水稻密码子优化的cry1Ca基因在大肠杆菌中表达、纯化及抗体制备

Fujian Journal of Agricultural Sciences(2011)

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Abstract
将水稻偏好密码子优化并人工合成抗虫基因cry1Ca通过限制性内切酶酶切的方法构建原核表达载体pET-28bca,成功表达了带6个组氨酸标签的His-cry1Ca融合蛋白,其表达量约占菌体总蛋白的24%,表达的融合蛋白主要以包涵体的形式存在。对包涵体蛋白进行可溶性处理,亲和纯化出带6个组氨酸标签的融合蛋白,将其作为抗原免疫家兔获得了滴度(ELISA)为l∶50 000的抗血清,并具有较强的特异性。
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Key words
cry1Ca gene,polyclonal antibody,fusion protein,prokaryotic expression
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