Table 1. Data-collection, processing and refinement statistics.
Wavelength (Å) | 0.9186 |
No. of images | 392 |
Space group | P21 |
Unit-cell parameters (Å, °) | a = 255.4, b = 350.4, c = 271.6, β = 90.34 |
Resolution (Å) | 50–2.7 (2.8–2.7) |
Total No. of reflections | 16673125 |
No. of unique reflections | 1210268 (123000) |
Crystal mosaicity (°) | 0.3–0.5 |
Completeness (%) | 93.1 (94.7) |
R merge † (%) | 13.2 (37.8) |
Multiplicity | 2.6 (2.4) |
〈I/σ(I)〉 | 6.9 (2.4) |
V M (Å3 Da−1) | 2.1 |
R factor‡/R free § (%) | 23.9/23.9 |
R merge = × 100, where Ii(hkl) is the intensity of an individual reflection with indices hkl and 〈I(hkl)〉 is the average intensity of all symmetry-equivalent measurements of that reflection; the summation is over all intensities.
R factor = × 100, where F obs and F calc are the observed and calculated structure-factor amplitudes, respectively.
R free is calculated in the same way as the R factor, except that it uses 5% of the reflection data partitioned from the refinement process.