Crystallization and preliminary X-ray diffraction study of glycerol kinase from the hyperthermophilic archaeon Thermococcus kodakaraensis

Glycerol kinase from the hyperthermophilic archaeon Thermococcus kodakaraensis was crystallized and preliminary crystallographic studies of the crystals were performed. Crystals were grown at 293 K by the sitting-drop vapour-diffusion method. Native X-ray diffraction data were collected to 2.4 Å resolution using synchrotron radiation at station BL44XU of SPring-8. The crystal belongs to the rhombohedral space group R3, with unit-cell parameters a = b = 217.48, c = 66.48 Å. Assuming the presence of two molecules in the asymmetric unit, the V_M value was 2.7 Å³ Da^-1 and the solvent content was 54.1%. The protein was also cocrystallized with substrates and diffraction data were collected to 2.7 Å resolution.