Fig. 2.

Secondary structures of SipD^39–343 based on the (A) C^α, (B) C^β and (C) C’ secondary NMR chemical shifts. The secondary structures of the SipD^39–343 crystal are also shown and are denoted by arrow (beta strand), wavy line (helix); solid line (loop), and broken line (disordered loop). Residues 118–133 lacked electron density in the SipD^39–343 crystal.