TABLE 3.

Mutations resulting in recurrent additions of PNG sites

gp120 region and virus	Amino acid and nucleotides at PNGa			Type of mutation	Macaque no.
V1	141	142	143
89.6P	S	S	S
	AGT	AGC	AGC
Variant	N	S	S	Transition	K97107, J97156, K97246, A98069, J98071, T98098, T98108, L98152
	AAT	AGC	AGC
C2	276	277	278
89.6P	D	F	T
	GAT	TTC	ACA
Variant	N	F	T	Transition	J97156, K97246, J98071, T98098, T98108, L98152
	AAT	TTC	ACA
V4	386	387	388
89.6P	N	T	A
	AAT	ACA	GCA
Variant 1	N	T	T	Transition	J97156, K97246, A98069, J98071, T98098, T98108
	AAT	ACA	ACA
Variant 2	N	T	S	Transversion	K97246
	AAT	ACA	TCA

^aUnderlined amino acids and nucleotides indicate mutations.