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  • 1
    ISSN: 1617-4623
    Keywords: Nuclear matrix attachment ; GATA ; Chicken globin genes ; DNA-binding protein
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The sequence-specific DNA-binding protein factor F6, which binds upstream of the cluster of the chicken α-globin genes, has previously been found to interact with a DNA fragment containing a replication origin and a nuclear matrix binding site. This protein has been partially characterized. Based on its molecular weight and binding affinity, F6 belongs to a family of GATA proteins, the chicken equivalent of transcription factor NFE-1. An oligonucleotide including the binding site for F6 competes for binding of the above-mentioned DNA fragment to the nuclear matrix. This indicates an involvement of this protein in the interaction between DNA and the nuclear matrix.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1617-4623
    Keywords: Bent DNA ; DNA melting pattern ; Replication origin ; Matrix attachment site ; Globin genes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The distribution of specific DNA sequence elements in a 2.9 kb HindIII fragment of chicken DNA containing the replication origin and the upstream matrix attachment site (MAR) of the α-globin gene domain was investigated. The fragment was shown to contain a CR1-type repetitive element and two stably bent DNA sequences. One of them colocalizes with the previously described MAR element and with the recognition site for a proliferating-cell-specific, DNA-binding protein. The melting pattern of a set of subfragments of the region proved to be non random. No correlation between the distribution of readily melting sequences and bent DNA was found. The possible importance of curved, low-melting and repetitive DNA sequences for the organization of the upstream boundary of the α-globin gene domain and the function of the replication origin is discussed.
    Type of Medium: Electronic Resource
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