Architecture and mechanism of the light-harvesting apparatus of purple bacteria
Architecture and mechanism of the light-harvesting apparatus of purple bacteria
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DOI：
10.1073/pnas.95.11.5935
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发表时间：
1998-05-26
影响因子：
11.1
通讯作者：
Schulten, K
中科院分区：
文献类型：
--
作者：
Hu, XC;Damjanovic, A;Schulten, K
光合生物以光能为其新陈代谢提供燃料，并为此目的开发了一种有效的收集阳光的装置。仪器的原子结构，随着它在紫色细菌中进化，已经通过x射线晶体学，电子显微镜和模型的组合构建。详细的结构和整体结构揭示了颜料的分层聚集体，通过飞秒光谱和量子物理显示，它利用了优雅而有效的机制来吸收初级光，并将电子激发转移到光合反应中心。
Photosynthetic organisms fuel their metabolism with light energy and have developed for this purpose an efficient apparatus for harvesting sunlight. The atomic structure of the apparatus, as it evolved in purple bacteria, has been constructed through a combination of x-ray crystallography, electron microscopy, and modeling. The detailed structure and overall architecture reveals a hierarchical aggregate of pigments that utilizes, as shown through femtosecond spectroscopy and quantum physics, elegant and efficient mechanisms for primary light absorption and transfer of electronic excitation toward the photosynthetic reaction center.