Table 1 Crystallographic data and model refinement statistics.

Data collection

Space group

I 23

I 23

Cell dimensions

   a, b, c (Å)

135.1, 135.1, 135.1

135.4, 135.4, 135.4

   α, β, γ (°)

90, 90, 90

90, 90, 90

Wavelength

1.1000

0.9794

Resolution (Å)^b

50.0–2.2 (2.24–2.2)

50.0–2.5 (2.59–2.5)

R_merge (%)^b

6.7 (42.4)

9.7 (43.7)

I/σ (I)^b

39.1 (8.6)

18.7 (6.3)

Completeness (%)^b

99.3 (100.0)

98.6 (100.0)

Redundancy^b

21.6 (22.0)

22.7 (23.0)

Refinement

Resolution (Å)

50.0–2.2

No. reflections

19,088

R_work/R_free

17.4%/23.4%

No. atoms

   Protein

2085

   Ligand/ion

2

   Water

272

B-factors

34.3

R.m.s deviations

   Bond lengths (Å)

0.03

   Bond angles (°)

2.4