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Patrick J, Alija MG, Liebau J, Pettersson P, Metola A, Mäler L. Dilute Bicelles for Glycosyltransferase Studies, Novel Bicelles with Phosphatidylinositol. J Phys Chem B 2022; 126:5655-5666. [PMID: 35880265 PMCID: PMC9358657 DOI: 10.1021/acs.jpcb.2c02327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Solution-state NMR can be used to study protein-lipid interactions, in particular, the effect that proteins have on lipids. One drawback is that only small assemblies can be studied, and therefore, fast-tumbling bicelles are commonly used. Bicelles contain a lipid bilayer that is solubilized by detergents. A complication is that they are only stable at high concentrations, exceeding the CMC of the detergent. This issue has previously been addressed by introducing a detergent (Cyclosfos-6) with a substantially lower CMC. Here, we developed a set of bicelles using this detergent for studies of membrane-associated mycobacterial proteins, for example, PimA, a key enzyme for bacterial growth. To mimic the lipid composition of mycobacterial membranes, PI, PG, and PC lipids were used. Diffusion NMR was used to characterize the bicelles, and spin relaxation was used to measure the dynamic properties of the lipids. The results suggest that bicelles are formed, although they are smaller than "conventional" bicelles. Moreover, we studied the effect of MTSL-labeled PimA on bicelles containing PI and PC. The paramagnetic label was shown to have a shallow location in the bicelle, affecting the glycerol backbone of the lipids. We foresee that these bicelles will be useful for detailed studies of protein-lipid interactions.
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Affiliation(s)
- Joan Patrick
- Department of Biochemistry and Biophysics, Stockholm University, SE-106 91 Stockholm, Sweden
| | - Mikel García Alija
- Department of Biochemistry and Biophysics, Stockholm University, SE-106 91 Stockholm, Sweden
| | - Jobst Liebau
- Department of Biochemistry and Biophysics, Stockholm University, SE-106 91 Stockholm, Sweden
| | - Pontus Pettersson
- Department of Biochemistry and Biophysics, Stockholm University, SE-106 91 Stockholm, Sweden
| | - Ane Metola
- Department of Biochemistry and Biophysics, Stockholm University, SE-106 91 Stockholm, Sweden
| | - Lena Mäler
- Department of Biochemistry and Biophysics, Stockholm University, SE-106 91 Stockholm, Sweden
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2
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Li M, Heller WT, Liu CH, Gao CY, Cai Y, Hou Y, Nieh MP. Effects of fluidity and charge density on the morphology of a bicellar mixture - A SANS study. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2020; 1862:183315. [PMID: 32304755 DOI: 10.1016/j.bbamem.2020.183315] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Revised: 04/11/2020] [Accepted: 04/13/2020] [Indexed: 01/28/2023]
Abstract
The spontaneously formed structures of physiologically relevant lipid model membranes made of 1-palmitoyl-2-oleoyl-sn-glycero-3-phosphocholine, 1-palmitoyl-2-oleoyl-sn-glycero-3-phospho-(1'-rac-glycerol) and 1,2-hexanoyl-sn-glycero-3-phosphocholine have been evaluated in depth using small angle neutron scattering. Although a common molar ratio of long- to short- chain phospholipids (~4) as reported in many bicellar mixtures was used, discoidal bicelles were not found as the major phase throughout the range of lipid concentration and temperature studied, indicating that the required condition for the formation of bicelle is the immiscibility between the long- and short- chain lipids, which were in the gel and Lα phases, respectively, in previous reports. In this study, all lipids are in the Lα phase. The characterization outcome suggests that the spontaneous structures tie strongly with the physical parameters of the system such as melting transition temperature of the long-chain lipid, total lipid concentration and charge density of the system. Multilamellar vesicles, unilamellar vesicles, ribbons and perforated lamellae can be obtained based on the analysis of the small angle neutron scattering results, leading to the construction of structural diagrams. This report provides the important map to choose suitable lipid systems for the structural study of membrane-associated proteins, design of theranostic nanocarriers or other related research fields.
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Affiliation(s)
- Ming Li
- Polymer Program, Institute of Materials Science, University of Connecticut, Storrs, 06269, USA
| | - William T Heller
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
| | - Chung-Hao Liu
- Polymer Program, Institute of Materials Science, University of Connecticut, Storrs, 06269, USA
| | - Carrie Y Gao
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
| | - Yutian Cai
- Department of Polymer Material Science and Engineering, College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha, Hunan 410000, China
| | - Yiming Hou
- Department of Polymer Material Science and Engineering, College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha, Hunan 410000, China
| | - Mu-Ping Nieh
- Polymer Program, Institute of Materials Science, University of Connecticut, Storrs, 06269, USA; Department of Chemical & Biomolecular Engineering, University of Connecticut, Storrs 06269, USA; Department of Biomedical Engineering, University of Connecticut, Storrs 06269, USA.
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3
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Ribić R, Manček-Keber M, Chain F, Sinnaeve D, Martins JC, Jerala R, Tomić S, Fehér K. Targeted Delivery of Adamantylated Peptidoglycan Immunomodulators in Lipid Nanocarriers: NMR Shows That Cargo Fragments Are Available on the Surface. J Phys Chem B 2020; 124:4132-4145. [PMID: 32283934 DOI: 10.1021/acs.jpcb.0c00029] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
We present an in-depth investigation of the membrane interactions of peptidoglycan (PGN)-based immune adjuvants designed for lipid-based delivery systems using NMR spectroscopy. The derivatives contain a cargo peptidoglycan (PGN) dipeptide fragment and an adamantyl group, which serves as an anchor to the lipid bilayer. Furthermore, derivatives with a mannose group that can actively target cell surface receptors on immune cells are also studied. We showed that the targeting mannose group and the cargo PGN fragment are both available on the lipid bilayer surface, thereby enabling interactions with cognate receptors. We found that the nonmannosylated compounds are incorporated stronger into the lipid assemblies than the mannosylated ones, but the latter compounds penetrate deeper in the bilayer. This might be explained by stronger electrostatic interactions available for zwitterionic nonmannosylated derivatives as opposed to the compounds in which the charged N-terminus is capped by mannose groups. The higher incorporation efficiency of the nonmannosylated compounds correlated with a larger relative enhancement in immune stimulation activities upon lipid incorporation compared to that of the derivatives with the mannose group. The chirality of the adamantyl group also influenced the incorporation efficiency, which in turn correlated with membrane-associated conformations that affect possible intermolecular interactions with lipid molecules. These findings will help in improving the development of PGN-based immune adjuvants suitable for delivery in lipid nanoparticles.
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Affiliation(s)
- Rosana Ribić
- University Center Varaždin, University North, Jurja Križanića 31b, HR-42 000 Varaždin, Croatia.,Heidelberg Institute for Theoretical Studies, Schloss-Wolfsbrunnenweg 35, 69118 Heidelberg, Germany
| | - Mateja Manček-Keber
- Department of Synthetic Biology and Immunology, National Institute of Chemistry, Hajdrihova 19, P.O. Box 660, SI-1001 Ljubljana, Slovenia.,Heidelberg Institute for Theoretical Studies, Schloss-Wolfsbrunnenweg 35, 69118 Heidelberg, Germany
| | - Fernando Chain
- Department of Organic and Macromolecular Chemistry, Ghent University, Campus Sterre S4, Krijgslaan 281, 9000 Ghent, Belgium
| | - Davy Sinnaeve
- Department of Organic and Macromolecular Chemistry, Ghent University, Campus Sterre S4, Krijgslaan 281, 9000 Ghent, Belgium.,Univ. Lille, Inserm, Institut Pasteur de Lille, CHU Lille, U1167 - Labex DISTALZ - RID-AGE - Risk Factors and Molecular Determinants of Aging-Related Diseases, F-59000 Lille, France.,CNRS, ERL9002 - Integrative Structural Biology, F-59000 Lille, France
| | - José C Martins
- Department of Organic and Macromolecular Chemistry, Ghent University, Campus Sterre S4, Krijgslaan 281, 9000 Ghent, Belgium
| | - Roman Jerala
- Department of Synthetic Biology and Immunology, National Institute of Chemistry, Hajdrihova 19, P.O. Box 660, SI-1001 Ljubljana, Slovenia
| | - Srđanka Tomić
- Department of Chemistry, Faculty of Science, University of Zagreb, Horvatovac 102A, HR-10 000 Zagreb, Croatia
| | - Krisztina Fehér
- Department of Organic and Macromolecular Chemistry, Ghent University, Campus Sterre S4, Krijgslaan 281, 9000 Ghent, Belgium.,Heidelberg Institute for Theoretical Studies, Schloss-Wolfsbrunnenweg 35, 69118 Heidelberg, Germany.,Molecular Recognition and Interaction Research Group, Hungarian Academy of Sciences, Egyetem tér 1, H-4032 Debrecen, Hungary
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4
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Szczelina R, Baczynski K, Markiewicz M, Pasenkiewicz-Gierula M. Network of lipid interconnections at the interfaces of galactolipid and phospholipid bilayers. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2019.112002] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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5
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Bragin PE, Kuznetsov AS, Bocharova OV, Volynsky PE, Arseniev AS, Efremov RG, Mineev KS. Probing the effect of membrane contents on transmembrane protein-protein interaction using solution NMR and computer simulations. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2018; 1860:2486-2498. [PMID: 30279150 DOI: 10.1016/j.bbamem.2018.09.013] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Revised: 09/03/2018] [Accepted: 09/17/2018] [Indexed: 12/18/2022]
Abstract
The interaction between the secondary structure elements is the key process, determining the spatial structure and activity of a membrane protein. Transmembrane (TM) helix-helix interaction is known to be especially important for the function of so-called type I or bitopic membrane proteins. In the present work, we present the approach to study the helix-helix interaction in the TM domains of membrane proteins in various lipid environment using solution NMR spectroscopy and phospholipid bicelles. The technique is based on the ability of bicelles to form particles with the size, depending on the lipid/detergent ratio. To implement the approach, we report the experimental parameters of "ideal bicelle" models for four kinds of zwitterionic phospholipids, which can be also used in other structural studies. We show that size of bicelles and type of the rim-forming detergent do not affect substantially the spatial structure and stability of the model TM dimer. On the other hand, the effect of bilayer thickness on the free energy of the dimer is dramatic, while the structure of the protein is unchanged in various lipids with fatty chains having a length from 12 to 18 carbon atoms. The obtained data is analyzed using the computer simulations to find the physical origin of the observed effects.
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Affiliation(s)
- P E Bragin
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences RAS, str. Miklukho-Maklaya 16/10, Moscow 117997, Russian Federation; Lomonosov Moscow State University, Leninskiye Gory, 1, Moscow 119991, Russian Federation
| | - A S Kuznetsov
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences RAS, str. Miklukho-Maklaya 16/10, Moscow 117997, Russian Federation; Moscow Institute of Physics and Technology, Institutsky per., 9, 141700 Dolgoprudnyi, Russian Federation; National Research University Higher School of Economics, Myasnitskaya ul. 20, 101000 Moscow, Russia
| | - O V Bocharova
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences RAS, str. Miklukho-Maklaya 16/10, Moscow 117997, Russian Federation; Moscow Institute of Physics and Technology, Institutsky per., 9, 141700 Dolgoprudnyi, Russian Federation
| | - P E Volynsky
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences RAS, str. Miklukho-Maklaya 16/10, Moscow 117997, Russian Federation
| | - A S Arseniev
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences RAS, str. Miklukho-Maklaya 16/10, Moscow 117997, Russian Federation; Moscow Institute of Physics and Technology, Institutsky per., 9, 141700 Dolgoprudnyi, Russian Federation
| | - R G Efremov
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences RAS, str. Miklukho-Maklaya 16/10, Moscow 117997, Russian Federation; Moscow Institute of Physics and Technology, Institutsky per., 9, 141700 Dolgoprudnyi, Russian Federation; National Research University Higher School of Economics, Myasnitskaya ul. 20, 101000 Moscow, Russia
| | - K S Mineev
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences RAS, str. Miklukho-Maklaya 16/10, Moscow 117997, Russian Federation; Moscow Institute of Physics and Technology, Institutsky per., 9, 141700 Dolgoprudnyi, Russian Federation.
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6
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Vargas-Perez M, Sierra-García G, Olvera HL, Chavez-Montes A, Gonzalez-Horta A. Impact of Melittin on Microalgae Cell Wall: A Monolayer Study. Nat Prod Commun 2018. [DOI: 10.1177/1934578x1801300822] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The cell wall of microalgae presents a formidable barrier necessary for survival in aquatic environments. Unfortunately, this barrier affects certain processes of interest in algal biotechnology such as oil extraction. Thus, assessing the impact of lytic peptides or enzymes on algal cell wall degradation is a critical first step to utilizing algal biomass more efficiently. Galactolipids are the main structural component of plant chloroplastic membranes and blue-green algae cell membranes. The predominant lipids in this class are monogalactosyl-diacylglycerol (MGDG) and digalactosyl-diacylglycerol (DGDG). Here using de Langmuir monolayer technique, we have demonstrated that melittin, a lytic peptide, has an intrinsic propensity to interact and perturb interfacial monolayers made of MGDG or DGDG that mimic microalgae cell wall.
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Affiliation(s)
- Magda Vargas-Perez
- Institute of Biotechnology, Faculty of Biological Sciences, Universidad Autonoma de Nuevo Leon, 66451 San Nicolas de los Garza, N.L. Mexico
| | - Gerardo Sierra-García
- Department of Chemistry, Faculty of Biological Sciences, Universidad Autonoma de Nuevo Leon, 66451 San Nicolas de los Garza, N.L. Mexico
| | - Hugo Luna Olvera
- Institute of Biotechnology, Faculty of Biological Sciences, Universidad Autonoma de Nuevo Leon, 66451 San Nicolas de los Garza, N.L. Mexico
| | - Abelardo Chavez-Montes
- Department of Chemistry, Faculty of Biological Sciences, Universidad Autonoma de Nuevo Leon, 66451 San Nicolas de los Garza, N.L. Mexico
| | - Azucena Gonzalez-Horta
- Laboratory of Genomic Science, Faculty of Biological Sciences, Universidad Autonoma de Nuevo Leon, 66451 San Nicolas de los Garza, N.L. Mexico
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7
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Liebau J, Mäler L. Immersion Depths of Lipid Carbons in Bicelles Measured by Paramagnetic Relaxation Enhancement. J Phys Chem B 2017; 121:7660-7670. [DOI: 10.1021/acs.jpcb.7b05822] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Jobst Liebau
- Department of Biochemistry
and Biophysics, Stockholm University, SE-106 91 Stockholm, Sweden
| | - Lena Mäler
- Department of Biochemistry
and Biophysics, Stockholm University, SE-106 91 Stockholm, Sweden
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8
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Liebau J, Ye W, Mäler L. Characterization of fast-tumbling isotropic bicelles by PFG diffusion NMR. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2017; 55:395-404. [PMID: 26662467 DOI: 10.1002/mrc.4399] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2015] [Revised: 11/12/2015] [Accepted: 11/17/2015] [Indexed: 06/05/2023]
Abstract
Small isotropic bicelles are versatile membrane mimetics, which, in contrast to micelles, provide a lipid bilayer and are at the same time suitable for solution-state NMR studies. The lipid composition of the bilayer is flexible allowing for incorporation of various head groups and acyl chain types. In bicelles, lipids are solubilized by detergents, which are localized in the rim of the disk-shaped lipid bilayer. Bicelles have been characterized by a broad array of biophysical methods, pulsed-field gradient NMR (PFG NMR) being one of them. PFG NMR can readily be used to measure diffusion coefficients of macromolecules. It is thus employed to characterize bicelle size and morphology. Even more importantly, PFG NMR can be used to study the degree of protein association to membranes. Here, we present the advances that have been made in producing small, fast-tumbling isotropic bicelles from a variety of lipids and detergents, together with insights on the morphology of such mixtures gained from PFG NMR. Furthermore, we review approaches to study protein-membrane interaction by PFG NMR. Copyright © 2015 John Wiley & Sons, Ltd.
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Affiliation(s)
- Jobst Liebau
- Department of Biochemistry and Biophysics, Stockholm University, Stockholm, Sweden
| | - Weihua Ye
- Department of Biochemistry and Biophysics, Stockholm University, Stockholm, Sweden
| | - Lena Mäler
- Department of Biochemistry and Biophysics, Stockholm University, Stockholm, Sweden
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9
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Szpryngiel S, Mäler L. Insights into the Membrane Interacting Properties of the C-Terminal Domain of the Monotopic Glycosyltransferase DGD2 in Arabidopsis thaliana. Biochemistry 2016; 55:6776-6786. [PMID: 27951648 DOI: 10.1021/acs.biochem.6b00559] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Glycosyltransferases (GTs) are responsible for regulating the membrane composition of plants. The synthesis of one of the main lipids in the membrane, the galactolipid digalactosyldiacylglycerol, is regulated by the enzyme digalactosyldiacylglycerol synthase 2 (atDGD2) under starving conditions, such as phosphate shortage. The enzyme belongs to the GT-B fold, characterized by two β/α/β Rossmann domains that are connected by a flexible linker. atDGD2 has previously been shown to attach to lipid membranes by the N-terminal domain via interactions with negatively charged lipids. The role of the C-terminal domain in the membrane interaction is, however, not known. Here we have used a combination of in silico prediction methods and biophysical experimental techniques to shed light on the membrane interacting properties of the C-terminal domain. Our results demonstrate that there is an amphipathic sequence, corresponding to residues V240-E258, that interacts with lipids in a charge-dependent way. A second sequence was identified as being potentially important, with a high charge density, but no amphipathic character. The features of the plant atDGD2 observed here are similar in prokaryotic glycosyltransferases. On the basis of our results, and by analogy to other glycosyltransferases, we propose that atDGD2 interacts with the membrane through the N-terminus and with parts of the C-terminus acting as a switch, allowing for a dynamic interaction with the membrane.
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Affiliation(s)
- Scarlett Szpryngiel
- Department of Biochemistry and Biophysics, Center for Biomembrane Research, The Arrhenius Laboratory, Stockholm University , 10691 Stockholm, Sweden
| | - Lena Mäler
- Department of Biochemistry and Biophysics, Center for Biomembrane Research, The Arrhenius Laboratory, Stockholm University , 10691 Stockholm, Sweden
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10
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Fast-tumbling bicelles constructed from native Escherichia coli lipids. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2016; 1858:2097-2105. [DOI: 10.1016/j.bbamem.2016.06.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2016] [Revised: 06/09/2016] [Accepted: 06/10/2016] [Indexed: 11/20/2022]
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11
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Liebau J, Pettersson P, Szpryngiel S, Mäler L. Membrane Interaction of the Glycosyltransferase WaaG. Biophys J 2016; 109:552-63. [PMID: 26244737 DOI: 10.1016/j.bpj.2015.06.036] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2015] [Revised: 06/17/2015] [Accepted: 06/19/2015] [Indexed: 11/30/2022] Open
Abstract
The glycosyltransferase WaaG is involved in the synthesis of lipopolysaccharides that constitute the outer leaflet of the outer membrane in Gram-negative bacteria such as Escherichia coli. WaaG has been identified as a potential antibiotic target, and inhibitor scaffolds have previously been investigated. WaaG is located at the cytosolic side of the inner membrane, where the enzyme catalyzes the transfer of the first outer-core glucose to the inner core of nascent lipopolysaccharides. Here, we characterized the binding of WaaG to membrane models designed to mimic the inner membrane of E. coli. Based on the crystal structure, we identified an exposed and largely α-helical 30-residue sequence, with a net positive charge and several aromatic amino acids, as a putative membrane-interacting region of WaaG (MIR-WaaG). We studied the peptide corresponding to this sequence, along with its bilayer interactions, using circular dichroism, fluorescence quenching, fluorescence anisotropy, and NMR. In the presence of dodecylphosphocholine, MIR-WaaG was observed to adopt a three-dimensional structure remarkably similar to the segment in the crystal structure. We found that the membrane interaction of WaaG is conferred at least in part by MIR-WaaG and that electrostatic interactions play a key role in binding. Moreover, we propose a mechanism of anchoring WaaG to the inner membrane of E. coli, where the central part of MIR-WaaG inserts into one leaflet of the bilayer. In this model, electrostatic interactions as well as surface-exposed Tyr residues bind WaaG to the membrane.
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Affiliation(s)
- Jobst Liebau
- Department of Biochemistry and Biophysics, Stockholm University, Stockholm, Sweden
| | - Pontus Pettersson
- Department of Biochemistry and Biophysics, Stockholm University, Stockholm, Sweden
| | - Scarlett Szpryngiel
- Department of Biochemistry and Biophysics, Stockholm University, Stockholm, Sweden
| | - Lena Mäler
- Department of Biochemistry and Biophysics, Stockholm University, Stockholm, Sweden.
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12
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Analysing DHPC/DMPC bicelles by diffusion NMR and multivariate decomposition. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2015; 1848:2910-7. [DOI: 10.1016/j.bbamem.2015.09.002] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2015] [Revised: 08/06/2015] [Accepted: 09/01/2015] [Indexed: 12/16/2022]
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13
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Liu Y, Li M, Yang Y, Xia Y, Nieh MP. The effects of temperature, salinity, concentration and PEGylated lipid on the spontaneous nanostructures of bicellar mixtures. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2014; 1838:1871-80. [DOI: 10.1016/j.bbamem.2014.02.004] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2013] [Revised: 12/23/2013] [Accepted: 02/11/2014] [Indexed: 10/25/2022]
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14
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Ariöz C, Ye W, Bakali A, Ge C, Liebau J, Götzke H, Barth A, Wieslander Å, Mäler L. Anionic Lipid Binding to the Foreign Protein MGS Provides a Tight Coupling between Phospholipid Synthesis and Protein Overexpression in Escherichia coli. Biochemistry 2013; 52:5533-44. [DOI: 10.1021/bi400616n] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Candan Ariöz
- Center for Biomembrane
Research, Department of Biochemistry
and Biophysics, Stockholm University, SE-106
91 Stockholm, Sweden
| | - Weihua Ye
- Center for Biomembrane
Research, Department of Biochemistry
and Biophysics, Stockholm University, SE-106
91 Stockholm, Sweden
| | - Amin Bakali
- Center for Biomembrane
Research, Department of Biochemistry
and Biophysics, Stockholm University, SE-106
91 Stockholm, Sweden
| | - Changrong Ge
- Center for Biomembrane
Research, Department of Biochemistry
and Biophysics, Stockholm University, SE-106
91 Stockholm, Sweden
| | - Jobst Liebau
- Center for Biomembrane
Research, Department of Biochemistry
and Biophysics, Stockholm University, SE-106
91 Stockholm, Sweden
| | - Hansjörg Götzke
- Center for Biomembrane
Research, Department of Biochemistry
and Biophysics, Stockholm University, SE-106
91 Stockholm, Sweden
| | - Andreas Barth
- Center for Biomembrane
Research, Department of Biochemistry
and Biophysics, Stockholm University, SE-106
91 Stockholm, Sweden
| | - Åke Wieslander
- Center for Biomembrane
Research, Department of Biochemistry
and Biophysics, Stockholm University, SE-106
91 Stockholm, Sweden
| | - Lena Mäler
- Center for Biomembrane
Research, Department of Biochemistry
and Biophysics, Stockholm University, SE-106
91 Stockholm, Sweden
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