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.^[1][2] It is synthesized by the enzyme ACC synthase ( ) from methionine and converted to ethylene by ACC oxidase ().^[3]

ACC is also a non-physiological partial agonist of the mammalian NMDA receptor.^[4]

References

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