Table 2. Crystallization.

Method	Hanging-drop vapour diffusion
Plate type	24-well
Temperature (K)	277
Protein concentration (mg ml−1)	10
Buffer composition of protein solution	20 mM Tris–HCl, 100 mM NaCl, 10% glycerol pH 8.0
Composition of reservoir solution	0.2 M calcium acetate, 0.1 M sodium cacodylate pH 6.5, 18% polyethylene glycol 8000
Volume and ratio of drop	1 µl; 1:1
Volume of reservoir (µl)	200