食品科学 ›› 2008, Vol. 29 ›› Issue (7): 311-315.

• 生物工程 • 上一篇    下一篇

人Mn-SOD基因及其优化序列在毕赤酵母中的表达

王岁楼, 张国超   

  1. 中国药科大学食品科学与安全系; 郑州轻工业学院食品与生物工程系 江苏南京210009郑州轻工业学院食品与生物工程系; 河南郑州450002
  • 出版日期:2008-07-15 发布日期:2011-07-28

Expression of Human Mn-superoxide Dismutase and Its Gene Codon Optimized in Pichia pastoris

 WANG  Sui-Lou, ZHANG  Guo-Chao   

  1. 1.Department of Food Science and Safety, China Pharmaceutical University, Nanjing 210009, China; 2.Department of Food and Biology Engineering, Zhengzhou Institute of Light Industry, Zhengzhou 450002, China
  • Online:2008-07-15 Published:2011-07-28

摘要: 提取人肝总RNA,通过RT-PCR扩增出了Mn-SOD相应的基因片段,与载体相连后导入毕赤酵母中。根据酵母偏爱密码子对基因序列进行优化处理后的基因序列也导入毕赤酵母中。对这两种工程菌产SOD情况进行对比实验,发现经过基因序列优化的工程菌在产酶能力上具有更大的优势,这表明在基因序列表达中序列优化具有重要作用。

关键词: 超氧化物歧化酶, 毕赤酵母, 优化, 表达

Abstract: The total RNA of human liver was extracted and human Mn-SOD gene was amplified by RT-PCR. Manganese SOD gene was expressed in P. pastoris after construction of expression vector. The optimized gene codon, which is based on yeast major preference codons was also expressed in P. pastoris. Meanwhile, enzyme-producing ablilities of the two genetic engineering strains were compared. Results showed that the optimized strain have advantage on ability of producing enzyme over the control. It can be concluded that optimization of gene sequence plays an important role in its expression.

Key words: superoxide dismutase, Pichia pastoris, optimization, expression