课堂教学随笔:脱氢酶是不是氧化酶?  

An essay on classroom teaching of Biochemistry:is dehydrogenase an oxidase?

作　　者：陈尚武[1] CHEN Shangwu(Department of Biochemistry,School of Life Sciences,Sun Yat-sen University,Guangzhou 510275,China)

机构地区：[1]中山大学生命科学学院生物化学系,广州510275

出　　处：《生命的化学》2020年第11期2080-2084,共5页Chemistry of Life

基　　金：国家自然科学基金项目(31670788);中山大学本科教学质量工程类项目。

摘　　要：氧化还原反应是物质代谢中的一类重要反应,催化这类反应的酶统称为氧化还原酶。然而教材中的氧化还原酶名称各异。学生常常疑惑,看似类似的反应,酶的名称却不同。氧化还原酶的系统命名原则主要取决于酶作用的对象以及氧化或脱氢的电子受体,一般称之为A∶B氧化还原酶(A电子的供体,B电子的受体),但习惯上推荐使用的名称则因所催化的反应不同而异。脱氢酶和氧化酶同属于氧化还原酶类,但催化不同类型的反应,因此不能混淆。本文拟归纳氧化还原酶类中各种酶的功能特点,以期对青年教师和学生的教、学有所帮助。Redox reaction is a kind of important reaction in material metabolism.The enzymes catalyzing this kind of reactions are called oxidoreductases.However,there are different names for oxidoreductases in textbooks.Students often wonder why the names of enzymes catalyzing similar reactions are different.The principle of oxidoreductase nomenclature mainly depends on the object of the enzyme acting on and the electron acceptor of oxidation or dehydrogenation.It is generally called A∶B oxidoreductase(A,the donor of electron;B,the acceptor of electron),but the accepted name in practice varies with the reaction it catalyzes.Dehydrogenase and oxidase belong to the oxidoreductases,but they catalyze different types of reactions.Therefore,they should not be confused.This paper will summarize the functional characteristics of various enzymes in oxidoreductases in order to help young teachers and students in their teaching and learning.

关 键 词：氧化还原反应 氧化还原酶 氧化酶 脱氢酶 加氧酶 

分 类 号：Q5-4[生物学—生物化学] G642[文化科学—高等教育学]