Physics – Condensed Matter – Soft Condensed Matter
Scientific paper
2006-07-11
Europhys. Lett. 77, 48004 (2007)
Physics
Condensed Matter
Soft Condensed Matter
4 pages, 4 figures
Scientific paper
10.1209/0295-5075/77/48004
We present a combined experimental and numerical study of the equilibrium cluster formation in globular protein solutions under no-added salt conditions. We show that a cluster phase emerges as a result of a competition between a long-range screened Coulomb repulsion and a short-range attraction. A simple effective potential, in which only depth and width of the attractive part of the potential are optimized, accounts in a remarkable way for the wavevector dependence of the X-ray scattering structure factor.
Cardinaux Frédéric
Schurtenberger Peter
Sciortino Francesco
Stradner Anna
Zaccarelli Emanuela
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