Specific Interaction between Redox Phospholipid Polymers and Plastoquinone in Photosynthetic Electron Transport Chain

被引：8

作者：

Tanaka, Kenya ^{[1
]}

Kaneko, Masahiro ^{[2
]}

Ishikawa, Masahito ^{[3
,4
]}

Kato, Souichiro ^{[4
,5
]}

Ito, Hidehiro ^{[6
]}

Kamachi, Toshiaki ^{[7
]}

Kamiya, Kazuhide ^{[1
,4
]}

Nakanishi, Shuji ^{[1
,4
]}

机构：

[1] Osaka Univ, Grad Sch Engn Sci, Dept Chem, Toyonaka, Osaka 5608531, Japan

[2] Univ Tokyo, Dept Appl Chem, Bunkyo Ku, 7-3-1 Hongo, Tokyo 1138656, Japan

[3] Nagoya Univ, Grad Sch Engn, Dept Biotechnol, Chikusa Ku, Nagoya, Aichi 4648603, Japan

[4] Osaka Univ, Res Ctr Solar Energy Chem, 1-3 Machikaneyama, Toyonaka, Osaka 5608531, Japan

[5] Natl Inst Adv Ind Sci & Technol, Bioprod Res Inst, Tokyo, Japan

[6] Tokyo Inst Technol, Educ Acad Computat Life Sci, Meguro Ku, 2-12-1 Ookayama, Tokyo 1528550, Japan

[7] Tokyo Inst Technol, Grad Sch Biosci & Biotechnol, Dept Life Sci & Technol, Meguro Ku, 2-12-1 Ookayama, Tokyo 1528550, Japan

来源：

CHEMPHYSCHEM | 2017年 / 18卷 / 08期

基金：

日本科学技术振兴机构; 日本学术振兴会;

关键词：

circadian clocks; electrochemistry; extracellular electron transfer; photosynthesis; redox polymers; ELECTROCHEMICAL DETECTION; PHOTOCURRENT GENERATION; THYLAKOID MEMBRANES; CELLS; SYSTEMS;

D O I：

10.1002/cphc.201700065

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Redox phospholipid polymers added in culture media are known to be capable of extracting electrons from living photosynthetic cells across bacterial cell membranes with high cyto-compatibility. In the present study, we identify the intracellular redox species that transfers electrons to the polymers. The open-circuit electrochemical potential of an electrolyte containing the redox polymer and extracted thylakoid membranes shift to positive (or negative) under light irradiation, when an electron transport inhibitor specific to plastoquinone is added upstream (or downstream) in the photosynthetic electron transport chain. The same trend is also observed for a medium containing living photosynthetic cells of Synechococcus elongatus PCC7942. These results clearly indicate that the phospholipid redox polymers extract photosynthetic electrons mainly from plastoquinone.

引用

页码：878 / 881

页数：4

共 23 条

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[Anonymous], ANGEW CHEM

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