Figure 3: The interdomain region in the Sbound state.

Close-up of the interdomain region of FimHK12·DsF·HM in the Abound form (left) and FimHK12·DsF·HM in the Sbound state (right). A cartoon representation for each crystal structure, similar to Fig. 1a, is given. Key residues in the interface are shown as sticks. FimHP, FimHL and DsF are coloured in yellow, red and green, respectively.