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转录抑制因子ZHX2功能片段原核表达载体的构建及表达 被引量:1

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摘要 目的从人正常组织中克隆人转录抑制因子ZHX2功能片段,构建其原核表达载体,并在大肠杆菌中进行表达,纯化获得蛋白,用于下一步探讨ZHX2基因的功能。方法根据GenBank中ZHX2功能片段已知序列设计引物,从正常人组织中通过RT-PCR方法扩增ZHX2基因功能片段,克隆到原核表达载体pET28a(+)中,转化Ecoli.BL21(DE3)I,PTG诱导表达,采用镍柱亲和层析法纯化目的蛋白。结果测序结果显示克隆的ZHX2基因序列正确,SDS-PAGE鉴定表达产物分子量正确,Western-blot鉴定结果显示表达产物为人ZHX2功能片段特异性蛋白。结论本研究成功构建了含有ZHX2功能片段的原核融合表达载体,并实现了ZHX2功能片段的表达,获得了纯化的蛋白,为进一步研究ZHX2基因的功能奠定了基础。
出处 《中国老年学杂志》 CAS CSCD 北大核心 2011年第16期3115-3117,共3页 Chinese Journal of Gerontology
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