细菌中的光捕获利用了运输和捕获动力学之间的关键相互作用
Light-harvesting in bacteria exploits a critical interplay between transport and trapping dynamics
摘要：
最近发现，捕光细菌Rhodocellum Photometricum根据光照条件采用了惊人不同的结构。我们提出了分析和数值计算，解释这一观察，通过量化的激发转移动力学和反应中心循环之间的动态相互作用。高光强度膜（HLIM）利用耗散作为光保护机制，从而保障化学能的稳定供应，而低光强度膜（LLIM）通过将其引导到开放的反应中心来有效地处理未使用的光照强度。更一般地说，我们的分析阐明和量化的权衡自然网络设计的太阳能转换。
英文摘要：
Light-harvesting bacteria Rhodospirillum Photometricum were recently found to adopt strikingly different architectures depending on illumination conditions. We present analytic and numerical calculations which explain this observation by quantifying a dynamical interplay between excitation transfer kinetics and reaction center cycling. High light-intensity membranes (HLIM) exploit dissipation as a photo-protective mechanism, thereby safeguarding a steady supply of chemical energy, while low light-intensity membranes (LLIM) efficiently process unused illumination intensity by channelling it to open reaction centers. More generally, our analysis elucidates and quantifies the trade-offs in natural network design for solar energy conversion.
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