. "The enzyme is involved in the pathway for bacterial cell-wall peptidoglycan and lipopolysaccharide biosyntheses, being an essential step in the pathway for UDP-N-acetylglucosamine biosynthesis." . "The enzyme from Escherichia coli is activated by phosphorylation and can be autophosphorylated in vitro by alpha-D-glucosamine 1,6-bisphosphate, which is an intermediate in the reaction, alpha-D-glucose 1,6-bisphosphate or ATP." . "It can also catalyze the interconversion of alpha-D-glucose 1-phosphate and alpha-D-glucose 6-phosphate, although at a much lower rate." . . . "Phosphoglucosamine mutase" . "Alpha-D-glucosamine 1-phosphate = D-glucosamine 6-phosphate." .