Human Ecto-nox Disulfide-thiol Exchanger 1, ENOX1 ELI

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

Hydroquinone oxidase activity alternates with a protein disulfide-thiol interchange/oxidoreductase activity which may control physical membrane displacements associated with vesicle budding or cell enlargement.

The activities oscillate with a period length of 24 minutes and play a role in control of the ultradian cellular biological clock.