Figure 2 - full size

 

Figure 2.
Fig. 2. Hydrogen-bonding network in the epitope-binding site of DQ2. I-gliadin is shown in yellow (C, yellow; N, blue; O, red), and HLA-DQ2 - and -chains are shown in gray (C, gray; N, blue; O, red). Gray spheres represent water molecules. Atom-to-atom distances are given in Å.