叶绿素衍生物的合成及其对紫细菌原初光化学特性的影响研究  

The Synthesis of Chlorophyll Derivatives and Their Photosynthetic Activities in Purple Bacteria Reaction Centers

作　　者：陈志龙[1] 陈静蓉[1] 邹永龙[2] 吴毓林[3] 曾小华[2] 徐春和[2] 

机构地区：[1]第二军医大学海军医学系 [2]中国科学院上海生命科学研究院植物生理生态研究所 [3]中国科学院上海有机化学研究所

出　　处：《化学学报》2001年第8期1310-1316,共7页Acta Chimica Sinica

基　　金：国家自然科学基金，国家重点基础研究发展计划(973计划)

摘　　要：对10个叶绿素衍生物的合成方法进行了研究.在一定的温度(43.5℃)和丙酮的协同作用下,植物脱镁叶绿素a可置换紫细菌RS601光合反应中心的细菌脱镁叶绿素,光化学活性为对照的71.4%,光化学活性的下降与替代色素的变化无对应关系,替代后降低了Bphe-/Bphe和Q-A/QA电对之间的电子传递速率.chlorophyll derivatives were synthesized and five of them were reported for the first time. In the presence of acetone and an excess of exogenous plant pheophytins, bacteriopheophytins in the reaction centers from Phodobacter sphaeroides RS601 were replaced by the pheophytins at sites H-A and H-B. When incubated at 43.5 degreesC for 60 min, the photochemical activities of the pheophytin reaction centers are 71.4% of the control. The electron transfer rate of Bphe(-)/Bphe(phe(-)/phe) and Q ((A)) over bar /Q(A) was decreased.

关 键 词：叶绿素衍生物 合成 紫细菌 光合作用 原初光化学反应 光化学活性 光合反应中心 

分 类 号：Q935[生物学—微生物学]