Table 1. Statistics for data collection and model refinement.

Values in parentheses are for the last shell.

Space group	P21
Unit-cell parameters (Å, °)	a = 67.8, b = 74.6, c = 84.7, β = 112.1
Resolution limits (Å)	30.8–2.2 (2.3–2.2)
〈I/σ(I)〉	15.4 (4.7)
No. of reflections	272397 (35542)
No. of unique reflections	37195 (5261)
Multiplicity	7.3 (6.8)
Rmerge† (%)	10.7 (55.7)
Completeness (%)	93.6 (91.4)
Rcryst‡	0.18 (0.19)
Rfree§	0.24 (0.26)
Correlation coefficients
Fo − Fc	0.946
Fo − Fc (free)	0.911
R.m.s. deviations
Bond lengths (Å)	0.020
Bond angles (°)	1.812
Mean B factors (Å2)
Protein	16.1
All atoms	24.5
Model composition
Monomers	2
Residues	798
Water molecules	211

^† R _merge = , where I _i(hkl) and 〈I(hkl)〉 are the intensity of measurement i of I and the mean intensity of the reflection with indices hkl, respectively.

^‡ R _cryst = , where F _obs are observed and F _calc are calculated structure-factor amplitudes.

^§The R _free set used 5% of randomly chosen reflections.