Sequence logo of untranslated region
The 5’ and 3’-untranslated region (UTR) were retrieved from each
SARS-CoV-2 genome and aligned using MUSCLE v3.8.31
[20]. The conservation of UTR was
visualized using WebLogo
(http://weblogo.threeplusone.com/)
and the second structure of 5’UTR was predicted using the RNAfold
WebServer
(http://rna.tbi.univie.ac.at/cgi-bin/RNAWebSuite/RNAfold.cgi)
with the default parameters.