Figure 3
From: Iron and bismuth bound human serum transferrin reveals a partially-opened conformation in the N-lobe

(a) Interactions between the terminal helix (α31) and residues of N-lobe in FeNFeC-hTF.(b) Interactions between the terminal helix (α31) and residues of N-lobe in BiNFeC-hTF. The interaction residues are represented in stick model with color corresponding to different subdomains as shown in Figure 1a. The water molecules are shown in red as sphere model.