| Effect of the mutation of carotenoids on the dynamics of energy transfer in light-harvesting complexes （LH2） from Rhodobacter sphaeroides 601 at room temperature |
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| 引用本文： | 刘伟民,刘 源,刘康俊,闫永丽,郭立俊,徐春和,钱士雄.Effect of the mutation of carotenoids on the dynamics of energy transfer in light-harvesting complexes （LH2） from Rhodobacter sphaeroides 601 at room temperature[J].中国物理 B,2006,15(8):1725-1730. |
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| 作者姓名： | 刘伟民 刘 源 刘康俊 闫永丽 郭立俊 徐春和 钱士雄 |
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| 作者单位： | (1)hysics Department, Henan University, Kaifeng 475001,China; (2)Physics Department, Fudan University, Shanghai 200433, China; (3)Shanghai Institute of Plant Physiology & Ecology, Shanghai institute for Biological Sciences,
Chinese Academy of Sciences, Shanghai 200032, China |
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| 基金项目： | Project supported by the National Natural Science Foundation of China (Grant No 10274013). |
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| 摘 要： | Energy transfers in two kinds of peripheral light-harvesting complexes (LH2) of
{Rhodobacter sphaeroides} (RS) 601 are studied by using femtosecond pump--probe
spectroscopy with tunable laser wavelength at room temperature. These two complexes
are native LH2 (RS601) and green carotenoid mutated LH2 (GM309). The obtained
results demonstrate that, compared with spheroidenes with ten conjugated double
bonds in native RS601, carotenoid in GM309 containing neurosporenes with nine
conjugated double bonds can lead to a reduction in energy transfer rate in the
B800-to-B850 band and the disturbance in the energy relaxation processes within the
excitonic B850 band.
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| 关 键 词： | 光复合物 类胡罗卜素突变 能量转移 飞秒泵探测头 |
| 收稿时间： | 1/7/2006 12:00:00 AM |
| 修稿时间： | 2006-01-072006-04-20 |
Effect of the mutation of carotenoids on the dynamics of energy transfer in light-harvesting complexes (LH2) from Rhodobacter sphaeroides 601 at room temperature |
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| Liu Wei-Min,Liu Yuan,Liu Kang-Jun,Yan Yong-Li,Guo Li-Jun,Xu Chun-He and Qian Shi-Xiong.Effect of the mutation of carotenoids on the dynamics of energy transfer in light-harvesting complexes (LH2) from Rhodobacter sphaeroides 601 at room temperature[J].Chinese Physics B,2006,15(8):1725-1730. |
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| Authors: | Liu Wei-Min Liu Yuan Liu Kang-Jun Yan Yong-Li Guo Li-Jun Xu Chun-He and Qian Shi-Xiong |
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| Affiliation: | Physics Department, Fudan University, Shanghai 200433, China; Shanghai Institute of Plant Physiology & Ecology, Shanghai institute for Biological Sciences, Chinese Academy of Sciences, Shanghai 200032, China; Physics Department, Henan University, Kaifeng 475001, China |
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| Abstract: | Energy transfers in two kinds of peripheral light-harvesting complexes (LH2) of
{Rhodobacter sphaeroides} (RS) 601 are studied by using femtosecond pump--probe
spectroscopy with tunable laser wavelength at room temperature. These two complexes
are native LH2 (RS601) and green carotenoid mutated LH2 (GM309). The obtained
results demonstrate that, compared with spheroidenes with ten conjugated double
bonds in native RS601, carotenoid in GM309 containing neurosporenes with nine
conjugated double bonds can lead to a reduction in energy transfer rate in the
B800-to-B850 band and the disturbance in the energy relaxation processes within the
excitonic B850 band. |
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| Keywords: | light harvesting complex (LH2) carotenoid mutation energy transfer femtosecond pumpprobe |
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