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J Nat Prod. 2003 Mar;66(3):332-6.

Biosynthesis of chloroplastidic and extrachloroplastidic terpenoids in liverwort cultured cells: 13C serine as a probe of terpene biosynthesis via mevalonate and non-mevalonate pathways.

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  • 1The United Graduate School of Agricultural Science, Iwate University, Morioka 020-8550, Japan.


Two terpenoid biosynthetic pathways, the mevalonate and non-mevalonate (glyceraldehyde phosphate-pyruvate) routes, were examined by feeding (13)C-labeled serines ([1-(13)C]- and [3-(13)C]-) to the cultured cells of the liverwort, Heteroscyphus planus. The labeling patterns observed in the isoprenoid unit of the biosynthetically (13)C-labeled stigmasterol corresponded to those expected from the mevalonate pathway, while those of the phytyl side chain corresponded to those from the non-mevalonate pathway. Thus, serine is a potential probe to determine the origin of terpenoid biosynthesis, in either the mevalonate or non-mevalonate pathway.

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