Breaking pseudo-twofold symmetry in the poliovirus 3′-UTR Y-stem by restoring Watson–Crick base pairs

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FIGURE 4.
FIGURE 4.

Structure of the Ycu RNA hairpin. (A) Ensemble of the 12 lowest-energy structures. (B) Stereo view of the lowest-energy structure. The A residue bases are colored red, G residue bases are colored green, C residue bases are colored yellow, and U residue bases are colored orange. The sugar-phosphate backbone is in blue. (C) Top view down the helical axis of the lowest-energy structure, showing the C5–U18 base pair.

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  1. RNA 13: 781-792

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  1. August 2026, 32 (8)
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