Global ETD Search
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Showing 1 to 8 of 8 for “"Position Effect Variegation"”.
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The genetic and molecular analysis of the mfs(2)31 locus in Drosophila melanogaster : a novel suppressor of position-effect variegation
Position-effect variegation (PEV) is the variable inactivation of a euchromatic gene which has been moved, by way of a chromosomal rearrangement, into a heterochromatic environment. The transcriptional repression at the variegating locus is thought to be a consequence of inappropriate packaging of …
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Derepression of heterochromatin inactivation by induction of a nearby promoter in Drosophila melanogaster
Position-effect variegation (PEV) describes the compaction of a euchromatic gene placed next to a region of heterochromatin. This compaction into heterochromatin in some instances results in a mosaic phenotype in Drosophila melanogaster. Since its discovery in the 1930's the phenomenon of PEV has …
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Transcriptional targeting of lentiviral vectors to the erythroblastic progeny of hematopoietic stem cells
… HIV-derived lentiviral vectors are very effective in transducing rare, non-dividing stem cell populations without altering their long-term repopulation and differentiation capacity. We developed a strategy for transcriptional targeting' of lentiviral vectors based on replacing the viral …
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The Mechanism Of Regulation Of Autosomal Heterochromatic Genes In drosophila Melanogaster Males By rox Rna And Msl Proteins
… Reduction of <i>roX</i> function suppresses position effect variegation (PEV), revealing functional alteration in heterochromatin. The effects of <i>roX</i> mutations on heterochromatic gene expression and PEV are limited to males. We proposed that <i>roX</i> and some MSL proteins have an …
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Silencing Through Heterochromatin Formation: The Role of Piwi in Transposon Targeting
… variegating pigmentation in the eyes, i.e. Position Effect Variegation: PEV). The PEV phenotype is known to be quite variable, and I have found that much of the variation has a genetic basis: Chap. 2). Using PEV reporter lines I have investigated a subtype of heterochromatin, the telomeric …
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The role of Ultrabithorax negative autoregulation in Drosophila melanogaster
… of heterochromatin and ii) the expression of Position Effect Variegation reporters also changes when outcrossed to certain wild populations of D. melanogaster. Together, these results suggest that there are considerable fluctuations in the transcriptional landscape between different …
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Molekulare Analyse der differentiellen Funktionen von Linkerhiston Isoformen bei Caenorhabditis elegans.
… beschrieben wurde, wurden auch in dem Telomer-Positionseffekt-Variegation-System der Hefen getestet. Es wurde herausgefunden, dass sie in diesem System funktionieren. Daraus kann man schließen, dass bestimmte molekulare Mechanismen zwischen den Hefen und C. elegans übereinstimmen.Im Rahmen …