Figure 1.

Consensus secondary structure of tmRNA and the secondary structure described by SCFG (pseudoknots missing). A. Consensus secondary structure of RF00023 (tmRNA) in Rfam. Stacking base pairs in 1 are parallel to base pairs in 2 and 3. 1, 2, and 3 are nested in 4. 2 and 3 form a pseudoknot. B. Secondary structure described by SCFG (pseudoknots missing).

Yuan and Sun BMC Bioinformatics 2013 14(Suppl 2):S25   doi:10.1186/1471-2105-14-S2-S25