TABLE I.
Comparison of thaumatin diffraction obtained from a 1° wedge recorded using an X-ray plate or the crystallography chip.
| X-ray plate | Crystallography chip | |
|---|---|---|
| Crystal parameters | ||
| Dominant size in sample (μm) | 40–50 | 40–50 |
| Feature width on chip (μm) | NA | 50 |
| Data collection | ||
| Rotation range: total, increment | 1 deg, 0.1 deg | 1 deg, 0.1 deg |
| Exposure time (seconds per image) | 0.5 | 0.5 |
| Number of images | 10 | 10 |
| Detector distance (mm) | 399.28 | 271.31 |
| Wavelength (Å) | 0.9687 | 0.9687 |
| Resolution, low (Å) | 21.48 | 16.10 |
| Resolution, high (Å) | 1.51 | 1.55 |
| Number of reflections | 1779 | 2661 |
| Number of reflections, unique | 1741 | 2570 |
| Completeness (%) | 4.3 | 6.8 |
| Multiplicity | 1.022 | 1.035 |
| Rmeas | 0.144 | 0.043 |
| ⟨I/σ(I)⟩ | 25.0 | 22.20 |
| Merging space group | P 4 2 2 | P 4 2 2 |
| Unit cell parameters: a = b, c (Å) | 58.39, 151.09 | 58.37, 151.11 |