6DB9:
reference: Structural basis for activation of fluorogenic dyes by an RNA aptamer lacking a G-quadruplex motif., Shelke SA, Shao Y, Laski A, Koirala D, Weissman BP, Fuller JR, Tan X, Constantin TP, Waggoner AS, Bruchez MP, Armitage BA, Piccirilli JA, Nat Commun. 2018 Oct 31;9(1):4542. doi: 10.1038/s41467-018-06942-3. PMID: 30382099

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