TABLE 1.

The relative synonymous codon usage (RSCU) patterns of PEDV in comparison with the RSCU values of its natural host (Sus scrofa) as well as reference animal model hosts including Homo sapiens.

^aMean RSCU values of 56 PEDV strains. Termination codons (TER) and single codons encoding methionine (Met) and Tryptophan (Trp) were excluded from correspondence analysis. Blue, red, and green RSCU values represent the preferred (RSCU > 1), over-represented (RSCU > 1.6), and under-represented (RSCU < 0.6) codons, respectively. Coincident preferred codon of PEDV and Sus scrofa are shown in bold, most preferred codons in PEDV displaying antagonism with Sus scrofa are marked in bold italic.