1
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Mai M, Zazubovich V, Mansbach RA. Identification of Residues Potentially Involved in Optical Shifts in the Water-Soluble Chlorophyll a-Binding Protein through Molecular Dynamics Simulations. J Phys Chem B 2024; 128:1371-1384. [PMID: 38299975 PMCID: PMC10876061 DOI: 10.1021/acs.jpcb.3c06889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Revised: 01/15/2024] [Accepted: 01/16/2024] [Indexed: 02/02/2024]
Abstract
Reversible light and thermally induced spectral shifts are universally observed in a wide variety of pigment-protein complexes at temperatures ranging from cryogenic to ambient. In this paper, we employed large-scale molecular dynamics (MD) simulations of a prototypical pigment-protein complex to better understand these shifts at a molecular scale. Although multiple mechanisms have been proposed over the years, no verification of these proposals via MD simulations has thus far been performed; our work represents the first step in this direction. From simulations of the water-soluble chlorophyll-binding protein complex, we determined that rearrangements of long hydrogen bonds were unlikely to be the origin of the multiwell landscape features necessary to explain observed spectral shifts. We also assessed small motions of amino acid residues and identified side chain rotations of some of these residues as likely candidates for the origin of relevant multiwell landscape features. The protein free-energy landscapes associated with side chain rotations feature energy barriers of around 1100-1600 cm-1, in agreement with optical spectroscopy results, with the most promising residue type associated with experimental signatures being serine, which possesses a symmetric triple-well landscape and moment of inertia of a relevant magnitude.
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Affiliation(s)
- Martina Mai
- Department of Physics, Concordia
University, Montréal, Quebec H4B 1R6, Canada
| | - Valter Zazubovich
- Department of Physics, Concordia
University, Montréal, Quebec H4B 1R6, Canada
| | - Rachael A. Mansbach
- Department of Physics, Concordia
University, Montréal, Quebec H4B 1R6, Canada
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2
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Cherepanov DA, Neverov KV, Obukhov YN, Maleeva YV, Gostev FE, Shelaev IV, Aybush AV, Kritsky MS, Nadtochenko VA. Femtosecond Dynamics of Excited States of Chlorophyll Tetramer in Water-Soluble Chlorophyll-Binding Protein BoWSCP. BIOCHEMISTRY. BIOKHIMIIA 2023; 88:1580-1595. [PMID: 38105026 DOI: 10.1134/s0006297923100139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Revised: 09/22/2023] [Accepted: 09/22/2023] [Indexed: 12/19/2023]
Abstract
The paper reports on the absorption dynamics of chlorophyll a in a symmetric tetrameric complex of the water-soluble chlorophyll-binding protein BoWSCP. It was measured by a broadband femtosecond laser pump-probe spectroscopy within the range from 400 to 750 nm and with a time resolution of 20 fs-200 ps. When BoWSCP was excited in the region of the Soret band at a wavelength of 430 nm, nonradiative intramolecular conversion S3→S1 was observed with a characteristic time of 83 ± 9 fs. When the complex was excited in the region of the Qy band at 670 nm, relaxation transition between two excitonic states of the chlorophyll dimer was observed in the range of 105 ± 10 fs. Absorption spectra of the excited singlet states S1 and S3 of chlorophyll a were obtained. The delocalization of the excited state between exciton-coupled Chl molecules in BoWSCP tetramer changed in time and depended on the excitation energy. When BoWSCP is excited in the Soret band region, an ultrafast photochemical reaction is observed. This could result from the reduction of tryptophan in the vicinity of chlorophyll.
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Affiliation(s)
- Dmitry A Cherepanov
- Semenov Federal Research Center for Chemical Physics, Russian Academy of Sciences, Moscow, 119991, Russia.
- Belozersky Research Institute of Physical and Chemical Biology, Lomonosov Moscow State University, Moscow, 119992, Russia
| | - Konstantin V Neverov
- Bach Institute of Biochemistry, Federal Research Center "Fundamentals of Biotechnology" of the Russian Academy of Sciences, Moscow, 119071, Russia
- Faculty of Biology, Lomonosov Moscow State University, Moscow, 119991, Russia
| | - Yuriy N Obukhov
- Bach Institute of Biochemistry, Federal Research Center "Fundamentals of Biotechnology" of the Russian Academy of Sciences, Moscow, 119071, Russia
| | - Yulia V Maleeva
- Faculty of Biology, Lomonosov Moscow State University, Moscow, 119991, Russia
| | - Feodor E Gostev
- Semenov Federal Research Center for Chemical Physics, Russian Academy of Sciences, Moscow, 119991, Russia
| | - Ivan V Shelaev
- Semenov Federal Research Center for Chemical Physics, Russian Academy of Sciences, Moscow, 119991, Russia
- Belozersky Research Institute of Physical and Chemical Biology, Lomonosov Moscow State University, Moscow, 119992, Russia
| | - Arseny V Aybush
- Semenov Federal Research Center for Chemical Physics, Russian Academy of Sciences, Moscow, 119991, Russia
| | - Michail S Kritsky
- Bach Institute of Biochemistry, Federal Research Center "Fundamentals of Biotechnology" of the Russian Academy of Sciences, Moscow, 119071, Russia
| | - Victor A Nadtochenko
- Semenov Federal Research Center for Chemical Physics, Russian Academy of Sciences, Moscow, 119991, Russia.
- Faculty of Chemistry, Lomonosov Moscow State University, Moscow, 119991, Russia
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3
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Ciuti S, Agostini A, Barbon A, Bortolus M, Paulsen H, Di Valentin M, Carbonera D. Magnetophotoselection in the Investigation of Excitonically Coupled Chromophores: The Case of the Water-Soluble Chlorophyll Protein. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27123654. [PMID: 35744779 PMCID: PMC9227413 DOI: 10.3390/molecules27123654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Revised: 06/01/2022] [Accepted: 06/02/2022] [Indexed: 12/01/2022]
Abstract
A magnetophotoselection (MPS) investigation of the photoexcited triplet state of chlorophyll a both in a frozen organic solvent and in a protein environment, provided by the water-soluble chlorophyll protein (WSCP) of Lepidium virginicum, is reported. The MPS experiment combines the photoselection achieved by exciting with linearly polarized light with the magnetic selection of electron paramagnetic resonance (EPR) spectroscopy, allowing the determination of the relative orientation of the optical transition dipole moment and the zero-field splitting tensor axes in both environments. We demonstrate the robustness of the proposed methodology for a quantitative description of the excitonic interactions among pigments. The orientation of the optical transition dipole moments determined by the EPR analysis in WSCP, identified as an appropriate model system, are in excellent agreement with those calculated in the point-dipole approximation. In addition, MPS provides information on the electronic properties of the triplet state, localized on a single chlorophyll a pigment of the protein cluster, in terms of orientation of the zero-field splitting tensor axes in the molecular frame.
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Affiliation(s)
- Susanna Ciuti
- Department of Chemical Sciences, University of Padova, Via Marzolo 1, 35131 Padova, Italy; (S.C.); (A.A.); (A.B.); (M.B.)
| | - Alessandro Agostini
- Department of Chemical Sciences, University of Padova, Via Marzolo 1, 35131 Padova, Italy; (S.C.); (A.A.); (A.B.); (M.B.)
- Biology Centre, Czech Academy of Sciences, Institute of Plant Molecular Biology, Branišovská 1160/31, 370 05 České Budějovice, Czech Republic
| | - Antonio Barbon
- Department of Chemical Sciences, University of Padova, Via Marzolo 1, 35131 Padova, Italy; (S.C.); (A.A.); (A.B.); (M.B.)
| | - Marco Bortolus
- Department of Chemical Sciences, University of Padova, Via Marzolo 1, 35131 Padova, Italy; (S.C.); (A.A.); (A.B.); (M.B.)
| | - Harald Paulsen
- Institute of Molecular Physiology, Johannes Gutenberg-University of Mainz, Johann-Joachim Becher-Weg 7, 55128 Mainz, Germany;
| | - Marilena Di Valentin
- Department of Chemical Sciences, University of Padova, Via Marzolo 1, 35131 Padova, Italy; (S.C.); (A.A.); (A.B.); (M.B.)
- Correspondence: (M.D.V.); (D.C.); Tel.: +39-0498275139 (M.D.V.); +39-0498275144 (D.C.)
| | - Donatella Carbonera
- Department of Chemical Sciences, University of Padova, Via Marzolo 1, 35131 Padova, Italy; (S.C.); (A.A.); (A.B.); (M.B.)
- Correspondence: (M.D.V.); (D.C.); Tel.: +39-0498275139 (M.D.V.); +39-0498275144 (D.C.)
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4
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Srivastava A, Ahad S, Wat JH, Reppert M. Accurate prediction of mutation-induced frequency shifts in chlorophyll proteins with a simple electrostatic model. J Chem Phys 2021; 155:151102. [PMID: 34686046 DOI: 10.1063/5.0064567] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Photosynthetic pigment-protein complexes control local chlorophyll (Chl) transition frequencies through a variety of electrostatic and steric forces. Site-directed mutations can modify this local spectroscopic tuning, providing critical insight into native photosynthetic functions and offering the tantalizing prospect of creating rationally designed Chl proteins with customized optical properties. Unfortunately, at present, no proven methods exist for reliably predicting mutation-induced frequency shifts in advance, limiting the method's utility for quantitative applications. Here, we address this challenge by constructing a series of point mutants in the water-soluble chlorophyll protein of Lepidium virginicum and using them to test the reliability of a simple computational protocol for mutation-induced site energy shifts. The protocol uses molecular dynamics to prepare mutant protein structures and the charge density coupling model of Adolphs et al. [Photosynth. Res. 95, 197-209 (2008)] for site energy prediction; a graphical interface that implements the protocol automatically is published online at http://nanohub.org/tools/pigmenthunter. With the exception of a single outlier (presumably due to unexpected structural changes), we find that the calculated frequency shifts match the experiment remarkably well, with an average error of 1.6 nm over a 9 nm spread in wavelengths. We anticipate that the accuracy of the method can be improved in the future with more advanced sampling of mutant protein structures.
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Affiliation(s)
- Amit Srivastava
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, USA
| | - Safa Ahad
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, USA
| | - Jacob H Wat
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, USA
| | - Mike Reppert
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, USA
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5
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Lahav Y, Noy D, Schapiro I. Spectral tuning of chlorophylls in proteins - electrostatics vs. ring deformation. Phys Chem Chem Phys 2021; 23:6544-6551. [PMID: 33690760 DOI: 10.1039/d0cp06582j] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
In photosynthetic complexes, tuning of chlorophyll light-absorption spectra by the protein environment is crucial to their efficiency and robustness. Recombinant type II water soluble chlorophyll-binding proteins from Brassicaceae (WSCPs) are useful for studying spectral tuning mechanisms due to their symmetric homotetramer structure, and the ability to rigorously modify the chlorophyll's protein surroundings. Our previous comparison of the crystal structures of two WSCP homologues suggested that protein-induced chlorophyll ring deformation is the predominant spectral tuning mechanism. Here, we implement a more rigorous analysis based on hybrid quantum mechanics and molecular mechanics calculations to quantify the relative contributions of geometrical and electrostatic factors to the absorption spectra of WSCP-chlorophyll complexes. We show that when considering conformational dynamics, geometry distortions such as chlorophyll ring deformation accounts for about one-third of the spectral shift, whereas the direct polarization of the electron density accounts for the remaining two-thirds. From a practical perspective, protein electrostatics is easier to manipulate than chlorophyll conformations, thus, it may be more readily implemented in designing artificial protein-chlorophyll complexes.
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Affiliation(s)
- Yigal Lahav
- Fritz Haber Centre for Molecular Dynamics Research, Institute of Chemistry, Hebrew University of Jerusalem, Israel.
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6
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Reinot T, Khmelnitskiy A, Kell A, Jassas M, Jankowiak R. Exciton Lifetime Distributions and Population Dynamics in the FMO Protein Complex from Prosthecochloris aestuarii. ACS OMEGA 2021; 6:5990-6008. [PMID: 33681637 PMCID: PMC7931385 DOI: 10.1021/acsomega.1c00286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Accepted: 02/09/2021] [Indexed: 06/12/2023]
Abstract
Significant protein rearrangement upon excitation and energy transfer in Fenna-Matthews-Olson protein of Prosthecochloris aestuarii results in a modified energy landscape, which induces more changes in pigment site energies than predicted by the "standard" hole-burning theory. The energy changes are elucidated by simulations while investigating the effects of site-dependent disorder, both static (site-energy distribution widths) and dynamic (spectral density shapes). The resulting optimized site energies and their fluctuations are consistent with relative differences observed in inhomogeneous widths calculated by recent molecular dynamic simulations. Two sets of different spectral densities reveal how their shapes affect the population dynamics and distribution of exciton lifetimes. Calculations revealed the wavelength-dependent distributions of exciton lifetimes (T 1) in the femtosecond to picosecond time frame. We suggest that the calculated multimodal and asymmetric wavelength-dependent T 1 distributions offer more insight into the interpretation of resonant hole-burned (HB) spectra, kinetic traces in two-dimensional (2D) electronic spectroscopy experiments, and widely used global analyses in fitting data from transient absorption experiments.
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Affiliation(s)
- Tonu Reinot
- Department
of Chemistry, Department of Physics, Kansas State University, Manhattan, Kansas 66506, United States
| | - Anton Khmelnitskiy
- Department
of Chemistry, Department of Physics, Kansas State University, Manhattan, Kansas 66506, United States
| | - Adam Kell
- Department
of Chemistry, Department of Physics, Kansas State University, Manhattan, Kansas 66506, United States
| | - Mahboobe Jassas
- Department
of Chemistry, Department of Physics, Kansas State University, Manhattan, Kansas 66506, United States
| | - Ryszard Jankowiak
- Department
of Chemistry, Department of Physics, Kansas State University, Manhattan, Kansas 66506, United States
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7
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Ohtsuki T, Uchida A, Nishigaki A, Nagashima U, Takahashi S, Ohshima S. Excitonic Energy Level of Homo- and Hetero-Dimers and Their Composition in the Native Water-Soluble Chlorophyll Protein from Lepidium Virginicum. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2021. [DOI: 10.1246/bcsj.20200243] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Takayuki Ohtsuki
- Faculty of Science, Toho University, 2-2-1 Miyama, Funabashi, Chiba 274-8510, Japan
| | - Akira Uchida
- Faculty of Science, Toho University, 2-2-1 Miyama, Funabashi, Chiba 274-8510, Japan
| | - Atsuko Nishigaki
- Faculty of Science, Toho University, 2-2-1 Miyama, Funabashi, Chiba 274-8510, Japan
| | - Umpei Nagashima
- Graduate School of Nanobioscience, Yokohama City University, 22-2 Seto, Kanazawa, Yokohama, Kanagawa 236-0027, Japan
| | | | - Shigeru Ohshima
- Faculty of Science, Toho University, 2-2-1 Miyama, Funabashi, Chiba 274-8510, Japan
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8
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Prabahar V, Afriat-Jurnou L, Paluy I, Peleg Y, Noy D. New homologues of Brassicaceae water-soluble chlorophyll proteins shed light on chlorophyll binding, spectral tuning, and molecular evolution. FEBS J 2019; 287:991-1004. [PMID: 31549491 DOI: 10.1111/febs.15068] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Revised: 08/02/2019] [Accepted: 09/18/2019] [Indexed: 01/06/2023]
Abstract
Type-II water-soluble chlorophyll (Chl) proteins (WSCPs) of Brassicaceae are promising models for understanding how protein sequence and structure affect Chl binding and spectral tuning in photosynthetic Chl-protein complexes. However, to date, their use has been limited by the small number of known WSCPs, which also limited understanding their physiological roles. To overcome these limitations, we performed a phylogenetic analysis to compile a more comprehensive and complete set of natural type-II WSCP homologues. The identified homologues were heterologously expressed in Escherichia coli, purified, tested for assembly with chlorophylls, and spectroscopically characterized. The analyses led to the discovery of previously unrecognized type-IIa and IIb subclass WSCPs, as well as of a new subclass that did not bind chlorophylls. Further analysis by ancestral sequence reconstruction yielded sequences of putative ancestors of the three subclasses, which were subsequently recombinantly expressed in E. coli, purified and characterized. Combining the phylogenetic and spectroscopic data with molecular structural information revealed distinct Chl-binding motifs, and identified residues critically impacting spectral tuning. The distinct Chl-binding properties of the WSCP archetypes suggest that the non-Chl-binding subclass evolved from a Chl-binding ancestor that most likely lost its Chl-binding capacity upon localization in the plant tissues with low Chl content. This dual evolutionary trajectory is consistent with WSCPs association with the Kunitz-type protease inhibitors superfamily, and indications of their inhibitory activity in response to various forms of stress in plants. These findings suggest new directions for exploring the physiological roles of WSCPs and the correlation, if any, between Chl-binding and protease inhibition functionality.
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Affiliation(s)
| | - Livnat Afriat-Jurnou
- Migal-Galilee Research Institute, Kiryat Shmona, Israel.,Faculty of Sciences and Technology, Tel-Hai Academic College, Upper Galilee, Israel
| | - Irina Paluy
- Migal-Galilee Research Institute, Kiryat Shmona, Israel
| | - Yoav Peleg
- Structural Proteomics Unit (SPU), Life Sciences Core Facilities, Weizmann Institute of Science, Rehovot, Israel
| | - Dror Noy
- Migal-Galilee Research Institute, Kiryat Shmona, Israel
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9
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Zazubovich V, Jankowiak R. How Well Does the Hole-Burning Action Spectrum Represent the Site-Distribution Function of the Lowest-Energy State in Photosynthetic Pigment-Protein Complexes? J Phys Chem B 2019; 123:6007-6013. [PMID: 31265294 DOI: 10.1021/acs.jpcb.9b03806] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
For the first time, we combined Monte Carlo and nonphotochemical hole burning (NPHB) master equation approaches to allow for ultrahigh-resolution (<0.005 cm-1, smaller than the typical homogeneous line widths at 5 K) simulations of the NPHB spectra of dimers and trimers of interacting pigments. These simulations reveal significant differences between the zero-phonon hole (ZPH) action spectrum and the site-distribution function (SDF) of the lowest-energy state. The NPHB of the lowest-energy pigment, following the excitation energy transfer (EET) from the higher-energy pigments which are excited directly, results in the shifts of all excited states. These shifts affect the ZPH action spectra and EET times derived from the widths of the spectral holes burned in the donor-dominated regions. The effect is present for a broad variety of realistic antihole functions, and it is maximal at relatively low values of interpigment coupling (V ≤ 5 cm-1) where the use of the Förster approximation is justified. These findings need to be considered in interpreting various optical spectra of photosynthetic pigment-protein complexes for which SDFs (describing the inhomogeneous broadening) are often obtained directly from the ZPH action spectra. Water-soluble chlorophyll-binding protein (WSCP) was considered as an example.
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Affiliation(s)
- Valter Zazubovich
- Department of Physics , Concordia University , 7141 Sherbrooke Street West , Montreal H4B 1R6 , Quebec , Canada
| | - Ryszard Jankowiak
- Department of Chemistry , Kansas State University , Manhattan , Kansas 66506 , United States
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10
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Zhang SF, Chen Y, Xie ZX, Zhang H, Lin L, Wang DZ. Unraveling the molecular mechanism of the response to changing ambient phosphorus in the dinoflagellate Alexandrium catenella with quantitative proteomics. J Proteomics 2019; 196:141-149. [PMID: 30414514 DOI: 10.1016/j.jprot.2018.11.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Revised: 10/30/2018] [Accepted: 11/05/2018] [Indexed: 10/27/2022]
Abstract
Phosphorus (P) is a key macronutrient limiting cell growth and bloom formation of marine dinoflagellates. Physiological responses to changing ambient P have been investigated in dinoflagellates; however, the molecular mechanisms behind these responses remain limited. Here, we compared the protein expression profiles of a marine dinoflagellate Alexandrium catenella grown in inorganic P-replete, P-deficient, and inorganic- and organic-P resupplied conditions using an iTRAQ-based quantitative proteomic approach. P deficiency inhibited cell growth and enhanced alkaline phosphatase activity (APA) but had no effect on photosynthetic efficiency. After P resupply, the P-deficient cells recovered growth rapidly and APA decreased. Proteins involved in sphingolipid metabolism, organic P utilization, starch and sucrose metabolism, and photosynthesis were up-regulated in the P-deficient cells, while proteins associated with protein synthesis, nutrient assimilation and energy metabolism were down-regulated. The responses of the P-deficient A. catenella to the resupply of organic and inorganic P presented significant differences: more biological processes were enhanced in the organic P-resupplied cells than those in the inorganic P-resupplied cells; A. catenella might directly utilize G-6-P for nucleic acid synthesis through the pentose phosphate pathway. Our results indicate that A. catenella has evolved diverse adaptive strategies to ambient P deficiency and specific mechanisms to utilize dissolved organic P, which might be an important reason resulting in A. catenella bloom in the low inorganic P environment. BIOLOGICAL SIGNIFICANCE: The ability of marine dinoflagellates to utilize different phosphorus (P) species and adapt to ambient P deficiency determines their success in the ocean. In this study, we investigated the response mechanisms of a dinoflagellate Alexandrium catenella to ambient P deficiency, and resupply of inorganic- and organic-P at the proteome level. Our results indicated that A. catenella initiated multiple adaptive strategies to ambient P deficiency, e.g. utilizing nonphospholipids and glycosphingolipids instead of phospholipids, enhancing expression of acid phosphatase to utilize organic P, and reallocating intracellular energy. Proteome responses of the P-deficient A. catenella to resupply of inorganic- and organic-P differed significantly, indicating different utilization pathways of inorganic and organic P, A. catenella might directly utilize low molecular weight organic P, such as G-6-P as both P and carbon sources.
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Affiliation(s)
- Shu-Feng Zhang
- State Key Laboratory of Marine Environmental Science, College of the Environment and Ecology, Xiamen University, Xiamen, 361102, China
| | - Ying Chen
- State Key Laboratory of Marine Environmental Science, College of the Environment and Ecology, Xiamen University, Xiamen, 361102, China
| | - Zhang-Xian Xie
- State Key Laboratory of Marine Environmental Science, College of the Environment and Ecology, Xiamen University, Xiamen, 361102, China
| | - Hao Zhang
- State Key Laboratory of Marine Environmental Science, College of the Environment and Ecology, Xiamen University, Xiamen, 361102, China
| | - Lin Lin
- State Key Laboratory of Marine Environmental Science, College of the Environment and Ecology, Xiamen University, Xiamen, 361102, China
| | - Da-Zhi Wang
- State Key Laboratory of Marine Environmental Science, College of the Environment and Ecology, Xiamen University, Xiamen, 361102, China; Key Laboratory of Marine Ecology & Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China.
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11
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Agostini A, Palm DM, Paulsen H, Carbonera D. Optically Detected Magnetic Resonance of Chlorophyll Triplet States in Water-Soluble Chlorophyll Proteins from Lepidium virginicum: Evidence for Excitonic Interaction among the Four Pigments. J Phys Chem B 2018; 122:6156-6163. [DOI: 10.1021/acs.jpcb.8b01906] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Alessandro Agostini
- Department of Chemical Sciences, University of Padova, Via Marzolo 1, 35131 Padova, Italy
- Institute of Molecular Physiology, Johannes-Gutenberg University Mainz, Johannes-von-Müller-Weg 6, 55128 Mainz, Germany
| | - Daniel M. Palm
- Institute of Molecular Physiology, Johannes-Gutenberg University Mainz, Johannes-von-Müller-Weg 6, 55128 Mainz, Germany
| | - Harald Paulsen
- Institute of Molecular Physiology, Johannes-Gutenberg University Mainz, Johannes-von-Müller-Weg 6, 55128 Mainz, Germany
| | - Donatella Carbonera
- Department of Chemical Sciences, University of Padova, Via Marzolo 1, 35131 Padova, Italy
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