Table 1. X-ray data-collection statistics.

Values in parentheses are for the last resolution shell.

Resolution (Å)	50–3.2 (3.26–3.20)
X-ray source	BM14, ESRF
Wavelength (Å)	0.97625
Space group	P3121
Unit-cell parameters (Å, °)	a = b = 83.9, c = 131.0, α = β = 90, γ = 120
Observed reflections	84807
Unique reflections	8730 (309)
Completeness (%)	97.3 (76.3)
Multiplicity (%)	9.7
Rmerge (%)†	13.3 (66.9)
Average I/σ(I)	14.1 (1.8)

^† R _merge = , where I_i(hkl) is the ith intensity measurement of reflection hkl and 〈I(hkl)〉 is the average intensity of that reflection.