Subcellular Strategies for Tracing Receptor-Mediated Ligand Uptake Pathways in Liver
Receptor-mediated uptake by liver of asialoglycoproteins, polypeptide hormones and a β-adrenergic antagonist was followed by analytical centrifugation in sucrose gradients of tissue homogenates prepared at various intervals after organ perfusion. All ligands were transferred from the plasma membrane to a vesicular fraction of low density. Problems associated with the preparation of the complex low-density membrane fractions are described, and a preliminary description of their properties is provided.
KeywordsSucrose Filtration Albumin Carbohydrate EDTA
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