Ecto-NOX disulfide-thiol exchanger 2 (ENOX2)

May be involved in cell growth. Probably acts as a terminal oxidase of plasma electron transport from cytosolic NAD(P)H via hydroquinones to acceptors in the cell surface.

Hydroquinone oxidase activity alternates with a protein disulfide- thiol interchange/oxidoreductase activity which might control physical membrane displacements associated with vesicle budding or cell enlargement. The activities oscillate with a period length of 22 minutes and play a role in control of the ultradian cellular biological clock.