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结核分枝杆菌ESAT-6诊断抗原基因的克隆及同源性分析

, PP. 339-342

Keywords: 结核分枝杆菌,ESAT-6基因,克隆,序列分析

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Abstract:

目的获得结核分枝杆菌ESAT-6抗原基因,进行DNA测序、同源性分析,为筛选结核病候选诊断抗原基因奠定基础。方法以结核菌标准菌株H37Rv为模板,通过PCR技术扩增出结核分枝杆菌ESAT-6抗原基因,将其重组到pGEM-T载体后进行序列测定和生物信息学分析。结果成功扩增出结核分枝杆菌ESAT-6抗原基因,测序表明该片段开放阅读框由288bp组成,与已发表基因核苷酸序列相比,同源性为99%,推导编码氨基酸序列同源性为90%。结论成功克隆结核分枝杆菌ESAT-6基因,测序结果表明该片段阅读框完整。

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