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  • Title: The structure of nucleosomal core particles within transcribed and repressed gene regions.
    Author: Studitsky VM, Belyavsky AV, Melnikova AF, Mirzabekov AD.
    Journal: Nucleic Acids Res; 1988 Dec 09; 16(23):11187-205. PubMed ID: 3144704.
    Abstract:
    The arrangement of histones along DNA in nucleosomal core particles within transcribed heat shock gene (hsp 70) region and repressed insertion within ribosomal genes of Drosophila was analysed by using protein-DNA crosslinking methods combined with hybridization tests. In addition, two-dimensional gel electrophoresis was employed to compare the overall nucleosomal shape and the nucleosomal DNA size. The arrangement of histones along DNA and general compactness of nucleosomes were shown to be rather similar in transcriptionally active and inactive genomic regions. On the other hand, nucleosomes within transcriptionally active chromatin are characterized by a larger size of nucleosomal DNA produced by micrococcal nuclease digestion and some peculiarity in electrophoretic mobility.
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