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(a) Crystal structure of IL1β-S1 colored from N-terminus (red) to C-terminus (blue). (b) Overlay of the IL1β-S1 model (green) on the reference 2NVH (red) (c) IL1β-S1 structure colored by temperature factor (blue, low to red, high). The LBT (inserted in the S-loop) is marked by the Tb3+ depicted as a sphere.
