Table 2. Structure solution and refinement.

Resolution range (Å)	47.01–1.35
R factor	0.162
Free R factor	0.183
R.m.s.d., bond lengths (Å)	0.027
R.m.s.d., bond angles (°)	2.432
No. of protein atoms	1230
No. of water molecules	219
Average B factor (Å2)
Protein	21.7
Water	35.6
Ramachandran analysis
No. of residues in favoured regions	153
No. of residues in disallowed regions	0