Biochemical studies on the quantum mechanical successive reaction system in organized molecular assemblies in biological materials.

分析了光合作用初级过程中的连续反应体系。我们使用的是生物材料，并没有构建人工系统。我们取得了以下四个主要成果。(1)我们分析了一种新发现的含有Chl d的蓝藻Acaryochloris marina的能量传递过程。天线Chl a的能量水平低于能量陷阱，但在该生物中证明了上坡能量传递过程的功能，这表明了天线系统的新概念。我们还发现了一个含有Chl - d的新物种，这就得出了Chl - d存在于红藻中的最终结论。(2)我们证明了新发现的含Zn-BChl a的红嗜酸菌中特殊对的空间取向与紫色细菌中的不同。Zn-BChl - A之间的弱相互作用表明了反应动力学的改变。(3)我们对蓝藻细菌的天线蛋白即藻胆蛋白进行了正态分析，得出该蛋白结构对参与连续反应体系的发色团的电子状态的稳定至关重要。(4)分析了类胡萝卜素在藻类中作为高效天线的激发弛豫过程，发现S2态的快速振动弛豫对天线功能至关重要。

The successive reaction system in the primary processes of photosynthesis was analyzed. We used biological materials, and did not construct the artificial system. We obtained the following four major results.(1) We analyzed the energy transfer process in a newly found cyanobacterium Acaryochloris marina that is known to contain Chl d. The energy level of antenna Chl a is lower than the energy trap, however the up-hill energy transfer process was proved to function in this organism, indicating a new concept in the antenna system. We also found a new species that contains Chl d, and this leads to the final conclusion on the presence of Chl d in red algae.(2) We proved that the spatial orientation of the special pair in the newly found Zn-BChl a containing photosynthetic bacterium Acidiphilium rubrum was different from that in the purple bacteria. A weak interaction between Zn-BChl a's suggested the modification in the reaction kinetics.(3) we applied the normal mode analysis to the antenna protein of cyanobacteria, that is, phycobiliproteins, and concluded that the protein structure is essential for stabilizing the electronic state of chromophores that engages in the successive reaction system.(4) We analyzed the excitation relaxation processes of carotenoids that function as an efficient antenna in algae, and found that very fast vibrational relaxationin the S2 state is essential for the antenna function.