Table II.
Structural Statistics for 20 Final NMR Structures
| Distance restraints | |
| Total NOE | 1232 |
| Short-range | 320 |
| Medium-range | 411 |
| Long-range | 501 |
| Hydrogen bond restraintsa | 36 |
| Dihedral angle constraintsb | |
| φ | 44 |
| ψ | 44 |
| Mean CYANA target function | 0.98 |
| Ramachandran plot statistics (%) | |
| Most favored regions | 78.5 |
| Additionally allowed regions | 20.3 |
| Generously allowed regions | 1.0 |
| Disallowed regions | 0.2 |
| RMSDs to mean structure (residues) Å | |
| Backbone atoms (N, Cα, C′, O) | 0.48 ± 0.15 |
| All heavy atoms | 0.99 ± 0.15 |
a
Hydrogen-bond constraints were derived from H-D exchange experiments [Fig. 3(C)] and implemented as two upper (HN-O 2.5 Å, N-O 3.6 Å) and two lower (HN-O 1.5 Å, N-O 2.4 Å) distance constraints for each hydrogen bond.
b
Backbone φ and ψ dihedral constraints determined with TALOS.