Metabolic engineering of Escherichia coli for L-homoserine production].

Bo Zhang, Zhenhao Yao, Zhiqiang Liu, Yuguo Zheng

Sheng wu gong cheng xue bao = Chinese journal of biotechnology 2021 Apr 25

filter terms:

L-Homoserine is a non-essential amino acid that is often used as an important platform compound and additive in industrial production. To improve the production efficiency, a previously constructed L-homoserine producing strain E. coli H0-0 was used as a chassis for further metabolic modification. Firstly, the ppc and pyccgP458S genes were overexpressed to optimize the Kreb's cycle. Subsequently, thrAC1034T and lysCcgC932T were overexpressed to improve the product synthesis, followed by inactivation of iclR gene to reduce the accumulation of by-products. The introduction of three sucrose metabolism genes, scrA, scrB and scrK, enabled E. coli to ferment sucrose. The titer of L-homoserine increased from 3.2 g/L to 11.1 g/L.

Citation

Bo Zhang, Zhenhao Yao, Zhiqiang Liu, Yuguo Zheng. Metabolic engineering of Escherichia coli for L-homoserine production]. Sheng wu gong cheng xue bao = Chinese journal of biotechnology. 2021 Apr 25;37(4):1287-1297