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The Mn4Ca photosynthetic water-oxidation catalyst studied by simultaneous X-ray spectroscopy and crystallography using an X-ray free-electron laser
Umeå University, Faculty of Science and Technology, Department of Chemistry.
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2014 (English)In: Philosophical Transactions of the Royal Society of London. Biological Sciences, ISSN 0962-8436, E-ISSN 1471-2970, Vol. 369, no 1647, 20130324- p.Article, review/survey (Refereed) Published
Abstract [en]

The structure of photosystem II and the catalytic intermediate states of the Mn4CaO5 cluster involved in water oxidation have been studied intensively over the past several years. An understanding of the sequential chemistry of light absorption and the mechanism of water oxidation, however, requires a new approach beyond the conventional steady-state crystallography and X-ray spectroscopy at cryogenic temperatures. In this report, we present the preliminary progress using an X-ray free-electron laser to determine simultaneously the light-induced protein dynamics via crystallography and the local chemistry that occurs at the catalytic centre using X-ray spectroscopy under functional conditions at room temperature.

Place, publisher, year, edition, pages
2014. Vol. 369, no 1647, 20130324- p.
Keyword [en]
manganese, oxygen-evolving complex, photosystem II, X-ray crystallography, X-ray emission spectroscopy, X-ray free-electron laser
National Category
Organic Chemistry
Identifiers
URN: urn:nbn:se:umu:diva-91183DOI: 10.1098/rstb.2013.0324ISI: 000337367600009OAI: oai:DiVA.org:umu-91183DiVA: diva2:735180
Available from: 2014-07-23 Created: 2014-07-21 Last updated: 2017-12-05Bibliographically approved

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Koroidov, SergeyMessinger, Johannes
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