Figure 6. Selected IGHV1-2*02/IGKV3-20*01 IgGs cloned from the stepwise immunized mice displayed CD4bs-specific binding to multiple Env proteins.
ELISA endpoint binding titers of 27 IGHV1-2*02/IGKV3-20*01 paired IgGs cloned from the stepwise immunized mice 1540 (wk2), 1536 (wk6), 1539 (wk10) and 1538 (wk22) to various Env antigens and their CD4bs-KO mutants (Δ) were compared to the binding titers of VRC01 class antibodies and their germlines (gl). The number of VH1-2 AA mutations in each IgG is listed in the right-most column, and they are reversely correlated with the binding titers to C13 and 426c mutants (p<0.0001).
