酸素発生光化学系IIの構造と機能に関する結晶学的研究

  • 梅名 泰史
    大阪市立大学複合先端研究機構/科学技術振興機構さきがけ

書誌事項

タイトル別名
  • Crystal Structural and Functional Analysis of Oxygen-Evolving Photosystem II Complex
  • ガッカイショウ ジュショウ ロンブン サンソ ハッセイ コウカガクケイ Ⅱ ノ コウゾウ ト キノウ ニ カンスル ケッショウガクテキ ケンキュウ

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説明

Photosystem II (PSII) is a multi-subunit membrane protein complex. PSII performs a series of light-induced electron transfer reactions leading to the splitting of water and generation of molecular oxygen, the latter of which is essential for almost all life on the earth. The catalytic center is a Mn4CaO5-cluster, whose detailed structure has been successfully resolved in the 1.9 Å structure of PSII from Thermosynechococcus vulcanus. This structure also revealed the presence of nearly 2,800 water molecules, some of which are directly associated with the Mn4CaO5-cluster and thus may serve as the substrate water molecules for the oxygen-evolving reaction.

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