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Changes in supramolecular organization of cyanobacterial thylakoid membrane complexes in response to far-red light photoacclimation

Changes in supramolecular organization of cyanobacterial thylakoid membrane complexes in response to far-red light photoacclimation
Cyanobacteria are ubiquitous in nature and have developed numerous strategies that allow them to live in a diverse range of environments. Certain cyanobacteria synthesize chlorophylls d and f to acclimate to niches enriched in far-red light (FRL) and incorporate paralogous photosynthetic proteins into their photosynthetic apparatus in a process called FRL-induced photoacclimation (FaRLiP). We characterized the macromolecular changes involved in FRL-driven photosynthesis and used atomic force microscopy to examine the supramolecular organization of photosystem I associated with FaRLiP in three cyanobacterial species. Mass spectrometry showed the changes in the proteome of Chroococcidiopsis thermalis PCC 7203 that accompany FaRLiP. Fluorescence lifetime imaging microscopy and electron microscopy reveal an altered cellular distribution of photosystem complexes and illustrate the cell-to-cell variability of the FaRLiP response.
- Imperial College London United Kingdom
- Pennsylvania State University United States
- National Taiwan University Taiwan
- Diamond Light Source United Kingdom
- Freien Universität Berlin Germany
Photosystem I, FRL-induced photoacclimation (FaRLiP), 500 Naturwissenschaften und Mathematik::530 Physik::539 Moderne Physik, Supramolecular organization, Cyanobacteria, Atomic force microscopy, FRL-driven photosynthesis, 539, Biomedicine and Life Sciences
Photosystem I, FRL-induced photoacclimation (FaRLiP), 500 Naturwissenschaften und Mathematik::530 Physik::539 Moderne Physik, Supramolecular organization, Cyanobacteria, Atomic force microscopy, FRL-driven photosynthesis, 539, Biomedicine and Life Sciences
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