1.97.1.9	hanging-drop vapour diffusion method, precipitation by ammonium sulfate, protein solution: 10 mg/ml, 0.3-0.5 M ammonium sulfate, 50 mM piperazine, pH 6.0, reservoir solution: 1.8-2.2 M ammonium sulfate, 100 mM Tris-HCl, pH 8.0-8.9, 293 K, 2-4 weeks, cryoprotection by 25% glycerol, X-ray structure determination and analysis	644814