Table 3.

Amino acid substitutions in WNV isolates from Mexico and El Paso, Texas, 2005-2010^a

			Group 1			Group 2			Group 3
Gene/Position		NY99b	TX7465	TX5282	TX5718	TX6866	TX5947	TX6115	TX2686	TX6745	TX6572
C	119	A	V	V	V	.	.	.	.	.	.
	121	V	A	A	A	.	.	.	.	.	.
prM	140	V		I	I	.	.	.	.	.	A
E	51	A	T	T	T	.	.	.	.	.	.
	159	V	A	A	A	A	A	A	A	A	A
NS1	314	R	.	.	.	K	K	K	.	.	.
NS2A	26	K	R	R	R	.	.	.	.	.	.
	89	F	L	L	L	.	.	.	.	.	.
	119	H	.	.	.	Y	Y	Y	.	.	.
	224	A	.	.	.	V	V	V	.	.	.
NS2B	116	L	.	.	.	.	M	M	.	.	.
	119	V	L	L	L	.	.	.	.	.	.
NS3	249	P	.	L	L	.	.	.	.	.	.
	258	V	.	.	.	I	I	I	.	.	.
	355	Y	.	.	.	F	F	F	.	.	.
NS4A	85	A	.	.	.	T	T	T	T	T	T
	135	V	.	M	M	.	.	.	.	.	.
NS5	202	Y	.	.	.	F	F	F	.	.	.
	314	K	R	R	R	.	.	.	R	R	R
	860	A	.	.	.	.	.	.	.	T	T

^aC, capsid; prM, pre-membrane; E, envelope; NS, nonstructural. Nucleotide and amino acid changes are relative to the NY99 genotype strain [AF196835]. Dots indicate no change from the NY99 isolate.

^bSubstitutions indicated for conserved changes in >1 isolate.