1-Aminocyclopropane-1-carboxylic acid

1-Aminocyclopropane-1-carboxylic acid (ACC) is a disubstituted cyclic alpha-amino acid in which a three-membered cyclopropane ring is fuzed to the C(alpha)-atom of the amino acid.

ACC plays an important role in the biosynthesis of the plant hormone ethylene. It is synthesized by the enzyme ACC synthase from methionine and converted to ethylene by ACC oxidase.

ACC is also a non-physiological partial agonist of the mammalian NMDA receptor.

