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  • Title: Differential response of avian red blood cell nucleosomes to heparin.
    Author: Doenecke D.
    Journal: Biochem Int; 1984 Jul; 9(1):129-36. PubMed ID: 6477634.
    Abstract:
    In avian erythrocyte chromatin, heparin interacts differentially with H1, H5 and the nucleosomal core histones. In non-erythroid cells, a partial extraction of H2A, H2B and H1 yields H3/H4/DNA complexes and particles of unchanged nucleosomal composition. The assay system for this heparin effect includes sucrose gradients, formaldehyde fixation and cesium chloride gradient centrifugation. A comparison of avian erythrocyte nucleosomes with chromatin subunits from precursor cells shows that H5 interferes with the heparin effect whereas a removal of H5 renders the core histones accessible to the polyanion.
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