The relaxation-associated contacts satisfying the conditions Pij(2 Å, 3 Å) < 0.3 and Pij(0 Å, 2 Å) > 0.7 are shown. Residues included in the contacts are represented by spheres; residue numbers are indicated at the left. Green, red, and blue correspond to N-terminal, 50-kDa, and C-terminal subdomain, respectively.