(+)-β-Pinene synthase (EC 4.2.3.122, (+)-pinene cyclase, cyclase III) is an enzyme with systematic namegeranyl-diphosphate diphosphate-lyase [(+)-β-pinene-forming].[1][2] This enzyme catalyses the following chemical reaction
^Wagschal KC, Pyun HJ, Coates RM, Croteau R (February 1994). "Monoterpene biosynthesis: isotope effects associated with bicyclic olefin formation catalyzed by pinene synthases from sage (Salvia officinalis)". Archives of Biochemistry and Biophysics. 308 (2): 477–87. doi:10.1006/abbi.1994.1068. PMID8109978.
^Pyun HJ, Wagschal KC, Jung DI, Coates RM, Croteau R (February 1994). "Stereochemistry of the proton elimination in the formation of (+)- and (-)-α-pinene by monoterpene cyclases from sage (Salvia officinalis)". Archives of Biochemistry and Biophysics. 308 (2): 488–96. doi:10.1006/abbi.1994.1069. PMID8109979.