Table 2. Crystallization.

Method	Hanging-drop vapour diffusion
Temperature (K)	288
Protein concentration (mg ml−1)	45
Buffer composition of protein solution	50 mM Tris–HCl pH 8, 50 mM NaCl
Reservoir solution	1.4 M sodium citrate tribasic dihydrate, 0.1 M HEPES-Na pH 7.5, 4% 1,3-butanediol
Volume and ratio of drop	4 µl, 2:2
Volume of reservoir (µl)	500