Structures of Photosynthetic Supramolecular Complexes
Zhenfeng Liu1, Xin You2, Mei Li1
1State Key Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences; and College of Life Sciences, University of Chinese Academy of Sciences, Beijing, China;
Annual Review of Biophysics
|February 5, 2026
Summary
Structural biology reveals how photosynthetic complexes assemble into supercomplexes. These structures are crucial for understanding energy conversion, electron flow, and carbon fixation in plants and bacteria.
Area of Science:
- Biochemistry
- Structural Biology
- Photosynthesis Research
Background:
- Photosynthesis converts light energy into chemical energy through complex biological processes.
- Photosynthetic complexes can form supramolecular assemblies to enhance function and regulation.
- Understanding these structures is key to deciphering energy transfer and carbon fixation.
Purpose of the Study:
- To review advancements in structural biology of photosynthetic supramolecular complexes.
- To highlight insights gained from cryo-electron microscopy (cryo-EM) studies.
- To discuss the implications for understanding photosynthesis, electron flow, and carbon fixation.
Main Methods:
- Review of structural biology studies, focusing on cryo-electron microscopy (cryo-EM).
- Analysis of structural data for various photosynthetic supramolecular complexes.
- Integration of findings related to light-harvesting complexes, photosystems, and associated enzymes.
Main Results:
- Detailed architectures of NADH dehydrogenase-like (NDH) complex and PSI-NDH supercomplex revealed.
- Insights into the assembly and repair mechanisms of photosystem II (PSII).
- Understanding the regulation of ATP synthase and carbon fixation pathways.
Conclusions:
- Structural biology provides critical frameworks for understanding molecular mechanisms in photosynthesis.
- Cryo-EM has significantly advanced our knowledge of photosynthetic supercomplexes.
- Emerging directions promise further breakthroughs in photosynthetic research.
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