Table 1. Data-collection statistics.

Values in parentheses are for the highest resolution shell (2.8–2.7 Å).

X-ray source	SPring-8 BL41XU
Space group	P41 or P43
Unit-cell parameters (Å, °)	a = b = 49.96, c = 103.20, α = β = γ = 90
Wavelength (Å)	1.0000
Resolution range (Å)	50.00–2.70 (2.80–2.70)
Total reflections	26984
Unique reflections	6807
Rmerge† (%)	4.8 (25.1)
Completeness (%)	97.3 (83.1)
〈I/σ(I)〉	17.3 (4.5)
Redundancy	4.0 (3.1)
Crystal mosaicity (°)	0.458

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