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Related Experiment Videos

Apolipoprotein B variant derived from rat intestine.

K V Krishnaiah, L F Walker, J Borensztajn

    Proceedings of the National Academy of Sciences of the United States of America
    |July 1, 1980
    PubMed
    Summary

    Researchers identified a unique apolipoprotein B variant in rat lymph and plasma lipoproteins, particularly under high-fat diets. This variant exhibits distinct immunological and molecular properties compared to standard apolipoprotein B.

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    Journal of lipid research·2004

    Area of Science:

    • Biochemistry
    • Lipid Metabolism
    • Molecular Biology

    Background:

    • Apolipoprotein B (ApoB) is a crucial protein in lipoprotein metabolism.
    • Different lipoprotein classes (chylomicrons, VLDL, LDL) transport lipids throughout the body.
    • Understanding ApoB variants can provide insights into lipid disorders.

    Purpose of the Study:

    • To characterize a specific variant of apolipoprotein B found in rat lipoproteins.
    • To investigate the presence and properties of this variant under different dietary conditions.

    Main Methods:

    • Electrophoresis on sodium dodecyl sulfate/polyacrylamide gel (3.5% NaDodSO4/polyacrylamide gel).
    • Immunological property assessment.
    • Analysis of lipoprotein fractions from rat lymph and plasma.

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    Main Results:

    • A variant of apolipoprotein B was detected in lymph chylomicrons, VLDL, and LDL.
    • This variant was also found in plasma VLDL of fed rats and plasma VLDL/LDL of rats on a high-fat, high-cholesterol diet.
    • The variant was the sole apolipoprotein B in lymph chylomicrons and VLDL.
    • It differed immunologically and in apparent molecular weight from the apolipoprotein B in normal plasma LDL.

    Conclusions:

    • A distinct apolipoprotein B variant exists in rat lipoproteins, particularly in lymph and under specific dietary challenges.
    • This variant possesses unique biochemical and immunological characteristics.
    • Further research into this ApoB variant may elucidate novel aspects of lipoprotein assembly and transport.