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A simple method for isolation of human properdin by affinity chromatography

T Konno, H Hirai

    Journal of Immunological Methods
    |January 1, 1976
    PubMed
    Summary

    Human properdin, a key complement system protein, was successfully isolated using immunoadsorbent chromatography. Both methods yielded highly pure and active properdin without detectable immunochemical differences.

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    Area of Science:

    • Immunology
    • Protein Chemistry

    Background:

    • Properdin is a crucial component of the human complement system.
    • Efficient isolation methods are needed for studying properdin's function.

    Purpose of the Study:

    • To develop and compare methods for isolating human properdin.
    • To assess the purity and activity of isolated properdin.

    Main Methods:

    • Immunoadsorbent column chromatography using antibodies against human serum.
    • Direct isolation of properdin from serum euglobulin fraction using specific anti-properdin antibodies.

    Main Results:

    • Two distinct immunoadsorbent chromatography methods were established for properdin preparation.
    • Isolated properdin exhibited high purity and significant biological activity.

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  • No immunochemical variations were observed between properdin isolated by the two methods.

    • Conclusions:

    • Immunoadsorbent chromatography provides an effective means for obtaining pure, active human properdin.
    • The described methods are suitable for obtaining properdin for further research.