Ultrafast exciton energy transfer dynamics in the cryptophyte light-harvesting antenna phycoerythrin 566
文献类型：期刊论文
| 作者 | Guo, Na1; Liang, Zidong1; Guo, Xinyu1; Huang, Zhencheng1; Zhang, Lei1; Xie, Mingyuan1; Pu, Yang4,5; Li, Wenjun3; Chen, Min2; Qin, Song3 |
| 刊名 | FRONTIERS IN PLANT SCIENCE
 |
| 出版日期 | 2025-12-02 |
| 卷号 | 16页码:11 |
| 关键词 | photosynthesis cryptophytes phycoerythrin excitation energy transfer transientabsorption spectroscopy coherent modified Redfield theory |
| ISSN号 | 1664-462X |
| DOI | 10.3389/fpls.2025.1682154 |
| 通讯作者 | Xie, Mingyuan(xiemy5@mail.sysu.edu.cn) ; Pu, Yang(ypu@ldu.edu.cn) ; Zhao, Fuli(stszfl@mail.sysu.edu.cn) |
| 英文摘要 | Introduction Cryptophytes obtain energy through photosynthetic pigments and transfer it to the photosynthetic center on an ultrafast timescale. The mechanisms of such ultrafast excitation energy transfer (EET) in light-trapping complexes are a major focus of algal research. The closed-form phycoerythrin 566 (PE566) binds chemically distinct chromophores, exhibiting spectral properties that differ from those of other closed-form phycobiliproteins in cryptophytes. Elucidating the ultrafast energy transfer pathway of PE566 may provide a deeper understanding of the mechanisms involved in the initial stages of photosynthesis.Method We present a comprehensive description of the ultrafast energy transfer kinetics of PE566 under physiological conditions. A combined approach using ultrafast transient absorption (TA) spectroscopy and coherent modified Redfield theory (CMRT) was employed for theoretical modeling to investigate the ultrafast energy transfer between pigment molecules, including the exciton dynamics in PE566.Results and Discussion The results indicate that, in the PE566 dimer, the two phycoerythrobilins (PEBs) possess the highest excitation energies and act as the primary donors in the EET process. The two double-linked bilin584s serve as secondary energy transfer acceptors, exhibiting strong electronic coupling that leads to coherent delocalization of excited states. Two single-linked bilin584s and two bilin618s constitute the four lowest-energy exciton states. Ultimately, two efficient EET pathways were identified, with the lowest-energy bilin618s serving as the terminal acceptors for energy transfer in PE566. Our work clarifies the internal EET mechanism of Cryptophyta PE566, which may advance photophysical studies of phycobiliprotein systems. |
| WOS关键词 | QUANTUM COHERENCE ; REDFIELD ; PROTEIN ; ALGAE |
| WOS研究方向 | Plant Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:001639255800001 |
| 资助机构 | National Key Research and Development Program of China ; Natural Science Foundation of Shandong Province |
| 源URL | [http://ir.yic.ac.cn/handle/133337/41958]  |
| 专题 | 海岸带生物学与生物资源利用重点实验室 |
| 通讯作者 | Xie, Mingyuan; Pu, Yang; Zhao, Fuli |
| 作者单位 | 1.Sun Yat Sen Univ, Sch Phys, State Key Lab Optoelect Mat & Technol, Guangzhou, Peoples R China 2.Yantai Univ, Inst Life Sci, Yantai, Peoples R China 3.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai, Peoples R China 4.Ludong Univ, Bionanotechnol Res Inst, Yantai, Peoples R China 5.Ludong Univ, Sch Fisheries, Yantai, Peoples R China |
| 推荐引用方式 GB/T 7714 | Guo, Na,Liang, Zidong,Guo, Xinyu,et al. Ultrafast exciton energy transfer dynamics in the cryptophyte light-harvesting antenna phycoerythrin 566[J]. FRONTIERS IN PLANT SCIENCE,2025,16:11. |
| APA | Guo, Na.,Liang, Zidong.,Guo, Xinyu.,Huang, Zhencheng.,Zhang, Lei.,...&Zhao, Fuli.(2025).Ultrafast exciton energy transfer dynamics in the cryptophyte light-harvesting antenna phycoerythrin 566.FRONTIERS IN PLANT SCIENCE,16,11. |
| MLA | Guo, Na,et al."Ultrafast exciton energy transfer dynamics in the cryptophyte light-harvesting antenna phycoerythrin 566".FRONTIERS IN PLANT SCIENCE 16(2025):11. |
入库方式： OAI收割
来源：烟台海岸带研究所
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