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Träfflista för sökning "WFRF:(Mauceli Evan) srt2:(2012);pers:(Grabherr Manfred G.)"

Sökning: WFRF:(Mauceli Evan) > (2012) > Grabherr Manfred G.

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1.
  • Baumann, Martina, et al. (författare)
  • Artificially designed promoters : understanding the role of spatial features and canonical binding sites in transcription
  • 2012
  • Ingår i: Bioengineered Bugs. - : Informa UK Limited. - 1949-1018 .- 1949-1026. ; 3:2, s. 120-123
  • Tidskriftsartikel (refereegranskat)abstract
    • The promoter is a key element in gene transcription and regulation. We previously reported that artificial sequences rich in the dinucleotide CpG are sufficient to drive expression in vitro in mammalian cell lines, without requiring canonical binding sites for transcription factor proteins. Here, we report that introducing a promoter organization that alternates in CpGs and regions rich in A and T further increases expression strength, as well as how insertion of specific binding sites makes such sequences respond to induced levels of the transcription factor NFκB. Our findings further contribute to the mechanistic understanding of promoters, as well as how these sequences might be shaped by evolutionary pressure in living organisms.
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2.
  • Jones, Felicity C., et al. (författare)
  • The genomic basis of adaptive evolution in threespine sticklebacks
  • 2012
  • Ingår i: Nature. - : Springer Science and Business Media LLC. - 0028-0836 .- 1476-4687. ; 484:7392, s. 55-61
  • Tidskriftsartikel (refereegranskat)abstract
    • Marine stickleback fish have colonized and adapted to thousands of streams and lakes formed since the last ice age, providing an exceptional opportunity to characterize genomic mechanisms underlying repeated ecological adaptation in nature. Here we develop a high-quality reference genome assembly for threespine sticklebacks. By sequencing the genomes of twenty additional individuals from a global set of marine and freshwater populations, we identify a genome-wide set of loci that are consistently associated with marine-freshwater divergence. Our results indicate that reuse of globally shared standing genetic variation, including chromosomal inversions, has an important role in repeated evolution of distinct marine and freshwater sticklebacks, and in the maintenance of divergent ecotypes during early stages of reproductive isolation. Both coding and regulatory changes occur in the set of loci underlying marine-freshwater evolution, but regulatory changes appear to predominate in this well known example of repeated adaptive evolution in nature.
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