TABLE 1.

Data collection and refinement statistics. Values in parentheses are for the highest resolution shell

Space group	I222
Unit cell parameters (Å)	a = 56.27, b = 122.89, c = 126.61, α = β = γ = 90
Wavelength (Å)	0.843
Resolution (Å)	15–1.60 (1.65–1.60)
No. of unique reflections	55,080
Mean I/σ(I)	17.3 (3.6)
Completeness (%)	94.5 (94.3)
Redundancy	4.5 (3.9)
Rsym (%)	4.8 (39.6)
Refinement
Resolution range (Å)	15–1.6 (1.64–1.60)
Rwork	0.139 (0.197)
Rfree	0.275 (0.293)
No. of protein atoms	2993
No. of water atoms	266
No. of heterogenic atoms	57
Mean temperature factor B (Å2)	28.69
Root mean square deviation from ideal values
Bond lengths (Å)	0.019
Bond angles (°)	1.985
Ramachandran plot
Favored region (%)	97.11
Allowed region (%)	2.10
Outlier region (%)	0.79