The Enzyme Database

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Accepted name: all-trans-nonaprenyl-diphosphate synthase [geranyl-diphosphate specific]
Reaction: geranyl diphosphate + 7 isopentenyl diphosphate = 7 diphosphate + all-trans-nonaprenyl diphosphate
For diagram of terpenoid biosynthesis, click here
Glossary: solanesyl diphosphate = all-trans-nonaprenyl diphosphate
Other name(s): nonaprenyl diphosphate synthase (ambiguous); solanesyl diphosphate synthase (ambiguous); SolPP synthase (ambiguous); SPP-synthase (ambiguous); SPP synthase (ambiguous); solanesyl-diphosphate synthase (ambiguous); OsSPS2
Systematic name: geranyl-diphosphate:isopentenyl-diphosphate transtransferase (adding 7 isopentenyl units)
Comments: (2E,6E)-Farnesyl diphosphate and geranylgeranyl diphosphate are less effective as substrates than geranyl diphosphate. The enzyme is involved in the synthesis of the side chain of menaquinone-9 [1]. In Oryza sativa the enzyme SPS2 is involved in providing solanesyl diphosphate for plastoquinone-9 formation [3].
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc
1.  Sagami, H., Ogura, K. and Seto, S. Solanesyl pyrophosphate synthetase from Micrococcus lysodeikticus. Biochemistry 16 (1977) 4616–4622. [PMID: 911777]
2.  Fujii, H., Sagami, H., Koyama, T., Ogura, K., Seto, S., Baba, T. and Allen, C.M. Variable product specificity of solanesyl pyrophosphate synthetase. Biochem. Biophys. Res. Commun. 96 (1980) 1648–1653. [PMID: 7447947]
3.  Ohara, K., Sasaki, K. and Yazaki, K. Two solanesyl diphosphate synthases with different subcellular localizations and their respective physiological roles in Oryza sativa. J. Exp. Bot. 61 (2010) 2683–2692. [PMID: 20421194]
4.  Ohnuma, S., Koyama, T. and Ogura, K. Purification of solanesyl-diphosphate synthase from Micrococcus luteus. A new class of prenyltransferase. J. Biol. Chem. 266 (1991) 23706–23713. [PMID: 1748647]
5.  Gotoh, T., Koyama, T. and Ogura, K. Farnesyl diphosphate synthase and solanesyl diphosphate synthase reactions of diphosphate-modified allylic analogs: the significance of the diphosphate linkage involved in the allylic substrates for prenyltransferase. J. Biochem. 112 (1992) 20–27. [PMID: 1429508]
6.  Teclebrhan, H., Olsson, J., Swiezewska, E. and Dallner, G. Biosynthesis of the side chain of ubiquinone:trans-prenyltransferase in rat liver microsomes. J. Biol. Chem. 268 (1993) 23081–23086. [PMID: 8226825]
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