Search for dissertations about: "binding modes"

Showing result 21 - 25 of 89 swedish dissertations containing the words binding modes.

  2. 21. Structure and lipid interactions of membrane-associated glycosyltransferases : Cationic patches and anionic lipids regulate biomembrane binding of both GT-A and GT-B enzymes

    Author : Scarlett Szpryngiel; Lena Mäler; Marcelo Guerins; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; glycosyltransferase; monotopic membrane proteins; galactolipids; NMR; chitin synthase; DGD2; LPS; WaaG; MIT domain; Biophysics; biofysik;

    Abstract : This thesis concerns work on structure and membrane interactions of enzymes involved in lipid synthesis, biomembrane and cell wall regulation and cell defense processes. These proteins, known as glycosyltransferases (GTs), are involved in the transfer of sugar moieties from nucleotide sugars to lipids or chitin polymers. READ MORE

  4. 22. Computational Studies of Nitrogenase

    Author : Lili Cao; Beräkningskemi; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; nitrogenase; QM MM; quantum refinement; FeMo cluster; E4 state; N2 binding; V-nitrogenase; P-cluster; S2B dissociation; broken-symmetry state; homocitrate; DFT; protonation state; disorder; ComQumX-2QM;

    Abstract : AbstractNitrogenase is the only enzyme that can convert the inert nitrogen molecule to ammonia, so that it can be used for biomass production and in biosynthetic pathways. It contains a complicated acitve site, composed of eight metal ions, nine sulfur ions and one carbide ion (the FeMo cluster). READ MORE

  5. 23. Multifaceted adhesion properties of Helicobacter pylori in promotion of gastric disease

    Author : Jenny Nordén; Umeå universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES;

    Abstract : Helicobacter pylori is a Gram-negative spiral-shaped bacteria that resides in the gastric mucosa and adheres to the epithelial lining of the human stomach. H. pylori adhesion mediates inflammation of the epithelium, which can lead to more severe diseases such as chronic active gastritis and gastric carcinoma. READ MORE

  6. 24. Adaptation of Helicobacter pylori Adherence Properties in Promotion of Host Tropism and Inflammatory Disease

    Author : Marina Aspholm; Rino Rappuoli; Umeå universitet; []
    Keywords : H. pylori; BabA; SabA; adhesin; blood group antigens; sialylated; phase variation; hemagglutination; selectin; adaptation; odontologi; Odontology;

    Abstract : Being among the most prevalent of persistent infectious agents in humans worldwide, Helicobacter pylori induces chronic inflammation (gastritis), which may progress to peptic ulceration and stomach cancer. The ability to adhere to the gastric mucosa is considered to be both a colonization and virulence property of H. pylori. For adherence, H. READ MORE

  7. 25. Computational Studies of Protein-ligand Systems Using Enhanced Sampling Methods

    Author : Rongfeng Zou; Yaoquan Tu; Leif Eriksson; KTH; []
    Keywords : molecular dynamics; enhanced sampling; protein-ligand interactions; umbrella sampling; metadynamics; Teoretisk kemi och biologi; Theoretical Chemistry and Biology;

    Abstract : This thesis focuses on studies of protein-ligand systems using enhanced sampling methods. In chapter I, I give a brief introduction to the time-scale problem and some enhanced sampling methods. In chapter II, the basics of MD simulation are reviewed. READ MORE