Figure 2.

(a) The tail is stabilized against the symmetry-related monomer (ribbon representation in grey) and folds within the cleft. The side chains of the extended tail of chain A are shown as yellow sticks (O atoms in red and N atoms in blue). The electron-density map around the tail (2F _o − F _c contoured at 1.3σ) is shown as a blue mesh. (b) Stereo representation of the residues from the symmetry-related monomer that are involved in stabilization of the extended tail (shown as yellow sticks); the symmetry-related molecule is shown in grey. The electron-density map around the tail (2F _o − F _c contoured at 1.3σ) is shown as a blue mesh.