| People | Locations | Statistics |
|---|---|---|
| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Briscoe, Wuge H.
University of Bristol
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (27/27 displayed)
- 2022Interfacial complexation of a neutral amphiphilic ‘tardigrade’ co-polymer with a cationic surfactant
- 2022Interfacial complexation of a neutral amphiphilic ‘tardigrade’ co-polymer with a cationic surfactant: Transition from synergy to competitioncitations
- 2022Interfacial complexation of a neutral amphiphilic ‘tardigrade’ co-polymer with a cationic surfactant: Transition from synergy to competitioncitations
- 2022Interfacial complexation of a neutral amphiphilic ‘tardigrade’ co-polymer with a cationic surfactant:Transition from synergy to competition
- 2021Heads or tails:Nanostructure and molecular orientations in organised erucamide surface layerscitations
- 2021Friction at nanopillared polymer surfaces beyond Amontons' laws:Stick-slip amplitude coefficient (SSAC) and multiparametric nanotribological propertiescitations
- 2021Friction at nanopillared polymer surfaces beyond Amontons' lawscitations
- 2021Heads or tailscitations
- 2020Mixed liposomes containing gram-positive bacteria lipidscitations
- 2020Interactions between PAMAM dendrimers and DOPC lipid multilayerscitations
- 2020Synergy, competition, and the “hanging” polymer layer:Interactions between a neutral amphiphilic ‘tardigrade’ comb co-polymer with an anionic surfactant at the air-water interfacecitations
- 2020Synergy, competition, and the “hanging” polymer layer: Interactions between a neutral amphiphilic ‘tardigrade’ comb co-polymer with an anionic surfactant at the air-water interfacecitations
- 2020Multiscale characterisation of single synthetic fibres:Surface morphology and nanomechanical propertiescitations
- 2020Interactions between PAMAM dendrimers and DOPC lipid multilayers:Membrane thinning and structural disordercitations
- 2019Bénard-Marangoni Dendrites upon Evaporation of a Reactive ZnO Nanofluid Dropletcitations
- 2018Surface structure of few layer graphenecitations
- 2017Interfacial and structural characteristics of polyelectrolyte multilayers used as cushions for supported lipid bilayerscitations
- 2016Influence of solvent polarity on the structure of drop-cast electroactive tetra(aniline)-surfactant thin filmscitations
- 2016Influence of solvent polarity on the structure of drop-cast electroactive tetra(aniline)-surfactant thin filmscitations
- 2016Structure of lipid multilayerscitations
- 2016Structure of lipid multilayers:Via drop casting of aqueous liposome dispersionscitations
- 2016Hydrophilic nanoparticles stabilising mesophase curvature at low concentration but disrupting mesophase order at higher concentrationscitations
- 2016Stability of polymersomes prepared by size exclusion chromatography and extrusioncitations
- 2014In situ X-ray reflectivity studies of molecular and molecular-cluster intercalation within purple membrane filmscitations
- 2014In situ X-ray reflectivity studies of molecular and molecular-cluster intercalation within purple membrane filmscitations
- 2011Lamellar nanocomposite films of purple membrane and poly(acrylate)
- 2010Assembly of poly(methacrylate)/purple membrane lamellar nanocomposite films by intercalation and in situ polymerisationcitations
Places of action
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article
Mixed liposomes containing gram-positive bacteria lipids
Abstract
Lipoteichoic acid (LTA), a surface associated polymer amphiphile tethered directly to the Gram-positive bacterial cytoplasmic membrane, is a key structural and functional membrane component. Its composition in the membrane is regulated by bacteria under different physiological conditions. How such LTA compositional variations modulate the membrane structural stability and integrity is poorly understood. Here, we have investigated structural changes in mixed liposomes mimicking the lipid composition of Gram-positive bacteria membranes, in which the concentration of Bacillus Subtilis LTA was varied between 0–15 mol%. Small-angle neutron scattering (SANS) and dynamic light scattering (DLS) measurements indicated formation of mixed unilamellar vesicles, presumably stabilized by the negatively charged LTA polyphosphates. The vesicle size increased with the LTA molar concentration up to ∼6.5 mol%, accompanied by a broadened size distribution, and further increasing the LTA concentration led to a decrease in the vesicle size. At 80 °C, SANS analyses showed the formation of larger vesicles with thinner shells. Complementary Cryo-TEM imaging confirmed the vesicle formation and the size increase with LTA addition, as well as the presence of interconnected spherical aggregates of smaller size at higher LTA concentrations. The results are discussed in light of the steric and electrostatic interactions of the bulky LTA molecules with increased chain fluidity at the higher temperature, which affect the molecular packing and interactions, and thus depend on the LTA composition, in the membrane.