Table 3. Data collection and processing.

Diffraction source	Beamline BM14, ESRF
Wavelength (Å)	0.978
Temperature (°C)	−173
Detector	MAR scanner 345 mm plate
Crystal-to-detector distance (mm)	183.3
Rotation range per image (°)	1
Total rotation range (°)	360
Exposure time per image (s)	1
Space group	P21
a, b, c (Å)	50.18, 121.07, 82.43
α, β, γ (°)	90, 93.58, 90
Mosaicity (°)	0.3
Resolution range (Å)	50–1.9 (1.93–1.90)
Total No. of reflections	253188
No. of unique reflections	75815
Completeness (%)	97.8 (99.5)
Multiplicity	3.3 (3.2)
〈I/σ(I)〉	21.9 (2.16)
R r.i.m.	0.075 (0.651)
Overall B factor from Wilson plot (Å2)	30.4