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  • Title: Interaction between cisplatin-modified DNA and the HMG boxes of HMG 1: DNase I footprinting and circular dichroism.
    Author: Locker D, Decoville M, Maurizot JC, Bianchi ME, Leng M.
    Journal: J Mol Biol; 1995 Feb 17; 246(2):243-7. PubMed ID: 7869375.
    Abstract:
    The interactions between the two boxes A and B of HMG 1 and cis-diamminedichloroplatinum(II)-modified DNA containing a single intrastrand cross-link at the d(GpG) site were studied by DNase I footprinting and circular dichroism. The DNAase I cleavage patterns of the HMG box-platinated DNA complexes are identical, the two boxes inhibiting the DNase I cutting over at least 15 and 12 nucleotide residues in the platinated strand and the complementary strand, respectively. As judged by circular dichroism, the two boxes have the same alpha-helical content (56%) and they induce the same conformational changes in the platinated DNA.
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