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Related Experiment Video

Updated: Jul 5, 2026

Isolation, Processing and Analysis of Murine Gingival Cells
09:47

Isolation, Processing and Analysis of Murine Gingival Cells

Published on: July 2, 2013

Purification and characterization of gingipains.

Jan Potempa1, Ky-Anh Nguyen2

  • 1Jagiellonian University, Krakow, Poland.

Current Protocols in Protein Science
|April 23, 2008
PubMed
Summary

This study details an efficient method for purifying gingipains, key virulence factors from Porphyromonas gingivalis involved in periodontal disease. The purified proteases are stable and retain activity after long-term storage.

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Area of Science:

  • Microbiology
  • Biochemistry
  • Periodontology

Background:

  • Gingipains are cysteine proteases produced by Porphyromonas gingivalis.
  • These proteases are crucial virulence factors in the pathogenesis of periodontal disease.
  • Efficient purification methods are needed for studying these enzymes.

Purpose of the Study:

  • To describe an efficient procedure for purifying gingipains from P. gingivalis.
  • To provide protocols for organism growth and protease characterization.
  • To enable further research into gingipain function and inhibition.

Main Methods:

  • Acetone precipitation of gingipains from P. gingivalis growth medium.
  • Gel filtration to separate high-molecular-mass gingipains (Kgp, HRgpA) from RgpB.

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A Quantitative Glycomics and Proteomics Combined Purification Strategy
11:38

A Quantitative Glycomics and Proteomics Combined Purification Strategy

Published on: March 8, 2016

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Last Updated: Jul 5, 2026

Isolation, Processing and Analysis of Murine Gingival Cells
09:47

Isolation, Processing and Analysis of Murine Gingival Cells

Published on: July 2, 2013

A Quantitative Glycomics and Proteomics Combined Purification Strategy
11:38

A Quantitative Glycomics and Proteomics Combined Purification Strategy

Published on: March 8, 2016

  • Affinity chromatography on Arg-Sepharose using differential elution with lysine and arginine.

    • Main Results:

    • Successful separation of Kgp, HRgpA, and RgpB gingipains.
    • Purified gingipains are stable and maintain activity.
    • Protocols for P. gingivalis cultivation and enzyme characterization are provided.

    Conclusions:

    • An efficient and scalable method for gingipain purification has been established.
    • The purified gingipains are stable for long-term storage at -80°C.
    • This work facilitates further investigation of P. gingipains in periodontal disease.