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ZQ flip rates for different NH – H distances, computed from standard dipolar relaxation equations. The typical rates for an NH in a helix of protein was computed from the coordinates of the protons surrounding NH of residue 280 in the PDB file 3HSC.
| Distance | τc | ZQ Flip rate | |
|---|---|---|---|
| Å | ns | s−1 | |
| NH-NH pair | 2.8 | 20 | 2.23 |
| NH-NH pair | 2.8 | 40 | 4.46 |
| NH in helix of Perdeuterated protein |
All NH within 5 Å | 20 | 8.47 |
| NH in helix of proteated protein |
All protons within 5 Å |
20 | 24.2 |
