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Ruiz GCM, do Carmo Morato LF, Pazin WM, Milano F, Constantino CJL, Valli L, Giotta L. Chemical and morphological effects of the contraceptive hormone 17 α-ethynylestradiol on fluid lipid membranes. Colloids Surf B Biointerfaces 2021; 204:111794. [PMID: 33940520 DOI: 10.1016/j.colsurfb.2021.111794] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Revised: 03/03/2021] [Accepted: 04/24/2021] [Indexed: 11/30/2022]
Abstract
The lack of studies involving the effects in human health associated with the chronic ingestion of pollutants lead to the path of investigating the action of these compounds in cell membrane models. We demonstrated the interaction (causes and consequences) of the hormone 17 α-ethinylestradiol (EE2) with lipid monolayers (prepared as Langmuir films) and bilayers prepared as small unilamellar vesicles (SUVs) and giant unilamellar vesicles (GUVs). Both fluidity and majority chemical composition of real plasma cell membrane were guaranteed using the phospholipid 1-palmitoil-2-oleoyl-sn-glycero-3-phosphatidylcholine (POPC). Surface pressure-mean molecular area (π-A) isotherms and PM-IRRAS measurements highlighted the strong interaction of EE2 with POPC monolayers, leading the hormone to remain at the air/water interface and promoting its penetration into the phospholipid hydrophobic chains. In the case of bilayers, the entrance of the hormone inside the SUV is likely facilitated by their high curvature. In GUVs, EE2 was responsible for changes in the spherical shape, forming structures like buds and lipid protrusions. The set of results indicates the strong effects of EE2 on fluid membranes, which is an important feature to predict its damage in human cells.
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Affiliation(s)
- Gilia Cristine Marques Ruiz
- Department of Physics, School of Technology and Applied Sciences, São Paulo State University (UNESP), Presidente Prudente, SP, Brazil.
| | - Luis Fernando do Carmo Morato
- Department of Physics, School of Technology and Applied Sciences, São Paulo State University (UNESP), Presidente Prudente, SP, Brazil
| | - Wallance Moreira Pazin
- Department of Physics, School of Technology and Applied Sciences, São Paulo State University (UNESP), Presidente Prudente, SP, Brazil
| | - Francesco Milano
- Institute of Sciences of Food Production, Italian National Research Council (CNR-ISPA), S.P. Lecce-Monteroni, Lecce, I-73100, Italy
| | - Carlos José Leopoldo Constantino
- Department of Physics, School of Technology and Applied Sciences, São Paulo State University (UNESP), Presidente Prudente, SP, Brazil
| | - Ludovico Valli
- Department of Biological and Environmental Sciences and Technologies (DiSTeBA), University of Salento, S.P. Lecce-Monteroni, Lecce, I-73100, Italy; Consorzio Interuniversitario Nazionale per la Scienza e Tecnologia dei Materiali (INSTM), Unità di Lecce, S.P. Lecce-Monteroni, Lecce, I-73100, Italy
| | - Livia Giotta
- Department of Biological and Environmental Sciences and Technologies (DiSTeBA), University of Salento, S.P. Lecce-Monteroni, Lecce, I-73100, Italy; Consorzio Interuniversitario Nazionale per la Scienza e Tecnologia dei Materiali (INSTM), Unità di Lecce, S.P. Lecce-Monteroni, Lecce, I-73100, Italy
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2
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Exploiting the photoactivity of bacterial reaction center to investigate liposome dynamics. Photochem Photobiol Sci 2021; 20:321-326. [PMID: 33721250 DOI: 10.1007/s43630-021-00011-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Accepted: 01/08/2021] [Indexed: 10/22/2022]
Abstract
Charge recombination kinetics of bacterial photosynthetic protein Reaction Center displays an exquisite sensitivity to the actual occupancy of ubiquinone-10 in its QB-binding site. Here, we have exploited such phenomenon for assessing the growth and the aggregation/fusion of phosphocholine vesicles embedding RC in their membrane, when treated with sodium oleate.
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3
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Di Lauro M, Buscemi G, Bianchi M, De Salvo A, Berto M, Carli S, Farinola GM, Fadiga L, Biscarini F, Trotta M. Photovoltage generation in enzymatic bio-hybrid architectures. ACTA ACUST UNITED AC 2020. [DOI: 10.1557/adv.2019.491] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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4
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Charge Recombination Kinetics of Bacterial Photosynthetic Reaction Centres Reconstituted in Liposomes: Deterministic Versus Stochastic Approach. DATA 2020. [DOI: 10.3390/data5020053] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
In this theoretical work, we analyse the kinetics of charge recombination reaction after a light excitation of the Reaction Centres extracted from the photosynthetic bacterium Rhodobacter sphaeroides and reconstituted in small unilamellar phospholipid vesicles. Due to the compartmentalized nature of liposomes, vesicles may exhibit a random distribution of both ubiquinone molecules and the Reaction Centre protein complexes that can produce significant differences on the local concentrations from the average expected values. Moreover, since the amount of reacting species is very low in compartmentalized lipid systems the stochastic approach is more suitable to unveil deviations of the average time behaviour of vesicles from the deterministic time evolution.
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5
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la Gatta S, Milano F, Farinola GM, Agostiano A, Di Donato M, Lapini A, Foggi P, Trotta M, Ragni R. A highly efficient heptamethine cyanine antenna for photosynthetic Reaction Center: From chemical design to ultrafast energy transfer investigation of the hybrid system. BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS 2019; 1860:350-359. [DOI: 10.1016/j.bbabio.2019.01.009] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Revised: 12/11/2018] [Accepted: 01/26/2019] [Indexed: 12/11/2022]
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6
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Ragni R, Leone G, la Gatta S, Rizzo G, Lo Presti M, De Leo V, Milano F, Trotta M, Farinola GM. A heptamethine cyanine dye suitable as antenna in biohybrids based on bacterial photosynthetic reaction center. ACTA ACUST UNITED AC 2018. [DOI: 10.1557/adv.2018.640] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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7
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Purple-bacterial photosynthetic reaction centers and quantum‐dot hybrid‐assemblies in lecithin liposomes and thin films. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2016; 164:73-82. [DOI: 10.1016/j.jphotobiol.2016.09.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2016] [Accepted: 09/06/2016] [Indexed: 11/18/2022]
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8
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Hassan Omar O, la Gatta S, Tangorra RR, Milano F, Ragni R, Operamolla A, Argazzi R, Chiorboli C, Agostiano A, Trotta M, Farinola GM. Synthetic Antenna Functioning As Light Harvester in the Whole Visible Region for Enhanced Hybrid Photosynthetic Reaction Centers. Bioconjug Chem 2016; 27:1614-23. [DOI: 10.1021/acs.bioconjchem.6b00175] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
| | - Simona la Gatta
- Dipartimento
di Chimica, Università degli Studi di Bari “Aldo Moro”, 70125 Bari, Italy
| | | | | | - Roberta Ragni
- Dipartimento
di Chimica, Università degli Studi di Bari “Aldo Moro”, 70125 Bari, Italy
| | - Alessandra Operamolla
- Dipartimento
di Chimica, Università degli Studi di Bari “Aldo Moro”, 70125 Bari, Italy
| | - Roberto Argazzi
- Istituto
di Sintesi Organica e Fotoreattività, Consiglio Nazionale delle Ricerche, 44121 Ferrara, Italy
| | - Claudio Chiorboli
- Istituto
di Sintesi Organica e Fotoreattività, Consiglio Nazionale delle Ricerche, 44121 Ferrara, Italy
| | - Angela Agostiano
- Dipartimento
di Chimica, Università degli Studi di Bari “Aldo Moro”, 70125 Bari, Italy
| | | | - Gianluca M. Farinola
- Dipartimento
di Chimica, Università degli Studi di Bari “Aldo Moro”, 70125 Bari, Italy
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Szabó T, Magyar M, Hajdu K, Dorogi M, Nyerki E, Tóth T, Lingvay M, Garab G, Hernádi K, Nagy L. Structural and Functional Hierarchy in Photosynthetic Energy Conversion-from Molecules to Nanostructures. NANOSCALE RESEARCH LETTERS 2015; 10:458. [PMID: 26619890 PMCID: PMC4666181 DOI: 10.1186/s11671-015-1173-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/29/2015] [Accepted: 11/23/2015] [Indexed: 06/05/2023]
Abstract
Basic principles of structural and functional requirements of photosynthetic energy conversion in hierarchically organized machineries are reviewed. Blueprints of photosynthesis, the energetic basis of virtually all life on Earth, can serve the basis for constructing artificial light energy-converting molecular devices. In photosynthetic organisms, the conversion of light energy into chemical energy takes places in highly organized fine-tunable systems with structural and functional hierarchy. The incident photons are absorbed by light-harvesting complexes, which funnel the excitation energy into reaction centre (RC) protein complexes containing redox-active chlorophyll molecules; the primary charge separations in the RCs are followed by vectorial transport of charges (electrons and protons) in the photosynthetic membrane. RCs possess properties that make their use in solar energy-converting and integrated optoelectronic systems feasible. Therefore, there is a large interest in many laboratories and in the industry toward their use in molecular devices. RCs have been bound to different carrier matrices, with their photophysical and photochemical activities largely retained in the nano-systems and with electronic connection to conducting surfaces. We show examples of RCs bound to carbon-based materials (functionalized and non-functionalized single- and multiwalled carbon nanotubes), transitional metal oxides (ITO) and conducting polymers and porous silicon and characterize their photochemical activities. Recently, we adapted several physical and chemical methods for binding RCs to different nanomaterials. It is generally found that the P(+)(QAQB)(-) charge pair, which is formed after single saturating light excitation is stabilized after the attachment of the RCs to the nanostructures, which is followed by slow reorganization of the protein structure. Measuring the electric conductivity in a direct contact mode or in electrochemical cell indicates that there is an electronic interaction between the protein and the inorganic carrier matrices. This can be a basis of sensing element of bio-hybrid device for biosensor and/or optoelectronic applications.
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Affiliation(s)
- Tibor Szabó
- Department of Medical Physics and Informatics, University of Szeged, Rerrich B. tér 1., H-6721, Szeged, Hungary.
| | - Melinda Magyar
- Department of Medical Physics and Informatics, University of Szeged, Rerrich B. tér 1., H-6721, Szeged, Hungary.
| | - Kata Hajdu
- Department of Medical Physics and Informatics, University of Szeged, Rerrich B. tér 1., H-6721, Szeged, Hungary.
| | - Márta Dorogi
- Biological Research Center, Hungarian Academy of Sciences, Temesvari krt.62, H-6726, Szeged, Hungary.
- Biophotonics R&D Ltd., Temesvari krt.62, H-6726, Szeged, Hungary.
| | - Emil Nyerki
- Department of Medical Physics and Informatics, University of Szeged, Rerrich B. tér 1., H-6721, Szeged, Hungary.
| | - Tünde Tóth
- Department of Medical Physics and Informatics, University of Szeged, Rerrich B. tér 1., H-6721, Szeged, Hungary.
| | - Mónika Lingvay
- Department of Medical Physics and Informatics, University of Szeged, Rerrich B. tér 1., H-6721, Szeged, Hungary.
| | - Győző Garab
- Biological Research Center, Hungarian Academy of Sciences, Temesvari krt.62, H-6726, Szeged, Hungary.
- Biophotonics R&D Ltd., Temesvari krt.62, H-6726, Szeged, Hungary.
| | - Klára Hernádi
- Department of Applied and Environmental Chemistry, University of Szeged, Szeged, Hungary.
| | - László Nagy
- Department of Medical Physics and Informatics, University of Szeged, Rerrich B. tér 1., H-6721, Szeged, Hungary.
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Semiquinone oscillations as a tool for investigating the ubiquinone binding to photosynthetic reaction centers. EUROPEAN BIOPHYSICS JOURNAL: EBJ 2015; 44:183-92. [DOI: 10.1007/s00249-015-1013-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2014] [Revised: 02/04/2015] [Accepted: 02/05/2015] [Indexed: 01/04/2023]
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11
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Mastrogiacomo D, Lenucci MS, Bonfrate V, Di Carolo M, Piro G, Valli L, Rescio L, Milano F, Comparelli R, De Leo V, Giotta L. Lipid/detergent mixed micelles as a tool for transferring antioxidant power from hydrophobic natural extracts into bio-deliverable liposome carriers: the case of lycopene rich oleoresins. RSC Adv 2015. [DOI: 10.1039/c4ra12254b] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Lipid/detergent mixed micelles promote and modulate the incorporation of carotenoids from natural oleoresins into bio-deliverable liposome carriers.
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Affiliation(s)
- Disma Mastrogiacomo
- Dipartimento di Scienze e Tecnologie Biologiche e Ambientali
- Università del Salento
- I-73100 Lecce
- Italy
| | | | - Valentina Bonfrate
- Dipartimento di Scienze e Tecnologie Biologiche e Ambientali
- Università del Salento
- I-73100 Lecce
- Italy
| | - Marialuisa Di Carolo
- Dipartimento di Scienze e Tecnologie Biologiche e Ambientali
- Università del Salento
- I-73100 Lecce
- Italy
| | - Gabriella Piro
- Dipartimento di Scienze e Tecnologie Biologiche e Ambientali
- Università del Salento
- I-73100 Lecce
- Italy
| | - Ludovico Valli
- Dipartimento di Scienze e Tecnologie Biologiche e Ambientali
- Università del Salento
- I-73100 Lecce
- Italy
| | | | - Francesco Milano
- CNR – Istituto per i Processi Chimico-Fisici
- Sezione di Bari
- I–70126 Bari
- Italy
| | - Roberto Comparelli
- CNR – Istituto per i Processi Chimico-Fisici
- Sezione di Bari
- I–70126 Bari
- Italy
| | - Vincenzo De Leo
- CNR – Istituto per i Processi Chimico-Fisici
- Sezione di Bari
- I–70126 Bari
- Italy
- Dipartimento di Chimica
| | - Livia Giotta
- Dipartimento di Scienze e Tecnologie Biologiche e Ambientali
- Università del Salento
- I-73100 Lecce
- Italy
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12
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Tangorra RR, Operamolla A, Milano F, Omar OH, Henrard J, Comparelli R, Italiano F, Agostiano A, De Leo V, Marotta R, Falqui A, Farinola GM, Trotta M. Assembly of a photosynthetic reaction center with ABA tri-block polymersomes: highlights on protein localization. Photochem Photobiol Sci 2015. [DOI: 10.1039/c5pp00189g] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The micelle-to-vesicle transition technique was used to reconstitute the integral membrane protein photosynthetic reaction center (RC) and the position of the RC in the polymersome vesicle was investigated.
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13
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Zagidullin VE, Lukashev EP, Knox PP, Seifullina NK, Sokolova OS, Pechnikova EV, Lokstein H, Paschenko VZ. Properties of hybrid hybrid complexes composed of photosynthetic reaction centers from the purple bacterium Rhodobacter sphaeroides and quantum dots in lecithin liposomes. BIOCHEMISTRY (MOSCOW) 2014; 79:1183-91. [DOI: 10.1134/s0006297914110054] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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14
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The binding of quinone to the photosynthetic reaction centers: kinetics and thermodynamics of reactions occurring at the QB-site in zwitterionic and anionic liposomes. EUROPEAN BIOPHYSICS JOURNAL: EBJ 2014; 43:301-15. [PMID: 24824111 DOI: 10.1007/s00249-014-0963-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2014] [Revised: 04/07/2014] [Accepted: 04/25/2014] [Indexed: 12/29/2022]
Abstract
Liposomes represent a versatile biomimetic environment for studying the interaction between integral membrane proteins and hydrophobic ligands. In this paper, the quinone binding to the QB-site of the photosynthetic reaction centers (RC) from Rhodobacter sphaeroides has been investigated in liposomes prepared with either the zwitterionic phosphatidylcholine (PC) or the negatively charged phosphatidylglycerol (PG) to highlight the role of the different phospholipid polar heads. Quinone binding (K Q) and interquinone electron transfer (L AB) equilibrium constants in the two type of liposomes were obtained by charge recombination reaction of QB-depleted RC in the presence of increasing amounts of ubiquinone-10 over the temperature interval 6-35 °C. The kinetic of the charge recombination reactions has been fitted by numerically solving the ordinary differential equations set associated with a detailed kinetic scheme involving electron transfer reactions coupled with quinone release and uptake. The entire set of traces at each temperature was accurately fitted using the sole quinone release constants (both in a neutral and a charge separated state) as adjustable parameters. The temperature dependence of the quinone exchange rate at the QB-site was, hence, obtained. It was found that the quinone exchange regime was always fast for PC while it switched from slow to fast in PG as the temperature rose above 20 °C. A new method was introduced in this paper for the evaluation of constant K Q using the area underneath the charge recombination traces as the indicator of the amount of quinone bound to the QB-site.
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15
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De Leo V, Catucci L, Falqui A, Marotta R, Striccoli M, Agostiano A, Comparelli R, Milano F. Hybrid assemblies of fluorescent nanocrystals and membrane proteins in liposomes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:1599-1608. [PMID: 24460372 DOI: 10.1021/la404160b] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Because of the growing potential of nanoparticles in biological and medical applications, tuning and directing their properties toward a high compatibility with the aqueous biological milieu is of remarkable relevance. Moreover, the capability to combine nanocrystals (NCs) with biomolecules, such as proteins, offers great opportunities to design hybrid systems for both nanobiotechnology and biomedical technology. Here we report on the application of the micelle-to-vesicle transition (MVT) method for incorporation of hydrophobic, red-emitting CdSe@ZnS NCs into the bilayer of liposomes. This method enabled the construction of a novel hybrid proteo-NC-liposome containing, as model membrane protein, the photosynthetic reaction center (RC) of Rhodobacter sphaeroides. Electron microscopy confirmed the insertion of NCs within the lipid bilayer without significantly altering the structure of the unilamellar vesicles. The resulting aqueous NC-liposome suspensions showed low turbidity and kept unaltered the wavelengths of absorbance and emission peaks of the native NCs. A relative NC fluorescence quantum yield up to 8% was preserved after their incorporation in liposomes. Interestingly, in proteo-NC-liposomes, RC is not denatured by Cd-based NCs, retaining its structural and functional integrity as shown by absorption spectra and flash-induced charge recombination kinetics. The outlined strategy can be extended in principle to any suitably sized hydrophobic NC with similar surface chemistry and to any integral protein complex. Furthermore, the proposed approach could be used in nanomedicine for the realization of theranostic systems and provides new, interesting perspectives for understanding the interactions between integral membrane proteins and nanoparticles, i.e., in nanotoxicology studies.
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Affiliation(s)
- Vincenzo De Leo
- Department of Chemistry, Università degli Studi di Bari , Via Orabona 4, 70126 Bari, Italy
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16
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Light induced transmembrane proton gradient in artificial lipid vesicles reconstituted with photosynthetic reaction centers. J Bioenerg Biomembr 2012; 44:373-84. [DOI: 10.1007/s10863-012-9435-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2011] [Accepted: 03/19/2012] [Indexed: 10/28/2022]
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