ACC synthase 8 belongs to a group fo enzymes which catalyze the conversion of S-adenosyl-L-methionine (SAM) into 1-aminocyclopropane-1-carboxylate (ACC), a direct precursor of ethylene. ACS8 is auxin inducible. Alternative names: 1-aminocyclopropane-1-carboxylate synthase 8, ACC synthase 8, S-adenosyl-L-methionine methylthioadenosine-lyase 8.