1OZ8:
reference: Intramolecular higher order packing of parallel quadruplexes comprising a G:G:G:G tetrad and a G(:A):G(:A):G(:A):G heptad of GGA triplet repeat DNA., Matsugami A, Okuizumi T, Uesugi S, Katahira M, J Biol Chem 2003 Jul 25;278(30):28147-53. Epub 2003 May 14. PMID: 12748183

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