IUBMB Enzyme Nomenclature


Accepted name: (E)-β-ocimene synthase

Reaction: geranyl diphosphate = (E)-β-ocimene + diphosphate

For diagram of reaction click here.

Glossary: (E)-β-ocimene = (3E)-3,7-dimethylocta-1,3,6-triene

Other name(s): β-ocimene synthase; AtTPS03; ama0a23; LjEβOS; MtEBOS

Systematic name: geranyl-diphosphate diphosphate-lyase [(E)-β-ocimene-forming]

Comments: Widely distributed in plants, which release β-ocimene when attacked by herbivorous insects.

Links to other databases: BRENDA, EXPASY, KEGG, Metacyc, CAS registry number:


1. Faldt, J., Arimura, G., Gershenzon, J., Takabayashi, J. and Bohlmann, J. Functional identification of AtTPS03 as (E)-β-ocimene synthase: a monoterpene synthase catalyzing jasmonate- and wound-induced volatile formation in Arabidopsis thaliana. Planta 216 (2003) 745-751. [PMID: 12624761]

2. Dudareva, N., Martin, D., Kish, C.M., Kolosova, N., Gorenstein, N., Faldt, J., Miller, B. and Bohlmann, J. (E)-β-ocimene and myrcene synthase genes of floral scent biosynthesis in snapdragon: function and expression of three terpene synthase genes of a new terpene synthase subfamily. Plant Cell 15 (2003) 1227-1241. [PMID: 12724546]

3. Arimura, G., Ozawa, R., Kugimiya, S., Takabayashi, J. and Bohlmann, J. Herbivore-induced defense response in a model legume. Two-spotted spider mites induce emission of (E)-β-ocimene and transcript accumulation of (E)-β-ocimene synthase in Lotus japonicus. Plant Physiol. 135 (2004) 1976-1983. [PMID: 15310830]

4. Navia-Gine, W.G., Yuan, J.S., Mauromoustakos, A., Murphy, J.B., Chen, F. and Korth, K.L. Medicago truncatula (E)-β-ocimene synthase is induced by insect herbivory with corresponding increases in emission of volatile ocimene. Plant Physiol. Biochem. 47 (2009) 416-425. [PMID: 19249223]

[EC created 2012]

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