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Position: Home > Articles > Cloning of Receptor-Like Protein Kinase Gene SiRLK35 from Foxtail Millet and Its Prokaryotic Expression Shandong Agricultural Sciences 2016,48 (9) 1-5

谷子类受体蛋白激酶基因SiRLK35的克隆及原核表达

作  者:
王一帆;李臻;潘教文;王庆国;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理生态重点实验室
关键词:
谷子;类受体蛋白激酶;SiRLK35;原核表达
摘  要:
本研究以"豫谷1号"c DNA为模板,通过PCR技术获得类受体蛋白激酶基因SiRLK35(NCBI登录号:XM_004956247.2)的全长序列。生物信息学分析显示,该基因编码蛋白由392个氨基酸残基构成,包含一个S_TKc保守结构域以及一个TFS2N结构域,含3个跨膜结构域,N端有信号肽。SiRLK35基因经Bam HⅠ、SalⅠ双酶切后,利用p ET-28a构建原核表达载体,转化大肠杆菌菌株BL21(DE3),经0.5 mmol/L IPTG于25℃诱导12 h后,在44.6 k D处得到一明显诱导表达蛋白条带,表达产物与预期相符,证明SiRLK35基因可在大肠杆菌中诱导表达。该结果为进一步研究SiRLK35基因功能奠定基础。
译  名:
Cloning of Receptor-Like Protein Kinase Gene SiRLK35 from Foxtail Millet and Its Prokaryotic Expression
作  者:
Wang Yifan;Li Zhen;Pan Jiaowen;Wang Qingguo;Liu Wei;Biotechnology Research Center,Shandong Academy of Agricultural Sciences,Shandong Provincial Key Laboratory of Crop Genetic Improvement,Ecology and Physiology;College of Life Sciences,Qingdao Agricultural University;
关键词:
Foxtail millet;;Receptor-like protein kinase;;SiRLK35;;Prokaryotic expression
摘  要:
In this research,the full-length sequence of receptor-like protein kinase gene SiRLK35( NCBI accession number: XM_004956247. 2) was amplified by PCR technique with the c DNA of Yugu 1 as template. Bioinformatics analysis showed that the protein product of SiRLK35 was composed of 392 amino acids. It contained one S_TKc conserved domain,one TFS2 N domain,three transmembrane domains and a N terminal signal peptide. The sequence of SiRLK35 was digested with Bam HⅠ and SalⅠ,and then the recombined prokaryotic expression vector p ET-28a-SiRLK35 was constructed successfully through connecting the fragment with p ET-28 a. The recombinant was further transformed into E. coli strain BL21( DE3). Induced with 0. 5 mmol / L IPTG,a 44. 6 k D fusion protein was obtained,which proved that the SiRLK35 could be induced to express in E. coli. This research layed a good foundation for further study of the function of SiRLK35 gene.

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