name GO_0046905 namespace http://purl.org/obo/owl/GO# parent GO_0003824 label [en] phytoene synthase activity comment [] Note that this should not be confused with 'geranylgeranyl-diphosphate geranylgeranyltransferase activity ; GO:0016767', EC:2.5.1.32. This activity is the second part of the formation of phytoene from geranylgeranyl-diphosphate, the first stage of which is catalyzed by EC:2.5.1.32. hasOBONamespace [] molecular_function