2.5.1.10 geranyl diphosphate + isopentenyl diphosphate - 2.5.1.10 isopentenyl diphosphate + dimethylallyl diphosphate - 2.5.1.10 geranyl diphosphate + isopentenyl diphosphate bifunctional farnesyl/geranylgeranyl diphosphate synthase 2.5.1.10 dimethylallyl diphosphate + 2 isopentenyl diphosphate enzyme participates in isoprenoid biosynthesis in eukaryotes 2.5.1.10 isopentenyl diphosphate + geranyl diphosphate enzyme participates in isoprenoid biosynthesis in eukaryotes 2.5.1.10 dimethylallyl diphosphate + isopentenyl diphosphate key enzyme in isoprenoid biosynthesis 2.5.1.10 geranyl diphosphate + isopentenyl diphosphate key enzyme in isoprenoid biosynthesis 2.5.1.10 dimethylallyl diphosphate + isopentenyl diphosphate reaction of EC 2.5.1.1, the enzyme catalyses the sequential condensation of dimethylallyl diphosphate with isopentenyl diphosphate (IPP) and the resulting geranyl diphosphate (GPP) with another unit of IPP, eventually producing the 15-carbon isoprenoid farnesyl diphosphate 2.5.1.10 dimethylallyl diphosphate + isopentenyl diphosphate reaction of EC 2.5.1.1, the enzyme catalyzes the condensation of dimethylallyl pyrophosphate and isopentenyl pyrophosphate, forming geranyl pyrophosphate and then farnesyl pyrophosphate 2.5.1.10 dimethylallyl diphosphate + isopentenyl diphosphate reaction of EC 2.5.1.1. the enzyme catalyzes the sequential condensation of two molecules of isopentenyl diphosphate (IPP) with dimethylallyl diphosphate (DMAPP), producing geranyl diphosphate (GPP) and farnesyl diphosphate