Table 2.
Experimental restraints | ||
Intraresidue NOEs | 41 | |
Sequential NOEs | 23 | |
Medium and long range NOEs | 19 | |
(i,i+2; i,i+3; and i,i+4) | ||
Other NOEs | 8 | |
Hydrogen bonds (H-O distance) | 7 | |
Φ angles | 9 | |
Ψ angles | 8 | |
Total | 115 | |
Mean r.m.s.d.a from experimental restraints | <SA> ± SDb | |
Distance restraints (Å) | 0.022±0.004 | |
Dihedral angle (°) | 0.054±0.123 | |
Mean r.m.s.d. from ideal geometry | <SA> ± SD | |
Bonds (Å) | 0.001±0.000(4) | |
Angles (°) | 0.473±0.029 | |
Impropers (°) | 0.374±0.038 | |
Ramachandran statistics from PROCHECK-NMRc | ||
Residues in most favored α helical region | 100 % | |
r.m.s.d. from the average structure (Å) | ||
Backbone N, Cα, C | 0.296 | |
All heavy atoms | 1.371 | |
Pairwise r.m.s.d. analysis | ||
Average backbone pairwise r.m.s.d. (Å) | 0.420 (±0.122) | |
Average non-hydrogen atom pairwise r.m.s.d. (Å) | 1.875 (±0.264) | |
X-PLOR potential energies (kcal/mol) | ||
<SA> ± SD | (<SA>r)d | |
Eoverall | 15.039±2.489 | 14.774 |
Ebond | 0.378±0.147 | 0.408 |
Eangle | 11.095±1.446 | 10.971 |
Eimpropers | 1.969±0.424 | 1.809 |
Evdw | 0.328±0.532 | 0.0 |
ENOE | 1.248±0.522 | 1.585 |
Ecdih | 0.018±0.072 | 0.0 |
Root mean square deviation.
Standard deviation.
Ref. [41]
200 cycles of conjugate gradient minimization were used. All of the NMR constraints were enforced during the energy minimization of the average coordinates.