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Yudovich S, Marzouqe A, Kantorovitsch J, Teblum E, Chen T, Enderlein J, Miller EW, Weiss S. Electrically Controlling and Optically Observing the Membrane Potential of Supported Lipid Bilayers. Biophys J 2022; 121:2624-2637. [PMID: 35619563 DOI: 10.1016/j.bpj.2022.05.037] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2021] [Revised: 04/26/2022] [Accepted: 05/23/2022] [Indexed: 11/02/2022] Open
Abstract
Supported lipid bilayers are a well-developed model system for the study of membranes and their associated proteins, such as membrane channels, enzymes, and receptors. These versatile model membranes can be made from various components, ranging from simple synthetic phospholipids to complex mixtures of constituents, mimicking the cell membrane with its relevant physiochemical and molecular phenomena. In addition, the high stability of supported lipid bilayers allows for their study via a wide array of experimental probes. In this work, we describe a platform for supported lipid bilayers that is accessible both electrically and optically, and demonstrate direct optical observation of the transmembrane potential of supported lipid bilayers. We show that the polarization of the supported membrane can be electrically controlled and optically probed using voltage-sensitive dyes. Membrane polarization dynamics is understood through electrochemical impedance spectroscopy and the analysis of an equivalent electrical circuit model. In addition, we describe the effect of the conducting electrode layer on the fluorescence of the optical probe through metal-induced energy transfer, and show that while this energy transfer has an adverse effect on the voltage sensitivity of the fluorescent probe, its strong distance dependency allows for axial localization of fluorescent emitters with ultrahigh accuracy. We conclude with a discussion on possible applications of this platform for the study of voltage-dependent membrane proteins and other processes in membrane biology and surface science.
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Affiliation(s)
- Shimon Yudovich
- Department of Physics, Bar-Ilan University, Ramat-Gan, 52900, Israel; Institute for Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat-Gan, 52900, Israel.
| | - Adan Marzouqe
- Institute for Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat-Gan, 52900, Israel; Department of Chemistry, Bar-Ilan University, Ramat-Gan, 52900, Israel
| | - Joseph Kantorovitsch
- Institute for Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat-Gan, 52900, Israel
| | - Eti Teblum
- Institute for Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat-Gan, 52900, Israel
| | - Tao Chen
- Third Institute of Physics-Biophysics, Georg August University, 37077 Göttingen, Germany
| | - Jörg Enderlein
- Third Institute of Physics-Biophysics, Georg August University, 37077 Göttingen, Germany; Cluster of Excellence "Multiscale Bioimaging: from Molecular Machines to Networks of Excitable Cells" (MBExC), Georg August University, Germany
| | - Evan W Miller
- Departments of Chemistry, Molecular & Cell Biology, and Helen Wills Neuroscience Institute, University of California, Berkeley, California 94720, United States
| | - Shimon Weiss
- Department of Physics, Bar-Ilan University, Ramat-Gan, 52900, Israel; Institute for Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat-Gan, 52900, Israel; Departments of Chemistry and Biochemistry, Physiology, and California NanoSystems Institute, University of California Los Angeles, Los Angeles, CA 90095.
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Hoyo J, Guaus E, Torrent-Burgués J, Sanz F. Electrochemistry of LB films of mixed MGDG:UQ on ITO. Bioelectrochemistry 2015; 104:26-34. [DOI: 10.1016/j.bioelechem.2015.02.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2014] [Revised: 02/18/2015] [Accepted: 02/19/2015] [Indexed: 01/07/2023]
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Hoyo J, Guaus E, Torrent-Burgués J, Sanz F. Biomimetic monolayer films of digalactosyldiacylglycerol incorporating plastoquinone. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2015; 1848:1341-51. [PMID: 25771450 DOI: 10.1016/j.bbamem.2015.03.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2014] [Revised: 02/27/2015] [Accepted: 03/04/2015] [Indexed: 10/23/2022]
Abstract
The photosynthesis is the process used by plants and bacteria cells to convert inorganic matter in organic thanks to the light energy. This process consist on several steps, being one of them the electronic transport from the photosystem II to the cytochrome thanks to plastoquinone-9 (PQ). Here we prepare membranes that mimic the characteristics and composition of natural photosynthetic cell membranes and we characterize them in order to obtain the PQ molecules position in the membrane and their electrochemical behaviour. The selected galactolipid is digalactosyldiacylglycerol (DGDG) that represents the 30% of the thylakoid membrane lipid content. The results obtained are worthful for several science fields due to the relevance of galactolipids as anti-algal, anti-viral, anti-tumor and anti-inflammatory agents and the antioxidant and free radical scavenger properties of prenylquinones. Both pure components (DGDG and PQ) and the DGDG:PQ mixtures have been studied using surface pressure-area isotherms. These isotherms give information about the film stability and indicate the thermodynamic behaviour of the mixture and their physical state. The Langmuir-Blodgett (LB) film has been transferred forming a monolayer that mimics the bottom layer of the biological membranes. This monolayer on mica has been topographically characterized using AFM and both the height and the physical state that they present have been obtained. Moreover, these monolayers have been transferred onto ITO that is a hydrophilic substrate with good optical and electrical features, so that, it is suitable for studying the electrochemical behaviour of these systems and it is a good candidate for energy producing devices.
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Affiliation(s)
- Javier Hoyo
- Universitat Politècnica de Catalunya, Dpt. Chemical Engineering, 08222 Terrassa, Barcelona, Spain; Institut de Bioenginyeria de Catalunya (IBEC), 08028 Barcelona, Spain
| | - Ester Guaus
- Universitat Politècnica de Catalunya, Dpt. Chemical Engineering, 08222 Terrassa, Barcelona, Spain
| | - Juan Torrent-Burgués
- Universitat Politècnica de Catalunya, Dpt. Chemical Engineering, 08222 Terrassa, Barcelona, Spain; Institut de Bioenginyeria de Catalunya (IBEC), 08028 Barcelona, Spain.
| | - Fausto Sanz
- Institut de Bioenginyeria de Catalunya (IBEC), 08028 Barcelona, Spain; Universitat de Barcelona, Dpt. Physical-Chemistry, 08028 Barcelona, Spain
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Dewi HA, Meng F, Sana B, Guo C, Norling B, Chen X, Lim S. Investigation of electron transfer from isolated spinach thylakoids to indium tin oxide. RSC Adv 2014. [DOI: 10.1039/c4ra07070d] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The electrons generated by photosynthetic water splitting have been studied for direct electron transfer under light irradiation.
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Affiliation(s)
- Herlina Arianita Dewi
- Division of Bioengineering
- School of Chemical and Biomedical Engineering
- Nanyang Technological University
- 70 Nanyang Drive, Block N1.3, Singapore 637457
| | - Fanben Meng
- School of Materials Science and Engineering
- Nanyang Technological University
- Singapore 639798
| | - Barindra Sana
- Division of Bioengineering
- School of Chemical and Biomedical Engineering
- Nanyang Technological University
- 70 Nanyang Drive, Block N1.3, Singapore 637457
| | - Chunxian Guo
- Division of Bioengineering
- School of Chemical and Biomedical Engineering
- Nanyang Technological University
- 70 Nanyang Drive, Block N1.3, Singapore 637457
| | - Birgitta Norling
- School of Biological Sciences
- Nanyang Technological University
- Singapore 637551
| | - Xiaodong Chen
- School of Materials Science and Engineering
- Nanyang Technological University
- Singapore 639798
| | - Sierin Lim
- Division of Bioengineering
- School of Chemical and Biomedical Engineering
- Nanyang Technological University
- 70 Nanyang Drive, Block N1.3, Singapore 637457
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Hoyo J, Guaus E, Oncins G, Torrent-Burgués J, Sanz F. Incorporation of ubiquinone in supported lipid bilayers on ITO. J Phys Chem B 2013; 117:7498-506. [PMID: 23725098 DOI: 10.1021/jp4004517] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Ubiquinone (UQ) is one of the main electron and proton shuttle molecules in biological systems, and dipalmitoylphosphatidylcholine (DPPC) is one of the most used model lipids. Supported planar bilayers (SPBs) are extensively accepted as biological model membranes. In this study, SPBs have been deposited on ITO, which is a semiconductor with good electrical and optical features. Specifically, topographic atomic force microscopy (AFM) images and force curves have been performed on SPBs with several DPPC:UQ ratios to study the location and the interaction of UQ in the SPB. Additionally, cyclic voltammetry has been used to understand the electrochemical behavior of DPPC:UQ SPBs. Obtained results show that, in our case, UQ is placed in two main different positions in SPBs. First, between the DPPC hydrophobic chains, fact that originates a decrease in the breakthrough force of the bilayer, and the second between the two leaflets that form the SPBs. This second position occurs when increasing the UQ content, fact that eventually forms UQ aggregates at high concentrations. The formation of aggregates produces an expansion of the SPB average height and a bimodal distribution of the breakthrough force. The voltammetric response of UQ depends on its position on the bilayer.
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Affiliation(s)
- Javier Hoyo
- Universitat Politècnica de Catalunya, Dpt. Enginyeria Química, 08222 Terrassa (Barcelona), Spain
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Nikolelis DP, Hianik T, Nikoleli GP. Stabilized Lipid Films in Electrochemical Biosensors. ELECTROANAL 2010. [DOI: 10.1002/elan.201000420] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Kumar K, Tang CS, Rossetti FF, Textor M, Keller B, Vörös J, Reimhult E. Formation of supported lipid bilayers on indium tin oxide for dynamically-patterned membrane-functionalized microelectrode arrays. LAB ON A CHIP 2009; 9:718-725. [PMID: 19224023 DOI: 10.1039/b814281e] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Supported lipid bilayers (SLBs) are ideal platforms for the study of membrane proteins and function. Assembly of functional SLBs in an array format would lead to a breakthrough in high-throughput screening of membrane-associated processes, e.g., drugs binding to transmembrane proteins. We report the formation of SLBs from the rupture of anionic vesicles in the presence of Ca(2+) ions on ITO-coated surfaces and characterise the assembly and SLB properties. Furthermore, the formation, manipulation and regeneration of SLBs adsorbed on ITO microelectrode array spots using an electric potential switch are demonstrated. This platform enables addressable assembly and the study of electrochemically mediated membrane processes in a microarray format which can be regenerated in situ.
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Affiliation(s)
- Karthik Kumar
- BioInterface Group, Laboratory of Surface Science and Technology, Swiss Federal Institute of Technology (ETH), Zürich, CH-8093 Zurich, Switzerland
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He X, Zhu Q, Liao F, Zhu L, Ai Z. Differential Pulse Voltammetric Determination and Application of Square-Wave Voltammetry of yRNA on a CPB-Cellulose Modified Electrode. ELECTROANAL 2007. [DOI: 10.1002/elan.200603860] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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9
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Du L, Liu X, Huang W, Wang E. A study on the interaction between ibuprofen and bilayer lipid membrane. Electrochim Acta 2006. [DOI: 10.1016/j.electacta.2006.03.009] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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10
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Müller WEG, Wendt K, Geppert C, Wiens M, Reiber A, Schröder HC. Novel photoreception system in sponges? Unique transmission properties of the stalk spicules from the hexactinellid Hyalonemasieboldi. Biosens Bioelectron 2005; 21:1149-55. [PMID: 15935634 DOI: 10.1016/j.bios.2005.04.017] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2005] [Revised: 04/22/2005] [Accepted: 04/25/2005] [Indexed: 11/17/2022]
Abstract
Sponges (phylum Porifera) of the classes Hexactinellida and Demospongiae possess a skeleton composed of siliceous spicules, which are synthesized enzymatically. The longest spicules are found among the Hexactinellida, with the stalk spicules (length: 30 cm; diameter: 300 microm) of Hyalonema sieboldi as prominent examples. These spicules are constructed around a central axial filament, which is formed by approximately 40 siliceous layers. The stratified spicules function as optical glass fibers with unique properties. If free-spaced coupled with a white light source (WLS), the entire fiber is illuminated. Special features of the light transmission: (i) only wavelengths between 615 and 1310 nm can pass through the fibers and (ii) light below wavelengths of 615 nm and above 1310 nm is completely cut-off. The transmission efficiency is around 60% (measured at 1080-1100 nm [length of the fiber: 5 cm]). The spicules acts as sharp high- and low-pass filters, suggesting that these silica-based fibers might be involved in a photoreception system. This assumption is supported by the finding that sponges are provided with a bioluminescent system. It is hypothesized that the spicules/siliceous fibers might be involved in a photoreception system in these animals.
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Affiliation(s)
- Werner E G Müller
- Institut für Physiologische Chemie, Abteilung Angewandte Molekularbiologie, Universität, Duesbergweg 6, D-55099 Mainz, Germany.
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11
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Steady-state oxidation of cholesterol catalyzed by cholesterol oxidase in lipid bilayer membranes on platinum electrodes. Anal Chim Acta 2004. [DOI: 10.1016/j.aca.2004.03.030] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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12
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Gong JM, Lin XQ. Electrochemical Determination of Serotonin and the Competitive Adsorption with Dopamine at 5,5-Ditetradecyl-2-(2-trimethylammonioethyl)-1,3-dioxane Bromide Lipid Film Modified by Glassy Carbon Electrode. ANAL SCI 2004; 20:905-9. [PMID: 15228108 DOI: 10.2116/analsci.20.905] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
A novel and effective approach to sensitively determine serotonin, known as 5-hydroxytryptamine (5-HT), has been proposed based on a 5,5-ditetradecyl-2-(2-trimethylammonioethyl)-1,3-dioxane bromide (DTDB) self-assembled lipid bilayer membrane modified glassy carbon electrode (DTDB/GCE). A DTDB/GCE shows the strong electrocatalysis for the oxidation of 5-HT, with the peak potential shifted to less positive value of 0.376 V vs. SCE, and effectively eliminates the interference from ascorbic acid (AA), even in the presence of 100-fold concentration of AA. Differential pulse voltammetry (DPV) gave a linear current for 5-HT from 2.0 x 10(-7) to 1.0 x 10(-5) M. At the DTDB/GCE, the oxidation of 5-HT was controlled by the adsorption process; for 5-HT coexisting with DA, the competitive adsorption was observed.
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Affiliation(s)
- Jing-Ming Gong
- University of Science and Technology of China, Hefei 230026, PR China
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13
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Supported Planar Lipid Bilayers (s-BLMs, sb-BLMs, etc.). ACTA ACUST UNITED AC 2003. [DOI: 10.1016/s0927-5193(03)80057-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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14
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Huang W, Zhang Z, Han X, Tang J, Wang J, Dong S, Wang E. Ion channel behavior of amphotericin B in sterol-free and cholesterol- or ergosterol-containing supported phosphatidylcholine bilayer model membranes investigated by electrochemistry and spectroscopy. Biophys J 2002; 83:3245-55. [PMID: 12496093 PMCID: PMC1302401 DOI: 10.1016/s0006-3495(02)75326-5] [Citation(s) in RCA: 76] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
Abstract
Amphotericin B (AmB) is a popular drug frequently applied in the treatment of systemic fungal infections. In the presence of ruthenium (II) as the maker ion, the behavior of AmB to form ion channels in sterol-free and cholesterol- or ergosterol-containing supported phosphatidylcholine bilayer model membranes were studied by cyclic votammetry, AC impedance spectroscopy, and UV/visible absorbance spectroscopy. Different concentrations of AmB ranging from a molecularly dispersed to a highly aggregated state of the drug were investigated. In a fixed cholesterol or ergosterol content (5 mol %) in glassy carbon electrode-supported model membranes, our results showed that no matter what form of AmB, monomeric or aggregated, AmB could form ion channels in supported ergosterol-containing phosphatidylcholine bilayer model membranes. However, AmB could not form ion channels in its monomeric form in sterol-free and cholesterol-containing supported model membranes. On the one hand, when AmB is present as an aggregated state, it can form ion channels in cholesterol-containing supported model membranes; on the other hand, only when AmB is present as a relatively highly aggregated state can it form ion channels in sterol-free supported phosphatidylcholine bilayer model membranes. The results showed that the state of AmB played an important role in forming ion channels in sterol-free and cholesterol-containing supported phosphatidylcholine bilayer model membranes.
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Affiliation(s)
- Weimin Huang
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China
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Huang W, Zhang Z, Han X, Wang J, Tang J, Dong S, Wang E. Concentration-dependent behavior of nisin interaction with supported bilayer lipid membrane. Biophys Chem 2002; 99:271-9. [PMID: 12408941 DOI: 10.1016/s0301-4622(02)00227-2] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Nisin is a positively charged antibacterial peptide that binds to the negatively charged membranes of gram-positive bacteria. The initial interaction of the peptide with the model membrane of negatively charged DPPG (dipalmitoylphosphatidylglycerol) was studied by cyclic voltammetry and a.c. impedance spectroscopy. Nisin could induce pores in the supported bilayer lipid membrane, thus, it led to the marker ions Fe(CN)(6)(3-/4-) crossing the lipid membrane and giving the redox reaction on the glassy carbon electrode (GCE). Experimental results suggested that the pore formation on supported bilayer lipid membrane was dependent on the concentration of nisin and it included three main concentration stages: low, middling, high concentration.
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Affiliation(s)
- Weimin Huang
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, PR China.
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Besanger T, Zhang Y, Brennan JD. Characterization of Fluorescent Phospholipid Liposomes Entrapped in Sol−Gel Derived Silica. J Phys Chem B 2002. [DOI: 10.1021/jp0263525] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Travis Besanger
- Department of Chemistry, McMaster University, 1280 Main Street West, Hamilton, ON, L8S 4M1 Canada
| | - Ying Zhang
- Department of Chemistry, McMaster University, 1280 Main Street West, Hamilton, ON, L8S 4M1 Canada
| | - John D. Brennan
- Department of Chemistry, McMaster University, 1280 Main Street West, Hamilton, ON, L8S 4M1 Canada
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17
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The lipid bilayer concept and its experimental realization: from soap bubbles, kitchen sink, to bilayer lipid membranes. J Memb Sci 2001. [DOI: 10.1016/s0376-7388(01)00394-5] [Citation(s) in RCA: 103] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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