How a Gene Affects Yeast Evolution and Function
Author Information
Author(s): Hsu Po-Chen, Lu Tzu-Chiao, Hung Po-Hsiang, Leu Jun-Yi
Primary Institution: Academia Sinica
Hypothesis
Is complete disruptive rewiring necessary for a transcription factor's functional switch?
Conclusion
The study shows that the Sef1 transcription factor can switch functions before complete rewiring occurs, influenced by the moonlighting function of its target gene NDE1.
Supporting Evidence
- The study defines 'disruptive rewiring' as a process that alters the connections between a transcription factor and its target genes.
- Sef1 can promote and inhibit respiratory growth in yeast by modulating the function of NDE1 without changing its overall association with TCA cycle genes.
- Phenotypic masking by NDE1 can constrain the evolutionary trajectories of the Sef1 regulatory network.
Takeaway
Scientists studied how a gene called Sef1 helps yeast adapt and evolve. They found that it can change its role without fully changing its connections to other genes.
Methodology
The study used chromatin immunoprecipitation sequencing, RNA expression analysis, and phenotypic assays across different yeast species.
Limitations
The study could not address the driving forces behind the evolutionary divergence of the Sef1 regulatory networks due to a lack of appropriate ancestral strains.
Statistical Information
P-Value
p<0.0001
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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