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  • Title: Characterization of lipoprotein particles isolated from the Golgi apparatus of rat liver.
    Author: Mahley RW, Hamilton RL, Lequire VS.
    Journal: J Lipid Res; 1969 Jul; 10(4):433-9. PubMed ID: 4978881.
    Abstract:
    It has been proposed that particles within tubules and vesicles of the Golgi apparatus of liver cells are precursors of very low density lipoproteins in blood plasma. To characterize these particles we isolated a cell fraction rich in Golgi apparatus and associated particles from rat liver in quantities sufficient for analysis. Particles freed from the membranes of the Golgi apparatus and floated at d = 1.006 were studied by chemical analysis, immunodiffusion, and paper electrophoresis. The lipid composition of the Golgi particles was similar to that of very low density lipoproteins from the same rats. The protein content was about 10% of dry weight for both the Golgi particles and plasma very low density lipoproteins. The Golgi particles formed lines of identity with plasma very low density lipoproteins during immunodiffusion against antiserum to plasma very low density lipoproteins. On paper electrophoresis, however, many Golgi particles remained near the origin, with only a few migrating to the pre-beta position. It was concluded that the lipoproteins in the Golgi apparatus are the precursors of plasma very low density lipoproteins.
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