Glucose 1,6-bisphosphate synthase (Pgm2l1)

Glucose 1,6-bisphosphate synthase using 1,3- bisphosphoglycerate as a phosphate donor and a collection of 1- phosphate sugars as acceptors, including glucose 1-phosphate, mannose 1-phosphate, ribose 1-phosphate and deoxyribose 1- phosphate. 5 or 6-phosphosugars are bad substrates, with the exception of glucose 6-phosphate.

Also synthesizes ribose 1,5- bisphosphate. Has only low phosphopentomutase and phosphoglucomutase activities (By similarity).