Table 1. Data-collection statistics.

Values in parentheses are for the last resolution shell.

	Bipyramidal crystal	Rectangular crystal
ESRF beamline	ID23-2	BM16
Wavelength	0.87260	0.99992
Space group	P43212	P21
Unit-cell parameters
a (Å)	62.53	57.94
b (Å)	62.53	142.1
c (Å)	277.4	153.9
α (°)	90	90
β (°)	90	90.52
γ (°)	90	90
Resolution (Å)	1.55 (1.63–1.55)	1.80 (1.90–1.80)
Rmerge†	0.146 (0.761)	0.085 (0.489)
Rp.i.m.‡	0.040 (0.280)	0.046 (0.258)
Total No. of observations	1150089 (94995)	844701 (111617)
Total No. of unique reflections	81489 (11687)	210751 (27382)
Mean I/σ(I)	14.2 (2.3)	12.1 (2.8)
Completeness (%)	100.0 (100.0)	91.9 (81.8)
Multiplicity	14.1 (8.1)	4.0 (4.1)

^† R _merge = .

^‡ R _p.i.m. = − .