Abstract
The current study aimed to construct a functionally reversed β-oxidation cycle in Escherichia coli for the production of adipic acid, one of the most important dicarboxylic acids. Starting from the condensation of acetyl-CoA and succinyl-CoA, a synthetic pathway mimicking a reversed β-oxidation cycle was constructed in E. coli to produce adipyl-CoA, consisting of four enzymatic steps. Products of the synthetic pathway were confirmed by liquid chromatography-tandem mass spectrometry. To convert adipyl-CoA into adipic acid, a putative adipyl-CoA thioesterase (encoded by Acot8 from Mus musculus) was selected, and its functional expression in E. coli was confirmed by gas chromatography-mass spectrometry. Finally, when the reversed β-oxidation cycle and Acot8 were co-expressed in E. coli, the resulting strain produced 12 μg/L of adipic acid from glucose. These results suggest that the synthetic adipic acid pathway functions in E. coli but requires further optimization for increased production of adipic acid.
Original language | English |
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Pages (from-to) | 2066-2071 |
Number of pages | 6 |
Journal | Process Biochemistry |
Volume | 50 |
Issue number | 12 |
DOIs | |
State | Published - 1 Dec 2015 |
Keywords
- Acetyl-CoA
- Acot8
- Adipic acid
- Dicarboxylic acid
- Succinyl-CoA
- β-Oxidation cycle