高等学校化学学报 ›› 1997, Vol. 18 ›› Issue (3): 364.

• 论文 • 上一篇    下一篇

动力学分析方法检测酶反应活性中间体的研究

蔡汝秀1, 吴新国2, 林智信1, 程介克1   

  1. 1. 武汉大学化学系, 武汉, 430072;
    2. 武汉大学环境科学系, 武汉
  • 收稿日期:1996-03-19 出版日期:1997-03-24 发布日期:1997-03-24
  • 通讯作者: 蔡汝秀, 女, 56岁, 教授, 博士导师.
  • 作者简介:蔡汝秀, 女, 56岁, 教授, 博士导师.
  • 基金资助:

    国家自然科学基金

Studies on Kinetic Method for Detecting Active Intermediate in Enzyme Reaction

CAl Ru-Xiu1, WU Xin-Guo2, LIN Zhi-Xin1, CHENG Jie-Ke1   

  1. 1. Department of Chemistry, Wuhan University, Wuhan, 430072;
    2. Department of Enuironment Sciencet, Wuhan University, Wuhan, 430072
  • Received:1996-03-19 Online:1997-03-24 Published:1997-03-24

摘要: 提出了一种检测酶反应活性中间体的动力学新方法.利用中间体的反应活性,加入合适的竞争剂使中间体在转化为产物的同时能与竞争剂反应.监测中间体与竞争剂反应的动力学过程以获得中间体信息.该法既能研究自由基中间体,也能研究非自由基中间体,便于研究快反应和跟踪动态过程.用该法对辣根过氧化物酶催化过氧化氢氧化去甲肾上腺素的中间过程进行了研究.

关键词: 动力学方法, 中间体, 辣根过氧化物酶, 去甲肾上腺素

Abstract: Anew kinetic method is proposed for detecting active intermediate in enzyme reaction.Due to the reactivity of the intermediate, a proper competition reagent which reactswith the intermediate while the intermediate changes to final product, can be found andadded.By detecting the klnetic process of intermediate reaction with reagent, the information of intermediate can be obtained.The method can be used to study free radical intermediate and non-free-radical intermediate, to study fast reaction and to follow transient process.With this method, the intermediate process in oxidation reaction of norepinephrine with hydrogen peroxide, catalyzed by horseradish peroxidase, is investigated.

Key words: Kinetic method, Intermediate, Horseradish peroxidase, Norepinephrine

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