Table 1. Crystallization conditions.

Condition	I	II
Salt	100 mM NaH2PO4, 100 mM KH2PO4	0.5 M (NH4)2SO4
Buffer	100 mM MES pH 6.5	100 mM sodium citrate pH 5.6
Precipitant	2.0 M NaCl	1 M Li2SO4
Crystal dimensions (µm)	400 × 50 × 50	150 × 150 × 250