Table 1.

Statistics of x-ray data collection for crystals of the RNase A dimer

	RNase A dimer	RNase A dimer	Dimer + Congo Red
Cryogenic protectant	—	25% glycerol	25% glycerol
Temperature	Room temperature	Cryo	Cryo
Wavelength, Å	1.54	1.54	1.54
Resolution range, Å	40–2.1	40–2.8	40–2.5
Total reflections	30,428	14,830	20,706
Unique reflections	16,601	6,766	9,588
Completeness, %	96.0	95.9	97.7
Rsym*, %	9.7	10.1	8.7
Space group	P32	P32	P32
Unit cell constants	a = b = 57.0 Å	a = b = 56.3 Å	a = b = 56.2 Å
	c = 81.4 Å	c = 80.7 Å	c = 80.3 Å

^*R_sym = Σ_hkl Σ_i |I(hkl)_i − 〈I(hkl)〉|/Σ_hkl Σ_i 〈I(hkl)_i〉.