Table 4. Structure solution and refinement.

Values in parentheses are for the outer shell.

Resolution range (Å)	33.77–1.83 (1.94–1.83)
Completeness (%)	98.9 (97.3)
No. of reflections, working set	7957 (1303)
No. of reflections, test set	881 (140)
Final Rcryst	0.1851 (0.2456)
Final Rfree	0.2457 (0.2988)
No. of non-H atoms
Protein	886
Ion	9
Water	79
Total	974
R.m.s. deviations
Bond lengths (Å)	0.007
Angles (°)	0.773
Average B factors (Å2)
Protein	24.36
Ion	24.13
Water	27.17
Ramachandran plot
Most favored (%)	100.0
Allowed (%)	0.0
Outliers (%)	0.0