Abstract

Abstract: α.-Fetoprotein samples isolated from human cord serum by metal affinity chromatography and immunoaffi.nity method were compared by circular dichroism, fluorescence spectroscopy and scanning microcalorimetry. The isolation procedures were quite distinguished by their influence on native protein structure (and, consequently, by the effectiveness of natural ligand release from a protein molecule). As a result, structural properties and conformational stability of a.-fetoprotein in the samples were found to be rather different.

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