%0 Journal Article %T The excitation energy transfer between ¦Â-Car and Chla molecules in PS II core antenna complexes CP43 and CP47 %A Jixiu Shan %A Jushuo Wang %A Liangbi Li %A Nanming Zhao %A Tingyun Kuang %J Chinese Science Bulletin %@ 1861-9541 %D 2000 %I %R 10.1007/BF02886216 %X The excitation energy transfer efficiency between ¦Â-Car and Chla molecules in purified CP43 and CP47 was calculated by comparing absorption and fluorescence excitation after normalization at 550 nm, CP43 had an energy transfer efficiency of 29.1% while the CP47 had an energy transfer efficiency of 62.8%, proving that excitation energy was transferred between ¦Â-Car and Chla molecules in CP43 and CP47 at normal conditions. The excitation energy transfer between ¦Â-Car and Chla molecules in CP43 and CP47 may occur through the ¡°Dexter¡± mechanism and the distance between these two kinds of pigments should be less than 1 nm. In addition, the results were also used to discuss the conformational relationship between ¦Â-Car and Chla molecules in CP43 and CP47. %K CP43 %K CP47 %K ¦Â-Car %K Chla %K excitation energy transfer %U http://link.springer.com/article/10.1007/BF02886216