Tags: Enzyme.
All-trans-octaprenyl-diphosphate synthase (EC 2.5.1.90 octaprenyl-diphosphate synthase octaprenyl pyrophosphate synthetase polyprenylpyrophosphate synthetase terpenoidallyltransferase terpenyl pyrophosphate synthetase trans-heptaprenyltranstransferase trans-prenyltransferase) is an enzyme with system name (2E6E)-farnesyl-diphosphate:isopentenyl-diphosphate farnesyltranstransferase (adding 5 isopentenyl units).