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植物研究 ›› 2007, Vol. 27 ›› Issue (5): 588-592.doi: 10.7525/j.issn.1673-5102.2007.05.018

• 论文 • 上一篇    下一篇

长春花金属硫蛋白基因原核表达载体的构建及表达研究

祖元刚;房思良;聂明珠   

  1. 东北林业大学森林植物生态学教育部重点实验室,哈尔滨 150040
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2007-09-20 发布日期:2007-09-20
  • 通讯作者: 祖元刚
  • 基金资助:
     

The Vector Construction and Prokaryotic Expression of Catharanthus roseus metallothionein(CrMT) in E.coli

ZU Yuan-Gang;FANG Si-Liang;NIE Ming-Zhu   

  1. Key Laboratory of Forest Plant Ecology,Ministry of Education,Northeast Forestry University,Harbin 150040
  • Received:1900-01-01 Revised:1900-01-01 Online:2007-09-20 Published:2007-09-20
  • Contact: ZU Yuan-Gang
  • Supported by:
     

摘要: 将从长春花中克隆的金属硫蛋白基因(GenBank登录号:DQ016341)构建到高效原核表达载体pGEX-6P-1,并命名为pGEX-6P-1-CrMT,并对GST-CrMT融合蛋白的表达进行诱导和条件优化。对不同的诱导温度、IPTG诱导浓度和诱导时间等条件的优化结果表明,随诱导时间增长GST-CrMT融合蛋白表达量提高,22℃,24 h和37℃,240 min均能诱导GST-CrMT融合蛋白的最大量表达,在0.8 mmol·L-1 IPTG浓度下可以有效诱导GST-CrMT融合蛋白的表达。

关键词: 长春花, 金属硫蛋白, 载体构建, 原核表达

Abstract: A full-length sequence coding for metallothionein gene from Catharanthus roseus was cloned into the high expression vector pGEX-6P-1, and named pGEX-6P-1-CrMT. The GST-CrMT fusion protein was expressed and the expression conditions were optimized. Through the research on optimization of expression temperature, induction time and the concentration of IPTG and so on, results showed, the expression of GST-CrMT increased accompany with the induction time. The expression level of GST-CrMT fusion protein reached the highest for 24 hours cultured at 22℃ and for 240 min cultured at 37℃, 0.8 mmol·L-1 IPTG can effectively induced the expression of GST-CrMT in prokaryotic expression system.

Key words: Catharanthus roseus, metallothionein(MT), vector construction, prokaryotic expression

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