Triplet dipoles in the absorption spectra of dense rare gas fluids. II. Long range interactions

1989 ◽  
Vol 91 (6) ◽  
pp. 3456-3462 ◽  
Author(s):  
Bertrand Guillot
2008 ◽  
Vol 78 (6) ◽  
Author(s):  
J. Y. Zhang ◽  
J. Mitroy ◽  
H. R. Sadeghpour ◽  
M. W. J. Bromley

Biomolecules ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 371
Author(s):  
Koua

The Mn4CaO5 cluster site in the oxygen-evolving complex (OEC) of photosystem II (PSII) undergoes structural perturbations, such as those induced by Ca2+/Sr2+ exchanges or Ca/Mn removal. These changes have been known to induce long-range positive shifts (between +30 and +150 mV) in the redox potential of the primary quinone electron acceptor plastoquinone A (QA), which is located 40 Å from the OEC. To further investigate these effects, we reanalyzed the crystal structure of Sr-PSII resolved at 2.1 Å and compared it with the native Ca-PSII resolved at 1.9 Å. Here, we focus on the acceptor site and report the possible long-range interactions between the donor, Mn4Ca(Sr)O5 cluster, and acceptor sites.


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