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  • Title: Tissue specificity of nonhistone proteins from human chromatin.
    Author: Dewair MA, Matthaei H.
    Journal: Mol Gen Genet; 1976 Aug 02; 146(3):309-12. PubMed ID: 63910.
    Abstract:
    Nonhistone proteins were isolated from human placental and tonsillar chromatins. Antiserum was prepared against a complex from some nonhistone proteins and DNA (NP-DNA) from placental chromatin. With the help of polyacrylamide gel electrophoresis and immunological methods the tissue specificity of human chromatin nonhistone proteins was established. The described organ immunogenic specificity of the complex of DNA and nonhistone protein (NP-DNA) from human chromatin is in accordance with data published on similar complexes from different animal organs. Besides, it is shown that shearing of chromatin leads to large chifts in NP-DNA concentrations required for maximum complement fixation in the presence of the prepared antiserum. This may probably be due to a damage of certain chromatin super structures which involve some of the nonhistone proteins and DNA sequences from both the more condensed and less condensed parts of chromatin.
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