Table 1. X-ray data-collection and refinement statistics.

Values in parentheses are for the highest resolution bin.

Space group	C2221
Unit-cell parameters (Å, °)	a = 36.514, b = 146.685, c = 162.159, α = β = γ = 90.0
Wavelength (Å)	1.54178
Temperature (K)	100
Resolution (Å)	25–1.5 (1.6–1.5)
Unique reflections	70692 (12550)
Observed reflections	434755 (49823)
Rint†	0.0446 (0.1495)
Average multiplicity	6.2 (4.0)
〈I/σ(I)〉	24.7 (24.7)
Completeness (%)	99.6 (98.5)
R/Rfree	0.143 (0.198)/0.178 (0.251)
No. of protein atoms	3286
No. of water molecules	561
No. of other atoms	133
R.m.s.d. from ideal bond lengths‡ (Å)	0.029
R.m.s.d. from ideal bond angles‡ (°)	2.422
Wilson B factor (Å2)	12.5
Average B factor for protein atoms (Å2)	11.9
Average B factor for water molecules (Å2)	27.5
Ramachandran plot statistics§ (%)
Allowed	99.8
Favored	95.1
Outliers	1 [Asn153, chain B]

^† R _int = , where I _i(hkl) is the intensity of an individual reflection and 〈I(hkl)〉 is the mean intensity of a group of equivalents; the sums are calculated over all reflections with more than one equivalent measured.

^‡Engh & Huber (1991 ▶).

^§Chen et al. (2010 ▶).