Table 2. Refinement statistics.

Values in parentheses are for the highest resolution shell.

Resolution	25–1.7 (1.74–1.70)
No. of reflections (work + test)	8986
R	0.196 (0.30)
Rfree	0.217 (0.29)
No. of residues	64
No. of water molecules	81
Total no. of atoms	606
R.m.s.d. bond lengths (Å)	0.012
R.m.s.d. bond angles (°)	1.40
Mean B (Å2)	41.3
Ramachandran statistics†, residues in (%)
Core region	96.1
Additionally allowed region	3.9
Generously allowed region	0.0
Disallowed region	0.0

^†Calculated using the program PROCHECK (Laskowski et al., 1993 ▶).