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Structural and Kinetic Variability of Pathogen Cyclophilins: Functional Diversification and Therapeutic Potential.

Filippo Favretto1, Eva Jiménez-Faraco2, Silvia Fruncillo1

  • 1Department of Biotechnology, University of Verona, Strada Le Grazie 15, Verona 37134, Italy.

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Pathogen cyclophilins, crucial enzymes in microbial virulence, exhibit structural and kinetic diversity distinct from human counterparts. Understanding these differences is key to developing novel antimicrobial therapies targeting these essential proteins.

Keywords:
PPIase activitycyclophilinscyclosporin Ainhibitorspathogensprotein structure

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Area of Science:

  • Biochemistry
  • Molecular Biology
  • Structural Biology

Background:

  • Cyclophilins are conserved peptidyl-prolyl cis-trans isomerases (PPIases) vital for cellular functions.
  • Microbial cyclophilins are increasingly recognized for their roles in pathogen virulence and drug resistance.
  • Protozoan parasites often have expanded cyclophilin families, suggesting specialized functions.

Purpose of the Study:

  • To review the structural variability and kinetic diversity of pathogen-derived cyclophilins.
  • To compare microbial cyclophilins with their human homologues.
  • To explore the therapeutic potential of targeting microbial cyclophilins.

Main Methods:

  • Structural analysis of pathogen cyclophilins.
  • Enzymatic kinetic studies.
  • Ligand-binding assays.
  • Review of existing literature on microbial cyclophilins and inhibitors.

Main Results:

  • Pathogen cyclophilins display significant structural and kinetic differences compared to human cyclophilins.
  • These variations influence their enzymatic activity and ligand interactions.
  • Natural products like cyclosporin A and synthetic compounds show promise as inhibitors.

Conclusions:

  • Structural and kinetic diversity of microbial cyclophilins offers opportunities for selective drug development.
  • Targeting pathogen cyclophilins could lead to novel antimicrobial strategies.
  • Further research into microbial cyclophilin structure-function relationships is warranted for therapeutic advancement.