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Production of itaconic acid from alkali pretreated lignin by dynamic two stage bioconversion

Nat Commun. 2021-04; 
Joshua R Elmore, Gara N Dexter, Davinia Salvachúa, Jessica Martinez-Baird, E Anne Hatmaker, Jay D Huenemann, Dawn M Klingeman, George L Peabody, Darren J Peterson, Christine Singer, Gregg T Beckham, Adam M Guss
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Bacterial Expression For construction of pJE1479, we had IDT or GenScript synthesize portions of a cassette that contains a P. putida codon-optimized E. coli xylE xylose Get A Quote

摘要

Expanding the portfolio of products that can be made from lignin will be critical to enabling a viable bio-based economy. Here, we engineer Pseudomonas putida for high-yield production of the tricarboxylic acid cycle-derived building block chemical, itaconic acid, from model aromatic compounds and aromatics derived from lignin. We develop a nitrogen starvation-detecting biosensor for dynamic two-stage bioproduction in which itaconic acid is produced during a non-growth associated production phase. Through the use of two distinct itaconic acid production pathways, the tuning of TCA cycle gene expression, deletion of competing pathways, and dynamic regulation, we achieve an overall maximum yield of 56% (mol/mol) ... More

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