ò-Phellandrene synthase (EC 4.2.3.52, geranyl-diphosphate-cyclizing) (phellandrene synthase, (âÂÂ)-ò-phellandrene synthase, (âÂÂ)-(4S)-ò-phellandrene synthase) is an enzyme with systematic name geranyl-diphosphate diphosphate-lyase (cyclizing; ò-phellandrene-forming). This enzyme catalyses the following chemical reaction
This enzyme requires ion Mn<sup>2+</sup>.