Global analysis of the relationship between the binding of the Bas1p transcription factor and meiosis-specific double-strand DNA breaks in Saccharomyces cerevisiae.

Published

Journal Article

In the yeast Saccharomyces cerevisiae, certain genomic regions have very high levels of meiotic recombination (hot spots). The hot spot activity associated with the HIS4 gene requires the Bas1p transcription factor. To determine whether this relationship between transcription factor binding and hot spot activity is general, we used DNA microarrays to map all genomic Bas1p binding sites and to map the frequency of meiosis-specific double-strand DNA breaks (as an estimate of the recombination activity) of all genes in both wild-type and bas1 strains. We identified sites of Bas1p-DNA interactions upstream of 71 genes, many of which are involved in histidine and purine biosynthesis. Our analysis of recombination activity in wild-type and bas1 strains showed that the recombination activities of some genes with Bas1p binding sites were dependent on Bas1p (as observed for HIS4), whereas the activities of other genes with Bas1p binding sites were unaffected or were repressed by Bas1p. These data demonstrate that the effect of transcription factors on meiotic recombination activity is strongly context dependent. In wild-type and bas1 strains, meiotic recombination was strongly suppressed in large (25- to 150-kb) chromosomal regions near the telomeres and centromeres and in the region flanking the rRNA genes. These results argue that both local and regional factors affect the level of meiotic recombination.

Full Text

Duke Authors

Cited Authors

  • Mieczkowski, PA; Dominska, M; Buck, MJ; Gerton, JL; Lieb, JD; Petes, TD

Published Date

  • February 2006

Published In

Volume / Issue

  • 26 / 3

Start / End Page

  • 1014 - 1027

PubMed ID

  • 16428454

Pubmed Central ID

  • 16428454

Electronic International Standard Serial Number (EISSN)

  • 1098-5549

International Standard Serial Number (ISSN)

  • 0270-7306

Digital Object Identifier (DOI)

  • 10.1128/MCB.26.3.1014-1027.2006

Language

  • eng