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Volume 10, Issue 3

The influence of flocculation upon global gene transcription in a yeast mutant Open Access

Abstract

The transcriptome from a deletion mutant was one of the first comprehensive yeast transcriptomes published. Subsequent transcriptomes from and mutants firmly established the Tup1-Cyc8 complex as predominantly acting as a repressor of gene transcription. However, transcriptomes from gene deletion or conditional mutants would all have been influenced by the striking flocculation phenotypes that these mutants display. In this study, we have separated the impact of flocculation from the transcriptome in a conditional mutant to reveal those genes (i) subject solely to Cyc8p-dependent regulation, (ii) regulated by flocculation only and (iii) regulated by Cyc8p and further influenced by flocculation. We reveal a more accurate list of Cyc8p-regulated genes that includes newly identified Cyc8p-regulated genes that were masked by the flocculation phenotype and excludes genes which were indirectly influenced by flocculation and not regulated by Cyc8p. Furthermore, we show evidence that flocculation exerts a complex and potentially dynamic influence upon global gene transcription. These data should be of interest to future studies into the mechanism of action of the Tup1-Cyc8 complex and to studies involved in understanding the development of flocculation and its impact upon cell function.

  • Received:
  • Accepted:
  • Published Online:
Keyword(s): co-repressor , FLO1 , flocculation , Saccharomyces cerevisiae , transcription and Tup1-Cyc8
Funding
This study was supported by the:
  • Trinity College Dublin (Award 1252 Award)
    • Principle Award Recipient: BrendaLee
  • King Abdulaziz University (Award 312)
    • Principle Award Recipient: AlastairBruce Fleming
  • King Abdulaziz University (Award 312)
    • Principle Award Recipient: AtifA. Bamagoos
  • Microbiology Society (Award GA003520)
    • Principle Award Recipient: BrendaLee
© 2024 The Authors
  • This is an open-access article distributed under the terms of the Creative Commons Attribution License. This article was made open access via a Publish and Read agreement between the Microbiology Society and the corresponding author’s institution.
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2024-03-26
2024-04-27
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The influence of flocculation upon global gene transcription in a yeast CYC8 mutant
M Gen 10, 001216 (2024); https://doi.org/10.1099/mgen.0.001216
/content/journal/mgen/10.1099/mgen.0.001216
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