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  • Title: The structure of cell membranes involved in intercellular communication.
    Author: Goodenough DA.
    Journal: Am J Clin Pathol; 1975 May; 63(5):636-45. PubMed ID: 1130322.
    Abstract:
    The molecular structure of mouse hepatocyte gap junctions is investigated with corrlated electron microscopy, biochemistry, and x-ray diffraction technics. These studies reveal that the gap junction is composed of a hexagonal lattice of protein subunits, connexons, which pierce the hydrophobic membrane and establish a structural basis for intercellular hydrophilic channels or pores. By digesting liver-cell membranes with trypsin, a preparation of open- and closed-gap junction vesicles can be generated; this preparation will permit direct permeability measurements across the gap junction membranes in an in-vitro system.
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