Farnesylcysteine lyase (EC 1.8.3.6, FC lyase, FCLY) is an enzyme with systematic name S-(2E,6E)-farnesyl-L-cysteine oxidase. This enzyme catalyses the following chemical reactionS-(2E,6E)-farnesyl-L-cysteine + O2 + H2O (2E,6E)-farnesal + L-cysteine + H2O2