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CRYSTALLIZATION (Commentary)
ORGANISM
UNIPROT
LITERATURE
purified recombinant apo-enzyme CbiT or in complex with S-adenosyl-L-methionine, hanging drop vapour diffusion method, 25°C, for the apo-enzyme: 5-10 mg/ml protein in 10% w/v PEG 8000, 100 mM MgCl2, and 5 mM Tric-HCl, pH 7.5, 0.002 ml equilibrated against 1 ml of well solution containing 16-22% PEG 8000, 0.2 M MgCl2, 10 mM Tris-HCl, pH 7.5, crystals appear after 1 day, for the binary complex: 1-2 mg/ml protein in 0.5 mM S-adenosyl-L-methionine, 0.1-0.2% PEG 8000, 50 mM MgCl2, 2.5 mM Tris-HCl, pH 7.5, 0.004 ml equilibrated against 1 ml of well solution containing 0.2-0.4% PEG 8000, 0.2 M MgCl2, and 5 mM Tris-HCl, pH 7.5, cryoprotection by soaking in 25% PEG 8000, 0.2 M MgCl2, and glycerol up to 25% w/v, freezing in liquid propane, X-ray diffraction structure determination and analysis at 1.9 A resolution, modeling