What is "aminocyclopropanecarboxylate oxidase"

n. (context enzyme English) An oxidoreductase enzyme whose products are ethylene, cyanide, dehydroascorbate, carbon dioxide, and water.

In enzymology, an aminocyclopropanecarboxylate oxidase is an enzyme that catalyzes the chemical reaction

1-aminocyclopropane-1-carboxylate + ascorbate + O$\rightleftharpoons$ ethylene + cyanide + dehydroascorbate + CO + 2 HO

The 3 substrates of this enzyme are 1-aminocyclopropane-1-carboxylate, ascorbate, and O, whereas its 5 products are ethylene, cyanide, dehydroascorbate, CO, and HO.

This enzyme belongs to the family of oxidoreductases, specifically those acting on paired donors, with O2 as oxidant and incorporation or reduction of oxygen. The oxygen incorporated need not be derived from O2 with reduced ascorbate as one donor, and incorporation of one atom of oxygen into the other donor. The systematic name of this enzyme class is 1-aminocyclopropane-1-carboxylate oxygenase (ethylene-forming). Other names in common use include ACC oxidase, and ethylene-forming enzyme.