数字农科院2.0

陆地棉转录因子GhWRKY91基因的原核表达及鉴定

文献类型: 中文期刊

作者: 顾丽姣;魏恒玲;喻树迅

作者机构:

关键词: 棉花;GhWRKY91基因;SDS-PAGE;原核表达;表达分析

期刊名称:安徽农业大学学报

ISSN: 1672-352X

年卷期: 2022 年

页码:

收录情况: CSCD(2021-2022年度) ; 科技核心(2021版) ; 农林核心(2020版)

摘要: 为了筛选出高表达棉花GhWRKY91可溶性蛋白的原核表达载体。以中棉所10号叶片的c DNA为模板PCR扩增GhWRKY91基因,扩增产物分别构建到4个不同的原核表达载体pET-22b(+)、pET-32a(+)、p MAL-c5x和pGEX-4T-1。将重组载体pET-22b(+)-GhWRKY91、 pET-32a(+)-GhWRKY91、 pMAL-c5x-GhWRKY91和pGEX-4T-1-GhWRKY91转化到大肠杆菌菌株BL21(DE3)或Arctic-ExpressTM(DE3)RP中,IPTG诱导表达,SDS-PAGE电泳分析不同原核表达载体的蛋白表达情况。结果显示,pET-22b(+)-GhWRKY91和pET-32a(+)-GhWRKY91在BL21(DE3)中以及pMAL-c5x-GhWRKY91在Arctic-ExpressTM(DE3)RP中均未见明显蛋白表达,而pGEX-4T-1-GhWRKY91在Arctic-ExpressTM(DE3)RP中表达的蛋白基本存在于上清中,可获得可溶性蛋白。因此,将GhWRKY91基因构建到pGEX-4T-1原核表达载体上可成功获得可溶性蛋白。

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