1
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Reiter S, Gordiy I, Kollmannsberger KL, Liu F, Thyrhaug E, Leister D, Warnan J, Hauer J, de Vivie-Riedle R. Molecular interactions of photosystem I and ZIF-8 in bio-nanohybrid materials. Phys Chem Chem Phys 2024; 26:23228-23239. [PMID: 39192757 DOI: 10.1039/d4cp03021d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/29/2024]
Abstract
Bio-nanohybrid devices featuring natural photocatalysts bound to a nanostructure hold great promise in the search for sustainable energy conversion. One of the major challenges of integrating biological systems is protecting them against harsh environmental conditions while retaining, or ideally enhancing their photophysical properties. In this mainly computational work we investigate an assembly of cyanobacterial photosystem I (PS I) embedded in a metal-organic framework (MOF), namely the zeolitic imidazolate framework ZIF-8. This complex has been reported experimentally [Bennett et al., Nanoscale Adv., 2019, 1, 94] but so far the molecular interactions between PS I and the MOF remained elusive. We show via absorption spectroscopy that PS I remains intact throughout the encapsulation-release cycle. Molecular dynamics (MD) simulations further confirm that the encapsulation has no noticeable structural impact on the photosystem. However, the MOF building blocks frequently coordinate to the Mg2+ ions of chlorophylls in the periphery of the antenna complex. High-level quantum mechanical calculations reveal charge-transfer interactions, which affect the excitonic network and thereby may reversibly change the fluorescence properties of PS I. Nevertheless, our results highlight the stability of PS I in the MOF, as the reaction center remains unimpeded by the heterogeneous environment, paving the way for applications in the foreseeable future.
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Affiliation(s)
- Sebastian Reiter
- Department of Chemistry, Ludwig-Maximilians-Universität München, Butenandtstr. 11, 81377 Munich, Germany.
| | - Igor Gordiy
- Department of Chemistry, Ludwig-Maximilians-Universität München, Butenandtstr. 11, 81377 Munich, Germany.
| | - Kathrin L Kollmannsberger
- Chair of Inorganic and Metal-Organic Chemistry, Department of Chemistry and Catalysis Research Center (CRC), TUM School of Natural Sciences, Technical University of Munich, Lichtenbergstr. 4, 85748 Garching, Germany
| | - Feng Liu
- Faculty of Biology, Ludwig-Maximilians-Universität München, Großhaderner Str. 2-4, 82152 Planegg-Martinsried, Germany
| | - Erling Thyrhaug
- Professorship of Dynamic Spectroscopy, Department of Chemistry and Catalysis Research Center (CRC), TUM School of Natural Sciences, Technical University of Munich, Lichtenbergstr. 4, 85748 Garching, Germany.
| | - Dario Leister
- Faculty of Biology, Ludwig-Maximilians-Universität München, Großhaderner Str. 2-4, 82152 Planegg-Martinsried, Germany
| | - Julien Warnan
- Chair of Inorganic and Metal-Organic Chemistry, Department of Chemistry and Catalysis Research Center (CRC), TUM School of Natural Sciences, Technical University of Munich, Lichtenbergstr. 4, 85748 Garching, Germany
| | - Jürgen Hauer
- Professorship of Dynamic Spectroscopy, Department of Chemistry and Catalysis Research Center (CRC), TUM School of Natural Sciences, Technical University of Munich, Lichtenbergstr. 4, 85748 Garching, Germany.
| | - Regina de Vivie-Riedle
- Department of Chemistry, Ludwig-Maximilians-Universität München, Butenandtstr. 11, 81377 Munich, Germany.
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2
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Lambreva MD, Akhtar P, Sipka G, Margonelli A, Lambrev PH. Fluorescence quenching in thylakoid membranes induced by single-walled carbon nanotubes. Photochem Photobiol Sci 2023:10.1007/s43630-023-00403-7. [PMID: 36935477 DOI: 10.1007/s43630-023-00403-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Accepted: 02/28/2023] [Indexed: 03/21/2023]
Abstract
The distinct photochemical and electrochemical properties of single-walled carbon nanotubes (SWCNTs) boosted the research interest in nanomaterial utilization in different in vivo and in vitro photosynthetic biohybrid setups. Aiming to unravel the yet not fully understood energetic interactions between the nanotubes and photosynthetic pigment-protein assemblies in an aqueous milieu, we studied SWCNT effects on the photochemical reactions of isolated thylakoid membranes (TMs), Photosystem II (PSII)-enriched membrane fragments and light-harvesting complexes (LHCII). The SWCNTs induced quenching of the steady-state chlorophyll fluorescence in the TM-biohybrid systems with a corresponding shortening of the average fluorescence lifetimes. The effect was not related to changes in the integrity and macroorganization of the photosynthetic membranes. Moreover, we found no evidence for direct excitation energy exchange between the SWCNTs and pigment-protein complexes, since neither the steady-state nor time-resolved fluorescence of LHCII-biohybrid systems differed from the corresponding controls. The attenuation of the fluorescence signal in the TM-biohybrid systems indicates possible leakage of photosynthetic electrons toward the nanotubes that most probably occurs at the level of the PSII acceptor site. Although it is too early to speculate on the nature of the involved electron donors and intermediate states, the observed energetic interaction could be exploited to increase the photoelectron capture efficiency of natural biohybrid systems for solar energy conversion.
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Affiliation(s)
- Maya D Lambreva
- Institute for Biological Systems, National Research Council, Via Salaria Km 29.300, 00015, Monterotondo Stazione, Rome, Italy.
| | - Parveen Akhtar
- Institute of Plant Biology, Biological Research Centre, Temesvári Krt. 62, 6726, Szeged, Hungary
| | - Gábor Sipka
- Institute of Plant Biology, Biological Research Centre, Temesvári Krt. 62, 6726, Szeged, Hungary
| | - Andrea Margonelli
- Institute of Crystallography, National Research Council, Via Salaria Km 29.300, 00015, Monterotondo Stazione, Rome, Italy
| | - Petar H Lambrev
- Institute of Plant Biology, Biological Research Centre, Temesvári Krt. 62, 6726, Szeged, Hungary.
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3
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Antal TK, Volgusheva AA, Kukarskikh GP, Lukashev EP, Bulychev AA, Margonelli A, Orlanducci S, Leo G, Cerri L, Tyystjärvi E, Lambreva MD. Single-walled carbon nanotubes protect photosynthetic reactions in Chlamydomonas reinhardtii against photoinhibition. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2022; 192:298-307. [PMID: 36283202 DOI: 10.1016/j.plaphy.2022.10.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 09/08/2022] [Accepted: 10/07/2022] [Indexed: 06/16/2023]
Abstract
Single-walled carbon nanotubes (SWCNTs) are among the most exploited carbon allotropes in nanosensing, bioengineering, and photobiological applications, however, the interactions of nanotubes with the photosynthetic process and structures are still poorly understood. We found that SWCNTs are not toxic to the photosynthetic apparatus of the model unicellular alga Chlamydomonas reinhardtii and demonstrate that this carbon nanomaterial can protect algal photosynthesis against photoinhibition. The results show that the inherent phytotoxicity of the nanotubes may be overcome by an intentional selection of nanomaterial characteristics. A low concentration (2 μg mL-1) of well-dispersed, purified and small SWCNTs did not alter the growth and pigment accumulation of the cultures. Indeed, under the photoinhibitory conditions of our experiments, SWCNT-enriched samples were characterized by a lower rate of PSII inactivation, reduced excitation pressure in PSII, a higher rate of photosynthetic electron transport, and an increased non-photochemical quenching in comparison with the controls. In addition, SWCNTs change the distribution of energy between the photosystems in favour of PSII (state 1). The underlying mechanism of this action is not yet understood but possibly, electrons or energy can be exchanged between the redox active nanotubes and photosynthetic components, and probably other redox active intra-chloroplast constituents. Alternatively, nanotubes may promote the formation of an NPQ conformation of PSII. Our results provided evidence for such electron/energy transfer from photosynthetic structures toward the nanotubes. The discovered photoprotective effects can potentially be used in photobiotechnology to maintain the photosynthetic activity of microorganisms under unfavourable conditions.
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Affiliation(s)
- Taras K Antal
- Laboratory of Integrated Ecological Research, Pskov State University, Krasnoarmeyskaya st. 1, Pskov, 180000, Russia.
| | - Alena A Volgusheva
- Department of Biophysics, Faculty of Biology, Lomonosov Moscow State University, 119991, Moscow, Russia
| | - Galina P Kukarskikh
- Department of Biophysics, Faculty of Biology, Lomonosov Moscow State University, 119991, Moscow, Russia
| | - Evgeniy P Lukashev
- Department of Biophysics, Faculty of Biology, Lomonosov Moscow State University, 119991, Moscow, Russia
| | - Alexander A Bulychev
- Department of Biophysics, Faculty of Biology, Lomonosov Moscow State University, 119991, Moscow, Russia
| | - Andrea Margonelli
- Institute of Crystallography, National Research Council, 00015, Monterotondo Stazione (RM), Italy
| | - Silvia Orlanducci
- Department of Chemical Science and Technology, University of Rome Tor Vergata, 00133, Rome, Italy
| | - Gabriella Leo
- Institute for the Study of Nanostructured Materials, National Research Council, 00015 Monterotondo Stazione (RM), Italy
| | - Luciana Cerri
- Institute for the Study of Nanostructured Materials, National Research Council, 00015 Monterotondo Stazione (RM), Italy
| | - Esa Tyystjärvi
- Department of Life Technologies/Molecular Plant Biology, University of Turku, FI-20014, Turku, Finland
| | - Maya D Lambreva
- Institute of Crystallography, National Research Council, 00015, Monterotondo Stazione (RM), Italy.
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4
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Pamu R, Khomami B, Mukherjee D. Observation of anomalous carotenoid and blind chlorophyll activations in photosystem I under synthetic membrane confinements. BIOCHIMICA ET BIOPHYSICA ACTA. BIOMEMBRANES 2022; 1864:183930. [PMID: 35398026 DOI: 10.1016/j.bbamem.2022.183930] [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: 08/02/2021] [Revised: 03/27/2022] [Accepted: 04/01/2022] [Indexed: 06/14/2023]
Abstract
The role of natural thylakoid membrane confinements in architecting the robust structural and electrochemical properties of PSI is not fully understood. Most PSI studies till date extract the proteins from their natural confinements that can lead to non-native conformations. Recently our group had successfully reconstituted PSI in synthetic lipid membranes using detergent-mediated liposome solubilizations. In this study, we investigate the alterations in chlorophylls and carotenoids interactions and reorganization in PSI based on spectral property changes induced by its confinement in anionic DPhPG and zwitterionic DPhPC phospholipid membranes. To this end, we employ a combination of absorption, fluorescence, and circular dichroism (CD) spectroscopic measurements. Our results indicate unique activation and alteration of photoresponses from the PSI carotenoid (Car) bands in PSI-DPhPG proteoliposomes that can tune the Excitation Energy Transfer (EET), otherwise absent in PSI at non-native environments. Specifically, we observe broadband light harvesting via enhanced absorption in the otherwise non-absorptive green region (500-580 nm) of the Chlorophylls (Chl) along with ~64% increase in the full-width half maximum of the Qy band (650-720 nm). The CD results indicate enhanced Chl-Chl and Chl-Car interactions along with conformational changes in protein secondary structures. Such distinct changes in the Car and Chl bands are not observed in PSI confined in DPhPC. The fundamental insights into membrane microenvironments tailoring PSI subunits reorganization and interactions provide novel strategies for tuning photoexcitation processes and rational designing of biotic-abiotic interfaces in PSI-based photoelectrochemical energy conversion systems.
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Affiliation(s)
- Ravi Pamu
- Department of Mechanical, Aerospace, and Biomedical Engineering, University of Tennessee, Knoxville, TN 37996, USA; Nano-BioMaterials Laboratory for Energy, Energetics & Environment (nbml-E3), University of Tennessee, Knoxville, TN 37996, USA; Sustainable Energy Education and Research Center (SEERC), University of Tennessee, Knoxville, TN 37996, USA
| | - Bamin Khomami
- Department of Chemical and Biomolecular Engineering, University of Tennessee, Knoxville, TN 37996, USA; Department of Mechanical, Aerospace, and Biomedical Engineering, University of Tennessee, Knoxville, TN 37996, USA; Sustainable Energy Education and Research Center (SEERC), University of Tennessee, Knoxville, TN 37996, USA.
| | - Dibyendu Mukherjee
- Department of Chemical and Biomolecular Engineering, University of Tennessee, Knoxville, TN 37996, USA; Nano-BioMaterials Laboratory for Energy, Energetics & Environment (nbml-E3), University of Tennessee, Knoxville, TN 37996, USA; Sustainable Energy Education and Research Center (SEERC), University of Tennessee, Knoxville, TN 37996, USA.
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5
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Kim YJ, Hong H, Yun J, Kim SI, Jung HY, Ryu W. Photosynthetic Nanomaterial Hybrids for Bioelectricity and Renewable Energy Systems. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2005919. [PMID: 33236450 DOI: 10.1002/adma.202005919] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 10/08/2020] [Indexed: 06/11/2023]
Abstract
Harvesting solar energy in the form of electricity from the photosynthesis of plants, algal cells, and bacteria has been researched as the most environment-friendly renewable energy technology in the last decade. The primary challenge has been the engineering of electrochemical interfacing with photosynthetic apparatuses, organelles, or whole cells. However, with the aid of low-dimensional nanomaterials, there have been many advances, including enhanced photon absorption, increased generation of photosynthetic electrons (PEs), and more efficient transfer of PEs to electrodes. These advances have demonstrated the possibility for the technology to advance to a new level. In this article, the fundamentals of photosynthesis are introduced. How PE harvesting systems have improved concerning solar energy absorption, PE production, and PE collection by electrodes is discussed. The review focuses on how different kinds of nanomaterials are applied and function in interfacing with photosynthetic materials for enhanced PE harvesting. Finally, the review analyzes how the performance of PE harvesting and stand-alone systems have evolved so far and its future prospects.
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Affiliation(s)
- Yong Jae Kim
- School of Mechanical Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, South Korea
| | - Hyeonaug Hong
- School of Mechanical Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, South Korea
| | - JaeHyoung Yun
- School of Mechanical Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, South Korea
| | - Seon Il Kim
- School of Mechanical Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, South Korea
| | - Ho Yun Jung
- School of Mechanical Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, South Korea
| | - WonHyoung Ryu
- School of Mechanical Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, South Korea
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6
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Petrova N, Paunov M, Petrov P, Velikova V, Goltsev V, Krumova S. Polymer-Modified Single-Walled Carbon Nanotubes Affect Photosystem II Photochemistry, Intersystem Electron Transport Carriers and Photosystem I End Acceptors in Pea Plants. Molecules 2021; 26:5958. [PMID: 34641502 PMCID: PMC8512794 DOI: 10.3390/molecules26195958] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Revised: 09/26/2021] [Accepted: 09/27/2021] [Indexed: 11/16/2022] Open
Abstract
Single-walled carbon nanotubes (SWCNT) have recently been attracting the attention of plant biologists as a prospective tool for modulation of photosynthesis in higher plants. However, the exact mode of action of SWCNT on the photosynthetic electron transport chain remains unknown. In this work, we examined the effect of foliar application of polymer-grafted SWCNT on the donor side of photosystem II, the intersystem electron transfer chain and the acceptor side of photosystem I. Analysis of the induction curves of chlorophyll fluorescence via JIP test and construction of differential curves revealed that SWCNT concentrations up to 100 mg/L did not affect the photosynthetic electron transport chain. SWCNT concentration of 300 mg/L had no effect on the photosystem II donor side but provoked inactivation of photosystem II reaction centres and slowed down the reduction of the plastoquinone pool and the photosystem I end acceptors. Changes in the modulated reflection at 820 nm, too, indicated slower re-reduction of photosystem I reaction centres in SWCNT-treated leaves. We conclude that SWCNT are likely to be able to divert electrons from the photosynthetic electron transport chain at the level of photosystem I end acceptors and plastoquinone pool in vivo. Further research is needed to unequivocally prove if the observed effects are due to specific interaction between SWCNT and the photosynthetic apparatus.
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Affiliation(s)
- Nia Petrova
- Institute of Biophysics and Biomedical Engineering, Bulgarian Academy of Sciences, Acad. Georgi Bonchev Str., Bl. 21, 1113 Sofia, Bulgaria;
| | - Momchil Paunov
- Faculty of Biology, Sofia University ‘St. Kliment Ohridski’, 8 Dragan Tsankov Blvd., 1164 Sofia, Bulgaria; (M.P.); (V.G.)
| | - Petar Petrov
- Institute of Polymers, Bulgarian Academy of Sciences, Acad. Georgi Bonchev Str., Bl. 103-A, 1113 Sofia, Bulgaria;
| | - Violeta Velikova
- Institute of Plant Physiology and Genetics, Bulgarian Academy of Sciences, Acad. Georgi Bonchev Str., Bl. 21, 1113 Sofia, Bulgaria
| | - Vasilij Goltsev
- Faculty of Biology, Sofia University ‘St. Kliment Ohridski’, 8 Dragan Tsankov Blvd., 1164 Sofia, Bulgaria; (M.P.); (V.G.)
| | - Sashka Krumova
- Institute of Biophysics and Biomedical Engineering, Bulgarian Academy of Sciences, Acad. Georgi Bonchev Str., Bl. 21, 1113 Sofia, Bulgaria;
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7
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Bennett TH, Pamu R, Yang G, Mukherjee D, Khomami B. A new platform for development of photosystem I based thin films with superior photocurrent: TCNQ charge transfer salts derived from ZIF-8. NANOSCALE ADVANCES 2020; 2:5171-5180. [PMID: 36132048 PMCID: PMC9418745 DOI: 10.1039/d0na00220h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Accepted: 07/20/2020] [Indexed: 05/10/2023]
Abstract
The transmembrane photosynthetic protein complex Photosystem I (PSI) is highly sought after for incorporation into biohybrid photovoltaic devices due to its remarkable photoactive electrochemical properties, chiefly driving charge separation with ∼1 V potential and ∼100% quantum efficiency. In pursuit of these integrated technologies, three factors must be simultaneously tuned, namely, direct redox transfer steps, three-dimensional coordination and stabilization of PSI aggregates, and interfacial connectivity with conductive pathways. Building on our recent successful encapsulation of PSI in the metal-organic framework ZIF-8, herein we use the zinc and imidazole cations from this precursor to form charge transfer complexes with an extremely strong organic electron acceptor, TCNQ. Specifically, the PSI-Zn-H2mim-TCNQ charge transfer salt complex was drop cast on ITO to form dense films. Subsequent voltammetric cycling induced cation exchange and electrochemical annealing of the film was used to enhance electron conductivity giving rise to a photocurrent in the order of 15 μA cm-2. This study paves the way for a myriad of future opportunities for successful integration of this unique class of charge transfer salt complexes with biological catalysts and light harvesters.
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Affiliation(s)
- Tyler H Bennett
- Department of Chemical & Biomolecular Engineering, University of Tennessee Knoxville Tennessee 37996 USA
| | - Ravi Pamu
- Department of Mechanical, Aerospace, and Biomedical Engineering, University of Tennessee Knoxville Tennessee 37996 USA
| | - Guang Yang
- Oak Ridge National Laboratory, Materials Science and Technology Division Oak Ridge TN 37830 USA
| | - Dibyendu Mukherjee
- Department of Chemical & Biomolecular Engineering, University of Tennessee Knoxville Tennessee 37996 USA
| | - Bamin Khomami
- Department of Chemical & Biomolecular Engineering, University of Tennessee Knoxville Tennessee 37996 USA
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8
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Melin F, Hellwig P. Redox Properties of the Membrane Proteins from the Respiratory Chain. Chem Rev 2020; 120:10244-10297. [DOI: 10.1021/acs.chemrev.0c00249] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Frederic Melin
- Chimie de la Matière Complexe UMR 7140, Laboratoire de Bioelectrochimie et Spectroscopie, CNRS-Université de Strasbourg, 1 rue Blaise Pascal, 67070 Strasbourg, France
| | - Petra Hellwig
- Chimie de la Matière Complexe UMR 7140, Laboratoire de Bioelectrochimie et Spectroscopie, CNRS-Université de Strasbourg, 1 rue Blaise Pascal, 67070 Strasbourg, France
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9
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Heifler O, Carmeli C, Carmeli I. Chemical Tagging of Membrane Proteins Enables Oriented Binding on Solid Surfaces. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:4556-4562. [PMID: 32239960 DOI: 10.1021/acs.langmuir.9b02969] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
In biological systems, membrane proteins play major roles in energy conversion, transport, sensing, and signal transduction. Of special interest are the photosynthetic reaction centers involved in the initial process of light energy conversion to electrical and chemical energies. The oriented binding of membrane proteins to solid surfaces is important for biotechnological applications. In some cases, novel properties are generated as a result of the interaction between proteins and solid surfaces. We developed a novel approach for the oriented tagging of membrane proteins. In this unique process, bifunctional molecules are used to chemically tag the exposed surfaces of membrane proteins at selected sides of membrane vesicles. The isolated tagged membrane proteins were self-assembled on solid surfaces, leading to the fabrication of dens-oriented layers on metal and glass surfaces, as seen from the atomic force microscopy (AFM) images. In this work, we used chromatophores and membrane vesicles containing protein chlorophyll complexes for the isolation of the bacterial reaction center and photosystem I, from photosynthetic bacteria and cyanobacteria, respectively. The oriented layers, which were fabricated on metal surfaces, were functional and generated light-induced photovoltage that was measured by the Kalvin probe apparatus. The polarity of the photovoltage depended on the orientation of proteins in the layers. Other membrane proteins can be tagged by the same method. However, we preferred the use of reaction centers because their orientation can be easily detected by the polarity of their photovoltages.
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Affiliation(s)
- Omri Heifler
- Department of Biochemistry and Molecular BiologyTel Aviv UniversityTel Aviv6997801Israel
| | - Chanoch Carmeli
- Department of Biochemistry and Molecular BiologyTel Aviv UniversityTel Aviv6997801Israel
| | - Itai Carmeli
- Institute for Nano Technology, Bar Ilan University, Ranat Gan 5290002, Israel
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10
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Cherubin A, Destefanis L, Bovi M, Perozeni F, Bargigia I, de la Cruz Valbuena G, D’Andrea C, Romeo A, Ballottari M, Perduca M. Encapsulation of Photosystem I in Organic Microparticles Increases Its Photochemical Activity and Stability for Ex Vivo Photocatalysis. ACS SUSTAINABLE CHEMISTRY & ENGINEERING 2019; 7:10435-10444. [PMID: 31372325 PMCID: PMC6662883 DOI: 10.1021/acssuschemeng.9b00738] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2019] [Revised: 04/19/2019] [Indexed: 05/08/2023]
Abstract
Photosystem I (PSI) is a pigment binding multisubunit protein complex involved in the light phase of photosynthesis, catalyzing a light-dependent electron transfer reaction from plastocyanin to ferredoxin. PSI is characterized by a photochemical efficiency close to one, suggesting its possible application in light-dependent redox reaction in an extracellular context. The stability of PSI complexes isolated from plant cells is however limited if not embedded in a protective environment. Here we show an innovative solution for exploiting the photochemical properties of PSI, by encapsulation of isolated PSI complexes in PLGA (poly lactic-co-glycolic acid) organic microparticles. These encapsulated PSI complexes were able to catalyze light-dependent redox reactions with electron acceptors and donors outside the PLGA microparticles. Moreover, PSI complexes encapsulated in PLGA microparticles were characterized by a higher photochemical activity and stability compared with PSI complexes in detergent solution, suggesting their possible application for ex vivo photocatalysis.
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Affiliation(s)
- Arianna Cherubin
- Department
of Biotechnology, University of Verona, Strada Le Grazie 15, 37134 Verona, Italy
| | - Laura Destefanis
- Department
of Biotechnology, University of Verona, Strada Le Grazie 15, 37134 Verona, Italy
| | - Michele Bovi
- Department
of Biotechnology, University of Verona, Strada Le Grazie 15, 37134 Verona, Italy
| | - Federico Perozeni
- Department
of Biotechnology, University of Verona, Strada Le Grazie 15, 37134 Verona, Italy
| | - Ilaria Bargigia
- Center
for Nano Science and Technology @PoliMi, Istituto Italiano di Tecnologia, via Pascoli 70/3, 20133 Milano, Italy
- Georgia
Institute of Technology, School of Chemistry
and Biochemistry, 901
Atlantic Drive, Atlanta, Georgia 30332-0400, United States
| | - Gabriel de la Cruz Valbuena
- Center
for Nano Science and Technology @PoliMi, Istituto Italiano di Tecnologia, via Pascoli 70/3, 20133 Milano, Italy
- Department
of Physics, Politecnico di Milano, P.za L. da Vinci 32, 20133 Milano, Italy
| | - Cosimo D’Andrea
- Center
for Nano Science and Technology @PoliMi, Istituto Italiano di Tecnologia, via Pascoli 70/3, 20133 Milano, Italy
- Department
of Physics, Politecnico di Milano, P.za L. da Vinci 32, 20133 Milano, Italy
| | - Alessandro Romeo
- Department
of Computer Science, University of Verona, Strada Le Grazie 15, 37134 Verona, Italy
| | - Matteo Ballottari
- Department
of Biotechnology, University of Verona, Strada Le Grazie 15, 37134 Verona, Italy
| | - Massimiliano Perduca
- Department
of Biotechnology, University of Verona, Strada Le Grazie 15, 37134 Verona, Italy
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11
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Bennett TH, Vaughn MD, Davari SA, Park K, Mukherjee D, Khomami B. Jolly green MOF: confinement and photoactivation of photosystem I in a metal-organic framework. NANOSCALE ADVANCES 2019; 1:94-104. [PMID: 36132458 PMCID: PMC9473227 DOI: 10.1039/c8na00093j] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Accepted: 10/11/2018] [Indexed: 05/03/2023]
Abstract
Photosystem I (PSI) is a ∼1000 kDa transmembrane protein that enables photoactivated charge separation with ∼1 V driving potential and ∼100% quantum efficiency during the photosynthetic process. Although such properties make PSI a potential candidate for integration into bio-hybrid solar energy harvesting devices, the grand challenge in orchestrating such integration rests on rationally designed 3D architectures that can organize and stabilize PSI in the myriad of harsh conditions in which it needs to function. The current study investigates the optical response and photoactive properties of PSI encapsulated in a highly stable nanoporous metal-organic framework (ZIF-8), denoted here as PSI@ZIF-8. The ZIF-8 framework provides a unique scaffold with a robust confining environment for PSI while protecting its precisely coordinated chlorophyll networks from denaturing agents. Significant blue shifts in the fluorescence emissions from UV-vis measurements reveal the successful confinement of PSI in ZIF-8. Pump-probe spectroscopy confirms the photoactivity of the PSI@ZIF-8 composites by revealing the successful internal charge separation and external charge transfer of P700 + and FB - even after exposure to denaturing agents and organic solvents. This work provides greater fundamental understanding of confinement effects on pigment networks, while significantly broadening the potential working environments for PSI-integrated bio-hybrid materials.
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Affiliation(s)
- Tyler H Bennett
- Department of Chemical & Biomolecular Engineering, University of Tennessee Knoxville Tennessee 37996 USA
- Nano-BioMaterials Laboratory for Energy, Energetics & Environment (nbml-E3), University of Tennessee Knoxville Tennessee 37996 USA
- Sustainable Energy Education & Research Center (SEERC), University of Tennessee Knoxville Tennessee 37996 USA
| | | | - Seyyed Ali Davari
- Department of Mechanical, Aerospace, & Biomedical Engineering, University of Tennessee Knoxville Tennessee 37996 USA
- Nano-BioMaterials Laboratory for Energy, Energetics & Environment (nbml-E3), University of Tennessee Knoxville Tennessee 37996 USA
| | - Kiman Park
- Department of Chemistry, University of Tennessee Knoxville Tennessee 37996 USA
| | - Dibyendu Mukherjee
- Department of Chemical & Biomolecular Engineering, University of Tennessee Knoxville Tennessee 37996 USA
- Department of Mechanical, Aerospace, & Biomedical Engineering, University of Tennessee Knoxville Tennessee 37996 USA
- Nano-BioMaterials Laboratory for Energy, Energetics & Environment (nbml-E3), University of Tennessee Knoxville Tennessee 37996 USA
- Sustainable Energy Education & Research Center (SEERC), University of Tennessee Knoxville Tennessee 37996 USA
| | - Bamin Khomami
- Department of Chemical & Biomolecular Engineering, University of Tennessee Knoxville Tennessee 37996 USA
- Department of Mechanical, Aerospace, & Biomedical Engineering, University of Tennessee Knoxville Tennessee 37996 USA
- Sustainable Energy Education & Research Center (SEERC), University of Tennessee Knoxville Tennessee 37996 USA
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12
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Detection of Singlet Oxygen Formation inside Photoactive Biohybrid Composite Material. MATERIALS 2017; 11:ma11010028. [PMID: 29278357 PMCID: PMC5793526 DOI: 10.3390/ma11010028] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/26/2017] [Revised: 11/27/2017] [Accepted: 12/21/2017] [Indexed: 11/16/2022]
Abstract
Photosynthetic reaction center proteins (RCs) are the most efficient light energy converter systems in nature. The first steps of the primary charge separation in photosynthesis take place in these proteins. Due to their unique properties, combining RCs with nano-structures promising applications can be predicted in optoelectronic systems. In the present work RCs purified from Rhodobacter sphaeroides purple bacteria were immobilized on multiwalled carbon nanotubes (CNTs). Carboxyl—and amine-functionalised CNTs were used, so different binding procedures, physical sorption and chemical sorption as well, could be applied as immobilization techniques. Light-induced singlet oxygen production was measured in the prepared photoactive biocomposites in water-based suspension by histidine mediated chemical trapping. Carbon nanotubes were applied under different conditions in order to understand their role in the equilibration of singlet oxygen concentration in the suspension. CNTs acted as effective quenchers of 1O2 either by physical (resonance) energy transfer or by chemical (oxidation) reaction and their efficiency showed dependence on the diffusion distance of 1O2.
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13
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Nii D, Miyachi M, Shimada Y, Nozawa Y, Ito M, Homma Y, Ikehira S, Yamanoi Y, Nishihara H, Tomo T. Conjugates between photosystem I and a carbon nanotube for a photoresponse device. PHOTOSYNTHESIS RESEARCH 2017; 133:155-162. [PMID: 27864658 DOI: 10.1007/s11120-016-0324-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2016] [Accepted: 11/10/2016] [Indexed: 06/06/2023]
Abstract
Photosystem I (PS I) is a large pigment-protein complex embedded in the thylakoid membranes that performs light-driven electron transfer across the thylakoid membrane. Carbon nanotubes exhibit excellent electrical conductivities and excellent strength and stiffness. In this study, we generated PSI-carbon nanotube conjugates dispersed in a solution aimed at application in artificial photosynthesis. PS I complexes in which a carbon nanotube binding peptide was introduced into the middle of the PsaE subunit were conjugated on a single-walled carbon nanotube, orienting the electron acceptor side to the nanotube. Spectral and photoluminescence analysis showed that the PS I is bound to a single-walled carbon nanotube, which was confirmed by transmission electron microscopy. Photocurrent observation proved that the photoexcited electron originated from PSI and transferred to the carbon nanotube with light irradiation, which also confirmed its orientated conjugation. The PS I-carbon nanotube conjugate will be a useful nano-optoelectronic device for the development of artificial systems.
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Affiliation(s)
- Daisuke Nii
- Department of Physics, Graduate School of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo, 162-8601, Japan
| | - Mariko Miyachi
- Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Yuichiro Shimada
- Department of Industrial Chemistry, Faculty of Engineering, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo, 162-8601, Japan
| | - Yosuke Nozawa
- Department of Physics, Faculty of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo, 162-8601, Japan
| | - Masahiro Ito
- Department of Physics, Graduate School of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo, 162-8601, Japan
| | - Yoshikazu Homma
- Department of Physics, Graduate School of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo, 162-8601, Japan
| | - Shu Ikehira
- Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Yoshinori Yamanoi
- Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Hiroshi Nishihara
- Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Tatsuya Tomo
- Department of Physics, Graduate School of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo, 162-8601, Japan.
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14
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Ashraf I, Konrad A, Lokstein H, Skandary S, Metzger M, Djouda JM, Maurer T, Adam PM, Meixner AJ, Brecht M. Temperature dependence of metal-enhanced fluorescence of photosystem I from Thermosynechococcus elongatus. NANOSCALE 2017; 9:4196-4204. [PMID: 28287218 DOI: 10.1039/c6nr08762k] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We report the temperature dependence of metal-enhanced fluorescence (MEF) of individual photosystem I (PSI) complexes from Thermosynechococcus elongatus (T. elongatus) coupled to gold nanoparticles (AuNPs). A strong temperature dependence of shape and intensity of the emission spectra is observed when PSI is coupled to AuNPs. For each temperature, the enhancement factor (EF) is calculated by comparing the intensity of individual AuNP-coupled PSI to the mean intensity of 'uncoupled' PSI. At cryogenic temperature (1.6 K) the average EF was 4.3-fold. Upon increasing the temperature to 250 K the EF increases to 84-fold. Single complexes show even higher EFs up to 441.0-fold. At increasing temperatures the different spectral pools of PSI from T. elongatus become distinguishable. These pools are affected differently by the plasmonic interactions and show different enhancements. The remarkable increase of the EFs is explained by a rate model including the temperature dependence of the fluorescence yield of PSI and the spectral overlap between absorption and emission spectra of AuNPs and PSI, respectively.
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Affiliation(s)
- Imran Ashraf
- IPTC and LISA+ Center, University of Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany.
| | - Alexander Konrad
- IPTC and LISA+ Center, University of Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany.
| | - Heiko Lokstein
- Department of Chemical Physics and Optics, Charles University, Ke Karlovu 3, 12116 Prague, Czech Republic
| | - Sepideh Skandary
- IPTC and LISA+ Center, University of Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany.
| | - Michael Metzger
- IPTC and LISA+ Center, University of Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany.
| | - Joseph M Djouda
- Laboratory of Nanotechnology, Instrumentation and Optics, University of Technology of Troyes, 12 rue Marie Curie, 10004 Troyes, France
| | - Thomas Maurer
- Laboratory of Nanotechnology, Instrumentation and Optics, University of Technology of Troyes, 12 rue Marie Curie, 10004 Troyes, France
| | - Pierre M Adam
- Laboratory of Nanotechnology, Instrumentation and Optics, University of Technology of Troyes, 12 rue Marie Curie, 10004 Troyes, France
| | - Alfred J Meixner
- IPTC and LISA+ Center, University of Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany.
| | - Marc Brecht
- IPTC and LISA+ Center, University of Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany.
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15
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Bennett T, Niroomand H, Pamu R, Ivanov I, Mukherjee D, Khomami B. Elucidating the role of methyl viologen as a scavenger of photoactivated electrons from photosystem I under aerobic and anaerobic conditions. Phys Chem Chem Phys 2016; 18:8512-21. [DOI: 10.1039/c6cp00049e] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We present electrochemical investigations into the role of dissolved O2 in electrolyte solutions in scavenging photoactivated electrons from photosystem I (PS I) while using methyl viologen (MV2+) as the redox mediator.
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Affiliation(s)
- Tyler Bennett
- Materials Research and Innovation Laboratory (MRAIL)
- Department of Chemical and Biomolecular Engineering
- University of Tennessee
- Knoxville
- USA
| | - Hanieh Niroomand
- Materials Research and Innovation Laboratory (MRAIL)
- Department of Chemical and Biomolecular Engineering
- University of Tennessee
- Knoxville
- USA
| | - Ravi Pamu
- Department of Mechanical
- Aerospace and Biomedical Engineering
- University of Tennessee
- Knoxville
- USA
| | - Ilia Ivanov
- Center for Nanophase Materials Sciences (CNMS)
- Oak Ridge National Laboratory (ORNL)
- Oak Ridge
- USA
| | - Dibyendu Mukherjee
- Materials Research and Innovation Laboratory (MRAIL)
- Department of Chemical and Biomolecular Engineering
- University of Tennessee
- Knoxville
- USA
| | - Bamin Khomami
- Materials Research and Innovation Laboratory (MRAIL)
- Department of Chemical and Biomolecular Engineering
- University of Tennessee
- Knoxville
- USA
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16
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17
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LeBlanc G, Gizzie E, Yang S, Cliffel DE, Jennings GK. Photosystem I protein films at electrode surfaces for solar energy conversion. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:10990-11001. [PMID: 24576007 DOI: 10.1021/la500129q] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Over the course of a few billion years, nature has developed extraordinary nanomaterials for the efficient conversion of solar energy into chemical energy. One of these materials, photosystem I (PSI), functions as a photodiode capable of generating a charge separation with nearly perfect quantum efficiency. Because of the favorable properties and natural abundance of PSI, researchers around the world have begun to study how this protein complex can be integrated into modern solar energy conversion devices. This feature article describes some of the recent materials and methods that have led to dramatic improvements (over several orders of magnitude) in the photocurrents and photovoltages of biohybrid electrodes based on PSI, with an emphasis on the research activities in our laboratory.
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Affiliation(s)
- Gabriel LeBlanc
- Departments of †Chemistry and ‡Chemical and Biomolecular Engineering, Vanderbilt University , Nashville, Tennessee 37235, United States
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18
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Kim Y, Shin SA, Lee J, Yang KD, Nam KT. Hybrid system of semiconductor and photosynthetic protein. NANOTECHNOLOGY 2014; 25:342001. [PMID: 25091409 DOI: 10.1088/0957-4484/25/34/342001] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Photosynthetic protein has the potential to be a new attractive material for solar energy absorption and conversion. The development of semiconductor/photosynthetic protein hybrids is an example of recent progress toward efficient, clean and nanostructured photoelectric systems. In the review, two biohybrid systems interacting through different communicating methods are addressed: (1) a photosynthetic protein immobilized semiconductor electrode operating via electron transfer and (2) a hybrid of semiconductor quantum dots and photosynthetic protein operating via energy transfer. The proper selection of materials and functional and structural modification of the components and optimal conjugation between them are the main issues discussed in the review. In conclusion, we propose the direction of future biohybrid systems for solar energy conversion systems, optical biosensors and photoelectric devices.
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Darby E, LeBlanc G, Gizzie EA, Winter KM, Jennings GK, Cliffel DE. Photoactive films of photosystem I on transparent reduced graphene oxide electrodes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:8990-4. [PMID: 25029217 DOI: 10.1021/la5010616] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Photosystem I (PSI) is a photoactive electron-transport protein found in plants that participates in the process of photosynthesis. Because of PSI's abundance in nature and its efficiency with charge transfer and separation, there is a great interest in applying the protein in photoactive electrodes. Here, we developed a completely organic, transparent, conductive electrode using reduced graphene oxide (RGO) on which a multilayer of PSI could be deposited. The resulting photoactive electrode demonstrated current densities comparable to that of a gold electrode modified with a multilayer film of PSI and significantly higher than that of a graphene electrode modified with a monolayer film of PSI. The relatively large photocurrents produced by integrating PSI with RGO and using an opaque, organic mediator can be applied to the facile production of more economic solar energy conversion devices.
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Affiliation(s)
- Emily Darby
- Department of Chemistry and ‡Department of Chemical and Biomolecular Engineering, Vanderbilt University , Nashville, Tennessee 37235, United States
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20
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Nguyen K, Bruce BD. Growing green electricity: progress and strategies for use of photosystem I for sustainable photovoltaic energy conversion. BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS 2014; 1837:1553-66. [PMID: 24388916 DOI: 10.1016/j.bbabio.2013.12.013] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2013] [Revised: 12/17/2013] [Accepted: 12/25/2013] [Indexed: 10/25/2022]
Abstract
Oxygenic photosynthesis is driven via sequential action of Photosystem II (PSII) and (PSI)reaction centers via the Z-scheme. Both of these pigment-membrane protein complexes are found in cyanobacteria, algae, and plants. Unlike PSII, PSI is remarkably stable and does not undergo limiting photo-damage. This stability, as well as other fundamental structural differences, makes PSI the most attractive reaction centers for applied photosynthetic applications. These applied applications exploit the efficient light harvesting and high quantum yield of PSI where the isolated PSI particles are redeployed providing electrons directly as a photocurrent or, via a coupled catalyst to yield H₂. Recent advances in molecular genetics, synthetic biology, and nanotechnology have merged to allow PSI to be integrated into a myriad of biohybrid devices. In photocurrent producing devices, PSI has been immobilized onto various electrode substrates with a continuously evolving toolkit of strategies and novel reagents. However, these innovative yet highly variable designs make it difficult to identify the rate-limiting steps and/or components that function as bottlenecks in PSI-biohybrid devices. In this study we aim to highlight these recent advances with a focus on identifying the similarities and differences in electrode surfaces, immobilization/orientation strategies, and artificial redox mediators. Collectively this work has been able to maintain an annual increase in photocurrent density (Acm⁻²) of ~10-fold over the past decade. The potential drawbacks and attractive features of some of these schemes are also discussed with their feasibility on a large-scale. As an environmentally benign and renewable resource, PSI may provide a new sustainable source of bioenergy. This article is part of a special issue entitled: photosynthesis research for sustainability: keys to produce clean energy.
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Affiliation(s)
- Khoa Nguyen
- Department of Biochemistry and Cellular and Molecular Biology, University of Tennessee, Knoxville, TN 37996, USA
| | - Barry D Bruce
- Department of Biochemistry and Cellular and Molecular Biology, University of Tennessee, Knoxville, TN 37996, USA; Department of Microbiology, University of Tennessee, Knoxville, TN 37996, USA; Bredesen Center for Interdisciplinary Research and Education, University of Tennessee, Knoxville, TN 37996, USA.
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21
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The peak effect of the photocurrent on the concentration of electron mediator (para-benzoquinone) in thylakoids. Electrochim Acta 2013. [DOI: 10.1016/j.electacta.2013.09.079] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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22
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El Hadj K, Bertoncini P, Chauvet O. pH-Sensitive photoinduced energy transfer from bacteriorhodopsin to single-walled carbon nanotubes in SWNT-bR hybrids. ACS NANO 2013; 7:8743-8752. [PMID: 24011351 DOI: 10.1021/nn403092r] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Energy transfer mechanisms in noncovalently bound bacteriorhodopsin/single-walled carbon nanotube (SWNT) hybrids are investigated using optical absorption and photoluminescence excitation measurements. The morphology of the hybrids was investigated by atomic force microscopy. In this study, proteins are immobilized onto the sidewall of the carbon nanotubes using a sodium cholate suspension-dialysis method that maintains the intrinsic optical and fluorescence properties of both molecules. The hybrids are stable in aqueous solutions for pH ranging from 4.2 to 9 and exhibit photoluminescence properties that are pH-dependent. The study reveals that energy transfer from bacteriorhodopsin to carbon nanotubes takes place. So, at pH higher than 5 and up to 9, the SWNTs absorb the photons emitted by the aromatic residues of the protein, inducing a strong increase in intensity of the E11 emissions of SWNTs through their E33 and E44 excitations. From pH = 4.2 to pH = 5, the protein fluorescence is strongly quenched whatever the emission wavelengths, while additional fluorescence features appear at excitation wavelengths ranging from 660 to 680 nm and at 330 nm. The presence of these features is attributed to a resonance energy transfer mechanism that has an efficiency of 0.94 ± 0.02. More, by increasing the pH of the dispersion, the fluorescence characteristics become those observed at higher pH values and vice versa.
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Affiliation(s)
- Karim El Hadj
- Institut des Matériaux Jean Rouxel, Nantes Université , CNRS 2 Rue de la Houssinière, BP 32229, 44322 Nantes, France
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23
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Gerster D, Reichert J, Bi H, Barth JV, Kaniber SM, Holleitner AW, Visoly-Fisher I, Sergani S, Carmeli I. Photocurrent of a single photosynthetic protein. NATURE NANOTECHNOLOGY 2012; 7:673-6. [PMID: 23023644 DOI: 10.1038/nnano.2012.165] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2012] [Accepted: 08/28/2012] [Indexed: 05/03/2023]
Abstract
Photosynthesis is used by plants, algae and bacteria to convert solar energy into stable chemical energy. The initial stages of this process--where light is absorbed and energy and electrons are transferred--are mediated by reaction centres composed of chlorophyll and carotenoid complexes. It has been previously shown that single small molecules can be used as functional components in electric and optoelectronic circuits, but it has proved difficult to control and probe individual molecules for photovoltaic and photoelectrochemical applications. Here, we show that the photocurrent generated by a single photosynthetic protein-photosystem I-can be measured using a scanning near-field optical microscope set-up. One side of the protein is anchored to a gold surface that acts as an electrode, and the other is contacted by a gold-covered glass tip. The tip functions as both counter electrode and light source. A photocurrent of ∼10 pA is recorded from the covalently bound single-protein junctions, which is in agreement with the internal electron transfer times of photosystem I.
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Affiliation(s)
- Daniel Gerster
- Physik-Department E20, Technische Universität München, James-Franck Strasse, D-85748 Garching, Germany
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24
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Knyazev A, Louise L, Veber M, Langevin D, Filoramo A, Prina-Mello A, Campidelli S. Selective adsorption of proteins on single-wall carbon nanotubes by using a protective surfactant. Chemistry 2011; 17:14663-71. [PMID: 22095560 DOI: 10.1002/chem.201101182] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2011] [Revised: 08/19/2011] [Indexed: 01/03/2023]
Abstract
The dispersion of highly hydrophobic carbon materials such as carbon nanotubes in biological media is a challenging issue. Indeed, the nonspecific adsorption of proteins occurs readily when the nanotubes are introduced in biological media; therefore, a methodology to control adsorption is in high demand. To address this issue, we developed a bifunctional linker derived from pyrene that selectively enables or prevents the adsorption of proteins on single-wall carbon nanotubes (SWNTs). We demonstrated that it is possible to decrease or completely suppress the adsorption of proteins on the nanotube sidewall by using proper functionalization (either covalent or noncovalent). By subsequently activating the functional groups on the nanotube derivatives, protein adsorption can be recovered and, therefore, controlled. Our approach is simple, straightforward, and potentially suitable for other biomolecules that contain thio or amino groups available for coupling.
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Affiliation(s)
- Anton Knyazev
- Université Paris 11, Laboratoire de Physique des Solides, UMR 8502, 91405 Orsay, France.
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25
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Kim I, Bender SL, Hranisavljevic J, Utschig LM, Huang L, Wiederrecht GP, Tiede DM. Metal nanoparticle plasmon-enhanced light-harvesting in a photosystem I thin film. NANO LETTERS 2011; 11:3091-8. [PMID: 21714495 DOI: 10.1021/nl2010109] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Silver metal nanoparticle (NP) enhanced fluorescence is investigated in thin films of cyanobacterial Photosystem I trimer complexes (PSI) by correlating confocal laser scanning microscopy, dark-field imaging, and fluorescence lifetime measurements. PSI represents an interesting light-harvesting complex with a 20 nm diameter that is not uniformly contained within the surface-localized plasmon field of the NPs. With weak far-field illumination, 5- to 20-fold fluorescence enhancement is observed for PSI complexes adjacent to NPs, arising from efficient nanoparticle light collection and subsequent localized, surface plasmon excitation of PSI. Enhanced PSI fluorescence is detected most prominently near "rafts" of aggregated NPs that more completely fill the confocal field of view. These results demonstrate opportunities to probe energy transfer within photosynthetic complexes using plasmonic excitation and to design nanostructures for optimizing artificial light-harvesting systems.
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Affiliation(s)
- Iltai Kim
- Center for Nanoscale Materials, Argonne National Laboratory, Argonne, Illinois, United States
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26
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Clavé G, Campidelli S. Efficient covalent functionalisation of carbon nanotubes: the use of “click chemistry”. Chem Sci 2011. [DOI: 10.1039/c1sc00342a] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
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27
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Menzel R, Tran MQ, Menner A, Kay CWM, Bismarck A, Shaffer MSP. A versatile, solvent-free methodology for the functionalisation of carbon nanotubes. Chem Sci 2010. [DOI: 10.1039/c0sc00287a] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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