Figure 5

An example RNA structure with a pseudoknot. A projection of a 3D structure of a viral RNA pseudoknot (crystal structure, PDB id 1L2X) in the simplified cartoon format (backbone as a ribbon, nucleotide residues as sticks). 5’ and 3’-terminal residues are labeled. The structure is colored as a rainbow spectrum, from 5’ (red) to 3’ (blue) termini.