Table 1. Crystallographic data and refinement statistics.

Data collection	pdb-code: 2IWI
Space group	H3
Cell dimensions [Å]	a = 154.770, b = 154.770, c = 78.600
Resolution [Å]	2.8
Unique reflections	16017
Completeness**	99.69 (95.2)
Rmerge	4.9%
I/σ**	21.0 (2.1)
Refinement
Rwork (Rfree *) (%)	24.4/28.9
Rmsd bond length [Å]	0.012
Rmsd bond angle [o]	1.265
Average B-factor (Å2)	35.2
Protein atoms	3687
Other	95
Ramachandran
allowed [%]	91.1
generously allowed [%]	8.9
dissallowed [%]	0

^*using randomly selected 5% of data.

^**values in last shell shown in brackets.