Mn K-Edge XANES and Kβ XES Studies of Two Mn−Oxo Binuclear Complexes:  Investigation of Three Different Oxidation States Relevant to the Oxygen-Evolving Complex of Photosystem II

2001 ◽  
Vol 123 (29) ◽  
pp. 7031-7039 ◽  
Author(s):  
Hendrik Visser ◽  
Elodie Anxolabéhère-Mallart ◽  
Uwe Bergmann ◽  
Pieter Glatzel ◽  
John H. Robblee ◽  
...  
Keyword(s):  
Photosystem Ii ◽  
Oxidation States ◽  
Oxygen Evolving Complex ◽  
Binuclear Complexes ◽  
Oxygen Evolving

scholarly journals Refined Model of the Oxidation States and Structures of the Mn/Ca/Cl Cluster of the Oxygen Evolving Complex of Photosystem II

1998 ◽  
pp. 1273-1278 ◽  
Author(s):  
Roehl M. Cinco ◽  
Carmen Fernandez ◽  
Johannes Messinger ◽  
John H. Robblee ◽  
Henk Visser ◽  
...  
Keyword(s):  
Photosystem Ii ◽  
Oxidation States ◽  
Oxygen Evolving Complex ◽  
Refined Model ◽  
Oxygen Evolving

scholarly journals Metal oxidation states in biological water splitting

2015 ◽  
Vol 6 (3) ◽  
pp. 1676-1695 ◽  
Author(s):  
Vera Krewald ◽  
Marius Retegan ◽  
Nicholas Cox ◽  
Johannes Messinger ◽  
Wolfgang Lubitz ◽  
...  
Keyword(s):  
Photosystem Ii ◽  
Water Splitting ◽  
Oxidation States ◽  
Oxygen Evolving Complex ◽  
Central Question ◽  
Manganese Ions ◽  
Metal Oxidation ◽  
Biological Water ◽  
Oxygen Evolving

A central question in biological water splitting concerns the oxidation states of the manganese ions that comprise the oxygen-evolving complex of photosystem II.

Towards models of the oxygen-evolving complex (OEC) of photosystem II: a Mn4Ca cluster of relevance to low oxidation states of the OEC

2011 ◽  
Vol 47 (39) ◽  
pp. 11128 ◽  
Author(s):  
Evangelia S. Koumousi ◽  
Shreya Mukherjee ◽  
Christine M. Beavers ◽  
Simon J. Teat ◽  
George Christou ◽  
...  
Keyword(s):  
Photosystem Ii ◽  
Oxidation States ◽  
Oxygen Evolving Complex ◽  
Oxygen Evolving

scholarly journals Structural Changes in the Acceptor Site of Photosystem II upon Ca2+/Sr2+ Exchange in the Mn4CaO5 Cluster Site and the Possible Long-Range Interactions

Biomolecules ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 371
Author(s):  
Koua
Keyword(s):  
Crystal Structure ◽  
Photosystem Ii ◽  
Long Range ◽  
Electron Acceptor ◽  
Structural Changes ◽  
Acceptor Site ◽  
Oxygen Evolving Complex ◽  
Long Range Interactions ◽  
Structural Perturbations ◽  
Oxygen Evolving

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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