Figure 4.

The kinked TM domain in stereo view was tightly defined within the structure family at a backbone rmsd of 0.40 Å. Despite the 70° kink at the Gly₁₉-Pro₂₀-Gly₂₁-Gly₂₂ sequence, the departure from helical structure is limited to residues Gly₁₉ (red) and Pro₂₀ (green). Structures are aligned to the average backbone structure using the N_H, C_α, and C′ atoms for residues 7–30. Figure generated using PyMOL.⁴⁴