Figure 1
Crystal structure of c5321 solved at 1.74 Å resolution. A. Side view of the super-helix, with a Sel1-like-repeat (SLR) unit circled and the Mg2+-binding site between repeats 3 and 4 indicated in pale green. Helix-1 of the repeats is coloured in violet and helix-2 in green. N-terminal and C-terminal (likely capping) helices, as well as the C-terminal tail are represented in grey. B. Top-down view (along the vertical axis) from the C-terminus of the super-helix, depicting its concave (formed by the first helices of the repeats) and convex (formed by the second helices) surfaces.