Article
Expression optimization and biochemical characterization of a recombinant gamma-glutamyltranspeptidase from Escherichia coli novablue.
The protein journal - 1 Sept 2006
Yao Ya-Feng, Weng Yih-Ming, Hu Hui-Yu, Ku Kuo-Lung, Lin Long-Liu
Abstract excerpt
A truncated Escherichia coli Novablue gamma-glutamyltranspeptidase (EcGGT) gene lacking the first 48-bp coding sequence for part of the signal sequence was amplified by polymerase chain reaction and cloned into expression vector pQE-30 to generate pQE-EcGGT. The maximum production of His(6)-tagged enzyme by E. coli M15 (pQE-EcGGT) was achieved with 0.1 mM IPTG induction for 12 h at 20 degrees C. The overexpressed...
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