Figure 2:
Representative structures for the three FSE conformations. The 77-nt 3_6 pseudoknot (largest MD cluster center structure from RNAComposer) has Stems 1 and 2 coaxially stacked. The 87-nt 3_3 pseudoknot (iFoldRNA) has Stems 1 and 3 coaxially stacked. The 77-nt 3_5 junction (SimRNA) has Stems 1 and 2 coaxially stacked. The 2D structures are extracted using 3DNA-DSSR,46 and the numbers of hydrogen bonds formed in the stems (averaged over the last 500 ns of the simulations) are calculated using Gromacs.47