Sökning: "Macromolecular physics"

Hittade 5 avhandlingar innehållade orden Macromolecular physics.

  1. 1. Thermodynamic Studies of Macromolecular Models

    Författare :Ola Sommelius; Beräkningsbiologi och biologisk fysik - Genomgår omorganisation; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; classical mechanics; Mathematical and general theoretical physics; termodynamik; klassisk mekanik; Matematisk och allmän teoretisk fysik; statistisk fysik; gravitation; kvantmekanik; relativitet; quantum mechanics; relativity; statistical physics; thermodynamics; Fysicumarkivet A:1997:Sommelius;

    Sammanfattning : The thermodynamic properties of single chain polyelectrolyte and protein models are studied using Monte Carlo simulations and (for the polyelectrolyte models) variational calculations and high- and low-temperature expansions. A variational method is used for minimizing Lennard-Jones energies and for estimating end-to-end distances for a rigid Coulomb chain at finite temperatures. LÄS MER

  2. 2. Assembling a toolkit for computational dissection of dense protein systems

    Författare :Daniel Nilsson; Beräkningsbiologi och biologisk fysik - Genomgår omorganisation; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; macromolecular crowding; liquid-liquid phase separation; Monte Carlo simulation; time-lagged independent component analysis; finite-size scaling; polymer field theory; protein force field; Fysicumarkivet A:2021:Nilsson;

    Sammanfattning : The cellular interior is a dense environment. Understanding how such an environment impacts the properties of proteins and other macromolecules, as well as how weak, non-specific interactions drive processes such as protein droplet formation through liquid-liquid phase separation, is a major challenge in biological physics. LÄS MER

  3. 3. Peptide folding and local unfolding of SOD1 in the presence of interacting macromolecular crowders - a Monte Carlo approach

    Författare :Anna Bille; Beräkningsbiologi och biologisk fysik - Genomgår omorganisation; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Monte Carlo simulations; protein folding; SOD1; crowding; Fysicumarkivet A:2016:Bille;

    Sammanfattning : A protein chain often folds into a functional, specific three dimensional structure. Failurein this process can in some cases lead to disease, e.g. the misfolding disease ALS. LÄS MER

  4. 4. From single-molecule sensing to extracellular vesicles in glioma cells under stress

    Författare :Virginia Claudio; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; proteome; single molecule sensing; nanoplasmonics; surface plasmon resonance; exosomes; glioblastoma; extracellular vesicles; cellular stress; lipid composition;

    Sammanfattning : This thesis describes the work I conducted in two different areas, namely biomolecular sensing and quantitative cell biology. The work in the former area was focused on the optimization of plasmonic metamaterials for sensing applications, and in the latter on the characterization of extracellular vesicles released by glioblastoma cells under stress conditions. LÄS MER

  5. 5. Dynamics of Biomembranes and Rheological Properties of Living Cells

    Författare :Peter Berntsen; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; cell mechanics; lipid dynamics; cell rheology; biomembranes; water dynamics; relaxations; phospholipids; glass transition;

    Sammanfattning : An ingenious assembly of biomolecules and water constitute what we call biological tissue. The presence of water in this assembly is fundamental for the physiological processes and can make the difference between life and death. LÄS MER