Sökning: "Molekylärbiologi"

Visar resultat 1 - 5 av 2419 avhandlingar innehållade ordet Molekylärbiologi.

  1. 1. Functional organisation of the cell nucleus in the fission yeast, Schizosaccharomyces pombe

    Författare :Jenny Alfredsson Timmins; Pernilla Bjerling; Wendy Bickmore; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; fission yeast; heterochromatin; subnuclear organisation; chromo domain proteins; boundary elements; transcriptional regulation; epigenetics; Molecular biology; Molekylärbiologi; Cell and molecular biology; Cell- och molekylärbiologi; Genetics; Genetik; Molecular Biology; molekylärbiologi; Genetics; genetik;

    Sammanfattning : In eukaryotes the genome adopts a non-random spatial organisation, which is important for gene regulation. However, very little is known about the driving forces behind nuclear organisation. LÄS MER

  3. 2. Structural aspects of binding and transport proteins : By Barnali Neel Chaudhuri

    Författare :Barnali Neel Chaudhuri; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Molecular biology; Molekylärbiologi; Molecular biology; Molekylärbiologi; molekylärbiologi; Molecular Biology;

    Sammanfattning : Binding and transport proteins are essential for the transport of nutrients, vitamins, hormones, pheromones, etc. to their target destinations. Lipid-binding proteins typically contain an internal cavity where the hydrophobic/amphipathic ligands bind. Transport proteins with binding clefts for water-soluble sugars have different architectures. LÄS MER

  4. 3. Ligand binding and enzyme catalysis studied by molecular dynamics simulations

    Författare :Tomas Hansson; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Molecular biology; molecular dynamics simulation; free energy; linear response; drug design; empirical valence bond; HIV protease; protein tyrosine phosphatase; Molekylärbiologi; Molecular biology; Molekylärbiologi; molekylärbiologi; Molecular Biology;

    Sammanfattning : Molecular dynamics simulations and free energy calculations can be applied to biomolecular systems to predict ligand binding affinities. Combined with hybrid quantum-classical potential energy surfaces, such computations can also be used to probe enzymatic catalysis mechanisms. LÄS MER

  5. 4. Determinants of peptidyl-tRNA drop-off from E. coli Ribosomes : Effects of antibiotics, mutations and translation factors

    Författare :Reza Karimi; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Molecular biology; Molekylärbiologi; Molecular biology; Molekylärbiologi; molekylärbiologi; Molecular Biology;

    Sammanfattning : During protein synthesis, some peptidyl-tRNA molecules dissociate from the ribosomes and become hydrolysed by peptidyl-tRNA hydrolase (Pth). Two different in vitro systems, poly(U) and natural mRNA programmed ribosomes, have been used in order to determine dissociation (drop-off) rates of deacylated- and peptidyl-tRNAs from different sites on ribosomes. LÄS MER

  7. 5. A structural study of ribokinase from Escherichia coli

    Författare :Jill A. Sigrell; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Molecular biology; ATP-binding; conformational changes; kinase; ribose; X-ray crystallography; Molekylärbiologi; Molecular biology; Molekylärbiologi; molekylärbiologi; Molecular Biology;

    Sammanfattning : Ribokinase phosphorylates the abundant sugar ribose, using ATP in the presence of magnesium. The phosphorylation is the first reaction in ribose metabolism and the product, ribose-5-phosphate, can enter the pentose phosphate pathway and glycolysis. It can also be used in the synthesis of histidine and purines. LÄS MER