The Enzyme Database

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EC 4.2.3.194     
Accepted name: (–)-drimenol synthase
Reaction: (2E,6E)-farnesyl diphosphate + H2O = (–)-drimenol + diphosphate
For diagram of sesquiterpenoid biosynthesis, click here
Glossary: (–)-drimenol = drim-7-en-11-ol
Other name(s): PhDS; VoTPS3; farnesyl pyrophosphate:drimenol cyclase; drimenol cyclase; (2E,6E)-farnesyl-diphosphate diphosphohydrolase (drimenol-forming)
Systematic name: (2E,6E)-farnesyl-diphosphate diphospho-lyase [cyclising, (–)-drimenol-forming]
Comments: Isolated from the plants Valeriana officinalis (valerian) and Persicaria hydropiper (water pepper). The enzyme does not act on farnesol or drimenol diphosphate. Using 18-oxygen labelled water 18-oxygen was incorporated suggesting involvement of a stabilised carbocation or an equivalent species.
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc, CAS registry number: 146838-17-7
References:
1.  Banthorp, D.V., Brown, J.T. and Morris, G.S. Partial purification of farnesyl pyrophosphate:drimenol cyclase and geranylgerany pyrophosphate:sclareol cyclase, using cell culture as a source of material. Phytochemistry 31 (1992) 3391–3395.
2.  Kwon, M., Cochrane, S.A., Vederas, J.C. and Ro, D.K. Molecular cloning and characterization of drimenol synthase from valerian plant (Valeriana officinalis). FEBS Lett. 588 (2014) 4597–4603. [PMID: 25447532]
3.  Henquet, M.GL., Prota, N., van der Hooft, J.JJ., Varbanova-Herde, M., Hulzink, R.JM., de Vos, M., Prins, M., de Both, M.TJ., Franssen, M.CR., Bouwmeester, H. and Jongsma, M. Identification of a drimenol synthase and drimenol oxidase from Persicaria hydropiper, involved in the biosynthesis of insect deterrent drimanes. Plant J. 90 (2017) 1052–1063. [PMID: 28258968]
[EC 4.2.3.194 created 2011 as EC 3.1.7.7, transferred 2017 to EC 4.2.3.194]
 
 


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