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The structure of IL-1β, IL-1R1 and IL-1RAP complex (PDB Code_Chains: 4dep_DEF). These are all-beta proteins. There are three interfaces in the complex: one between IL-1RAP/IL-1R1, and the others between IL-1B/IL-1R1 and IL-1B/IL-1RAP. Atoms of interacting residues are represented as balls in order to highlight the interface regions.
