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前言自本世纪五十年代从牛心中提取乳酸脱氢酶(LDH),发现其有异质性以来,对同功酶的研究有很大的进展。特别是七十年代初分离技术的改革,应用同功酶分析的研究更为广泛。植物同功酶的研究也有所突破,在遗传育种、生理生化、病理等许多方面取得成果。 POD(过氧化物酶Peroxidase,E、C、1、11、1、7)是一族能利用过氧化氢体的酶,对H_2O_2要求专一,但对供氢体的要求很广泛。酚、胺类化合物,某些杂环化合物,甚至一些无机离子也可作为该酶的供氢体。 AH_2+H_2O_2(?)→A+H_2O POD的生理作用前人也作过很多研究,特别是辣根过氧化物酶。认为可起到吲哚乙酸氧化酶的作用,还有增强木质化以及对感病、日光照射有保护作用。
Introduction Since the 1950s, lactate dehydrogenase (LDH) was extracted from bovine heart and found to be heterogeneous, great progress has been made in the study of isozymes. Especially in the early seventies separation technology reform, the application of isozyme analysis of the study more widely. Research on plant isozymes has also made breakthroughs in many aspects such as genetic breeding, physiology, biochemistry and pathology. POD (peroxidase, Peroxidase, E, C, 1, 11, 1, 7) is a family of enzymes that can make use of hydrogen peroxide, which is specific to H 2 O 2 but has a wide range of requirements for hydrogen donor. Phenols, amines, some heterocyclic compounds, and even some inorganic ions also serve as hydrogen donors for the enzyme. Physiological effects of AH_2 + H_2O_2 (?) → A + H_2O POD Many previous studies have been made, especially horseradish peroxidase. That can play the role of indole acetic acid oxidase, but also enhance the lignification and susceptibility to infection, sunlight protection.