Aqueous solutions of major serum proteins (albumin and g-globulin) with small concentrations of potassium and europium ions were investigated with the use of photon-correlation spectroscopy and atomicforce microscopy. The coefficients of translation diffusion, as well as the effective radiuses of the scattering particles in the solutions as a function of pH and salt concentration, were obtained. It was found that protein dipole nanoclusters form in these solutions, which was confirmed by AFM methods as well.
87.83.+a Biomedical applications of nanotechnology
$^1$Molecular Physics Subdepartment, Physics Department, Moscow State University, Moscow, 119991, Russia
$^2$Nanocomposite Materials Laboratory, Kotel’nikov Institute of Radio Engineering and Electronics, Russian Academy of Sciences, Moscow, 125009, Russia
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