Sökning: "silencing"

Visar resultat 16 - 20 av 283 avhandlingar innehållade ordet silencing.

  1. 16. The type I-E CRISPR-Cas system : Biology and applications of an adaptive immune system in bacteria

    Författare :Lina Amlinger; Magnus Lundgren; Peter Fineran; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; CRISPR; CRISPR-Cas; virus defense; bacteria; bacteriophage; adaptation; spacer integration; interference; gene silencing; fluorescent reporter; Escherichia coli; Mikrobiologi; Microbiology;

    Sammanfattning : CRISPR-Cas systems are adaptive immune systems in bacteria and archaea, consisting of a clustered regularly interspaced short palindromic repeats (CRISPR) array and CRISPR associated (Cas) proteins. In this work, the type I-E CRISPR-Cas system of Escherichia coli was studied.CRISPR-Cas immunity is divided into three stages. LÄS MER

  3. 17. Development of Transgenic Potatoes to Attain Novel Starch Qualities

    Författare :Mariette Andersson; Tillämpad biokemi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Livsmedelsteknik; Food and drink technology; Biokemisk teknik; Biochemical technology; StGH; starch yield; RNAi; antisense; gene silencing; ahas; potato transformation; sbe2; sbe1; gbss; amylopectin; amylose; Starch; potato;

    Sammanfattning : Starch is a plant-derived polysaccharide with many uses in different food and non-food applications. In this thesis, the production of two novel potato starch qualities, amylopectin and high-amylose, and the modifications and the characteristics of the produced plants and starches are described. LÄS MER

  4. 18. Characterization of RNA polymerase II subunit Rpb7 in silencing and transcription

    Författare :Ingela Djupedal; Karl Ekwall; Anthony Wright; Olivier Voinnet; Södertörns högskola; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : The DNA in eukaryotes is arranged in fibres of chromatin. The chromatin may be more or less compacted and the degree of condensation of the chromatin affects the accessibility of the DNA. The accessibility of the DNA, in turn, affects transcription and gene regulation. LÄS MER

  5. 19. Transcriptional Silencing in the Imprinted Igf2-H19 Loci: The Mystique of Epigenetics

    Författare :Vasudeva Ginjala; Andreas Paldi; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Developmental biology; Imprinting; DNA methylation; IGF2-H19; CTCF; ZFPs; PARP; Utvecklingsbiologi; Developmental biology; Utvecklingsbiologi; Genetics; genetik;

    Sammanfattning : Genomic imprinting marks a subset of autosomal loci expressed in parent of origin-dependent monoallelic expression in a non-Mendelian fashion. To restore totipotency and to reset the imprint according to the sex of the individual, the mark must be erased during germline development. LÄS MER

  7. 20. Insights into biotic stress response in Arabidopsis thaliana : the roles of epigenetics and RNA silencing

    Författare :María Luz Annacondia López; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : Plants live in fluctuating environments that can lead to stressful conditions that threat their survival. To deal with these disturbances, plants have developed a fascinating genome plasticity that enables them to reprogram their gene expression and adapt to the new conditions. LÄS MER