Stereo view of backbone superposition. The portion of RDC-derived structure (blue) consisting of the helix (N25–E34) and the single
sheet can be superimposed with the corresponding portion (magenta) from the X-ray structure with a backbone RMSD = 1.21 Å. The single
sheet is composed of five strands (Q2–T7, K11–V17, N41–F45, K48–E51 and S65–V70), which can be superimposed with the corresponding
sheet from the X-ray structure (Vijay-Kumar et al. 1987) with a backbone RMSD of 1.17 Å.