Search for dissertations about: "Molekylärbiologi"

Showing result 21 - 25 of 2421 swedish dissertations containing the word Molekylärbiologi.

  2. 21. 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

  4. 22. Studies of metazoan proteasome function and regulation

    Author : Josefin Lundgren; Patrick Young; Michael Glickman; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; proteasome ubiquitin RNAi microarray; Molecular biology; Molekylärbiologi; molekylärbiologi; Molecular Biology;

    Abstract : Biological processes depend upon the structural and functional quality of the molecules that comprise living organisms. The integrity of molecules such as DNA, RNA, proteins, carbohydrates and lipids is crucial and the precise three-dimensional shape and the detailed chemistry of these molecules orchestrate the biochemical processes vital for life. READ MORE

  5. 23. The evolution of ribonucleotide reductases

    Author : Daniel Lundin; Anthony Poole; Britt-Marie Sjöberg; Christos Ouzounis; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Evolution; ribonucleotide reductase; horizontal gene transfer; phylogeny; protein classification; Molecular biology; Molekylärbiologi; Molecular Biology; molekylärbiologi;

    Abstract : Ribonucleotide reductase (RNR) catalyses the transformation of RNA building blocks, ribonucleotides, to DNA building blocks, deoxyribonucleotides. This is the only extant reaction pathway for de novo synthesis of DNA building blocks and the enzyme is thus necessary for life. RNR is found in all but a few organisms. READ MORE

  6. 24. The evolution of the nuclear envelope

    Author : Nadja Neumann; Anthony Poole; Gáspár Jékely; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Nuclear pore complex; bouquet; meiosis; nucleus; eukaryote evolution; nucleoporin; tree of life; stem group; recombination; Molecular biology; Molekylärbiologi; Molecular Biology; molekylärbiologi;

    Abstract : The nucleus is one of the defining features of eukaryotes and the question of its origin is intimately linked to the evolution of the eukaryotic cell. It is delimited by a double lipid bilayer called the nuclear envelope, which separates the nuclear interior from the cytoplasm. READ MORE

  7. 25. Homing Endonucleases and Horizontal Gene Transfer in Bacteria and Bacteriophages

    Author : David Nord; Britt-Marie Sjöberg; Steinar Johansen; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; dsDNA cleavage; ribonucleotide reductase; GIY-YIG motif; Molecular biology; Molekylärbiologi; molekylärbiologi; Molecular Biology;

    Abstract : Homing endonuclease genes (HEGs) are selfish genetic elements that mediate their own super-Mendelian inheritance. This is mediated by the homing endonuclease cleavage of a HEG- allele followed by recombination-repair with a HEG+ allele.The majority of the HEGs are encoded in intervening sequences (IVSs). READ MORE