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禽流感病毒HA1基因的克隆及原核表达
Cloning and Prokaryotic Expression of HA1 Gene of AIV
【摘要】 用RT-PCR方法扩增出禽流感病毒A/Muscovyduck/Fujian/2/2000(MF00)株部分HA基因,大小约900bp,将其克隆到pMD18-T载体上,并进行了序列的分析。通过BamHⅠ和XhoⅠ酶切位点将HA基因亚克隆到原核表达载体pGEX4T-3上,成功构建了阳性重组表达质粒,并将阳性重组质粒转化BL21(DE3)菌株。经IPTG诱导表达,结果禽流感HA基因在pGEX4T-3系统中得到高效表达,经Westernblotting检测证实表达产物有生物学活性。
【Abstract】 In this study, a 0.9 kb DNA fragment of HA1 gene of AIV A/Muscovyduck/Fujian/2/2000(MF00)strain was obtained by RT-PCR. The HA gene was inserted into the pMD18-T vector and then sequenced .Then the HA1 gene was cloned into the expression vector of pGEX4T-3 by restriction enzyme (BamHⅠand XhoⅠ).The recombinant plasmid was transformed into E.coli(BL21/DE3)and induced with IPTG.The results showed that the HA1 segment was highly expressed in E coil(BL21/DE3) .Western blotting analysis showed that the recombinant protein shared good antigenity.
【Key words】 Avian influenza virus; HA1 gene; cloning; prokaryotic expression;
- 【文献出处】 动物医学进展 ,Progress in Veterinary Medicine , 编辑部邮箱 ,2006年01期
- 【分类号】S852.65
- 【被引频次】8
- 【下载频次】280