Table 1.

X-ray diffraction data

Data collection
Wavelength, Å	1.03	1.55
Resolution range, Å	40–2.3	40–2.3
Rmerge	5.8 (25.0)	7.5 (27.0)
I/σ	29	30
Completeness, %	99.5	99.5
Figure of merit	0.44
Refinement
Resolution, Å	40–2.3
Rwork	22.4
Rfree	29.4
No. of reflections
Working set	19,321
Test set	2,133
No. of heteroatoms
Solvent	132
Ion	6
Other	Tris
Deviations from ideal geometry
Bond lengths, Å	0.007
Bond angles, °	1.22
Average B factors
Protein	44.13
Solvent	44.5