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Attractive adsorbate interaction in biological surface reactions

H Nygren1

  • 1Department of Anatomy and Cell Biology, University of Göteborg, Sweden.

Biophysical Chemistry
|October 30, 1996
PubMed
Summary

Attractive lateral interactions influence how molecules like ferritin, viruses, and bacteria bind to surfaces over time and concentration. These forces affect molecular distribution, impacting biological surface reactions and adsorption processes.

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Area of Science:

  • Biophysics
  • Surface Chemistry
  • Computational Biology

Background:

  • Previous research indicated strong adsorbate interactions during ferritin adsorption.
  • Understanding these interactions is crucial for describing biological surface reactions.

Purpose of the Study:

  • To quantify attractive lateral adsorbate interactions.
  • To elucidate the effect of these interactions on the time- and concentration dependence of biological surface reactions.

Main Methods:

  • Experimental measurement of the pair correlation function g(r) to assess ligand distribution.
  • Analysis of adsorption kinetics and concentration effects on various biological molecules.

Main Results:

  • Attractive lateral interactions significantly affect the surface adsorption of ferritin, virus particles, and bacteria.

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  • These interactions influence the distribution and residence time of ligands on the surface.
  • The role of attractive lateral interaction was minimal in antibody-antigen binding to immobilized antigens.

    • Conclusions:

    • Attractive lateral interactions are a key factor in the adsorption dynamics of larger biological entities.
    • Quantifying these forces provides insights into the mechanisms governing biological surface reactions.
    • The impact of inter-ligand forces varies depending on the specific molecular system studied.