Cell cycle Start is coupled to entry into the yeast metabolic cycle across diverse strains and growth rates.

Published

Journal Article

Cells have evolved oscillators with different frequencies to coordinate periodic processes. Here we studied the interaction of two oscillators, the cell division cycle (CDC) and the yeast metabolic cycle (YMC), in budding yeast. Previous work suggested that the CDC and YMC interact to separate high oxygen consumption (HOC) from DNA replication to prevent genetic damage. To test this hypothesis, we grew diverse strains in chemostat and measured DNA replication and oxygen consumption with high temporal resolution at different growth rates. Our data showed that HOC is not strictly separated from DNA replication; rather, cell cycle Start is coupled with the initiation of HOC and catabolism of storage carbohydrates. The logic of this YMC-CDC coupling may be to ensure that DNA replication and cell division occur only when sufficient cellular energy reserves have accumulated. Our results also uncovered a quantitative relationship between CDC period and YMC period across different strains. More generally, our approach shows how studies in genetically diverse strains efficiently identify robust phenotypes and steer the experimentalist away from strain-specific idiosyncrasies.

Full Text

Cited Authors

  • Burnetti, AJ; Aydin, M; Buchler, NE

Published Date

  • January 2016

Published In

Volume / Issue

  • 27 / 1

Start / End Page

  • 64 - 74

PubMed ID

  • 26538026

Pubmed Central ID

  • 26538026

Electronic International Standard Serial Number (EISSN)

  • 1939-4586

International Standard Serial Number (ISSN)

  • 1059-1524

Digital Object Identifier (DOI)

  • 10.1091/mbc.E15-07-0454

Language

  • eng