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Naschberger A, Mosebach L, Tobiasson V, Kuhlgert S, Scholz M, Perez-Boerema A, Ho TTH, Vidal-Meireles A, Takahashi Y, Hippler M, Amunts A. Algal photosystem I dimer and high-resolution model of PSI-plastocyanin complex. NATURE PLANTS 2022; 8:1191-1201. [PMID: 36229605 PMCID: PMC9579051 DOI: 10.1038/s41477-022-01253-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2021] [Accepted: 09/02/2022] [Indexed: 05/29/2023]
Abstract
Photosystem I (PSI) enables photo-electron transfer and regulates photosynthesis in the bioenergetic membranes of cyanobacteria and chloroplasts. Being a multi-subunit complex, its macromolecular organization affects the dynamics of photosynthetic membranes. Here we reveal a chloroplast PSI from the green alga Chlamydomonas reinhardtii that is organized as a homodimer, comprising 40 protein subunits with 118 transmembrane helices that provide scaffold for 568 pigments. Cryogenic electron microscopy identified that the absence of PsaH and Lhca2 gives rise to a head-to-head relative orientation of the PSI-light-harvesting complex I monomers in a way that is essentially different from the oligomer formation in cyanobacteria. The light-harvesting protein Lhca9 is the key element for mediating this dimerization. The interface between the monomers is lacking PsaH and thus partially overlaps with the surface area that would bind one of the light-harvesting complex II complexes in state transitions. We also define the most accurate available PSI-light-harvesting complex I model at 2.3 Å resolution, including a flexibly bound electron donor plastocyanin, and assign correct identities and orientations to all the pigments, as well as 621 water molecules that affect energy transfer pathways.
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Affiliation(s)
- Andreas Naschberger
- Science for Life Laboratory, Department of Biochemistry and Biophysics, Stockholm University, Solna, Sweden
| | - Laura Mosebach
- Institute of Plant Biology and Biotechnology, University of Münster, Münster, Germany
| | - Victor Tobiasson
- Science for Life Laboratory, Department of Biochemistry and Biophysics, Stockholm University, Solna, Sweden
| | - Sebastian Kuhlgert
- Institute of Plant Biology and Biotechnology, University of Münster, Münster, Germany
| | - Martin Scholz
- Institute of Plant Biology and Biotechnology, University of Münster, Münster, Germany
| | - Annemarie Perez-Boerema
- Science for Life Laboratory, Department of Biochemistry and Biophysics, Stockholm University, Solna, Sweden
| | - Thi Thu Hoai Ho
- Institute of Plant Biology and Biotechnology, University of Münster, Münster, Germany
- Faculty of Fisheries, University of Agriculture and Forestry, Hue University, Hue, Vietnam
| | - André Vidal-Meireles
- Institute of Plant Biology and Biotechnology, University of Münster, Münster, Germany
| | - Yuichiro Takahashi
- Research Institute for Interdisciplinary Science, Okayama University, Okayama, Japan
- Japan Science and Technology Agency-CREST, Saitama, Japan
| | - Michael Hippler
- Institute of Plant Biology and Biotechnology, University of Münster, Münster, Germany.
- Institute of Plant Science and Resources, Okayama University, Kurashiki, Japan.
| | - Alexey Amunts
- Science for Life Laboratory, Department of Biochemistry and Biophysics, Stockholm University, Solna, Sweden.
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Sharma VK, Mahammed A, Mizrahi A, Morales M, Fridman N, Gray HB, Gross Z. Dimeric Corrole Analogs of Chlorophyll Special Pairs. J Am Chem Soc 2021; 143:9450-9460. [PMID: 34014656 PMCID: PMC8249354 DOI: 10.1021/jacs.1c02362] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Chlorophyll special pairs in photosynthetic reaction centers function as both exciton acceptors and primary electron donors. Although the macrocyclic natural pigments contain Mg(II), the central metal in most synthetic analogs is Zn(II). Here we report that insertion of either Al(III) or Ga(III) into an imidazole-substituted corrole affords an exceptionally robust photoactive dimer. Notably, attractive electronic interactions between dimer subunits are relatively strong, as documented by signature changes in NMR and electronic absorption spectra, as well as by cyclic voltammetry, where two well-separated reversible redox couples were observed. EPR spectra of one-electron oxidized dimers closely mimic those of native special pairs, and strong through-space interactions between corrole subunits inferred from spectroscopic and electrochemical data are further supported by crystal structure analyses (3 Å interplanar distances, 5 Å lateral shifts, and 6 Å metal to metal distances).
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Affiliation(s)
- Vinay K. Sharma
- Schulich Faculty of Chemistry, Technion - Israel Institute of Technology, Haifa 32000, Israel
| | - Atif Mahammed
- Schulich Faculty of Chemistry, Technion - Israel Institute of Technology, Haifa 32000, Israel
| | - Amir Mizrahi
- Schulich Faculty of Chemistry, Technion - Israel Institute of Technology, Haifa 32000, Israel
- Department of Chemistry, Nuclear Research Center Negev, Beer Sheva, 9001, Israel
| | - Maryann Morales
- Beckman Institute, California Institute of Technology, Pasadena, California 91125, United States
| | - Natalia Fridman
- Schulich Faculty of Chemistry, Technion - Israel Institute of Technology, Haifa 32000, Israel
| | - Harry B. Gray
- Beckman Institute, California Institute of Technology, Pasadena, California 91125, United States
| | - Zeev Gross
- Schulich Faculty of Chemistry, Technion - Israel Institute of Technology, Haifa 32000, Israel
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3
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DFT and TD-DFT Studies of Mg-Substitution in Chlorophyll by Cr(II), Fe(II) and Ni(II). CHEMISTRY AFRICA-A JOURNAL OF THE TUNISIAN CHEMICAL SOCIETY 2018. [DOI: 10.1007/s42250-018-0003-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Bechaieb R, Ben Akacha A, Gérard H. Quantum chemistry insight into Mg-substitution in chlorophyll by toxic heavy metals: Cd, Hg and Pb. Chem Phys Lett 2016. [DOI: 10.1016/j.cplett.2016.09.053] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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5
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Ben Fredj A. Theoretical Study of the Dimerization of Chlorophyll (a) and Its Hydrates: Implication for Chlorophyll (a) Aggregation. Helv Chim Acta 2016. [DOI: 10.1002/hlca.201500027] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Bechaieb R, Fredj AB, Akacha AB, Gérard H. Interactions of copper(ii) and zinc(ii) with chlorophyll: insights from density functional theory studies. NEW J CHEM 2016. [DOI: 10.1039/c5nj03244j] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The most favored reaction of chlorophyll is computed to be substitution for Cu2+ and peripheral chelation for Zn2+.
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Affiliation(s)
- Rim Bechaieb
- Université de Tunis el Manar
- Faculté des Science de Tunis
- Laboratoire de Spectroscopie Atomique
- Moléculaire et Applications -LSAMA
- 1060 Tunis
| | - Arij B. Fredj
- Université de Tunis el Manar
- Faculté des Science de Tunis
- Laboratoire de Spectroscopie Atomique
- Moléculaire et Applications -LSAMA
- 1060 Tunis
| | - Azaiez B. Akacha
- Université de Tunis el Manar
- Faculté des Sciences de Tunis
- Département de chimie
- Laboratoire de Synthèse Organique et Hétérocyclique
- 2092 Tunis
| | - Hélène Gérard
- Sorbonne Universités
- UPMC Univ Paris 06
- UMR 7616
- Laboratoire de Chimie Théorique
- Paris
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Cabral BJC, Coutinho K, Canuto S. Born-Oppenheimer molecular dynamics and electronic properties of chlorophyll-c2 in liquid methanol. J Chem Phys 2013; 138:225102. [DOI: 10.1063/1.4808177] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Jaramillo P, Coutinho K, Cabral BJC, Canuto S. Ionization of chlorophyll-c2 in liquid methanol. Chem Phys Lett 2012. [DOI: 10.1016/j.cplett.2012.07.040] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Fredj AB, Ruiz-López MF. Theoretical Study of Chlorophyll a Hydrates Formation in Aqueous Organic Solvents. J Phys Chem B 2009; 114:681-7. [DOI: 10.1021/jp909380t] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Arij Ben Fredj
- Equipe de Chimie et Biochimie Théoriques, SRSMC, Nancy-University, BP 70239, 54506 Vandoeuvre-lès-Nancy, France, and Laboratoire de Spectroscopie Atomique, Moléculaire et Applications, Faculté des Sciences de Tunis, 1060 Tunis, Tunisia
| | - Manuel F. Ruiz-López
- Equipe de Chimie et Biochimie Théoriques, SRSMC, Nancy-University, BP 70239, 54506 Vandoeuvre-lès-Nancy, France, and Laboratoire de Spectroscopie Atomique, Moléculaire et Applications, Faculté des Sciences de Tunis, 1060 Tunis, Tunisia
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Sobolewski AL, Domcke W. Ab initio study of the energetics of photoinduced electron and proton transfer processes in a bio-inspired model of photochemical water splitting. Chem Phys Lett 2009. [DOI: 10.1016/j.cplett.2009.07.098] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Ben Fredj A, Ben Lakhdar Z, Ruiz-López M. Six-coordination in Chlorophylls: The fundamental role of dispersion energy. Chem Phys Lett 2009. [DOI: 10.1016/j.cplett.2009.03.025] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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