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Energy Transfer from Cyanobacterial Phycocyanins to Chlorophyll a-containing Liposomes

YU Guo-Qiang;ZHANG Hui; RONG Shou-Yu(College of Life Sciences, Peking University, Beijing 100871)  
The phycocycins (PC) from the thermophilic cyanobacterium Myxosarcina concinna Printz and theChl a-containing liposomes were prepared and their spectral characteristics were measured before the energytransfer from PC to Chl a-containing liposomes was studied. It was found that the efficiency of light enernytransfer was decreased then the surface of the vesicle bilayer was negatively charged. It was relativelyincreased when the membrane was incorporated with the positively-charged surfactant, dioctadecy-ldimethylam monium chloride (DODAC), of increasing concentration fon 0 tO 30 mol%. These results indicated that theelectrostatic force might have great effects on the energy transfer from phycocycins to Chl a-containing liposomes.
【Fund】: 国家自然科学基金
【CateGory Index】: Q945
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