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Vélez M. How Does the Spatial Confinement of FtsZ to a Membrane Surface Affect Its Polymerization Properties and Function? Front Microbiol 2022; 13:757711. [PMID: 35592002 PMCID: PMC9111741 DOI: 10.3389/fmicb.2022.757711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Accepted: 01/27/2022] [Indexed: 11/15/2022] Open
Abstract
FtsZ is the cytoskeletal protein that organizes the formation of the septal ring and orchestrates bacterial cell division. Its association to the membrane is essential for its function. In this mini-review I will address the question of how this association can interfere with the structure and dynamic properties of the filaments and argue that its dynamics could also remodel the underlying lipid membrane through its activity. Thus, lipid rearrangement might need to be considered when trying to understand FtsZ’s function. This new element could help understand how FtsZ assembly coordinates positioning and recruitment of the proteins forming the septal ring inside the cell with the activity of the machinery involved in peptidoglycan synthesis located in the periplasmic space.
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Affiliation(s)
- Marisela Vélez
- Instituto de Catálisis y Petroleoquímica, Consejo Superior de Investigaciones Científicas (CSIC), Madrid, Spain
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2
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Roy S, Kumari M, Haloi P, Chawla S, Konkimalla VB, Kumar A, Kashyap HK, Jaiswal A. Quaternary ammonium substituted pullulan accelerates wound healing and disinfects Staphylococcus aureus infected wounds in mouse through an atypical 'non-pore forming' pathway of bacterial membrane disruption. Biomater Sci 2021; 10:581-601. [PMID: 34907410 DOI: 10.1039/d1bm01542g] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The emergence of multi-drug resistant pathogens has fueled the search for alternatives to the existing line of antibiotics that can eradicate pathogens without inducing resistance development. Here, we report the accelerated wound healing and disinfection potential of a non-amphiphilic quaternized fungal exopolysaccharide, pullulan, without resistance generation in pathogens. The quaternary ammonium substituted pullulan (CP) derivatives showed excellent bactericidal activity against both Gram negative (MBC90 = 1.5 μg mL-1) and Gram positive (MBC90 = 0.25 μg mL-1) bacteria at very low concentrations without showing any toxicity towards mammalian cells. A combined approach of atomistic molecular dynamics simulation and experimental assays revealed that CP exerts a membrane directed bactericidal action through an atypical "non-pore forming" pathway which is not yet established for any known antibacterial polysaccharides. This involves an increase in membrane roughness, disorder among anionic lipid tails, formation of localized anionic lipid clusters and membrane depolarization, finally leading to physical disruption of the membrane integrity. Moreover, CP also displayed biofilm eradication abilities and emerged as an excellent therapeutic material for disinfection and healing of infected wounds. The present work shows the potential of exploiting polysaccharides as next-generation broad-spectrum antimicrobials and provides a platform for further development of rationally designed pullulan-based functional materials for biomedical applications.
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Affiliation(s)
- Shounak Roy
- School of Basic Sciences, Indian Institute of Technology Mandi, Kamand, Mandi, Himachal Pradesh 175005, India.
| | - Monika Kumari
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India.
| | - Prakash Haloi
- School of Biological Sciences, National Institute of Science Education and Research, HBNI, Jatni, Odisha 752050, India
| | - Saurabh Chawla
- School of Biological Sciences, National Institute of Science Education and Research, HBNI, Jatni, Odisha 752050, India
| | - V Badireenath Konkimalla
- School of Biological Sciences, National Institute of Science Education and Research, HBNI, Jatni, Odisha 752050, India
| | - Ajith Kumar
- School of Basic Sciences, Indian Institute of Technology Mandi, Kamand, Mandi, Himachal Pradesh 175005, India.
| | - Hemant K Kashyap
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India.
| | - Amit Jaiswal
- School of Basic Sciences, Indian Institute of Technology Mandi, Kamand, Mandi, Himachal Pradesh 175005, India.
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3
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Jochelavicius K, Pereira AR, Fiamingo A, Nobre TM, Campana-Filho SP, Oliveira ON. Chitosan effects on monolayers of zwitterionic, anionic and a natural lipid extract from E. coli at physiological pH. Colloids Surf B Biointerfaces 2021; 209:112146. [PMID: 34634541 DOI: 10.1016/j.colsurfb.2021.112146] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Revised: 09/24/2021] [Accepted: 09/28/2021] [Indexed: 10/20/2022]
Abstract
Langmuir monolayers are used to simulate the biological membrane environment, acting as a mimetic system of the outer or the inner membrane leaflet. Herein, we analyze the interaction of membrane models with a partially N-acetylated chitosan (Ch35%) possessing a quasi-ideal random pattern of acetylation, full water solubility up to pH ≈ 8.5 and unusually high weight average molecular weight. Lipid monolayers containing dipalmitoyl phosphatidyl choline (DPPC), dipalmitoyl phosphatidyl ethalonamine (DPPE), dipalmitoyl phosphatidyl glycerol (DPPG) or E. coli total lipid extract were spread onto subphases buffered at pH 4.5 or 7.4. The incorporation of Ch35% chitosan caused monolayer expansion and a general trend of decreasing monolayer rigidity with Ch35% concentration. Due to its relatively high content of N-acetylglucosamine (GlcNAc) units, Ch35% interactions with negatively charged monolayers and with E. coli extract were weaker than those involving zwitterionic monolayers or lipid rafts. While the smaller interaction with negatively charged lipids was unexpected, this finding can be attributed to the degree of acetylation (35%) which imparts a small number of charged groups for Ch35% to interact. Chitosan properties are therefore determinant for interactions with model cell membranes, which explains the variability in chitosan bactericide activity in the literature. This is the first study on the effects from chitosans on realistic models of bacterial membranes under physiological pH.
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Affiliation(s)
- Karen Jochelavicius
- Sao Carlos Institute of Physics, University of Sao Paulo, Sao Carlos, SP, Brazil
| | - Andressa R Pereira
- Sao Carlos Institute of Physics, University of Sao Paulo, Sao Carlos, SP, Brazil
| | - Anderson Fiamingo
- Sao Carlos Institute of Physics, University of Sao Paulo, Sao Carlos, SP, Brazil
| | - Thatyane M Nobre
- Sao Carlos Institute of Physics, University of Sao Paulo, Sao Carlos, SP, Brazil
| | | | - Osvaldo N Oliveira
- Sao Carlos Institute of Physics, University of Sao Paulo, Sao Carlos, SP, Brazil.
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Differential impact of synthetic antitumor lipid drugs on the membrane organization of phosphatidic acid and diacylglycerol monolayers. Chem Phys Lipids 2020; 229:104896. [PMID: 32184083 DOI: 10.1016/j.chemphyslip.2020.104896] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Revised: 02/19/2020] [Accepted: 03/11/2020] [Indexed: 12/16/2022]
Abstract
Anti-tumour lipids are synthetic analogues of lysophosphatidylcholine. These drugs are both cytotoxic and cytostatic, and more interestingly, exert these effects preferentially in tumour cells. While the exact mechanism of action isn't fully elucidated, these drugs appear to preferentially partition into rigid lipid domains in cell membranes. Upon insertion, the compounds alter membrane domain organization, disrupt normal signal transduction, and cause cell death. Recently, it has been reported that these drugs induce accumulation of diacylglycerol in yeast cells which in turn sensitizes cells to the drugs. Conversely, phosphatidic acid accumulation appears to protect cells against the drugs. In the current work, the aim was to compare the biophysical effects of the drugs edelfosine, miltefosine and perifosine on monolayers of dimyristoyl phosphatidic acid, dimyristoyl glycerol and an equimolar mixture, to understand how these lipids modulate the mode of action. Surface pressure - area isotherms, compression moduli and Brewster angle microscopy were used to compare drug effects on lipid packing, monolayer compressibility and lateral domain organization of these films. Results suggest that edelfosine and miltefosine have stabilizing effects on all of the monolayers, while perifosine destabilizes dimyristoyl glycerol and the equimolar mixture. Additionally, all three drugs change the morphology of the domains observed. Based on these results the stabilization of diacylgylcerol by edelfosine and miltefosine may contribute to the mode of action as diacylglycerol is a known disruptor of bilayers. Perifosine however does not stabilize diacylglycerol, and therefore cell death may occur through a more direct inhibition of specific signal transduction. These results suggest that perifosine may illicit cytotoxicity through a different mechanism compared to the other antitumor lipid drugs.
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5
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Applications of Brewster angle microscopy from biological materials to biological systems. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2017; 1859:1749-1766. [PMID: 28655618 DOI: 10.1016/j.bbamem.2017.06.016] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Revised: 06/22/2017] [Accepted: 06/23/2017] [Indexed: 12/22/2022]
Abstract
Brewster angle microscopy (BAM) is a powerful technique that allows for real-time visualization of Langmuir monolayers. The lateral organization of these films can be investigated, including phase separation and the formation of domains, which may be of different sizes and shapes depending on the properties of the monolayer. Different molecules or small changes within a molecule such as the molecule's length or presence of a double bond can alter the monolayer's lateral organization that is usually undetected using surface pressure-area isotherms. The effect of such changes can be clearly observed using BAM in real-time, under full hydration, which is an experimental advantage in many cases. While previous BAM reviews focused more on selected compounds or compared the impact of structural variations on the lateral domain formation, this review provided a broader overview of BAM application using biological materials and systems including the visualization of amphiphilic molecules, proteins, drugs, extracts, DNA, and nanoparticles at the air-water interface.
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Konarzewska D, Juhaniewicz J, Güzeloğlu A, Sęk S. Characterization of planar biomimetic lipid films composed of phosphatidylethanolamines and phosphatidylglycerols from Escherichia coli. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2017; 1859:475-483. [DOI: 10.1016/j.bbamem.2017.01.010] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2016] [Revised: 01/03/2017] [Accepted: 01/05/2017] [Indexed: 01/27/2023]
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Barreto-Santamaría A, Curtidor H, Arévalo-Pinzón G, Herrera C, Suárez D, Pérez WH, Patarroyo ME. A New Synthetic Peptide Having Two Target of Antibacterial Action in E. coli ML35. Front Microbiol 2016; 7:2006. [PMID: 28066341 PMCID: PMC5167725 DOI: 10.3389/fmicb.2016.02006] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Accepted: 11/30/2016] [Indexed: 11/13/2022] Open
Abstract
The increased resistance of microorganisms to the different antimicrobials available to today has highlighted the need to find new therapeutic agents, including natural and/or synthetic antimicrobial peptides (AMPs). This study has evaluated the antimicrobial activity of synthetic peptide 35409 (RYRRKKKMKKALQYIKLLKE) against Staphylococcus aureus ATCC 29213, Pseudomonas aeruginosa ATCC 15442 and Escherichia coli ML 35 (ATCC 43827). The results have shown that peptide 35409 inhibited the growth of these three bacterial strains, having 16-fold greater activity against E. coli and P. aeruginosa, but requiring less concentration regarding E. coli (22 μM). When analyzing this activity against E. coli compared to time taken, it was found that this peptide inhibited bacterial growth during the first 60 min and reduced CFU/mL 1 log after 120 min had elapsed. This AMP permeabilized the E. coli membrane by interaction with membrane phospholipids, mainly phosphatidylethanolamine, inhibited cell division and induced filamentation, suggesting two different targets of action within a bacterial cell. Cytotoxicity studies revealed that peptide 35409 had low hemolytic activity and was not cytotoxic for two human cell lines. We would thus propose, in the light of these findings, that the peptide 35409 sequence should provide a promising template for designing broad-spectrum AMPs.
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Affiliation(s)
- Adriana Barreto-Santamaría
- Receptor-Ligand Department, Fundación Instituto de Inmunología de ColombiaBogotá, Colombia; Faculty of Sciences and Education, Universidad Distrital Francisco José de CaldasBogotá, Colombia; School of Medicine and Health sciences, Universidad del RosarioBogotá, Colombia
| | - Hernando Curtidor
- Receptor-Ligand Department, Fundación Instituto de Inmunología de ColombiaBogotá, Colombia; School of Medicine and Health sciences, Universidad del RosarioBogotá, Colombia
| | - Gabriela Arévalo-Pinzón
- Receptor-Ligand Department, Fundación Instituto de Inmunología de ColombiaBogotá, Colombia; School of Medicine and Health sciences, Universidad del RosarioBogotá, Colombia
| | - Chonny Herrera
- Receptor-Ligand Department, Fundación Instituto de Inmunología de ColombiaBogotá, Colombia; School of Medicine and Health sciences, Universidad del RosarioBogotá, Colombia
| | - Diana Suárez
- Receptor-Ligand Department, Fundación Instituto de Inmunología de ColombiaBogotá, Colombia; School of Medicine and Health sciences, Universidad del RosarioBogotá, Colombia
| | - Walter H Pérez
- Escuela Colombiana de Carreras Industriales Bogotá, Colombia
| | - Manuel E Patarroyo
- Receptor-Ligand Department, Fundación Instituto de Inmunología de ColombiaBogotá, Colombia; Faculty of Medicine, Universidad Nacional de ColombiaBogotá, Colombia
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8
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Baul U, Kuroda K, Vemparala S. Interaction of multiple biomimetic antimicrobial polymers with model bacterial membranes. J Chem Phys 2015; 141:084902. [PMID: 25173040 DOI: 10.1063/1.4893440] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Using atomistic molecular dynamics simulations, interaction of multiple synthetic random copolymers based on methacrylates on prototypical bacterial membranes is investigated. The simulations show that the cationic polymers form a micellar aggregate in water phase and the aggregate, when interacting with the bacterial membrane, induces clustering of oppositely charged anionic lipid molecules to form clusters and enhances ordering of lipid chains. The model bacterial membrane, consequently, develops lateral inhomogeneity in membrane thickness profile compared to polymer-free system. The individual polymers in the aggregate are released into the bacterial membrane in a phased manner and the simulations suggest that the most probable location of the partitioned polymers is near the 1-palmitoyl-2-oleoyl-phosphatidylglycerol (POPG) clusters. The partitioned polymers preferentially adopt facially amphiphilic conformations at lipid-water interface, despite lacking intrinsic secondary structures such as α-helix or β-sheet found in naturally occurring antimicrobial peptides.
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Affiliation(s)
- Upayan Baul
- The Institute of Mathematical Sciences, C.I.T. Campus, Taramani, Chennai 600113, India
| | - Kenichi Kuroda
- Department of Biologic and Materials Sciences, University of Michigan School of Dentistry, Ann Arbor, Michigan 48109, USA
| | - Satyavani Vemparala
- The Institute of Mathematical Sciences, C.I.T. Campus, Taramani, Chennai 600113, India
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Matsumoto K, Hara H, Fishov I, Mileykovskaya E, Norris V. The membrane: transertion as an organizing principle in membrane heterogeneity. Front Microbiol 2015; 6:572. [PMID: 26124753 PMCID: PMC4464175 DOI: 10.3389/fmicb.2015.00572] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2015] [Accepted: 05/25/2015] [Indexed: 01/05/2023] Open
Abstract
The bacterial membrane exhibits a significantly heterogeneous distribution of lipids and proteins. This heterogeneity results mainly from lipid-lipid, protein-protein, and lipid-protein associations which are orchestrated by the coupled transcription, translation and insertion of nascent proteins into and through membrane (transertion). Transertion is central not only to the individual assembly and disassembly of large physically linked groups of macromolecules (alias hyperstructures) but also to the interactions between these hyperstructures. We review here these interactions in the context of the processes in Bacillus subtilis and Escherichia coli of nutrient sensing, membrane synthesis, cytoskeletal dynamics, DNA replication, chromosome segregation, and cell division.
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Affiliation(s)
- Kouji Matsumoto
- Department of Biochemistry and Molecular Biology, Graduate School of Science and Engineering, Saitama University, SaitamaJapan
| | - Hiroshi Hara
- Department of Biochemistry and Molecular Biology, Graduate School of Science and Engineering, Saitama University, SaitamaJapan
| | - Itzhak Fishov
- Department of Life Sciences, Ben-Gurion University of the Negev, Beer-ShevaIsrael
| | - Eugenia Mileykovskaya
- Department of Biochemistry and Molecular Biology, University of Texas Medical School at HoustonHouston, TX, USA
| | - Vic Norris
- Laboratory of Microbiology Signals and Microenvironment EA 4312, Department of Science, University of Rouen, Mont-Saint-AignanFrance
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10
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Baul U, Vemparala S. Membrane-Bound Conformations of Antimicrobial Agents and Their Modes of Action. ADVANCES IN PLANAR LIPID BILAYERS AND LIPOSOMES 2015. [DOI: 10.1016/bs.adplan.2015.06.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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11
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Norris V. Speculations on the initiation of chromosome replication in Escherichia coli: the dualism hypothesis. Med Hypotheses 2011; 76:706-16. [PMID: 21349650 DOI: 10.1016/j.mehy.2011.02.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2010] [Revised: 01/23/2011] [Accepted: 02/01/2011] [Indexed: 10/18/2022]
Abstract
The exact nature of the mechanism that triggers initiation of chromosome replication in the best understood of all organisms, Escherichia coli, remains mysterious. Here, I suggest that this mechanism evolved in response to the problems that arise if chromosome replication does not occur. E. coli is now known to be highly structured. This leads me to propose a mechanism for initiation of replication based on the dynamics of large assemblies of molecules and macromolecules termed hyperstructures. In this proposal, hyperstructures and their constituents are put into two classes, non-equilibrium and equilibrium, that spontaneously separate and that are appropriate for life in either good or bad conditions. Maintaining the right ratio(s) of non-equilibrium to equilibrium hyperstructures is therefore a major challenge for cells. I propose that this maintenance entails a major transfer of material from equilibrium to non-equilibrium hyperstructures once per cell and I further propose that this transfer times the cell cycle. More specifically, I speculate that the dialogue between hyperstructures involves the structuring of water and the condensation of cations and that one of the outcomes of ion condensation on ribosomal hyperstructures and decondensation from the origin hyperstructure is the separation of strands at oriC responsible for triggering initiation of replication. The dualism hypothesis that comes out of these speculations may help integrate models for initiation of replication, chromosome segregation and cell division with the 'prebiotic ecology' scenario of the origins of life.
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Affiliation(s)
- Vic Norris
- AMMIS Laboratory, EA 3829, Department of Biology, University of Rouen, 76821 Mont Saint Aignan, France.
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Benamara H, Rihouey C, Jouenne T, Alexandre S. Impact of the biofilm mode of growth on the inner membrane phospholipid composition and lipid domains in Pseudomonas aeruginosa. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2010; 1808:98-105. [PMID: 20849811 DOI: 10.1016/j.bbamem.2010.09.004] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2010] [Revised: 09/02/2010] [Accepted: 09/03/2010] [Indexed: 11/30/2022]
Abstract
Many studies using genetic and proteomic approaches have revealed phenotypic differences between planktonic and sessile bacteria but the mechanisms of biofilm formation and the switch between the two growth modes are not well understood yet. In this study, we focused on inner membrane lipidome modifications when Pseudomonas aeruginosa cells were grown as biofilm. Lipid analyses were performed by Electrospray Ionization Mass Spectrometry. Results showed a drastic decrease of the uneven-numbered chain phospholipids and a slight increase of long chain PEs in sessile organisms as compared with planktonic counterparts, suggesting a better lipid stability in the bilayer and a decrease in membrane fluidity. The impact of sessile growth on lipid domains was then investigated by Brewster Angle Microscopy (BAM) and Atomic Force Microscopy (AFM). Observations showed that inner membrane lipids of P. aeruginosa formed domains when the pressure was close to physiological conditions and that these domains were larger for lipids extracted from biofilm bacteria. This is coherent with the mass spectrometry analyses.
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Affiliation(s)
- Hayette Benamara
- PBS laboratory, UMR 6270, FR 3038, CNRS, Proteomic Platform of the IFRMP23, University of Rouen, 76821 Mont-Saint-Aignan cedex, France
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Picas L, Suárez-Germà C, Teresa Montero M, Hernández-Borrell J. Force Spectroscopy Study of Langmuir−Blodgett Asymmetric Bilayers of Phosphatidylethanolamine and Phosphatidylglycerol. J Phys Chem B 2010; 114:3543-9. [DOI: 10.1021/jp910882e] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Laura Picas
- Departament de Fisicoquímica, Facultat de Farmàcia, Universitat de Barcelona, 08028-Barcelona, Spain, and Institut de Nanociència i Nanotecnologia de la Universitat de Barcelona (IN2UB), 08028-Barcelona, Spain
| | - Carme Suárez-Germà
- Departament de Fisicoquímica, Facultat de Farmàcia, Universitat de Barcelona, 08028-Barcelona, Spain, and Institut de Nanociència i Nanotecnologia de la Universitat de Barcelona (IN2UB), 08028-Barcelona, Spain
| | - M. Teresa Montero
- Departament de Fisicoquímica, Facultat de Farmàcia, Universitat de Barcelona, 08028-Barcelona, Spain, and Institut de Nanociència i Nanotecnologia de la Universitat de Barcelona (IN2UB), 08028-Barcelona, Spain
| | - Jordi Hernández-Borrell
- Departament de Fisicoquímica, Facultat de Farmàcia, Universitat de Barcelona, 08028-Barcelona, Spain, and Institut de Nanociència i Nanotecnologia de la Universitat de Barcelona (IN2UB), 08028-Barcelona, Spain
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Picas L, Montero MT, Morros A, Cabañas ME, Seantier B, Milhiet PE, Hernández-Borrell J. Calcium-Induced Formation of Subdomains in Phosphatidylethanolamine−Phosphatidylglycerol Bilayers: A Combined DSC, 31P NMR, and AFM Study. J Phys Chem B 2009; 113:4648-55. [DOI: 10.1021/jp8102468] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Laura Picas
- Departament de Fisicoquímica, Facultat de Farmàcia, Universitat de Barcelona (UB), and Institut de Nanociència i Nanotecnologia de la Universitat de Barcelona (IN2UB), E-08028 Barcelona, Spain, Unitat de Biofísica, Departament de Bioquímica i Biologia Molecular, Facultat de Medicina, Centre d’Estudis en Biofísica (CEB), and Servei de Ressonància Magnètica Nuclear (SeRMN), UAB, E-08193 Bellaterra, Barcelona, Spain, and Inserm, Unité 554, Montpellier, France, and Centre de Biochimie Structurale, Université
| | - M. Teresa Montero
- Departament de Fisicoquímica, Facultat de Farmàcia, Universitat de Barcelona (UB), and Institut de Nanociència i Nanotecnologia de la Universitat de Barcelona (IN2UB), E-08028 Barcelona, Spain, Unitat de Biofísica, Departament de Bioquímica i Biologia Molecular, Facultat de Medicina, Centre d’Estudis en Biofísica (CEB), and Servei de Ressonància Magnètica Nuclear (SeRMN), UAB, E-08193 Bellaterra, Barcelona, Spain, and Inserm, Unité 554, Montpellier, France, and Centre de Biochimie Structurale, Université
| | - Antoni Morros
- Departament de Fisicoquímica, Facultat de Farmàcia, Universitat de Barcelona (UB), and Institut de Nanociència i Nanotecnologia de la Universitat de Barcelona (IN2UB), E-08028 Barcelona, Spain, Unitat de Biofísica, Departament de Bioquímica i Biologia Molecular, Facultat de Medicina, Centre d’Estudis en Biofísica (CEB), and Servei de Ressonància Magnètica Nuclear (SeRMN), UAB, E-08193 Bellaterra, Barcelona, Spain, and Inserm, Unité 554, Montpellier, France, and Centre de Biochimie Structurale, Université
| | - Miquel E. Cabañas
- Departament de Fisicoquímica, Facultat de Farmàcia, Universitat de Barcelona (UB), and Institut de Nanociència i Nanotecnologia de la Universitat de Barcelona (IN2UB), E-08028 Barcelona, Spain, Unitat de Biofísica, Departament de Bioquímica i Biologia Molecular, Facultat de Medicina, Centre d’Estudis en Biofísica (CEB), and Servei de Ressonància Magnètica Nuclear (SeRMN), UAB, E-08193 Bellaterra, Barcelona, Spain, and Inserm, Unité 554, Montpellier, France, and Centre de Biochimie Structurale, Université
| | - Bastien Seantier
- Departament de Fisicoquímica, Facultat de Farmàcia, Universitat de Barcelona (UB), and Institut de Nanociència i Nanotecnologia de la Universitat de Barcelona (IN2UB), E-08028 Barcelona, Spain, Unitat de Biofísica, Departament de Bioquímica i Biologia Molecular, Facultat de Medicina, Centre d’Estudis en Biofísica (CEB), and Servei de Ressonància Magnètica Nuclear (SeRMN), UAB, E-08193 Bellaterra, Barcelona, Spain, and Inserm, Unité 554, Montpellier, France, and Centre de Biochimie Structurale, Université
| | - Pierre-Emmanuel Milhiet
- Departament de Fisicoquímica, Facultat de Farmàcia, Universitat de Barcelona (UB), and Institut de Nanociència i Nanotecnologia de la Universitat de Barcelona (IN2UB), E-08028 Barcelona, Spain, Unitat de Biofísica, Departament de Bioquímica i Biologia Molecular, Facultat de Medicina, Centre d’Estudis en Biofísica (CEB), and Servei de Ressonància Magnètica Nuclear (SeRMN), UAB, E-08193 Bellaterra, Barcelona, Spain, and Inserm, Unité 554, Montpellier, France, and Centre de Biochimie Structurale, Université
| | - Jordi Hernández-Borrell
- Departament de Fisicoquímica, Facultat de Farmàcia, Universitat de Barcelona (UB), and Institut de Nanociència i Nanotecnologia de la Universitat de Barcelona (IN2UB), E-08028 Barcelona, Spain, Unitat de Biofísica, Departament de Bioquímica i Biologia Molecular, Facultat de Medicina, Centre d’Estudis en Biofísica (CEB), and Servei de Ressonància Magnètica Nuclear (SeRMN), UAB, E-08193 Bellaterra, Barcelona, Spain, and Inserm, Unité 554, Montpellier, France, and Centre de Biochimie Structurale, Université
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