Figure 4. TIR/TIR Domain Interfaces in the L6 TIR Crystal.
(A) Ribbon representation of the asymmetric unit interfaces (green and yellow) and the interface related by crystallographic symmetry (yellow and cyan).
(B) As in (A), with the residues involved in close contacts (at distances <4 Å ) shown in wireframe. Hydrogen bonds/salt bridges are shown as dotted red lines.