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Computation of Atmospheric Concentrations of Molecular Clusters from ab initio Thermochemistry
12:11

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Published on: April 8, 2020

Model for amorphous aggregation processes.

Samuel D Stranks1, Heath Ecroyd, Steven Van Sluyter

  • 1School of Chemistry and Physics, The University of Adelaide, South Australia 5005, Australia.

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
|April 7, 2010
PubMed
Summary
This summary is machine-generated.

This study introduces a new model for amorphous protein aggregation, applicable beyond wine haze to colloids and nanoclusters. The robust model accurately describes experimental data and reveals aggregation details.

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Area of Science:

  • Biochemistry
  • Materials Science
  • Physical Chemistry

Background:

  • Amorphous protein aggregation causes issues like wine haze, cataracts, and recombinant protein precipitation.
  • Existing models primarily address linear aggregation (e.g., amyloid fibrils), with limited focus on amorphous forms.

Purpose of the Study:

  • To propose and validate a novel model for amorphous protein aggregation.
  • To demonstrate the model's applicability to diverse systems, including colloids and nanoclusters.

Main Methods:

  • Development of a new mathematical model for amorphous protein aggregation.
  • Testing the model against experimental turbidimetry data for thaumatin, thaumatin-like protein, and alpha-lactalbumin.

Main Results:

  • The proposed model robustly and accurately describes experimental amorphous aggregation data.
  • The model successfully captures aggregation phenomena in wine proteins, colloids, and nanoclusters.
  • Key aggregation parameters, including aggregate shape and rate constants, can be extracted.

Conclusions:

  • The new model provides a powerful tool for understanding and quantifying amorphous protein aggregation.
  • This approach has broad applicability in biochemistry, food science, and materials science.
  • The model facilitates detailed analysis of protein aggregation processes.