Table 2.

Refinement statistics

Resolution range, Å	30.0–2.5
Protein atoms, no.	4,870
Water molecules, no.	130
rms deviation bond lengths, Å	0.009
rms deviation bond angles, °	1.446
R factor*	0.225
Free R factor (5% of data)	0.253

^*R = ∑_hkl ∥F_obs| − |F_calc∥/∑_hkl |F_obs|.