The excitation energy transfer between β-Car and Chla molecules in PS Ⅱ core antenna complexes CP43 and CP47 |
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摘 要: |
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收稿时间: | 3 January 2000 |
修稿时间: | 8 April 2000 |
The excitation energy transfer between β-Car and Chla molecules in PS II core antenna complexes CP43 and CP47 |
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Authors: | Jixiu Shan Jushuo Wang Liangbi Li Nanming Zhao Tingyun Kuang |
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Institution: | (1) Laboratory of Photosynthesis Basic Research, Institute of Botany, Chinese Academy of Sciences, 100093 Beijing, China;(2) Department of Biological Sciences and Biotechnology, State Key Laboratory of Biomembrane and Membrane Biotechnology, Tsinghua University, 100084 Beijing, China |
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Abstract: | The excitation energy transfer efficiency between β-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 β-Car and Chla
molecules in CP43 and CP47 at normal conditions. The excitation energy transfer between β-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 β-Car and Chla molecules in CP43
and CP47. |
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Keywords: | CP43 CP47 β -Car Chla excitation energy transfer |
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