Artificial photosynthetic cells with biotic–abiotic hybrid energy modules for customized CO2 conversion

Feng Gao, Guangyu Liu, Aobo Chen, Yangguang Hu, Huihui Wang, Jiangyuan Pan, Jinglei Feng, Hongwei Zhang, Yujie Wang, Yuanzeng Min, Chao Gao () and Yujie Xiong ()
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Feng Gao: University of Science and Technology of China
Guangyu Liu: University of Science and Technology of China
Aobo Chen: University of Science and Technology of China
Yangguang Hu: University of Science and Technology of China
Huihui Wang: University of Science and Technology of China
Jiangyuan Pan: University of Science and Technology of China
Jinglei Feng: University of Science and Technology of China
Hongwei Zhang: University of Science and Technology of China
Yujie Wang: University of Science and Technology of China
Yuanzeng Min: University of Science and Technology of China
Chao Gao: University of Science and Technology of China
Yujie Xiong: University of Science and Technology of China

Nature Communications, 2023, vol. 14, issue 1, 1-13

Abstract: Abstract Programmable artificial photosynthetic cell is the ultimate goal for mimicking natural photosynthesis, offering tunable product selectivity via reductase selection toward device integration. However, this concept is limited by the capacity of regenerating the multiple cofactors that hold the key to various reductases. Here, we report the design of artificial photosynthetic cells using biotic–abiotic thylakoid–CdTe as hybrid energy modules. The rational integration of thylakoid with CdTe quantum dots substantially enhances the regeneration of bioactive NADPH, NADH and ATP cofactors without external supplements by promoting proton-coupled electron transfer. Particularly, this approach turns thylakoid highly active for NADH regeneration, providing a more versatile platform for programming artificial photosynthetic cells. Such artificial photosynthetic cells can be programmed by coupling with diverse reductases, such as formate dehydrogenase and remodeled nitrogenase for highly selective production of formate or methane, respectively. This work opens an avenue for customizing artificial photosynthetic cells toward multifarious demands for CO2 conversion.

Date: 2023
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DOI: 10.1038/s41467-023-42591-x

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