转基因产品中常见外源基因的克隆与转化

设计带不同酶切位点的引物,分别用PCR扩增植物内源rbcL基因和2种转基因产品中常见的外源基因-CP4-EPSPS基因和BAR基因,并分别与pGEM-TEasyVector连接,克隆到大肠杆菌DH5α中。提取克隆菌落的质粒,并进行酶切鉴定和序列测定。对3个基因的克隆质粒进行相应的双酶切,回收酶切产物,先后转化到受体载体pCAMBW中。最后获得的重组质粒的酶切和PCR鉴定结果表明3个基因已被成功转化到受体载体中。

Cloning and Transforming of the Universal Exogenous Genes in Genitically Modified Products

The primers with different enzyme sites were designed, and the plant endogenous rbcL gene and two kinds of universal exogenous CP4-EPSPS gene and BAR gene in genetically modified products were expanded by PCR respectively. The PCR products were ligated with pGEM-T Easy Vector, then cloned into E.coli strain DH5α. The clone plasmids of the 3 genes were extracted, then analysed with restriction enzyme and sequenced respectively. The enzymed products of the 3 clone plasmids cut by two corresponding restriction enzyme were recovered, and transformed into the received carrier pCAMBW one after the other. The restriction enzyme analysising and PCR detection results of the recombinant plasmid obtained finally showed that the 3 genes were transformed successfully into the received carrier.