Table 1. Data-collection and refinement statistics.
| Source | PXIII beamline, Swiss Light Source |
| Wavelength (Å) | 1.00 |
| Space group | P41212 |
| Unit-cell parameters (Å) | a = b = 134.3, c = 135.2 |
| Molecules in the asymmetric unit | 3 |
| Resolution range (Å) | 47.47–2.45 (2.59–2.45) |
| No. of observed reflections | 421161 (47700) |
| No. of unique reflections | 45262 (6031) |
| Completeness (%) | 98.8 (92.1) |
| Multiplicity | 9.3 (7.9) |
| Wilson B factor (Å2) | 37 |
| 〈I/σ(I)〉 | 15.4 (2.5) |
| R sym † | 0.108 (0.751) |
| R work/R free ‡ | 0.1934/0.2156 |
| R.m.s.d. bonds (Å) | 0.010 |
| R.m.s.d. angles (°) | 1.18 |
| Overall B factors (Å2) | |
| Protein | |
| Chain A | 41.4 |
| Chain B | 46.5 |
| Chain C | 49.2 |
| Water molecules (185) | 43.7 |
| Glycerol (2) | 57.2, 50.8 |
| Ramachandran plot (%) | |
| Favoured | 96.8 |
| Allowed | 3.2 |
| Disallowed | 0.0 |
| PDB code | 4aow |
†
R
sym = 
, where I
i(hkl) is the intensity of the ith observation of reflection hkl and 〈I(hkl)〉 is the average over all observations of reflection hkl.
‡
R
work = 
, where F
obs and F
calc are the observed structure-factor amplitudes and the calculated structure-factor amplitudes of the model, respectively. R
free is the same as R
work but for 5% of reflections not included in the model refinement.