EC 4.2.3.40     
Accepted name: (Z)-γ-bisabolene synthase
Reaction: (2E,6E)-farnesyl diphosphate = (Z)-γ-bisabolene + diphosphate
Systematic name: (2E,6E)-farnesyl-diphosphate diphosphate-lyase [(Z)-γ-bisabolene-forming]
Comments: This sesquiterpenoid enzyme is constitutively expressed in the root, hydathodes and stigma of the plant Arabidopsis thaliana. If the leaves of the plant are wounded, e.g. by cutting, the enzyme is also induced close to the wound site. The sesquiterpenoids (E)-nerolidol and α-bisabolol are also produced by this enzyme as minor products.
References:
1.  Ro, D.K., Ehlting, J., Keeling, C.I., Lin, R., Mattheus, N. and Bohlmann, J. Microarray expression profiling and functional characterization of AtTPS genes: duplicated Arabidopsis thaliana sesquiterpene synthase genes At4g13280 and At4g13300 encode root-specific and wound-inducible (Z)-γ-bisabolene synthases. Arch. Biochem. Biophys. 448 (2006) 104–116. [PMID: 16297850]
[EC 4.2.3.40 created 2009]