Vasil'eva E I, Goncharenko E N, Gudz' T I, Samoĭlenko I I
Nauchnye Doki Vyss Shkoly Biol Nauki. 1984(9):30-3.
Superoxide dismutase and catalase activity has been studied in isogenous strains of various radioresistance bacteria. In mutants Micrococcus radiodurans having defects in the systems of DNA repair the superoxide dismutase activity is lower than in cells of wild type. The changes of catalase and superoxide dismutase activity have not been revealed in investigated strains Escherichia coli differing in radioresistance. It has been concluded that the survival of bacteria exposed to ionizing radiation is determined by the effectiveness of DNA repair systems realiability of which depends on the catalase and superoxide dismutase activity.
已对各种抗辐射细菌的同源菌株中的超氧化物歧化酶和过氧化氢酶活性进行了研究。在DNA修复系统存在缺陷的耐辐射微球菌突变体中，超氧化物歧化酶活性低于野生型细胞。在所研究的抗辐射能力不同的大肠杆菌菌株中，未发现过氧化氢酶和超氧化物歧化酶活性的变化。得出的结论是，暴露于电离辐射的细菌的存活取决于DNA修复系统的有效性，而其可靠性取决于过氧化氢酶和超氧化物歧化酶的活性。
