Enzymes are the catalyst of choice for highly selective reactions, offering nature-inspired approaches for sustainable chemical synthesis. Oxidative enzymes (, monooxygenases, peroxygenases, oxidases, or dehydrogenases) catalyze a variety of enantioselective oxyfunctionalization and dehydrogenation reactions under mild conditions. To sustain the catalytic cycles of these enzymes, constant supply with or withdrawal of reducing equivalents (electrons) is required. Being redox by nature, photocatalysis appears a 'natural choice' to accomplish the electron-relay role, and many photoenzymatic oxidation reactions have been developed in the past years. In this contribution, we critically summarize the current developments in photoredoxbiocatalysis, highlight some promising concepts but also discuss the current limitations.
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http://dx.doi.org/10.1039/d2sc03483b | DOI Listing |
ACS Catal
December 2024
Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool L69 7ZB, U.K.
Synthetic photobiocatalysts are promising catalysts for valuable chemical transformations by harnessing solar energy inspired by natural photosynthesis. However, the synergistic integration of all of the components for efficient light harvesting, cascade electron transfer, and efficient biocatalytic reactions presents a formidable challenge. In particular, replicating intricate multiscale hierarchical assembly and functional segregation involved in natural photosystems, such as photosystems I and II, remains particularly demanding within artificial structures.
View Article and Find Full Text PDFBiodes Res
July 2024
Key Laboratory of Engineering Biology for Low-Carbon Manufacturing, TianjinInstitute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin 300308, China.
Terpenoids of substantial industrial interest are mainly obtained through direct extraction from plant sources. Recently, microbial cell factories or in vitro enzymatic biosystems have emerged as promising alternatives for terpenoid production. Here, we report a route for the synthesis of α-farnesene based on an in vitro enzyme cascade reaction using methanol as an inexpensive and renewable C1 substrate.
View Article and Find Full Text PDFRSC Adv
February 2024
State Key Laboratory of High-efficiency Coal Utilization and Green Chemical Engineering, College of Chemistry & Chemical Engineering, Ningxia University Yinchuan 750021 China
The demand for HO restricts the wider application of horseradish peroxidase (HRP) in degradation. In this work, a novel photoenzyme synergistic catalytic system was developed for high-efficiency degrading of indole in water by HRP without extra HO. The HRP was immobilized on CN-ZIF prepared by the combination of g-CN and ZIF-8 to achieve photo-peroxidase catalyst HRP/Zn-CN-ZIF.
View Article and Find Full Text PDFChembiochem
January 2024
Department of Microbial Biotechnology, Helmholtz Centre for Environmental Research - UFZ, Permoserstr. 15, 04318, Leipzig, Germany.
Phototrophic microorganisms, like cyanobacteria, are gaining attention as host organisms for biocatalytic processes with light as energy source and water as electron source. Redox enzymes, especially oxygenases, can profit from in-situ supply of co-substrates, i. e.
View Article and Find Full Text PDFACS Synth Biol
September 2023
Institute of Biochemical Engineering, Key Laboratory of Medical Molecule Science and Pharmaceutical Engineering, Ministry of Industry and Information Technology, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, China.
Efficient and cost-effective conversion of CO to biomass holds the potential to address the climate crisis. Light-driven CO conversion can be realized by combining inorganic semiconductors with enzymes or cells. However, designing enzyme cascades for converting CO to multicarbon compounds is challenging, and inorganic semiconductors often possess cytotoxicity.
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