1UE3:
reference: Structure of d(GCGAAAGC) (hexagonal form): a base-intercalated duplex as a stable structure., Sunami T, Kondo J, Hirao I, Watanabe K, Miura KI, Takenaka A, Acta Crystallogr D Biol Crystallogr 2004 Jan;60(Pt 1):90-6. PMID: 14684897

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