Table 2. Crystallization.

Method	Vapour diffusion
Plate type	VDX plate (Hampton Research)
Temperature (K)	293
Protein concentration (mg ml−1)	3.3
Buffer composition of protein solution	100 mM Tris–HCl pH 8.2, 150 mM NaCl, 1 mM dithiothreitol, 7.7 mM AMP-PNP, 7.7 mM L-glutamic acid, 7.7 mM magnesium sulfate
Composition of reservoir solution	100 mM bis-tris propane pH 7.0, 210 mM sodium sulfate, 16% PEG 3350
Volume and ratio of drop	2 µl, 1:1 ratio
Volume of reservoir (µl)	500