高等学校化学学报 ›› 1996, Vol. 17 ›› Issue (5): 735.

• 论文 • 上一篇    下一篇

葡萄糖异构酶的固定化及其性质研究

葛玉斌1, 王立平1, 孔维1, 周慧1, 李惟1, 沈家骢2   

  1. 1. 吉林大学分子生物学系, 长春 130023;
    2. 吉林大学化学系, 长春 130023
  • 收稿日期:1995-05-16 出版日期:1996-05-24 发布日期:1996-05-24
  • 通讯作者: 葛玉斌,男,26岁,博士研究生.
  • 作者简介:葛玉斌,男,26岁,博士研究生.
  • 基金资助:

    国家自然科学基金

Studies on the Immobilization of glucose Isomerase and the Properties of the Immobilized Glucose Isomerase

GE Yu-Bin1, WANG Li-Ping1, KONG Wei1, ZHOU Hui1, LI Wei1, SHEN Jia-Cong2   

  1. 1. Department of Molecular biology, Jilin University, changchun 130023;
    2. Department of chemistry, Jilin University, changchun 130023
  • Received:1995-05-16 Online:1996-05-24 Published:1996-05-24

摘要: 用分子沉积法,在多孔三甲胺基聚苯乙烯载体上成功地固定化了双层葡萄糖异构酶。结果表明,这种新固定化酶方法能使单位重量的固定化酶活力及蛋白载量成倍增加,活力达到1200IU/g湿胶。与吸附法相比,酶活力提高1倍;其半衰期与吸附法相比则基本相同,为45d.还确定了最佳固定化条件并测定了固定化酶的性质。固定化酶的最适反应温度比液相酶提高15℃,而最适pH值则没有改变。Km值与液相酶的相比有一定程度的增加,稳定性与吸附法相比则基本相同。

关键词: 葡萄糖异构酶, 固定化, 分子沉积

Abstract: In this paper we successfully immobilized bilayer glucose isomerase in porous ptrimethylamine-polystyrene(TMPS)beads by use of a new method of immobilization of enzyme──molecular-deposition.The effects of immobilizing time,the concentration of nature enzyme, the concentration of hexamethylene bis(trimethylammonium bromide), the concentration BCDwere investigated.The properties of this immobilized enzyme were also studied.The results obtained show that the activity and the protein loading of per weight bilayer immobilized enzyme are doubled as compared to monolayer immobilized enzyme.The activity of immobilized bilayer glucose isomerase is 1200 IU/g wet gel.

Key words: Glucose isomerase, Immobilization, Molecular deposition

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