A fluoride-responsive genetic circuit enables in vivo biofluorination in engineered Pseudomonas putida

Patricia Calero, Daniel C. Volke, Phillip T. Lowe, Charlotte H. Gotfredsen, David O’Hagan and Pablo I. Nikel ()
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Patricia Calero: Technical University of Denmark
Daniel C. Volke: Technical University of Denmark
Phillip T. Lowe: University of St. Andrews
Charlotte H. Gotfredsen: Technical University of Denmark
David O’Hagan: University of St. Andrews
Pablo I. Nikel: Technical University of Denmark

Nature Communications, 2020, vol. 11, issue 1, 1-11

Abstract: Abstract Fluorine is a key element in the synthesis of molecules broadly used in medicine, agriculture and materials. Addition of fluorine to organic structures represents a unique strategy for tuning molecular properties, yet this atom is rarely found in Nature and approaches to integrate fluorometabolites into the biochemistry of living cells are scarce. In this work, synthetic gene circuits for organofluorine biosynthesis are implemented in the platform bacterium Pseudomonas putida. By harnessing fluoride-responsive riboswitches and the orthogonal T7 RNA polymerase, biochemical reactions needed for in vivo biofluorination are wired to the presence of fluoride (i.e. circumventing the need of feeding expensive additives). Biosynthesis of fluoronucleotides and fluorosugars in engineered P. putida is demonstrated with mineral fluoride both as only fluorine source (i.e. substrate of the pathway) and as inducer of the synthetic circuit. This approach expands the chemical landscape of cell factories by providing alternative biosynthetic strategies towards fluorinated building-blocks.

Date: 2020
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DOI: 10.1038/s41467-020-18813-x

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