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目的构建粉尘螨变应原ProDerf1原核表达载体pET28a-YARA—IhC—ProDerf1,为评价其免疫治疗效果奠定基础。方法用分子克隆技术构建出表达载体pET28a—YARA—IhC—ProDerf1,在E.coli BL21(DE3)中表达融合蛋白YARA-IhC-ProDer f 1,并进行Ni~(2+)-NTA树脂柱亲和层析以纯化蛋白。结果经测序证实成功构建了表达载体pET28a-YARA-IhC-ProDer f 1,YARA-IhC-ProDer f 1融合蛋白在E.coli BL21(