Figure 5.

Dynamics properties of the plant defensins Sd5 and Psd1. Quantitative analysis of exchange dynamics in Sd5. ¹⁵N-NMR relaxation dispersion curves were measured at 800 and 600 MHz. Side chains of the residues with amide backbone conformational exchange measured by NMR relaxation dispersion are colored magenta in the NMR structure of Sd5 (PDB code 2KSK) (a). Ribbon representation of Psd1 highlighting the side chains of the residues in conformational exchange in blue and the flexible hinge Gly12 in cyan. Gly12 is the only residue with decreased order parameter, which indicates thermal flexibility (PDB code 1JKZ) (b).