6V9D:
reference: Structure-Guided Engineering of the Homodimeric Mango-IV Fluorescence Turn-on Aptamer Yields an RNA FRET Pair., Trachman RJ 3rd, Cojocaru R, Wu D, Piszczek G, Ryckelynck M, Unrau PJ, Ferre-D'Amare AR, Structure. 2020 May 1. pii: S0969-2126(20)30126-X. doi:, 10.1016/j.str.2020.04.007. PMID: 32386573

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