FIG 6.

gB843 rescues a variety of gH/gL and gp42 mutants. (A) The fusion of epithelial cells expressing T7 polymerase was monitored using CHO-K1 effector cells expressing wt gB or the gB843 mutant along with wt gH/gL or gH/gL mutant expression constructs and the T7 luciferase plasmid. (B) The fusion of Daudi B cells with wt gB or the gB843 mutant, along with gH/gL expression constructs, the T7 luciferase reporter plasmid, and wt gp42 or gp42 mutants, was tested. M-gp42, membrane-bound gp42 mutant.