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Open Access item 1H Hyperfine Interactions in the Mn-Cluster of Photosystem II in the S-2 State Detected by Hyperfine Sublevel Correlation Spectroscopy

Authors:Martínez Martínez, Jesús I.
Yruela Guerrero, Inmaculada
Picorel Castaño, Rafael
Alonso Gascón, Pablo J.
Issue Date:25-Nov-2010
Publisher:American Chemical Society
Citation:Martínez JI, Yruela I, Picorel R, Alonso PJ. H-1 Hyperfine Interactions in the Mn-Cluster of Photosystem II in the S-2 State Detected by Hyperfine Sublevel Correlation Spectroscopy. The Journal of Physical Chemistry B 114 (46): 15345–15353 (2010)
Abstract:A study of the hydrogen hyperfine couplings of the Mn-cluster of the oxygen-evolving complex of Photosystem II in the S2 state of the Kok cycle by means of hyperfine sublevel correlation spectroscopy was achieved. Features corresponding to hyperfine interaction of at least two hydrogen nuclei were detected. Combining our results with previous ENDOR data, hyperfine constants were determined, and by using a model for the structure and electronic spin state of the Mn-cluster, relevant structural information of the S2 state was obtained. This new information can be used for improving our knowledge about the structure and function of the Mn-cluster during light-driven water oxidation reaction in oxygenic photosynthetic organisms.
Description:36 Pag., 1 Tabl., 7 Fig. The definitive version is available at: http://pubs.acs.org/journal/jpcbfk
Publisher version (URL):http://dx.doi.org/10.1021/jp107017f
URI:http://hdl.handle.net/10261/33487
ISSN:1520-6106
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