Table 2. Refinement and model statistics.

Values in parentheses are for the outermost resolution shell.

Resolution (Å)	47.22–2.35 (2.69–2.35)
Rcryst†	23.7 (35.3)
Rfree‡	28.2 (42.9)
R.m.s.d. bond lengths (Å)	0.009
R.m.s.d. bond angles (°)	1.263
Average B parameter (Å2)	50.4
No. of atoms in model	960
Ligand	Citrate
No. of solvent molecules	17
MolProbity Ramachandran analysis
Favored region (%)	87.5
Allowed region (%)	9.82
Outliers (%)	2.68
PDB code	3s9k

^† R _cryst = 100 × , where F _obs and F _calc are the observed and calculated structure factors, respectively.

^‡ R _free was determined using 9.5% of the data.