2.1.1.173 purified recombinant His6-tagged RlmL, hanging drop vapour diffusion method, mixing of 0.002 ml of 20 mg/ml protein in 20 mM Tris-HCl, pH 8.0, S-adenosyl-L-homocysteine-saturated, and 200 mM NaCl, with 0.002 ml of reservoir solution containing 0.1 M HEPES, pH 7.0, and 12% w/v PEG 8000, and with 0.001 ml of 30%(w/v) n-octanoylsucrose solution, addition of 2 mM S-adenosyl-L-methionine, equilibration against 0.5 ml of reservoir solution, method optimization, X-ray diffraction structure determination and analysis at 2.2 A resolution 718495