Cytokinin oxidase/dehydrogenases(CKX) catalyze the irreversible degradation of the cytokinins isopentenyladenine,zeatin,and their ribosides in a single enzymatic step by cleavage of the unsaturated N6-isoprenoid side chain.
细胞分裂素几乎参与调控了植物生活周期中所有的生长发育过程,细胞分裂素氧化/脱氢酶(CKX)是降解细胞分裂素的关键酶。