1.17.7.4 | purified recombinant IspH, sitting drop vapour diffusion method at 20°C, 0.004 ml of 35 /ml protein in 50 mM Tris-HCl, pH 8.0, is mixed with 0.004 ml of reservoir solution containing 100 mM Bis-Tris-HCl, pH 6.5, 200 mM lithium sulfate and 25% PEG 3350, final pH is 6.8, crystal soaking in 2 M lithium sulfate, pH 6.5, before freezing, X-ray diffraction structure determination and analysis at 1.4 A resolution, molecular replacement, modelling |