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PRD-Containing Virulence Regulators (PCVRs) in Pathogenic Bacteria.

Joseph S Rom1, Meaghan T Hart1, Kevin S McIver1,2

  • 1Cell Biology & Molecular Genetics, University of Maryland, College Park, MD, United States.

Frontiers in Cellular and Infection Microbiology
|November 5, 2021
PubMed
Summary
This summary is machine-generated.

Bacterial virulence regulators (PCVRs) use the phosphoenolpyruvate phosphotransferase system (PTS) for sugar sensing and gene regulation. This review explores their widespread roles as transcription factors and potential chromatin-structuring proteins.

Keywords:
AtxAMafRMgaMgaSpnPCVRPTS phosphorylationnucleoid associated protein

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Area of Science:

  • Microbiology
  • Molecular Biology
  • Bacterial Pathogenesis

Background:

  • Bacterial pathogens utilize regulatory proteins to adapt to host environments.
  • The phosphoenolpyruvate phosphotransferase system (PTS) links sugar transport and phosphorylation, sensing carbohydrate availability.
  • PTS-regulatory-domain-containing virulence regulators (PCVRs) are a family of homologous proteins found in diverse bacterial pathogens.

Purpose of the Study:

  • To review known and putative PCVRs based on domain and functional characteristics.
  • To explore the widespread distribution and function of PCVRs in bacterial pathogens.
  • To investigate the potential dual role of PCVRs as transcription factors and chromatin-structuring proteins.

Main Methods:

  • Literature review of known and putative PCVRs.
  • Analysis of domain structures and functional characteristics.
  • Examination of phosphorylation mechanisms and DNA-binding interactions.

Main Results:

  • PCVRs, like Mga and AtxA, are phosphorylated (potentially via PTS), affecting dimerization and activity.
  • Some PCVRs interact with DNA similarly to nucleoid-associating proteins, while others function as dimeric transcription factors.
  • High-resolution structures confirm PCVR domain organization, prompting further questions about their ubiquity and signaling pathways.

Conclusions:

  • PCVRs represent a conserved regulatory mechanism in bacterial pathogens.
  • Further research is needed to elucidate the full scope of PCVR functions, including sugar-specific signaling and their roles in DNA organization.
  • Understanding PCVRs is crucial for developing novel strategies against bacterial infections.