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Protein Fibrillation under Crowded Conditions.
Annelise H Gorensek-Benitez1, Bryan Kirk2, Jeffrey K Myers3
1Department of Chemistry and Biochemistry, Colorado College, Colorado Springs, CO 80903, USA.
Biomolecules
|July 27, 2022
Summary
Protein amyloid fibril formation is crucial for human health. This review examines how various crowding agents, including polymers, osmolytes, and proteins, affect fibrillation, revealing highly variable outcomes dependent on specific protein-crowder interactions.
Area of Science:
- Biochemistry
- Molecular Biology
- Structural Biology
Background:
- Protein amyloid fibrils are implicated in numerous human diseases.
- Cellular environments contain crowding agents that influence protein folding and aggregation.
- Understanding fibrillation mechanisms is vital for therapeutic development.
Purpose of the Study:
- To review and categorize the effects of different crowding agents on protein fibrillation.
- To identify patterns and variability in fibrillation pathways influenced by crowding.
- To provide a comprehensive resource for researchers studying protein aggregation.
Main Methods:
- Systematic tabulation of studies involving crowding agents and protein fibrillation.
- Classification of crowding agents into three main categories: synthetic polymers, osmolytes/small molecules, and globular proteins.
- Analysis of reported outcomes across diverse protein-crowder systems.
Main Results:
- Observed patterns in fibrillation exist for specific crowding agents.
- Fibrillation outcomes are highly variable across different crowder-protein pairings.
- No universal effect of crowding agents on fibrillation was identified.
Conclusions:
- Crowding agents significantly influence protein amyloid fibril formation.
- The specific interaction between a crowding agent and a fibrillating protein is a critical determinant of the outcome.
- Further research is needed to elucidate the precise mechanisms underlying these variable effects.
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