(+)-beta-pinene synthase

(+)-beta-pinene synthase (EC 4.2.3.122, (+)-pinene cyclase, cyclase III) is an enzyme with systematic name geranyl-diphosphate diphosphate-lyase ((+)-beta-pinene-forming).^[1]^[2] This enzyme catalyses the following chemical reaction

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Cyclase III from Salvia officinalis (sage) gives roughly equal parts of (+)-beta-pinene and (+)-alpha-pinene.

References

↑ 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. PMID 8109978.
↑ Pyun HJ, Wagschal KC, Jung DI, Coates RM, Croteau R (February 1994). "Stereochemistry of the proton elimination in the formation of (+)- and (-)-alpha-pinene by monoterpene cyclases from sage (Salvia officinalis)". Archives of Biochemistry and Biophysics. 308 (2): 488–96. doi:10.1006/abbi.1994.1069. PMID 8109979.

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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