Table 2.

Rescue of infectivity of pseudotyped WT and mutant env⁻ virions is Env-specific.^a

Virus	HIV-1 (pIIINL4env)	A-MLVenv	VSV-G (pHCMV-Genv)
WT	100	100	100
P147L	10 ± 6b	12 ± 8	44 ± 15
S149A	14 ± 10	9 ± 5	80 ± 15

^aInfectivity was measured in a single-cycle assay using TZM-bl indicator cells (Derdeyn et al., 2000; Platt et al., 1998; Wei et al., 2002). WT infectivity was set at 100%. Three independent experiments were performed. The data shown are from a representative experiment, in which each sample was assayed in triplicate.

^bNumbers to the right of the “±” represent the standard deviation.