Cyb561a3 - cytochrome b561 family, member A3

Enables transmembrane ascorbate ferrireductase activity. Involved in cellular iron ion homeostasis. Located in late endosome membrane and lysosomal membrane. Is expressed in ganglia; jaw bone; and neural retina. Orthologous to human CYB561A3 (cytochrome b561 family member A3). [provided by Alliance of Genome Resources, Apr 2022]