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猪血超氧化物岐化酶的研究(Ⅰ) 猪血超氧化物岐化酶分子量的测定及稳定性的研究
Studies on the porcine Blood Superoxide Dismutase (Ⅰ)Determination of Molecular Weight of porcine Blood Superoxide Dismutase and Studies on Its S tabili ty
【摘要】 猪血SOD是铜锌酶,分子量31600,对温度敏感,PH7.6~9.0稳定,PH6.0以下,PH12.0以上不稳定。具较强的抗胃蛋白酶和胰蛋白酶水解能力。
【Abstract】 The porcine blood superoxide dismutase was Copper-Zine superoxide di smutase ( Cu-Zn SOD). Molecular weight of the SOD was 31600. The enzyme was hea.t-labile. Incubation at 37℃ for 5 hours made its activity decreasad by 10%; at 70℃ 2 hours decreased by 50%; at 90℃ for 1 hour the enzyme activity was completely lossed. The SOD was at pH 7 - 9. It was unstable at pH<6 or>12.O. the SOD was quite resistant to proteolysis of pepsin and trypsin.
- 【文献出处】 河北大学学报(自然科学版) ,Journal of Hebei University(Natural Science Edition) , 编辑部邮箱 ,1986年04期
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