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The models of tertiary structures of IFN-β (shown in green) bound to Ca2+-loaded S100B monomer (A) or dimer (B). Crystal structures of IFN-β and Ca2+-loaded S100B dimer (PDB entries 1AU1 and 5D7F, respectively) are used for the modeling by ClusPro docking server [61]. The model of S100B monomer is built using I-TASSER server [62]. The Ca2+-binding loops are shown in yellow. The numbering of the contact residues (orange-colored) is according to the PDB entries.
