Fluctuations in spo0A Transcription Control Rare Developmental Transitions in Bacillus subtilis
Author Information
Author(s): Mirouze Nicolas, Prepiak Peter, Dubnau David
Primary Institution: Public Health Research Center, New Jersey Medical School, Newark, New Jersey, United States of America
Hypothesis
The study investigates how fluctuations in the transcription of the spo0A gene affect developmental transitions in Bacillus subtilis.
Conclusion
The bursts in spo0A transcription during growth pauses increase the likelihood of cells transitioning to developmental pathways such as competence.
Supporting Evidence
- The transcription rate of spo0A exhibits bursts that correlate with growth rate pauses.
- These transcriptional bursts are independent of known regulators of spo0A.
- Increased spo0A transcription is linked to the production of phosphorylated Spo0A.
- Competence marker expression supports the hypothesis that transcription bursts increase transition probabilities.
Takeaway
When Bacillus subtilis slows down its growth, it starts making more of a special protein called Spo0A, which helps some cells change into a different state, like being able to take up DNA from their surroundings.
Methodology
The researchers monitored spo0A transcription using firefly luciferase as a real-time reporter during growth in sporulation medium.
Digital Object Identifier (DOI)
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