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Untangling the sequ...
Untangling the sequence of events during the S-2 -> S-3 transition in photosystem II and implications for the water oxidation mechanism
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- Ibrahim, Mohamed (författare)
- Humboldt Univ, Inst Biol, D-10115 Berlin, Germany.
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- Fransson, Thomas (författare)
- Heidelberg Univ, Interdisciplinary Ctr Sci Comp, D-69120 Heidelberg, Germany.
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- Chatterjee, Ruchira (författare)
- Lawrence Berkeley Natl Lab, Mol Biophys & Integrated Bioimaging Div, Berkeley, CA 94720 USA.
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- Cheah, Mun Hon (författare)
- Uppsala universitet,Molekylär biomimetik
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- Hussein, Rana (författare)
- Humboldt Univ, Inst Biol, D-10115 Berlin, Germany.
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- Lassalle, Louise (författare)
- Lawrence Berkeley Natl Lab, Mol Biophys & Integrated Bioimaging Div, Berkeley, CA 94720 USA.
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- Sutherlin, Kyle D. (författare)
- Lawrence Berkeley Natl Lab, Mol Biophys & Integrated Bioimaging Div, Berkeley, CA 94720 USA.
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- Young, Iris D. (författare)
- Lawrence Berkeley Natl Lab, Mol Biophys & Integrated Bioimaging Div, Berkeley, CA 94720 USA.;Univ Calif San Francisco, Dept Bioengn & Therapeut Sci, San Francisco, CA 94158 USA.
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- Fuller, Franklin D. (författare)
- SLAC Natl Accelerator Lab, Linac Coherent Light Source, Menlo Pk, CA 94025 USA.
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- Gul, Sheraz (författare)
- Lawrence Berkeley Natl Lab, Mol Biophys & Integrated Bioimaging Div, Berkeley, CA 94720 USA.
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- Kim, In-Sik (författare)
- Lawrence Berkeley Natl Lab, Mol Biophys & Integrated Bioimaging Div, Berkeley, CA 94720 USA.
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- Simon, Philipp S. (författare)
- Lawrence Berkeley Natl Lab, Mol Biophys & Integrated Bioimaging Div, Berkeley, CA 94720 USA.
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- de Lichtenberg, Casper (författare)
- Uppsala universitet,Molekylär biomimetik,Umeå Univ, Kemiskt Biol Ctr, Inst Kemi, SE-90187 Umeå, Sweden.
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- Chernev, Petko (författare)
- Uppsala universitet,Molekylär biomimetik,Uppsala Univ, Dept Chem Ångström, Mol Biomimet, SE-75120 Uppsala, Sweden.
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- Bogacz, Isabel (författare)
- Lawrence Berkeley Natl Lab, Mol Biophys & Integrated Bioimaging Div, Berkeley, CA 94720 USA.
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- Pham, Cindy C. (författare)
- Lawrence Berkeley Natl Lab, Mol Biophys & Integrated Bioimaging Div, Berkeley, CA 94720 USA.
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- Orville, Allen M. (författare)
- Diamond Light Source Ltd, Harwell Sci & Innovat Campus, Didcot OX11 0DE, Oxon, England.;Rutherford Appleton Lab, Res Complex Harwell, Didcot OX11 0FA, Oxon, England.
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- Saichek, Nicholas (författare)
- Lawrence Berkeley Natl Lab, Environm Genom & Syst Biol Div, Berkeley, CA 94720 USA.
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- Northen, Trent (författare)
- Lawrence Berkeley Natl Lab, Environm Genom & Syst Biol Div, Berkeley, CA 94720 USA.
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- Batyuk, Alexander (författare)
- SLAC Natl Accelerator Lab, Linac Coherent Light Source, Menlo Pk, CA 94025 USA.
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- Carbajo, Sergio (författare)
- SLAC Natl Accelerator Lab, Linac Coherent Light Source, Menlo Pk, CA 94025 USA.
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- Alonso-Mori, Roberto (författare)
- SLAC Natl Accelerator Lab, Linac Coherent Light Source, Menlo Pk, CA 94025 USA.
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- Tono, Kensuke (författare)
- Japan Synchrotron Radiat Res Inst, Sayo, Hyogo 6795198, Japan.;RIKEN SPring 8 Ctr, Sayo, Hyogo 6795148, Japan.
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- Owada, Shigeki (författare)
- Japan Synchrotron Radiat Res Inst, Sayo, Hyogo 6795198, Japan.;RIKEN SPring 8 Ctr, Sayo, Hyogo 6795148, Japan.
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- Bhowmick, Asmit (författare)
- Lawrence Berkeley Natl Lab, Mol Biophys & Integrated Bioimaging Div, Berkeley, CA 94720 USA.
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- Bolotovsky, Robert (författare)
- Lawrence Berkeley Natl Lab, Mol Biophys & Integrated Bioimaging Div, Berkeley, CA 94720 USA.
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- Mendez, Derek (författare)
- Lawrence Berkeley Natl Lab, Mol Biophys & Integrated Bioimaging Div, Berkeley, CA 94720 USA.
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- Moriarty, Nigel W. (författare)
- Lawrence Berkeley Natl Lab, Mol Biophys & Integrated Bioimaging Div, Berkeley, CA 94720 USA.
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- Holton, James M. (författare)
- Lawrence Berkeley Natl Lab, Mol Biophys & Integrated Bioimaging Div, Berkeley, CA 94720 USA.;SLAC Natl Accelerator Lab, Stanford Synchrotron Radiat Lightsource, Menlo Pk, CA USA.;Univ Calif San Francisco, Dept Biochem & Biophys, San Francisco, CA 94158 USA.
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- Dobbek, Holger (författare)
- Humboldt Univ, Inst Biol, D-10115 Berlin, Germany.
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- Brewster, Aaron S. (författare)
- Lawrence Berkeley Natl Lab, Mol Biophys & Integrated Bioimaging Div, Berkeley, CA 94720 USA.
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- Adams, Paul D. (författare)
- Lawrence Berkeley Natl Lab, Mol Biophys & Integrated Bioimaging Div, Berkeley, CA 94720 USA.;Univ Calif Berkeley, Dept Bioengn, Berkeley, CA 94720 USA.
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- Sauter, Nicholas K. (författare)
- Lawrence Berkeley Natl Lab, Mol Biophys & Integrated Bioimaging Div, Berkeley, CA 94720 USA.
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- Bergmann, Uwe (författare)
- SLAC Natl Accelerator Lab, Stanford PULSE Inst, Menlo Pk, CA 94025 USA.
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- Zouni, Athina (författare)
- Humboldt Univ, Inst Biol, D-10115 Berlin, Germany.
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- Messinger, Johannes, Prof. Dr. 1963- (författare)
- Uppsala universitet,Molekylär biomimetik,Umea Univ, Kemiskt Biol Ctr, Inst Kemi, SE-90187 Umea, Sweden.
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- Kern, Jan (författare)
- Lawrence Berkeley Natl Lab, Mol Biophys & Integrated Bioimaging Div, Berkeley, CA 94720 USA.
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- Yachandra, Vittal K. (författare)
- Lawrence Berkeley Natl Lab, Mol Biophys & Integrated Bioimaging Div, Berkeley, CA 94720 USA.
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- Yano, Junko (författare)
- Lawrence Berkeley Natl Lab, Mol Biophys & Integrated Bioimaging Div, Berkeley, CA 94720 USA.
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Humboldt Univ, Inst Biol, D-10115 Berlin, Germany Heidelberg Univ, Interdisciplinary Ctr Sci Comp, D-69120 Heidelberg, Germany. (creator_code:org_t)
- 2020-05-20
- 2020
- Engelska.
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Ingår i: Proceedings of the National Academy of Sciences of the United States of America. - : NATL ACAD SCIENCES. - 0027-8424 .- 1091-6490. ; 117:23, s. 12624-12635
- Relaterad länk:
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https://www.pnas.org...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- In oxygenic photosynthesis, light-driven oxidation of water to molecular oxygen is carried out by the oxygen-evolving complex (OEC) in photosystem II (PS II). Recently, we reported the room-temperature structures of PS II in the four (semi)stable S-states, S-1, S-2, S-3, and S-0, showing that a water molecule is inserted during the S-2 -> S-3 transition, as a new bridging O(H)-ligand between Mn1 and Ca. To understand the sequence of events leading to the formation of this last stable intermediate state before O-2 formation, we recorded diffraction and Mn X-ray emission spectroscopy (XES) data at several time points during the S-2 -> S-3 transition. At the electron acceptor site, changes due to the two-electron redox chemistry at the quinones, QA and QB, are observed. At the donor site, tyrosine YZ and His190 H-bonded to it move by 50 mu s after the second flash, and Glu189 moves away from Ca. This is followed by Mn1 and Mn4 moving apart, and the insertion of OX(H) at the open coordination site of Mn1. This water, possibly a ligand of Ca, could be supplied via a "water wheel"-like arrangement of five waters next to the OEC that is connected by a large channel to the bulk solvent. XES spectra show that Mn oxidation (t of similar to 350 mu s) during the S-2 -> S-3 transition mirrors the appearance of OX electron density. This indicates that the oxidation state change and the insertion of water as a bridging atom between Mn1 and Ca are highly correlated.
Ämnesord
- NATURVETENSKAP -- Biologi -- Biokemi och molekylärbiologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Biochemistry and Molecular Biology (hsv//eng)
- NATURVETENSKAP -- Kemi -- Fysikalisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Physical Chemistry (hsv//eng)
Nyckelord
- photosynthesis
- photosystem II
- water oxidation
- oxygen-evolving complex
- X-ray free electron laser
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- Av författaren/redakt...
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Ibrahim, Mohamed
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Fransson, Thomas
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Chatterjee, Ruch ...
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Cheah, Mun Hon
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Hussein, Rana
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Lassalle, Louise
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visa fler...
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Sutherlin, Kyle ...
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Young, Iris D.
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Fuller, Franklin ...
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Gul, Sheraz
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Kim, In-Sik
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Simon, Philipp S ...
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de Lichtenberg, ...
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Chernev, Petko
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Bogacz, Isabel
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Pham, Cindy C.
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Orville, Allen M ...
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Saichek, Nichola ...
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Northen, Trent
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Batyuk, Alexande ...
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Carbajo, Sergio
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Alonso-Mori, Rob ...
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Tono, Kensuke
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Owada, Shigeki
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Bhowmick, Asmit
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Bolotovsky, Robe ...
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Mendez, Derek
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Moriarty, Nigel ...
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Holton, James M.
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Dobbek, Holger
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Brewster, Aaron ...
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Adams, Paul D.
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Sauter, Nicholas ...
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Bergmann, Uwe
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Zouni, Athina
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Messinger, Johan ...
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Kern, Jan
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Yachandra, Vitta ...
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Yano, Junko
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