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Visar resultat 1 - 5 av 455 avhandlingar som matchar ovanstående sökkriterier.

  1. 1. DNA precursor biosynthesis-allosteric regulation and medical applications

    Författare :Reza Rofougaran; Anders Hofer; Thomas Borén; Staffan Eriksson; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Biochemistry; DNA biosynthesis; ribonucleotide reductase; allosteric regulation; Trypanosoma brucei; adenosine kinase; nucleoside analogs; mitochondrial DNA; TWINKLE; Biokemi; medicinsk biokemi; Medical Biochemistry;

    Sammanfattning : Ribonucleotide reductase (RNR) is a key enzyme for de novo dNTP biosynthesis. We have studied nucleotide-dependent oligomerization of the allosterically regulated mammalian RNR using a mass spectrometry–related technique called Gas-phase Electrophoretic Mobility Macromolecule Analysis (GEMMA). LÄS MER

  3. 2. The Role of Microvascular Pericytes in the Generation of Pro-fibrotic Connective Tissue Cells : Investigations in vitro and in Reactive Tissues in vivo

    Författare :Jakob Karén; Christian Sundberg; Gunilla Westergren-Thorsson; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; pericyte fibroblast differentiation fibrosis; Biochemistry; Biokemi; Microbiology; Mikrobiologi; Cell biology; Cellbiologi; Medical Biochemistry; Medicinsk biokemi; Cellforskning; Cell Research; Mikrobiologi; Microbiology;

    Sammanfattning : Pericytes are cells of mesenchymal origin located on the abluminal side, juxtapositioned to the endothelial cells in capillaries, venules and small arterioles. They are important for maintaining vessel integrity in resting tissues as well as the formation and stabilization of new vessels. LÄS MER

  4. 3. Lipoproteomics : Environmental and Genetic Factors Affecting High-Density Lipoprotein (HDL)

    Författare :Stefan Ljunggren; Mats Lindahl; Gun Wingren; Helen Karlsson; Jan Albert Kuivenhoven; Björn Dahlbäck; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES;

    Sammanfattning : Lipoprotein particles act as lipid transporters in the blood stream, and measuring cholesterol content in specific subclasses of lipoprotein particles has long been, and still is, a frequently used tool to estimate the risk of cardiovascular disease (CVD). High-density lipoprotein (HDL) is a subclass of lipoproteins often regarded as providing protection against CVD via several functions including reverse cholesterol transport and anti-inflammatory capacities. LÄS MER

  5. 4. Studies of Functional Interactions within Yeast Mediator and a Proposed Novel Mechanism for Regulation of Gene Expression

    Författare :Magnus Hallberg; Stefan Björklund; Karl Ekwall; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Biochemistry; Mediator; Transcriptional regulation; Srb10; Cdk8; Med2; Srb7; Med21; RNA pol II; Biokemi; Biochemistry; Biokemi; medicinsk biokemi; Medical Biochemistry;

    Sammanfattning : The yeast Mediator complex is required for transcriptional regulation both in vivo and in vitro and the identification of similar complexes from metazoans indicates that its function is conserved through evolution. Mediator subunit composition and structure is well characterized both by biochemical, genetic and biophysical methods. LÄS MER

  7. 5. Size determination of hyaluronan and multivariate analysis of amyloid prone proteins

    Författare :Linus Malm; Göran Larsson; Henrik Antti; Mary Cowman; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Hyaluronan; Dynamic Light Scattering; GEMMA; Amyloid Aggregation; Multivariate Analysis; Biochemistry; Biokemi; medicinsk biokemi; Medical Biochemistry; fysikalisk kemi; Physical Chemistry;

    Sammanfattning : Background.The extracellular matrix surrounds all cells within our bodies. The glycosaminoglycan hyaluronan is a major component in the extracellular matrix. Despite its structural simplicity it has been shown to be involved in several important functions. LÄS MER