Table 1. X-ray data-collection and processing statistics.

Values in parentheses are for the highest resolution shell.

Space group	I4122
Unit-cell parameters (Å)	a = b = 126.6, c = 190.9
Wavelength (Å)	1.000
Resolution (Å)	50.00–2.20 (2.28–2.20)
Unique reflections	39412 (3870)
Completeness (%)	100 (100)
Multiplicity	14.2 (14.0)
Rmerge† (%)	6.9 (25.4)
Mean I/σ(I)	57.0 (11.7)

^† R _merge = .