(E)-beta-ocimene synthase

(E)-beta-ocimene synthase (EC 4.2.3.106, beta-ocimene synthase, AtTPS03, ama0a23, LjEbetaOS, MtEBOS) is an enzyme with systematic name geranyl-diphosphate diphosphate-lyase ((E)-beta-ocimene-forming).^[1]^[2]^[3]^[4] This enzyme catalyses the following chemical reaction

geranyl diphosphate

\rightleftharpoons

(E)-beta-ocimene + diphosphate

This enzyme is widely distributed in plants, which release beta-ocimene when attacked by herbivorous insects.

References

↑ Faldt, J., Arimura, G., Gershenzon, J., Takabayashi, J. and Bohlmann, J. (2003). "Functional identification of AtTPS03 as (E)-β-ocimene synthase: a monoterpene synthase catalyzing jasmonate- and wound-induced volatile formation in Arabidopsis thaliana". Planta 216 (5): 745–751. doi:10.1007/s00425-002-0924-0. PMID 12624761.
↑ Dudareva, N., Martin, D., Kish, C.M., Kolosova, N., Gorenstein, N., Faldt, J., Miller, B. and Bohlmann, J. (2003). "(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 (5): 1227–1241. doi:10.1105/tpc.011015. PMID 12724546.
↑ Arimura, G., Ozawa, R., Kugimiya, S., Takabayashi, J. and Bohlmann, J. (2004). "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 (4): 1976–1983. doi:10.1104/pp.104.042929. PMID 15310830.
↑ Navia-Gine, W.G., Yuan, J.S., Mauromoustakos, A., Murphy, J.B., Chen, F. and Korth, K.L. (2009). "Medicago truncatula (E)-β-ocimene synthase is induced by insect herbivory with corresponding increases in emission of volatile ocimene". Plant Physiol. Biochem. 47 (5): 416–425. doi:10.1016/j.plaphy.2009.01.008. PMID 19249223.

External links

(E)-beta-ocimene synthase at the US National Library of Medicine Medical Subject Headings (MeSH)

Carbon-oxygen lyases (EC 4.2) (primarily dehydratases)

4.2.1: Hydro-Lyases	Carbonic anhydrase Fumarase Aconitase Enolase Alpha Enolase 2 Enoyl-CoA hydratase/3-Hydroxyacyl ACP dehydrase Methylglutaconyl-CoA hydratase Tryptophan synthase Cystathionine beta synthase Porphobilinogen synthase 3-Isopropylmalate dehydratase Urocanase Uroporphyrinogen III synthase Nitrile hydratase

4.2.2: Acting on polysaccharides	Hyaluronate lyase

4.2.3: Acting on phosphates	Threonine synthase

4.2.99: Other	Carboxymethyloxysuccinate lyase

Enzymes

Activity	Active site Binding site Catalytic triad Oxyanion hole Enzyme promiscuity Catalytically perfect enzyme Coenzyme Cofactor Enzyme catalysis Enzyme kinetics Lineweaver–Burk plot Michaelis–Menten kinetics

Regulation	Allosteric regulation Cooperativity Enzyme inhibitor

Classification	EC number Enzyme superfamily Enzyme family List of enzymes

Types	EC1 Oxidoreductases(list) EC2 Transferases(list) EC3 Hydrolases(list) EC4 Lyases(list) EC5 Isomerases(list) EC6 Ligases(list)

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