Figure 6: Structural changes induced by λ5-UR^22-45 binding to GAL1.

The structures of GAL1/λ5-UR^22-45 (in light blue and grey, respectively) and GAL1/lactose¹⁷ (in beige and green, respectively) complexes are superimposed. Side chains of Arg73 residue from each structure are represented and labelled.