1R3O:
reference: First look at RNA in L-configuration., Vallazza M, Perbandt M, Klussmann S, Rypniewski W, Einspahr HM, Erdmann VA, Betzel Ch, Acta Crystallogr D Biol Crystallogr. 2004 Jan;60(Pt 1):1-7. Epub 2003 Dec, 18. PMID: 14684885

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