The Enzyme Database

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EC 1.1.1.386     
Accepted name: ipsdienol dehydrogenase
Reaction: (R)-ipsdienol + NAD(P)+ = ipsdienone + NAD(P)H + H+
For diagram of acyclic monoterpenoid biosynthesis, click here
Glossary: ipsdienone = 2-methyl-6-methyleneocta-2,7-dien-4-one
(R)-ipsdienol = (4R)-2-methyl-6-methyleneocta-2,7-dien-4-ol
Other name(s): IDOLDH
Systematic name: (R)-ipsdienol:NAD(P)+ oxidoreductase
Comments: The enzyme is involved in pheromone production by the pine engraver beetle, Ips pini.
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc
References:
1.  Figueroa-Teran, R., Welch, W.H., Blomquist, G.J. and Tittiger, C. Ipsdienol dehydrogenase (IDOLDH): a novel oxidoreductase important for Ips pini pheromone production. Insect Biochem. Mol. Biol. 42 (2012) 81–90. [DOI] [PMID: 22101251]
[EC 1.1.1.386 created 2015]
 
 
EC 1.14.13.207      
Transferred entry: ipsdienol synthase. Now EC 1.14.14.31, ipsdienol synthase
[EC 1.14.13.207 created 2015, deleted 2016]
 
 
EC 1.14.14.31     
Accepted name: ipsdienol synthase
Reaction: myrcene + [reduced NADPH—hemoprotein reductase] + O2 = (R)-ipsdienol + [oxidized NADPH—hemoprotein reductase] + H2O
For diagram of acyclic monoterpenoid biosynthesis, click here
Glossary: myrcene = 7-methyl-3-methyleneocta-1,6-diene
ipsdienol = 2-methyl-6-methyleneocta-2,7-dien-4-ol
Other name(s): myrcene hydroxylase; CYP9T2; CYP9T3
Systematic name: myrcene,NADPH—hemoprotein reductase:O2 oxidoreductase (hydroxylating)
Comments: A cytochrome P-450 heme-thiolate protein. Involved in the insect aggregation pheromone production. Isolated from the pine engraver beetle, Ips pini. A small amount of (S)-ipsdienol is also formed. In vitro it also hydroxylated (+)- and (–)-α-pinene, 3-carene, and (+)-limonene, but not α-phellandrene, (–)-β-pinene, γ-terpinene, or terpinolene.
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc
References:
1.  Sandstrom, P., Welch, W.H., Blomquist, G.J. and Tittiger, C. Functional expression of a bark beetle cytochrome P450 that hydroxylates myrcene to ipsdienol. Insect Biochem. Mol. Biol. 36 (2006) 835–845. [DOI] [PMID: 17046597]
2.  Song, M., Kim, A.C., Gorzalski, A.J., MacLean, M., Young, S., Ginzel, M.D., Blomquist, G.J. and Tittiger, C. Functional characterization of myrcene hydroxylases from two geographically distinct Ips pini populations. Insect Biochem. Mol. Biol. 43 (2013) 336–343. [DOI] [PMID: 23376633]
[EC 1.14.14.31 created 2015 as EC 1.14.13.207, transferred 2016 to EC 1.14.14.31]
 
 


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