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Related Experiment Videos

[Measuring neuraminidase activity by the thiobarbiturate method].

I A Chernova, L K Shagaeva, S N Lavrovskiĭ

    Prikladnaia Biokhimiia I Mikrobiologiia
    |November 1, 1987
    PubMed
    Summary

    Ascorbic acid can replace toxic sodium arsenite for measuring neuraminidase activity. This modified thiobarbituric acid method works with various substrates, improving enzyme assays.

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    [Catalytic properties of neuraminidase of non-cholera vibrios].

    Voprosy meditsinskoi khimii·1991

    Area of Science:

    • Biochemistry
    • Enzymology

    Context:

    • Neuraminidase (EC 3.2.1.18) activity assays commonly use the thiobarbituric acid technique.
    • This method requires a reducing agent to quench excess periodate.
    • Sodium arsenite is a commonly used but toxic reducing agent.

    Purpose:

    • To compare reducing agents for periodate removal in neuraminidase activity assays.
    • To identify a less toxic alternative to sodium arsenite.
    • To validate a modified assay for different substrate types.

    Summary:

    • Several reducing agents were evaluated for the thiobarbituric acid assay of neuraminidase.
    • A 20% ascorbic acid solution effectively replaced toxic sodium arsenite.
    • The modified assay is suitable for both high-molecular weight (ovomucin) and low-molecular weight (glycomacropeptide) substrates.

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    Impact:

    • Provides a safer, non-toxic alternative for neuraminidase activity determination.
    • Enhances the applicability of the thiobarbituric acid method across different substrates.
    • Facilitates more accessible and safer biochemical research involving neuraminidase.