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Related Experiment Videos

Poly(A) polymerase activity in human rotavirus.

M Gorziglia, J Esparza

    The Journal of General Virology
    |April 1, 1981
    PubMed
    Summary
    This summary is machine-generated.

    Human rotavirus possesses poly(A) polymerase activity, essential for viral RNA replication. This enzyme activity was detected in purified rotavirus particles under specific laboratory conditions.

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    Area of Science:

    • Virology
    • Molecular Biology
    • Enzymology

    Background:

    • Polyadenylation is crucial for viral RNA stability and translation.
    • Poly(A) polymerase activity has been previously identified in reovirus.

    Purpose of the Study:

    • To investigate the presence and characteristics of poly(A) polymerase activity in human rotavirus.

    Main Methods:

    • Partially purified human rotavirus preparations were used.
    • Enzymatic assays were conducted at 43°C in Tris buffer with Mn2+.
    • Product characterization involved gel filtration and DEAE-cellulose chromatography.

    Main Results:

    • Poly(A) polymerase activity was detected in human rotavirus.
    • The enzymatic activity was exclusively associated with complete, double-shelled viral particles.

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  • The poly(A) product consisted of oligonucleotides comparable in size to those from reovirus.

    • Conclusions:

    • Human rotavirus encodes a poly(A) polymerase activity.
    • This enzyme is integral to the viral particle structure.
    • The findings contribute to understanding rotavirus replication mechanisms.