Table 1. Data-collection and refinement statistics.

Values in parentheses are for the outermost resolution shell.

Space group	C2221
Unit-cell parameters (Å, °)	a = 68.03, b = 149.60, c = 74.23, α = β = γ = 90
Matthews coefficient (Å3 Da−1)	2.73
Solvent content (%)	55
No. of molecules in the asymmetric unit	1
Wavelength (Å)	1.005
Light source	SSRF BL17U, U25
Detector	MX225
Temperature (K)	100
Resolution range (Å)	50–2.27
No. of observed reflections	128164
No. of unique reflections	17797
Completeness (%)	99.3 (99.0)
〈I/σ(I)〉	13.9 (1.82)
Multiplicity	7.2 (7.4)
R merge †	0.119 (0.446)

^† R _merge = , where I_i(hkl) is the intensity of an individual measurement of the reflection and 〈I(hkl)〉 is the mean intensity of the reflection.