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| An Exciton Dynamics Model of Bryopsis corticulans Light-Harvesting Complex II | |
Nguyen, Hoang Long; Do, Thanh Nhut; Akhtar, Parveen3; Jansen, Thomas L. C.; Knoester, Jasper1; Wang, Wenda; Shen, Jian-Ren ; Lambrev, Petar H.; Tan, Howe-Siang
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| 2021 | |
| 发表期刊 | JOURNAL OF PHYSICAL CHEMISTRY B
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| ISSN | 1520-6106 |
| 卷号 | 125期号:4页码:1134-1143 |
| 摘要 | Bryopsis corticulans is a marine green macroalga adapted to the intertidal environment. It possesses siphonaxanthin-binding light-harvesting complexes of photosystem II (LHCII) with spectroscopic properties markedly different from the LHCII in plants. By applying a phenomenological fitting procedure to the two-dimensional electronic spectra of the LHCII from B. corticulans measured at 77 K, we can extract information about the excitonic states and energy-transfer processes. The fitting method results in well-converged parameters, including excitonic energy levels with their respective transition dipole moments, spectral widths, energy-transfer rates, and coupling properties. The 2D spectra simulated from the fitted parameters concur very well with the experimental data, showing the robustness of the fitting method. An excitonic energy-transfer scheme can be constructed from the fitting parameters. It shows the rapid energy transfer from chlorophylls (Chls) b to a at subpicosecond time scales and a long-lived state in the Chl b region at around 659 nm. Three weakly connected terminal states are resolved at 671, 675, and 677 nm. The lowest state is higher in energy than that in plant LHCII, which is probably because of the fewer number of Chls a in a B. corticulans LHCII monomer. Modeling based on existing Hamiltonians for the plant LHCII structure with two Chls a switched to Chls b suggests several possible Chl a-b replacements in comparison with those of plant LHCII. The adaptive changes result in a slower energy equilibration in the complex, revealed by the longer relaxation times of several exciton states compared to those of plant LHCII. The strength of our phenomenological fitting method for obtaining excitonic energy levels and energy-transfer network is put to the test in systems such as B. corticulans LHCII, where prior knowledge on exact assignment and spatial locations of pigments are lacking. |
| 学科领域 | Chemistry, Physical |
| DOI | 10.1021/acs.jpcb.0c10634 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS关键词 | ENERGY-TRANSFER ; LHCII COMPLEX ; FLOW |
| WOS研究方向 | Science Citation Index Expanded (SCI-EXPANDED) |
| WOS记录号 | WOS:000618525800013 |
| 出版者 | AMER CHEMICAL SOC |
| 文献子类 | Article |
| 出版地 | WASHINGTON |
| EISSN | 1520-5207 |
| 资助机构 | Singapore Ministry of Education Academic Research Fund [RG2/19, RG15/18] ; National Research, Development and Innovation Fund [NN-124904, 2018-1.2.1-NKP-2018-00009] ; Strategic Priority Research Program of China [XDB17030100] ; Key Research Project for Frontier Science from the Chinese Academy of Sciences (CAS), China [QYZDY-SSW-SMC003] ; CAS ; Hungary Academy of Sciences |
| 作者邮箱 | lambrev.petar@brc.hu ; howesiang@ntu.edu.sg |
| 作品OA属性 | Green Published |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.ibcas.ac.cn/handle/2S10CLM1/26305 |
| 专题 | 中科院光生物学重点实验室 |
| 作者单位 | 1.Nanyang Technol Univ, Sch Phys & Math Sci, Div Chem & Biol Chem, Singapore 637371, Singapore 2.Univ Groningen, Zernike Inst Adv Mat, NL-9747 AG Groningen, Netherlands 3.Akhtar, Parveen; Lambrev, Petar H.] Biol Res Ctr, H-6726 Szeged, Hungary 4.ELI HU Nonprofit Ltd, ELI ALPS, H-6728 Szeged, Hungary 5.Chinese Acad Sci, Photosynth Res Ctr, Inst Bot, Key Lab Photobiol, Beijing 100093, Peoples R China 6.Okayama Univ, Grad Sch Nat Sci & Technol, Res Inst Interdisciplinary Sci, Okayama 7008350, Japan |
| 推荐引用方式 GB/T 7714 | Nguyen, Hoang Long,Do, Thanh Nhut,Akhtar, Parveen,et al. An Exciton Dynamics Model of Bryopsis corticulans Light-Harvesting Complex II[J]. JOURNAL OF PHYSICAL CHEMISTRY B,2021,125(4):1134-1143. |
| APA | Nguyen, Hoang Long.,Do, Thanh Nhut.,Akhtar, Parveen.,Jansen, Thomas L. C..,Knoester, Jasper.,...&Tan, Howe-Siang.(2021).An Exciton Dynamics Model of Bryopsis corticulans Light-Harvesting Complex II.JOURNAL OF PHYSICAL CHEMISTRY B,125(4),1134-1143. |
| MLA | Nguyen, Hoang Long,et al."An Exciton Dynamics Model of Bryopsis corticulans Light-Harvesting Complex II".JOURNAL OF PHYSICAL CHEMISTRY B 125.4(2021):1134-1143. |
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