Table 3. Structure-solution and refinement statistics.

Values in parentheses are for the outer shell.

Resolution range (Å)	61.64–1.84 (1.88–1.84)
Completeness (%)	100.0
No. of reflections, working set	53453 (2634)
No. of reflections, test set	2857 (130)
Final R cryst	0.156 (0.203)
Final R free	0.176 (0.215)
No. of non-H atoms
Protein	3420
Solvent	458
Total	3878
R.m.s. deviations
Bonds (Å)	0.008
Angles (°)	1.216
Average B factors (Å2)
Protein	28.4
Ramachandran plot
Most favoured (%)	98.9
Allowed (%)	100