Table 2. Structure solution and refinement.

Resolution range (Å)	45.86–2.50
Completeness (%)	92.2
σ Cutoff	F > 4.450σ(F)
No. of reflections, working set	12128
No. of reflections, test set	596
R cryst †	0.258
R free ‡	0.284
No. of non-H atoms
Protein	2917
Water	68
R.m.s. deviations
Bonds (Å)	0.004
Angles (°)	1.13
Average B factors (Å2)
Protein	32.9
Water	26.8
Ramachandran plot
Most favoured (%)	93.73
Allowed (%)	6.27

^† R _cryst = .

^‡ R _free was calculated using randomly selected reflections (5%).