Figure 1 - full size

Figure 1.
Figure 1. a, Stereoview showing the best-fit superposition of the backbone atoms (N, C , and C') of the final 15 structures of the nNOS PDZ−MelR peptide complex. The structures are superimposed against the average structure using the residues 14−98. The MelR peptide (VVKVDSV) is shown in pink. The -strands in the C-terminal extension are in orange, and the rest of the extension is in cyan. b, Superposition of the 15 NMR structures using the 'I and 'II showing the defined structure of the C-terminal extension of the nNOS PDZ domain. c, Ribbon diagram of the nNOS PDZ−MelR peptide complex. The secondary structural elements of the canonical nNOS PDZ domain are labeled following the scheme of the crystal structure of the PSD-95 PDZ domain^7. The MelR peptide is shown in pink, and the C-terminal extension is in yellow. The two C-terminal strands are named 'I and 'II, respectively.