Table S1.

Data collection and refinement statistics

PDB ID code	5I7N
Beamline	ESRF-BM30
Wavelength, Å	0.979
Space group	P 41 21 2
Cell dimensions	83.32, 83.32, 124.39, 90, 90, 90
Resolution, Å	42.77–1.65 (1.709–1.65)
Rmeas, %	9.46 (101.7)
<I/σ(I)>	15.91 (2.18)
Completeness, %	98.64 (97.56)
Redundancy	6.4 (6.6)
Rwork/Rfree, %	15.99 (22.65)/18.51 (26.02)
No. atoms
Protein	2,558
Water	529
Average B values, Å2
Protein overall	24.1
Water	35.5
rmsd
Bond lengths, Å	0.014
Bond angles, °	1.42
Ramachandran favored, %	98
Ramachandran allowed, %	2

The values in parentheses are for the last resolution shell.