Enables several functions, including amino acid binding activity; glutamine-fructose-6-phosphate transaminase (isomerizing) activity; and identical protein binding activity. Involved in several processes, including fructose 6-phosphate metabolic process; glucosamine biosynthetic process; and negative regulation of glycogen biosynthetic process. Biomarker of familial hyperlipidemia and hyperinsulinism. Human ortholog(s) of this gene implicated in congenital myasthenic syndrome 12 and obesity. Orthologous to human GFPT1 (glutamine--fructose-6-phosphate transaminase 1). [provided by Alliance of Genome Resources, Apr 2022]