生物技术进展 ›› 2011, Vol. 1 ›› Issue (1): 56-60.DOI: 10.3969/j.issn.2095-2341.2011.01.09

• 研究论文 • 上一篇    下一篇

HIV-1 CRF07 B/C亚型gp41的表达、纯化和初步结构分析

王建新1,王敏1,张同存1,刘新奇2*   

  1. 1.天津科技大学生物工程学院, 天津 300457;
    2.南开大学生命科学学院, 天津 300071
  • 收稿日期:2010-12-20 出版日期:2011-07-25 发布日期:2011-01-25
  • 通讯作者: 刘新奇,教授,主要从事免疫相关的蛋白质晶体学研究。Tel:022-23505130;E-mail:liu2008@nankai.edu.cn
  • 作者简介:王建新,硕士研究生,研究方向为蛋白质生物工程。
  • 基金资助:

    “艾滋病和病毒性肝炎等重大传染病防治”专项(2008ZX10001-010)和国家973计划项目(2010CB911800)资助。

Prokaryotic Expression, Purification and Crystallization of HIV-1 CRF07 B/C Subtype gp41 Helix-bundle

WANG Jian-xin, WANG Min, ZHANG Tong-cun, LIU Xin-qi   

  1. 1.College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, China;
    2.College of Life Science, Nankai University, Tianjin 300071, China
  • Received:2010-12-20 Online:2011-07-25 Published:2011-01-25

摘要: HIV-1跨膜蛋白gp41是HIV-1包膜与靶细胞膜融合过程中的关键蛋白,而且序列保守,是理想的HIV-1作用靶点。为获得HIV-1中国流行株CRF07 B/C gp41蛋白的晶体结构来指导疫苗设计及药物开发,采用CRF07 B/C gp160基因序列为模板,经PCR、酶切、连接,将gp41 helix-bundle区域克隆到pET30-his表达载体中,经表达、纯化和结晶筛选,获得了gp41 helix-bundle的晶体并解析了结构,为针对中国艾滋病病毒流行株疫苗的设计及药物开发提供了结构参考。

关键词: HIV-1, gp41, 表达, 纯化, 晶体结构

Abstract: HIV-1 transmembrane protein gp41, which plays an important role in the fusion of viral and cellular membranes, is the ideal target for intervention of HIV-1 infection. In order to obtain gp41 crystal structure from prevalent strain in China, gp41 helix-bundle region was cloned into pET30-his vector by overlap PCR, enzyme digestion and ligation using CRF07 B/C gp160 gene as template. The plasmid was transferred into E.coli Rosetta(DE3), and expression, purification and crystal screening of gp41 were conducted. Crystals of gp41 helix-bundle were obtained and its structure was solved by molecular replacement method. The overall structure was similar to B subtype, but the unique characteristics in local conformation would facilitate the vaccine design and drug development against CRF07 B/C prevalent in China.

Key words: HIV-1, gp41, expression, purification, crystal structure