Transcription Factor Engineering for High-Throughput Strain Evolution and Organic Acid Bioproduction: A Review

Frontiers in Bioengineering and Biotechnology
Jia-Wei LiYun-Peng Bai

Abstract

Metabolic regulation of gene expression for the microbial production of fine chemicals, such as organic acids, is an important research topic in post-genomic metabolic engineering. In particular, the ability of transcription factors (TFs) to respond precisely in time and space to various small molecules, signals and stimuli from the internal and external environment is essential for metabolic pathway engineering and strain development. As a key component, TFs are used to construct many biosensors in vivo using synthetic biology methods, which can be used to monitor the concentration of intracellular metabolites in organic acid production that would otherwise remain "invisible" within the intracellular environment. TF-based biosensors also provide a high-throughput screening method for rapid strain evolution. Furthermore, TFs are important global regulators that control the expression levels of key enzymes in organic acid biosynthesis pathways, therefore determining the outcome of metabolic networks. Here we review recent advances in TF identification, engineering, and applications for metabolic engineering, with an emphasis on metabolite monitoring and high-throughput strain evolution for the organic acid bioproduction.

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Citations

Aug 9, 2020·Frontiers in Bioengineering and Biotechnology·Daejin LimMiryoung Song
Mar 6, 2021·Microbial Cell Factories·Zi-Xu LiuJu-Zheng Sheng
Jul 6, 2021·Nucleic Acids Research·Vasily A ShenshinYannick Rondelez
Jul 24, 2021·Chemical Reviews·Yajie WangHuimin Zhao

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Methods Mentioned

BETA
biosensors
one-hybrid
biosensor
fluorescence-activated
FACS

Software Mentioned

CollecTF

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