A method for the preparation of a polypeptide of interest in authentic form by enzymatic cleavage of fusion proteins using Granzyme B protease (EC 3.4.21.79). There is also provided fusion proteins comprising a polypeptide of interest an a fusion partner, wherein the junction region between the polypeptide of interest and the fusion partner comprises a Grazyme B protease cleavage site adjacent to the polypeptide of interest, and a human Granzyme B protease variant wherein the Cystein residue no. 228 (chymotrupsinogen numbering) is mutated to Phenylalanine.
一种通过使用 Granzyme B
蛋白酶(
EC 3.4.21.79)酶解融合蛋白制备真品
多肽的方法。还提供了一种融合蛋白,该融合蛋白包括一个感兴趣的
多肽和一个融合伙伴,其中感兴趣的
多肽和融合伙伴之间的连接区包括一个邻近感兴趣的
多肽的格拉酶 B
蛋白酶裂解位点,以及一个人格拉酶 B
蛋白酶变体,其中胱
氨酸残基 228 号(糜
蛋白酶原编号)突变为苯丙
氨酸。