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系统。我们使用的是生物材料，没有构建人工系统。我们得到了以下四个主要结果。(1)我们分析了能量转移过程中，一个新发现的蓝藻Acaryochloris marina是已知的含有叶绿素d。触角叶绿素a的能量水平低于能量陷阱，但在该生物体内存在能量传递的上坡过程，提示了触角系统的一个新概念。我们还发现了一个含有叶绿素d的新物种，这导致了红藻中叶绿素d存在的最终结论。(2)证明了新发现的含Zn-BChl a光合细菌红色嗜酸菌（Acidiphilium rubrum）中的特殊对的空间取向不同于紫色细菌中的特殊对。Zn-BChl a之间的弱相互作用表明反应动力学的修改。(3)我们对蓝藻的触角蛋白，即藻胆蛋白进行了简正模分析，并得出结论，蛋白质结构对于稳定参与连续反应系统的发色团的电子状态是必不可少的。(4)我们分析了类胡萝卜素的激发弛豫过程，发现S2态的非常快的振动弛豫是天线功能所必需的。

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.