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    Université de Fribourg

    Colloidal characterization and thermodynamic stability of binary eye lens protein mixtures

    Dorsaz, N. ; Thurston, G. M. ; Stradner, Anna ; Schurtenberger, Peter ; Foffi, G.

    In: The Journal of Physical Chemistry B, 2009, vol. 113, no. 6, p. 1693–1709

    We present a study of binary mixtures of eye lens crystallin proteins. A coarse-grained model of aqueous α- and γ-crystallin mixtures based on molecular dynamics simulations and SANS experiments is proposed. Thermodynamic perturbation theory is implemented to obtain the stability boundaries, or spinodal surface, of the binary mixture in the full parameter space. The stability of these...

    Université de Fribourg

    New insight into cataract formation: enhanced stability through mutual attraction

    Stradner, Anna ; Foffi, G. ; Dorsaz, N. ; Thurston, G. ; Schurtenberger, Peter

    In: Physical Review Letters, 2007, vol. 99, no. 19, p. 198103

    Small-angle neutron scattering experiments and molecular dynamics simulations combined with an application of concepts from soft matter physics to complex protein mixtures provide new insight into the stability of eye lens protein mixtures. Exploring this colloid-protein analogy we demonstrate that weak attractions between unlike proteins help to maintain lens transparency in an extremely...