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  • Title: [Role of the cytosolic factor in the interaction of [3H] alpha-tocopherol with rat liver nuclei].
    Author: Donchenko GV, Malen'kikh LB, Kapralov AA, Baryk OIa, Mel'nik VN.
    Journal: Biokhimiia; 1988 Dec; 53(12):2019-24. PubMed ID: 3250623.
    Abstract:
    A protein fraction (Mr = 30-70 kD) specifically binding [3H]alpha-tocopherol was isolated from rat liver cytosol. Using high performance ion exchange chromatography, this fraction was separated into acid and alkaline protein subfractions. Acid proteins make up to 41% of the total protein pool and they bind the label 8 times more intensively than the alkaline ones. Cytosol and its protein fraction with an average molecular mass increase 2.2-2.5-fold the binding of labeled vitamin E to isolated liver nuclei. It is concluded that the cytosolic proteins having a medium molecular mass are involved in tocopherol interaction with the nuclei.
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