of these distal regions in the pathogenic process has highlighted many remaining knowledge gaps regarding the precise molecular events that occur in classic aggregation pathways. In this review, we discuss how these distal regions can influence aggregation in disease and the recent technical and conceptual advances that have allowed this insight.
Insights
Protein misfolding into amyloid structures drives incurable diseases. Understanding how distant protein regions influence this process is key for developing new therapies against amyloidosis.
Area of Science:
- Biochemistry
- Molecular Biology
- Neurodegenerative Diseases
Background:
- Protein misfolding and amyloid formation are central to incurable diseases like Alzheimer's and Parkinson's.
- Understanding the initial steps of protein misfolding (amyloidogenesis) is critical for therapeutic strategies.
- Current knowledge gaps exist regarding the precise molecular mechanisms driving amyloid aggregation.
Purpose of the Study:
- To review the role of distal protein regions in initiating and influencing amyloid aggregation.
- To highlight recent advances in understanding the pathogenic process of amyloid diseases.
- To identify remaining knowledge gaps in the field of protein misfolding.
Main Methods:
- Literature review of recent technical and conceptual advances.
- Analysis of studies investigating protein structural perturbations and their consequences.
- Discussion of the influence of distal protein regions on aggregation pathways.
Main Results:
- Amyloid formation is triggered by structural changes exposing aggregation-prone regions.
- Distal protein regions, surprisingly, play a significant role in initiating these structural changes.
- These distal regions can influence the self-association of proteins into toxic oligomers.
Conclusions:
- Distal regions are crucial modulators of protein aggregation in amyloid diseases.
- Further research into these distal regions is essential for a complete mechanistic understanding.
- Targeting the influence of distal regions may offer novel therapeutic avenues for amyloidosis.
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