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[Specific hypothalamic proteins]

R M Srapionian, S A Saakian, F M Saakian

    Voprosy Biokhimii Mozga
    |January 1, 1978
    PubMed
    Summary
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    Researchers isolated four cattle hypothalamus protein fractions with coronarodilatory effects. These proteins exhibit distinct physicochemical properties, suggesting potential dual roles as neurohormone carriers and precursors.

    Area of Science:

    • Biochemistry
    • Neuroendocrinology
    • Physiology

    Background:

    • Previous research identified four protein fractions in bovine hypothalamus with coronarodilatory effects.
    • Understanding the nature of these proteins is crucial for elucidating their physiological roles.

    Purpose of the Study:

    • To develop isolation methods for coronaroactive proteins from cattle hypothalamus.
    • To characterize the physicochemical properties of these isolated proteins.

    Main Methods:

    • Isolation and purification of protein fractions from bovine hypothalamus.
    • Analysis of physicochemical properties including amino acid composition, molecular weight, and iso-electric point.
    • Electrophoretic analysis using 7.5% polyacrylamide gel.

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    Main Results:

    • Successfully isolated highly pure coronaroactive proteins.
    • Quantified protein content at 12 mg/kg of fresh bovine hypothalamus tissue.
    • Demonstrated heterogeneity among the proteins regarding amino acid composition, molecular weight, electrophoretic mobility, and iso-electric points.

    Conclusions:

    • The developed methods effectively isolate pure coronaroactive proteins from cattle hypothalamus.
    • The identified proteins are heterogeneous, indicating distinct structures and functions.
    • A potential dual role as neurohormone carriers and precursors is proposed for these proteins.