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牛布鲁氏菌Wbkc基因原核表达及抗原性分析

Journal of Huazhong Agricultural University(2013)

Cited 23|Views36
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Abstract
克隆牛布鲁氏菌的甲酰基转移酶基因(Wbkc),在大肠杆菌中表达/纯化,并对甲酰基转移酶的抗原性进行分析。以牛布鲁氏菌的染色体DNA为模板,扩增Wbkc基因,双酶切后克隆至pET-28a上,在大肠杆菌BL21中诱导表达,His Trap FF层析柱纯化,Western blot鉴定甲酰基转移酶的抗原性。提取的重组质粒经PCR鉴定、双酶切鉴定和测序分析确定目的基因成功插入到了克隆载体中。SDS-PAGE分析证明,表达产物为相对分子质量29 000的融合蛋白。Western blot结果表明,表达的蛋白具有特异的免疫反应原性。
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Key words
prokaryotic expression,Brucella,antigenicity,Wbkc gene
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