南京林业大学学报(自然科学版) ›› 1997, Vol. 21 ›› Issue (02): 50-53.doi: 10.3969/j.jssn.1000-2006.1997.02.011

• 研究论文 • 上一篇    下一篇

新鲜香菇子实体漆酶的纯化与性质

叶汉玲;王传槐;JohnA.Buswel   

  1. 南京林业大学;香港中文大学
  • 出版日期:1997-06-18 发布日期:1997-06-18

PURIFICATION AND PROPERTIES OF LACCASE FROM FRESH FRUIT BODY OF LENTINULA EDODES

Ye Hanling Wang Chuanhuai John A.Buswell(Nanjing Forestry University Nanjing 210037)   

  1. Chinese University of Hong Kong
  • Online:1997-06-18 Published:1997-06-18

摘要: <正>用硫酸铵分级沉淀,离子交换纤维素柱层析分离技术,对香菇〔Lentinula(Lentinus)e-dodes〕子实体漆酶进行分离纯化,得到单一组分的漆酶,通过SDS-PAGE凝胶电泳法,测得其摩尔式量为55000。研究表明该酶的最适pH为2.6,最适温度为70℃,酶的动力学研究测出米氏常数Km值为0.142mmol。

Abstract: Through systematical process for isolation and purification of laccase from fresh fruit body of Lenlinula edodes using the technique (NH4)2SO4 fractionation and ionexchange chromatography.We obtained one component of laccase,it showed homogeneity in the gel electrophorosis.The molecular weight was 55 000 by SDSPAGE,The optimum pH, temparature were 2.6 ℃ and 70 ℃,respectively. The studies of enzyme kinetics showed Km=0142 mmol