| People | Locations | Statistics |
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| 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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Mann, Stephen
University of Bristol
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (25/25 displayed)
- 2020Mixed liposomes containing gram-positive bacteria lipidscitations
- 2017Self-Assembly of Colloidal Nanocomposite Hydrogels Using 1D Cellulose Nanocrystals and 2D Exfoliated Organoclay Layerscitations
- 2015Multimodal Plasmonics in Fused Colloidal Networkscitations
- 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
- 2014Molecular dynamics simulations reveal a dielectric-responsive coronal structure in protein-polymer surfactant hybrid nanoconstructscitations
- 2013Electrochemical crystallization of spatially organized copper microwire arrays within biomineralized (dentine) templatescitations
- 2013Apoferritin-encapsulated PbS quantum dots significantly inhibit growth of colorectal carcinoma cellscitations
- 2013Apoferritin-encapsulated PbS quantum dots significantly inhibit growth of colorectal carcinoma cellscitations
- 2013Directing Chondrogenesis of Stem Cells with Specific Blends of Cellulose and Silkcitations
- 2013The reinforcement effects of graphene oxide nanoplatelets on the mechanical and viscoelastic properties of natural rubber
- 2012High magnetic field quantum transport in Au nanoparticle-cellulose filmscitations
- 2012Polymer/nucleotide droplets as bio-inspired functional micro-compartmentscitations
- 2012The differential effect of apoferritin-PbS nanocomposites on cell cycle progression in normal and cancerous cellscitations
- 2011Lamellar nanocomposite films of purple membrane and poly(acrylate)
- 2011Guest-Molecule-Directed Assembly of Mesostructured Nanocomposite Polymer/Organoclay Hydrogelscitations
- 2011Supramolecular hydrogels derived from silver ion-mediated self-assembly of 5 '-guanosine monophosphatecitations
- 2010Assembly of poly(methacrylate)/purple membrane lamellar nanocomposite films by intercalation and in situ polymerisationcitations
- 2009Structure and Properties of Silicified Purple Membrane Thin Filmscitations
- 2009Hydroxyapatite pattern formation in PVA gelscitations
- 2009Membrane stabilization and transformation in organoclay-vesicle hybrid constructscitations
- 2009Immobilisation and encapsulation of functional protein-inorganic constructscitations
- 2007Bio-functional mesolamellar nanocomposites based on inorganic/polymer intercalation in purple membrane (bacteriorhodopsin) filmscitations
- 2007Biomimetic hydroxyapatite-drug nanocrystals as potential bone substitutes with antitumor drug delivery propertiescitations
- 2007Influence of polymer co-intercalation on guest release from aminopropyl-functionalized magnesium phyllosilicate mesolamellar nanocompositescitations
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.