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Cryo-electron micro...
Cryo-electron microscopy reveals hydrogen positions and water networks in photosystem II
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- Hussein, Rana (author)
- Department of Biology, Humboldt-Universität zu Berlin, Berlin, Germany
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- Graça, André T. (author)
- Umeå universitet,Kemiska institutionen,Molecular Biomimetics, Department of Chemistry- Ångström Laboratory, Uppsala University, Uppsala, Sweden
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- Forsman, Jack (author)
- Umeå universitet,Kemiska institutionen
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- Aydin, A. Orkun (author)
- Molecular Biomimetics, Department of Chemistry- Ångström Laboratory, Uppsala University, Uppsala, Sweden
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- Hall, Michael, 1980- (author)
- Umeå universitet,Kemiska institutionen
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- Gaetcke, Julia (author)
- Department of Biology, Humboldt-Universität zu Berlin, Berlin, Germany
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- Chernev, Petko (author)
- Molecular Biomimetics, Department of Chemistry- Ångström Laboratory, Uppsala University, Uppsala, Sweden
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- Wendler, Petra (author)
- Institute of Biochemistry and Biology, Department of Biochemistry, University of Potsdam, Potsdam-Golm, Germany
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- Dobbek, Holger (author)
- Department of Biology, Humboldt-Universität zu Berlin, Berlin, Germany
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- Messinger, Johannes, 1963- (author)
- Umeå universitet,Institutionen för fysiologisk botanik,Kemiska institutionen,Molecular Biomimetics, Department of Chemistry- Ångström Laboratory, Uppsala University, Uppsala, Sweden
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- Zouni, Athina (author)
- Department of Biology, Humboldt-Universität zu Berlin, Berlin, Germany
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- Schröder, Wolfgang P. (author)
- Umeå universitet,Kemiska institutionen,Institutionen för fysiologisk botanik,Umeå Plant Science Centre (UPSC)
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(creator_code:org_t)
- American Association for the Advancement of Science (AAAS), 2024
- 2024
- English.
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In: Science. - : American Association for the Advancement of Science (AAAS). - 0036-8075 .- 1095-9203. ; 384:6702, s. 1349-1355
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
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- Photosystem II starts the photosynthetic electron transport chain that converts solar energy into chemical energy and thus sustains life on Earth. It catalyzes two chemical reactions: water oxidation to molecular oxygen and plastoquinone reduction. Coupling of electron and proton transfer is crucial for efficiency; however, the molecular basis of these processes remains speculative owing to uncertain water binding sites and the lack of experimentally determined hydrogen positions. We thus collected high-resolution cryo-electron microscopy data of fully hydrated photosystem II from the thermophilic cyanobacterium Thermosynechococcus vestitus to a final resolution of 1.71 angstroms. The structure reveals several previously undetected partially occupied water binding sites and more than half of the hydrogen and proton positions. This clarifies the pathways of substrate water binding and plastoquinone B protonation.
Subject headings
- NATURVETENSKAP -- Biologi -- Biokemi och molekylärbiologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Biochemistry and Molecular Biology (hsv//eng)
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- ref (subject category)
- art (subject category)
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- By the author/editor
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Hussein, Rana
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Graça, André T.
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Forsman, Jack
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Aydin, A. Orkun
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Hall, Michael, 1 ...
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Gaetcke, Julia
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show more...
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Chernev, Petko
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Wendler, Petra
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Dobbek, Holger
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Messinger, Johan ...
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Zouni, Athina
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Schröder, Wolfga ...
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Biological Scien ...
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and Biochemistry and ...
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Science
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Umeå University