Table 1. Data-collection and processing statistics.

Values in parentheses are for the highest resolution shell.

Space group	P21
Unit-cell parameters (Å, °)	a = 40.9, b = 33.3, c = 34.8, β = 90.3
Wavelength (Å)	1.5418
Resolution range (Å)	50.0–1.8 (1.86–1.80)
Observed reflections	60734
Unique reflections	16012
Completeness (%)	93.8 (90.5)
〈I/σ(I)〉	13.5 (7.0)
Rmerge† (%)	5.1 (19.1)

^† R _merge = for the intensity (I) of i observations of reflection h.