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February 21, 2026Journal of BacteriologyOpen Access

A novel AAA+ ATPase required for sporulation and stress response in Bacillus anthracis

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Authors

NSNitika SangwanABAnkur BothraAPAndrei P. Pomerantsev

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Overview

Findings demonstrate that BA PrkA is crucial for spore development and resilience against osmotic stress in Bacillus anthracis, linking sporulation and stress responses.

Key Points

  • This research aims to characterize the role of BA PrkA, a novel AAA+ ATPase, in sporulation and stress responses in Bacillus anthracis.
  • Identified BA PrkA protein through sequencing and homology analysis with Bacillus subtilis PrkA.
  • Conducted expression experiments to assess protein timing during sporulation stages II to VI.
  • Developed and analyzed a null mutant lacking BA PrkA to evaluate sporulation and stress response.
  • Performed interactome analysis to identify potential protein partners involved in stress response and sporulation.
  • BA PrkA is essential for sporulation, with null mutants showing severe defects and reduced spore viability.
  • Null mutants display compromised growth under ionic-osmotic stress, indicating stress sensitivity.
  • BA prkA is significantly induced in wild-type B. anthracis under osmotic stress conditions.
  • Interaction analyses identified ProA and EzrA as proteins involved in osmotic stress and sporulation processes.

Cite This Study

Sangwan et al. (2026) studied this question.

synapsesocial.com/papers/69994c80873532290d0210eehttps://doi.org/10.1128/jb.00518-25
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