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Position: Home > Articles > Synthesis of Bovine Lactoferricin B Gene and Construction of Eukaryotic Expression Vector China Animal Husbandry & Veterinary Medicine 2009,36 (5) 97-100

牛乳铁蛋白肽基因LfcinB的合成及真核表达载体的构建

作  者:
孙东波;林云成;郭东华;王建发;张敏;林玉才;武瑞
单  位:
黑龙江八一农垦大学动物科技学院
关键词:
牛乳铁蛋白;牛乳铁蛋白肽;真核表达载体
摘  要:
根据APD抗菌肽数据库报道的牛乳铁蛋白肽LfcinB氨基酸序列,合成编码LfcinB基因的2条互补的寡核苷酸链,退火后在5′端和3′端分别形成含有BamHI和XhoI位点粘性末端的双链DNA。真核表达载体pcDNA3.1(+)经BamHI和XhoI限制性内切酶双酶切处理后与合成的LfcinB基因进行连接,连接产物转化E.coliDH5α感受态细胞,提取质粒DNA进行测序。测序结果显示,牛乳铁蛋白肽LfcinB基因成功克隆到pcDNA3.1(+)真核表达载体中,为进一步表达和抗菌活性研究奠定物质基础。
译  名:
Synthesis of Bovine Lactoferricin B Gene and Construction of Eukaryotic Expression Vector
作  者:
SUN Dong-bo,LIN Yun-cheng,GUO Dong-hua,WANG Jian-fa,ZHANG Min,LIN Yu-cai,WU Rui(College of Animal Science and Technology,Heilongjiang August First Land Reclamation University,Daqing 163319,China)
关键词:
bovine lactoferrin;bovine lactoferricin B;eukaryotic expression vector
摘  要:
Two complementary sense and antisense oligo-nucleotides,encoded bovine lactoferricin B gene(LfcinB),were synthesized based on amino acids sequence of bovine lactoferricin B published in the antimicrobial peptide database(APD).After the sense and antisense oligo-nucleotides annealed,a cohesive BamH I site at 5′terminus and a cohesive Xho I site at 3′terminus were formed.Synthesized LfcinB gene and eukaryotic expression vector pcDNA3.1(+) digested with BamH I and Xho I restriction endonuclease were ligated,and ligation products were transformed into E.coli DH5α.Plasmid extracted from transformed bacteria were sequenced by Sanger dideoxymethod.Sequencing result indicated the synthesized LfcinB gene was successfully cloned to multiple cloning site of vector pcDNA3.1(+).This may lay a foundation for expression and antimicrobial activities in future.

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