Search for dissertations about: "virulence genes"

Showing result 1 - 5 of 158 swedish dissertations containing the words virulence genes.

  2. 1. Twin-arginine translocation in Yersinia : the substrates and their role in virulence

    Author : Ummehan Avican; Åke Forsberg; Åsa Sjöling; Umeå universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Yersinia pseudotuberculosis; Tat; virulence; Tat substrates; SufI; stress response; metabolism; infection; transcriptome analysis; Infectious Diseases; infektionssjukdomar; molekylärbiologi; Molecular Biology; mikrobiologi; Microbiology;

    Abstract : Pathogenic Yersinia cause a manifold of diseases in humans ranging from mild gastroenteritis (Y. pseudotuberculosis and Y. enterocolitica) to pneumonic and bubonic plague (Y. READ MORE

  4. 2. Stress response and virulence in Vibrio anguillarum

    Author : Barbara Weber; Debra L. Milton; James D. Oliver; Umeå universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Vibrio anguillarum; quorum sensing; Type VI secretion; stress response; virulence; skin colonization; Molecular biology; Molekylärbiologi; molekylärbiologi; Molecular Biology;

    Abstract : Bacteria use quorum sensing, a cell to cell signaling mechanism mediated by small molecules that are produced by specific signal molecule synthases, to regulate gene expression in response to population density. In Vibrio anguillarum, the quorum-sensing phosphorelay channels information from three hybrid sensor kinases VanN, VanQ, CqsS that sense signal molecules produced by the synthases VanM, VanS and CqsA, onto the phosphotransferase VanU, to regulate activity of the response regulator VanO. READ MORE

  5. 3. Identification of new virulence factors in Francisella tularensis

    Author : Anna-Lena Forslund; Åke Forsberg; Elisabeth Carniel; Umeå universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Francisella tularensis; regulation; virulence; Hfq; DsbA; type IV pili; membrane; Molecular biology; Molekylärbiologi; molekylärbiologi; Molecular Biology;

    Abstract : Francisella tularensis, the causative agent of tularemia, is a highly virulent bacterium with an infection dose of less than ten bacteria. The ability of a pathogen to cause infection relies on different virulence mechanisms, but in Francisella tularensis relatively few virulence factors are known. Two F. READ MORE

  6. 4. RNA-mediated virulence gene regulation in the human pathogen Listeria monocytogenes

    Author : Edmund Loh; Jörgen Johansson; Nancy Freitag; Umeå universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Listeria monocytogenes; virulence; ncRNAs; PrfA; 5´-UTRs; Molecular biology; Molekylärbiologi; molekylärbiologi; Molecular Biology;

    Abstract : The Gram-positive human pathogen Listeria monocytogenes uses a wide range of virulence factors for its pathogenesis. The majority of its virulence genes are encoded on a 9-kb pathogenicity island and are controlled by the transcriptional activator PrfA. READ MORE

  7. 5. Genotypic and phenotypic characterization of Porphyromonas gingivalis in relation to virulence

    Author : Takashi Yoshino; Göteborgs universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Porphyromonas gingivalis; Phenotype; Genotype; Virulence; Periodontitis;

    Abstract : The present thesis was designed to increase the knowledge on the role of pathogenic potential of Porphyromonas gingivalis as a putative periodontal pathogen. P. READ MORE