文献类型：期刊文献

中文题名：红笛鲷NCCRP-1基因原核表达条件的优化及纯化

英文题名：Purification and Optimization of Prokaryotic Expression of Crimson Snapper (Lutjanus sanguineus) NCCRP-1 Gene

作者：魏世娜[1];王蓓[1];鲁义善[1];吴灶和[1];简纪常[1]

机构：[1]广东海洋大学水产学院广东省水产经济动物病原生物学及流行病学重点实验室暨广东省高等学校水产经济动物病害控制重点实验室,广东湛江524025

年份：2010

卷号：30

期号：6

起止页码：25

中文期刊名：广东海洋大学学报

外文期刊名：Journal of Guangdong Ocean University

收录：CSTPCD

基金：国家自然科学基金"红笛鲷仔鱼抗菌免疫基因的克隆及表达时序研究"(40906073)

语种：中文

中文关键词：红笛鲷;NCCRP-1基因;原核表达;条件优化;纯化

外文关键词：Lutjanus sanguineus; NCCRP-1 gene; conditions optimization; purification

中文摘要：通过克隆编码红笛鲷(Lutjanus sanguineus)非特异性毒性细胞受体蛋白-1(nonspecific cytotoxic cell receptor protein-1,NCCRP-1)成熟肽基因序列,然后与载体连接构建pET21a-NCCRP融合蛋白表达载体,将其转入大肠杆菌BL21进行诱导表达并优化条件。SDS-PAGE分析表明,在异丙基-β-D-硫代半乳糖苷(IPTG)浓度0.8 mmol/L、37℃条件下培养3 h后表达量最大,分子大小与预期值相符,融合蛋白主要以包涵体形式高效表达,通过HisTrap HP柱子使其得到进一步纯化;Western blot分析表明,该融合蛋白可与鼠抗His-tag单克隆抗体发生特异性结合,说明获得该表达产物。

外文摘要：The cloned mature peptide of Lutjanus sanguineus NCCRP-1 was connected with the expression vector pET-21a to construct fusion protein pET21a-NCCRP.This recombinant was transformed into Escherichia coli BL21 and mainly expressed in the form of inclusion body.The optimal condition for the expression of this protein was that the cells were induced at 37 ℃,in 0.8 mmol/L of IPTG for 3 hours.The molecular weight of the expressed product was identical to that of expected protein by SDS-PAGE analysis,then purified by HisTrap HP column.The result of Western blot show that the expressed product could be combined with mouse anti-His-tag Mab.The fusion protein which lays the basic could be obtained for the future research on function and applied in fish innate immunity.