(A)-(C) The scattering profiles (A), the PDDFs (B) and the dimensionless Kratky plots (C) of xrRNA1-2s from DENV2 (cyan), ZIKV (red) and WNV (blue). The inset in (A) shows the guinier regions of the respective scattering profiles with linear fit lines. The dimensionless Kratky plot of ZIKV xrRNA1 (red dashed line) was included in (C) for comparison, indicating that the structures of xrRNA1-2s are all well folded. 