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. 2013 Sep 26;110(42):16706–16707. doi: 10.1073/pnas.1316029110

Fig. 1.

Fig. 1.

Although the dance of this RNA hairpin is too exuberant, its torsion angle twists and turns, its sugar repuckering, and its base stacking all contribute to its conformational flexibility. Chen and Garcia (3) examine how these properties lead to folding of RNA tetraloops, but they also allow an RNA molecule to do catalysis and bind ligands.