<p><b>Copyright information:</b></p><p>Taken from "Cloning of the canine RNA polymerase I promoter and establishment of reverse genetics for influenza A and B in MDCK cells"</p><p>http://www.virologyj.com/content/4/1/102</p><p>Virology Journal 2007;4():102-102.</p><p>Published online 23 Oct 2007</p><p>PMCID:PMC2241602.</p><p></p>ere aligned with MDCK sequences flanking the transcription initiation site mapped by primer extension. The first base of the predominate RNA transcript of the indicated species is labeled +1. Conserved residues are indicated blue, red and green lettering. For all the indicated species, the -1 position is a T (red) and the +1 position a purine residue (green). The sequences from +2 to +9 (blue) are conserved in the indicated mammalian species. Based on the aligned sequences, the G residue (arrow) in the MDCK sequences was predicted to be the RNA pol I promoter transcription initiation site
