高等学校化学学报 ›› 2002, Vol. 23 ›› Issue (6): 1035.

• 研究快报 • 上一篇    下一篇

用于蛋白质分析的毛细管等电聚焦-电喷雾质谱接口的改进

许崇峰1, 宋浩威1, 杨原1, 王谦1, 王洪海2, 许云敏2   

  1. 1. 复旦大学化学系, 上海 200433;
    2. 遗传研究所, 上海 200433
  • 收稿日期:2001-11-06 出版日期:2002-06-24 发布日期:2002-06-24
  • 通讯作者: 杨原(1949年出生),男,博士,博士生导师,主要从事生物质谱和蛋白质组学研究.
  • 基金资助:

    国家自然科学基金(批准号:29927002);国家重点基础研究发展规划项目(批准号:001CB5102)资助

Modification on the Interface of Capillary Isoelectric Focusing and Mass Spectrometry for Proteomic Research

XU Chong-Feng1, SONG Hao-Wei1, YANG Peng-Yuan1, WANG Qian1, WANG Hong-Hai2, XU Yun-Min2   

  1. 1. Department of Chemistry, Shanghai 200433, China;
    2. Institute of Genetics, Fudan University, Shanghai 200433, China
  • Received:2001-11-06 Online:2002-06-24 Published:2002-06-24

关键词: 毛细管等电聚焦-质谱接口, 两维分离鉴定, 大肠杆菌, 蛋白质组

Abstract: An important interface modification for capillary isoelectric focusing mass spectrometry(CIEF-MS) is reported. Acapillary needle with a sheath flow tube pre-mounted in one device serves as both the CIEF cathodic-end and the ESI interface. The needle was inserted into the cathode reservoir at the focusing stage, and then removed to the front of sampler orifice of MSat the detection stage. Therefore, the shut-off of the high voltage is not necessary and a better focusing protein zone is maintained during the ESIstage. The optimization of the experimental condition has been investigated and the two dimensional image of the E. coli proteins has been obtained, which is comparable with that from a 2D-gel.

Key words: Interface of CIEF-MS, 2D Separation and identification, E. coli, Proteome

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