Abstract
A method for the rapid preparative isolation of highly purified avidin using h.p.l.c. on a powerful cation-exchanger TSK SP-5PW column has been developed. The method is based on the following properties of avidin: solubility at a high (NH4)2SO4 concentration, stability and relatively low solubility in organic solvents, as well as the strongly cationic nature of the molecule. Riboflavin-binding glycoprotein may be isolated as by-product.
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