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Superposition of the dimeric structure of SazCA (PDB code 4X5S, green) with those of SspCA (PDB code 4G7A, magenta) [67] and TaCA (PDB code 4C3T, blue) [62]. TaCA dimer was generated using PISA program (http://www.ebi.ac.uk) [71] on the crystallographic coordinates (PDB entry 4C3T).
