Department of Biology, University of California at San Diego, La Jolla, California 92093.
Proc Natl Acad Sci U S A. 1980 Aug;77(8):4697-701. doi: 10.1073/pnas.77.8.4697.
A model of the photochemical apparatus of photosynthesis, presented previously in a tripartite format, is used in a bipartite format to analyze energy transfer between photosystem II units. The model is used to develop analytical expressions for the photochemical properties of chloroplasts that include a term for the probability for energy transfer between photosystem II units. In particular, a normalized plot of the fluorescence of variable yield as a function of the closure of photosystem II reaction centers permits the evaluation of the energy transfer parameter. Data from a study by Melis [Melis, A. (1978) FEBS Lett. 95, 202-206] are used to estimate that the probability for energy transfer between photosystem II units in the alpha component of photosystem II was approximately 0.57 when the photosystem II reaction centers were all open and 0.83 when the centers were closed. This connected package model appears to provide a better description of the system than the matrix model that was used previously.
先前以三分体格式呈现的光合作用光化学仪器模型,现在以二分体格式用于分析光合作用系统 II 单元之间的能量转移。该模型用于开发包含光合作用系统 II 单元之间能量转移概率项的叶绿体光化学性质的分析表达式。特别是,可变产量荧光的归一化图作为光合作用系统 II 反应中心关闭的函数,可以评估能量转移参数。Melis 的研究数据[Melis, A. (1978) FEBS Lett. 95, 202-206]用于估计当光合作用系统 II 反应中心全部打开时,光合作用系统 II 的 alpha 组分中光合作用系统 II 单元之间的能量转移概率约为 0.57,当中心关闭时约为 0.83。这个连接的包模型似乎比以前使用的矩阵模型提供了对系统更好的描述。