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  • Title: [Extraction and purification of the chief glycoprotein of the erythrocyte membrane].
    Author: Le Bec A, Mayer S.
    Journal: Rev Fr Transfus Immunohematol; 1979 Sep; 22(4):329-41. PubMed ID: 556211.
    Abstract:
    The major glycoprotein of the human erythrocyte membrane has been released from ghosts, by the non-ionic detergent Tween 20 at pH 8,5 and at low ionic strength and further purified by successive passages through columns of DEAE Sephadex at pH 6,8 and CM Sephadex at pH 5 or by hydroxyapatite chromatography at pH 6,8. The purified glycoprotein thus obtained represents about 1 % of the membrane proteins, and shows two major bands upon polyacrylamide gel electrophoresis. These bands designed as PAS 1 and PAS 2 are the dimer and the monomer of the glycoprotein. Several other minor bands can also appear on SDS gels, according to experimental conditions of solubilization and purification and are probably oligomers of PAS 1 and PAS 2. This glycoprotein possess inhibitory activity against various phytohemagglutinins.
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