In this section
@article{Consoli:2025:10.1126/science.ado6830,
author = {Consoli, G and Tufail, F and Leong, HF and Viola, S and Davis, GA and Rew, N and Medranda, D and Hofer, M and Simpson, P and Sandrin, M and Chachuat, B and Nelson, J and Renger, T and Murray, JW and Fantuzzi, A and Rutherford, AW},
doi = {10.1126/science.ado6830},
journal = {Science},
title = {Locating the missing chlorophylls f in far-red photosystem I.},
url = {http://dx.doi.org/10.1126/science.ado6830},
year = {2025}
}
TY - JOUR
AB - The discovery of chlorophyll f-containing photosystems, with their long-wavelength photochemistry, represented a distinct, low-energy paradigm for oxygenic photosynthesis. Structural studies on chlorophyll f-containing photosystem I could identify some chlorophylls f sites, but none among the photochemically active pigments and concluded that chlorophyll f plays no photochemical role. Here, we report two cryo-EM structures of far-red PSI from Chroococcidiopsis thermalis PCC 7203, allowing the assignment of eight chlorophylls f molecules, including the redox active A-1B. Simulations of absorption difference spectra induced by charge separation indicate that the experimental spectra can be reproduced only by considering the presence of a chlorophyll f at the A-1B site. The chlorophyll f locations, wavelength assignments, and conserved far-red-specific residues provide functional insights for efficient use of long wavelength photons.
AU - Consoli,G
AU - Tufail,F
AU - Leong,HF
AU - Viola,S
AU - Davis,GA
AU - Rew,N
AU - Medranda,D
AU - Hofer,M
AU - Simpson,P
AU - Sandrin,M
AU - Chachuat,B
AU - Nelson,J
AU - Renger,T
AU - Murray,JW
AU - Fantuzzi,A
AU - Rutherford,AW
DO - 10.1126/science.ado6830
PY - 2025///
TI - Locating the missing chlorophylls f in far-red photosystem I.
T2 - Science
UR - http://dx.doi.org/10.1126/science.ado6830
UR - https://www.ncbi.nlm.nih.gov/pubmed/41066538
ER -
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