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Resolving the nanoscale structure of β-sheet assemblies using single-molecule orientation-localization microscopy.

Weiyan Zhou1, Conor L O'Neill2, Tianben Ding1

  • 1Department of Electrical and Systems Engineering, McKelvey School of Engineering, Washington University in St. Louis, MO 63130, USA.

Biorxiv : the Preprint Server for Biology
|September 25, 2023
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Summary
This summary is machine-generated.

Single-molecule orientation-localization microscopy (SMOLM) precisely characterizes engineered and pathological fibrils. This technique reveals structural differences and polymorphism in cross-β fibrils, crucial for biomaterial development.

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Area of Science:

  • Biomaterials Science
  • Structural Biology
  • Chemical Engineering

Background:

  • Synthetic peptides self-assemble into cross-β fibrils for biomaterials.
  • Structural similarity to amyloid species hinders translation.
  • Characterizing fibril polymorphs is challenging with ensemble averaging techniques.

Conclusions:

  • SMOLM is a powerful tool for interrogating structural differences in cross-β fibrils.
  • The technique can differentiate between engineered and pathological fibril structures.
  • SMOLM effectively characterizes fibril polymorphism, aiding in biomaterial development and understanding amyloid diseases.