Figure 3.

Crystal structure comparison of the single-chain α345 (this study) and α121 NC1 trimers (PDB code: 6mpx) (5). The side view (A) and top view (B) of the superposition of α345 and α121 shown as stereopairs with the wireframe backbone. The α345 NC1 trimer coloring is red for α3, blue for α4, and green for α5. The α121 NC1 trimer coloring is yellow for α1 and violet for α5. C, the top slab of the top view showing the superposition of α345 (white) and α121 (black) shown as a stereopair with a wireframe backbone. Artificial linkers between chains are shown in red.