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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.

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A Light-Driven In Vitro Enzymatic Biosystem for the Synthesis of α-Farnesene from Methanol.

Biodes 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.

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Visible-light-driven photo-peroxidase catalysis: high-efficiency degradation of indole in water.

RSC 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.

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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.

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Light-Driven CO Reduction with a Surface-Displayed Enzyme Cascade-CN Hybrid.

ACS 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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