Table 1  Nucleotide and amino acid differences of spike gene between the virulent iPEDVPT-P5 and attenuated iPEDVPT-P96 Viruses.
Position in Spike Gene  Nucleotide  Amino Acid
Nucleotide  Amino Acid  Domain  iPEDVPT-P5  iPEDVPT-P96  iPEDVPT-P5  iPEDVPT-P96
431  144  S10  C  T  T  I
1661  554  S1B  T  C  F  S
2659  887  S2  A  C  S  R
2902  968  S2  T  G  S  A
3062  1021  S2 HR1 †  T  G  I  S
3077  1026  S2 HR1 †  A  G  K  R
3755  1252  S2  T  G  L  R
4061  1354  S2 CT ‡  G  T  C  F
4073  1358  S2 CT ‡  G  T  C  F
4134  1378  S2 CT ‡  A  T  E  D
† HR1: heptad repeat 1; ‡ CT: cytoplasmic tail.