TABLE 2.
Refinement statistics
| R factor = Σ∥Fo| − |Fc∥/Σ|Fo| where |Fo| and |Fs| are the observed and calculated structure factors, respectively. | |
| Free R-factor is the same as R-factor determined for the 10% of the reflections excluded from refinement. | |
| Resolution (Å) | 15–2.5 |
| R-factor | 24.3 |
| Rfree | 27.7 |
| Number of atoms | 549 |
| Number of water molecules | 21 |
| Average B-factor, RNA atoms (Å2) | 55.8 |
| r.m.s. deviation bond lengths (Å) | 0.006 |
| r.m.s. deviation bond angles (°) | 1.1 |
