Sökning: "Biophysics"

Visar resultat 26 - 30 av 353 avhandlingar innehållade ordet Biophysics.

  1. 26. Membrane interactions of glycosyltransferases

    Författare :Jobst Liebau; Lena Mäler; Christofer Lendel; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Lipid; bicelle; glycosyltransferase; NMR; Biophysics; biofysik;

    Sammanfattning : Many important biological processes occur near or in membranes. The role of membranes is not merely confined to compartmentalization, they also form the matrix for membrane associated proteins and are of functional importance. Membrane associated proteins on the other hand require specific membrane properties for proper function. LÄS MER

  3. 27. Taming the Griffin : Membrane interactions of peripheral and monotopic glycosyltransferases and dynamics of bacterial and plant lipids in bicelles

    Författare :Jobst Liebau; Lena Mäler; Charles Sanders; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; membrane; bicelle; lipid; detergent; lipopolysaccharide; glycosyltransferase; WaaG; fluorescence; circular dichroism; NMR; paramagnetic relaxation enhancement; model-free approach; dynamics; Biophysics; biofysik;

    Sammanfattning : Biological membranes form a protective barrier around cells and cellular compartments. A broad range of biochemical processes occur in or at membranes demonstrating that they are not only of structural but also of functional importance. One important class of membrane proteins are membrane-associated glycosyltransferases. LÄS MER

  4. 28. The interaction between iron and the protein radical in aerobic and anaerobic ribonucleotide reductases

    Författare :Aimin Liu; Edward Solomon; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Biophysics; biofysik;

    Sammanfattning : .... LÄS MER

  5. 29. Combining low resolution, high resolution, functional, and simulation techniques : In the study of pentameric ligand-gated ion channels

    Författare :Marie Lycksell; Erik Lindahl; Kresten Lindorff-Larsen; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Neutrons; Small-angle scattering; Cryo-EM; Simulations; Ion channels; Biophysics; biofysik;

    Sammanfattning : Combining methods yielding different information is a powerful approach for understanding structural biology in general, and in particular systems such as pentameric ligand-gated ion channels (pLGICs). Pentameric ligand-gated ion channels are membrane proteins that sense chemical signals, which they convert to changes in membrane potential. LÄS MER

  7. 30. Biophysical studies of peptides with functions in biotechnology and biology

    Författare :Fatemeh Madani; Astrid Gräslund; Steven F. Dowdy; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Genetic fluorescence label; Biarsenical tetracysteine motif; Cell-penetrating peptides; Large unilamellar vesicles; Pyrenebutyrate; Endosomal escape; Membrane perturbation; Bacteriorhodopsin; Dynorphin; Biophysics; biofysik;

    Sammanfattning : My thesis concerns spectroscopic studies (NMR, CD and fluorescence) of peptides with functions in biotechnology and biology, and their interactions with a model membrane (large unilamellar phospholipid vesicles).The resorufin-based arsenical hairpin binder (ReAsH) bound to a short peptide is a useful fluorescent tag for genetic labeling of proteins in living cells. LÄS MER