| EC |
2.5.1.90 |
| Accepted name: |
all-trans-octaprenyl-diphosphate synthase |
| Reaction: |
(2E,6E)-farnesyl diphosphate + 5 isopentenyl diphosphate = 5 diphosphate + all-trans-octaprenyl diphosphate |
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For diagram of terpenoid biosynthesis, click here |
| Glossary: |
all-trans-octaprenyl diphosphate = OPP |
| Other name(s): |
octaprenyl-diphosphate synthase; octaprenyl pyrophosphate synthetase; polyprenylpyrophosphate synthetase; terpenoidallyltransferase; terpenyl pyrophosphate synthetase; trans-heptaprenyltranstransferase; trans-prenyltransferase |
| Systematic name: |
(2E,6E)-farnesyl-diphosphate:isopentenyl-diphosphate farnesyltranstransferase (adding 5 isopentenyl units) |
| Comments: |
This enzyme catalyses the condensation reactions resulting in the formation of all-trans-octaprenyl diphosphate, the isoprenoid side chain of ubiquinone-8 and menaquinone-8. The enzyme adds five isopentenyl diphosphate molecules sequentially to farnesyl diphosphate with trans stereochemistry |
| Links to other databases: |
BRENDA, EXPASY, Gene, KEGG, MetaCyc, PDB |
| References: |
| 1. |
Fujisaki, S., Nishino, T. and Katsuki, H. Isoprenoid synthesis in Escherichia coli. Separation and partial purification of four enzymes involved in the synthesis. J. Biochem. 99 (1986) 1327–1337. [PMID: 3519603] |
| 2. |
Asai, K., Fujisaki, S., Nishimura, Y., Nishino, T., Okada, K., Nakagawa, T., Kawamukai, M. and Matsuda, H. The identification of Escherichia coli ispB (cel) gene encoding the octaprenyl diphosphate synthase. Biochem. Biophys. Res. Commun. 202 (1994) 340–345. [DOI] [PMID: 8037730] |
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| [EC 2.5.1.90 created 2010] |
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