Ultrafast exciton energy transfer dynamics in the cryptophyte light-harvesting antenna phycoerythrin 566
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 <i>Cryptophyta</i> PE566, which may advance photophysical studies of phycobiliprotein systems.
Authors
- Zidong Liang
- Mingyuan Xie (ORCID: https://orcid.org/0000-0002-8430-2449)
- Zhencheng Huang
- Min Chen (ORCID: https://orcid.org/0000-0002-9943-8672)
- Lei Zhang (ORCID: https://orcid.org/0000-0002-9301-0181)
- Na Guo (ORCID: https://orcid.org/0000-0002-1834-7980)
- Song Qin
- Yang Pu
- Xinyu Guo (ORCID: https://orcid.org/0000-0002-4668-057X)
- Fuli Zhao (ORCID: https://orcid.org/0000-0001-8180-1130)
- Wenjun Li (ORCID: https://orcid.org/0000-0001-8533-6432)
Institutions
- Sun Yat-sen University (CN)
- Ludong University (CN)
- Yantai University (CN)
- Yantai Institute of Coastal Zone Research (CN)
Publication Details
- Journal
- Frontiers in Plant Science
- Published
- 2025-12-02
- DOI
- https://doi.org/10.3389/fpls.2025.1682154
- Primary Topic
- Photosynthetic Processes and Mechanisms
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- Natural Science Foundation of Shandong Province
- National Key Research and Development Program of China