1-aminocyclopropane-1-carboxylate synthase (ACS) enzymes catalyze the conversion of S-adenosyl-L-methionine (SAM) into 1-aminocyclopropane-1-carboxylate (ACC), a direct precursor of ethylene.
Gene References Into Functions
Research has shown that abscisic acid (ABA) negatively regulates ethylene production by suppressing the transcription of the ethylene biosynthesis genes ACS4 and ACS8 through the action of the ABI4 protein. PMID: 26410794
Expression studies using the GUS reporter in Arabidopsis thaliana demonstrate that ACS4 is responsive to plant growth regulators and abiotic stress in both roots and aerial parts. PMID: 15699063