Enables N-acetylglucosamine kinase activity and N-acylmannosamine kinase activity. Acts upstream of or within N-acetylglucosamine metabolic process. Is expressed in several structures, including eye; genitourinary system; liver; nervous system; and spleen. Orthologous to human NAGK (N-acetylglucosamine kinase). [provided by Alliance of Genome Resources, Apr 2022]