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在臭氧(O_3)毒性和其他氧化剂作用中均与氧基有关。本研究观察了O_3对大肠杆菌(E.coli)的抗氧化酶过氧化氢酶和超氧化物歧化酶(SOD)的生物合成的影响,来确定该二酶在抗O_3毒性中的作用。发现置O_3环境中培养物的生长被抑制且活力下降。结果还表明置于O_3环境中培养的E.coli过氧化氢酶和SOD的活性增加是酶真正诱生,而不是由先存在的脱辅基蛋白的激活。除去O_3
Oxygen is involved in ozone (O 3) toxicity and other oxidative effects. This study investigated the effect of O_3 on the biosynthesis of the antioxidant enzyme catalase and superoxide dismutase (SOD) in E. coli to determine the role of this enzyme in the anti-O_3 toxicity. The growth of culture in O_3 environment was found to be inhibited and the vitality decreased. The results also show that increased activity of E. coli catalase and SOD incubated in an O 3 environment is actually induced by the enzyme rather than by pre-existing apoprotein activation. Remove O_3