Sökning: "Ion-Binding"

Visar resultat 1 - 5 av 18 avhandlingar innehållade ordet Ion-Binding.

  1. 1. Shaking the EF-Hand. Dynamics and Ion-Binding to Calmodulin and Calbindin D9k

    Författare :Anders Malmendal; Biofysikalisk kemi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; magnesium; line shape; ion binding; EF-hand; cooperativity; conformational exchange; chemical shift; calmodulin; calcium; calbindin D9k; allostery; backbone dynamics; NMR; relaxation; Physical chemistry; Fysikalisk kemi;

    Sammanfattning : The work described in this thesis represents a biophysical approach, mainly using nuclear magnetic resonance (NMR) spectroscopy, to investigate the impact of magnesium ions on the EF-hand calcium-binding proteins calmodulin and calbindin D9k, as well as the dynamics of these proteins at low calcium levels. The x-ray structure of magnesium-saturated calbindin D9k shows a magnesium ion in only one of the two ion binding sites. LÄS MER

  3. 2. Ions interacting with macromolecules : NMR studies in solution

    Författare :Yuan Fang; Istvan Furo; Monika Schönhoff; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; electrophoretic NMR; diffusion NMR; specific ion effects; Hofmeister; ion binding; Kemi; Chemistry;

    Sammanfattning : Specific ion effects, identified for more than hundred years, play an important role in a wide range of phenomena and applications. Several mechanisms such as direct ion interaction with molecules have been suggested to explain these effects, but quantitative experimental evidence remains scarce. LÄS MER

  4. 3. Phase separation, aggregation and gelation of a charged helixforming polysaccharide in aqueous salt solution

    Författare :Johan Borgström; Fysikalisk kemi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Physical chemistry; polysaccharide; physical gel; ion binding; carrageenan; liquid crystal; polymer; Fysikalisk kemi;

    Sammanfattning : The phase behaviour and gelation of the anionic polysaccharide kappa-carrageenan (KC) in different salt solutions was studied. The specific site binding of certain anions and certain cations to the KC helix was used as a means of controlling the interactions. LÄS MER

  5. 4. NMR studies of ion binding and molecular conformation in mixed surfactant solutions

    Författare :Mikael Jansson; Uppsala universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP;

    Sammanfattning : .... LÄS MER

  7. 5. A Fourier transform NMR self-diffusion study of micellization, inclusion, ion binding and stacking processes in aqueous solution

    Författare :Roger Rymdén; Uppsala universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP;

    Sammanfattning : .... LÄS MER