高等学校化学学报 ›› 1999, Vol. 20 ›› Issue (1): 37.

• 论文 • 上一篇    下一篇

白眉蝮蛇蛇毒L-氨基酸氧化酶的纯化与表征

孙明忠, 丁兰, 赵大庆, 倪嘉缵   

  1. 中国科学院长春应用化学研究所稀土化学与物理开放实验室, 长春 130022
  • 收稿日期:1998-06-25 出版日期:1999-01-24 发布日期:1999-01-24
  • 基金资助:

    吉林省科学技术委员会资助

Purif ication and Characterization of L-Amino Acid Oxidase from Agkist rodon Blomhof fii Ussurensis Snake Venom of Changbai Mountains

SUN Ming-Zhong, DING Lan, ZHAO Da-Qing, NI Jia-Zua   

  1. Laboratory of Rare Earth Chemistry and Physics, Changchun Institute of Applied Chemistry, Chinese Acadamy of Sciences, Changchun, 130022
  • Received:1998-06-25 Online:1999-01-24 Published:1999-01-24

摘要: 用离子交换和凝胶过滤层析技术从长白山白眉蝮蛇蛇毒(Agkistrodonblomhoffiusurensis)中分离得到了L氨基酸氧化酶(Laminoacidoxidase),经SDS聚丙烯酰胺凝胶电泳(SDSPAGE)和基体辅助激光解吸电离飞行时间质谱(MALDITOFMS)鉴定,发现L氨基酸氧化酶由两个不相等的亚基组成,一个亚基的分子量约为36000,另一个亚基分子量约为57000.以L-亮氨酸作为底物进行L-氨基酸氧化酶活力测定时发现,其反应的适宜pH值为45.5和89,紫外吸收光谱明显表现出核黄素蛋白的特征.

关键词: 白眉蝮蛇蛇毒, L-氨基酸氧化酶, 纯化, 表征

Abstract: The L-a.a.oxidase of Agkist rodon blom hoffii ussurensis of Changbai Mountains in northeast of China has been separated by using ion-exchange and gel filtration techniques.This enzyme is composed of two subunits, The molecular weight of one subunit is about 36000, The another is about 57000, determined by sodium dodecyl sulfate-polyacryamide gelelectrophoresis and mat rix assisted laser desorptionion/time of flight mass spect rometry.The activity of L-a.a.oxidase determined using L-Leu as substrate.The optimal pHof the enzyme is 4.55and 89.The UV-Visible absorption spectrum of L-a.a.oxidase shows the characteristics of flavorpro-teins.

Key words: A gkist rodon blom hoffii ussurensis snake venom, L-Amino acid oxidase, Purifica-tion, Characterization

中图分类号: 

TrendMD: