ZHX2-GST融合蛋白原核表达载体的构建和鉴定  

CONSTRUCTION AND IDENDIFICATION OF EUKARYOTIC PROKARYOTIC EXPRESSION VECTOR ZHX2-GST FUSION PROTEIN

作　　者：杜杨君[1] 文剑明[2] 吕自力[1] 

机构地区：[1]广西医科大学第一附属医院病理科,南宁530021 [2]中山大学第一附属医院病理科,广州510080

出　　处：《广西医科大学学报》2012年第4期499-501,共3页Journal of Guangxi Medical University

基　　金：广西青年科学基金资助项目(No.0728057)

摘　　要：目的:构建编码ZHX2-GST融合基因的原核表达载体,在大肠杆菌中表达并对融合蛋白(ZHX2-GST)进行鉴定。方法:RT-PCR提取正常肝组织的RNA,然后扩增出ZHX2基因cDNA全长,克隆至含有GST标签的原核表达载体PGEX-4-1中,转化到Ecoli.BL21(DE3),IPTG诱导大肠杆菌表达ZHX2-GST蛋白,电泳分离鉴定。结果:测序结果显示克隆的ZHX2cDNA序列正确,SDS-PAGE鉴定表达产物分子量118ku,与ZHX2-GST分子量相符。结论:成功构建了编码ZHX2基因的ZHX2-GST原核表达载体,融合蛋白可用于临床及实验研究。Objective： To construct the prokaryotic expression vector of GST-ZHX2 fusion gene in Escherichia coli, and assay the GST-ZHX2 fusion protein. Methods：ZHX2 gene RNA was extracted from normal human liver tissue, reverse transcriptased and amplified into full length cDNA by RT-PCR, cloned into the GST tagged prokaryotie expression vector PGEX-4-1. The fusion gene GST-ZHX2 was expressed in E-coll. BL 21（DE3） induced by IPTG and the GST-ZHX fusion protein was assayed by SDS-PAGE. Results： The sequence of the cloned ZHX2cDNA was corrected and the molecular weight of expression production assayed by SDS-PAGE was 118 ku, coincided with GST-ZHX2. Conclusion： The prokaryotie expression vector of GST-ZHX2 fusion gene is constructed successfully, and the fusion protein can be used in clinical and experiment research.

关 键 词：ZHX2 谷胱甘肽转移酶(GST) 融合蛋白 原核表达 

分 类 号：R33[医药卫生—人体生理学]