Ke B, Dolan E
Biochim Biophys Acta. 1980 May 9;590(3):401-6. doi: 10.1016/0005-2728(80)90210-8.
The decay time of flash-induced absorption changes in a Photosystem-II subchloroplast fragment is very temperature sensitive down to 210 K, below which it remains constant at 1.25 +/- 0.05 ms. The difference spectrum from the near-infra-red to the ultraviolet regions indicates that the monophasic decay represents charge recombination between P-680+ and the reduced primary acceptor. The charge recombination proceeds by electron tunneling. The P-680 concentration in the TSF-IIa fragment was estimated to be one in 30 +/- 5 total chlorophyll molecules.
在光系统II亚叶绿体片段中，闪光诱导的吸收变化的衰减时间在低至210K时对温度非常敏感，低于该温度时，它在1.25±0.05毫秒保持恒定。从近红外到紫外区域的差示光谱表明，单相衰减代表P-680+与还原的初级受体之间的电荷复合。电荷复合通过电子隧穿进行。TSF-IIa片段中P-680的浓度估计为每30±5个总叶绿素分子中有一个。
