一种麦芽酸性磷酸酶的分离纯化及部分性质研究

被引:2
作者
杨彩兰
陈巍
苟春宝
王勇
魏炜
机构
[1] 四川大学生命科学学院生物资源与生态环境教育部重点实验室
关键词
麦芽; 酸性磷酸酶; 分离纯化; 动力学性质;
D O I
暂无
中图分类号
Q814 [酶工程];
学科分类号
082203 ;
摘要
经硫酸铵分级沉淀、CM-Sepharose CL 4B和DEAE-Sepharose CL 4B离子交换柱层析等步骤,从麦芽中分离提纯到一种酸性磷酸酶(ACPase,E.C.3.1.3.2),纯化倍数为33.06,酶液比活为88.27 U/mg.通过动力学方法测得其最适pH为5.4,酸碱稳定性较差,仅在pH6.0左右的缓冲液中较稳定;最适温度为50℃,40℃以下有较好的稳定性;在最适条件下,该酶催化pNPP的米氏常数(Km)为4.696×10-4mol/L.同时研究了一些金属离子和有机化合物对该酶活性的影响.
引用
收藏
页码:206 / 212
页数:7
相关论文
共 18 条
[11]  
Acid phosphatase activities during the germination of Glycine max seeds. JN Prazeres,CV Ferreira,H Aoyama. Plant physiology and Biochemistry . 2004
[12]  
Characterisationoftwoproteinphosphatase2Aholoenzymesfrommaizeseedlings. AwotundeOS,SugajskaE,ZolnierowiczS,MuszynskaG. Biochimica et Biophysica Acta . 2000
[13]  
Purification and characterization of multiple forms of soybean seed acid phosphatase. Ferreira C V,Granjeiro J M,Taga E M,Aoyama H. Plant physiology and Biochemistry . 1998
[14]  
Induction of acid phosphatase activity during germination of maize(Zea mays) seed. R.Senna,et al. Plant Physiology . 2006
[15]  
Purification and characterization of acid phosphatase of from yellow lupin(lupinus luteus)seeds. Olczak M,Watorek W,Morawiecka B. Biochimica et Biophysica Acta . 1997
[16]  
Isolation and char- acterization of a homogeneous isoenzyme of wheat germ acid phosphatase. Waymack P P,Van Etten R L. Archive of Biochemistry and Biophysics . 1991
[17]  
Purification and some properties of wheat germ acid phosphatases. Kawarasak Y,Nakano H,Yaman T. Plant Science . 1996
[18]  
生化实验方法和技术[M]. 高等教育出版社 , 张龙翔等主编, 1997