菠菜乙醇酸氧化酶编码区cDNA在酵母表达载体中的克隆
Cloning of Spinach Glycolate Oxidase cDNA and Its Construction into Yeast Expression Vector
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摘要: 目的:克隆菠菜乙醇酸氧化酶cDNA并构建其酵母表达载体。方法:从新鲜菠菜叶子中提取总RNA,用RT-PCR法扩增菠菜乙醇酸氧化酶编码区cDNA并插入pMD-T载体中进行序列测定;将此cDNA构建入P.Pastoris酵母表达体系中的pPIC3.5k上的SnaBI/NotI位点,进行PCR筛选和限制性酶切鉴定。结果:测序表明获得的基因为乙醇酸氧化酶cDNA序列,与国外文献报道的序列相比有约98%的同源性;重组质粒的SnaBI/NotI双酶切证明构建正确。结论:菠菜乙醇酸氧化酶cDNA克隆及重组质粒pPIC3.5K-GO的获得,为酵母表达菠菜乙醇酸氧化酶提供了前题条件。Abstract: METHOD:Using spinach to extract total RNA, the spinach GO cDNA was amplified by RT PCR. This cDNA was inserted into cloning vector pMD T and sequenced. The cDNA was then cloned into pPIC3 5K(P.Pastoris expression vector)by SnaBI/NotI double digestion.