Figure 1From: A fast and robust iterative algorithm for prediction of RNA pseudoknotted secondary structuresPseudoknotted and pseudoknot-free secondary structures. Examples of loops and canonical base pairs in a pseudoknotted and a pseudoknot-free secondary structure. The blue base pairs belong to the G big structure and the green base pairs belong to the G small structure, as defined in Section ‘Definition of G b i g and G s m a l l ’. This figure was produced using the VARNA software [55].Back to article page