食品科学 ›› 2004, Vol. 25 ›› Issue (3): 51-54.

• 基础研究 • 上一篇    下一篇

乌骨鸡红细胞超氧化物歧化酶的分离纯化及部分性质的研究

 张兰杰, 辛广, 张维华, 袁勤生   

  1. 鞍山师范学院化学系,华东理工大学生命科学学院
  • 出版日期:2004-03-15 发布日期:2011-10-24

Studies on Purification and Properties of Superoxide Dismutase Isolated from Black-bone Chicken Erythrocytes

 ZHANG  Lan-Jie, XIN  Guang, ZHANG  Wei-Hua, YUAN  Qin-Sheng   

  1. 1.Department of Chemistry,Anshan Normal University;2.College of Life Science,East China University of Technology
  • Online:2004-03-15 Published:2011-10-24

摘要: 经氯仿-乙醇分级分离,丙酮沉淀及DE-32纤维素柱层析的方法,从乌骨鸡红细胞中得到纯化的Cu,Zn-SOD。结果表明此酶的比活力为11,954U/mg,提纯倍数为334.71,聚丙烯酰胺凝胶电泳蛋白带与活性带相对应。相对分子量约为32,000,相对亚基分子量约为16,000。最大紫外吸收波长为260nm,对KCN和H2O2敏感,最适pH为6~9,热稳定性在60℃以下。

关键词: 乌骨鸡, 红细胞, 铜锌超氧化物歧化酶, 纯化, 性质

Abstract: Copper/zinc superoxide dismutase (Cu,Zn-SOD) from black-bone chicken erythrocytes has been purified bychloroform-ethanol fractionation through acetone precipitation and DE-32 chromatography. The results showed that the spe-cific activity of the enzyme was 11,954U/mg , and its purification factor was 334.71. This enzyme showed two identicalsubunits.The molecular weight was about 32,000,and the identical subunit molecular weigh about 16,000.The ultraviolet ab-sorption peak of the enzyme was found at 260nm .The enzyme was sensitive to KCN and H2O2.The enzyme optimum pH wasfrom 6 to 9 and stable below 60℃.

Key words: Black-bone chicken, erythrocytes, cupper/zinc superoxide dismutase (Cu,Zn-SOD), purification, property