Reaction catalyzed by trifunctional (all-E)-isoprenyl diphospate synthase (2.5.1.B41), geranylfarnesyl diphosphate synthase (2.5.1.81) show all sequences for 2.5.1.81
+
=
+
geranylgeranyl diphosphate
+
isopentenyl diphosphate
=
(2E,6E,10E,14E)-geranylfarnesyl diphosphate
+
diphosphate