Figure 1.

(Left) gp120 (blue) bound to CD4 (green). (Right) The same complex bound to Ibalizumab (yellow and purple), a monoclonal antibody HIV entry inhibitor. Notice that Ibalizumab does not bind to gp120.

Razavian et al. BMC Genomics 2012 13(Suppl 1):S5   doi:10.1186/1471-2164-13-S1-S5