Extended Data Table 2. X-ray crystallographic data collection and refinement statistics for ShTniQ.

	ShTniQ (PDB 7OXD)
Data collection
Space group	P 21 21 21
Cell dimensions
a, b, c (Å)	41.636 49.875 86.8
α, β, γ (°)	90 90 90
Resolution (Å)	43.40 - 1.3 (1.346 - 1.3)
R merge	0.03864 (0.9239)
I / σI	23.26 (1.84)
Completeness (%)	99.75 (99.72)
Redundancy	6.7 (6.3)
Refinement
Resolution (Å)	43.24 - 1.3
No. reflections	45126 (4426)
Rwork / Rfree	0.1881 (0.2866)/ 0.1952 (0.2872)
No. atoms	1470
Protein	1232
Ligand/ion	2
Water	236
B-factors
Protein	18.97
Ligand/ion	17.19
Water	30.86
R.m.s. deviations
Bond lengths (Å)	0.005
Bond angles (°)	0.92