Chemo-enzymatic cascades to produce cycloalkenes from bio-based resources

Shuke Wu (), Yi Zhou, Daniel Gerngross, Markus Jeschek and Thomas R. Ward ()
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Shuke Wu: University of Basel
Yi Zhou: University of Basel
Daniel Gerngross: ETH Zurich
Markus Jeschek: ETH Zurich
Thomas R. Ward: University of Basel

Nature Communications, 2019, vol. 10, issue 1, 1-10

Abstract: Abstract Engineered enzyme cascades offer powerful tools to convert renewable resources into value-added products. Man-made catalysts give access to new-to-nature reactivities that may complement the enzyme’s repertoire. Their mutual incompatibility, however, challenges their integration into concurrent chemo-enzymatic cascades. Herein we show that compartmentalization of complex enzyme cascades within E. coli whole cells enables the simultaneous use of a metathesis catalyst, thus allowing the sustainable one-pot production of cycloalkenes from oleic acid. Cycloheptene is produced from oleic acid via a concurrent enzymatic oxidative decarboxylation and ring-closing metathesis. Cyclohexene and cyclopentene are produced from oleic acid via either a six- or eight-step enzyme cascade involving hydration, oxidation, hydrolysis and decarboxylation, followed by ring-closing metathesis. Integration of an upstream hydrolase enables the usage of olive oil as the substrate for the production of cycloalkenes. This work highlights the potential of integrating organometallic catalysis with whole-cell enzyme cascades of high complexity to enable sustainable chemistry.

Date: 2019
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DOI: 10.1038/s41467-019-13071-y

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