Table 1. Data-collection statistics.

Values in parentheses are for the last shell.

Beamline	Spring-8 BL26B1
Wavelength (Å)	1.0
Resolution range (Å)	50.0–3.0 (3.05–3.00)
Space group	P41
Unit-cell parameters (Å)	a = b = 82.2, c = 233.2
Total No. of reflections	1169323
No. of unique reflections	30477
Completeness (%)	98.2 (95.9)
Molecules per asymmetric unit	4
Solvent content (%)	43.5
Average I/σ(I)	10.6 (2.4)
Rmerge† (%)	11.5 (38.2)
Rp.i.m.‡ (%)	9.5 (35.5)
Multiplicity	4.2 (3.1)

^† R _merge = .

^‡ R _p.i.m. = , where I_i(hkl) is the intensity of reflection hkl, is the sum over all reflections, is the sum over i measurements of reflection hkl and 〈I(hkl)〉 is the weighted average intensity of all observations i of reflection hkl.