Figure 1 - full size

Figure 1.
Fig. 1. The four different isomers of IgE antibody SPE7. A close-up view of the binding site is shown as a semitransparent surface, colored according to electrostatic potential (blue for positive, red for negative). The figure was prepared with GRASP (39, 40) and AESOP (41). The Ab^3 and Ab^4 models are presented without ligand.