Figure 5.

Stereoviews of the polypeptide backbone fold in OmpX. (a) Superposition of the 20 dyana conformers that were selected to represent the NMR structure of OmpX. The superposition is for pairwise global best fit of the N, C^α, and C′ backbone atoms of the β-sheet amino acid residues in conformers 2–20 with the corresponding atoms in the conformer with the smallest residual target function value (Table 1). (b) Comparison of the mean NMR structure (blue) and the x-ray crystal structure (red) after superposition as in a. Periplasmatic and extracellular spaces are indicated according to ref. 23. The figure was prepared with the program molmol (43).