Other Notes
It has been reported that glucose-6-phosphatase, inorganic pyrophosphatase, and pyrophosphate glucose phosphotransferase are associated with a single protein that catalyzes three different reactions:
a) glucose 6-phosphate + H2O → glucose + Pi
b) PPi + H2O → 2 Pi
c) glucose + PPi or nucleoside-DP or -TP → glucose 6-phosphate + Pi or nucleoside-MP.
Quality
Crude microsomal preparation
Unit Definition
One unit will release 1.0 μmole of inorganic phosphate from glucose 6-phosphate per min at pH 6.5 at 37 °C.