Table 2. Crystallization conditions.

Method	Vapour diffusion, sitting drop
Plate type	MRC 2-drop 96-well plate (Douglas Instruments)
Temperature (K)	277.15
Protein concentration (stock) (mg ml−1)	13.7
Buffer composition of protein solution	20 mM Tris pH 8.0
Composition of reservoir solution	A, 0.2 M ammonium formate pH 6.6, 20%(w/v) PEG 3350; B, 0.1 M potassium thiocyanate, 30%(w/v) PEG MME 2000
Volume and ratio of drop	0.3 µl, 3:1 protein stock:reservoir solution
Volume of reservoir (µl)	100