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Related Experiment Videos

Mammalian hepatic lectin.

R J Stockert, A G Morell, I H Scheinberg

    Science (New York, N.Y.)
    |October 25, 1974
    PubMed
    Summary
    This summary is machine-generated.

    A rabbit hepatic protein acts as a lectin, binding asialoglycoproteins and causing red blood cell agglutination. These dual functions involve the same active sites on the protein.

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    Area of Science:

    • Biochemistry
    • Immunology
    • Cell Biology

    Background:

    • Hepatic proteins play crucial roles in biological recognition processes.
    • Lectins are carbohydrate-binding proteins with diverse functions, including cell agglutination.
    • Asialoglycoproteins are involved in cellular uptake and clearance mechanisms.

    Purpose of the Study:

    • To characterize a rabbit hepatic protein with specific binding properties.
    • To investigate the lectin-like activity of this hepatic protein.
    • To determine if asialoglycoprotein binding and erythrocyte agglutination share common mechanisms.

    Main Methods:

    • Isolation and purification of the rabbit hepatic protein.
    • Assays for asialoglycoprotein binding.
    • Erythrocyte agglutination assays using various species and pre-treatments.

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    Main Results:

    • The rabbit hepatic protein specifically binds asialoglycoproteins.
    • This protein exhibits lectin activity, agglutinating human and rabbit erythrocytes.
    • Neuraminidase-treated erythrocytes from rat, mouse, and guinea pig were also agglutinated.
    • Evidence suggests that both binding and agglutination involve the same active sites.

    Conclusions:

    • The identified rabbit hepatic protein possesses dual functionality: asialoglycoprotein binding and lectin-mediated erythrocyte agglutination.
    • These functions are mechanistically linked, likely occurring at the same active sites.
    • This finding provides insights into molecular recognition mechanisms in the liver.