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Cherepanov DA, Milanovsky GE, Neverov KV, Obukhov YN, Maleeva YV, Aybush AV, Kritsky MS, Nadtochenko VA. Exciton interactions of chlorophyll tetramer in water-soluble chlorophyll-binding protein BoWSCP. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 309:123847. [PMID: 38217986 DOI: 10.1016/j.saa.2024.123847] [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: 07/31/2023] [Revised: 01/02/2024] [Accepted: 01/03/2024] [Indexed: 01/15/2024]
Abstract
The exciton interaction of four chlorophyll a (Chl a) molecules in a symmetrical tetrameric complex of the water-soluble chlorophyll-binding protein BoWSCP was analyzed in the pH range of 3-11. Exciton splitting ΔE = 232 ± 2 cm-1 of the Qy band of Chl a into two subcomponents with relative intensities of 78.1 ± 0.7 % and 21.9 ± 0.7 % was determined by a joint decomposition of the absorption and circular dichroism spectra into Gaussian functions. The exciton coupling parameters were calculated based on the BoWSCP atomic structure in three approximations: the point dipole model, the distributed atomic monopoles, and direct ab initio calculations in the TDDFT/PCM approximation. The Coulomb interactions of monomers were calculated within the continuum model using three values of optical permittivity. The models based on the properties of free Chl a in solution suffer from significant errors both in estimating the absolute value of the exciton interaction and in the relative intensity of exciton transitions. Calculations within the TDDFT/PCM approximation reproduce the experimentally determined parameters of the exciton splitting and the relative intensities of the exciton bands. The following factors of pigment-protein and pigment-pigment interactions were examined: deviation of the macrocycle geometry from the planar conformation of free Chl; the formation of hydrogen bonds between the macrocycle and water molecules; the overlap of wave functions of monomers at close distances. The most significant factor is the geometrical deformation of the porphyrin macrocycle, which leads to an increase in the dipole moment of Chl monomer from 5.5 to 6.9 D and to a rotation of the dipole moment by 15° towards the cyclopentane ring. The contributions of resonant charge-transfer states to the wave functions of the Chl dimer were determined and the transition dipole moments of the symmetric and antisymmetric charge-transfer states were estimated.
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Affiliation(s)
- D A Cherepanov
- N.N. Semenov Federal Research Center for Chemical Physics, Russian Academy of Sciences, 119991 Moscow, Kosygina str., 4, Russian Federation; A.N. Belozersky Institute Of Physico-Chemical Biology, Moscow State University, 119992 Moscow, Leninskye gory, 1b.40, Russian Federation.
| | - G E Milanovsky
- A.N. Belozersky Institute Of Physico-Chemical Biology, Moscow State University, 119992 Moscow, Leninskye gory, 1b.40, Russian Federation
| | - K V Neverov
- A.N. Bach Institute of Biochemistry, Federal Research Center "Fundamentals of Biotechnology", Russian Academy of Sciences", 119071 Moscow, Leninsky prospect, 33b.2, Russian Federation; Faculty of Biology, Moscow State University, 119234 Moscow, Leninskye gory, 1b.12, Russian Federation
| | - Yu N Obukhov
- A.N. Bach Institute of Biochemistry, Federal Research Center "Fundamentals of Biotechnology", Russian Academy of Sciences", 119071 Moscow, Leninsky prospect, 33b.2, Russian Federation
| | - Yu V Maleeva
- Faculty of Biology, Moscow State University, 119234 Moscow, Leninskye gory, 1b.12, Russian Federation
| | - A V Aybush
- N.N. Semenov Federal Research Center for Chemical Physics, Russian Academy of Sciences, 119991 Moscow, Kosygina str., 4, Russian Federation
| | - M S Kritsky
- A.N. Bach Institute of Biochemistry, Federal Research Center "Fundamentals of Biotechnology", Russian Academy of Sciences", 119071 Moscow, Leninsky prospect, 33b.2, Russian Federation
| | - V A Nadtochenko
- N.N. Semenov Federal Research Center for Chemical Physics, Russian Academy of Sciences, 119991 Moscow, Kosygina str., 4, Russian Federation; Department of Chemistry, Moscow State University, 119991 Moscow, Leninskye gory, 1b.3, Russian Federation
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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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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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Effects of low-molecular-weight polyols on the hydration status of the light-harvesting complex 2 from Rhodobacter sphaeroides 2.4.1. Photochem Photobiol Sci 2021; 20:627-637. [PMID: 33913116 DOI: 10.1007/s43630-021-00046-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Accepted: 04/20/2021] [Indexed: 10/21/2022]
Abstract
Low-molecular-weight (MW) polyols are organic osmolytes influencing water activity. We have investigated the effects of polyol molecules (glycerol and sorbitol) on the optical and triplet excitation dynamics of light-harvesting complex 2 (LH2) from Rhodobacter (Rba.) sphaeroides in buffer-detergent solutions. The resonance Raman spectroscopy demonstrated that, on increasing glycerol and sorbitol volume fractions ranging from 0 to 80% (v/v) (accompanied by the decreasing water activities), the planar and all-trans conformation of carotenoids (Crts) remained unchanged, and the bacteriochlorophyll a (BChl) Qy absorption intensity decreased. The B850 fluorescence amplitude elevated in the 20-80% v/v sorbitol and 20-40% v/v glycerol solution, but decreased in 80% v/v glycerol solution. The change of 3[Crt*-BChl] interaction bands caused by 3Crt*-BChl interaction had no obvious correlation with water activities against polyol volume fractions, which are rationalized by the water activity sensitive of C- and N-termini of protein which binding with BChls. The results suggest that Rba. sphaeroides LH2 is more sensitive to low-molecular-weight polyols compared with that of the thermophiles purple bacterium Thermochromatium (Tch.) tepidum we had investigated before.
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Hoffmann JF, Roos AH, Schmitt FJ, Hinderberger D, Binder WH. Fluorescent and Water Dispersible Single-Chain Nanoparticles: Core-Shell Structured Compartmentation. Angew Chem Int Ed Engl 2021; 60:7820-7827. [PMID: 33373475 PMCID: PMC8048794 DOI: 10.1002/anie.202015179] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Revised: 12/13/2020] [Indexed: 12/20/2022]
Abstract
Single-chain nanoparticles (SCNPs) are highly versatile structures resembling proteins, able to function as catalysts or biomedical delivery systems. Based on their synthesis by single-chain collapse into nanoparticular systems, their internal structure is complex, resulting in nanosized domains preformed during the crosslinking process. In this study we present proof of such nanocompartments within SCNPs via a combination of electron paramagnetic resonance (EPR) and fluorescence spectroscopy. A novel strategy to encapsulate labels within these water dispersible SCNPs with hydrodynamic radii of ≈5 nm is presented, based on amphiphilic polymers with additional covalently bound labels, attached via the copper catalyzed azide/alkyne "click" reaction (CuAAC). A detailed profile of the interior of the SCNPs and the labels' microenvironment was obtained via electron paramagnetic resonance (EPR) experiments, followed by an assessment of their photophysical properties.
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Affiliation(s)
- Justus F Hoffmann
- Macromolecular Chemistry, Institute of Chemistry, Faculty of Natural Science II (Chemistry, Physics and Mathematics), Martin Luther University Halle-Wittenberg, von-Danckelmann-Platz 4, 06120, Halle, Germany
| | - Andreas H Roos
- Physical Chemistry, Institute of Chemistry, Faculty of Natural Science II (Chemistry, Physics and Mathematics), Martin Luther University Halle-Wittenberg, von-Danckelmann-Platz 4, 06120, Halle, Germany
| | - Franz-Josef Schmitt
- Institute of Physics, Faculty of Natural Science II (Chemistry, Physics and Mathematics), Martin Luther University Halle-Wittenberg, von-Danckelmann-Platz 3, 06120, Halle, Germany
| | - Dariush Hinderberger
- Physical Chemistry, Institute of Chemistry, Faculty of Natural Science II (Chemistry, Physics and Mathematics), Martin Luther University Halle-Wittenberg, von-Danckelmann-Platz 4, 06120, Halle, Germany
| | - Wolfgang H Binder
- Macromolecular Chemistry, Institute of Chemistry, Faculty of Natural Science II (Chemistry, Physics and Mathematics), Martin Luther University Halle-Wittenberg, von-Danckelmann-Platz 4, 06120, Halle, Germany
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6
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Hoffmann JF, Roos AH, Schmitt F, Hinderberger D, Binder WH. Fluorescent and Water Dispersible Single‐Chain Nanoparticles: Core–Shell Structured Compartmentation. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202015179] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Justus F. Hoffmann
- Macromolecular Chemistry Institute of Chemistry, Faculty of Natural Science II (Chemistry, Physics and Mathematics) Martin Luther University Halle-Wittenberg von-Danckelmann-Platz 4 06120 Halle Germany
| | - Andreas H. Roos
- Physical Chemistry Institute of Chemistry Faculty of Natural Science II (Chemistry, Physics and Mathematics) Martin Luther University Halle-Wittenberg von-Danckelmann-Platz 4 06120 Halle Germany
| | - Franz‐Josef Schmitt
- Institute of Physics, Faculty of Natural Science II (Chemistry, Physics and Mathematics) Martin Luther University Halle-Wittenberg von-Danckelmann-Platz 3 06120 Halle Germany
| | - Dariush Hinderberger
- Physical Chemistry Institute of Chemistry Faculty of Natural Science II (Chemistry, Physics and Mathematics) Martin Luther University Halle-Wittenberg von-Danckelmann-Platz 4 06120 Halle Germany
| | - Wolfgang H. Binder
- Macromolecular Chemistry Institute of Chemistry, Faculty of Natural Science II (Chemistry, Physics and Mathematics) Martin Luther University Halle-Wittenberg von-Danckelmann-Platz 4 06120 Halle Germany
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7
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Maleeva YV, Neverov KV, Obukhov YN, Kritsky MS. Water Soluble Chlorophyll-Binding Proteins of Plants: Structure, Properties and Functions. Mol Biol 2019. [DOI: 10.1134/s0026893319060128] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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8
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Adolphs J, Maier F, Renger T. Wavelength-Dependent Exciton-Vibrational Coupling in the Water-Soluble Chlorophyll Binding Protein Revealed by Multilevel Theory of Difference Fluorescence Line-Narrowing. J Phys Chem B 2018; 122:8891-8899. [PMID: 30183300 DOI: 10.1021/acs.jpcb.8b08410] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
One of the most powerful line-narrowing techniques used to unravel the homogeneous lineshapes of inhomogeneously broadened systems is difference fluorescence line-narrowing spectroscopy. When this spectroscopy was applied to multichromophoric systems so far, the spectra were analyzed by an effective two-level system approach, composed of the electronic ground state and the lowest exciton state. An effective Huang-Rhys factor was assigned for the coupling of this state to the vibrations. Here, we extend this approach by including a multilevel line shape theory, which takes into account the excitonic coupling between pigments and thereby the effect of the delocalization of the excited states explicitly. In this way, it becomes possible to extract the spectral density of the local exciton-vibrational coupling. The theory is applied to the recombinant water-soluble chlorophyll binding protein reconstituted with chlorophyll a or b and reveals a significant decrease of the Huang-Rhys factor of the local exciton-vibrational coupling with decreasing transition energy of the chlorophylls. This decrease could be due to the increase in steric interactions reducing the flexibility of the environment and red-shifting the site energy of the pigments.
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Affiliation(s)
- Julian Adolphs
- Institute for Theoretical Physics , Johannes Kepler University Linz , Altenberger Strasse 69 , 4040 Linz , Austria
| | - Franziska Maier
- Institute for Theoretical Physics , Johannes Kepler University Linz , Altenberger Strasse 69 , 4040 Linz , Austria
| | - Thomas Renger
- Institute for Theoretical Physics , Johannes Kepler University Linz , Altenberger Strasse 69 , 4040 Linz , Austria
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9
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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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10
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Agostini A, Palm DM, Paulsen H, Carbonera D. Accessibility of Protein-Bound Chlorophylls Probed by Dynamic Electron Polarization. J Phys Chem Lett 2018; 9:672-676. [PMID: 29361219 DOI: 10.1021/acs.jpclett.7b03428] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The possibility to probe the accessibility of sites of proteins represents an important point to explore their interactions with specific substrates in solution. The dynamic electron polarization of nitroxide radicals induced by excited triplet states of organic molecules is a phenomenon that is known to occur in aqueous solutions. The interaction within the radical-triplet pair causes a net emissive dynamic electron polarization of the nitroxide radical, that can be detected by means of time-resolved electron paramagnetic resonance (TR-EPR) spectroscopy. We have exploited this effect to prove the accessibility of chlorophylls bound to a protein, namely, the water-soluble chlorophyll protein WSCP. The results have important implications for topological studies in macromolecules.
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Affiliation(s)
- Alessandro Agostini
- Department of Chemical Sciences, University of Padova , Via Marzolo 1, 35131 Padova, Italy
- Department of Molecular Physiology, Johannes-Gutenberg University Mainz , Johannes-von-Müller-Weg 6, 55128 Mainz, Germany
| | - Daniel M Palm
- Department of Molecular Physiology, Johannes-Gutenberg University Mainz , Johannes-von-Müller-Weg 6, 55128 Mainz, Germany
| | - Harald Paulsen
- Department 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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11
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Agostini A, Palm DM, Schmitt FJ, Albertini M, Valentin MD, Paulsen H, Carbonera D. An unusual role for the phytyl chains in the photoprotection of the chlorophylls bound to Water-Soluble Chlorophyll-binding Proteins. Sci Rep 2017; 7:7504. [PMID: 28790428 PMCID: PMC5548782 DOI: 10.1038/s41598-017-07874-6] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2017] [Accepted: 06/30/2017] [Indexed: 01/16/2023] Open
Abstract
Water-Soluble Chlorophyll Proteins (WSCPs) from Brassicaceae are non-photosynthetic proteins which tetramerize upon binding four chlorophyll (Chl) molecules. The bound Chls are highly photostable, despite the lack of bound carotenoids known, in Chl-containing photosynthetic proteins, to act as singlet oxygen and Chl triplet (3Chl) quenchers. Although the physiological function of WSCPs is still unclear, it is likely to be related to their biochemical stability and their resistance to photodegradation. To get insight into the origin of this photostability, the properties of the 3Chl generated in WSCPs upon illumination were investigated. We found that, unlike the excited singlet states, which are excitonic states, the triplet state is localized on a single Chl molecule. Moreover, the lifetime of the 3Chl generated in WSCPs is comparable to that observed in other Chl-containing systems and is reduced in presence of oxygen. In contrast to previous observations, we found that WSCP actually photosensitizes singlet oxygen with an efficiency comparable to that of Chl in organic solvent. We demonstrated that the observed resistance to photooxidation depends on the conformation of the phytyl moieties, which in WSCP are interposed between the rings of Chl dimers, hindering the access of singlet oxygen to the oxidizable sites of the pigments.
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Affiliation(s)
- Alessandro Agostini
- Department of Chemical Sciences, University of Padova, via Marzolo 1, 35131, Padova, Italy
- Institute of Molecular Physiology, Johannes Gutenberg-University, Johannes-von-Müller-Weg 6, 55128, Mainz, Germany
| | - Daniel M Palm
- Institute of Molecular Physiology, Johannes Gutenberg-University, Johannes-von-Müller-Weg 6, 55128, Mainz, Germany
| | - Franz-Josef Schmitt
- Institute of Chemistry, Technische Universität Berlin, Straße des 17, Juni 135, 10623, Berlin, Germany
| | - Marco Albertini
- Department of Chemical Sciences, University of Padova, via Marzolo 1, 35131, Padova, Italy
| | - Marilena Di Valentin
- Department of Chemical Sciences, University of Padova, via Marzolo 1, 35131, Padova, Italy
| | - Harald Paulsen
- Institute of Molecular Physiology, Johannes Gutenberg-University, 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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12
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Shi Y, Yu J, Yu LJ, Wang P, Fu LM, Zhang JP, Wang-Otomo ZY. Dependence of the hydration status of bacterial light-harvesting complex 2 on polyol cosolvents. Photochem Photobiol Sci 2017; 16:795-807. [DOI: 10.1039/c6pp00270f] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Tch. tepidumLH2 hydration correlates with water activity in water–polyol binary solvents as sensitively probed by near infrared electronic spectra and characteristic triplet carotenoid–bacteriochlorophyll interaction bands.
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Affiliation(s)
- Ying Shi
- Department of Chemistry
- Renmin University of China
- Beijing 1000872
- P. R. China
| | - Jie Yu
- Department of Chemistry
- Renmin University of China
- Beijing 1000872
- P. R. China
| | - Long-Jiang Yu
- Faculty of Science
- Ibaraki University
- Mito 310-8512
- Japan
| | - Peng Wang
- Department of Chemistry
- Renmin University of China
- Beijing 1000872
- P. R. China
| | - Li-Min Fu
- Department of Chemistry
- Renmin University of China
- Beijing 1000872
- P. R. China
| | - Jian-Ping Zhang
- Department of Chemistry
- Renmin University of China
- Beijing 1000872
- P. R. China
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Siggel U, Schmitt FJ, Messinger J. Gernot Renger (1937-2013): his life, Max-Volmer Laboratory, and photosynthesis research. PHOTOSYNTHESIS RESEARCH 2016; 129:109-127. [PMID: 27312337 DOI: 10.1007/s11120-016-0280-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 06/02/2016] [Indexed: 06/06/2023]
Abstract
Gernot Renger (October 23, 1937-January 12, 2013), one of the leading biophysicists in the field of photosynthesis research, studied and worked at the Max-Volmer-Institute (MVI) of the Technische Universität Berlin, Germany, for more than 50 years, and thus witnessed the rise and decline of photosynthesis research at this institute, which at its prime was one of the leading centers in this field. We present a tribute to Gernot Renger's work and life in the context of the history of photosynthesis research of that period, with special focus on the MVI. Gernot will be remembered for his thought-provoking questions and his boundless enthusiasm for science.
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Affiliation(s)
- Ulrich Siggel
- Max-Volmer-Laboratorium, TU Berlin, Strasse des 17. Juni 135, 10623, Berlin, Germany.
| | - Franz-Josef Schmitt
- Max-Volmer-Laboratorium, TU Berlin, Strasse des 17. Juni 135, 10623, Berlin, Germany
| | - Johannes Messinger
- Departmant of Chemistry, Umeå University, Linnaeus väg 6 (KBC huset), 90187, Umeå, Sweden.
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Kell A, Bednarczyk D, Acharya K, Chen J, Noy D, Jankowiak R. New Insight into the Water-Soluble Chlorophyll-Binding Protein fromLepidium virginicum. Photochem Photobiol 2016; 92:428-35. [DOI: 10.1111/php.12581] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2015] [Accepted: 01/18/2016] [Indexed: 01/20/2023]
Affiliation(s)
- Adam Kell
- Department of Chemistry; Kansas State University; Manhattan Kansas 66506
| | - Dominika Bednarczyk
- Department of Biological Chemistry; Weizmann Institute of Sciences; Rehovot 76100 Israel
| | - Khem Acharya
- Department of Chemistry; Kansas State University; Manhattan Kansas 66506
| | - Jinhai Chen
- Department of Chemistry; Kansas State University; Manhattan Kansas 66506
| | - Dror Noy
- Migal-Galilee Research Institute; Kiryat Shmona 11016 Israel
| | - Ryszard Jankowiak
- Department of Chemistry; Kansas State University; Manhattan Kansas 66506
- Department of Physics; Kansas State University; Manhattan Kansas 66506
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15
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Bednarczyk D, Takahashi S, Satoh H, Noy D. Assembly of water-soluble chlorophyll-binding proteins with native hydrophobic chlorophylls in water-in-oil emulsions. BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS 2015; 1847:307-313. [DOI: 10.1016/j.bbabio.2014.12.003] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2014] [Revised: 12/02/2014] [Accepted: 12/04/2014] [Indexed: 11/15/2022]
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16
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Vrandecic K, Rätsep M, Wilk L, Rusevich L, Golub M, Reppert M, Irrgang KD, Kühlbrandt W, Pieper J. Protein dynamics tunes excited state positions in light-harvesting complex II. J Phys Chem B 2015; 119:3920-30. [PMID: 25664910 DOI: 10.1021/jp5112873] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Light harvesting and excitation energy transfer in photosynthesis are relatively well understood at cryogenic temperatures up to ∼100 K, where crystal structures of several photosynthetic complexes including the major antenna complex of green plants (LHC II) are available at nearly atomic resolution. The situation is much more complex at higher or even physiological temperatures, because the spectroscopic properties of antenna complexes typically undergo drastic changes above ∼100 K. We have addressed this problem using a combination of quasielastic neutron scattering (QENS) and optical spectroscopy on native LHC II and mutant samples lacking the Chl 2/Chl a 612 pigment molecule. Absorption difference spectra of the Chl 2/Chl a 612 mutant of LHC II reveal pronounced changes of spectral position and their widths above temperatures as low as ∼80 K. The complementary QENS data indicate an onset of conformational protein motions at about the same temperature. This finding suggests that excited state positions in LHC II are affected by protein dynamics on the picosecond time scale. In more detail, this means that at cryogenic temperatures the antenna complex is trapped in certain protein conformations. At higher temperature, however, a variety of conformational substates with different spectral position may be thermally accessible. At the same time, an analysis of the widths of the absorption difference spectra of Chl 2/Chl a 612 reveals three different reorganization energies or Huang-Rhys factors in different temperature ranges, respectively. These findings imply that (dynamic) pigment-protein interactions fine-tune electronic energy levels and electron-phonon coupling of LHC II for efficient excitation energy transfer at physiological temperatures.
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Affiliation(s)
- Kamarniso Vrandecic
- Institute of Physics, University of Tartu , Ravila 14C, 50411 Tartu, Estonia
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17
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Rusevich L, Embs J, Bektas I, Paulsen H, Renger G, Pieper J. Protein and solvent dynamics of the water-soluble chlorophyll-binding protein (WSCP). EPJ WEB OF CONFERENCES 2015. [DOI: 10.1051/epjconf/20158302016] [Citation(s) in RCA: 5] [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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18
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Takahashi S, Abe E, Nakayama K, Satoh H. Identification of genes encoding photoconvertible (Class I) water-soluble chlorophyll-binding proteins from Chenopodium ficifolium. Biosci Biotechnol Biochem 2014; 79:205-10. [PMID: 25333387 DOI: 10.1080/09168451.2014.972326] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Photoconvertible water-soluble chlorophyll-binding proteins, called Class I WSCPs, have been detected in Chenopodiaceae, Amaranthaceae and Polygonaceae plant species. To date, Chenopodium album WSCP (CaWSCP) is the only cloned gene encoding a Class I WSCP. In this study, we identified two cDNAs encoding Chenopodium ficifolium Class I WSCPs, CfWSCP1, and CfWSCP2. Sequence analyses revealed that the open reading frames of CfWSCP1 and CfWSCP2 were 585 and 588 bp, respectively. Furthermore, both CfWSCPs contain cystein2 and cystein30, which are essential for the chlorophyll-binding ability of CaWSCP. Recombinant CfWSCP1 and CfWSCP2, expressed in Escherichia coli as hexa-histidine fusion proteins (CfWSCP1-His and CfWSCP2-His), formed inclusion bodies; however, we were able to solubilize these using a buffer containing 8 M urea and then refold them by dialysis. The refolded CfWSCP1-His and CfWSCP2-His could bind chlorophylls and exhibited photoconvertibility, confirming that the cloned CfWSCPs are further examples of Class I WSCPs.
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Affiliation(s)
- Shigekazu Takahashi
- a Faculty of Science, Department of Biomolecular Science , Toho University , Funabashi , Japan
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19
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Takahashi S, Seki Y, Uchida A, Nakayama K, Satoh H. Cysteine-2 and Cys30 are essential for chlorophyll-binding activity of the water-soluble chlorophyll-binding protein (WSCP) of Chenopodium album. Biosci Biotechnol Biochem 2014; 78:1825-32. [PMID: 25060234 DOI: 10.1080/09168451.2014.940274] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Chenopodium album has a non-photosynthetic chlorophyll protein known as the water-soluble chlorophyll (Chl)-binding protein (WSCP). The C. album WSCP (CaWSCP) is able to photoconvert the chlorin skeleton of Chl a into a bacteriochlorin-like skeleton. Reducing reagents such as β-mercaptoethanol or dithiothreitol inhibit photoconversion, indicating that S-S bridge(s) in CaWSCP are quite important for it. Recently, we found that the mature region of CaWSCP contains five cysteine residues; Cys2, Cys30, Cys48, Cys63, and Cys144. To identify which cysteine residues are involved in the photoconversion, we generated five mutants (C2S, C30S, C48S, C63S, and C144S) by site-directed mutagenesis. Interestingly, C48S, C63S, and C144S mutants showed the same Chl-binding activity and photoconvertibility as those of the recombinant wild-type CaWSCP-His, while the C2S and C30S mutants completely lost Chl-binding activity. Our findings indicated that the S-S bridge between Cys2 and Cys30 in each CaWSCP subunit is essential for Chl-binding activity.
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20
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Takahashi S, Uchida A, Nakayama K, Satoh H. Three-step photoconversion of only three subunits of the water-soluble chlorophyll-binding protein tetramer from Chenopodium album. Protein J 2014; 33:337-43. [PMID: 24824829 DOI: 10.1007/s10930-014-9565-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Water-soluble chlorophyll (Chl)-binding proteins (WSCPs) have been found in various plants. WSCPs are categorized into two classes based on their photoconvertibility: Class I (photoconvertible) and Class II (non-photoconvertible). Based on their absorption peaks, which occur in the red wavelengths, the pre- and post-photoconverted forms of Chenopodium album WSCP (CaWSCP) are called CP668 and CP742, respectively. Although various biochemical and biophysical properties of CaWSCP have already been characterized, questions remain regarding the structural dynamics of the photoconversion from CP668 to CP742, and the relationship between the photoconversion activity and incident light wavelength. To address how the wavelength of incident light affects the photoconversion, we performed time-course analyses of CaWSCP photoconversion by using light-emitting diodes that emit either white light, or at the discrete wavelengths 670, 645, 525, 470, or 430 nm. The most efficient photoconversion was observed under irradiation at 430 nm. Less efficient photoconversion was observed under irradiation with 670, 645, 470, or 525 nm light, in that order. The relationship between photoconversion activity and wavelength corresponded with the absorption peak intensities of Chls in the CaWSCP complex. The observed time dependence of the A(742)/A(668) ratio during photoconversion of the CaWSCP complex indicated that the photoconversion from CP668 to CP742 occurs in a three-step reaction, and that only three subunits in the complex could be photoconverted.
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Affiliation(s)
- Shigekazu Takahashi
- Department of Biomolecular Science, Faculty of Science, Toho University, 2-2-1 Miyama, Funabashi, Chiba, 274-8510, Japan
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21
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Alster J, Lokstein H, Dostál J, Uchida A, Zigmantas D. 2D Spectroscopy Study of Water-Soluble Chlorophyll-Binding Protein from Lepidium virginicum. J Phys Chem B 2014; 118:3524-31. [DOI: 10.1021/jp411174t] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jan Alster
- Department
of Chemical Physics, Lund University, P.O. Box 124, SE-221-00 Lund, Sweden
| | - Heiko Lokstein
- Glasgow
Biomedical Research Centre, Institute of Molecular, Cell and Systems
Biology, University of Glasgow, 120 University Place, Glasgow G12 8TA, Scotland/U.K
| | - Jakub Dostál
- Department
of Chemical Physics, Lund University, P.O. Box 124, SE-221-00 Lund, Sweden
| | - Akira Uchida
- Department
of Biomolecular Science, Faculty of Science, Toho University, 2-2-1
Miyama, Funabashi, Chiba 274-8510, Japan
| | - Donatas Zigmantas
- Department
of Chemical Physics, Lund University, P.O. Box 124, SE-221-00 Lund, Sweden
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22
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Takahashi S, Uchida A, Nakayama K, Satoh H. The C-terminal Extension Peptide of Non-photoconvertible Water-Soluble Chlorophyll-Binding Proteins (Class II WSCPs) Affects Their Solubility and Stability: Comparative Analyses of the Biochemical and Chlorophyll-Binding Properties of Recombinant Brassica, Raphanus and Lepidium WSCPs with or Without Their C-terminal Extension Peptides. Protein J 2014; 33:75-84. [DOI: 10.1007/s10930-013-9539-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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23
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Takahashi S, Yanai H, Oka-Takayama Y, Zanma-Sohtome A, Fujiyama K, Uchida A, Nakayama K, Satoh H. Molecular cloning, characterization and analysis of the intracellular localization of a water-soluble chlorophyll-binding protein (WSCP) from Virginia pepperweed (Lepidium virginicum), a unique WSCP that preferentially binds chlorophyll b in vitro. PLANTA 2013; 238:1065-1080. [PMID: 23995835 DOI: 10.1007/s00425-013-1952-7] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2013] [Accepted: 08/21/2013] [Indexed: 06/02/2023]
Abstract
Various plants possess non-photosynthetic, hydrophilic chlorophyll (Chl) proteins called water-soluble Chl-binding proteins (WSCPs). WSCPs are categorized into two classes; Class I (photoconvertible type) and Class II (non-photoconvertible type). Among Class II WSCPs, only Lepidium virginicum WSCP (LvWSCP) exhibits a low Chl a/b ratio compared with that found in the leaf. Although the physicochemical properties of LvWSCP have been characterized, its molecular properties have not yet been documented. Here, we report the characteristics of the LvWSCP gene, the biochemical properties of a recombinant LvWSCP, and the intracellular localization of LvWSCP. The cloned LvWSCP gene possesses a 669-bp open reading frame. Matrix-assisted laser desorption ionization time-of-flight mass spectrometry analysis revealed that the precursor of LvWSCP contains both N- and C-terminal extension peptides. RT-PCR analysis revealed that LvWSCP was transcribed in various tissues, with the levels being higher in developing tissues. A recombinant LvWSCP and hexa-histidine fusion protein (LvWSCP-His) could remove Chls from the thylakoid in aqueous solution and showed an absorption spectrum identical to that of native LvWSCP. Although LvWSCP-His could bind both Chl a and Chl b, it bound almost exclusively to Chl b when reconstituted in 40 % methanol. To clarify the intracellular targeting functions of the N- and C-terminal extension peptides, we constructed transgenic Arabidopsis thaliana lines expressing the Venus protein fused with the LvWSCP N- and/or C-terminal peptides, as well as Venus fused at the C-terminus of LvWSCP. The results showed that the N-terminal peptide functioned in ER body targeting, while the C-terminal sequence did not act as a trailer peptide.
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Affiliation(s)
- Shigekazu Takahashi
- Department of Biomolecular Science, Faculty of Science, Toho University, 2-2-1 Miyama, Funabashi, Chiba, 274-8510, Japan
| | - Haruna Yanai
- Department of Biomolecular Science, Faculty of Science, Toho University, 2-2-1 Miyama, Funabashi, Chiba, 274-8510, Japan
| | - Yuko Oka-Takayama
- Department of Biomolecular Science, Faculty of Science, Toho University, 2-2-1 Miyama, Funabashi, Chiba, 274-8510, Japan
| | - Aya Zanma-Sohtome
- Department of Biomolecular Science, Faculty of Science, Toho University, 2-2-1 Miyama, Funabashi, Chiba, 274-8510, Japan
| | - Kosaku Fujiyama
- Department of Biomolecular Science, Faculty of Science, Toho University, 2-2-1 Miyama, Funabashi, Chiba, 274-8510, Japan
| | - Akira Uchida
- Department of Biomolecular Science, Faculty of Science, Toho University, 2-2-1 Miyama, Funabashi, Chiba, 274-8510, Japan
| | - Katsumi Nakayama
- Department of Biomolecular Science, Faculty of Science, Toho University, 2-2-1 Miyama, Funabashi, Chiba, 274-8510, Japan
| | - Hiroyuki Satoh
- Department of Biomolecular Science, Faculty of Science, Toho University, 2-2-1 Miyama, Funabashi, Chiba, 274-8510, Japan.
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24
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Takahashi S, Yoshikawa M, Kamada A, Ohtsuki T, Uchida A, Nakayama K, Satoh H. The photoconvertible water-soluble chlorophyll-binding protein of Chenopodium album is a member of DUF538, a superfamily that distributes in Embryophyta. JOURNAL OF PLANT PHYSIOLOGY 2013; 170:1549-1552. [PMID: 23820553 DOI: 10.1016/j.jplph.2013.06.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2013] [Revised: 06/03/2013] [Accepted: 06/03/2013] [Indexed: 06/02/2023]
Abstract
Various plants possess hydrophilic chlorophyll (Chl) proteins known as water-soluble Chl-binding proteins (WSCPs). WSCPs exist in two forms: Class I and Class II, of which Class I alone exhibits unique photoconvertibility. Although numerous genes encoding Class II WSCPs have been identified and the molecular properties of their recombinant proteins have been well characterized, no Class I WSCP gene has been identified to date. In this study, we cloned the cDNA and a gene encoding the Class I WSCP of Chenopodium album (CaWSCP). Sequence analyses revealed that CaWSCP comprises a single exon corresponding to 585bp of an open reading frame encoding 195 amino acid residues. The CaWSCP protein sequence possesses a signature of DUF538, a protein superfamily of unknown function found almost exclusively in Embryophyta. The recombinant CaWSCP was expressed in Escherichia coli as a hexa-histidine fusion protein (CaWSCP-His) that removes Chls from the thylakoid. Under visible light illumination, the reconstituted CaWSCP-His was successfully photoconverted into a different pigment with an absorption spectrum identical to that of native CaWSCP. Interestingly, while CaWSCP-His could bind both Chl a and Chl b, photoconversion occurred only in CaWSCP-His reconstituted with Chl a.
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Affiliation(s)
- Shigekazu Takahashi
- Department of Biomolecular Science, Toho University, 2-2-1 Miyama, Funabashi, Chiba 274-8510, Japan
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25
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Bektas I, Fellenberg C, Paulsen H. Water-soluble chlorophyll protein (WSCP) of Arabidopsis is expressed in the gynoecium and developing silique. PLANTA 2012; 236:251-259. [PMID: 22350767 DOI: 10.1007/s00425-012-1609-y] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2011] [Accepted: 02/02/2012] [Indexed: 05/27/2023]
Abstract
Water-soluble chlorophyll protein (WSCP) has been found in many Brassicaceae, most often in leaves. In many cases, its expression is stress-induced, therefore, it is thought to be involved in some stress response. In this work, recombinant WSCP from Arabidopsis thaliana (AtWSCP) is found to form chlorophyll-protein complexes in vitro that share many properties with recombinant or native WSCP from Brassica oleracea, BoWSCP, including an unusual heat resistance up to 100°C in aqueous solution. A polyclonal antibody raised against the recombinant apoprotein is used to identify plant tissues expressing AtWSCP. The only plant organs containing significant amounts of AtWSCP are the gynoecium in open flowers and the septum of developing siliques, specifically the transmission tract. In fully grown but still green siliques, the protein has almost disappeared. Possible implications for AtWSCP functions are discussed.
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Affiliation(s)
- Inga Bektas
- Institut f. Allgemeine Botanik der Johannes-Gutenberg-Universität, Johannes-von-Müller-Weg 6, 55099, Mainz, Germany
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26
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Takahashi S, Yanai H, Nakamaru Y, Uchida A, Nakayama K, Satoh H. Molecular cloning, characterization and analysis of the intracellular localization of a water-soluble Chl-binding protein from Brussels sprouts (Brassica oleracea var. gemmifera). PLANT & CELL PHYSIOLOGY 2012; 53:879-91. [PMID: 22419824 DOI: 10.1093/pcp/pcs031] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
A water-soluble Chl-binding protein from Brussels sprouts (Brassica oleracea var. gemmifera), hereafter termed BoWSCP, is categorized into the Class II WSCPs (non-photoconvertible WSCPs). Previous studies on BoWSCP have focused mainly on its biochemical characterization. In this study, we cloned the cDNA encoding BoWSCP. Sequence analysis revealed that the BoWSCP gene was composed of a single exon corresponding to 654 bp of an open reading frame encoding 218 amino acid residues, including 19 residues of a deduced signal peptide targeted to the endoplasmic reticulum (ER). Matrix-assisted laser desorption ionization time-of-flight mass spectrometry analysis of native BoWSCP revealed that the molecular mass of the subunit was 19,008.523 Da, corresponding to a mature protein of 178 amino acids, indicating the removal of 21 residues in the C-terminal region. Functional BoWSCP was expressed in Escherichia coli as a hexa-histidine fusion protein (BoWSCP-His). When BoWSCP-His was mixed with thylakoid membranes in aqueous solution, BoWSCP-His was able to remove Chls from the thylakoid membranes. The absorption spectrum of the reconstituted BoWSCP-His was identical to that of the native BoWSCP. Chl binding analyses of BoWSCP-His revealed that the BoWSCP-His bound both Chl a and Chl b with almost the same affinity in 40% methanol solution, although the native BoWSCP had a higher content of Chl a. To reveal the intracellular localization of BoWSCP, we constructed a transgenic plant expressing the fluorescent protein fused with the N-terminal deduced signal peptide of BoWSCP. The fluorescence emitted from the chimeric protein was detected in the ER body, an ER-derived compartment observed only in Brassicaceae plants.
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Affiliation(s)
- Shigekazu Takahashi
- Department of Biomolecular Science, Toho University, 2-2-1 Miyama, Funabashi, Chiba 274-8510, Japan
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27
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Theiss C, Schmitt FJ, Pieper J, Nganou C, Grehn M, Vitali M, Olliges R, Eichler HJ, Eckert HJ. Excitation energy transfer in intact cells and in the phycobiliprotein antennae of the chlorophyll d containing cyanobacterium Acaryochloris marina. JOURNAL OF PLANT PHYSIOLOGY 2011; 168:1473-1487. [PMID: 21396735 DOI: 10.1016/j.jplph.2011.02.002] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2010] [Revised: 02/04/2011] [Accepted: 02/07/2011] [Indexed: 05/30/2023]
Abstract
The cyanobacterium Acaryochloris marina is unique because it mainly contains Chlorophyll d (Chl d) in the core complexes of PS I and PS II instead of the usually dominant Chl a. Furthermore, its light harvesting system has a structure also different from other cyanobacteria. It has both, a membrane-internal chlorophyll containing antenna and a membrane-external phycobiliprotein (PBP) complex. The first one binds Chl d and is structurally analogous to CP43. The latter one has a rod-like structure consisting of three phycocyanin (PC) homohexamers and one heterohexamer containing PC and allophycocyanin (APC). In this paper, we give an overview on the investigations of excitation energy transfer (EET) in this PBP-light-harvesting system and of charge separation in the photosystem II (PS II) reaction center of A. marina performed at the Technische Universität Berlin. Due to the unique structure of the PBP antenna in A. marina, this EET occurs on a much shorter overall time scale than in other cyanobacteria. We also briefly discuss the question of the pigment composition in the reaction center (RC) of PS II and the nature of the primary donor of the PS II RC.
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Affiliation(s)
- Christoph Theiss
- Institute of Optics and Atomic Physics, Technische Universität Berlin, Strasse des 17. Juni 135, Berlin, Germany.
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28
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Renger G, Pieper J, Theiss C, Trostmann I, Paulsen H, Renger T, Eichler HJ, Schmitt FJ. Water soluble chlorophyll binding protein of higher plants: a most suitable model system for basic analyses of pigment-pigment and pigment-protein interactions in chlorophyll protein complexes. JOURNAL OF PLANT PHYSIOLOGY 2011; 168:1462-1472. [PMID: 21256622 DOI: 10.1016/j.jplph.2010.12.005] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2010] [Revised: 12/08/2010] [Accepted: 12/08/2010] [Indexed: 05/30/2023]
Abstract
This short review paper describes spectroscopic studies on pigment-pigment and pigment-protein interactions of chlorophyll (Chl) a and b bound to the recombinant protein of class IIa water soluble chlorophyll protein (WSCP) from cauliflower. Two Chls form a strongly excitonically coupled open sandwich dimer within the tetrameric protein matrix. In marked contrast to the mode of excitonic coupling of Chl and bacterio-Chl molecules in light harvesting complexes and reaction centers of all photosynthetic organisms, the unique structural pigment array in the Chl dimer of WSCP gives rise to an upper excitonic state with a large oscillator strength. This property opens the way for thorough investigations on exciton relaxation processes in Chl-protein complexes. Lifetime measurements of excited singlet states show that the unusual stability towards photodamage of Chls bound to WSCP, which lack any protective carotenoid molecule, originates from a high diffusion barrier to interaction of molecular dioxygen with Chl triplets. Site selective spectroscopic methods provide a wealth of information on the interactions of the Chls with the protein matrix and on the vibronic structure of the pigments. The presented data and discussions illustrate the great potential of WSCP as a model system for systematic experimental and theoretical studies on the functionalizing of Chls by the protein matrix. It opens the way for further detailed analyses and a deeper understanding of the properties of pigment protein complexes.
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Affiliation(s)
- G Renger
- Max Volmer Laboratory for Biophysical Chemistry, Berlin Institute of Technology, Berlin, Germany.
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29
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Pieper J, Rätsep M, Trostmann I, Paulsen H, Renger G, Freiberg A. Excitonic Energy Level Structure and Pigment−Protein Interactions in the Recombinant Water-Soluble Chlorophyll Protein. I. Difference Fluorescence Line-Narrowing. J Phys Chem B 2011; 115:4042-52. [DOI: 10.1021/jp111455g] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- J. Pieper
- Max-Volmer-Laboratories for
Biophysical Chemistry, Berlin Institute of Technology, Berlin, Germany
| | - M. Rätsep
- Institute of Physics, University of Tartu, Tartu, Estonia
| | - I. Trostmann
- Institute of General Botany, Johannes Gutenberg University Mainz, Germany
| | - H. Paulsen
- Institute of General Botany, Johannes Gutenberg University Mainz, Germany
| | - G. Renger
- Max-Volmer-Laboratories for
Biophysical Chemistry, Berlin Institute of Technology, Berlin, Germany
| | - A. Freiberg
- Institute of Physics, University of Tartu, Tartu, Estonia
- Institute of Molecular and Cell
Biology, University of Tartu, Tartu, Estonia
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30
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Pieper J, Rätsep M, Trostmann I, Schmitt FJ, Theiss C, Paulsen H, Eichler H, Freiberg A, Renger G. Excitonic Energy Level Structure and Pigment−Protein Interactions in the Recombinant Water-Soluble Chlorophyll Protein. II. Spectral Hole-Burning Experiments. J Phys Chem B 2011; 115:4053-65. [DOI: 10.1021/jp111457t] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- J. Pieper
- Max-Volmer-Laboratories for
Biophysical Chemistry, Berlin Institute of Technology, Berlin, Germany
| | - M. Rätsep
- Institute of Physics, University of Tartu, Tartu, Estonia
| | - I. Trostmann
- Institute of General Botany, Johannes Gutenberg University Mainz, Germany
| | - F.-J. Schmitt
- Max-Volmer-Laboratories for
Biophysical Chemistry, Berlin Institute of Technology, Berlin, Germany
- Institute of Optics and Atomic
Physics, Berlin Institute of Technology, Germany
| | - C. Theiss
- Institute of Optics and Atomic
Physics, Berlin Institute of Technology, Germany
| | - H. Paulsen
- Institute of General Botany, Johannes Gutenberg University Mainz, Germany
| | - H.J. Eichler
- Institute of Optics and Atomic
Physics, Berlin Institute of Technology, Germany
| | - A. Freiberg
- Institute of Physics, University of Tartu, Tartu, Estonia
- Institute of Molecular and Cell
Biology, University of Tartu, Tartu, Estonia
| | - G. Renger
- Max-Volmer-Laboratories for
Biophysical Chemistry, Berlin Institute of Technology, Berlin, Germany
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31
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Hughes JL, Conlon B, Wydrzynski T, Krausz E. The assignment of Qy(1,0) vibrational structure and Qx for chlorophyll a. ACTA ACUST UNITED AC 2010. [DOI: 10.1016/j.phpro.2010.01.226] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Reppert M, Naibo V, Jankowiak R. Analytical formulas for low-fluence non-line-narrowed hole-burned spectra in an excitonically coupled dimer. J Chem Phys 2009; 131:234104. [DOI: 10.1063/1.3270394] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Renger T, Madjet ME, Müh F, Trostmann I, Schmitt FJ, Theiss C, Paulsen H, Eichler HJ, Knorr A, Renger G. Thermally Activated Superradiance and Intersystem Crossing in the Water-Soluble Chlorophyll Binding Protein. J Phys Chem B 2009; 113:9948-57. [DOI: 10.1021/jp901886w] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- T. Renger
- Institute of Chemistry and Biochemistry, Free University Berlin, Fabeckstrasse 36a, D-14195 Berlin, Germany, Institute of General Botany, Johannes-Gutenberg-University, Müllerweg 6, D-55099 Mainz, Germany, Institute of Optics and Atomic Physics and Max Volmer Laboratory for Biophysical Chemistry, Berlin Institute of Technology, Straβe des 17. Juni 135, D-10623 Berlin, Germany, Institute of Theoretical Physics, Nonlinear Optics and Quantum Electronics, Berlin Institute of Technology, Hardenbergstrasse 36,
| | - M. E. Madjet
- Institute of Chemistry and Biochemistry, Free University Berlin, Fabeckstrasse 36a, D-14195 Berlin, Germany, Institute of General Botany, Johannes-Gutenberg-University, Müllerweg 6, D-55099 Mainz, Germany, Institute of Optics and Atomic Physics and Max Volmer Laboratory for Biophysical Chemistry, Berlin Institute of Technology, Straβe des 17. Juni 135, D-10623 Berlin, Germany, Institute of Theoretical Physics, Nonlinear Optics and Quantum Electronics, Berlin Institute of Technology, Hardenbergstrasse 36,
| | - F. Müh
- Institute of Chemistry and Biochemistry, Free University Berlin, Fabeckstrasse 36a, D-14195 Berlin, Germany, Institute of General Botany, Johannes-Gutenberg-University, Müllerweg 6, D-55099 Mainz, Germany, Institute of Optics and Atomic Physics and Max Volmer Laboratory for Biophysical Chemistry, Berlin Institute of Technology, Straβe des 17. Juni 135, D-10623 Berlin, Germany, Institute of Theoretical Physics, Nonlinear Optics and Quantum Electronics, Berlin Institute of Technology, Hardenbergstrasse 36,
| | - I. Trostmann
- Institute of Chemistry and Biochemistry, Free University Berlin, Fabeckstrasse 36a, D-14195 Berlin, Germany, Institute of General Botany, Johannes-Gutenberg-University, Müllerweg 6, D-55099 Mainz, Germany, Institute of Optics and Atomic Physics and Max Volmer Laboratory for Biophysical Chemistry, Berlin Institute of Technology, Straβe des 17. Juni 135, D-10623 Berlin, Germany, Institute of Theoretical Physics, Nonlinear Optics and Quantum Electronics, Berlin Institute of Technology, Hardenbergstrasse 36,
| | - F.-J. Schmitt
- Institute of Chemistry and Biochemistry, Free University Berlin, Fabeckstrasse 36a, D-14195 Berlin, Germany, Institute of General Botany, Johannes-Gutenberg-University, Müllerweg 6, D-55099 Mainz, Germany, Institute of Optics and Atomic Physics and Max Volmer Laboratory for Biophysical Chemistry, Berlin Institute of Technology, Straβe des 17. Juni 135, D-10623 Berlin, Germany, Institute of Theoretical Physics, Nonlinear Optics and Quantum Electronics, Berlin Institute of Technology, Hardenbergstrasse 36,
| | - C. Theiss
- Institute of Chemistry and Biochemistry, Free University Berlin, Fabeckstrasse 36a, D-14195 Berlin, Germany, Institute of General Botany, Johannes-Gutenberg-University, Müllerweg 6, D-55099 Mainz, Germany, Institute of Optics and Atomic Physics and Max Volmer Laboratory for Biophysical Chemistry, Berlin Institute of Technology, Straβe des 17. Juni 135, D-10623 Berlin, Germany, Institute of Theoretical Physics, Nonlinear Optics and Quantum Electronics, Berlin Institute of Technology, Hardenbergstrasse 36,
| | - H. Paulsen
- Institute of Chemistry and Biochemistry, Free University Berlin, Fabeckstrasse 36a, D-14195 Berlin, Germany, Institute of General Botany, Johannes-Gutenberg-University, Müllerweg 6, D-55099 Mainz, Germany, Institute of Optics and Atomic Physics and Max Volmer Laboratory for Biophysical Chemistry, Berlin Institute of Technology, Straβe des 17. Juni 135, D-10623 Berlin, Germany, Institute of Theoretical Physics, Nonlinear Optics and Quantum Electronics, Berlin Institute of Technology, Hardenbergstrasse 36,
| | - H. J. Eichler
- Institute of Chemistry and Biochemistry, Free University Berlin, Fabeckstrasse 36a, D-14195 Berlin, Germany, Institute of General Botany, Johannes-Gutenberg-University, Müllerweg 6, D-55099 Mainz, Germany, Institute of Optics and Atomic Physics and Max Volmer Laboratory for Biophysical Chemistry, Berlin Institute of Technology, Straβe des 17. Juni 135, D-10623 Berlin, Germany, Institute of Theoretical Physics, Nonlinear Optics and Quantum Electronics, Berlin Institute of Technology, Hardenbergstrasse 36,
| | - A. Knorr
- Institute of Chemistry and Biochemistry, Free University Berlin, Fabeckstrasse 36a, D-14195 Berlin, Germany, Institute of General Botany, Johannes-Gutenberg-University, Müllerweg 6, D-55099 Mainz, Germany, Institute of Optics and Atomic Physics and Max Volmer Laboratory for Biophysical Chemistry, Berlin Institute of Technology, Straβe des 17. Juni 135, D-10623 Berlin, Germany, Institute of Theoretical Physics, Nonlinear Optics and Quantum Electronics, Berlin Institute of Technology, Hardenbergstrasse 36,
| | - G. Renger
- Institute of Chemistry and Biochemistry, Free University Berlin, Fabeckstrasse 36a, D-14195 Berlin, Germany, Institute of General Botany, Johannes-Gutenberg-University, Müllerweg 6, D-55099 Mainz, Germany, Institute of Optics and Atomic Physics and Max Volmer Laboratory for Biophysical Chemistry, Berlin Institute of Technology, Straβe des 17. Juni 135, D-10623 Berlin, Germany, Institute of Theoretical Physics, Nonlinear Optics and Quantum Electronics, Berlin Institute of Technology, Hardenbergstrasse 36,
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