Monitoring the DNA topoisomerase II checkpoint in Saccharomyces cerevisiae

Katherine Furniss, Amit C.J. Vas, Andrew B. Lane, Duncan J. Clarke

Research output: Chapter in Book/Report/Conference proceedingChapter


Topoisomerase II activity is crucial to maintain genome stability through the removal of catenanes in the DNA formed during DNA replication and scaffolding the mitotic chromosome. Perturbed Topo II activity causes defects in chromosome segregation due to persistent catenations and aberrant DNA condensation during mitosis. Recently, novel top2 alleles in the yeast Saccharomyces cerevisiae revealed a checkpoint control which responds to perturbed Topo II activity. Described in this chapter are protocols for assaying the phenotypes seen in top2 mutants on a cell biological basis in live cells: activation of the Topo II checkpoint using spindle morphology, chromosome condensation using fluorescently labeled chromosomal loci and cell cycle progression by flow cytometry. Further characterization of this novel checkpoint is warranted so that we can further our understanding of the cell cycle, genomic stability, and the possibility of identifying novel drug targets.

Original languageEnglish (US)
Title of host publicationMethods in Molecular Biology
PublisherHumana Press Inc.
Number of pages24
StatePublished - 2018

Publication series

NameMethods in Molecular Biology
ISSN (Print)1064-3745

Bibliographical note

Publisher Copyright:
© 2018, Springer Science+Business Media, LLC.


  • Anaphase
  • Budding yeast
  • Chromosome condensation
  • Spindle elongation
  • Topoisomerase II checkpoint


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