EC 2.7.1.1 From yeast. In 3.2 M ammonium sulphate. Specific activity: 140 U/mg (25°C, pH 7.4, glucose). Contaminants: phosphoglucose isomerase < 0.1 %; glutathione reductase < 0.05 %; phosphogluconate dehydrogenase < 0.005 %; phosphoglucomutase < 0.01 %; glucose 6-phosphate dehydrogenase < 0.01 %; ATPase < 0.003 %. Stable at 4°C for > 4 years.
