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Anti-Correlation of the Emission from Different Red Pools in Photosystem I

机译：光系统I中不同红池发射的反相关

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Electron and energy transfer in proteins are key processes in bioenergetics. Their understanding on a molecular level can serve as an important guideline for the design of nanoscale assemblies. Energy transfer between pigment molecules requires a match between their transition energies for energy emission and absorption. The tuning of these pigment energies in proteins is achieved by pigment-protein interactions. In general, these interactions are regarded as static properties determined by the three-dimensional structure of pigment-protein complexes. Employing single-molecule fluorescence spectroscopy we demonstrate that protein dynamics, even at cryogenic temperatures, significantly influences the transition energy of pigments and, as a consequence, modulates energy transfer pathways. This variability of excitation energy transfer pathways introduced by protein dynamics might be important for the extreme robustness of photosystems.
机译：蛋白质中的电子和能量转移是生物能学中的关键过程。他们在分子水平上的理解可以作为纳米级组件设计的重要指南。颜料分子之间的能量转移需要它们的跃迁能之间的匹配才能进行能量的发射和吸收。蛋白质中这些色素能量的调节是通过色素-蛋白质相互作用实现的。通常，这些相互作用被认为是由颜料-蛋白质复合物的三维结构决定的静态性质。利用单分子荧光光谱，我们证明了即使在低温下，蛋白质动力学也显着影响颜料的跃迁能，并因此调节了能量传递途径。蛋白质动力学引入的激发能传递途径的这种可变性对于光系统的极端鲁棒性可能是重要的。

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