Reaction: (3S,6E)-nerolidol + [reduced NADPHhemoprotein reductase] + O2 = (3E)-4,8-dimethylnona-1,3,7-triene + [oxidized NADPHhemoprotein reductase] + but-3-en-2-one + 2 H2O
For diagram of reaction click here.
Other name(s): CYP82G1; CYP92C5; DMNT/TMTT homoterpene synthase
Systematic name: (3S,6E)-nerolidol,[reduced NADPHhemoprotein reductase]:oxygen oxidoreductase
Comments: A cytochrome P-450 (heme-thiolate) protein isolated from the plants Arabidopsis thaliana (thale cress) and Zea mays (maize). It forms this C11 homoterpene in response to herbivore attack. In vitro the enzyme also converts (6E,10E)-geranyllinalool to (3E,7E)-4,8,12-trimethyltrideca-1,3,7,11-tetraene (see EC 126.96.36.199, trimethyltridecatetraene synthase).
Links to other databases: BRENDA, EXPASY, KEGG, Metacyc, CAS registry number:
1. Lee, S., Badieyan, S., Bevan, D.R., Herde, M., Gatz, C. and Tholl, D. Herbivore-induced and floral homoterpene volatiles are biosynthesized by a single P450 enzyme (CYP82G1) in Arabidopsis. Proc. Natl Acad. Sci. USA 107 (2010) 21205-21210. [PMID: 21088219]
2. Richter, A., Schaff, C., Zhang, Z., Lipka, A.E., Tian, F., Kollner, T.G., Schnee, C., Preiss, S., Irmisch, S., Jander, G., Boland, W., Gershenzon, J., Buckler, E.S. and Degenhardt, J. Characterization of biosynthetic pathways for the production of the volatile homoterpenes DMNT and TMTT in Zea mays. Plant Cell 28 (2016) 2651-2665. [PMID: 27662898]