The Enzyme Database

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EC 5.4.99.56     
Accepted name: tirucalladienol synthase
Reaction: (3S)-2,3-epoxy-2,3-dihydrosqualene = tirucalla-7,24-dien-3β-ol
For diagram of dammarenediol II and tirucalla-7,24-dien-3β-ol biosynthesis, click here
Other name(s): PEN3
Systematic name: (3S)-2,3-epoxy-2,3-dihydrosqualene mutase (cyclizing, tirucalla-7,24-dien-3β-ol-forming)
Comments: The product from Arabidopsis thaliana is 85% tirucalla-7,24-dien-3β-ol with trace amounts of other triterpenoids.
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc
References:
1.  Morlacchi, P., Wilson, W.K., Xiong, Q., Bhaduri, A., Sttivend, D., Kolesnikova, M.D. and Matsuda, S.P. Product profile of PEN3: the last unexamined oxidosqualene cyclase in Arabidopsis thaliana. Org. Lett. 11 (2009) 2627–2630. [PMID: 19445469]
[EC 5.4.99.56 created 2011]
 
 


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