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X-ray crystal structures solved by Ca-SAD phasing. (a) Linear domain map of MpIBP drawn to scale. The RII repeats are colored cyan, the RIII_1–4 domains are colored blue and RIII_5 is colored green, while RV is colored magenta. (b) Expanded view of the linear domain map colored as in (a). (c) Structures of the RII monomer (cyan), RIII_1–4 (blue), RIII_5 (green) and RV (magenta) are shown in cartoon representation with the anomalous substructure Ca2+ atoms depicted as green spheres.
