Institut für Theoretische Physik, Johannes Kepler Universität, Abteilung Theoretische Biophysik, Austria.
J Photochem Photobiol B. 2011 Jul-Aug;104(1-2):126-41. doi: 10.1016/j.jphotobiol.2011.03.016. Epub 2011 Apr 7.
In this review we discuss structure-function relationships of the core complex of photosystem II, as uncovered from analysis of optical spectra of the complex and its subunits. Based on descriptions of optical difference spectra including site directed mutagenesis we propose a revision of the multimer model of the symmetrically arranged reaction center pigments, described by an asymmetric exciton Hamiltonian. Evidence is provided for the location of the triplet state, the identity of the primary electron donor, the localization of the cation and the secondary electron transfer pathway in the reaction center. We also discuss the stationary and time-dependent optical properties of the CP43 and CP47 subunits and the excitation energy transfer and trapping-by-charge-transfer kinetics in the core complex.
在这篇综述中，我们讨论了光合系统 II 核心复合物的结构-功能关系，这是通过分析该复合物及其亚基的光光谱得出的。基于对包括定点突变在内的光差光谱的描述，我们提出了一种对称排列的反应中心色素的多聚体模型的修正，该模型由非对称激子哈密顿量描述。为三重态的位置、初级电子供体的身份、反应中心中阳离子的定位和二次电子转移途径提供了证据。我们还讨论了 CP43 和 CP47 亚基的稳态和瞬态光学性质，以及核心复合物中的激发能量转移和电荷转移动力学的俘获。
