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The elongated conformation of the X-module is buttressed by the three dockerin inserts. Surface (A and B) and schematic (C) representation of the RfCohE-XDoc complex showing the three inserts of the dockerin that support the extended stalklike conformation of the X-module (blue). Inserts 1, 2, and 3 are colored magenta, light orange, and cyan, respectively. The cohesin and dockerin modules are shown in green and red, respectively.
