Figure 1.

The overall tRNA abundance for each codon position of the PRRSV nsp1 α gene. The black bar corresponds to the β-strand region in the nsp1 α; the blue bar corresponds to the coil region in the nsp1 α; the red bar corresponds to helix region in the nsp1 α . (a) The codon positions range from the first position to the 45th position of the nsp1 α . (b) The codon positions range from the 46th position to the 90th position of the nsp1 α . (c) The codon positions range from the 91th position of the nsp1 α . (d) The codon positions range from the 136th to the 175th position of the nsp1 α .