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. 1994 Mar;66(3 Pt 1):861–872. doi: 10.1016/s0006-3495(94)80862-8

Light scattering by bovine alpha-crystallin proteins in solution: hydrodynamic structure and interparticle interaction.

J Z Xia 1, T Aerts 1, K Donceel 1, J Clauwaert 1
PMCID: PMC1275784  PMID: 8011918

Abstract

We have studied diluted bovine eye lens alpha-crystallin solutions by using light scattering. The protein particles were modeled as hard spheres, showing electrostatic repulsion, due to surplus electric charges, and weak attractive interaction. The repulsive potential VR is defined by the radius of the particles, the Debye length kappa-1, and the number of charges at the Gouy layer; the attractive potential has been described by the London-van der Waals potential and is defined by the Hamaker constant A. We have used the diluted gas approximation and the one component macrofluid model to relate the experimental static factor Ki to the theoretical expression of the interaction potential V(x). This resulted in a Hamaker constant A of 0.06 +/- 0.01 KBT and an effective charge q ranging from 18 +/- 1 at low ionic strength (omega = 0.0022 M) to 50 +/- 5 at high ionic strength (omega = 0.1472 M).

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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