Fig. 2: Comparison of apo and bound IL-11.

Structural model of the IL-11 receptor recognition complex (ribbon representation) overlaid on the cryoEM map (transparent surface) (a). Ribbon representations of gp130 P496L (blue), IL-11 (yellow), IL-11Rα (orange) are shown. The region encompassed by the dotted box is enlarged in the right panel. Arrow indicates residues T77-L90 of IL-11. b Superposition of IL-11 from the IL-11 receptor recognition complex (yellow) with the apo IL-11 structure (purple, PDB:6O4O); Residues T77-L90 are boxed. This region is shown in detail for the bound form of IL-11 (c) and apo IL-11 (d).