Table 1. Data-collection statistics.

Values in parentheses are for the highest resolution shell.

	Crystal form 1	Crystal form 2
Crystallization temperature (K)	293	298
Wavelength (Å)	1.5418	0.979
Space group	P1	P65
Unit-cell parameters (Å, °)	a = 96.9, b = 107.6, c = 131.1, α = 111.3, β = 107.3, γ = 90.7	a = b = 70.3, c = 399.7
Resolution limits (Å)	50.0–1.9 (2.0–1.9)	50.0–1.7 (1.8–1.7)
Completeness (%)	94.7 (91.8)	98.3 (89.5)
Unique reflections	255620 (36175)	121422 (16139)
Multiplicity	2.1 (2.0)	5.4 (3.9)
Rmerge	0.107 (0.492)	0.096 (0.485)
Mean I/σ(I)	16.7 (1.8)	10.6 (2.0)