The present invention provides a method for producing a protein which has restored a higher-order structure of a native state thereof: by bringing the protein which has lost a higher-order structure thereof into contact at pH 6.5 to 9.0 to a 1 to 3% aqueous solution of a specific surfactant, such as lauroylglutamic acid to obtain a solubilized solution of the protein; and adding the obtained solubilized solution to a buffer with pH 6.5 to 9.0 containing arginine or an arginine derivative at a level of 0.1 to 1.2 M to lower the concentration of the specific surfactant, such as lauroylglutamic acid, in an obtained mixture solution down to 0.02 to 0.275%. According to the present invention, it is possible to easily restore a higher-order structure of a native state of a protein while smoothly detaching a surfactant from the protein.
本发明提供了一种生产恢复了原生态高阶结构的蛋白质的方法:将失去高阶结构的蛋白质在pH6.5至9.0的特定表面活性剂(如月桂酰谷
氨酸)的1%至3%的
水溶液接触,以获得该蛋白质的增溶溶液;并将所获得的增溶溶液加入pH值为6.5至9.0的缓冲液中,该缓冲液中含有0.1至1.2M的精
氨酸或精
氨酸衍
生物,以将所获得的混合物溶液中的特定表面活性剂(如月桂酰谷
氨酸)的浓度降至0.02%至0.275%。根据本发明,可以在使表面活性剂与蛋白质顺利分离的同时,轻松恢复蛋白质原生状态的高阶结构。