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Chromatographic studies on picornavirus capsid polypeptides.

I U Pardoe, A T Burness, F W Clothier

    The Journal of General Virology
    |June 1, 1975
    PubMed
    Summary

    Encephalomyocarditis, Mouse-Elberfeld, and type 5 rhinoviruses share similar polypeptide elution patterns on calcium phosphate chromatography. Major capsid proteins separate into three distinct peaks (CI, C2, C3) based on their properties.

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    Area of Science:

    • Virology
    • Biochemistry
    • Molecular Biology

    Background:

    • Picornaviruses are a diverse group of small RNA viruses.
    • Understanding picornavirus capsid protein structure is crucial for antiviral development.
    • Chromatographic techniques are valuable for separating viral components.

    Purpose of the Study:

    • To investigate the chromatographic behavior of encephalomyocarditis, Mouse-Elberfeld, and type 5 rhinoviruses.
    • To characterize the elution profiles of their major capsid polypeptides.
    • To compare the polypeptide separation patterns among these three picornaviruses.

    Main Methods:

    • Chromatography on calcium phosphate (brushite).
    • Elution using a linear phosphate buffer gradient with sodium dodecyl sulphate.

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  • Analysis of eluted fractions using polyacrylamide gel electrophoresis.

    • Main Results:

    • All three viruses exhibited similar elution profiles, yielding three major peaks (CI, C2, C3).
    • Polyacrylamide gel electrophoresis identified distinct capsid polypeptides within each peak.
    • The elution order of major capsid polypeptides was determined as delta (CI), gamma (C2), and alpha (C3).

    Conclusions:

    • The major capsid polypeptides of encephalomyocarditis, Mouse-Elberfeld, and type 5 rhinoviruses demonstrate conserved chromatographic behavior.
    • This conserved behavior suggests similarities in the structural properties of their capsid proteins.
    • The findings provide insights into picornavirus capsid protein organization and separation.