Fangfang Chang, Yuheng Wang, Jie Zhang, Tao Tu, Huiying Luo, Huoqing Huang, Yingguo Bai, Xing Qin, Yaru Wang, Bin Yao, Yuan Wang, Xiaolu Wang
γ-Aminobutyric acid (GABA) has been widely used in the food, feed, pharmaceutical, and chemical industry fields. Previously, we developed a whole-cell catalyst capable of converting L-glutamate (L-Glu) into GABA by overexpressing the glutamate decarboxylase gene (gadz11) from Bacillus sp. Z11 in Escherichia coli BL21(DE3). However, to enhance cell permeability, a freeze-thaw treatment is required, and to enhance GADZ11 activity, pyridoxal 5'-phosphate (PLP) must be added to the reaction system. The aim of this study is to provide a more efficient approach for GABA production by engineering the recombinant E...
December 13, 2023: Enzyme and Microbial Technology