EC 1.1.1.49 Recombinant from E. coli. In 3.2 M ammonium sulphate. Specific activity: 172 U/mg (25oC, pH 7.6, D-glucose-6-phosphate). Contaminants: hexokinase = 0.024 %, lactate dehydrogenase < 0.001 %, myokinase < 0.001 %, NADH oxidase = 0.00011 %, NADPH oxidase = 0.00055 %, 6-phosphogluconate dehydrogenase = 0.000043 %, phosphoglucomutase = 0.00064 %. Stable at 4oC for > 2 years.