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Position: Home > Articles > Prokaryotic Expression of Receptor- Like Kinase OsESG1 from Rice Shandong Agricultural Sciences 2015 (1) 1-6

水稻类受体蛋白激酶OsESG1的原核表达

作  者:
赵丽;张国嘉;郑世刚;李臻;王庆国;潘教文;刘炜
单  位:
山东省农业科学院生物技术研究中心/山东省作物遗传改良与生态生理重点实验室;山东师范大学生命科学学院/山东省逆境植物重点实验室
关键词:
类受体蛋白激酶;OsESG1;原核表达
摘  要:
水稻类受体蛋白激酶Os ESG1在种胚中特异表达,属丝氨酸/苏氨酸蛋白激酶。Os ESG1基因全长c DNA经XhoⅠ、Bam HⅠ双酶切,与同样经双酶切的原核表达载体p ET-28a(+)经T4 DNA连接酶连接,并转化大肠杆菌感受态细胞BL21。原核表达结果显示,Os ESG1可受1 mmol/L IPTG诱导表达,且蛋白表达量随诱导时间的延长而逐渐增加,诱导7 h后,蛋白表达至较高水平。对不同浓度IPTG诱导下的蛋白表达情况进行研究,结果显示,0.1 mmol/L IPTG对Os ESG1的诱导表达效果最好。
译  名:
Prokaryotic Expression of Receptor- Like Kinase OsESG1 from Rice
作  者:
Zhao Li;Zhang Guojia;Zheng Shigang;Li Zhen;Wang Qingguo;Pan Jiaowen;Liu Wei;College of Life Science,Shandong Normal University/Shandong Provincial Key Laboratory of Plant Stress Research;Biotechnology Research Center,Shandong Academy of Agricultural Sciences / Shandong Provincial Key Laboratory of Crop Genetic Improvement,Ecology and Physiology;
关键词:
Receptor-like kinase;;OsESG1;;Prokaryotic expression
摘  要:
Rice receptor- like kinase Os ESG1 belongs to serine / threonine protein kinase,which is specifically expressed in rice embryo. In this research,the full length c DNA of Os ESG1 was digested by Bam HⅠ and XhoⅠ,and then linked with the prokaryotic expression vector p ET- 28a( +) digested by the same double enzymes with T4 DNA ligase. The constructed prokaryotic expression vector of Os ESG1- p ET- 28a( +) was then transformed into host bacteria BL21 for protein expression analysis. The SDS- PAGE showed that Os ESG1 could be induced to express by 1 mmol / L IPTG. The expression quantity increased with the elongation of induction time,and reached the maximum level after inducing for 7 h. The induction concentration of IPTG was also studied. The results indicated that 0. 1 mmol / L IPTG had the best induction effect.

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