Coassembly of Photosystem II and ATPase as Artificial Chloroplast for Light-Driven ATP Synthesis

Abstract

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 FoF1-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.

Chlorophyll‐Based Organic–Inorganic Heterojunction Solar Cells

“…[4][5][6][7][8] Chlorophylls (Chls), which are the most abundant natural pigments, play key roles in early photophysical and -chemical events in naturalp hotosynthesis. [9] In the last decade, we have carried out as eries of investigationst oe xplore the possibility of employing Chls and their derivatives in emerging photovoltaic techniques, such as biomimetic systems, [10][11][12][13] DSSCs, [14][15][16][17][18][19][20][21][22][23][24][25][26][27] organic solar cells (OSCs), [28][29][30][31] and perovskite solar cells (PSCs). [32] These investigations are purely based on the fact that Chls are the only naturallyo ccurringo rganic semiconductors that possess the merits of large-scale resources,p ollution free, and optoelectrical variability.…”

Lipid Sponge Droplets as Programmable Synthetic Organelles

“…Lipid bilayers serve as the necessary matrix for the proper folding and function of transmembrane proteins, can scaffold protein signaling complexes, and provide an interface for sequestering molecules and proteins from the environment. As such, lamellar lipid membrane-bound vesicles have been extensively utilized as experimental model systems to emulate the plasma membrane (13) as well as that of organelles like chloroplasts (14,15) and nuclei (16).…”

A Z‐Scheme‐Inspired Photobioelectrochemical H2O/O2 Cell with a 1 V Open‐Circuit Voltage Combining Photosystem II and PbS Quantum Dots

“…[1][2][3] Many efforts have been dedicated to understand the high oxidation efficiency of PSII for the design of artificial wateroxidizing photocatalysts [4] and also to make use of the photobiocatalyst itself as core component in functional light-driven biomimetic systems. [5,6] Recently,much attention has been devoted to the integration of isolated photosynthetic complexes into electrode arrangements for the construction of sensors [7] and solar-to-chemical [8][9][10] and solar-to-energy converting systems [11][12][13][14] and for the mechanistic analysis of photosynthetic processes. [15] Although several strategies for establishing electrical communication with PSII have been reported, the efficient wiring to electrodes remains challenging.…”