Table 1. Refinement statistics for crystal structure.

Space group	I4
Unit cell (Å)	a = b = 102.635 c = 103.392
Resolution (Å) (highest resolution bin)	20.06–2.30 (2.42–2.30)
Protein residues (atoms) chain A / B	148 (1254) / 143 (1201)
Water molecules	147
Stearic acid / Tris residues	1 / 2
Rwork (%)	18.57
Rfree (%)	23.15
R.m.s.d. bond lengths (Å) / angles (°)	0.01 / 1.09
Average isotropic thermal parameters (Å)
Main chain (side chain) atoms Chain A/B	41.24 (48.52) / 42.00 (48.46)
Water molecules	50.60
Stearic acid / Tris	50.74 / 58.84
Ramachandran analysis
% Favoured regions	99.3
% Outliers	0