Fig. 1.
RNA hierarchical structure and dynamics. (A) Secondary and (B) tertiary structures of tRNA (Lys, 3). Reprinted with permission from [51]. Copyright 2010 Molcular Diversity Preservation International; (C) Quaternary structure of phi29 pRNA hexamer. Adapted with permission from [57]. Copyright 2021 American Chemical Society; (D) Three tiers of RNA dynamics in hierarchical free-energy landscape. Adapted with permission from [14]. Copyright 2019 Springer Nature Limited.