2D representation of RNA pseudoknots () class IIa—the actual sequence is of () class IIb—the sequence is of an aphid

<p><b>Copyright information:</b></p><p>Taken from "Ribosomal frameshifting in decoding antizyme mRNAs from yeast and protists to humans: close to 300 cases reveal remarkable diversity despite underlying conservation"</p><p></p><p>Nucleic Acids Research 2007;35(6):1842-1858.</p><p>Published online 1 Mar 2007</p><p>PMCID:PMC1874602.</p><p>© 2007 The Author(s)</p> The frameshift site is indicated with orange letters. Black arrowheads represent substitutions deduced from phylogenetic comparison to orthologous genes. Non-compensatory changes in the stems are shown in black letters; compensatory changes are shown in blue letters