高等学校化学学报 ›› 1998, Vol. 19 ›› Issue (2): 280.

• 论文 • 上一篇    下一篇

乙酰胆碱酯酶催化硫代乙酰胆碱水解反应的量子化学研究

王沁泌, 蒋华良, 陈凯先, 顾健德, 唐赟, 陈建忠, 嵇汝运   

  1. 中国科学院生物物理所、新药研究国家重点实验室, 上海, 200031
  • 收稿日期:1996-10-06 出版日期:1998-02-24 发布日期:1998-02-24
  • 通讯作者: 蒋华良
  • 作者简介:王沁泌,女,30岁,博士研究生,现在中国科学院生物物理所.
  • 基金资助:

    国家自然科学基金资助课题(29403027).

Quantum Chemical Studies on Acetylthiocholine Hydrolysis Catalyzed by Acetylcholinesterase

WANG Qin-Mi, JIANG Hua-Liang, CHEN Kai-Xian, GU Jian-De, TANG Yun, CHEN Jian-Zhong, JI Ru-Yun   

  1. Shanghai Institute of Meteria Medica, Chinese Academy of Sciences, National Key Laboratory of New Medicines, Shanghai, 200031
  • Received:1996-10-06 Online:1998-02-24 Published:1998-02-24

摘要: 应用量子化学和分子力学方法研究乙酰胆碱酯酶催化疏代乙酰胆碱水解反应中的乙酰化反应,计算了反应物、过渡态、产物及中间体的几何结构-及电子结构.结果表明,乙酰化反应机理是质子化和亲核进攻同时进行的协同机理.

关键词: 乙酰胆碱酯酶, 硫代乙酰胆碱, 过渡态, 反应机理, 量子化学

Abstract: Quantum chemical and molecular mechanical methods were employed to study the acylation in the acetylthiocholine hydrolysis catalyzed by acetylcholinesterase. The molecular and electronic structures of the reactants, transition states(TS), products and intermediates were calculated. The results show that the concerted mechanism of protonation and nucleophilic attack proceeding simultaneously in the course of acylation is reasonable.

Key words: Acetylcholinesterase, Acetylthiocholine, Transition state, Reaction mechanism, Quantum chemistry

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