1MY9:
reference: A dimeric RNA quadruplex architecture comprised of two G:G(:A):G:G(:A) hexads, G:G:G:G tetrads and UUUU loops., Liu H, Matsugami A, Katahira M, Uesugi S, J Mol Biol 2002 Oct 4;322(5):955-70. PMID: 12367521

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