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人VIGILIN基因分段克隆及表达

Segment Cloning and Expression of Human VIGILIN Gene
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摘要 目的探讨人高密度脂蛋白结合蛋白(HDLBP)-VIGILIN蛋白与其他蛋白质相互作用的机制。方法根据VIGILIN基因全长编码区的结构域,将VIGILIN基因全长编码区分为N端、KH1-7、KH8-12、KH13-14、C端5段,以pDsred2-N1/VIGILIN为模板分别扩增5个片段及全长cDNA后克隆至pGEX 5X3原核表达载体,测序,然后将鉴定后的重组质粒转化到表达宿主菌E.coli BL21中进行诱导表达GST-VIGILIN融合蛋白,并用SDSPAGE电泳及Western blot检测蛋白表达结果。结果成功扩增了人VIGILIN基因编码区分段片段,并且构建到原核表达载体中,经酶切、测序鉴定证实序列完全正确,重组载体构建成功,并且在pGEX原核表达系统中诱导表达GST-VIGILIN融合蛋白,经SDS-PAGE电泳及Western blot检测初步证实表达成功。结论本实验首次根据VIGILIN蛋白不同的结构域成功构建了GST-VIGILIN分段克隆原核表达载体,并且对融合蛋白表达条件进行了优化,成功表达了GST融合蛋白。 Objective To investigate the mechanisms of interaction between high-density lipoprotein binding protein （HDLBP）-VIGILIN with other proteins, we cloned VIGILIN cDNA N, KH1-7, KH8-12, KH13-14, and C fragments separately into expression vector, and identify the expressed proteins. Methods The recombinant plasmid pDsred2-N1/VIGILIN was used as template to amplify VIGILIN full length, VIGILIN N terminal, KH1- 7, KH8-12, KH13-14, C terminal and recombinated them with pGEX 5X 3. After transformed into E. coli BL21 cells, the recombinants were confirmed by enzyme digestion and sequence analysis. After optimizing the IPTG inducing condition, we induced GST-VIGILIN fusion proteins on the appropriate conditions. Results The recombinant plasmids of pGEX 5X 3/VIGILIN FL, pGEX 5X 3/VIGILIN N terminal, pGEX 5X 3/VIGILIN KHI-7, pGEX 5X 3/VIGILIN KH8-12, pGEX 5X 3/VIGILIN KH13-14, pGEX 5X 3/VIGILIN C terminal were constructed successfully, and induced the GST-VIGILIN fusion proteins. Conclusion pGEX 5X 3/VIGILIN FL, pGEX 5X 3/VIGILIN N terminal, pGEX 5X 3/VIGILIN KH1-7, pGEX 5X 3/VIGILIN KH8-12, pGEX 5X 3/ VIGILIN KH13-14, pGEX 5X 3/VIGILIN C terminal recombinant plasmids were constructed successfully, and their corresponding fusion proteins were successfully expressed.
作者 俞小琴 魏玲 刘秋英 黄元 赵荣策 覃扬
机构地区 四川大学华西基础医学与法医学院生物化学与分子生物学教研室 四川大学华西医院肝血管外科
出处 《四川大学学报（医学版）》 CAS CSCD 北大核心 2015年第5期661-666,共6页 Journal of Sichuan University(Medical Sciences)
基金 国家自然科学基金(No.30870957)资助
关键词 VIGILIN基因 结构域 分段克隆 原核表达系统 VIGILIN Domain Segmented cloning Prokaryotic expression
分类号 Q78 [生物学—分子生物学]
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参考文献17

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二级参考文献42

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四川大学学报（医学版）
2015年 第5期

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