2.1.1.282 | purified recombinant PaTrm5a in apo form and in complex with various SAM analogues, mixing PaTrm5a with 1.5 mM SAH or SAM at a protein: ligand molar ratio of 1:3, sitting drop vapor diffusion method, mixing 20 mg/ml protein solution in a 1:1 ratio with well solution containing w/v PEG 3350, 100 mM HEPES, pH 7.5, 100 mM Ca(OAc)2 and 100 mM KCl., method optimmization, 25°C, X-ray diffraction structure determination and analysis at 1.76-2.20 A resolution |