2012 Fiscal Year Final Research Report
Analytical Chemical Study on the Mechanism of Photosynthetic Oxygen Evolution
| Project/Area Number |
22550146
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Chemistry related to living body
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| Research Institution | Tokyo University of Science (2012)
The University of Tokyo (2010-2011) |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
KATO Yuki 名古屋大学, 理学研究科, 助教 (10376634)
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| Project Period (FY) |
2010 – 2012
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| Keywords | 光合成 / 水分解 / 酸素発生 / 反応中心 / 酸化還元電位 |
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| Research Abstract |
To elucidate the energetics driving water oxidation by Photosystem II, in which redox properties of cofactors were obscure because of insufficient measurement technique, redox potentials of two key cofactors, the primary electron acceptor Pheophytin aand the primary quinone QA, were determined by spectroelectrochemistry using an optically-transparent thin-layer electrode cell. On the basis of the results of site-directed mutants and ion-exchanged PSII preparations, the redox potential of the primary electron donor P680, which is the source power for the water oxidation, and relationship between the oxygen-evolution activity and the cofactors' redox properties were elucidated.
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[Presentation] A. Boussac, " Influences of modifications at the electron donor side on the redox properties of the acceptor side in photosystem II as revealed by spectroelectrochemistry2012
Author(s)
Y. K a to, T. Shibamoto, S. Yamamoto, T. Watanabe, N. Ishida, M. Sugiura, F. Rappaport
Organizer
Gordon Research Conferences -2011 Photosynthesis
Place of Presentation
Davidson College, Davidson, NC, USA
Year and Date
2012-06-09
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