Table 1.

Data collection and refinement statistics.

Data collection and phasing
Crystal symmetry	P212121
Unit cell	a= 74.4
	b= 72.5
	c= 96.1
	α=β=γ=90°
Resolution (Å)	50−2.0
Completeness (%)	97.1 (79.6)
Multiplicity	3.6 (1.9)
Rmerge (%)a	3.4
‹I/σI›	30.1 (7.0)
Mosaicity (°)	0.299
Refinement
Resolution (Å)	50−2
Reflections	34,740
Rcrystb / Rfree (%)	18.9/ 24.9
Rms Δ bondsc (Å)	0.013
Rms Δ anglesc (°)	1.5
Average B-factor (Å2)	14.4
Main-chain dihedral angles (%)
Most favored	90.8
Allowed	9.2

Parentheses denote values for the highest resolution shell.

^a ${\text{R}}_{\text{merge}}=\Sigma |I-〈I〉|/\Sigma I$; I, intensity.

^b ${\text{R}}_{\text{cryst}}=\Sigma |F_o-F_{\mathrm{calc}}|/\Sigma F_o$; F_o, observed structure-factor amplitude; F_calc, calculated structure-factor amplitude.

^cRoot mean square deviations from ideal values.