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Structure of CstF-77 homodimer. (a) CstF-77 is built entirely of α-helices belonging to the HAT-repeat family (labelled α1–α23), with the exception of disordered residues (dotted lines). Only one of the two monomers is coloured from blue to red (N to C terminus). The second monomer is shown in grey. HAT repeats are indicated. (b) Schematic representation of CstF-77 homodimer. The two views are related by a 90° rotation as indicated. (c) Stereoview of CstF-77 homodimer.
