1
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Baron J, Bauernhofer L, Devenish SRA, Fiedler S, Ilsley A, Riedl S, Zweytick D, Glueck D, Pessentheiner A, Durand G, Keller S. FULL-MDS: Fluorescent Universal Lipid Labeling for Microfluidic Diffusional Sizing. Anal Chem 2022; 95:587-593. [PMID: 36574263 PMCID: PMC9850350 DOI: 10.1021/acs.analchem.2c03168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Microfluidic diffusional sizing (MDS) is a recent and powerful method for determining the hydrodynamic sizes and interactions of biomolecules and nanoparticles. A major benefit of MDS is that it can report the size of a fluorescently labeled target even in mixtures with complex, unpurified samples. However, a limitation of MDS is that the target itself has to be purified and covalently labeled with a fluorescent dye. Such covalent labeling is not suitable for crude extracts such as native nanodiscs directly obtained from cellular membranes. In this study, we introduce fluorescent universal lipid labeling for MDS (FULL-MDS) as a sparse, noncovalent labeling method for determining particle size. We first demonstrate that the inexpensive and well-characterized fluorophore, Nile blue, spontaneously partitions into lipid nanoparticles without disrupting their structure. We then highlight the key advantage of FULL-MDS by showing that it yields robust size information on lipid nanoparticles in crude cell extracts that are not amenable to other sizing methods. Furthermore, even for synthetic nanodiscs, FULL-MDS is faster, cheaper, and simpler than existing labeling schemes.
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Affiliation(s)
- Jasmin Baron
- Biophysics,
Institute of Molecular Biosciences (IMB), NAWI Graz, University of Graz, Humboldtstr. 50/III, Graz 8010, Austria,Field
of Excellence BioHealth, University of Graz, Graz 8010, Austria,BioTechMed-Graz, Graz 8010, Austria
| | - Lena Bauernhofer
- Biophysics,
Institute of Molecular Biosciences (IMB), NAWI Graz, University of Graz, Humboldtstr. 50/III, Graz 8010, Austria,Field
of Excellence BioHealth, University of Graz, Graz 8010, Austria,BioTechMed-Graz, Graz 8010, Austria
| | - Sean R. A. Devenish
- The
Paddocks Business Centre, Fluidic Analytics
Ltd., Unit A, Cherry Hinton Road, Cambridge CB1 8DH, United Kingdom
| | - Sebastian Fiedler
- The
Paddocks Business Centre, Fluidic Analytics
Ltd., Unit A, Cherry Hinton Road, Cambridge CB1 8DH, United Kingdom
| | - Alison Ilsley
- The
Paddocks Business Centre, Fluidic Analytics
Ltd., Unit A, Cherry Hinton Road, Cambridge CB1 8DH, United Kingdom
| | - Sabrina Riedl
- Biophysics,
Institute of Molecular Biosciences (IMB), NAWI Graz, University of Graz, Humboldtstr. 50/III, Graz 8010, Austria,Field
of Excellence BioHealth, University of Graz, Graz 8010, Austria,BioTechMed-Graz, Graz 8010, Austria
| | - Dagmar Zweytick
- Biophysics,
Institute of Molecular Biosciences (IMB), NAWI Graz, University of Graz, Humboldtstr. 50/III, Graz 8010, Austria,Field
of Excellence BioHealth, University of Graz, Graz 8010, Austria,BioTechMed-Graz, Graz 8010, Austria
| | - David Glueck
- Biophysics,
Institute of Molecular Biosciences (IMB), NAWI Graz, University of Graz, Humboldtstr. 50/III, Graz 8010, Austria,Field
of Excellence BioHealth, University of Graz, Graz 8010, Austria,BioTechMed-Graz, Graz 8010, Austria
| | - Ariane Pessentheiner
- Biophysics,
Institute of Molecular Biosciences (IMB), NAWI Graz, University of Graz, Humboldtstr. 50/III, Graz 8010, Austria,Field
of Excellence BioHealth, University of Graz, Graz 8010, Austria,BioTechMed-Graz, Graz 8010, Austria
| | - Grégory Durand
- Equipe
Synthèse et Systèmes Colloïdaux Bio-organiques,
Unité Propre de Recherche et d’Innovation, Avignon Université, 301 rue Baruch de Spinoza, Avignon 84916 CEDEX 9, France,CHEM2STAB, 301 rue Baruch de Spinoza, Avignon 84916 CEDEX 9, France
| | - Sandro Keller
- Biophysics,
Institute of Molecular Biosciences (IMB), NAWI Graz, University of Graz, Humboldtstr. 50/III, Graz 8010, Austria,Field
of Excellence BioHealth, University of Graz, Graz 8010, Austria,BioTechMed-Graz, Graz 8010, Austria,
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2
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Mahler F, Meister A, Vargas C, Durand G, Keller S. Self-Assembly of Protein-Containing Lipid-Bilayer Nanodiscs from Small-Molecule Amphiphiles. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2103603. [PMID: 34674382 DOI: 10.1002/smll.202103603] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2021] [Revised: 08/24/2021] [Indexed: 06/13/2023]
Abstract
When membrane proteins are removed from their natural environment, the quality of the membrane-solubilizing agent used is critical for preserving their native structures and functions. Nanodiscs that retain a lipid-bilayer core around membrane proteins have attracted great attention because they offer a much more native-like environment than detergent micelles. Here, two small-molecule amphiphiles with diglucose headgroups and either a hydrocarbon or a fluorocarbon hydrophobic chain are shown to directly assemble lipids and membrane proteins to form native nanodiscs rather than mixed micelles. Self-assembly of nanodiscs of increasing complexity from both defined, artificial vesicles as well as complex, cellular membranes is demonstrated. A detailed investigation of bilayer integrity and membrane-protein activity in these nanodiscs reveals gentle effects on the encapsulated bilayer core. The fluorinated amphiphile appears particularly promising because its lipophobicity results in gentle, non-perturbing interactions with the nanoscale lipid bilayer. A sequential model of nanodisc self-assembly is proposed that proceeds through perforation of the original membrane followed by saturation and complete solubilization of the bilayer. On this basis, pseudophase diagrams are established for mixtures of lipids and nanodisc-forming diglucoside amphiphiles, and the latter are used for the extraction of a broad range of membrane proteins from cellular membranes.
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Affiliation(s)
- Florian Mahler
- Molecular Biophysics, Technische Universität Kaiserslautern (TUK), 67663, Kaiserslautern, Germany
| | - Annette Meister
- HALOmem and Institute of Biochemistry, Martin-Luther-Universität Halle-Wittenberg, 06108, Halle (Saale), Germany
| | - Carolyn Vargas
- Molecular Biophysics, Technische Universität Kaiserslautern (TUK), 67663, Kaiserslautern, Germany
- Biophysics, Institute of Molecular Biosciences (IMB), NAWI Graz, University of Graz, Graz, 8010, Austria
- Field of Excellence BioHealth, University of Graz, Graz, Austria
- BioTechMed-Graz, Graz, Austria
| | - Grégory Durand
- Equipe Chimie Bioorganique et Systèmes Amphiphiles, Institut des Biomolécules Max Mousseron, Avignon University, Avignon, 84916, France
- CHEM2STAB, Avignon, 84916, France
| | - Sandro Keller
- Molecular Biophysics, Technische Universität Kaiserslautern (TUK), 67663, Kaiserslautern, Germany
- Biophysics, Institute of Molecular Biosciences (IMB), NAWI Graz, University of Graz, Graz, 8010, Austria
- Field of Excellence BioHealth, University of Graz, Graz, Austria
- BioTechMed-Graz, Graz, Austria
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3
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Grousson E, Mahler F, Keller S, Contino-Pépin C, Durand G. Hybrid Fluorocarbon-Hydrocarbon Surfactants: Synthesis and Colloidal Characterization. J Org Chem 2021; 86:14672-14683. [PMID: 34609857 DOI: 10.1021/acs.joc.1c01493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Four double-tailed hybrid fluorocarbon-hydrocarbon (F-H) surfactants with a poly(ethylene glycol) (PEG) polar headgroup were synthesized. The hydrophobic scaffold consists of an amino acid core, onto which were grafted both fluorocarbon and hydrocarbon chains of different lengths. The PEG polar head was connected to the hydrophobic scaffold through a copper(I)-mediated click reaction. The four derivatives exhibit aqueous solubility >100 g/L and self-assemble into micellar aggregates with micromolar critical micellar concentration (CMC) values, as demonstrated by isothermal titration calorimetry (ITC), surface tension (ST) measurements, and steady-state fluorescence spectroscopy. The CMC value decreased by a factor of ∼6 for each additional pair of CH2 groups, whereas a decrease by a factor of ∼2.5 was observed when the size of the PEG polar head was reduced from 2000 to 750 g/mol. Dynamic light scattering (DLS) showed unimodal micelle populations with hydrodynamic diameters of 10-15 nm, in agreement with results obtained from size-exclusion chromatography (SEC). The aggregation number increased with the hydrocarbon chain length but decreased with increasing PEG chain lengths. The combination in one molecular design of both low CMC and high water solubility makes these new surfactants promising systems for novel drug-delivery systems.
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Affiliation(s)
- Emilie Grousson
- Institut des Biomolécules Max Mousseron (IBMM)─UMR5247, 34093 Montpellier, France.,Equipe Chimie Bioorganique et Systèmes Amphiphiles (CBSA), Avignon Université, 84000 Avignon, France
| | - Florian Mahler
- Molecular Biophysics, Technische Universität Kaiserslautern, (TUK), Erwin-Schrödinger-Str. 13, 67663 Kaiserslautern, Germany
| | - Sandro Keller
- Molecular Biophysics, Technische Universität Kaiserslautern, (TUK), Erwin-Schrödinger-Str. 13, 67663 Kaiserslautern, Germany.,Biophysics, Institute of Molecular Biosciences (IMB), NAWI Graz, University of Graz, Humboldtstr. 50/III, 8010 Graz, Austria.,Field of Excellence BioHealth, University of Graz, 8010 Graz, Austria.,BioTechMed-Graz, 8010 Graz, Austria
| | - Christiane Contino-Pépin
- Institut des Biomolécules Max Mousseron (IBMM)─UMR5247, 34093 Montpellier, France.,Equipe Chimie Bioorganique et Systèmes Amphiphiles (CBSA), Avignon Université, 84000 Avignon, France
| | - Grégory Durand
- Institut des Biomolécules Max Mousseron (IBMM)─UMR5247, 34093 Montpellier, France.,Equipe Chimie Bioorganique et Systèmes Amphiphiles (CBSA), Avignon Université, 84000 Avignon, France
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4
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Li D, Chu W, Sheng X, Li W. Optimization of Membrane Protein TmrA Purification Procedure Guided by Analytical Ultracentrifugation. MEMBRANES 2021; 11:membranes11100780. [PMID: 34677546 PMCID: PMC8537081 DOI: 10.3390/membranes11100780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Revised: 10/06/2021] [Accepted: 10/06/2021] [Indexed: 12/02/2022]
Abstract
Membrane proteins are involved in various cellular processes. However, purification of membrane proteins has long been a challenging task, as membrane protein stability in detergent is the bottleneck for purification and subsequent analyses. Therefore, the optimization of detergent conditions is critical for the preparation of membrane proteins. Here, we utilize analytical ultracentrifugation (AUC) to examine the effects of different detergents (OG, Triton X-100, DDM), detergent concentrations, and detergent supplementation on the behavior of membrane protein TmrA. Our results suggest that DDM is more suitable for the purification of TmrA compared with OG and TritonX-100; a high concentration of DDM yields a more homogeneous protein aggregation state; supplementing TmrA purified with a low DDM concentration with DDM maintains the protein homogeneity and aggregation state, and may serve as a practical and cost-effective strategy for membrane protein purification.
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Affiliation(s)
- Dongdong Li
- Institute of Biomedicine, Tsinghua University, Beijing 100084, China; (D.L.); (W.C.)
- National Protein Science Facility, Beijing 100084, China
- School of Life Sciences, Tsinghua University, Beijing 100084, China
- Beijing Advanced Innovation Center for Structural Biology, Tsinghua University, Beijing 100084, China
| | - Wendan Chu
- Institute of Biomedicine, Tsinghua University, Beijing 100084, China; (D.L.); (W.C.)
- National Protein Science Facility, Beijing 100084, China
- School of Life Sciences, Tsinghua University, Beijing 100084, China
- Beijing Advanced Innovation Center for Structural Biology, Tsinghua University, Beijing 100084, China
| | - Xinlei Sheng
- Lewis Thomas Laboratory, Department of Molecular Biology, Princeton University, Washington Road, Princeton, NJ 08544, USA
- Correspondence: (X.S.); (W.L.); Tel.: +86-1062782031 (W.L.)
| | - Wenqi Li
- Institute of Biomedicine, Tsinghua University, Beijing 100084, China; (D.L.); (W.C.)
- National Protein Science Facility, Beijing 100084, China
- School of Life Sciences, Tsinghua University, Beijing 100084, China
- Beijing Advanced Innovation Center for Structural Biology, Tsinghua University, Beijing 100084, China
- Correspondence: (X.S.); (W.L.); Tel.: +86-1062782031 (W.L.)
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5
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Al-Soufi W, Novo M. A Surfactant Concentration Model for the Systematic Determination of the Critical Micellar Concentration and the Transition Width. Molecules 2021; 26:molecules26175339. [PMID: 34500770 PMCID: PMC8433748 DOI: 10.3390/molecules26175339] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 08/08/2021] [Accepted: 08/11/2021] [Indexed: 11/22/2022] Open
Abstract
The critical micellar concentration (cmc) is a fundamental property of surfactant solutions. Many proposed methods for the definition and determination of the cmc from property-concentration plots yield values, which depend on the studied property, on the specific technique used for its analysis and in many cases on the subjective choice of the chosen type of plot and concentration interval. In this focus review, we revise the application of a surfactant concentration model we proposed earlier that defines the cmc directly based on the surfactant concentration. Known equations for the concentration-dependence of different surfactant properties can then be combined with this concentration model and fitted to experimental data. This modular concept makes it possible to determine the cmc and the transition width in a systematic and unambiguous way. We revise its use in the literature in different contexts: the determination of the cmc of surfactants and their mixtures from different properties (electrical conductivity, NMR chemical shift, self-diffusion, surface tension, UV-Vis absorption, fluorescence intensity and fluorescence correlation). We also revise the dependence of the width of the transition region on composition, detailed studies of the properties of fluorescent probes and the aggregation of non-surfactant systems, namely amyloid peptides.
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6
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Missel JW, Salustros N, Becares ER, Steffen JH, Laursen AG, Garcia AS, Garcia-Alai MM, Kolar Č, Gourdon P, Gotfryd K. Cyclohexyl-α maltoside as a highly efficient tool for membrane protein studies. Curr Res Struct Biol 2021; 3:85-94. [PMID: 34235488 PMCID: PMC8244287 DOI: 10.1016/j.crstbi.2021.03.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Revised: 02/09/2021] [Accepted: 03/05/2021] [Indexed: 01/06/2023] Open
Abstract
Membrane proteins (MPs) constitute a large fraction of the proteome, but exhibit physicochemical characteristics that impose challenges for successful sample production crucial for subsequent biophysical studies. In particular, MPs have to be extracted from the membranes in a stable form. Reconstitution into detergent micelles represents the most common procedure in recovering MPs for subsequent analysis. n-dodecyl-β-D-maltoside (DDM) remains one of the most popular conventional detergents used in production of MPs. Here we characterize the novel DDM analogue 4-trans-(4-trans-propylcyclohexyl)-cyclohexyl α-maltoside (t-PCCαM), possessing a substantially lower critical micelle concentration (CMC) than the parental compound that represents an attractive feature when handling MPs. Using three different types of MPs of human and prokaryotic origin, i.e., a channel, a primary and a secondary active transporter, expressed in yeast and bacterial host systems, respectively, we investigate the performance of t-PCCαM in solubilization and affinity purification together with its capacity to preserve native fold and activity. Strikingly, t-PCCαM displays favorable behavior in extracting and stabilizing the three selected targets. Importantly, t-PCCαM promoted extraction of properly folded protein, enhanced thermostability and provided negatively-stained electron microscopy samples of promising quality. All-in-all, t-PCCαM emerges as competitive surfactant applicable to a broad portfolio of challenging MPs for downstream structure-function analysis.
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Affiliation(s)
- Julie Winkel Missel
- Department of Biomedical Sciences, Copenhagen University, Maersk Tower 7-9, Nørre Allé 14, DK-2200, Copenhagen N, Denmark
| | - Nina Salustros
- Department of Biomedical Sciences, Copenhagen University, Maersk Tower 7-9, Nørre Allé 14, DK-2200, Copenhagen N, Denmark
| | - Eva Ramos Becares
- Department of Biomedical Sciences, Copenhagen University, Maersk Tower 7-9, Nørre Allé 14, DK-2200, Copenhagen N, Denmark
| | - Jonas Hyld Steffen
- Department of Biomedical Sciences, Copenhagen University, Maersk Tower 7-9, Nørre Allé 14, DK-2200, Copenhagen N, Denmark
| | - Amalie Gerdt Laursen
- Department of Biomedical Sciences, Copenhagen University, Maersk Tower 7-9, Nørre Allé 14, DK-2200, Copenhagen N, Denmark
| | - Angelica Struve Garcia
- European Molecular Biology Laboratory Hamburg, Notkestrasse 85, D-22607, Hamburg, Germany
| | - Maria M Garcia-Alai
- European Molecular Biology Laboratory Hamburg, Notkestrasse 85, D-22607, Hamburg, Germany.,Centre for Structural Systems Biology, Notkestrasse 85, D-22607, Hamburg, Germany
| | - Čeněk Kolar
- Glycon Biochemicals GmbH, Im Biotechnologie Park TGZ 1, D-14943, Luckenwalde, Germany
| | - Pontus Gourdon
- Department of Biomedical Sciences, Copenhagen University, Maersk Tower 7-9, Nørre Allé 14, DK-2200, Copenhagen N, Denmark.,Department of Experimental Medical Science, Lund University, Sölvegatan 19, SE-221 84, Lund, Sweden
| | - Kamil Gotfryd
- Department of Biomedical Sciences, Copenhagen University, Maersk Tower 7-9, Nørre Allé 14, DK-2200, Copenhagen N, Denmark
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7
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Zhou R, Jin Y, Shen Y, Zhao P, Zhou Y. Synthesis and application of non-bioaccumulable fluorinated surfactants: a review. JOURNAL OF LEATHER SCIENCE AND ENGINEERING 2021. [DOI: 10.1186/s42825-020-00048-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Abstract
Due to negative effects of conventional fluorinated surfactants with long perfluorocarbon chain (CxF2x+ 1, x≥7) like perfluorooctanoic acid (PFOA) and perfluorooctane sulfonate (PFOS), these conventional long perfluorocarbon chain surfactants have been restricted in many industrial applications. Nowadays, their potential non-bioaccumulable alternatives have been developed to meet the requirements of environmental sustainable development. In this paper, the recent advances of potential non-bioaccumulable fluorinated surfactants with different fluorocarbon chain structures, including the short perfluorocarbon chain, the branched fluorocarbon chain, and the fluorocarbon chain with weak points, are reviewed from the aspects of synthesis processes, properties, and structure-activity relationships. And their applications in emulsion polymerization of fluorinated olefins, handling membrane proteins, and leather manufacture also are summarized. Furthermore, the challenges embedded in the current non-bioaccumulable fluorinated surfactants are also highlighted and discussed with the hope to provide a valuable reference for the prosperous development of fluorinated surfactants.
Graphical abstract
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8
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Wehbie M, Onyia KK, Mahler F, Le Roy A, Deletraz A, Bouchemal I, Vargas C, Babalola JO, Breyton C, Ebel C, Keller S, Durand G. Maltose-Based Fluorinated Surfactants for Membrane-Protein Extraction and Stabilization. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:2111-2122. [PMID: 33539092 DOI: 10.1021/acs.langmuir.0c03214] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Two new surfactants, F5OM and F5DM, were designed as partially fluorinated analogues of n-dodecyl-β-D-maltoside (DDM). The micellization properties and the morphologies of the aggregates formed by the two surfactants in water and phosphate buffer were evaluated by NMR spectroscopy, surface tension measurement, isothermal titration calorimetry, dynamic light scattering, small-angle X-ray scattering, and analytical ultracentrifugation. As expected, the critical micellar concentration (cmc) was found to decrease with chain length of the fluorinated tail from 2.1-2.5 mM for F5OM to 0.3-0.5 mM for F5DM, and micellization was mainly entropy-driven at 25 °C. Close to their respective cmc, the micelle sizes were similar for both surfactants, that is, 7 and 13 nm for F5OM and F5DM, respectively, and both increased with concentration forming 4 nm diameter rods with maximum dimensions of 50 and 70 nm, respectively, at a surfactant concentration of ∼30 mM. The surfactants were found to readily solubilize lipid vesicles and extract membrane proteins directly from Escherichia coli membranes. They were found more efficient than the commercial fluorinated detergent F6H2OM over a broad range of concentrations (1-10 mM) and even better than DDM at low concentrations (1-5 mM). When transferred into the two new surfactants, the thermal stability of the proteins bacteriorhodopsin (bR) and FhuA was higher than in the presence of their solubilization detergents and similar to that in DDM; furthermore, bR was stable over several months. The membrane enzymes SpNOX and BmrA were not as active as in DDM micelles but similarly active as in F6OM. Together, these findings indicate both extracting and stabilizing properties of the new maltose-based fluorinated surfactants, making them promising tools in MP applications.
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Affiliation(s)
- Moheddine Wehbie
- Institut des Biomolécules Max Mousseron (UMR 5247 UM-CNRS-ENSCM) & Avignon University, Equipe Chimie Bioorganique et Systèmes amphiphiles, 301 rue Baruch de Spinoza, 84916 cedex 9 Avignon, France
| | - Kenechi Kanayo Onyia
- Molecular Biophysics, Technische Universität Kaiserslautern (TUK), Erwin-Schrödinger-Str. 13, 67663 Kaiserslautern, Germany
- Department of Chemistry, University of Ibadan, 200284 Ibadan, Nigeria
| | - Florian Mahler
- Molecular Biophysics, Technische Universität Kaiserslautern (TUK), Erwin-Schrödinger-Str. 13, 67663 Kaiserslautern, Germany
| | - Aline Le Roy
- Université Grenoble Alpes, CNRS, CEA, CNRS, IBS, F-38000 Grenoble, France
| | - Anais Deletraz
- Institut des Biomolécules Max Mousseron (UMR 5247 UM-CNRS-ENSCM) & Avignon University, Equipe Chimie Bioorganique et Systèmes amphiphiles, 301 rue Baruch de Spinoza, 84916 cedex 9 Avignon, France
| | - Ilham Bouchemal
- Université Grenoble Alpes, CNRS, CEA, CNRS, IBS, F-38000 Grenoble, France
| | - Carolyn Vargas
- Molecular Biophysics, Technische Universität Kaiserslautern (TUK), Erwin-Schrödinger-Str. 13, 67663 Kaiserslautern, Germany
- Biophysics, Institute of Molecular Biosciences (IMB), NAWI Graz, University of Graz, Humboldtstr. 50/III 8010 Graz, Austria
- Field of Excellence BioHealth, University of Graz, 8010 Graz, Austria
- BioTechMed-Graz, 8010 Graz, Austria
| | | | - Cécile Breyton
- Université Grenoble Alpes, CNRS, CEA, CNRS, IBS, F-38000 Grenoble, France
| | - Christine Ebel
- Université Grenoble Alpes, CNRS, CEA, CNRS, IBS, F-38000 Grenoble, France
| | - Sandro Keller
- Molecular Biophysics, Technische Universität Kaiserslautern (TUK), Erwin-Schrödinger-Str. 13, 67663 Kaiserslautern, Germany
- Biophysics, Institute of Molecular Biosciences (IMB), NAWI Graz, University of Graz, Humboldtstr. 50/III 8010 Graz, Austria
- Field of Excellence BioHealth, University of Graz, 8010 Graz, Austria
- BioTechMed-Graz, 8010 Graz, Austria
| | - Grégory Durand
- Institut des Biomolécules Max Mousseron (UMR 5247 UM-CNRS-ENSCM) & Avignon University, Equipe Chimie Bioorganique et Systèmes amphiphiles, 301 rue Baruch de Spinoza, 84916 cedex 9 Avignon, France
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9
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Bonnet C, Guillet P, Mahler F, Igonet S, Keller S, Jawhari A, Durand G. Detergent‐Like Polymerizable Monomers: Synthesis, Physicochemical, and Biochemical Characterization. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Christophe Bonnet
- Chimie Bioorganique et Systèmes amphiphiles Institut des Biomolécules Max Mousseron (UMR 5247 UM‐CNRS‐ENSCM) & Avignon University 301 rue Baruch de Spinoza – 84916 AVIGNON cedex 9 France
- CHEM2STAB 301 rue Baruch de Spinoza – 84916 AVIGNON cedex 9 France
| | - Pierre Guillet
- Chimie Bioorganique et Systèmes amphiphiles Institut des Biomolécules Max Mousseron (UMR 5247 UM‐CNRS‐ENSCM) & Avignon University 301 rue Baruch de Spinoza – 84916 AVIGNON cedex 9 France
- CHEM2STAB 301 rue Baruch de Spinoza – 84916 AVIGNON cedex 9 France
| | - Florian Mahler
- Molecular Biophysics Technische Universität Kaiserslautern (TUK) Erwin‐Schrödinger‐Str. 13 67663 Kaiserslautern Germany
| | - Sébastien Igonet
- CHEM2STAB 301 rue Baruch de Spinoza – 84916 AVIGNON cedex 9 France
- CALIXAR 60A Avenue Rockefeller – 69008 Lyon France
| | - Sandro Keller
- Molecular Biophysics Technische Universität Kaiserslautern (TUK) Erwin‐Schrödinger‐Str. 13 67663 Kaiserslautern Germany
| | - Anass Jawhari
- CHEM2STAB 301 rue Baruch de Spinoza – 84916 AVIGNON cedex 9 France
- CALIXAR 60A Avenue Rockefeller – 69008 Lyon France
| | - Grégory Durand
- Chimie Bioorganique et Systèmes amphiphiles Institut des Biomolécules Max Mousseron (UMR 5247 UM‐CNRS‐ENSCM) & Avignon University 301 rue Baruch de Spinoza – 84916 AVIGNON cedex 9 France
- CHEM2STAB 301 rue Baruch de Spinoza – 84916 AVIGNON cedex 9 France
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10
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Lactobionamide-based fluorinated detergent for functional and structural stabilization of membrane proteins. Methods 2020; 180:19-26. [DOI: 10.1016/j.ymeth.2020.02.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Revised: 02/07/2020] [Accepted: 02/08/2020] [Indexed: 12/28/2022] Open
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11
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Park SH, Lee JH. Dynamic G Protein-Coupled Receptor Signaling Probed by Solution NMR Spectroscopy. Biochemistry 2020; 59:1065-1080. [PMID: 32092261 DOI: 10.1021/acs.biochem.0c00032] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Nuclear magnetic resonance (NMR) spectroscopy is a powerful tool for investigating various dynamic features of G protein-coupled receptor (GPCR) signaling. In this Perspective, we focus on NMR techniques to characterize ligand-dependent conformational dynamics of GPCRs as well as the interaction of GPCRs with their environment and ligands. We also describe circumstances under which each technique should be applied, their advantages and disadvantages, and how they can be combined with other strategies to deepen the understanding of GPCR signaling at the molecular level.
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Affiliation(s)
- Sho Hee Park
- Department of Chemistry, Seoul National University, Seoul 08826, Korea
| | - Jung Ho Lee
- Department of Chemistry, Seoul National University, Seoul 08826, Korea
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Hardy D, Bill RM, Rothnie AJ, Jawhari A. Stabilization of Human Multidrug Resistance Protein 4 (MRP4/ABCC4) Using Novel Solubilization Agents. SLAS DISCOVERY 2019; 24:1009-1017. [PMID: 31381456 PMCID: PMC6873219 DOI: 10.1177/2472555219867074] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Membrane proteins (MPs) are important drug discovery targets for a wide range of diseases. However, elucidating the structure and function of native MP is notoriously challenging as their original structure has to be maintained once removed from the lipid bilayer. Conventionally, detergents have been used to solubilize MP with varying degrees of success concerning MP stability. To try to address this, new, more stabilizing agents have been developed, such as calixarene-based detergents and styrene-maleic acid (SMA) copolymer. Calixarene-based detergents exhibit enhanced solubilizing and stabilizing properties compared with conventional detergents, whereas SMA is able to extract MPs with their surrounding lipids, forming a nanodisc structure. Here we report a comparative study using classical detergents, calixarene-based detergents, and SMA to assess the solubilization and stabilization of the human ABC transporter MRP4 (multidrug resistance protein 4/ABCC4). We show that both SMA and calixarene-based detergents have a higher solubility efficiency (at least 80%) than conventional detergents, and show striking overstabilization features of MRP4 (up to 70 °C) with at least 30 °C stability improvement in comparison with the best conventional detergents. These solubilizing agents were successfully used to purify aggregate-free, homogenous and stable MRP4, with sevenfold higher yield for C4C7 calixarene detergent in comparison with SMA. This work paves the way to MRP4 structural and functional investigations and illustrates once more the high value of using calixarene-based detergent or SMA as versatile and efficient tools to study MP, and eventually enable drug discovery of challenging and highly druggable targets.
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Affiliation(s)
- David Hardy
- CALIXAR, Lyon, France.,Life & Health Sciences, Aston University, Aston Triangle, Birmingham, UK
| | - Roslyn M Bill
- Life & Health Sciences, Aston University, Aston Triangle, Birmingham, UK
| | - Alice J Rothnie
- Life & Health Sciences, Aston University, Aston Triangle, Birmingham, UK
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