Enables DNA-N1-methyladenine dioxygenase activity; oxidative DNA demethylase activity; and oxidative RNA demethylase activity. Involved in several processes, including nucleic acid metabolic process; regulation of respiratory system process; and regulation of white fat cell proliferation. Located in nucleus. Is expressed in several structures, including gonad; hemolymphoid system gland; liver; lung; and salivary gland. Human ortholog(s) of this gene implicated in obesity. Orthologous to human FTO (FTO alpha-ketoglutarate dependent dioxygenase). [provided by Alliance of Genome Resources, Apr 2022]