1.8.2.7 | hanging drop vapor diffusion method, using 0.17 M ammonium acetate, 0.085 M sodium citrate, pH 5.6, 25.5% (w/v) PEG 4000, 15% (v/v) glycerol or 0.17 M ammonium sulfate, 0.085 M sodium cacodylate, pH 6.5, 25.5% (w/v) PEG 8000, 15% (v/v) glycerol |