期刊
ACS NANO
卷 10, 期 1, 页码 556-561出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsnano.5b05579
关键词
photosystem II; ATP synthase; photosynthesis; biomimetic synthesis; coassembly
类别
资金
- National Basic Research Program of China (973 program) [2013CB932802]
- National Natural Science Foundation of China [21433010, 21320102004, 21321063, 21303221, 21573248]
- National key foundation for exploring scientific instrument [2013YQ16055108]
Adenosine triphosphate (ATP) is one of the most important energy sources in living cells, which can drive serial key biochemical processes. However, generation of a proton gradient for ATP production in an artificial way poses a great challenge. In nature, photophosphorylation occurring in chloroplasts is an ideal prototype of ATP production. In this paper we imitate the light-to ATP conversion process occurring in the thylakoid membrane by construction of RA-ATPase proteoliposome-coated PSII-based microspheres with well-defined core@shell structures using molecular assembly. Under light illumination, PSII can split water into protons, oxygen, and electrons and can generate a proton gradient for ATPase to produce ATP. Thus, an artificially designed chloroplast for PSII-driven ATP synthesis is realized. This biomimetic system will help to understand the photophosphorylation process and may facilitate the development of ATP-driven devices by remote light control.
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