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Related Experiment Videos

[Identification of streptavidin]

W Jia, J Huang, W Meng

    Hua Xi Yi Ke Da Xue Xue Bao = Journal of West China University of Medical Sciences = Huaxi Yike Daxue Xuebao
    |December 1, 1995
    PubMed
    Summary

    Researchers reliably isolated and purified streptavidin (SA), achieving high productivity and confirming its suitability for immunological applications through rigorous testing.

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    Area of Science:

    • Biochemistry
    • Protein Chemistry
    • Immunology

    Context:

    • Streptavidin (SA) is a crucial protein with widespread applications in biotechnology and diagnostics.
    • Previous research focused on SA isolation and purification methods.

    Purpose:

    • To further identify and characterize streptavidin (SA) based on prior isolation and purification research.
    • To validate the reliability of developed SA isolation and purification methods for immunological applications.

    Summary:

    • Successfully isolated and purified streptavidin (SA) with a yield of 23.2 mg/L from culture supernatant using DEAE-52 column chromatography.
    • Characterization included congruent ultraviolet absorption spectrum with Sigma product, SDS-PAGE revealing 2 bands, a molecular weight of 72,881 Da, pI of 6.0, and an average biotin-binding activity of 18 µg/mg.

    Impact:

    • Confirms the efficacy and reliability of the developed SA isolation and purification techniques.
    • Provides a robust method for obtaining high-purity streptavidin suitable for sensitive immunological assays and diagnostic tools.

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