Figure 3

The profiles of the relative synonymous codon usage were shown as the vertical bar graph. The nucleocapaid (A) and spike (B) genes of human and mouse SARS-CoVs, as well as the human and mouse CTLD genes which were located near the nucleocapsid genes of SARS-CoVs (C) and were located far from those of SARS-CoVs (D) in the correspondence analysis in Figure 2B are presented. Genbank accession numbers are presented in legends. G1, Group 1 CoV; G2, Group 2 CoV; G3, Group 3 CoV; N, nucleocapsid gene of CoV; S, spike gene of CoV; CLEC, C-type lectin domain gene.