Antenna structure and energy transfer in higher plant photosystems
Antenna structure and energy transfer in higher plant photosystems
复制标题
高等植物光系统中的天线结构和能量传递
DOI：
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发表时间：
1996
期刊：
影响因子：
--
通讯作者：
G. Zucchelli
中科院分区：
文献类型：
--
作者：
R. Jennings;R. Bassi;G. Zucchelli
高等植物光系统的光收集天线含有大量的叶绿素和类胡萝卜素色素，这些色素与许多不同的多肽结合。吸收的光能以高效率从天线转移到发生初级光化学的反应中心。在这篇综述中，对这些色素蛋白的生化特性进行了详细的研究，并提出了光系统II的拓扑结构模型。从均匀和非均匀展宽不同程度谱型之间的偶极子耦合角度讨论了叶绿素之间的能量传递。计算值与实测值的两两传递速率基本一致，约为1ps。从偶极子和交换偶联两方面讨论了叶绿素和类胡萝卜素之间的能量传递。光谱形式的能量漏斗组织似乎对高等植物光系统并不重要。预计激发态光谱平衡比天线-反应中心平衡要快得多。用阱和扩散限制模型讨论激子动力学。在光系统II中，缓慢的反应中心捕获和缺乏强大的能量“漏斗”可能对激发态水平的下调起到重要作用，从而防止光抑制。
The light harvesting antenna of higher plant photosystems contains a large number of chlorophyll and carotenoid pigments which are bound to a number of different polypeptides. Absorbed light energy is transferred with high efficiency from the antenna to reaction centres where primary photochemistry occurs. In this review, a detailed examination of the biochemical characteristics of these pigment-proteins is undertaken and a topological structural model for photosystem II is presented. Energy transfer between chlorophylls is discussed in terms of dipole coupling between spectral forms which are homogeneously and inhomogeneously broadened to different extents. Reasonable agreement is found between calculated and measured pairwise transfer rates which are in the order of 1 ps. Energy transfer between chlorophylls and carotenoids is discussed in terms of both dipole and exchange coupling. The energy funnel organisation of spectral forms seems not to be important for higher plant photosystems. Excited state spectral equilibration is expected to be considerably faster than antenna-reaction centre equilibration. Exciton dynamics are discussed in terms of trap and diffusion limited models. Slow reaction centre trapping and the absence of strong energy “funnelling” in photosystem II may be important for the down regulation of excited state levels which protects against photoinhibition.
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DOI：
10.1073/pnas.84.24.8844
发表时间：
1987-12-01
影响因子：
11.1
作者：
HOFFMAN, NE;PICHERSKY, E;CASHMORE, AR
通讯作者：
CASHMORE, AR
PSI 核心天线中能量传输的温度依赖性的仿真。
影响因子：
3.4
作者：
Jia,Y;Jean,JM;Werst,MM;Chan,CK;Fleming,GR
通讯作者：
Fleming,GR
碳单氧肌红蛋白的光谱带不均匀展宽。
影响因子：
3.4
作者：
Ormos,P;Ansari,A;Braunstein,D;Cowen,BR;Frauenfelder,H;Hong,MK;Iben,IE;Sauke,TB;Steinbach,PJ;Young,RD
通讯作者：
Young,RD
使用单特异性抗体鉴定 1 型和 2 型光捕获叶绿素 a/b 结合蛋白。
DOI：
10.1016/s0005-2728(05)80336-6
发表时间：
1992
期刊：
Biochimica et biophysica acta
影响因子：
--
作者：
Sigrist,M;Staehelin,LA
通讯作者：
Staehelin,LA