Abstract

Bovine serum albumin is known to be somewhat asymmetrical and to possess an intrinsic (structural) anisotropy. According to the light scattering theory of Rayleigh and Gans for optically anisotropic spheroids, both the refractive index increment and the scattering ratio at 90° scattering angle of small spheroidal particles depend on the axial ratio, the intrinsic amisotropy, and the relative refractive index of the spheroid to the solvent. By using these theoretical expressions the intrinsic anisotropy parameters of bovine serum albumin in a native state were calculated with the experimental values. The principal particle refractive indices along the major and minor axes of bovine serum albumin obtained were 1.744 and 1.563, respectively, and the mean refractive index was 1.602.

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