Search for dissertations about: "bilayer curvature"

Showing result 1 - 5 of 18 swedish dissertations containing the words bilayer curvature.

  2. 1. A computational approach to curvature sensing in lipid bilayers

    Author : Federico Elías-Wolff; Alexander Lyubartsev; Max Berkowitz; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; curvature sensing; membrane curvature; cardiolipin; amphipathic helix; symmetric multimers; lipid bilayer; molecular dynamics; Biophysics; biofysik;

    Abstract : Local curvature is a key driving force for spatial organization of cellular membranes, via a phenomenon known as membrane curvature sensing, where the binding energy of membrane associated macromolecules depends on the local membrane shape. However, the microscopic mechanisms of curvature sensing are not well understood. READ MORE

  4. 2. Nanosized Bilayer Disks as Model Membranes for Interaction Studies

    Author : Anna Lundquist; Katarina Edwards; Marja-Liisa Riekkola; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Disk; disc; lipid bilayer; PEG-lipid; model membrane; interaction; partitioning; drug; liposome; cryo-TEM; neutron scattering; capillary electrophoresis; immobilization; biosensor; membrane protein; melittin; Chemistry; Kemi;

    Abstract : PEG-lipid stabilized bilayer disks have been found in lipid mixtures containing polyethylene glycol (PEG)-lipids where the combination of a high bending rigidity and low PEG-lipid/lipid miscibility favours disk formation. The disks are planar and circular in shape and their long-term stability is excellent. READ MORE

  5. 3. Lipid bilayers versus monolayers- Sponge phases and skin lipid domains

    Author : Katarina Ekelund; Livsmedelsteknik; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; fatty acids; Langmuir-Blodgett films; AFM; domains; stratum corneum; bilayer curvature; lipids; glycerol monooleate; phase behaviour; sponge phase; L3 phase; Livsmedelsteknik; cholesterol; Food and drink technology;

    Abstract : The L3, or sponge, phase is a thermodynamically stable isotropic liquid consisting of a surfactant membrane in aqueous solution. A solvent induced L3 phase is shown in systems of solvent, monoolein and water. READ MORE

  6. 4. Electrostatic Interactions in Complex Liquids : A Thermodynamic Analysis Based on the Poisson-Boltzmann Equation and the Flexible Surface Model

    Author : Ingemar Carlsson; Fysikalisk kemi; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; AOT; AerosolOT; ionic surfactant; spontaneous curvature; bending modulus; bending energy; Helfrich curvature energy; fluid membrane; complex liquid; flexible surface model; micelle; counterion; Poisson-Boltzmann equation; cell model; L3 phase; sponge phas; Physical chemistry; Fysikalisk kemi;

    Abstract : The aim of this study was to analyse physico-chemical properties of some complex liquids using the Poisson-Boltzmann (PB) cell model; to extend the theory to cover bilayer systems with complex global geometry; finally to apply this new extended model to such bilayer systems. The PB cell model provides a practical tool to examine counterion association and phase behaviour for structures of simple geometries; cylindrical and spherical. READ MORE

  7. 5. Bilayer Discs - Fundamental Investigations and Applications of Nanosized Membrane Models

    Author : Emma Johansson; Katarina Edwards; Mats Almgren; Sven Engström; Uppsala universitet; []
    Keywords : Chemistry; disc; threadlike micelle; liposome; model membrane; drug partitioning; cryo-TEM; Kemi;

    Abstract : The bilayer disc is a flat, lipid aggregate structure in the nanometre regime. It is composed of a bilayer of amphiphilic molecules with micelle-forming amphiphilic molecules supporting the rim, which prevent disc fusion and self-closure. READ MORE