High-level expression of maize C-4-type phosphoenolpyruvate carboxylase in Escherichia coli and its rapid purification

被引:13
作者
Dong, LY [1 ]
Hata, S [1 ]
Izui, K [1 ]
机构
[1] KYOTO UNIV, FAC AGR, APPL BOT LAB, SAKYO KU, KYOTO 60601, JAPAN
关键词
phosphoenolpyruvate carboxylase; expression; purification; pET32; plasmid;
D O I
10.1271/bbb.61.545
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Maize C-4-type phosphoenolpyruvate carboxylase (PEPC) was expressed in E. coli with the pET32 system. The expressed fusion PEPC was active and its amount comprised more than 10% of total soluble protein, The specific activity increased by about 45-fold, compared with our previous system [S. Yanagisawa and K. Izui, Agr ic. Biol, Chem., 54, 241-243 (1990)]. The fusion PEPC was rapidly purified with His bind metal chelation resin, showing a single band on SDS-PAGE, Moreover, the tag domain fused at the N-terminus did not have any effect on catalytic and regulatory properties of PEPC.
引用
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页码:545 / 546
页数:2
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