What question did this study set out to answer?

To determine the mechanism coupling early sporulation gene expression to DNA synthesis in developing Bacillus subtilis cells.

September 15, 1992Proceedings of the National Academy of SciencesOpen Access

Coupling between gene expression and DNA synthesis early during development in Bacillus subtilis.

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Authors

KIKeith IretonUniversity of Otago AGA D GrossmanMassachusetts Institute of Technology

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Implication

Experimental study demonstrates coupling of early gene expression to DNA synthesis via the Spo0A phosphorelay in Bacillus subtilis, indicating a checkpoint against premature development.

Key Points

To determine the mechanism coupling early sporulation gene expression to DNA synthesis in developing Bacillus subtilis cells.
Inhibited DNA synthesis at the initiation of sporulation in Bacillus subtilis cultures.
Assayed the transcription of early sporulation genes dependent on the transcription factor Spo0A.
Evaluated the effect of DNA synthesis inhibition in mutant strains bearing altered-function spo0A alleles that bypass the regulatory phospho-relay.
Inhibition of DNA synthesis selectively blocked the activation of early sporulation genes that depend on the transcription factor Spo0A.
Mutations in spo0A bypassing the upstream multicomponent phospho-relay restored early sporulation gene expression despite DNA synthesis arrest.
Arrest of DNA replication prevents Spo0A activation specifically by inhibiting a component within the phosphorylation relay cascade.

Cite This Study

Ireton et al. (1992) studied this question.

synapsesocial.com/papers/6a6f4664a2d7cf2e39c28ac4 https://doi.org/10.1073/pnas.89.18.8808

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Implication

Experimental study demonstrates coupling of early gene expression to DNA synthesis via the Spo0A phosphorelay in Bacillus subtilis, indicating a checkpoint against premature development.

Coupling between gene expression and DNA synthesis early during development in Bacillus subtilis.

Discussion

Member takes

Implication

Key Points

Cite This Study

Coupling between gene expression and DNA synthesis early during development in Bacillus subtilis.

Discussion

Member takes

Implication

Key Points

Cite This Study

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