论文部分内容阅读
超氧化物歧化酶(Superoxide dismutase,即SOD)是有效的自由基O_2~(?)的清除剂,其抗辐射效用是阻止辐射引起的自由基的异常增加,将超氧离子歧化成过氧化氢和分子氧:SOD2O_2+2H~+→H_2O_2+O_2反应所形成的H_2O_2可由体内过氧化氢酶予以分解。关于SOD抗辐射效应的研究曾有过较多报导,然而过去人们所用的SOD大都从真核生物中提取,而从原核生物中提取的SOD的抗辐射研究尚少见报导,且从真核生物中提取SOD还存在材料来源困难和得
Superoxide dismutase (SOD) is an effective scavenger of free radical O 2 ~ (?), Its anti-radiation effect is to prevent the radiation-induced abnormal increase of free radicals, the superoxide dismutase into hydrogen peroxide And the molecular oxygen: H 2 O 2 formed by the reaction of SOD 2 O 2 + 2H ~ + → H 2 O 2 + O 2 can be decomposed by catalase in the body. There have been many reports about the anti-radiation effect of SOD. However, most of the SODs used in the past were extracted from eukaryotes. However, the anti-radiation study of SOD extracted from prokaryotes has not been reported yet. Extraction of SOD is still difficult to obtain sources of materials