Table 1. Data-collection statistics for WrbA holoprotein crystals.

Values in parentheses are for the highest resolution shell.

	WrbA–FMN†	WrbA–FMN‡
Space group	P43212	P41212
Crystal system	Primitive tetragonal	Primitive tetragonal
Unit-cell parameters (Å)	a = b = 94.35, c = 175.38	a = b = 61.13, c = 168.38
Resolution range (Å)	35.0–2.6 (2.69–2.60)	35.0–2.0 (2.04–1.99)
Solvent content (%)	73	34
No. of collected images	180	270
Oscillation angle (°)	1	1
No. of measured reflections	179066	142741
No. of unique reflections	24986	20763
Redundancy	7.2 (6.7)	6.9 (6.5)
Completeness (%)	98.9 (98.1)	90.8 (84.1)
Rmerge§	0.14 (0.62)	0.09 (0.51)
〈I/σ(I)〉	12.35 (2.64)	16.94 (3.42)
Mosaicity (°)	0.38	0.84
No. of molecules per ASU	2	2

^†WrbA holoprotein crystal form I grown from 25% ethylene glycol.

^‡WrbA holoprotein crystal form II grown from 20% PEG 8000, 0.1 M Tris–HCl pH 8.0. Similar data were obtained for crystals grown from 30% PEG 4000, 0.1 M Tris–HCl pH 8.5, 0.2 M MgCl₂ (data not shown).

^§ R _merge = , where I is an individual intensity measurement and 〈I〉 is the average intensity for this reflection. The value of R _merge was calculated by summation over all data.