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Effective protein-protein interaction from structure factor data of a lysozyme solution
M C Abramo1, C Caccamo, M Cavero
1Dipartimento di Fisica e di Scienze della Terra, Università degli Studi di Messina and CNISM (Consorzio Nazionale Interuniversitario di Struttura della Materia) Viale F. Stagno d'Alcontres 31, 98166 Messina, Italy.
Abstract:
We report the determination of an effective protein-protein central potential for a lysozyme solution, obtained from the direct inversion of the total structure factor of the system, as extracted from small angle neutron scattering. The inversion scheme rests on a hypernetted-chain relationship between the effective potential and the structural functions, and is preliminarily tested for the case of a Lennard-Jones interaction. The characteristics of our potential are discussed in comparison with current models of effective interactions in complex fluids. The phase behavior predictions are also investigated.
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