Ultrafast energy transfer pathways in R-phycoerythrin from Polysiphonia urceolata
文献类型：期刊论文
| 作者 | Chen, HL ; Dang, W ; Xie, J ; Zhao, JQ ; Weng, YX |
| 刊名 | PHOTOSYNTHESIS RESEARCH
 |
| 出版日期 | 2012 |
| 卷号 | 111期号:1-2页码:81 |
| 关键词 | RESOLVED FLUORESCENCE-SPECTRA C-PHYCOCYANIN TRIMERS ALLOPHYCOCYANIN TRIMERS ISOLATED PHYCOBILIPROTEINS MASTIGOCLADUS-LAMINOSUS ANGSTROM RESOLUTION CRYSTAL-STRUCTURE RATE CONSTANTS STATE CHROMOPHORES |
| ISSN号 | 0166-8595 |
| 通讯作者 | Weng, YX (reprint author), Chinese Acad Sci, Inst Phys, Lab Soft Matter Phys, Beijing 100190, Peoples R China. |
| 中文摘要 | Energy transfer (ET) processes between chromophores in R-phycoerythrin (R-PE) from Polysiphonia urceolata were studied by use of ultrafast spectroscopic methods. Several primary ET pathways were elaborated. A fluorescence decay component with a time constant of several hundred picoseconds observed by streak camera is tentatively assigned to the reversible formation of exciton traps between alpha 84 and beta 84 pigment pairs. In order to investigate much faster ET processes in R-PE, a noncollinear optical parametric amplifier based femtosecond time-resolved transient fluorescence spectrometer was employed. The results reveal that the ET between alpha 84 and beta 84 pigment pair has a time constant of 1-2 ps; the energy migration between alpha 84 and beta 84 pairs within the R-PE trimer has a time constant of 30-40 ps. We also demonstrated an ET process from phycourobilin to phycoerythrobilin with a time constant as fast as 2.5-3.0 ps, which was directly observed in fluorescence kinetics by selective excitation of the phycourobilin molecules acting as the energy donor. |
| 收录类别 | SCI |
| 资助信息 | Natural Science Foundation of China (NSFC) [20925313, 60438020]; National Basic Research Program of China [2009CB929404]; Chinese Academy of Sciences [KJCX2-YW-W25] |
| 语种 | 英语 |
| 公开日期 | 2013-09-23 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/46312]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Chen, HL,Dang, W,Xie, J,et al. Ultrafast energy transfer pathways in R-phycoerythrin from Polysiphonia urceolata[J]. PHOTOSYNTHESIS RESEARCH,2012,111(1-2):81. |
| APA | Chen, HL,Dang, W,Xie, J,Zhao, JQ,&Weng, YX.(2012).Ultrafast energy transfer pathways in R-phycoerythrin from Polysiphonia urceolata.PHOTOSYNTHESIS RESEARCH,111(1-2),81. |
| MLA | Chen, HL,et al."Ultrafast energy transfer pathways in R-phycoerythrin from Polysiphonia urceolata".PHOTOSYNTHESIS RESEARCH 111.1-2(2012):81. |
入库方式： OAI收割
来源：物理研究所
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