Syn-copalyl-diphosphate synthase (EC 5.5.1.14, OsCyc1, OsCPSsyn, syn-CPP synthase, syn-copalyl diphosphate synthase) is an enzyme with systematic name 9alpha-copalyl-diphosphate lyase (decyclizing).
[1][2] This enzyme catalyses the following chemical reaction This enzyme requires a divalent metal ion, preferably Mg2+, for activity.