Figure 4
From: Human SARS-CoV-2 has evolved to reduce CG dinucleotide in its open reading frames

Secondary structure formed by 5′-UTR of poliovirus (a) and SARS-CoV-2 (b). The secondary structure is based on 200 nucleotides immediately upstream of the translation start site. Sequence number of poliovirus is MG212486. That of SARS-CoV-2 is NC_045512. Both structures and their free energy (indicated in centre of the structure) are drawn/calculated using RNAstructure (version 5.7)27.