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Development and evaluation of efficient recombinant Escherichia coli strains for the production of 3-hydroxypropionic acid from glycerol

3-Hydroxypropionic acid (3-HP) is a commercially valuable chemical with the potential to be a key building block for deriving many industrially important chemicals. However, its biological production has not been well documented. Our previous study demonstrated the feasibility of producing 3-HP from...

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Published in:Biotechnology and bioengineering 2009-11, Vol.104 (4), p.729-739
Main Authors: Rathnasingh, Chelladurai, Raj, Subramanian Mohan, Jo, Ji-Eun, Park, Sunghoon
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description 3-Hydroxypropionic acid (3-HP) is a commercially valuable chemical with the potential to be a key building block for deriving many industrially important chemicals. However, its biological production has not been well documented. Our previous study demonstrated the feasibility of producing 3-HP from glycerol using the recombinant Escherichia coli SH254 expressing glycerol dehydratase (DhaB) and aldehyde dehydrogenase (AldH), and reported that an "imbalance between the two enzymes" and the "instability of the first enzyme DhaB" were the major factors limiting 3-HP production. In this study, the efficiency of the recombinant strain(s) was improved by expressing DhaB and AldH in two compatible isopropyl-thio-β-galactoside (IPTG) inducible plasmids along with glycerol dehydratase reactivase (GDR). The expression levels of the two proteins were measured. It was found that the changes in protein expression were associated with their enzymatic activity and balance. While cloning an alternate aldehyde dehydrogenase (ALDH), α-ketoglutaric semialdehyde dehydrogenase (KGSADH), instead of AldH, the recombinant E. coli SH-BGK1 showed the highest level of 3-HP production (2.8 g/L) under shake-flask conditions. When an aerobic fed-batch process was carried out under bioreactor conditions at pH 7.0, the recombinant SH-BGK1 produced 38.7 g 3-HP/L with an average yield of 35%. This article reports the highest level of 3-HP production from glycerol thus far. Biotechnol. Bioeng. 2009; 104: 729-739
doi_str_mv 10.1002/bit.22429
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subjects 3-hydroxypropionaldehyde
3-hydroxypropionic acid
aldehyde dehydrogenase
Aldehyde Dehydrogenase - genetics
Aldehyde Dehydrogenase - metabolism
Bacterial proteins
Biological and medical sciences
Biosynthetic Pathways - genetics
Biotechnology
Chemicals
Cloning
E coli
Enzymes
Escherichia coli
Escherichia coli - genetics
Escherichia coli - metabolism
Escherichia coli Proteins - genetics
Escherichia coli Proteins - metabolism
Fundamental and applied biological sciences. Psychology
Gene Expression
Gene Expression Regulation, Bacterial
Genetic Engineering
glycerol
Glycerol - metabolism
glycerol dehydratase
Hydro-Lyases - genetics
Hydro-Lyases - metabolism
Lactic Acid - analogs & derivatives
Lactic Acid - biosynthesis
Plasmids
Promoter Regions, Genetic
Recombination, Genetic
Studies
α-ketoglutaric semialdehyde dehydrogenase
title Development and evaluation of efficient recombinant Escherichia coli strains for the production of 3-hydroxypropionic acid from glycerol
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