Fig. 5.

Superposition of the NMR and crystal structures of a CTD monomer of SARS-CoV NP. The mean NMR structure of a CTD monomer (blue) is superposed on the corresponding crystal structure spanning residues 248–365 (a) (red; PDB code 2cjr)⁵ and on that encompassing residues 270–370 (b) (light green; PDB code 2gib).⁷ In (a), the two structures are superposed on the regions of residues 260–319 and 333–358, where the backbone RMSD between them is 1.45 Å. In (b), the two structures are superposed on the regions of residues 274–319 and 333–358, where the backbone RMSD is 1.26 Å.