The Enzyme Database

Your query returned 3 entries.    printer_iconPrintable version



EC 1.14.13.183      
Transferred entry: dammarenediol 12-hydroxylase. Now EC 1.14.14.120, dammarenediol 12-hydroxylase
[EC 1.14.13.183 created 2013, deleted 2018]
 
 
EC 1.14.14.120     
Accepted name: dammarenediol 12-hydroxylase
Reaction: dammarenediol-II + [reduced NADPH—hemoprotein reductase] + O2 = protopanaxadiol + [oxidized NADPH—hemoprotein reductase] + H2O
For diagram of dammarenediol II and tirucalla-7,24-dien-3β-ol biosynthesis, click here
Glossary: dammarenediol-II = dammar-24-ene-3β,20-diol
protopanaxadiol = dammar-24-ene-3β,12β,20-triol
Other name(s): protopanaxadiol synthase; CYP716A47
Systematic name: dammarenediol-II,[reduced NADPH—hemoprotein reductase]:oxygen oxidoreductase (12β-hydroxylating)
Comments: A cytochrome P-450 (heme-thiolate) protein isolated from ginseng (Panax ginseng). Involved in the biosynthetic pathway of ginsenosides.
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc
References:
1.  Han, J.Y., Kim, H.J., Kwon, Y.S. and Choi, Y.E. The Cyt P450 enzyme CYP716A47 catalyzes the formation of protopanaxadiol from dammarenediol-II during ginsenoside biosynthesis in Panax ginseng. Plant Cell Physiol. 52 (2011) 2062–2073. [DOI] [PMID: 22039120]
[EC 1.14.14.120 created 2013 as EC 1.14.13.183, transferred 2018 to EC 1.14.14.120]
 
 
EC 4.2.1.125     
Accepted name: dammarenediol II synthase
Reaction: dammarenediol II = (3S)-2,3-epoxy-2,3-dihydrosqualene + H2O
For diagram of dammarenediol II and tirucalla-7,24-dien-3β-ol biosynthesis, click here
Other name(s): dammarenediol synthase; 2,3-oxidosqualene (20S)-dammarenediol cyclase; DDS; (S)-squalene-2,3-epoxide hydro-lyase (dammarenediol-II forming)
Systematic name: (3S)-2,3-epoxy-2,3-dihydrosqualene hydro-lyase (dammarenediol-II-forming)
Comments: The reaction occurs in the reverse direction.
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc, CAS registry number: 189354-84-5
References:
1.  Tansakul, P., Shibuya, M., Kushiro, T. and Ebizuka, Y. Dammarenediol-II synthase, the first dedicated enzyme for ginsenoside biosynthesis, in Panax ginseng. FEBS Lett. 580 (2006) 5143–5149. [DOI] [PMID: 16962103]
2.  Han, J.Y., Kwon, Y.S., Yang, D.C., Jung, Y.R. and Choi, Y.E. Expression and RNA interference-induced silencing of the dammarenediol synthase gene in Panax ginseng. Plant Cell Physiol. 47 (2006) 1653–1662. [DOI] [PMID: 17088293]
[EC 4.2.1.125 created 2011]
 
 


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