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Overview of S100A4 in complex with the 45-residue-long NMIIA tail fragment along the twofold symmetry axis of the dimer. S100A4 subunit A and B are shown in green and blue, respectively, while NMIIA peptide in yellow (residues 1893–1913) and orange (residues 1914–1935), and Ca2+ ions are gray. The main secondary structural elements are indicated.
