1
|
Tateno A, Masuzawa K, Nagashima H, Maeda K. Anisotropic and Coherent Control of Radical Pairs by Optimized RF Fields. Int J Mol Sci 2023; 24:ijms24119700. [PMID: 37298651 DOI: 10.3390/ijms24119700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2023] [Revised: 05/30/2023] [Accepted: 05/31/2023] [Indexed: 06/12/2023] Open
Abstract
Radical pair kinetics is determined by the coherent and incoherent spin dynamics of spin pair and spin-selective chemical reactions. In a previous paper, reaction control and nuclear spin state selection by designed radiofrequency (RF) magnetic resonance was proposed. Here, we present two novel types of reaction control calculated by the local optimization method. One is anisotropic reaction control and the other is coherent path control. In both cases, the weighting parameters for the target states play an important role in the optimizing of the RF field. In the anisotropic control of radical pairs, the weighting parameters play an important role in the selection of the sub-ensemble. In coherent control, one can set the parameters for the intermediate states, and it is possible to specify the path to reach a final state by adjusting the weighting parameters. The global optimization of the weighting parameters for coherent control has been studied. These manifest calculations show the possibility of controlling the chemical reactions of radical pair intermediates in different ways.
Collapse
Affiliation(s)
- Akihiro Tateno
- Department of Chemistry, Graduate School of Science and Engineering, Saitama University, 255 Shimo-okubo, Sakura-ku, Saitama 338-8570, Japan
| | - Kenta Masuzawa
- Department of Chemistry, Graduate School of Science and Engineering, Saitama University, 255 Shimo-okubo, Sakura-ku, Saitama 338-8570, Japan
| | - Hiroki Nagashima
- Department of Chemistry, Graduate School of Science and Engineering, Saitama University, 255 Shimo-okubo, Sakura-ku, Saitama 338-8570, Japan
| | - Kiminori Maeda
- Department of Chemistry, Graduate School of Science and Engineering, Saitama University, 255 Shimo-okubo, Sakura-ku, Saitama 338-8570, Japan
| |
Collapse
|
2
|
Aiello CD, Abendroth JM, Abbas M, Afanasev A, Agarwal S, Banerjee AS, Beratan DN, Belling JN, Berche B, Botana A, Caram JR, Celardo GL, Cuniberti G, Garcia-Etxarri A, Dianat A, Diez-Perez I, Guo Y, Gutierrez R, Herrmann C, Hihath J, Kale S, Kurian P, Lai YC, Liu T, Lopez A, Medina E, Mujica V, Naaman R, Noormandipour M, Palma JL, Paltiel Y, Petuskey W, Ribeiro-Silva JC, Saenz JJ, Santos EJG, Solyanik-Gorgone M, Sorger VJ, Stemer DM, Ugalde JM, Valdes-Curiel A, Varela S, Waldeck DH, Wasielewski MR, Weiss PS, Zacharias H, Wang QH. A Chirality-Based Quantum Leap. ACS NANO 2022; 16:4989-5035. [PMID: 35318848 PMCID: PMC9278663 DOI: 10.1021/acsnano.1c01347] [Citation(s) in RCA: 61] [Impact Index Per Article: 30.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
There is increasing interest in the study of chiral degrees of freedom occurring in matter and in electromagnetic fields. Opportunities in quantum sciences will likely exploit two main areas that are the focus of this Review: (1) recent observations of the chiral-induced spin selectivity (CISS) effect in chiral molecules and engineered nanomaterials and (2) rapidly evolving nanophotonic strategies designed to amplify chiral light-matter interactions. On the one hand, the CISS effect underpins the observation that charge transport through nanoscopic chiral structures favors a particular electronic spin orientation, resulting in large room-temperature spin polarizations. Observations of the CISS effect suggest opportunities for spin control and for the design and fabrication of room-temperature quantum devices from the bottom up, with atomic-scale precision and molecular modularity. On the other hand, chiral-optical effects that depend on both spin- and orbital-angular momentum of photons could offer key advantages in all-optical and quantum information technologies. In particular, amplification of these chiral light-matter interactions using rationally designed plasmonic and dielectric nanomaterials provide approaches to manipulate light intensity, polarization, and phase in confined nanoscale geometries. Any technology that relies on optimal charge transport, or optical control and readout, including quantum devices for logic, sensing, and storage, may benefit from chiral quantum properties. These properties can be theoretically and experimentally investigated from a quantum information perspective, which has not yet been fully developed. There are uncharted implications for the quantum sciences once chiral couplings can be engineered to control the storage, transduction, and manipulation of quantum information. This forward-looking Review provides a survey of the experimental and theoretical fundamentals of chiral-influenced quantum effects and presents a vision for their possible future roles in enabling room-temperature quantum technologies.
Collapse
Affiliation(s)
- Clarice D. Aiello
- California
NanoSystems Institute, University of California,
Los Angeles, Los Angeles, California 90095, United States
- Department
of Electrical and Computer Engineering, University of California, Los Angeles, Los Angeles, California 90095, United States
| | - John M. Abendroth
- Laboratory
for Solid State Physics, ETH Zürich, Zürich 8093, Switzerland
| | - Muneer Abbas
- Department
of Microbiology, Howard University, Washington, D.C. 20059, United States
| | - Andrei Afanasev
- Department
of Physics, George Washington University, Washington, D.C. 20052, United States
| | - Shivang Agarwal
- Department
of Electrical and Computer Engineering, University of California, Los Angeles, Los Angeles, California 90095, United States
| | - Amartya S. Banerjee
- California
NanoSystems Institute, University of California,
Los Angeles, Los Angeles, California 90095, United States
- Department
of Materials Science and Engineering, University
of California, Los Angeles, Los Angeles, California 90095, United States
| | - David N. Beratan
- Departments
of Chemistry, Biochemistry, and Physics, Duke University, Durham, North Carolina 27708, United States
| | - Jason N. Belling
- California
NanoSystems Institute, University of California,
Los Angeles, Los Angeles, California 90095, United States
- Department
of Chemistry and Biochemistry, University
of California, Los Angeles, Los Angeles, California 90095, United States
| | - Bertrand Berche
- Laboratoire
de Physique et Chimie Théoriques, UMR Université de Lorraine-CNRS, 7019 54506 Vandœuvre les
Nancy, France
| | - Antia Botana
- Department
of Physics, Arizona State University, Tempe, Arizona 85287, United States
| | - Justin R. Caram
- Department
of Chemistry and Biochemistry, University
of California, Los Angeles, Los Angeles, California 90095, United States
| | - Giuseppe Luca Celardo
- Institute
of Physics, Benemerita Universidad Autonoma
de Puebla, Apartado Postal J-48, 72570, Mexico
- Department
of Physics and Astronomy, University of
Florence, 50019 Sesto Fiorentino, Italy
| | - Gianaurelio Cuniberti
- Institute
for Materials Science and Max Bergmann Center of Biomaterials, Dresden University of Technology, 01062 Dresden, Germany
| | - Aitzol Garcia-Etxarri
- Donostia
International Physics Center, Paseo Manuel de Lardizabal 4, 20018 Donostia, San Sebastian, Spain
- IKERBASQUE,
Basque Foundation for Science, Maria Diaz de Haro 3, 48013 Bilbao, Spain
| | - Arezoo Dianat
- Institute
for Materials Science and Max Bergmann Center of Biomaterials, Dresden University of Technology, 01062 Dresden, Germany
| | - Ismael Diez-Perez
- Department
of Chemistry, Faculty of Natural and Mathematical Sciences, King’s College London, 7 Trinity Street, London SE1 1DB, United Kingdom
| | - Yuqi Guo
- School
for Engineering of Matter, Transport and Energy, Arizona State University, Tempe, Arizona 85287, United States
| | - Rafael Gutierrez
- Institute
for Materials Science and Max Bergmann Center of Biomaterials, Dresden University of Technology, 01062 Dresden, Germany
| | - Carmen Herrmann
- Department
of Chemistry, University of Hamburg, 20146 Hamburg, Germany
| | - Joshua Hihath
- Department
of Electrical and Computer Engineering, University of California, Davis, Davis, California 95616, United States
| | - Suneet Kale
- School
of Molecular Sciences, Arizona State University, Tempe, Arizona 85287, United States
| | - Philip Kurian
- Quantum
Biology Laboratory, Graduate School, Howard
University, Washington, D.C. 20059, United States
| | - Ying-Cheng Lai
- School
of Electrical, Computer and Energy Engineering, Arizona State University, Tempe, Arizona 85287, United States
| | - Tianhan Liu
- California
NanoSystems Institute, University of California,
Los Angeles, Los Angeles, California 90095, United States
- Department
of Chemistry and Biochemistry, University
of California, Los Angeles, Los Angeles, California 90095, United States
| | - Alexander Lopez
- Escuela
Superior Politécnica del Litoral, ESPOL, Campus Gustavo Galindo Km. 30.5 Vía Perimetral, PO Box 09-01-5863, Guayaquil 090902, Ecuador
| | - Ernesto Medina
- Departamento
de Física, Colegio de Ciencias e Ingeniería, Universidad San Francisco de Quito, Av. Diego de Robles
y Vía Interoceánica, Quito 170901, Ecuador
| | - Vladimiro Mujica
- School
of Molecular Sciences, Arizona State University, Tempe, Arizona 85287, United States
- Kimika
Fakultatea, Euskal Herriko Unibertsitatea, 20080 Donostia, Euskadi, Spain
| | - Ron Naaman
- Department
of Chemical and Biological Physics, Weizmann
Institute of Science, Rehovot 76100, Israel
| | - Mohammadreza Noormandipour
- Department
of Electrical and Computer Engineering, University of California, Los Angeles, Los Angeles, California 90095, United States
- TCM Group,
Cavendish Laboratory, University of Cambridge, J.J. Thomson Avenue, Cambridge CB3 0HE, United Kingdom
| | - Julio L. Palma
- Department
of Chemistry, Pennsylvania State University, Lemont Furnace, Pennsylvania 15456, United States
| | - Yossi Paltiel
- Applied
Physics Department and the Center for Nano-Science and Nano-Technology, Hebrew University of Jerusalem, Jerusalem 91904, Israel
| | - William Petuskey
- School
of Molecular Sciences, Arizona State University, Tempe, Arizona 85287, United States
| | - João Carlos Ribeiro-Silva
- Laboratory
of Genetics and Molecular Cardiology, Heart Institute, University of São Paulo Medical School, 05508-900 São
Paulo, Brazil
| | - Juan José Saenz
- Donostia
International Physics Center, Paseo Manuel de Lardizabal 4, 20018 Donostia, San Sebastian, Spain
- IKERBASQUE,
Basque Foundation for Science, Maria Diaz de Haro 3, 48013 Bilbao, Spain
| | - Elton J. G. Santos
- Institute
for Condensed Matter Physics and Complex Systems, School of Physics
and Astronomy, The University of Edinburgh, Edinburgh EH9 3FD, United Kingdom
- Higgs Centre
for Theoretical Physics, The University
of Edinburgh, Edinburgh, EH9 3FD, United Kingdom
| | - Maria Solyanik-Gorgone
- Department
of Electrical and Computer Engineering, George Washington University, Washington, D.C. 20052, United States
| | - Volker J. Sorger
- Department
of Electrical and Computer Engineering, George Washington University, Washington, D.C. 20052, United States
| | - Dominik M. Stemer
- California
NanoSystems Institute, University of California,
Los Angeles, Los Angeles, California 90095, United States
- Department
of Materials Science and Engineering, University
of California, Los Angeles, Los Angeles, California 90095, United States
| | - Jesus M. Ugalde
- Kimika
Fakultatea, Euskal Herriko Unibertsitatea, 20080 Donostia, Euskadi, Spain
| | - Ana Valdes-Curiel
- California
NanoSystems Institute, University of California,
Los Angeles, Los Angeles, California 90095, United States
- Department
of Electrical and Computer Engineering, University of California, Los Angeles, Los Angeles, California 90095, United States
| | - Solmar Varela
- School
of Chemical Sciences and Engineering, Yachay
Tech University, 100119 Urcuquí, Ecuador
| | - David H. Waldeck
- Department
of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Michael R. Wasielewski
- Department
of Chemistry, Center for Molecular Quantum Transduction, and Institute
for Sustainability and Energy at Northwestern, Northwestern University, Evanston, Illinois 60208-3113, United States
| | - Paul S. Weiss
- California
NanoSystems Institute, University of California,
Los Angeles, Los Angeles, California 90095, United States
- Department
of Materials Science and Engineering, University
of California, Los Angeles, Los Angeles, California 90095, United States
- Department
of Chemistry and Biochemistry, University
of California, Los Angeles, Los Angeles, California 90095, United States
- Department
of Bioengineering, University of California,
Los Angeles, Los Angeles, California, 90095, United States
| | - Helmut Zacharias
- Center
for Soft Nanoscience, University of Münster, 48149 Münster, Germany
| | - Qing Hua Wang
- School
for Engineering of Matter, Transport and Energy, Arizona State University, Tempe, Arizona 85287, United States
| |
Collapse
|
3
|
Tarasov VF, Jarocha LE, Avdievich NI, Forbes MDE. TREPR spectra of micelle-confined spin correlated radical pairs: I. Molecular motion and simulations. Photochem Photobiol Sci 2014; 13:439-53. [DOI: 10.1039/c3pp50328c] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
4
|
Filek M, Kościelniak J, Łabanowska M, Bednarska E, Bidzińska E. Selenium-induced protection of photosynthesis activity in rape (Brassica napus) seedlings subjected to cadmium stress. Fluorescence and EPR measurements. PHOTOSYNTHESIS RESEARCH 2010; 105:27-37. [PMID: 20407830 DOI: 10.1007/s11120-010-9551-y] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2009] [Accepted: 04/02/2010] [Indexed: 05/03/2023]
Abstract
Fluorescence and electron paramagnetic resonance measurements were used to study selenium influence on photosystem activity in rape seedlings affected by Cd stress. Water cultures containing Hoagland nutrients were supplemented with 400 microM of CdCl(2), 2 microM of Na(2)SeO(4) and a mixture of both CdCl(2) and Na(2)SeO(4). The seedlings were cultured till the first leaf reached about 1 cm in length. Cadmium-induced changes in the activity of both photosystems were partly diminished by Se presence in the nutrient medium. Electron microscopy photographs confirmed less degradation in chloroplasts of plants cultured on media containing Se. It is suggested that sucrose groups of starch, which is deposited in greater amounts in Cd-stressed plants, may act as traps for free radicals produced under those conditions.
Collapse
Affiliation(s)
- Maria Filek
- Institute of Plant Physiology, Polish Academy of Sciences, Niezapominajek 21, 30-239 Krakow, Poland.
| | | | | | | | | |
Collapse
|
5
|
Zech SG, Lubitz W, Bittl R. Pulsed EPR experiments on radical pairs in photosynthesis: Comparison of the donor-acceptor distances in photosystem I and bacterial reaction centers. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/bbpc.19961001220] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
6
|
Kothe G, Thurnauer MC. What you get out of high-time resolution electron paramagnetic resonance: example from photosynthetic bacteria. PHOTOSYNTHESIS RESEARCH 2009; 102:349-365. [PMID: 19350413 DOI: 10.1007/s11120-009-9419-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2008] [Accepted: 03/19/2009] [Indexed: 05/27/2023]
Abstract
The primary energy conversion steps of natural photosynthesis proceed via light-induced radical ion pairs as short-lived intermediates. Time-resolved electron paramagnetic resonance (EPR) experiments of photosynthetic reaction centers monitor the key charge separated state between the oxidized primary electron donor and reduced quinone acceptor, e.g., P(+)(865)Q(-)(A) of purple photosynthetic bacteria. The time-resolved EPR spectra of P(+)(865)Q(-)(A) are indicative of a spin-correlated radical pair that is created from the excited singlet state of P(865) in an ultra-fast photochemical reaction. Importantly, the spin-correlated radical pair nature of the charge separated state is a common feature of all photosynthetic reaction centers, which gives rise to several interesting spin phenomena such as quantum oscillations, observed at short delay times after optical excitation. In this review, we describe details of the quantum oscillation phenomenon and present a complete analysis of the data obtained from the charge separated state of purple bacteria, P(+)(865)Q(-)(A). The analysis and simulation of the quantum oscillations yield the three-dimensional structure of P(+)(865)Q(-)(A) in the photosynthetic membrane on a nanosecond time scale after light-induced charge separation. Comparison with crystallographic data reveals that the position of Q(-)(A) is essentially the same as in the X-ray structure. However, the head group of Q(-)(A) has undergone a 60° rotation in the ring plane relative to its orientation in the crystal structure. The results are discussed within the framework of the previously suggested conformational gating mechanism for electron transfer from Q(-)(A) to the secondary quinone acceptor Q(B).
Collapse
Affiliation(s)
- Gerd Kothe
- Department of Physical Chemistry, University of Freiburg, Albertstr. 21, 79104 Freiburg, Germany.
| | | |
Collapse
|
7
|
Srinivasan N, Golbeck JH. Protein–cofactor interactions in bioenergetic complexes: The role of the A1A and A1B phylloquinones in Photosystem I. BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS 2009; 1787:1057-88. [DOI: 10.1016/j.bbabio.2009.04.010] [Citation(s) in RCA: 97] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2009] [Revised: 04/14/2009] [Accepted: 04/22/2009] [Indexed: 10/20/2022]
|
8
|
Niklas J, Epel B, Antonkine ML, Sinnecker S, Pandelia ME, Lubitz W. Electronic Structure of the Quinone Radical Anion A1•− of Photosystem I Investigated by Advanced Pulse EPR and ENDOR Techniques. J Phys Chem B 2009; 113:10367-79. [DOI: 10.1021/jp901890z] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jens Niklas
- Max-Planck-Institut für Bioanorganische Chemie, Stiftstrasse 34-36, 45470 Mülheim/Ruhr, Germany, and Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany
| | - Boris Epel
- Max-Planck-Institut für Bioanorganische Chemie, Stiftstrasse 34-36, 45470 Mülheim/Ruhr, Germany, and Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany
| | - Mikhail L. Antonkine
- Max-Planck-Institut für Bioanorganische Chemie, Stiftstrasse 34-36, 45470 Mülheim/Ruhr, Germany, and Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany
| | - Sebastian Sinnecker
- Max-Planck-Institut für Bioanorganische Chemie, Stiftstrasse 34-36, 45470 Mülheim/Ruhr, Germany, and Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany
| | - Maria-Eirini Pandelia
- Max-Planck-Institut für Bioanorganische Chemie, Stiftstrasse 34-36, 45470 Mülheim/Ruhr, Germany, and Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany
| | - Wolfgang Lubitz
- Max-Planck-Institut für Bioanorganische Chemie, Stiftstrasse 34-36, 45470 Mülheim/Ruhr, Germany, and Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany
| |
Collapse
|
9
|
High-Time Resolution Electron Paramagnetic Resonance Study of Quantum Beat Oscillations Observed in Photosynthetic Reaction Center Proteins. BIOPHYSICAL TECHNIQUES IN PHOTOSYNTHESIS 2008. [DOI: 10.1007/978-1-4020-8250-4_15] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
|
10
|
Holzwarth AR, Müller MG, Niklas J, Lubitz W. Ultrafast transient absorption studies on photosystem I reaction centers from Chlamydomonas reinhardtii. 2: mutations near the P700 reaction center chlorophylls provide new insight into the nature of the primary electron donor. Biophys J 2006; 90:552-65. [PMID: 16258055 PMCID: PMC1367060 DOI: 10.1529/biophysj.105.059824] [Citation(s) in RCA: 106] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2005] [Accepted: 10/03/2005] [Indexed: 11/18/2022] Open
Abstract
The energy transfer and charge separation kinetics in several core Photosystem I particles of Chlamydomonas reinhardtii with point mutations around the PA and PB reaction center chlorophylls (Chls) have been studied using ultrafast transient absorption spectroscopy in the femtosecond to nanosecond time range to characterize the influence on the early electron transfer processes. The data have been analyzed in terms of kinetic compartment models. The adequate description of the transient absorption kinetics requires three different radical pairs in the time range up to approximately 100 ps. Also a charge recombination process from the first radical pair back to the excited state is present in all the mutants, as already shown previously for the wild-type (Müller, M. G., J. Niklas, W. Lubitz, and A. R. Holzwarth. 2003. Biophys. J. 85:3899-3922; and Holzwarth, A. R., M. G. Müller, J. Niklas, and W. Lubitz. 2005. J. Phys. Chem. B. 109:5903-59115). In all mutants, the primary charge separation occurs with the same effective rate constant within the error limits as in the wild-type (>>350 ns(-1)), which implies an intrinsic rate constant of charge separation of <1 ps(-1). The rate constant of the secondary electron transfer process is slowed down by a factor of approximately 2 in the mutant B-H656C, which lacks the ligand to the central metal of Chl PB. For the mutant A-T739V, which breaks the hydrogen bond to the keto carbonyl of Chl PA, only a slight slowing down of the secondary electron transfer is observed. Finally for mutant A-W679A, which has the Trp near the PA Chl replaced, either no pronounced effect or, at best, a slight increase on the secondary electron transfer rate constants is observed. The effective charge recombination rate constant is modified in all mutants to some extent, with the strongest effect observed in mutant B-H656C. Our data strongly suggest that the Chls of the PA and PB pair, constituting what is traditionally called the "primary electron donor P700", are not oxidized in the first electron transfer process, but rather only in the secondary electron transfer step. We thus propose a new electron transfer mechanism for Photosystem I where the accessory Chl(s) function as the primary electron donor(s) and the A0 Chl(s) are the primary electron acceptor(s). This new mechanism also resolves in a straightforward manner the difficulty with the previous mechanism, where an electron would have to overcome a distance of approximately 14 A in <1 ps in a single step. If interpreted within a scheme of single-sided electron transfer, our data suggest that the B-branch is the active branch, although parallel A-branch activity cannot be excluded. All the mutations do affect to a varying extent the energy difference between the reaction center excited state RC* and the first radical pair and thus affect the rate constant of charge recombination. It is interesting to note that the new mechanism proposed is in fact analogous to the electron transfer mechanism in Photosystem II, where the accessory Chl also plays the role of the primary electron donor, rather than the special Chl pair P680 (Prokhorenko, V. and A. R. Holzwarth. 2000. J. Phys. Chem. B. 104:11563-11578).
Collapse
Affiliation(s)
- Alfred R Holzwarth
- Max-Planck-Institut für Bioanorganische Chemie, D-45470 Mülheim an der Ruhr, Germany.
| | | | | | | |
Collapse
|
11
|
Link G, Poluektov OG, Utschig LM, Lalevée J, Yago T, Weidner JU, Thurnauer MC, Kothe G. Structural organization in photosynthetic proteins as studied by high-field EPR of spin-correlated radical pair states. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2005; 43 Spec no.:S103-9. [PMID: 16235208 DOI: 10.1002/mrc.1678] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
We demonstrate the potential of high-field (HF) time-resolved electron paramagnetic resonance (EPR) spectroscopy to reveal unique information about electron transfer processes and the structure of photosynthetic systems. The lineshapes and electron spin polarization (ESP) of spin-correlated radical pair (SCRP) spectra recorded with HF-EPR are very sensitive to the magnetic parameters, interactions, and geometry of the radicals in the pair. This sensitivity facilitates an analysis of more sophisticated models and methods to reveal the important relationship between structural organization and light-induced electron transfer of the photosynthetic proteins. In this review, we report on a new time-resolved HF and multi-frequency EPR approach developed in the Freiburg laboratory in cooperation with the Argonne Photosynthesis group. The method is designed to probe the geometric structure of charge separated states in the photosynthetic membrane. First, we discuss the magneto-orientation of photosynthetic cyanobacteria as revealed by time-resolved HF-EPR of SCRPs. Then, we demonstrate how the three-dimensional structure of the SCRP P700(+)A1 from photosystem I of oxygenic photosynthesis and its arrangement in the membrane is obtained from application of multi-frequency including time-resolved HF-EPR techniques.
Collapse
Affiliation(s)
- Gerhard Link
- Department of Physical Chemistry, University of Freiburg, Albertstr. 21, D-79104 Freiburg, Germany
| | | | | | | | | | | | | | | |
Collapse
|
12
|
Van Der Est A, Valieva AI, Kandrashkin YE, Shen G, Bryant DA, Golbeck JH. Removal of PsaF alters forward electron transfer in photosystem I: evidence for fast reoxidation of QK-A in subunit deletion mutants of Synechococcus sp. PCC 7002. Biochemistry 2004; 43:1264-75. [PMID: 14756562 DOI: 10.1021/bi035431j] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Recent studies of point mutations in photosystem I have suggested that the two kinetic phases of phylloquinone reoxidation represent electron transfer in the two branches of cofactors. This interpretation implies that changes in the relative amplitudes of the two kinetic phases represent a change in the extent of electron transfer in the two branches. Using time-resolved electron paramagnetic resonance (EPR), this issue is investigated in subunit deletion mutants of Synechococcus sp. PCC 7002. The spin-polarized EPR signals of P(700)(+)A(1)(-) and P(700)(+)FeS(-), both at room temperature and in frozen solution, are altered by deletion of PsaF and/or PsaE, and the differences from the wild type are much more pronounced in PS I complexes isolated from the mutants using Triton X-100 rather than n-dodecyl beta-d-maltopyranoside. The changes in the transient EPR data for the mutant complexes are consistent with a significant fraction of reaction centers showing (i) faster electron transfer from A(1)(-) to F(X), (ii) slower forward electron transfer from A(0)(-) to A(1), and (iii) slightly altered quinone hyperfine couplings, possibly as a result of a change in the hydrogen bonding. The fraction of fast electron transfer and its dependence on the isolation procedure are estimated approximately from simulations of the room temperature EPR data. The results are discussed in terms of possible models for the electron transfer. It is suggested that the detergent-induced fraction of fast electron transfer is most likely due to alteration of the environment of the quinone in the PsaA branch of cofactors and is not the result of a change in the directionality of electron transfer.
Collapse
Affiliation(s)
- Art Van Der Est
- Department of Chemistry, Brock University, 500 Glenridge Avenue, St. Catharines, Ontario, Canada L2S 3A1.
| | | | | | | | | | | |
Collapse
|
13
|
Time-Resolved High-Frequency and Multifrequency EPR Studies of Spin-Correlated Radical Pairs in Photosynthetic Reaction Center Proteins. ACTA ACUST UNITED AC 2004. [DOI: 10.1007/978-1-4757-4379-1_6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/12/2023]
|
14
|
|
15
|
|
16
|
Borovykh IV, Kulik LV, Dzuba SA, Hoff AJ. Out-of-Phase Stimulated Electron Spin−Echo Appearing in the Evolution of Spin-Correlated Photosynthetic Triplet-Radical Pairs. J Phys Chem B 2002. [DOI: 10.1021/jp0213912] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- I. V. Borovykh
- Department of Biophysics, Huygens Laboratory, Leiden University, P.O. Box 9504, 2300 RA Leiden, The Netherlands, and Institute of Chemical Kinetics and Combustion, Russian Academy of Sciences, 630090 Novosibirsk, Russia
| | - L. V. Kulik
- Department of Biophysics, Huygens Laboratory, Leiden University, P.O. Box 9504, 2300 RA Leiden, The Netherlands, and Institute of Chemical Kinetics and Combustion, Russian Academy of Sciences, 630090 Novosibirsk, Russia
| | - S. A. Dzuba
- Department of Biophysics, Huygens Laboratory, Leiden University, P.O. Box 9504, 2300 RA Leiden, The Netherlands, and Institute of Chemical Kinetics and Combustion, Russian Academy of Sciences, 630090 Novosibirsk, Russia
| | - A. J. Hoff
- Department of Biophysics, Huygens Laboratory, Leiden University, P.O. Box 9504, 2300 RA Leiden, The Netherlands, and Institute of Chemical Kinetics and Combustion, Russian Academy of Sciences, 630090 Novosibirsk, Russia
| |
Collapse
|
17
|
Pushkar YN, Zech SG, Stehlik D, Brown S, van der Est A, Zimmermann H. Orientation and Protein−Cofactor Interactions of Monosubstituted n-Alkyl Naphthoquinones in the A1 Binding Site of Photosystem I. J Phys Chem B 2002. [DOI: 10.1021/jp0265743] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | | | | | | | | | - Herbert Zimmermann
- Max-Planck Institut für medizinische Forschung, Jahnstrasse 29, D-69120 Heidelberg, Germany
| |
Collapse
|
18
|
SALIKHOV KEVM, ZECH STEPHANG, STEHLIK DIETMAR. Light induced radical pair intermediates in photosynthetic reaction centres in contact with an observer spin label: spin dynamics and effects on transient EPR spectra. Mol Phys 2002. [DOI: 10.1080/00268970110112336] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
|
19
|
KANDRASHKIN YUE, VOLLMANN W, STEHLIK D, SALIKHOV K, VAN DER EST A. The magnetic field dependence of the electron spin polarization in consecutive spin correlated radical pairs in type I photosynthetic reaction centres. Mol Phys 2002. [DOI: 10.1080/00268970110118240] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
|
20
|
Dubinski AA, Perekhodtsev GD, Poluektov OG, Rajh T, Thurnauer MC. Analytical Treatment of EPR Spectra of Weakly Coupled Spin-Correlated Radical Pairs in Disordered Solids: Application to the Charge-Separated State in TiO2 Nanoparticles. J Phys Chem B 2002. [DOI: 10.1021/jp013276h] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
21
|
|
22
|
van der Est A. Light-induced spin polarization in type I photosynthetic reaction centres. BIOCHIMICA ET BIOPHYSICA ACTA 2001; 1507:212-25. [PMID: 11687216 DOI: 10.1016/s0005-2728(01)00204-3] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The use of light-induced spin polarization to study the structure and function of type I reaction centres is reviewed. The absorption of light by these systems generates a series of sequential radical pairs, which exhibit spin polarization as a result of the correlation of the unpaired electron spins. A description of how the polarization patterns can be used to deduce the relative orientation of the radicals is given and the most important structural results from such studies on photosystem I (PS I) are summarized. Quinone exchange experiments which demonstrate the influence of protein-cofactor interactions on the polarization patterns are discussed. The results show that there are significant differences between the binding sites of the primary quinone acceptors in PS I and purple bacterial reaction centres and suggest that pi-pi interactions probably play a more important role in PS I. Studies using spin-polarized EPR transients and spectra to investigate the electron transfer pathway and kinetics are also reviewed. The results from PS I, green-sulphur bacteria and Heliobacteria are compared and the controversy surrounding the role of a quinone in the electron transfer in the latter two systems is discussed.
Collapse
Affiliation(s)
- A van der Est
- Department of Chemistry, Brock University, 500 Glenridge Avenue, L2S 3A1, St. Catharines, ON, Canada.
| |
Collapse
|
23
|
Bittl R, Zech SG. Pulsed EPR spectroscopy on short-lived intermediates in Photosystem I. BIOCHIMICA ET BIOPHYSICA ACTA 2001; 1507:194-211. [PMID: 11687215 DOI: 10.1016/s0005-2728(01)00210-9] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
The application of pulsed electron paramagnetic resonance spectroscopy on short-lived intermediates in Photosystem I is reviewed. The spin polarization in light-induced radical pairs gives rise to a phase shifted 'out-of-phase' electron spin echo signal. This echo signal shows a prominent modulation of its intensity as a function of the spacing between the two microwave pulses. Its modulation frequency is determined by the electron-electron spin couplings within the radical pair. Thereby, the measurement of the dipolar coupling gives direct information about the spin-spin distance and can therefore be used to determine cofactor distances with high precision. Application of this technique to the radical pair P(*+)(700)A(*-)(1) in Photosystem I is discussed. Moreover, if oriented samples (e.g. single crystals) are used, the angular dependence of the dipolar coupling can be used to derive the orientation of the axis connecting donor and acceptor with respect to an external (crystal) axes system. Using out-of-phase electron spin echo envelope modulation spectroscopy, the localization of the secondary acceptor quinone A(1) has become possible.
Collapse
Affiliation(s)
- R Bittl
- Max-Volmer-Institut, Technische Universität Berlin, Germany.
| | | |
Collapse
|
24
|
Abstract
Pulsed electron paramagnetic resonance (EPR) methods such as ESEEM, PELDOR, relaxation time measurements, transient EPR, high-field/high-frequency EPR, and pulsed ENDOR, have been used successfully to investigate the local structure and dynamics of paramagnetic centers in biological samples. These methods allow different contributions to the EPR spectra to be distinguished and can help unravel complicated EPR spectra consisting of overlapping resonance lines, as are often found in disordered protein samples. The basic principles, specific potentials, technical requirements, and limitations of these advanced EPR techniques will be reviewed together with recent applications to metal centers, organic radicals, and spin labels in proteins.
Collapse
Affiliation(s)
- T Prisner
- Institute for Physical and Theoretical Chemistry, J. W. Goethe-University Frankfurt, Marie-Curie-Strasse 11, Frankfurt am Main, D-60439 Germany.
| | | | | |
Collapse
|
25
|
Kandrashkin Y, van der Est A. A new approach to determining the geometry of weakly coupled radical pairs from their electron spin polarization patterns. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2001; 57:1697-1709. [PMID: 11471722 DOI: 10.1016/s1386-1425(01)00436-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Analytical expressions for the spin polarized EPR lineshapes of weakly coupled radical pairs (RPs) are derived as functions of the angles between the anisotropic g-tensors of the radicals and the vector describing the dipolar coupling. It is shown that with a singlet precursor the EPR signal of the RP can be written as a linear function of the dipolar coupling. Under these conditions, the calculated powder spectrum can be expressed as a linear combination of four powder spectra, which are independent of the geometry of the RP. To reproduce the experimental spectra the optimal set of coefficients can be found by least-squares fitting. The advantage of this approach is that the four powder spectra must only be calculated once. This treatment shows very clearly the restrictions placed on the information obtainable from such spectra. Most importantly, a unique set of angles can only be obtained if the absolute amplitude of the spectrum is known. In general, the calculated spectrum is related to the experimental spectrum by an unknown, arbitrary scaling factor. In this case, sets of angles consistent with the data are obtained. Possible strategies for obtaining unique geometric information are discussed and demonstrated with the experimental data for the state P+*(865)Q-*(A) in Zn-substituted bacterial reaction centres.
Collapse
Affiliation(s)
- Y Kandrashkin
- Department of Chemistry, Brock University, St Catharines, Ontario, Canada
| | | |
Collapse
|
26
|
Berthold T, Bechtold M, Heinen U, Link G, Poluektov O, Utschig L, Tang J, Thurnauer MC, Kothe G. Magnetic-Field-Induced Orientation of Photosynthetic Reaction Centers As Revealed by Time-Resolved W-Band EPR of Spin-Correlated Radical Pairs. J Phys Chem B 1999. [DOI: 10.1021/jp992011o] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Thomas Berthold
- Department of Physical Chemistry, University of Freiburg, Albertstraβ 21, D-79104 Freiburg, Germany, and Chemistry Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439-4831
| | - Michael Bechtold
- Department of Physical Chemistry, University of Freiburg, Albertstraβ 21, D-79104 Freiburg, Germany, and Chemistry Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439-4831
| | - Ulrich Heinen
- Department of Physical Chemistry, University of Freiburg, Albertstraβ 21, D-79104 Freiburg, Germany, and Chemistry Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439-4831
| | - Gerhard Link
- Department of Physical Chemistry, University of Freiburg, Albertstraβ 21, D-79104 Freiburg, Germany, and Chemistry Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439-4831
| | - Oleg Poluektov
- Department of Physical Chemistry, University of Freiburg, Albertstraβ 21, D-79104 Freiburg, Germany, and Chemistry Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439-4831
| | - Lisa Utschig
- Department of Physical Chemistry, University of Freiburg, Albertstraβ 21, D-79104 Freiburg, Germany, and Chemistry Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439-4831
| | - Jau Tang
- Department of Physical Chemistry, University of Freiburg, Albertstraβ 21, D-79104 Freiburg, Germany, and Chemistry Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439-4831
| | - Marion C. Thurnauer
- Department of Physical Chemistry, University of Freiburg, Albertstraβ 21, D-79104 Freiburg, Germany, and Chemistry Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439-4831
| | - Gerd Kothe
- Department of Physical Chemistry, University of Freiburg, Albertstraβ 21, D-79104 Freiburg, Germany, and Chemistry Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439-4831
| |
Collapse
|
27
|
Gardiner AT, Zech SG, MacMillan F, Käss H, Bittl R, Schlodder E, Lendzian F, Lubitz W. Electron paramagnetic resonance studies of zinc-substituted reaction centers from Rhodopseudomonas viridis. Biochemistry 1999; 38:11773-87. [PMID: 10512634 DOI: 10.1021/bi990661c] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The primary quinone acceptor radical anion Q(A)(-)(*) (a menaquinone-9) is studied in reaction centers (RCs) of Rhodopseudomonas viridis in which the high-spin non-heme Fe(2+) is replaced by diamagnetic Zn(2+). The procedure for the iron substitution, which follows the work of Debus et al. [Debus, R. J., Feher, G., and Okamura, M. Y. (1986) Biochemistry 25, 2276-2287], is described. In Rps. viridisan exchange rate of the iron of approximately 50% +/- 10% is achieved. Time-resolved optical spectroscopy shows that the ZnRCs are fully competent in charge separation and that the charge recombination times are similar to those of native RCs. The g tensor of Q(A)(-)(*) in the ZnRCs is determined by a simulation of the EPR at 34 GHz yielding g(x) = 2.00597 (5), g(y) = 2.00492 (5), and g(z) = 2.00216 (5). Comparison with a menaquinone anion radical (MQ(4)(-)(*)) dissolved in 2-propanol identifies Q(A)(-)(*) as a naphthoquinone and shows that only one tensor component (g(x)) is predominantly changed in the RC. This is attributed to interaction with the protein environment. Electron-nuclear double resonance (ENDOR) experiments at 9 GHz reveal a shift of the spin density distribution of Q(A)(-)(*) in the RC as compared with MQ(4)(-)(*) in alcoholic solution. This is ascribed to an asymmetry of the Q(A) binding site. Furthermore, a hyperfine coupling constant from an exchangeable proton is deduced and assigned to a proton in a hydrogen bond between the quinone oxygen and surrounding amino acid residues. By electron spin-echo envelope modulation (ESEEM) techniques performed on Q(A)(-)(*) in the ZnRCs, two (14)N nuclear quadrupole tensors are determined that arise from the surrounding amino acids. One nitrogen coupling is assigned to a N(delta)((1))-H of a histidine and the other to a polypeptide backbone N-H by comparison with the nuclear quadrupole couplings of respective model systems. Inspection of the X-ray structure of Rps. viridis RCs shows that His(M217) and Ala(M258) are likely candidates for the respective amino acids. The quinone should therefore be bound by two H bonds to the protein that could, however, be of different strength. An asymmetric H-bond situation has also been found for Q(A)(-)(*) in the RC of Rhodobacter sphaeroides. Time-resolved electron paramagnetic resonance (EPR) experiments are performed on the radical pair state P(960)(+) (*)Q(A)(-)(*) in ZnRCs of Rps. viridis that were treated with o-phenanthroline to block electron transfer to Q(B). The orientations of the two radicals in the radical pair obtained from transient EPR and their distance deduced from pulsed EPR (out-of-phase ESEEM) are very similar to the geometry observed for the ground state P(960)Q(A) in the X-ray structure [Lancaster, R., Michel, H. (1997) Structure 5, 1339].
Collapse
Affiliation(s)
- A T Gardiner
- Max-Volmer-Institut für Biophysikalische Chemie und Biochemie, Technische Universität Berlin, Strasse des 17 Juni 135, D-10623 Berlin, Germany
| | | | | | | | | | | | | | | |
Collapse
|
28
|
Hulsebosch RJ, Borovykh IV, Paschenko SV, Gast P, Hoff AJ. Radical Pair Dynamics and Interactions in Quinone-Reconstituted Photosynthetic Reaction Centers of Rb. sphaeroides R26: A Multifrequency Magnetic Resonance Study. J Phys Chem B 1999. [DOI: 10.1021/jp990677c] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- R. J. Hulsebosch
- Department of Biophysics, Huygens Laboratory, Leiden University, P.O. Box 9504, 2300 RA Leiden, The Netherlands
| | - I. V. Borovykh
- Department of Biophysics, Huygens Laboratory, Leiden University, P.O. Box 9504, 2300 RA Leiden, The Netherlands
| | - S. V. Paschenko
- Department of Biophysics, Huygens Laboratory, Leiden University, P.O. Box 9504, 2300 RA Leiden, The Netherlands
| | - P. Gast
- Department of Biophysics, Huygens Laboratory, Leiden University, P.O. Box 9504, 2300 RA Leiden, The Netherlands
| | - A. J. Hoff
- Department of Biophysics, Huygens Laboratory, Leiden University, P.O. Box 9504, 2300 RA Leiden, The Netherlands
| |
Collapse
|
29
|
Tang J, Utschig LM, Poluektov O, Thurnauer MC. Transient W-Band EPR Study of Sequential Electron Transfer in Photosynthetic Bacterial Reaction Centers. J Phys Chem B 1999. [DOI: 10.1021/jp990236t] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jau Tang
- Chemistry Division, Argonne National Laboratory, Argonne, Illinois 60439
| | - Lisa M. Utschig
- Chemistry Division, Argonne National Laboratory, Argonne, Illinois 60439
| | - Oleg Poluektov
- Chemistry Division, Argonne National Laboratory, Argonne, Illinois 60439
| | | |
Collapse
|
30
|
Proskuryakov I, Klenina I, Borovykh I, Gast P, Hoff A. Photoselection effects in laser flash-induced spin-polarised EPR spectra of the radical pair state [P+QA−] in Rhodobacter sphaeroides reaction centers. Chem Phys Lett 1999. [DOI: 10.1016/s0009-2614(98)01299-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
31
|
Infrared spectroscopic identification of the C–O stretching vibration associated with the tyrosyl Z⋅ and D⋅ radicals in photosystem II2Supported by NIH GM 43272 (B.A.B.), NSF MCB 94-18164 (B.A.B.), a graduate minority supplement to NIH GM 43273 (I.A.), a graduate fellowship from Committee on Institutional Cooperation, University of Minnesota (I.A.), and a summer research fellowship from Dupont, Central Research and Development, administered through the University of Minnesota (E.T.G.).2. BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS 1998. [DOI: 10.1016/s0005-2728(98)00133-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
32
|
Tang J. Structural implications of transient X-, K- and W-band EPR spectra of deuterated and protonated reaction centers of Rhodobacter sphaeroides R-26. Chem Phys Lett 1998. [DOI: 10.1016/s0009-2614(98)00484-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
33
|
Infrared spectroscopic identification of the C-O stretching vibration associated with the tyrosyl Z. and D. radicals In photosystem II. BIOCHIMICA ET BIOPHYSICA ACTA 1998; 1364:337-60. [PMID: 9630714 DOI: 10.1016/s0005-2728(98)00016-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Photosystem II (PSII) is a multisubunit complex, which catalyzes the photo-induced oxidation of water and reduction of plastoquinone. Difference Fourier-transform infrared (FT-IR) spectroscopy can be used to obtain information about the structural changes accompanying oxidation of the redox-active tyrosines, D and Z, in PSII. The focus of our work is the assignment of the 1478 cm-1 vibration, which is observable in difference infrared spectra associated with these tyrosyl radicals. The first set of FT-IR experiments is performed with continuous illumination. Use of cyanobacterial strains, in which isotopomers of tyrosine have been incorporated, supports the assignment of a positive 1478/1477 cm-1 mode to the C-O stretching vibration of the tyrosyl radicals. In negative controls, the intensity of this spectral feature decreases. The negative controls involve the use of inhibitors or site-directed mutants, in which the oxidation of Z or D is eliminated, respectively. The assignment of the 1478/1477 cm-1 mode is also based on control EPR and fluorescence measurements, which demonstrate that no detectable Fe+2QA- signal is generated under FT-IR experimental conditions. Additionally, the difference infrared spectrum, associated with formation of the S2QA- state, argues against the assignment of the positive 1478 cm-1 line to the C-O vibration of QA-. In the second set of FT-IR experiments, single turnover flashes are employed, and infrared difference spectra are recorded as a function of time after photoexcitation. Comparison to kinetic transients generated in control EPR experiments shows that the decay of the 1477 cm-1 line precisely parallels the decay of the D. EPR signal. Taken together, these two experimental approaches strongly support the assignment of a component of the 1478/1477 cm-1 vibrational lines to the C-O stretching modes of tyrosyl radicals in PSII. Possible reasons for the apparently contradictory results of Hienerwadel et al. (1996) Biochemistry 35, 15,447-15,460 and Hienerwadel et al. (1997) Biochemistry 36, 14,705-14,711 are discussed. Copyright 1998 Elsevier Science B.V. All rights reserved.
Collapse
|
34
|
Kim S, Barry BA. The protein environment surrounding tyrosyl radicals D. and Z. in photosystem II: a difference Fourier-transform infrared spectroscopic study. Biophys J 1998; 74:2588-600. [PMID: 9591683 PMCID: PMC1299599 DOI: 10.1016/s0006-3495(98)77965-2] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Photosystem II contains two redox-active tyrosine residues, termed D and Z, which have different midpoint potentials and oxidation/reduction kinetics. To understand the functional properties of redox-active tyrosines, we report a difference Fourier-transform infrared (FT-IR) spectroscopic study of these species. Vibrational spectra associated with the oxidation of each tyrosine residue are acquired; electron paramagnetic resonance (EPR) and fluorescence experiments demonstrate that there is no detectable contribution of Q(A)- to these spectra. Vibrational lines are assigned to the radicals by isotopic labeling of tyrosine. Global 15N labeling, 2H exchange, and changes in pH identify differences in the reversible interactions of the two redox-active tyrosines with N-containing, titratable amino acid side chains in their environments. To identify the amino acid residue that contributes to the spectrum of D, mutations at His189 in the D2 polypeptide were examined. Mutations at this site result in substantial changes in the spectrum of tyrosine D. Previously, mutations at the analogous histidine, His190 in the D1 polypeptide, were shown to have no significant effect on the FT-IR spectrum of tyrosine Z (Bernard, M. T., et al. 1995. J. Biol. Chem. 270:1589-1594). A disparity in the number of accessible, proton-accepting groups could influence electron transfer rates and energetics and account for functional differences between the two redox-active tyrosines.
Collapse
Affiliation(s)
- S Kim
- Department of Biochemistry, University of Minnesota, St. Paul 55108-1022, USA
| | | |
Collapse
|
35
|
Boesch SE, Wheeler RA. π-Donor Substituent Effects on Calculated Structures, Spin Properties, and Vibrations of Radical Anions of p-Chloranil, p-Fluoranil, and p-Benzoquinone. J Phys Chem A 1997. [DOI: 10.1021/jp9719974] [Citation(s) in RCA: 51] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Scott E. Boesch
- Department of Chemistry and Biochemistry, and Center for Photonic and Electronic Materials and Devices, University of Oklahoma, Norman, Oklahoma 73019-0370
| | - Ralph A. Wheeler
- Department of Chemistry and Biochemistry, and Center for Photonic and Electronic Materials and Devices, University of Oklahoma, Norman, Oklahoma 73019-0370
| |
Collapse
|
36
|
Stehlik D, Möbius K. NEW EPR METHODS FOR INVESTIGATING PHOTOPROCESSES WITH PARAMAGNETIC INTERMEDIATES. Annu Rev Phys Chem 1997; 48:745-84. [PMID: 15012455 DOI: 10.1146/annurev.physchem.48.1.745] [Citation(s) in RCA: 73] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
▪ Abstract Some of the significant advances in time-resolved multifrequency electron paramagnetic resonance (EPR) methods are reviewed, with the explicit focus on studies of light-driven processes and photoreactions in real time. Prominent examples are excited state electron transfer reactions with transient charge-separated radical pairs playing a central role. Paramagnetic intermediates and products are key functional states; thus EPR is the method of choice for their characterization. Photogenerated spin polarization and coherences as process-inherent features add the practical advantage of compensation in the trade-off between sensitivity and time resolution. Additionally, they provide detailed structural and dynamic information on the photoreactive system. Significance and specificity of the results achieved for charge separation in photosynthetic reaction centers and donor-acceptor model complexes indicate highly promising perspectives in photochemical research.
Collapse
Affiliation(s)
- D Stehlik
- Department of Physics, Free University Berlin, Arnimallee 14, D-14195 Berlin, Germany.
| | | |
Collapse
|
37
|
Dzuba S. Spin-correlated radical pairs in photosynthetic reaction centers: role of anisotropic hyperfine interaction as revealed by computational modeling. Chem Phys Lett 1997. [DOI: 10.1016/s0009-2614(97)01044-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
38
|
Zech SG, van der Est AJ, Bittl R. Measurement of cofactor distances between P700.+ and A1.- in native and quinone-substituted photosystem I using pulsed electron paramagnetic resonance spectroscopy. Biochemistry 1997; 36:9774-9. [PMID: 9245409 DOI: 10.1021/bi970754z] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The radical pair P700.+Q.- (P700 = primary electron donor, Q = quinone acceptor) in native photosystem I and in preparations in which the native acceptor (vitamin K1) is replaced by different quinones is investigated by pulsed EPR spectroscopy. In a two-pulse experiment, the light-induced radical pair causes an out-of-phase electron spin echo, showing an envelope modulation. From the modulation frequency, the dipolar coupling, and therefore the distance between the two cofactors, can be derived. The observation of nearly identical distances of about 25.4 A between P700.+ and Q.- in all preparations investigated here leads to the conclusion that the reconstituted quinones are bound to the native A1 binding pocket. Since the orientation of the reconstituted naphthoquinone relative to the axis joining P700.+ and Q*- differs drastically from that of the native vitamin K1, it cannot be bonded to the protein in the same way as the native acceptor. This implies that the function of A1 as an electron acceptor does not depend on the orientation or hydrogen bonding of the quinone.
Collapse
Affiliation(s)
- S G Zech
- Max-Volmer-Institut für Biophysikalische Chemie und Biochemie, Technische Universität Berlin, Germany
| | | | | |
Collapse
|
39
|
Boesch SE, Wheeler RA. Structures and Properties of Ubiquinone-1 and Its Radical Anion from Hybrid Hartree−Fock/Density Functional Studies. J Phys Chem A 1997. [DOI: 10.1021/jp9705840] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Scott E. Boesch
- Department of Chemistry and Biochemistry, University of Oklahoma, 620 Parrington Oval, Room 208, Norman, Oklahoma 73019
| | - Ralph A. Wheeler
- Department of Chemistry and Biochemistry, University of Oklahoma, 620 Parrington Oval, Room 208, Norman, Oklahoma 73019
| |
Collapse
|
40
|
Shoute LCT. Electron Transfer Reactions of Radical Cation and Anion of (R)-(−)-1,1‘-Binaphthyl-2,2‘-diyl Hydrogen Phosphate in Aqueous Solution. A Pulse Radiolysis Study. J Phys Chem A 1997. [DOI: 10.1021/jp9709969] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Lian C. T. Shoute
- Chemistry Division, Bhabha Atomic Research Centre, Mumbai 4000 85, India
| |
Collapse
|
41
|
Ostafin AE, Weber S. Quinone exchange at the A1 site in Photosystem I in spinach and cyanobacteria. BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS 1997. [DOI: 10.1016/s0005-2728(97)00023-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
42
|
Tang J, Thurnauer MC, Kubo A, Hara H, Kawamori A. Anomalous pulse-angle and phase dependence of Hahn’s electron spin echo and multiple-quantum echoes in a photoinduced spin-correlated radical pair. J Chem Phys 1997. [DOI: 10.1063/1.473752] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
43
|
Weber S, Kothe G, Norris JR. Transient nutation electron spin resonance spectroscopy on spin-correlated radical pairs: A theoretical analysis on hyperfine-induced nuclear modulations. J Chem Phys 1997. [DOI: 10.1063/1.473617] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
44
|
Bittl R, Zech SG. Pulsed EPR Study of Spin-Coupled Radical Pairs in Photosynthetic Reaction Centers: Measurement of the Distance Between and in Photosystem I and between and in Bacterial Reaction Centers. J Phys Chem B 1997. [DOI: 10.1021/jp962256q] [Citation(s) in RCA: 100] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Robert Bittl
- Max-Volmer-Institut für Biophysikalische Chemie und Biochemie, Technische Universität Berlin, Strasse des 17. Juni 135, 10623 Berlin, Germany
| | - Stephan G. Zech
- Max-Volmer-Institut für Biophysikalische Chemie und Biochemie, Technische Universität Berlin, Strasse des 17. Juni 135, 10623 Berlin, Germany
| |
Collapse
|
45
|
van der Est A, Prisner T, Bittl R, Fromme P, Lubitz W, Möbius K, Stehlik D. Time-Resolved X-, K-, and W-Band EPR of the Radical Pair State of Photosystem I in Comparison with in Bacterial Reaction Centers. J Phys Chem B 1997. [DOI: 10.1021/jp9622086] [Citation(s) in RCA: 108] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- A. van der Est
- Fachbereich Physik, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany, and Max Volmer Institut, Technische Universität Berlin, Strasse des 17. Juni 135, 10623 Berlin, Germany
| | - T. Prisner
- Fachbereich Physik, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany, and Max Volmer Institut, Technische Universität Berlin, Strasse des 17. Juni 135, 10623 Berlin, Germany
| | - R. Bittl
- Fachbereich Physik, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany, and Max Volmer Institut, Technische Universität Berlin, Strasse des 17. Juni 135, 10623 Berlin, Germany
| | - P. Fromme
- Fachbereich Physik, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany, and Max Volmer Institut, Technische Universität Berlin, Strasse des 17. Juni 135, 10623 Berlin, Germany
| | - W. Lubitz
- Fachbereich Physik, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany, and Max Volmer Institut, Technische Universität Berlin, Strasse des 17. Juni 135, 10623 Berlin, Germany
| | - K. Möbius
- Fachbereich Physik, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany, and Max Volmer Institut, Technische Universität Berlin, Strasse des 17. Juni 135, 10623 Berlin, Germany
| | - D. Stehlik
- Fachbereich Physik, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany, and Max Volmer Institut, Technische Universität Berlin, Strasse des 17. Juni 135, 10623 Berlin, Germany
| |
Collapse
|
46
|
Levanon H, Möbius K. Advanced EPR spectroscopy on electron transfer processes in photosynthesis and biomimetic model systems. ANNUAL REVIEW OF BIOPHYSICS AND BIOMOLECULAR STRUCTURE 1997; 26:495-540. [PMID: 9241428 DOI: 10.1146/annurev.biophys.26.1.495] [Citation(s) in RCA: 76] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
This review focuses on the recent advances in EPR spectroscopy as they are applied both to photoinduced electron transfer in the photosynthetic apparatus and to biomimetic systems. The review deals with time-resolved direct-detection cw and pulsed EPR and ENDOR methods, both at conventional bands [X-(9.5 GHz), K-(24 GHz), and Q-(35 GHz)(] and at high frequency bands (W-band, 95 GHz, and even higher frequency bands). EPR studies on photosynthetic and model systems in their doublet, triplet and radical pair states are surveyed, including their static and dynamic properties. APplications of time-resolved EPR in studying photoinduced electron and energy transfer in isotropic and anisotropic environments, and the concepts of electron spin polarization and magnetic field effects in photochemical reactions are also reviewed.
Collapse
Affiliation(s)
- H Levanon
- Department of Physical Chemistry, Hebrew University of Jerusalem, Israel
| | | |
Collapse
|
47
|
Breton J, Nabedryk E. Protein-quinone interactions in the bacterial photosynthetic reaction center: light-induced FTIR difference spectroscopy of the quinone vibrations. BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS 1996. [DOI: 10.1016/0005-2728(96)00054-0] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
|