all-trans-Octaprenyl diphosphate
Octaprenyl diphosphate, also known as farnesylfarnesylgeraniol or OPP, belongs to the class of organic compounds known as tetraterpenoids. These are terpenoid molecules containing 10 consecutively linked isoprene units. Octaprenyl diphosphate is the precursor for the side chain of the isoprenoid quinones ubiquinone and menaquinone. It is a substrate of the enzyme trans-octaprenyltranstransferase (EC 2.5.1.11) in the steroid biosynthesis pathway.
| ID | EC Number | Name |
|---|---|---|
| KEGG:R05611 | 2.5.1.- | C04146 + C00013<=>C04216 + C00129 |
| KEGG:R05615 | 2.5.1.39 | all-trans-octaprenyl-diphosphate:4-hydroxybenzoate 3-octaprenyltransferase |
| KEGG:R07267 | 2.5.1.- | (E)-octaprenyl-diphosphate:isopentenyl-diphosphate octaprenyltranstransferase |
| KEGG:R09248 | 2.5.1.90 | (2E,6E)-farnesyl-diphosphate:isopentenyl-diphosphate farnesyltranstransferase (adding 5 isopentenyl units) |