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Photoactive Conjugated Polymer‐Based Hybrid Biosystems for Enhancing Cyanobacterial Photosynthesis and Regulating Redox State of Protein
Advanced Functional Materials ( IF 19.0 ) Pub Date : 2020-11-20 , DOI: 10.1002/adfm.202007814
Yue Zeng 1, 2 , Xin Zhou 1 , Ruilian Qi 1 , Nan Dai 1, 2 , Xuancheng Fu 1, 2 , Hao Zhao 1, 2 , Ke Peng 1, 2 , Haitao Yuan 1 , Yiming Huang 1, 2 , Fengting Lv 1, 2 , Libing Liu 1, 2 , Shu Wang 1, 2
Affiliation  

Constructing artificial hybrid biosystems, comprising of organisms and organic non‐biological functional material, will afford promising opportunities to achieve brand new or enhanced functions. In this work, a hybrid biosystem is designed and constructed by electrostatically recombining photoactive cationic poly(fluorene‐co‐phenylene) derivative (PFP) with a cyanobacterium (Synechococcus sp. PCC7942, Syne) for enhancing its photosynthesis and regulating exogenous redox state of protein. The light utility efficiency of Syne is significantly improved assisted by the excellent ultraviolet light‐harvesting ability of PFP, which accelerates electron‐transfer rate in non‐cyclic electron transport chain, and further augments the light‐dependent reaction in photosynthesis. As a result, O2, NADPH, and ATP production in the light‐dependent reaction are increased by 52.8%, 47.9%, and 27.2%, respectively. Moreover, the extracellular electron transfer property of Syne is able to realize electronic communication with external circumstances. Specifically, the electrons exported from Syne can reduce exogenous oxidized cytochrome c (Cyt c) and adsorbed PFP has the ability to regulate the reduction degree of Syne to Cyt c. This work reports an ideal design of a conjugated polymer‐based hybrid biosystem, providing a strategy to promote photosynthesis and regulate the redox state of protein.

中文翻译:

基于光活性共轭聚合物的杂合生物系统,可增强蓝细菌的光合作用并调节蛋白质的氧化还原状态

构建由生物和有机非生物功能材料组成的人工杂交生物系统,将为实现全新的或增强的功能提供广阔的机遇。在这项工作中,通过将光活性阳离子聚(芴-共-亚苯基)衍生物(PFP)与蓝细菌(Synechococcus sp。PCC7942,Syne)进行静电重组,设计并构建了一个混合生物系统,以增强其光合作用并调节蛋白质的外源氧化还原状态。 。Syne的光效PFP具有出色的紫外线捕集能力,可显着改善这种吸收能力,它可以加快非循环电子传输链中的电子转移速率,并进一步增强光合作用中的光依赖性反应。结果,光依赖性反应中的O 2,NADPH和ATP产量分别增加了52.8%,47.9%和27.2%。此外,Syne的细胞外电子转移特性能够实现与外界环境的电子通信。具体来说,从Syne输出的电子可以还原外源性氧化细胞色素c(Cyt c),而吸附的PFP具有调节Syne还原度的能力。到Cyt c。这项工作报告了基于共轭聚合物的混合生物系统的理想设计,提供了促进光合作用和调节蛋白质氧化还原状态的策略。
更新日期:2020-11-20
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