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本研究利用大肠杆菌双杂交系统构建了一个高质量的大豆根系cDNA文库,同时利用大肠杆菌双杂交表达载体pBT构建了融合表达质粒pBT-GmWNK1,经酶切和测序鉴定、诱饵融合蛋白的表达检测及诱饵融合蛋白的自激活鉴定后作为诱饵,从大豆根部cDNA文库中筛选与GmWNK1发生互作的蛋白质,共获得18个阳性克隆。经测序和同源性比对发现,有10个阳性克隆编码已知蛋白,8个为假阳性。研究结果为揭示WNK基因家族的生物学功能和调控机制提供了重要的参考数据和研究材料。
In this study, a high-quality soybean root cDNA library was constructed by using the two-hybrid system of E. coli. At the same time, the fusion expression plasmid pBT-GmWNK1 was constructed by using the two-hybrid expression vector pBT in E. coli. The expression of bait fusion protein And bait fusion protein after self-activation identification as a bait, from soybean root cDNA library screening GmWNK1 interact protein, a total of 18 positive clones were obtained. Sequencing and homology comparison showed that 10 positive clones encoded known proteins and 8 were false positives. The results provide important reference data and research materials for revealing the biological function and regulation mechanism of WNK gene family.