The Enzyme Database

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EC 4.2.3.172     
Accepted name: 10-epi-juneol synthase
Reaction: (2E,6E)-farnesyl diphosphate + H2O = 10-epi-juneol + diphosphate
For diagram of 10-epi-juneol biosynthesis, click here
Glossary: 10-epi-juneol = 10α-eudesm-4(14)-en-6α-ol
Systematic name: (2E,6E)-farnesyl-diphosphate diphosphate-lyase (cyclizing, 10-epi-juneol-forming)
Comments: Isolated from the plant Inula hupehensis. The enzyme also gives gives τ-cadinol and traces of other terpenoids, see EC 4.2.3.173, τ-cadinol synthase.
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc
References:
1.  Gou, J.B., Li, Z.Q., Li, C.F., Chen, F.F., Lv, S.Y. and Zhang, Y.S. Molecular cloning and functional analysis of a 10-epi-junenol synthase from Inula hupehensis. Plant Physiol. Biochem. 106 (2016) 288–294. [DOI] [PMID: 27231873]
[EC 4.2.3.172 created 2017]
 
 
EC 4.2.3.173     
Accepted name: τ-cadinol synthase
Reaction: (2E,6E)-farnesyl diphosphate + H2O = τ-cadinol + diphosphate
For diagram of cadinane sesquiterpenoid biosynthesis, click here
Glossary: τ-cadinol = 10β-cadin-4-en-10-ol
Systematic name: (2E,6E)-farnesyl-diphosphate diphosphate-lyase (cyclizing, τ-cadinol-forming)
Comments: Isolated from the plant Inula hupehensis. The enzyme also gives 10-epi-juneol and traces of other terpenoids, see EC 4.2.3.172, 10-epi-juneol synthase. It has also been isolated from the plants maize (Zea mays) and lavender (Lavandula angustifolia).
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc
References:
1.  Gou, J.B., Li, Z.Q., Li, C.F., Chen, F.F., Lv, S.Y. and Zhang, Y.S. Molecular cloning and functional analysis of a 10-epi-junenol synthase from Inula hupehensis. Plant Physiol. Biochem. 106 (2016) 288–294. [DOI] [PMID: 27231873]
2.  Jullien, F., Moja, S., Bony, A., Legrand, S., Petit, C., Benabdelkader, T., Poirot, K., Fiorucci, S., Guitton, Y., Nicole, F., Baudino, S. and Magnard, J.L. Isolation and functional characterization of a τ-cadinol synthase, a new sesquiterpene synthase from Lavandula angustifolia. Plant Mol. Biol. 84 (2014) 227–241. [DOI] [PMID: 24078339]
3.  Ren, F., Mao, H., Liang, J., Liu, J., Shu, K. and Wang, Q. Functional characterization of ZmTPS7 reveals a maize τ-cadinol synthase involved in stress response. Planta 244 (2016) 1065–1074. [DOI] [PMID: 27421723]
[EC 4.2.3.173 created 2017]
 
 


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