Ty1 extrachromosomal circular copies in Saccharomyces cerevisiae

  • Ballario P
  • Filetici P
  • Junakovic N
 et al. 
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Abstract

The eukaryotic transposable element Ty1 is present in about 20-30 integrated copies per yeast aploid genome, variably localized in different strains. Here, we report the presence in yeast of circular extrachromosomal molecules homologous to Ty1, 6 kilobases in size (the same as integrated copies) present in about 1 circular copy/250-300 cells. This finding shows another analogy between eurkaryotic-transposable elements and the pro-viral integrative form of retroviruses. © 1983.

Author-supplied keywords

  • Circular extrachromosomal copy
  • Transposable element
  • Yeast

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