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结核分枝杆菌宁夏分离株pst S1基因的扩增及生物信息学分析

Keywords: 结核分枝杆菌,宁夏分离株,pstS1基因,扩增,生物信息学

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Abstract:

目的扩增编码结核分枝杆菌(宁夏分离株)38kDa蛋白的pstS1基因,运用生物信息学方法和软件预测其编码蛋白的生物学特性,为早期结核病的诊断以及新的抗结核药物的研制奠定基础。方法采用聚合酶链式反应(PCR),从结核分枝杆菌(宁夏分离株)基因组中扩增出pstS1基因,对其核苷酸序列进行测定;利用序列对比分析和蛋白质结构预测软件进行生物信息学分析。结果获得的pstS1基因的全长1112bp与预期大小基本一致,基因序列与GenBank公布的MTB标准株(ATCC27294)基因序列的核苷酸同源性为92.7%,初步预测出该蛋白的分子特征、抗原性和二级结构。结论成功扩增MTB(宁夏分离株)pstS1基因,通过生物信息学分析获得了该蛋白的信息特征,为进一步研究其生物学功能和免疫学活性奠定了基础。

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