Table 2. Data-collection statistics at pH 6.5.

Precipitant	Asp	Glu	Arg	Orn	Lys	GlyEE
Growth pH	6.5	6.5	6.5	6.5	6.5	6.5
Unit-cell parameters
a (Å)	78.41	78.76	77.28	78.74	78.60	78.94
c (Å)	37.36	36.82	38.04	37.08	37.01	37.11
Unit-cell volume (Å3)	2.30 × 105	2.28 × 105	2.27 × 105	2.30 × 105	2.29 × 105	2.31 × 105
Resolution (Å)	19.60–1.70	30.71–2.20	31.22–1.90	30.86–1.80	31.22–1.90	19.15–1.40
Wavelength (Å)	0.90	1.54	1.54	1.54	0.90	0.90
Crystal-to-detector distance (mm)	200	100	100	100	200	200
Oscillation angle (°)	2.0	3.0	2.0	2.0	2.0	2.0
Exposure time (s per frame)	1.0	210	210	210	1.0	1.0
Total oscillation range (°)	80	120	100	100	80	80
No. of reflections
Observed	82829	45201	68417	79663	98154	146461
Unique	13325	6200	9256	11203	14715	23381
Completeness (%)	99.9 (100.0)	98.8 (92.9)	97.6 (98.6)	99.1 (94.5)	93.5 (95.9)	99.0 (99.9)
Rmerge†	0.109 (0.276)	0.081 (0.169)	0.068 (0.380)	0.049 (0.201)	0.121 (0.260)	0.115 (0.294)
I/σ(I)	16.1 (6.5)	19.2 (7.5)	19.2 (4.4)	26.9 (7.9)	15.7 (7.3)	14.4 (5.5)

^† R _merge = , where I _i(hkl) is the intensity of the ith observation and 〈I(hkl)〉 is the mean intensity of the reflection.