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Amyloid Fibrils03:03

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Amyloid fibrils are aggregates of misfolded proteins.  Under most circumstances, misfolded proteins are either refolded by chaperone proteins or degraded by the proteasome. However, in the case of a mutation or a disease, these proteins can accumulate to form large clusters and often further assemble to form elongated fibers, called fibrils. 
Amyloid deposits were observed as early as 1639 in the liver and the spleen.   In 1854, Rudolph Virchow performed iodine staining,...
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Rapid Generation of Amyloid from Native Proteins In vitro
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Structure-based design of functional amyloid materials.

Dan Li1, Eric M Jones, Michael R Sawaya

  • 1UCLA-DOE Institute, and Department of Chemistry and Biochemistry, University of California , Los Angeles, California 90095, United States.

Journal of the American Chemical Society
|December 5, 2014
PubMed
Summary
This summary is machine-generated.

Researchers engineered amyloid fibers from peptide atomic structures for novel applications. These designed biological nanomaterials show enhanced carbon dioxide capture and improved gene transfer efficiency.

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Area of Science:

  • Biomaterials Science
  • Nanotechnology
  • Synthetic Biology

Background:

  • Amyloid fibers, traditionally linked to diseases, are now recognized for their potential as biological nanomaterials.
  • Designing amyloid-based materials requires understanding the atomic structures of amyloid peptides.

Purpose of the Study:

  • To develop a method for designing amyloid fibers with specific functionalities using their atomic structures.
  • To demonstrate the utility of designed amyloid fibers in carbon dioxide capture and gene transfer.

Main Methods:

  • Utilizing atomic structures of amyloid peptides to design novel fiber sequences.
  • Testing designed amyloid fibers for carbon dioxide capture efficiency from flue gas (CO2/N2 separation).
  • Evaluating designed amyloid fibers for their efficacy in facilitating retroviral gene transfer (lentiviral transduction).

Main Results:

  • Designed amyloid fibers demonstrated doubled carbon dioxide binding capacity compared to existing Tau protein-derived fibers.
  • Engineered amyloid fibers showed superior efficiency in lentiviral transduction compared to polybrene.
  • The design methodology is adaptable for creating diverse amyloid-based materials.

Conclusions:

  • Amyloid fibers can be rationally designed into functional nanomaterials with tailored properties.
  • Designed amyloid fibers offer promising solutions for carbon capture and gene therapy applications.
  • This approach opens avenues for developing a wide range of novel amyloid-based materials.