151
|
Shoji M, Isobe H, Yamaguchi K. QM/MM study of the S2 to S3 transition reaction in the oxygen-evolving complex of photosystem II. Chem Phys Lett 2015. [DOI: 10.1016/j.cplett.2015.07.039] [Citation(s) in RCA: 72] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
|
152
|
Najafpour MM, Ghobadi MZ, Larkum AW, Shen JR, Allakhverdiev SI. The biological water-oxidizing complex at the nano-bio interface. TRENDS IN PLANT SCIENCE 2015; 20:559-68. [PMID: 26183174 DOI: 10.1016/j.tplants.2015.06.005] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2014] [Revised: 05/30/2015] [Accepted: 06/16/2015] [Indexed: 05/03/2023]
Abstract
Photosynthesis is one of the most important processes on our planet, providing food and oxygen for the majority of living organisms on Earth. Over the past 30 years scientists have made great strides in understanding the central photosynthetic process of oxygenic photosynthesis, whereby water is used to provide the hydrogen and reducing equivalents vital to CO2 reduction and sugar formation. A recent crystal structure at 1.9-1.95Å has made possible an unparalleled map of the structure of photosystem II (PSII) and particularly the manganese-calcium (Mn-Ca) cluster, which is responsible for splitting water. Here we review how knowledge of the water-splitting site provides important criteria for the design of artificial Mn-based water-oxidizing catalysts, allowing the development of clean and sustainable solar energy technologies.
Collapse
Affiliation(s)
- Mohammad Mahdi Najafpour
- Department of Chemistry, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan 45137-66731, Iran; Center of Climate Change and Global Warming, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan 45137-66731, Iran.
| | - Mohadeseh Zarei Ghobadi
- Department of Chemistry, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan 45137-66731, Iran
| | - Anthony W Larkum
- Plant Functional Biology and Climate Change Cluster, University of Technology Sydney, Sydney, Australia
| | - Jian-Ren Shen
- Photosynthesis Research Center, Graduate School of Natural Science and Technology, Faculty of Science, Okayama University, Okayama 700-8530, Japan
| | - Suleyman I Allakhverdiev
- Controlled Photobiosynthesis Laboratory, Institute of Plant Physiology, Russian Academy of Sciences, Botanicheskaya Street 35, Moscow 127276, Russia; Institute of Basic Biological Problems, Russian Academy of Sciences, Pushchino, Moscow Region 142290, Russia; Department of Plant Physiology, Faculty of Biology, M.V. Lomonosov Moscow State University, Leninskie Gory 1-12, Moscow 119991, Russia.
| |
Collapse
|
153
|
Semin BK, Davletshina LN, Rubin AB. Correlation between pH dependence of O2 evolution and sensitivity of Mn cations in the oxygen-evolving complex to exogenous reductants. PHOTOSYNTHESIS RESEARCH 2015; 125:95-103. [PMID: 25975707 DOI: 10.1007/s11120-015-0155-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2015] [Accepted: 05/05/2015] [Indexed: 06/04/2023]
Abstract
Effects of pH, Ca(2+), and Cl(-) ions on the extraction of Mn cations from oxygen-evolving complex (OEC) in Ca-depleted photosystem II (PSII(-Ca)) by exogenous reductants hydroquinone (H2Q) and H2O2 were studied. Two of 4 Mn cations are released by H2Q and H2O2 at pHs 5.7, 6.5, and 7.5, and their extraction does not depend on the presence of Ca(2+) and Cl(-) ions. One of Mn cations ("resistant" Mn cation) cannot be extracted by H2Q and H2O2 at any pH. Extraction of 4th Mn ion ("flexible" Mn cation) is sensitive to pH, Ca(2+), and Cl(-). This Mn cation is released by reductants at pH 6.5 but not at pHs 5.7 and 7.5. A pH dependence curve of the oxygen-evolving activity in PSII(-Ca) membranes (in the presence of exogenous Ca(2+)) has a bell-shaped form with the maximum at pH 6.5. Thus, the increase in the resistance of flexible Mn cation in OEC to the action of reductants at acidic and alkaline pHs coincides with the decrease in oxygen evolution activity at these pHs. Exogenous Ca(2+) protects the extraction of flexible Mn cation at pH 6.5. High concentration of Cl(-) anions (100 mM) shifts the pH optimum of oxygen evolution to alkaline region (around pH 7.5), while the pH of flexible Mn extraction is also shifted to alkaline pH. This result suggests that flexible Mn cation plays a key role in the water-splitting reaction. The obtained results also demonstrate that only one Mn cation in Mn4 cluster is under strong control of calcium. The change in the flexible Mn cation resistance to exogenous reductants in the presence of Ca(2+) suggests that Ca(2+) can control the redox potential of this cation.
Collapse
Affiliation(s)
- Boris K Semin
- Department of Biophysics, Faculty of Biology, Lomonosov Moscow State University, 119234, Moscow, Russia,
| | | | | |
Collapse
|
154
|
Cox N, Pantazis DA, Neese F, Lubitz W. Artificial photosynthesis: understanding water splitting in nature. Interface Focus 2015; 5:20150009. [PMID: 26052426 PMCID: PMC4410565 DOI: 10.1098/rsfs.2015.0009] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
In the context of a global artificial photosynthesis (GAP) project, we review our current work on nature's water splitting catalyst. In a recent report (Cox et al. 2014 Science 345, 804-808 (doi:10.1126/science.1254910)), we showed that the catalyst-a Mn4O5Ca cofactor-converts into an 'activated' form immediately prior to the O-O bond formation step. This activated state, which represents an all Mn(IV) complex, is similar to the structure observed by X-ray crystallography but requires the coordination of an additional water molecule. Such a structure locates two oxygens, both derived from water, in close proximity, which probably come together to form the product O2 molecule. We speculate that formation of the activated catalyst state requires inherent structural flexibility. These features represent new design criteria for the development of biomimetic and bioinspired model systems for water splitting catalysts using first-row transition metals with the aim of delivering globally deployable artificial photosynthesis technologies.
Collapse
Affiliation(s)
- Nicholas Cox
- Max-Planck-Institut für Chemische Energiekonversion, Stiftstr. 34-36, 45470 Mülheim an der Ruhr, Germany
| | | | | | - Wolfgang Lubitz
- Max-Planck-Institut für Chemische Energiekonversion, Stiftstr. 34-36, 45470 Mülheim an der Ruhr, Germany
| |
Collapse
|
155
|
Nakamori H, Matsumoto T, Yatabe T, Yoon KS, Nakai H, Ogo S. Synthesis and crystal structure of a dinuclear, monomeric Mn(II) p-semiquinonato complex. Chem Commun (Camb) 2015; 50:13059-61. [PMID: 25221918 DOI: 10.1039/c4cc06055e] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Herein, we report the first crystal structure of a monomeric p-semiquinonato d-block complex and its reactivity toward dioxygen, closely associated with a biological system of an oxygen evolving centre of photosystem II.
Collapse
Affiliation(s)
- Harutaka Nakamori
- Centre for Small Molecule Energy, Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan.
| | | | | | | | | | | |
Collapse
|
156
|
Lohmiller T, Shelby ML, Long X, Yachandra VK, Yano J. Removal of Ca(2+) from the Oxygen-Evolving Complex in Photosystem II Has Minimal Effect on the Mn4O5 Core Structure: A Polarized Mn X-ray Absorption Spectroscopy Study. J Phys Chem B 2015; 119:13742-54. [PMID: 25989608 DOI: 10.1021/acs.jpcb.5b03559] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Ca(2+)-depleted and Ca(2+)-reconstituted spinach photosystem II was studied using polarized X-ray absorption spectroscopy of oriented PS II preparations to investigate the structural and functional role of the Ca(2+) ion in the Mn4O5Ca cluster of the oxygen-evolving complex (OEC). Samples were prepared by low pH/citrate treatment as one-dimensionally ordered membrane layers and poised in the Ca(2+)-depleted S1 (S1') and S2 (S2') states, the S2'YZ(•) state, at which point the catalytic cycle of water oxidation is inhibited, and the Ca(2+)-reconstituted S1 state. Polarized Mn K-edge XANES and EXAFS spectra exhibit pronounced dichroism. Polarized EXAFS data of all states of Ca(2+)-depleted PS II investigated show only minor changes in distances and orientations of the Mn-Mn vectors compared to the Ca(2+)-containing OEC, which may be attributed to some loss of rigidity of the core structure. Thus, removal of the Ca(2+) ion does not lead to fundamental distortion or rearrangement of the tetranuclear Mn cluster, which indicates that the Ca(2+) ion in the OEC is not critical for structural maintenance of the cluster, at least in the S1 and S2 states, but fulfills a crucial catalytic function in the mechanism of the water oxidation reaction. On the basis of this structural information, reasons for the inhibitory effect of Ca(2+) removal are discussed, attributing to the Ca(2+) ion a fundamental role in organizing the surrounding (substrate) water framework and in proton-coupled electron transfer to YZ(•) (D1-Tyr161).
Collapse
Affiliation(s)
- Thomas Lohmiller
- Physical Biosciences Division, Lawrence Berkeley National Laboratory , Berkeley, California 94720-5230, United States
| | - Megan L Shelby
- Physical Biosciences Division, Lawrence Berkeley National Laboratory , Berkeley, California 94720-5230, United States
| | - Xi Long
- Physical Biosciences Division, Lawrence Berkeley National Laboratory , Berkeley, California 94720-5230, United States
| | - Vittal K Yachandra
- Physical Biosciences Division, Lawrence Berkeley National Laboratory , Berkeley, California 94720-5230, United States
| | - Junko Yano
- Physical Biosciences Division, Lawrence Berkeley National Laboratory , Berkeley, California 94720-5230, United States
| |
Collapse
|
157
|
Fernando A, Weerawardene KLDM, Karimova NV, Aikens CM. Quantum Mechanical Studies of Large Metal, Metal Oxide, and Metal Chalcogenide Nanoparticles and Clusters. Chem Rev 2015; 115:6112-216. [PMID: 25898274 DOI: 10.1021/cr500506r] [Citation(s) in RCA: 217] [Impact Index Per Article: 24.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Amendra Fernando
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506, United States
| | | | - Natalia V Karimova
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506, United States
| | - Christine M Aikens
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506, United States
| |
Collapse
|
158
|
Retegan M, Cox N, Lubitz W, Neese F, Pantazis DA. The first tyrosyl radical intermediate formed in the S2-S3 transition of photosystem II. Phys Chem Chem Phys 2015; 16:11901-10. [PMID: 24760184 DOI: 10.1039/c4cp00696h] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The EPR "split signals" represent key intermediates of the S-state cycle where the redox active D1-Tyr161 (YZ) has been oxidized by the reaction center of the photosystem II enzyme to its tyrosyl radical form, but the successive oxidation of the Mn4CaO5 cluster has not yet occurred (SiYZ˙). Here we focus on the S2YZ˙ state, which is formed en route to the final metastable state of the catalyst, the S3 state, the state which immediately precedes O-O bond formation. Quantum chemical calculations demonstrate that both isomeric forms of the S2 state, the open and closed cubane isomers, can form states with an oxidized YZ˙ residue without prior deprotonation of the Mn4CaO5 cluster. The two forms are expected to lie close in energy and retain the electronic structure and magnetic topology of the corresponding S2 state of the inorganic core. As expected, tyrosine oxidation results in a proton shift towards His190. Analysis of the electronic rearrangements that occur upon formation of the tyrosyl radical suggests that a likely next step in the catalytic cycle is the deprotonation of a terminal water ligand (W1) of the Mn4CaO5 cluster. Diamagnetic metal ion substitution is used in our calculations to obtain the molecular g-tensor of YZ˙. It is known that the gx value is a sensitive probe not only of the extent of the proton shift between the tyrosine-histidine pair, but also of the polarization environment of the tyrosine, especially about the phenolic oxygen. It is shown for PSII that this environment is determined by the Ca(2+) ion, which locates two water molecules about the phenoxyl oxygen, indirectly modulating the oxidation potential of YZ.
Collapse
Affiliation(s)
- Marius Retegan
- Max Planck Institute for Chemical Energy Conversion, Stiftstr. 34-38, 45470 Mülheim an der Ruhr, Germany.
| | | | | | | | | |
Collapse
|
159
|
Boussac A, Rutherford AW, Sugiura M. Electron transfer pathways from the S2-states to the S3-states either after a Ca2+/Sr2+ or a Cl-/I- exchange in Photosystem II from Thermosynechococcus elongatus. BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS 2015; 1847:576-86. [PMID: 25843552 DOI: 10.1016/j.bbabio.2015.03.006] [Citation(s) in RCA: 83] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2014] [Revised: 03/25/2015] [Accepted: 03/29/2015] [Indexed: 01/12/2023]
Abstract
The site for water oxidation in Photosystem II (PSII) goes through five sequential oxidation states (S0 to S4) before O2 is evolved. It consists of a Mn4CaO5-cluster close to a redox-active tyrosine residue (YZ). Cl- is also required for enzyme activity. By using EPR spectroscopy it has been shown that both Ca2+/Sr2+ exchange and Cl-/I- exchange perturb the proportions of centers showing high (S=5/2) and low spin (S=1/2) forms of the S2-state. The S3-state was also found to be heterogeneous with: i) a S=3 form that is detectable by EPR and not sensitive to near-infrared light; and ii) a form that is not EPR visible but in which Mn photochemistry occurs resulting in the formation of a (S2YZ)' split EPR signal upon near-infrared illumination. In Sr/Cl-PSII, the high spin (S=5/2) form of S2 shows a marked heterogeneity with a g=4.3 form generated at low temperature that converts to a relaxed form at g=4.9 at higher temperatures. The high spin g=4.9 form can then progress to the EPR detectable form of S3 at temperatures as low as 180K whereas the low spin (S=1/2) S2-state can only advance to the S3 state at temperatures≥235 K. Both of the two S2 configurations and the two S3 configurations are each shown to be in equilibrium at ≥235 K but not at 198 K. Since both S2 configurations are formed at 198 K, they likely arise from two specific populations of S1. The existence of heterogeneous populations in S1, S2 and S3 states may be related to the structural flexibility associated with the positioning of the oxygen O5 within the cluster highlighted in computational approaches and which has been linked to substrate exchange. These data are discussed in the context of recent in silico studies of the electron transfer pathways between the S2-state(s) and the S3-state(s).
Collapse
Affiliation(s)
- Alain Boussac
- I(2)BC, CNRS UMR 9198, CEA Saclay, 91191 Gif-sur-Yvette, France.
| | | | - Miwa Sugiura
- Proteo-Science Research Center, Ehime University, Bunkyo-cho, Matsuyama, Ehime 790-8577, Japan; Department of Chemistry, Graduate School of Science and Technology, Ehime University, Bunkyo-cho, Matsuyama, Ehime 790-8577, Japan; PRESTO, Japan Science and Technology Agency (JST), 4-1-8, Honcho, Kawaguchi, Saitama 332-0012, Japan
| |
Collapse
|
160
|
High-valent metal-oxo intermediates in energy demanding processes: from dioxygen reduction to water splitting. Curr Opin Chem Biol 2015; 25:159-71. [DOI: 10.1016/j.cbpa.2015.01.014] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2014] [Revised: 01/20/2015] [Accepted: 01/21/2015] [Indexed: 11/15/2022]
|
161
|
Vogt L, Vinyard DJ, Khan S, Brudvig GW. Oxygen-evolving complex of Photosystem II: an analysis of second-shell residues and hydrogen-bonding networks. Curr Opin Chem Biol 2015; 25:152-8. [DOI: 10.1016/j.cbpa.2014.12.040] [Citation(s) in RCA: 75] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2014] [Revised: 12/20/2014] [Accepted: 12/25/2014] [Indexed: 12/22/2022]
|
162
|
Askerka M, Vinyard DJ, Wang J, Brudvig GW, Batista VS. Analysis of the Radiation-Damage-Free X-ray Structure of Photosystem II in Light of EXAFS and QM/MM Data. Biochemistry 2015; 54:1713-6. [DOI: 10.1021/acs.biochem.5b00089] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Mikhail Askerka
- Department
of Chemistry, Yale University, New Haven, Connecticut 06520-8107, United States,
| | - David J. Vinyard
- Department
of Chemistry, Yale University, New Haven, Connecticut 06520-8107, United States,
| | - Jimin Wang
- Department
of Molecular Biophysics and Biochemistry, Yale University, New Haven, Connecticut 06520-8114, United States
| | - Gary W. Brudvig
- Department
of Chemistry, Yale University, New Haven, Connecticut 06520-8107, United States,
| | - Victor S. Batista
- Department
of Chemistry, Yale University, New Haven, Connecticut 06520-8107, United States,
| |
Collapse
|
163
|
Tran R, Kern J, Hattne J, Koroidov S, Hellmich J, Alonso-Mori R, Sauter NK, Bergmann U, Messinger J, Zouni A, Yano J, Yachandra VK. The Mn₄Ca photosynthetic water-oxidation catalyst studied by simultaneous X-ray spectroscopy and crystallography using an X-ray free-electron laser. Philos Trans R Soc Lond B Biol Sci 2015; 369:20130324. [PMID: 24914152 DOI: 10.1098/rstb.2013.0324] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
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.
Collapse
Affiliation(s)
- Rosalie Tran
- Physical Biosciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Jan Kern
- Physical Biosciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA LCLS, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| | - Johan Hattne
- Physical Biosciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Sergey Koroidov
- Institutionen för Kemi, Kemiskt Biologiskt Centrum, Umeå Universitet, Umeå, Sweden
| | - Julia Hellmich
- Institut für Biologie, Humboldt-Universität Berlin, Berlin 10099, Germany
| | | | - Nicholas K Sauter
- Physical Biosciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Uwe Bergmann
- LCLS, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| | - Johannes Messinger
- Institutionen för Kemi, Kemiskt Biologiskt Centrum, Umeå Universitet, Umeå, Sweden
| | - Athina Zouni
- Institut für Biologie, Humboldt-Universität Berlin, Berlin 10099, Germany
| | - Junko Yano
- Physical Biosciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Vittal K Yachandra
- Physical Biosciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| |
Collapse
|
164
|
Krewald V, Retegan M, Cox N, Messinger J, Lubitz W, DeBeer S, Neese F, Pantazis DA. Metal oxidation states in biological water splitting. Chem Sci 2015; 6:1676-1695. [PMID: 29308133 PMCID: PMC5639794 DOI: 10.1039/c4sc03720k] [Citation(s) in RCA: 234] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2014] [Accepted: 12/31/2014] [Indexed: 12/20/2022] Open
Abstract
A central question in biological water splitting concerns the oxidation states of the manganese ions that comprise the oxygen-evolving complex of photosystem II.
A central question in biological water splitting concerns the oxidation states of the manganese ions that comprise the oxygen-evolving complex of photosystem II. Understanding the nature and order of oxidation events that occur during the catalytic cycle of five Si states (i = 0–4) is of fundamental importance both for the natural system and for artificial water oxidation catalysts. Despite the widespread adoption of the so-called “high-valent scheme”—where, for example, the Mn oxidation states in the S2 state are assigned as III, IV, IV, IV—the competing “low-valent scheme” that differs by a total of two metal unpaired electrons (i.e. III, III, III, IV in the S2 state) is favored by several recent studies for the biological catalyst. The question of the correct oxidation state assignment is addressed here by a detailed computational comparison of the two schemes using a common structural platform and theoretical approach. Models based on crystallographic constraints were constructed for all conceivable oxidation state assignments in the four (semi)stable S states of the oxygen evolving complex, sampling various protonation levels and patterns to ensure comprehensive coverage. The models are evaluated with respect to their geometric, energetic, electronic, and spectroscopic properties against available experimental EXAFS, XFEL-XRD, EPR, ENDOR and Mn K pre-edge XANES data. New 2.5 K 55Mn ENDOR data of the S2 state are also reported. Our results conclusively show that the entire S state phenomenology can only be accommodated within the high-valent scheme by adopting a single motif and protonation pattern that progresses smoothly from S0 (III, III, III, IV) to S3 (IV, IV, IV, IV), satisfying all experimental constraints and reproducing all observables. By contrast, it was impossible to construct a consistent cycle based on the low-valent scheme for all S states. Instead, the low-valent models developed here may provide new insight into the over-reduced S states and the states involved in the assembly of the catalytically active water oxidizing cluster.
Collapse
Affiliation(s)
- Vera Krewald
- Max Planck Institute for Chemical Energy Conversion , Stiftstr. 34-38 , 45470 Mülheim an der Ruhr , Germany .
| | - Marius Retegan
- Max Planck Institute for Chemical Energy Conversion , Stiftstr. 34-38 , 45470 Mülheim an der Ruhr , Germany .
| | - Nicholas Cox
- Max Planck Institute for Chemical Energy Conversion , Stiftstr. 34-38 , 45470 Mülheim an der Ruhr , Germany .
| | - Johannes Messinger
- Department of Chemistry , Chemical Biological Center (KBC) , Umeå University , 90187 Umeå , Sweden
| | - Wolfgang Lubitz
- Max Planck Institute for Chemical Energy Conversion , Stiftstr. 34-38 , 45470 Mülheim an der Ruhr , Germany .
| | - Serena DeBeer
- Max Planck Institute for Chemical Energy Conversion , Stiftstr. 34-38 , 45470 Mülheim an der Ruhr , Germany .
| | - Frank Neese
- Max Planck Institute for Chemical Energy Conversion , Stiftstr. 34-38 , 45470 Mülheim an der Ruhr , Germany .
| | - Dimitrios A Pantazis
- Max Planck Institute for Chemical Energy Conversion , Stiftstr. 34-38 , 45470 Mülheim an der Ruhr , Germany .
| |
Collapse
|
165
|
Vinyard DJ, Brudvig GW. Insights into substrate binding to the oxygen-evolving complex of photosystem II from ammonia inhibition studies. Biochemistry 2015; 54:622-8. [PMID: 25531753 DOI: 10.1021/bi5014134] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Water oxidation in Photosystem II occurs at the oxygen-evolving complex (OEC), which cycles through distinct intermediates, S0-S4. The inhibitor ammonia selectively binds to the S2 state at an unresolved site that is not competitive with substrate water. By monitoring the yields of flash-induced oxygen production, we show that ammonia decreases the net efficiency of OEC turnover and slows the decay kinetics of S2 to S1. The temperature dependence of biphasic S2 decay kinetics provides activation energies that do not vary in control and ammonia conditions. We interpret our data in the broader context of previous studies by introducing a kinetic model for both the formation and decay of ammonia-bound S2. The model predicts ammonia binds to S2 rapidly (t1/2 = 1 ms) with a large equilibrium constant. This finding implies that ammonia decreases the reduction potential of S2 by at least 2.7 kcal mol(-1) (>120 mV), which is not consistent with ammonia substitution of a terminal water ligand of Mn(IV). Instead, these data support the proposal that ammonia binds as a bridging ligand between two Mn atoms. Implications for the mechanism of O-O bond formation are discussed.
Collapse
Affiliation(s)
- David J Vinyard
- Department of Chemistry, Yale University , New Haven, Connecticut 06520-8107, United States
| | | |
Collapse
|
166
|
Abstract
Nature relies on a unique and intricate biochemical setup to achieve sunlight-driven water splitting. Combined experimental and computational efforts have produced significant insights into the structural and functional principles governing the operation of the water-oxidizing enzyme Photosystem II in general, and of the oxygen-evolving manganese-calcium cluster at its active site in particular. Here we review the most important aspects of biological water oxidation, emphasizing current knowledge on the organization of the enzyme, the geometric and electronic structure of the catalyst, and the role of calcium and chloride cofactors. The combination of recent experimental work on the identification of possible substrate sites with computational modeling have considerably limited the possible mechanistic pathways for the critical O-O bond formation step. Taken together, the key features and principles of natural photosynthesis may serve as inspiration for the design, development, and implementation of artificial systems.
Collapse
|
167
|
Shen JR. The Structure of Photosystem II and the Mechanism of Water Oxidation in Photosynthesis. ANNUAL REVIEW OF PLANT BIOLOGY 2015; 66:23-48. [PMID: 25746448 DOI: 10.1146/annurev-arplant-050312-120129] [Citation(s) in RCA: 453] [Impact Index Per Article: 50.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Oxygenic photosynthesis forms the basis of aerobic life on earth by converting light energy into biologically useful chemical energy and by splitting water to generate molecular oxygen. The water-splitting and oxygen-evolving reaction is catalyzed by photosystem II (PSII), a huge, multisubunit membrane-protein complex located in the thylakoid membranes of organisms ranging from cyanobacteria to higher plants. The structure of PSII has been analyzed at 1.9-Å resolution by X-ray crystallography, revealing a clear picture of the Mn4CaO5 cluster, the catalytic center for water oxidation. This article provides an overview of the overall structure of PSII followed by detailed descriptions of the specific structure of the Mn4CaO5 cluster and its surrounding protein environment. Based on the geometric organization of the Mn4CaO5 cluster revealed by the crystallographic analysis, in combination with the results of a vast number of experimental studies involving spectroscopic and other techniques as well as various theoretical studies, the article also discusses possible mechanisms for water splitting that are currently under consideration.
Collapse
Affiliation(s)
- Jian-Ren Shen
- Photosynthesis Research Center, Graduate School of Natural Science and Technology, Okayama University, Okayama 700-8530, Japan;
| |
Collapse
|
168
|
Li X, Siegbahn PEM. Alternative mechanisms for O2release and O–O bond formation in the oxygen evolving complex of photosystem II. Phys Chem Chem Phys 2015; 17:12168-74. [DOI: 10.1039/c5cp00138b] [Citation(s) in RCA: 84] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A new transition state for O2release has been found. An alternative, nearly competitive, mechanism for O–O bond formation is described, which is very similar to the one previously suggested.
Collapse
Affiliation(s)
- Xichen Li
- College of Chemistry
- Beijing Normal University
- Beijing
- China
- Department of Organic Chemistry
| | - Per E. M. Siegbahn
- Department of Organic Chemistry
- Arrhenius Laboratory
- Stockholm University
- Stockholm
- Sweden
| |
Collapse
|
169
|
Yano J, Kern J, Yachandra VK, Nilsson H, Koroidov S, Messinger J. Light-dependent production of dioxygen in photosynthesis. Met Ions Life Sci 2015; 15:13-43. [PMID: 25707465 PMCID: PMC4688042 DOI: 10.1007/978-3-319-12415-5_2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Oxygen, that supports all aerobic life, is abundant in the atmosphere because of its constant regeneration by photosynthetic water oxidation, which is catalyzed by a Mn₄CaO₅ cluster in photosystem II (PS II), a multi subunit membrane protein complex. X-ray and other spectroscopy studies of the electronic and geometric structure of the Mn₄CaO₅ cluster as it advances through the intermediate states have been important for understanding the mechanism of water oxidation. The results and interpretations, especially from X-ray spectroscopy studies, regarding the geometric and electronic structure and the changes as the system proceeds through the catalytic cycle will be summarized in this review. This review will also include newer methodologies in time-resolved X-ray diffraction and spectroscopy that have become available since the commissioning of the X-ray free electron laser (XFEL) and are being applied to study the oxygen-evolving complex (OEC). The femtosecond X-ray pulses of the XFEL allows us to outrun X-ray damage at room temperature, and the time-evolution of the photo-induced reaction can be probed using a visible laser-pump followed by the X-ray-probe pulse. XFELs can be used to simultaneously determine the light-induced protein dynamics using crystallography and the local chemistry that occurs at the catalytic center using X-ray spectroscopy under functional conditions. Membrane inlet mass spectrometry has been important for providing direct information about the exchange of substrate water molecules, which has a direct bearing on the mechanism of water oxidation. Moreover, it has been indispensable for the time-resolved X-ray diffraction and spectroscopy studies and will be briefly reviewed in this chapter. Given the role of PS II in maintaining life in the biosphere and the future vision of a renewable energy economy, understanding the structure and mechanism of the photosynthetic water oxidation catalyst is an important goal for the future.
Collapse
Affiliation(s)
- Junko Yano
- Physical Biosciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Jan Kern
- Physical Biosciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Vittal K. Yachandra
- Physical Biosciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Håkan Nilsson
- Department of Chemistry, Chemistry Biology Centre (KBC), Umeå University, S-90187 Umeå, Sweden
| | - Sergey Koroidov
- Department of Chemistry, Chemistry Biology Centre (KBC), Umeå University, S-90187 Umeå, Sweden
| | - Johannes Messinger
- Department of Chemistry, Chemistry Biology Centre (KBC), Umeå University, S-90187 Umeå, Sweden
| |
Collapse
|
170
|
Sugiura M, Nakamura M, Koyama K, Boussac A. Assembly of oxygen-evolving Photosystem II efficiently occurs with the apo-Cytb559 but the holo-Cytb559 accelerates the recovery of a functional enzyme upon photoinhibition. BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS 2014; 1847:276-285. [PMID: 25481108 DOI: 10.1016/j.bbabio.2014.11.009] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2014] [Revised: 11/17/2014] [Accepted: 11/26/2014] [Indexed: 10/24/2022]
Abstract
Cytb559 in Photosystem II is a heterodimeric b-type cytochrome. The subunits, PsbE and PsbF, consist each in a membrane α-helix. Roles for Cytb559 remain elusive. In Thermosynechococcus elongatus, taking advantage of the robustness of the PSII variant with PsbA3 as the D1 subunit (WT*3), 4 mutants were designed hoping to get mutants nevertheless the obligatory phototrophy of this cyanobacterium. In two of them, an axial histidine ligand of the haem-iron was substituted for either a methionine, PsbE/H23M, which could be potentially a ligand or for an alanine, PsbE/H23A, which cannot. In the other mutants, PsbE/Y19F and PsbE/T26P, the environment around PsbE/H23 was expected to be modified. From EPR, MALDI-TOF and O2 evolution activity measurements, the following results were obtained: Whereas the PsbE/H23M and PsbE/H23A mutants assemble only an apo-Cytb559 the steady-state level of active PSII was comparable to that in WT*3. The lack of the haem or, in PsbE/T26P, conversion of the high-potential into a lower potential form, slowed-down the recovery rate of the O2 activity after high-light illumination but did not affect the photoinhibition rate. This resulted in the following order for the steady-state level of active PSII centers under high-light conditions: PsbE/H23M≈PsbE/H23A<< PsbE/Y19F≤PsbE/T26P≤WT*3. These data show i) that the haem has no structural role provided that PsbE and PsbF are present, ii) a lack of correlation between the rate of photoinhibition and the Em of the haem and iii) that the holo-Cytb559 favors the recovery of a functional enzyme upon photoinhibition.
Collapse
Affiliation(s)
- Miwa Sugiura
- Proteo-Science Research Center, Ehime University, Bunkyo-cho, Matsuyama, Ehime 790-8577, Japan; Department of Chemistry, Graduate School of Science and Technology, Ehime University, Bunkyo-cho, Matsuyama, Ehime 790-8577, Japan; PRESTO, Japan Science and Technology Agency (JST), 4-1-8, Honcho, Kawauchi, Saitama 332-0012, Japan.
| | - Makoto Nakamura
- Department of Chemistry, Graduate School of Science and Technology, Ehime University, Bunkyo-cho, Matsuyama, Ehime 790-8577, Japan
| | - Kazumi Koyama
- Proteo-Science Research Center, Ehime University, Bunkyo-cho, Matsuyama, Ehime 790-8577, Japan
| | - Alain Boussac
- iBiTec-S, CNRS UMR 8221, CEA Saclay, 91191 Gif-sur-Yvette, France.
| |
Collapse
|
171
|
The D1-173 amino acid is a structural determinant of the critical interaction between D1-Tyr161 (Tyr Z ) and D1-His190 in Photosystem II. BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS 2014; 1837:1922-1931. [DOI: 10.1016/j.bbabio.2014.08.008] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2014] [Revised: 08/20/2014] [Accepted: 08/26/2014] [Indexed: 02/01/2023]
|
172
|
Sugiura M, Boussac A. Variants of photosystem II D1 protein in Thermosynechococcus elongatus. RESEARCH ON CHEMICAL INTERMEDIATES 2014. [DOI: 10.1007/s11164-014-1828-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
173
|
Kärkäs MD, Verho O, Johnston EV, Åkermark B. Artificial Photosynthesis: Molecular Systems for Catalytic Water Oxidation. Chem Rev 2014; 114:11863-2001. [DOI: 10.1021/cr400572f] [Citation(s) in RCA: 1024] [Impact Index Per Article: 102.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Markus D. Kärkäs
- Department of Organic Chemistry,
Arrhenius Laboratory, Stockholm University, SE-106 91 Stockholm, Sweden
| | - Oscar Verho
- Department of Organic Chemistry,
Arrhenius Laboratory, Stockholm University, SE-106 91 Stockholm, Sweden
| | - Eric V. Johnston
- Department of Organic Chemistry,
Arrhenius Laboratory, Stockholm University, SE-106 91 Stockholm, Sweden
| | - Björn Åkermark
- Department of Organic Chemistry,
Arrhenius Laboratory, Stockholm University, SE-106 91 Stockholm, Sweden
| |
Collapse
|
174
|
Messinger J, Debus R, Dismukes GC. Warwick Hillier: a tribute. PHOTOSYNTHESIS RESEARCH 2014; 122:1-11. [PMID: 25038923 DOI: 10.1007/s11120-014-0025-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2014] [Accepted: 06/30/2014] [Indexed: 06/03/2023]
Abstract
Warwick Hillier (October 18, 1967-January 10, 2014) made seminal contributions to our understanding of photosynthetic water oxidation employing membrane inlet mass spectrometry and FTIR spectroscopy. This article offers a collection of historical perspectives on the scientific impact of Warwick Hillier's work and tributes to the personal impact his life and ideas had on his collaborators and colleagues.
Collapse
Affiliation(s)
- Johannes Messinger
- Department of Chemistry, Chemical Biological Centre (KBC), Umeå University, Linnaeus väg 6, 90187, Umeå, Sweden
| | | | | |
Collapse
|
175
|
Wang L, Zhang C, Zhao J. Location and function of the high-affinity chloride in the oxygen-evolving complex – Implications from comparing studies on Cl−/Br−/I−-substituted photosystem II prepared using two different methods. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2014; 138:249-55. [DOI: 10.1016/j.jphotobiol.2014.05.021] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2014] [Revised: 05/22/2014] [Accepted: 05/26/2014] [Indexed: 11/17/2022]
|
176
|
Cox N, Retegan M, Neese F, Pantazis DA, Boussac A, Lubitz W. Electronic structure of the oxygen-evolving complex in photosystem II prior to O-O bond formation. Science 2014; 345:804-8. [DOI: 10.1126/science.1254910] [Citation(s) in RCA: 375] [Impact Index Per Article: 37.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
|
177
|
Taguchi T, Stone KL, Gupta R, Kaiser-Lassalle B, Yano J, Hendrich MP, Borovik A. Preparation and Properties of an Mn IV-Hydroxide Complex: Proton and Electron Transfer at a Mononuclear Manganese Site and its Relationship to the Oxygen Evolving Complex within Photosystem II. Chem Sci 2014; 5:3064-3071. [PMID: 25580212 PMCID: PMC4286883 DOI: 10.1039/c4sc00453a] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
Photosynthetic water oxidation is catalyzed by a Mn4O5Ca cluster with an unprecedented arrangement of metal ions in which a single manganese center is bonded to a distorted Mn3O4Ca cubane-like structure. Several mechanistic proposals describe the unique manganese center as a site for water binding and subsequent formation of a high valent Mn-oxo center that reacts with a M-OH unit (M = Mn or CaII) to form the O-O bond. The conversion of low valent Mn-OHn (n = 1,2) to a Mn-oxo species requires that a single manganese site be able to accommodate several oxidation states as the water ligand is deprotonated. To study these processes, the preparation and characterization of a new monomeric MnIV-OH complex is described. The MnIV-OH complex completes a series of well characterized Mn-OH and Mn-oxo complexes containing the same primary and secondary coordination spheres; this work thus demonstrates that a single ligand can support mononuclear Mn complexes spanning four different oxidation states (II through V) with oxo and hydroxo ligands that are derived from water. Moreover, we have completed a thermodynamic analysis based on this series of manganese complexes to predict the formation of high valent Mn-oxo species; we demonstrated that the conversion of a MnIV-OH species to a MnV-oxo complex would likely occur via a stepwise proton transfer-electron transfer mechanism. The large dissociation energy for the MnIVO-H bond (~95 kcal/mol) diminished the likelihood that other pathways are operative within a biological context. Furthermore, these studies showed that reactions between Mn-OH and Mn-oxo complexes lead to non-productive, one-electron processes suggesting that initial O-O bond formation with the OEC does not involve an Mn-OH unit.
Collapse
Affiliation(s)
- Taketo Taguchi
- Department of Chemistry, University of California-Irvine, 1102 Natural Sciences II, Irvine, CA 92697-2025, USA
| | - Kari L. Stone
- Department of Chemistry, Benedictine College, Lisle, IL 60532.
| | - Rupal Gupta
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, PA 15213
| | | | - Junko Yano
- Physical Biosciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720
| | | | - A.S. Borovik
- Department of Chemistry, University of California-Irvine, 1102 Natural Sciences II, Irvine, CA 92697-2025, USA
| |
Collapse
|
178
|
Substrate water exchange in photosystem II core complexes of the extremophilic red alga Cyanidioschyzon merolae. BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS 2014; 1837:1257-62. [DOI: 10.1016/j.bbabio.2014.04.001] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2014] [Revised: 03/31/2014] [Accepted: 04/01/2014] [Indexed: 10/25/2022]
|
179
|
Debus RJ. FTIR studies of metal ligands, networks of hydrogen bonds, and water molecules near the active site Mn₄CaO₅ cluster in Photosystem II. BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS 2014; 1847:19-34. [PMID: 25038513 DOI: 10.1016/j.bbabio.2014.07.007] [Citation(s) in RCA: 89] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2014] [Revised: 07/09/2014] [Accepted: 07/10/2014] [Indexed: 11/26/2022]
Abstract
The photosynthetic conversion of water to molecular oxygen is catalyzed by the Mn₄CaO₅ cluster in Photosystem II and provides nearly our entire supply of atmospheric oxygen. The Mn₄CaO₅ cluster accumulates oxidizing equivalents in response to light-driven photochemical events within Photosystem II and then oxidizes two molecules of water to oxygen. The Mn₄CaO₅ cluster converts water to oxygen much more efficiently than any synthetic catalyst because its protein environment carefully controls the cluster's reactivity at each step in its catalytic cycle. This control is achieved by precise choreography of the proton and electron transfer reactions associated with water oxidation and by careful management of substrate (water) access and proton egress. This review describes the FTIR studies undertaken over the past two decades to identify the amino acid residues that are responsible for this control and to determine the role of each. In particular, this review describes the FTIR studies undertaken to characterize the influence of the cluster's metal ligands on its activity, to delineate the proton egress pathways that link the Mn₄CaO₅ cluster with the thylakoid lumen, and to characterize the influence of specific residues on the water molecules that serve as substrate or as participants in the networks of hydrogen bonds that make up the water access and proton egress pathways. This information will improve our understanding of water oxidation by the Mn₄CaO₅ catalyst in Photosystem II and will provide insight into the design of new generations of synthetic catalysts that convert sunlight into useful forms of storable energy. This article is part of a Special Issue entitled: Vibrational spectroscopies and bioenergetic systems.
Collapse
Affiliation(s)
- Richard J Debus
- Department of Biochemistry, University of California, Riverside, Riverside, CA 92521-0129, USA.
| |
Collapse
|
180
|
Kern J, Tran R, Alonso-Mori R, Koroidov S, Echols N, Hattne J, Ibrahim M, Gul S, Laksmono H, Sierra RG, Gildea RJ, Han G, Hellmich J, Lassalle-Kaiser B, Chatterjee R, Brewster AS, Stan CA, Glöckner C, Lampe A, DiFiore D, Milathianaki D, Fry AR, Seibert MM, Koglin JE, Gallo E, Uhlig J, Sokaras D, Weng TC, Zwart PH, Skinner DE, Bogan MJ, Messerschmidt M, Glatzel P, Williams GJ, Boutet S, Adams PD, Zouni A, Messinger J, Sauter NK, Bergmann U, Yano J, Yachandra VK. Taking snapshots of photosynthetic water oxidation using femtosecond X-ray diffraction and spectroscopy. Nat Commun 2014; 5:4371. [PMID: 25006873 PMCID: PMC4151126 DOI: 10.1038/ncomms5371] [Citation(s) in RCA: 161] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2014] [Accepted: 06/10/2014] [Indexed: 01/07/2023] Open
Abstract
The dioxygen we breathe is formed by light-induced oxidation of water in photosystem II. O2 formation takes place at a catalytic manganese cluster within milliseconds after the photosystem II reaction centre is excited by three single-turnover flashes. Here we present combined X-ray emission spectra and diffraction data of 2-flash (2F) and 3-flash (3F) photosystem II samples, and of a transient 3F' state (250 μs after the third flash), collected under functional conditions using an X-ray free electron laser. The spectra show that the initial O-O bond formation, coupled to Mn reduction, does not yet occur within 250 μs after the third flash. Diffraction data of all states studied exhibit an anomalous scattering signal from Mn but show no significant structural changes at the present resolution of 4.5 Å. This study represents the initial frames in a molecular movie of the structural changes during the catalytic reaction in photosystem II.
Collapse
Affiliation(s)
- Jan Kern
- Physical Biosciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA,LCLS, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| | - Rosalie Tran
- Physical Biosciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | | | - Sergey Koroidov
- Institutionen för Kemi, Kemiskt Biologiskt Centrum, Umeå Universitet, Umeå, Sweden
| | - Nathaniel Echols
- Physical Biosciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Johan Hattne
- Physical Biosciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Mohamed Ibrahim
- Institut für Biologie, Humboldt-Universität zu Berlin, D-10099 Berlin, Germany,Max-Volmer-Laboratorium für Biophysikalische Chemie, Technische Universität, D-10623 Berlin, Germany
| | - Sheraz Gul
- Physical Biosciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Hartawan Laksmono
- PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| | - Raymond G. Sierra
- PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| | - Richard J. Gildea
- Physical Biosciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Guangye Han
- Physical Biosciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Julia Hellmich
- Institut für Biologie, Humboldt-Universität zu Berlin, D-10099 Berlin, Germany,Max-Volmer-Laboratorium für Biophysikalische Chemie, Technische Universität, D-10623 Berlin, Germany
| | | | - Ruchira Chatterjee
- Physical Biosciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Aaron S. Brewster
- Physical Biosciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Claudiu A. Stan
- PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| | - Carina Glöckner
- Max-Volmer-Laboratorium für Biophysikalische Chemie, Technische Universität, D-10623 Berlin, Germany
| | - Alyssa Lampe
- Physical Biosciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Dörte DiFiore
- Max-Volmer-Laboratorium für Biophysikalische Chemie, Technische Universität, D-10623 Berlin, Germany
| | | | - Alan R. Fry
- LCLS, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| | - M. Marvin Seibert
- LCLS, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| | - Jason E. Koglin
- LCLS, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| | - Erik Gallo
- European Synchrotron Radiation Facility, F-38043 Grenoble Cedex, France
| | - Jens Uhlig
- European Synchrotron Radiation Facility, F-38043 Grenoble Cedex, France
| | | | - Tsu-Chien Weng
- SSRL, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| | - Petrus H. Zwart
- Physical Biosciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - David E. Skinner
- National Energy Research Scientific Computing Center, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Michael J. Bogan
- LCLS, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA,PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| | | | - Pieter Glatzel
- European Synchrotron Radiation Facility, F-38043 Grenoble Cedex, France
| | - Garth J. Williams
- LCLS, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| | - Sébastien Boutet
- LCLS, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| | - Paul D. Adams
- Physical Biosciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Athina Zouni
- Institut für Biologie, Humboldt-Universität zu Berlin, D-10099 Berlin, Germany,Max-Volmer-Laboratorium für Biophysikalische Chemie, Technische Universität, D-10623 Berlin, Germany
| | - Johannes Messinger
- Institutionen för Kemi, Kemiskt Biologiskt Centrum, Umeå Universitet, Umeå, Sweden
| | - Nicholas K. Sauter
- Physical Biosciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Uwe Bergmann
- LCLS, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA,Corresponding authors. (U.B.), , (J.Y.), (V.K.Y)
| | - Junko Yano
- Physical Biosciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA,Corresponding authors. (U.B.), , (J.Y.), (V.K.Y)
| | - Vittal K. Yachandra
- Physical Biosciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA,Corresponding authors. (U.B.), , (J.Y.), (V.K.Y)
| |
Collapse
|
181
|
Substrate-water exchange in photosystem II is arrested before dioxygen formation. Nat Commun 2014; 5:4305. [PMID: 24993602 PMCID: PMC4102119 DOI: 10.1038/ncomms5305] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2013] [Accepted: 06/04/2014] [Indexed: 11/17/2022] Open
Abstract
Light-driven oxidation of water into dioxygen, catalysed by the oxygen-evolving complex (OEC) in photosystem II, is essential for life on Earth and provides the blueprint for devices for producing fuel from sunlight. Although the structure of the OEC is known at atomic level for its dark-stable state, the mechanism by which water is oxidized remains unsettled. Important mechanistic information was gained in the past two decades by mass spectrometric studies of the H218O/H216O substrate–water exchange in the four (semi) stable redox states of the OEC. However, until now such data were not attainable in the transient states formed immediately before the O–O bond formation. Using modified photosystem II complexes displaying up to 40-fold slower O2 production rates, we show here that in the transient state the substrate–water exchange is dramatically slowed as compared with the earlier S states. This further constrains the possible sites for substrate–water binding in photosystem II. The oxygen-evolving complex of photosystem II converts water into oxygen during photosynthesis, but how this process occurs is not yet fully understood. Here, the authors use modified complexes with reduced reaction rates to study the process of oxygen evolution in more detail.
Collapse
|
182
|
Noguchi T. Fourier transform infrared difference and time-resolved infrared detection of the electron and proton transfer dynamics in photosynthetic water oxidation. BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS 2014; 1847:35-45. [PMID: 24998309 DOI: 10.1016/j.bbabio.2014.06.009] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2014] [Revised: 06/25/2014] [Accepted: 06/26/2014] [Indexed: 01/15/2023]
Abstract
Photosynthetic water oxidation, which provides the electrons necessary for CO₂ reduction and releases O₂ and protons, is performed at the Mn₄CaO₅ cluster in photosystem II (PSII). In this review, studies that assessed the mechanism of water oxidation using infrared spectroscopy are summarized focusing on electron and proton transfer dynamics. Structural changes in proteins and water molecules between intermediates known as Si states (i=0-3) were detected using flash-induced Fourier transform infrared (FTIR) difference spectroscopy. Electron flow in PSII and proton release from substrate water were monitored using the infrared changes in ferricyanide as an exogenous electron acceptor and Mes buffer as a proton acceptor. Time-resolved infrared (TRIR) spectroscopy provided information on the dynamics of proton-coupled electron transfer during the S-state transitions. In particular, a drastic proton movement during the lag phase (~200μs) before electron transfer in the S3→S0 transition was detected directly by monitoring the infrared absorption of a polarizable proton in a hydrogen bond network. Furthermore, the proton release pathways in the PSII proteins were analyzed by FTIR difference measurements in combination with site-directed mutagenesis, isotopic substitutions, and quantum chemical calculations. Therefore, infrared spectroscopy is a powerful tool for understanding the molecular mechanism of photosynthetic water oxidation. This article is part of a Special Issue entitled: Vibrational spectroscopies and bioenergetic systems.
Collapse
Affiliation(s)
- Takumi Noguchi
- Division of Material Science, Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8602, Japan.
| |
Collapse
|
183
|
Pathway for Mn-cluster oxidation by tyrosine-Z in the S2 state of photosystem II. Proc Natl Acad Sci U S A 2014; 111:8723-8. [PMID: 24889635 DOI: 10.1073/pnas.1401719111] [Citation(s) in RCA: 105] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Water oxidation in photosynthetic organisms occurs through the five intermediate steps S0-S4 of the Kok cycle in the oxygen evolving complex of photosystem II (PSII). Along the catalytic cycle, four electrons are subsequently removed from the Mn4CaO5 core by the nearby tyrosine Tyr-Z, which is in turn oxidized by the chlorophyll special pair P680, the photo-induced primary donor in PSII. Recently, two Mn4CaO5 conformations, consistent with the S2 state (namely, S2(A) and S2(B) models) were suggested to exist, perhaps playing a different role within the S2-to-S3 transition. Here we report multiscale ab initio density functional theory plus U simulations revealing that upon such oxidation the relative thermodynamic stability of the two previously proposed geometries is reversed, the S2(B) state becoming the leading conformation. In this latter state a proton coupled electron transfer is spontaneously observed at ∼100 fs at room temperature dynamics. Upon oxidation, the Mn cluster, which is tightly electronically coupled along dynamics to the Tyr-Z tyrosyl group, releases a proton from the nearby W1 water molecule to the close Asp-61 on the femtosecond timescale, thus undergoing a conformational transition increasing the available space for the subsequent coordination of an additional water molecule. The results can help to rationalize previous spectroscopic experiments and confirm, for the first time to our knowledge, that the water-splitting reaction has to proceed through the S2(B) conformation, providing the basis for a structural model of the S3 state.
Collapse
|
184
|
Schraut J, Kaupp M. On Ammonia Binding to the Oxygen-Evolving Complex of Photosystem II: A Quantum Chemical Study. Chemistry 2014; 20:7300-8. [DOI: 10.1002/chem.201304464] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2013] [Revised: 03/20/2014] [Indexed: 11/11/2022]
|
185
|
Debus RJ. Evidence from FTIR Difference Spectroscopy That D1-Asp61 Influences the Water Reactions of the Oxygen-Evolving Mn4CaO5 Cluster of Photosystem II. Biochemistry 2014; 53:2941-55. [DOI: 10.1021/bi500309f] [Citation(s) in RCA: 92] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Richard J. Debus
- Department of Biochemistry, University of California, Riverside, California 92521, United States
| |
Collapse
|
186
|
Yano J, Yachandra V. Mn4Ca cluster in photosynthesis: where and how water is oxidized to dioxygen. Chem Rev 2014; 114:4175-205. [PMID: 24684576 PMCID: PMC4002066 DOI: 10.1021/cr4004874] [Citation(s) in RCA: 476] [Impact Index Per Article: 47.6] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2013] [Indexed: 12/25/2022]
Affiliation(s)
- Junko Yano
- Physical Biosciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720
| | - Vittal Yachandra
- Physical Biosciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720
| |
Collapse
|
187
|
Najafpour MM, Heidari S, Amini E, Khatamian M, Carpentier R, Allakhverdiev SI. Nano-sized layered Mn oxides as promising and biomimetic water oxidizing catalysts for water splitting in artificial photosynthetic systems. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2014; 133:124-39. [DOI: 10.1016/j.jphotobiol.2014.03.005] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2014] [Revised: 03/02/2014] [Accepted: 03/07/2014] [Indexed: 01/22/2023]
|
188
|
Najafpour MM, Isaloo MA, Eaton-Rye JJ, Tomo T, Nishihara H, Satoh K, Carpentier R, Shen JR, Allakhverdiev SI. Water exchange in manganese-based water-oxidizing catalysts in photosynthetic systems: from the water-oxidizing complex in photosystem II to nano-sized manganese oxides. BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS 2014; 1837:1395-410. [PMID: 24685431 DOI: 10.1016/j.bbabio.2014.03.008] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2013] [Revised: 03/15/2014] [Accepted: 03/19/2014] [Indexed: 11/24/2022]
Abstract
The water-oxidizing complex (WOC), also known as the oxygen-evolving complex (OEC), of photosystem II in oxygenic photosynthetic organisms efficiently catalyzes water oxidation. It is, therefore, responsible for the presence of oxygen in the Earth's atmosphere. The WOC is a manganese-calcium (Mn₄CaO₅(H₂O)₄) cluster housed in a protein complex. In this review, we focus on water exchange chemistry of metal hydrates and discuss the mechanisms and factors affecting this chemical process. Further, water exchange rates for both the biological cofactor and synthetic manganese water splitting are discussed. The importance of fully unveiling the water exchange mechanism to understand the chemistry of water oxidation is also emphasized here. This article is part of a special issue entitled: photosynthesis research for sustainability: keys to produce clean energy.
Collapse
Affiliation(s)
- Mohammad Mahdi Najafpour
- Department of Chemistry, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan 45137-66731, Iran; Center of Climate Change and Global Warming, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan 45137-66731, Iran.
| | - Mohsen Abbasi Isaloo
- Department of Chemistry, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan 45137-66731, Iran
| | - Julian J Eaton-Rye
- Department of Biochemistry, University of Otago, P.O. Box 56, Dunedin 9054, New Zealand
| | - Tatsuya Tomo
- Department of Biology, Faculty of Science, Tokyo University of Science, Kagurazaka 1-3, Shinjuku-ku, Tokyo 162-8601, Japan
| | - Hiroshi Nishihara
- Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Kimiyuki Satoh
- Graduate School of Natural Science and Technology, Okayama University, Okayama 700-8530, Japan; Faculty of Science, Okayama University, Okayama 700-8530, Japan
| | - Robert Carpentier
- Department de Chimie-Biologie, Université du Quebec à Trois Rivières, 3351, Boulevard des Forges, C.P. 500, Quebec G9A 5H7, Canada
| | - Jian-Ren Shen
- Graduate School of Natural Science and Technology, Okayama University, Okayama 700-8530, Japan; Faculty of Science, Okayama University, Okayama 700-8530, Japan
| | - Suleyman I Allakhverdiev
- Institute of Plant Physiology, Russian Academy of Sciences, Botanicheskaya Street 35, Moscow 127276, Russia; Institute of Basic Biological Problems, Russian Academy of Sciences, Pushchino, Moscow Region 142290, Russia.
| |
Collapse
|
189
|
Chuah WY, Stranger R, Pace RJ, Krausz E, Frankcombe TJ. Ab Initio modeling of the effect of oxidation coupled with HnO deprotonation on carboxylate ligands in Mn/Ca clusters. J Phys Chem B 2014; 118:3553-8. [PMID: 24606611 DOI: 10.1021/jp500362q] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Oxidation of some manganese complexes containing both carboxylate and water/hydroxo ligands does not result in changes to the carboxylate stretching frequencies. The water oxidizing complex of photosystem II is one motivating example. On the basis of electronic structure theory calculations, we here suggest that the deprotonation of water or hydroxo ligands minimizes changes in the vibrational frequencies of coligating carboxylates, rendering the carboxylate modes "invisible" in FTIR difference spectroscopy. This deprotonation of water/hydroxo ligands was also found to balance the redox potentials of the Mn(II)/Mn(III) and Mn(III)/Mn(IV) couples, allowing the possibility for successive manganese oxidations at a relatively constant redox potential.
Collapse
Affiliation(s)
- Wooi Yee Chuah
- Research School of Chemistry, Australian National University , ACT 0200, Australia
| | | | | | | | | |
Collapse
|
190
|
Yatabe T, Kikkawa M, Matsumoto T, Nakai H, Kaneko K, Ogo S. A model for the water-oxidation and recovery systems of the oxygen-evolving complex. Dalton Trans 2014; 43:3063-71. [PMID: 24323354 DOI: 10.1039/c3dt52846d] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We propose a model for the water-oxidation and recovery systems of the oxygen-evolving complex (OEC) of the photosystem II (PSII) enzyme. The whole system is constructed from two catalytic cycles, conducted as a tandem reaction: (i) a water-oxidation loop uses cerium(IV) ammonium nitrate as an oxidant to activate a dimanganese complex for water-oxidation and thereby liberate a molecule of O2 and (ii) a recovery loop begins with photoinhibition of the dimanganese complex but then uses O2 to reactivate the manganese centre. The net result is a catalytic water-oxidation catalyst that can use self-generated O2 for recovery.
Collapse
Affiliation(s)
- Takeshi Yatabe
- International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan.
| | | | | | | | | | | |
Collapse
|
191
|
Service RJ, Hillier W, Debus RJ. Network of Hydrogen Bonds near the Oxygen-Evolving Mn4CaO5 Cluster of Photosystem II Probed with FTIR Difference Spectroscopy. Biochemistry 2014; 53:1001-17. [DOI: 10.1021/bi401450y] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Rachel J. Service
- Department
of Biochemistry, University of California, Riverside, California 92521, United States
| | - Warwick Hillier
- Research
School of Biology, The Australian National University, Canberra, ACT 0200, Australia
| | - Richard J. Debus
- Department
of Biochemistry, University of California, Riverside, California 92521, United States
| |
Collapse
|
192
|
Pham LV, Messinger J. Electrochemically produced hydrogen peroxide affects Joliot-type oxygen-evolution measurements of photosystem II. BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS 2014; 1837:1411-6. [PMID: 24486444 DOI: 10.1016/j.bbabio.2014.01.013] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2013] [Revised: 01/18/2014] [Accepted: 01/22/2014] [Indexed: 11/19/2022]
Abstract
The main technique employed to characterize the efficiency of water-splitting in photosynthetic preparations in terms of miss and double hit parameters and for the determination of Si (i=2,3,0) state lifetimes is the measurement of flash-induced oxygen oscillation pattern on bare platinum (Joliot-type) electrodes. We demonstrate here that this technique is not innocent. Polarization of the electrode against an Ag/AgCl electrode leads to a time-dependent formation of hydrogen peroxide by two-electron reduction of dissolved oxygen continuously supplied by the flow buffer. While the miss and double hit parameters are almost unaffected by H₂O₂, a time dependent reduction of S1 to S₋₁ occurs over a time period of 20 min. The S1 reduction can be largely prevented by adding catalase or by removing O₂ from the flow buffer with N₂. Importantly, we demonstrate that even at the shortest possible polarization times (40s in our set up) the S₂ and S₀ decays are significantly accelerated by the side reaction with H₂O₂. The removal of hydrogen peroxide leads to unperturbed S₂ state data that reveal three instead of the traditionally reported two phases of decay. In addition, even under the best conditions (catalase+N₂; 40s polarization) about 4% of S₋₁ state is observed in well dark-adapted samples, likely indicating limitations of the equal fit approach. This article is part of a special issue entitled: photosynthesis research for sustainability: keys to produce clean energy.
Collapse
Affiliation(s)
- Long Vo Pham
- Department of Chemistry, Chemistry Biology Center (KBC), Umeå University, Linnaeus väg 6, SE-901 87 Umeå, Sweden
| | - Johannes Messinger
- Department of Chemistry, Chemistry Biology Center (KBC), Umeå University, Linnaeus väg 6, SE-901 87 Umeå, Sweden.
| |
Collapse
|
193
|
Sugiura M, Boussac A. Some Photosystem II properties depending on the D1 protein variants in Thermosynechococcus elongatus. BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS 2014; 1837:1427-34. [PMID: 24388918 DOI: 10.1016/j.bbabio.2013.12.011] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2013] [Revised: 12/17/2013] [Accepted: 12/25/2013] [Indexed: 10/25/2022]
Abstract
Cyanobacteria have multiple psbA genes encoding PsbA, the D1 reaction center protein of the Photosystem II complex which bears together with PsbD, the D2 protein, most of the cofactors involved in electron transfer reactions. The thermophilic cyanobacterium Thermosynechococcus elongatus has three psbA genes differently expressed depending on the environmental conditions. Among the 344 residues constituting each of the 3 possible PsbA variants there are 21 substitutions between PsbA1 and PsbA3, 31 between PsbA1 and PsbA2 and 27 between PsbA2 and PsbA3. In this review, we summarize the changes already identified in the properties of the redox cofactors depending on the D1 variant constituting Photosystem II in T. elongatus. This article is part of a special issue entitled: photosynthesis research for sustainability: keys to produce clean energy.
Collapse
Affiliation(s)
- Miwa Sugiura
- Proteo-science Research Center, Ehime University, Bunkyo-cho, Matsuyama, Ehime 790-8577, Japan; PRESTO, Japan Science and Technology Agency (JST), 4-1-8, Honcho, Kawauchi, Saitama 332-0012, Japan.
| | - Alain Boussac
- iBiTec-S, CNRS UMR 8221, CEA Saclay, 91191 Gif-sur-Yvette, France.
| |
Collapse
|
194
|
Han G, Huang Y, Koua FHM, Shen JR, Westlund PO, Messinger J. Hydration of the oxygen-evolving complex of photosystem II probed in the dark-stable S1 state using proton NMR dispersion profiles. Phys Chem Chem Phys 2014; 16:11924-35. [DOI: 10.1039/c3cp55232b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
195
|
Messinger J, Lubitz W, Shen JR. Photosynthesis: from natural to artificial. Phys Chem Chem Phys 2014; 16:11810-1. [DOI: 10.1039/c4cp90053g] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
196
|
Lohmiller T, Krewald V, Navarro MP, Retegan M, Rapatskiy L, Nowaczyk MM, Boussac A, Neese F, Lubitz W, Pantazis DA, Cox N. Structure, ligands and substrate coordination of the oxygen-evolving complex of photosystem II in the S2 state: a combined EPR and DFT study. Phys Chem Chem Phys 2014; 16:11877-92. [DOI: 10.1039/c3cp55017f] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
|
197
|
Sugiura M, Azami C, Koyama K, Rutherford AW, Rappaport F, Boussac A. Modification of the pheophytin redox potential in Thermosynechococcus elongatus Photosystem II with PsbA3 as D1. BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS 2014; 1837:139-48. [DOI: 10.1016/j.bbabio.2013.09.009] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2013] [Revised: 09/12/2013] [Accepted: 09/13/2013] [Indexed: 10/26/2022]
|
198
|
Sugiura M, Koyama K, Umena Y, Kawakami K, Shen JR, Kamiya N, Boussac A. Evidence for an Unprecedented Histidine Hydroxyl Modification on D2-His336 in Photosystem II of Thermosynechoccocus vulcanus and Thermosynechoccocus elongatus. Biochemistry 2013; 52:9426-31. [DOI: 10.1021/bi401213m] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Miwa Sugiura
- Proteo-Science
Research Center, Ehime University, Bunkyo-cho, Matsuyama, Ehime 790-8577, Japan
- PRESTO, Japan Science and Technology Agency (JST), 4-1-8 Honcho, Kawauchi, Saitama 332-0012, Japan
| | - Kazumi Koyama
- Proteo-Science
Research Center, Ehime University, Bunkyo-cho, Matsuyama, Ehime 790-8577, Japan
| | - Yasufumi Umena
- PRESTO, Japan Science and Technology Agency (JST), 4-1-8 Honcho, Kawauchi, Saitama 332-0012, Japan
- The
OUC Advanced Research Institute for Natural Science and Technology
(OCARNA), Osaka City University, 3-3-138 Sugimoto, Sumiyoshi, Osaka 558-8585, Japan
| | - Keisuke Kawakami
- The
OUC Advanced Research Institute for Natural Science and Technology
(OCARNA), Osaka City University, 3-3-138 Sugimoto, Sumiyoshi, Osaka 558-8585, Japan
| | - Jian-Ren Shen
- Photosynthesis
Research Center, Graduate School of Natural Science and Technology/Faculty
of Science, Okayama University, Tsushima-naka, Kita-ku, Okayama 700-8530, Japan
| | - Nobuo Kamiya
- The
OUC Advanced Research Institute for Natural Science and Technology
(OCARNA), Osaka City University, 3-3-138 Sugimoto, Sumiyoshi, Osaka 558-8585, Japan
- Graduate
School of Science, Osaka City University, 3-3-138 Sugimoto, Sumiyoshi, Osaka 558-8585, Japan
| | - Alain Boussac
- iBiTec-S, CNRS UMR 8221, CEA Saclay, Gif-sur-Yvette 91191, France
| |
Collapse
|
199
|
Shevela D, Messinger J. Studying the oxidation of water to molecular oxygen in photosynthetic and artificial systems by time-resolved membrane-inlet mass spectrometry. FRONTIERS IN PLANT SCIENCE 2013; 4:473. [PMID: 24324477 PMCID: PMC3840314 DOI: 10.3389/fpls.2013.00473] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2013] [Accepted: 11/01/2013] [Indexed: 05/03/2023]
Abstract
Monitoring isotopic compositions of gaseous products (e.g., H2, O2, and CO2) by time-resolved isotope-ratio membrane-inlet mass spectrometry (TR-IR-MIMS) is widely used for kinetic and functional analyses in photosynthesis research. In particular, in combination with isotopic labeling, TR-MIMS became an essential and powerful research tool for the study of the mechanism of photosynthetic water-oxidation to molecular oxygen catalyzed by the water-oxidizing complex of photosystem II. Moreover, recently, the TR-MIMS and (18)O-labeling approach was successfully applied for testing newly developed catalysts for artificial water-splitting and provided important insight about the mechanism and pathways of O2 formation. In this mini-review we summarize these results and provide a brief introduction into key aspects of the TR-MIMS technique and its perspectives for future studies of the enigmatic water-splitting chemistry.
Collapse
Affiliation(s)
- Dmitriy Shevela
- Department of Chemistry, Chemistry Biology Centre, Umeå UniversityUmeå, Sweden
| | - Johannes Messinger
- Department of Chemistry, Chemistry Biology Centre, Umeå UniversityUmeå, Sweden
| |
Collapse
|
200
|
Service RJ, Yano J, Dilbeck PL, Burnap RL, Hillier W, Debus RJ. Participation of glutamate-333 of the D1 polypeptide in the ligation of the Mn₄CaO₅ cluster in photosystem II. Biochemistry 2013; 52:8452-64. [PMID: 24168467 DOI: 10.1021/bi401339f] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
In the 1.9 Å structural model of photosystem II (PDB: 3ARC), the amino acid residue Glu333 of the D1 polypeptide coordinates to the oxygen-evolving Mn₄CaO₅ cluster. This residue appears to be highly significant in that it bridges the two Mn ions (Mn(B3) and the "dangling" Mn(A4)) that are also bridged by the oxygen atom O5. This oxygen atom has been proposed to be derived from one of two substrate water molecules and to become incorporated into the product dioxygen molecule during the final step in the catalytic cycle. In addition, the backbone nitrogen of D1-Glu333 interacts directly with a nearby Cl⁻ atom. To further explore the influence of this structurally unique residue on the properties of the Mn₄CaO₅ cluster, the D1-E333Q mutant of the cyanobacterium Synechocystis sp. PCC 6803 was characterized with a variety of biophysical and spectroscopic methods, including polarography, EPR, X-ray absorption, and FTIR difference spectroscopy. The kinetics of oxygen release in the mutant were essentially unchanged from those in wild-type. In addition, the oxygen flash yields exhibited normal period-four oscillations having normal S state parameters, although the yields were lower, indicative of the mutant's lower steady-state dioxygen evolution rate of approximately 30% compared to that of the wild-type. The S₁ state Mn-XANES and Mn-EXAFS and S₂ state multiline EPR signals of purified D1-E333Q PSII core complexes closely resembled those of wild-type, aside from having lower amplitudes. The S(n+1)-minus-S(n) FTIR difference spectra showed only minor alterations to the carbonyl, amide, and carboxylate stretching regions. However, the mutation eliminated a negative peak at 3663 cm⁻¹ in the weakly H-bonding O-H stretching region of the S₂-minus-S₁ FTIR difference spectrum and caused an approximately 9 cm⁻¹ downshift of the negative feature in this region of the S₁-minus-S₀ FTIR difference spectrum. We conclude that fully functional Mn₄CaO₅ clusters assemble in the presence of the D1-E333Q mutation but that the mutation decreases the yield of assembled clusters and alters the H-bonding properties of one or more water molecules or hydroxide groups that are located on or near the Mn₄CaO₅ cluster and that either deprotonate or form stronger hydrogen bonds during the S₀ to S₁ and S₁ to S₂ transitions.
Collapse
Affiliation(s)
- Rachel J Service
- Department of Biochemistry, University of California , Riverside California 92521, United States
| | | | | | | | | | | |
Collapse
|