Akhtar, Parveen and Feng, Yue and Jana, Sanjib and Wang, Wenda and Shen, Jian-Ren and Tan, Howe-Siang and Lambrev, Petar H. (2024) Ultrafast Energy Transfer in a Diatom Photosystem II Supercomplex. JOURNAL OF PHYSICAL CHEMISTRY LETTERS, 15 (22). pp. 5838-5847. ISSN 1948-7185
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Abstract
The light-harvesting complexes (LHCs) of diatoms, specifically fucoxanthin-Chl a/c binding proteins (FCPs), exhibit structural and functional diversity, as highlighted by recent structural studies of photosystem II-FCP (PSII-FCPII) supercomplexes from different diatom species. The excitation dynamics of PSII-FCPII supercomplexes isolated from the diatom Thalassiosira pseudonana was explored using time-resolved fluorescence spectroscopy and two-dimensional electronic spectroscopy at room temperature and 77 K. Energy transfer between FCPII and PSII occurred remarkably fast (<5 ps), emphasizing the efficiency of FCPII as a light-harvesting antenna. The presence of long-wavelength chlorophylls may further help concentrate excitations in the core complex and increase the efficiency of light harvesting. Structure-based calculations reveal remarkably strong excitonic couplings between chlorophylls in the FCP antenna and between FCP and the PSII core antenna that are the basis for the rapid energy transfer. © 2024 American Chemical Society.
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| Additional Information: | HUN-REN Biological Research Centre, Szeged, Temesvári körút 62, Szeged, 6726, Hungary School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore Photosynthesis Research Center, Key Laboratory of Photobiology, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China Research Institute for Interdisciplinary Science, Okayama University, Okayama, 700-8530, Japan Export Date: 4 June 2024 Correspondence Address: Tan, H.-S.; School of Chemistry, 21 Nanyang Link, Singapore; email: howesiang@ntu.edu.sg Correspondence Address: Lambrev, P.H.; HUN-REN Biological Research Centre, Temesvári körút 62, Hungary; email: lambrev.petar@brc.hu Funding details: National Key Research and Development Program of China, NKRDPC Funding details: Youth Innovation Promotion Association of the Chinese Academy of Sciences, YIPA CAS Funding details: Nemzeti Kutatási, Fejlesztési és Innovaciós Alap, NKFIA Funding details: Magyar Tudományos Akadémia, MTA, 260/2024/KP Funding details: Magyar Tudományos Akadémia, MTA Funding details: Hungarian Research Network, HUN-REN, SA-76/2021 Funding details: Hungarian Research Network, HUN-REN Funding details: Chinese Academy of Sciences, CAS, YSBR-093, 2020081 Funding details: Chinese Academy of Sciences, CAS Funding details: MOE-T2EP50122-0022, RG9/21 Funding details: National Natural Science Foundation of China, NSFC, 32222007 Funding details: National Natural Science Foundation of China, NSFC Funding details: Nemzeti Kutatási Fejlesztési és Innovációs Hivatal, NKFIH, FK-139067, ANN-144012, 2018-1.2.1-NKP-2018-00009 Funding details: Nemzeti Kutatási Fejlesztési és Innovációs Hivatal, NKFIH Funding details: 2022SZX12 Funding text 1: The work was supported by grants from the National Research, Development and Innovation Fund (NKFI FK-139067 to Parveen Akhtar and ANN-144012 and 2018-1.2.1-NKP-2018-00009 to Petar H. Lambrev), the Hungarian Research Network (SA-76/2021 to Parveen Akhtar), the Hungarian Academy of Sciences (260/2024/KP to Parveen Akhtar), the Singapore Ministry of Education Academic Research Fund (RG9/21 and MOE-T2EP50122-0022 to Howe-Siang Tan), the National Key R&D Program of China, the National Natural Science Foundation of China (32222007), the Youth Innovation Promotion Association of Chinese Academy of Sciences (CAS) (2020081), the CAS Project for Young Scientists in Basic Research (YSBR-093), and the Science & Technology Specific Project in Agricultural High-Tech Industrial Demonstration Area of the Yellow River Delta (2022SZX12). The authors thank Prof. Dr. Thomas Renger for the valuable discussion. |
| Uncontrolled Keywords: | energy-transfer; photosystem-ii; energy transfer; fluorescence spectroscopy; fucoxanthin; binding proteins; structural studies; chlorophyll; light-harvesting complex; functional diversity; harvesting; antennas; ultra-fast; structural diversity; supercomplex |
| Subjects: | Q Science / természettudomány > QD Chemistry / kémia > QD02 Physical chemistry / fizikai kémia |
| SWORD Depositor: | MTMT SWORD |
| Depositing User: | MTMT SWORD |
| Date Deposited: | 12 Dec 2024 07:43 |
| Last Modified: | 12 Dec 2024 07:43 |
| URI: | https://real.mtak.hu/id/eprint/211494 |
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