Glutamine: Fructose-6-Phosphate Amidotransferase catalyzes the reaction that follows:

F6P + Glutamine <=> Glucosamine-6-Phosphate + Glutamate

This is first step in synthesis of amino sugars. In subsequent steps, the glucosamine-6-phosphate is converted to UDP-N-acetylglucosamine (Figure 16.13)