Enables N-acylmannosamine kinase activity and UDP-N-acetylglucosamine 2-epimerase activity. Predicted to be involved in N-acetylneuraminate biosynthetic process. Located in cytosol. Human ortholog(s) of this gene implicated in GNE myopathy and sialuria. Orthologous to human GNE (glucosamine (UDP-N-acetyl)-2-epimerase/N-acetylmannosamine kinase). [provided by Alliance of Genome Resources, Apr 2022]