Table 2. Crystallization of C4.4A-D1D2.

Method	Sitting-drop vapour diffusion
Plate type	24-well
Temperature (K)	293
Protein concentration (mg ml−1)	10
Buffer composition of protein solution	20 mM Tris pH 7.5, 100 mM NaCl
Composition of reservoir solution	22.5%(w/v) PEG 4000, 0.1 M citric acid pH 3.6
Volume and ratio of drop	1:1
Volume of reservoir (ml)	1