How Yeast Controls Gene Expression During Meiosis
Author Information
Author(s): Michael Klutstein, Zahava Siegfried, Ariel Gispan, Shlomit Farkash-Amar, Guy Zinman, Ziv Bar-Joseph, Giora Simchen, Itamar Simon
Primary Institution: The Hebrew University-Hadassah Medical School
Hypothesis
The competition between the transcription factors Ndt80 and Sum1 regulates the expression of middle-phase meiosis genes.
Conclusion
The study reveals that detailed genetic experiments are necessary to understand the interactions in transcriptional regulatory networks during meiosis.
Supporting Evidence
- Ndt80 is essential for entry into meiotic divisions.
- Sum1 represses the transcription of many middle phase genes during vegetative growth and early meiosis.
- The absence of Sum1 leads to defects in spore formation and germination.
Takeaway
Yeast uses two proteins, Ndt80 and Sum1, to control when certain genes are turned on and off during the process of making spores. If one of these proteins is missing, it can cause problems with spore formation.
Methodology
The study used ChIP-on-chip and expression profiling to analyze the transcriptional network and the roles of Ndt80 and Sum1 in meiosis.
Limitations
The study primarily focuses on specific yeast strains and may not generalize to all yeast or other organisms.
Digital Object Identifier (DOI)
Want to read the original?
Access the complete publication on the publisher's website