周りの温度で光合成する海藻で一貫して配線された光採集
Elisabetta Collini1, Cathy Y Wong, Krystyna E Wilk
1Department of Chemistry, Institute for Optical Sciences and Centre for Quantum Information and Quantum Control, University of Toronto, 80 St George Street, Toronto, Ontario, M5S 3H6 Canada.
Nature
|February 5, 2010
まとめ
海洋藻のアンテナタンパク質は,環境温度で量子相関性を示し,生物学的システムに関する以前の仮定に異議を唱える. この量子効果は,光合成における光採集効率を高めます.
科学分野:
- バイオフィジックス 生物物理学
- 光合成研究 研究 光合成研究
- 量子生物学とは,量子生物学である.
背景:
- 光合成は,アンテナタンパク質を利用して光エネルギーを捕捉し,バイオマスに変換します.
- アンテナタンパク質内の効率的なエネルギー転送は,光合成に不可欠です.
- 量子力学は,より高い温度でも,生物学的システム内のエネルギー転送に役割を果たす可能性があります.
研究 の 目的:
- 海洋クリプトファイト藻の光採集タンパク質における量子コヘランスの役割を調査する.
- 量子効果が生物学的に関連する温度で持続するかどうかを判断する.
主な方法:
- 二次元フォトンエコースペクトロスコーピーを用いた.
- 測定は,海洋暗号植物藻から隔離された光収集タンパク質で行われました.
主要な成果:
- 異常に長期にわたる興奮振動がタンパク質で観察されました.
- エネルギー転送における明確な相関と反相関が検出されました.
- 量子相関性は,環境温度で5nm幅のタンパク質全体で明らかでした.
結論:
- 海洋暗号植物藻の光合成タンパク質は,光を効率的に集めるために量子相関性を利用する.
- 電子刺激の量子相関的な共有は,生物学的に関連する条件下で発生します.
- この発見は,量子コヒーレンスが生物系における非常に低い温度に限られているという概念に異議を唱える.
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