Condensin depletion causes genome decompaction without altering the level of global gene expression in Saccharomyces cerevisiae

Matthew Robert Paul, Tovah Elise Markowitz, Andreas Hochwagen, Sevinç Ercan

Research output: Contribution to journalArticle

Abstract

Condensins are broadly conserved chromosome organizers that function in chromatin compaction and transcriptional regulation, but to what extent these two functions are linked has remained unclear. Here, we analyzed the effect of condensin inactivation on genome compaction and global gene expression in the yeast Saccharomyces cerevisiae by performing spike-in-controlled genome-wide chromosome conformation capture (3C-seq) and mRNA-sequencing analysis. 3C-seq analysis shows that acute condensin inactivation leads to a global decrease in close-range intrachromosomal interactions as well as more specific losses of interchromosomal tRNA gene clustering. In addition, a condensin-rich interaction domain between the ribosomal DNA and the centromere on chromosome XII is lost upon condensin inactivation. Unexpectedly, these large-scale changes in chromosome architecture are not associated with global changes in mRNA levels. Our data suggest that the global transcriptional program of proliferating S. cerevisiae is resistant to condensin inactivation and the associated profound changes in genome organization.

Original languageEnglish (US)
Pages (from-to)331-344
Number of pages14
JournalGenetics
Volume210
Issue number1
DOIs
StatePublished - Sep 2018

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Keywords

  • Budding yeast
  • Chromosome interactions
  • Condensin
  • Gene expression
  • Genome organization
  • TADs

ASJC Scopus subject areas

  • Genetics

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