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Site-specific CSPs for binding of zinc to apo-S100A12 (left) and Ca2+-S100A12 (right). Cα, NH, and Cβ perturbations are colored pink, yellow, and blue, respectively. The secondary structure of the apoprotein determined from the crystal structure (PDB entry 2WCF) is displayed at the top: α-helices (blue bars), β-strands (yellow arrows), and loop regions (cyan lines). The dashed horizontal lines represent CSPs of 0.15 and 0.3 ppm for Cα and Cβ and 0.50 and 1.00 ppm for NH.
