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The evolution of retrotransposon regulatory regions and its consequences on the Drosophila melanogaster and Homo sapiens host genomes

Abstract : It has now been established that transposable elements (TEs) make up a variable, but significant proportion of the genomes of all organisms, from Bacteria to Vertebrates. However, in addition to their quantitative importance, there is increasing evidence that TEs also play a functional role within the genome. In particular, TE regulatory regions can be viewed as a large pool of potential promoter sequences for host genes. Studying the evolution of regulatory region of TEs in different genomic contexts is therefore a fundamental aspect of understanding how a genome works. In this paper, we first briefly describe what is currently known about the regulation of TE copy number and activity in genomes, and then focus on TE regulatory regions and their evolution. We restrict ourselves to retrotransposons, which are the most abundant class of eukaryotic TEs, and analyze their evolution and the subsequent consequences for host genomes. Particular attention is paid to much-studied representatives of the Vertebrates and Invertebrates, Homo sapiens and Drosophila melanogaster, respectively, for which high quality sequenced genomes are available.
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Submitted on : Sunday, May 31, 2020 - 7:24:37 AM
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Marie Fablet, Rita Rebollo, Christian Biémont, Cristina Vieira. The evolution of retrotransposon regulatory regions and its consequences on the Drosophila melanogaster and Homo sapiens host genomes. Gene, Elsevier, 2007, 390 (1-2), pp.84-91. ⟨10.1016/j.gene.2006.08.005⟩. ⟨hal-02665818⟩

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