Search for dissertations about: "Transcriptional silencing"

Showing result 1 - 5 of 76 swedish dissertations containing the words Transcriptional silencing.

  1. 1. Mating type switching and transcriptional silencing in Kluyveromyces lactis

    Author : Emad Barsoum; Åström Stefan; Laura Rusche; Stockholms universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Mating type switch; transcriptional silencing; alpha3; transposase; Ume6; Mts1; Ras; cAMP; K. lactis; Developmental biology; Utvecklingsbiologi; utvecklingsbiologi; Developmental Biology;

    Abstract : To explore the similarities and differences of regulatory circuits among budding yeasts, we characterized the role of unscheduled meiotic gene expression 6 (UME6) and a novel mating type switching pathway in Kluyveromyces lactis. We found that Ume6 was required for transcriptional silencing of the cryptic mating-type loci HMLα and HMRa. READ MORE

  2. 2. Silencing and DNA double-strand break repair in budding yeast

    Author : Andreas Kegel; Stefan Åström; Stephan Marcand; Stockholms universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Silencing; Reb1; DSB; NHEJ; Nej1; illegitimate recombination; yeast; Developmental biology; Utvecklingsbiologi;

    Abstract : Transcriptional silencing that makes large chromosomal domains inaccessible for the transcriptional apparatus is nucleated at DNA elements called silencers. In K.lactis a 102bp HMLα silencer was defined revealing three distinct protein-binding regions (A, B, and C) that were required for silencing of HMLα. READ MORE

  3. 3. Mechanistic characterization of post-transcriptional gene silencing

    Author : Cecilia Dahlgren; Karolinska Institutet; Karolinska Institutet; []
    Keywords : ;

    Abstract : With the ongoing task of identifying and characterizing genes in the human genome, there is a great demand for tools to study these genes. Today, reverse genetics is the most effective way to explore gene function. This involves suppression of the gene of interest by a set of manipulation techniques. READ MORE

  4. 4. On aging and the role of Ubp3 in heterochromatic gene silencing and protein quality control

    Author : David Öling; Göteborgs universitet; Göteborgs universitet; Gothenburg University; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Aging; Protein damage; Segregation; Transcriptional silencing; rDNA; UBP3; SIR2; Protein aggregates;

    Abstract : Aging is characterized by a build-up of damage in organisms ranging from protists to multi-cellular species. This damage adversely affects core components such as DNA and proteins which are necessary to sustain life. READ MORE

  5. 5. Molecular Insights into Kcnq1ot1 Noncoding Antisense RNA Mediated Long Range Transcriptional Gene Silencing

    Author : Radha Raman Pandey; Chandrasekhar Kanduri; Karl Ekwall; Uppsala universitet; []
    Keywords : MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; epigenetics; gene silencing; noncoding RNA; genomic imprinting; Kcnq1ot1; Medical genetics; Medicinsk genetik;

    Abstract : Non-coding antisense RNAs have been implicated in the epigenetic silencing of individual gene as well as chromosomal domains. While silencing of the overlapping gene by antisense RNAs has been well investigated, their functional role in silencing of chromosomal domains remains enigmatic. READ MORE