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- 沈 建仁
- 岡山大学異分野基礎科学研究所
書誌事項
- タイトル別名
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- Mechanism of Light-Induced Water-Oxidation/Oxygen Evolution Catalyzed by Photosystem II in Photosynthesis
- Award Account 光合成光化学系Ⅱにおける水分解・酸素発生の反応メカニズム
- Award Account コウゴウセイ コウカガクケイ Ⅱ ニ オケル ミズブンカイ ・ サンソ ハッセイ ノ ハンノウ メカニズム
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抄録
<p>Photosystem II (PSII) is a huge membrane-protein complex catalyzing light-induced electron transfer and water oxidation reactions, leading to the conversion of light energy into chemical energy and the evolution of molecular oxygen, two products indispensable for sustaining almost all life forms on the earth. This account describes the structure of PSII with the focus on that of the catalytic center for water oxidation, a Mn4CaO5-cluster embedded in the protein matrix of PSII, revealed by conventional highresolution X-ray crystallography and femtosecond X-ray free electron laser (XFEL) crystallography. Latest results on the structural changes of the Mn4CaO5-cluster during the water oxidation reaction cycle obtained by the femtosecond XFEL crystallography are also described. Based on these results as well as those obtained with other approaches, the mechanism of water oxidation and oxygen evolution is discussed. Other functions of PSII such as proton release pathways and light energy absorption and transfer are also discussed briefly.</p>
収録刊行物
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- Bulletin of Japan Society of Coordination Chemistry
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Bulletin of Japan Society of Coordination Chemistry 72 (0), 3-14, 2018-11-30
錯体化学会