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Isolation and characterization of autoagglutination factor of Yersinia pestis Hms- cells

O N Podladchikova1, V A Rykova

  • 1FSHI Research Institute for Plague Control, 344022 Rostov-on-Don, Russia. plague@ic.ru

Biochemistry. Biokhimiia
|December 5, 2006
PubMed

Insights

Researchers isolated an autoagglutination factor (AF) from plague bacteria. This factor, a protein complex, binds iron and interacts with diagnostic bacteriophages, aiding plague research.

Area of Science:

  • Microbiology
  • Biochemistry
  • Immunology

Background:

  • The plague agent possesses factors influencing its behavior and diagnostic properties.
  • Understanding these factors is crucial for developing effective diagnostic tools and treatments.

Purpose of the Study:

  • To develop an isolation method for the autoagglutination factor (AF) from Hms(-) cells of the plague agent.
  • To characterize the physicochemical properties of the purified AF.

Main Methods:

  • Isolation of autoagglutination factor (AF) from Hms(-) cells of the plague agent.
  • Physicochemical characterization of the purified AF.

Main Results:

  • A method for AF isolation was successfully developed.
  • Purified AF is a complex of a 17.5-kD protein and a low molecular weight peptide.
  • The peptide component exhibits iron-binding, siderophore, hydrophobic, and immunochemical activities.
  • AF interacts with the plague diagnosticum L-413c bacteriophage.

Conclusions:

  • The autoagglutination factor (AF) has been successfully isolated and characterized.
  • The low molecular weight peptide component is key to AF's functional properties, including interaction with diagnostic bacteriophages.
  • This research provides insights into plague agent virulence and diagnostic mechanisms.

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