波谱学杂志 ›› 2000, Vol. 17 ›› Issue (1): 23-28.

• 研究论文 • 上一篇    下一篇

用NMR确定MCYST-LR环肽部分的结构

张涛1, 毛希安1, 何家菀2   

  1. 1 中国科学院武汉物理与数学研究所波谱与原子物理国家重点实验室, 武汉 430071;
    2 中国科学院水生生物研究所, 武汉 430072
  • 收稿日期:1999-11-04 修回日期:1999-11-30 出版日期:2000-02-05 发布日期:2018-01-10
  • 作者简介:张涛,男,1968年出生,博士生
  • 基金资助:
    国家自然科学基金资助项目(批准号:39770155)

STRUCTURE OF THE CYCLO-HEPTAPEPTIDE IN MICROCYSTIN-LR DETERMINED BY NMR

ZHANG Tao1, MAO Xi'an1, HE Jiawan2   

  1. 1 State Key Laboratory of Magnetic Resonance & Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, The Chinese Academy of Sciences, Wuhan 430071;
    2 Institute of Hydrobiology, The Chinese Academy of Sciences, Wuhan 430072
  • Received:1999-11-04 Revised:1999-11-30 Online:2000-02-05 Published:2018-01-10

摘要: 利用一维和二维核磁共振技术对从鱼塘水华样品中提取的一种毒素进行了研究,结合其它分析手段,确定了该毒素即为普通环七肽肝毒素Microcystin-LR (MCYST-LR),测定了该环七肽的环上氨基酸残基的连接方式和顺序.

关键词: 微囊藻毒素MCYST-LR, NMR, 化学位移, 氨基酸残基

Abstract: A toxin isolated from waterbloom of the colonial cyanobacterium Microcystis aeruginosa collected in a fish pond was studied by one-dimensional and two-dimensional nuclear magnetic resonance techniques. Combined with other analytical techniques, it is shown that this toxin is just microcystin-LR, the most common cyclo-heptapeptide. The connectivity of amino acids in the cyclic part of this toxin is determined.

Key words: Microcystin-LR, NMR, Chemical shift, Amino acid connectivity